✨ Added clang prettier plugin

frontend/bindings/voidraft/internal/services/index.ts

@@ -18,7 +18,6 @@ import * as ThemeService from "./themeservice.js";
 import * as TranslationService from "./translationservice.js";
 import * as TrayService from "./trayservice.js";
 import * as WindowService from "./windowservice.js";
-import * as WindowSnapService from "./windowsnapservice.js";
 export {
     BackupService,
     ConfigService,
@@ -36,8 +35,7 @@ export {
     ThemeService,
     TranslationService,
     TrayService,
-    WindowService,
-    WindowSnapService
+    WindowService
 };
 
 export * from "./models.js";

frontend/bindings/voidraft/internal/services/windowsnapservice.ts

@@ -1,79 +0,0 @@
-// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
-// This file is automatically generated. DO NOT EDIT
-
-/**
- * WindowSnapService 窗口吸附服务
- * @module
- */
-
-// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-// @ts-ignore: Unused imports
-import {Call as $Call, Create as $Create} from "@wailsio/runtime";
-
-// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-// @ts-ignore: Unused imports
-import * as application$0 from "../../../github.com/wailsapp/wails/v3/pkg/application/models.js";
-
-/**
- * Cleanup 清理资源
- */
-export function Cleanup(): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(2155505498) as any;
-    return $resultPromise;
-}
-
-/**
- * GetCurrentThreshold 获取当前自适应阈值（用于调试或显示）
- */
-export function GetCurrentThreshold(): Promise<number> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(3176419026) as any;
-    return $resultPromise;
-}
-
-/**
- * OnWindowSnapConfigChanged 处理窗口吸附配置变更
- */
-export function OnWindowSnapConfigChanged(enabled: boolean): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(3794787039, enabled) as any;
-    return $resultPromise;
-}
-
-/**
- * RegisterWindow 注册需要吸附管理的窗口
- */
-export function RegisterWindow(documentID: number, window: application$0.WebviewWindow | null, title: string): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(1000222723, documentID, window, title) as any;
-    return $resultPromise;
-}
-
-/**
- * ServiceShutdown 实现服务关闭接口
- */
-export function ServiceShutdown(): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(1172710495) as any;
-    return $resultPromise;
-}
-
-/**
- * SetAppReferences 设置应用和主窗口引用
- */
-export function SetAppReferences(app: application$0.App | null, mainWindow: application$0.WebviewWindow | null): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(1782093351, app, mainWindow) as any;
-    return $resultPromise;
-}
-
-/**
- * SetSnapEnabled 设置是否启用窗口吸附
- */
-export function SetSnapEnabled(enabled: boolean): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(2280126835, enabled) as any;
-    return $resultPromise;
-}
-
-/**
- * UnregisterWindow 取消注册窗口
- */
-export function UnregisterWindow(documentID: number): Promise<void> & { cancel(): void } {
-    let $resultPromise = $Call.ByID(2844230768, documentID) as any;
-    return $resultPromise;
-}

frontend/package.json

@@ -5,20 +5,20 @@
   "type": "module",
   "scripts": {
     "dev": "vite --host --mode development",
-    "build:dev": "vue-tsc && vite build --minify false --mode development",
-    "build": "vue-tsc && vite build --mode production",
+    "build:dev": "cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vue-tsc && cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vite build --minify false --mode development",
+    "build": "cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vue-tsc && cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vite build --mode production",
     "preview": "vite preview",
     "lint": "eslint",
     "lint:fix": "eslint --fix"
   },
   "dependencies": {
-    "@codemirror/autocomplete": "^6.18.6",
+    "@codemirror/autocomplete": "^6.18.7",
     "@codemirror/commands": "^6.8.1",
     "@codemirror/lang-angular": "^0.1.4",
     "@codemirror/lang-cpp": "^6.0.3",
     "@codemirror/lang-css": "^6.3.1",
     "@codemirror/lang-go": "^6.0.1",
-    "@codemirror/lang-html": "^6.4.9",
+    "@codemirror/lang-html": "^6.4.10",
     "@codemirror/lang-java": "^6.0.2",
     "@codemirror/lang-javascript": "^6.2.4",
     "@codemirror/lang-json": "^6.0.2",
@@ -33,7 +33,6 @@
     "@codemirror/lang-sql": "^6.9.1",
     "@codemirror/lang-vue": "^0.1.3",
     "@codemirror/lang-wast": "^6.0.2",
-    "@codemirror/lang-xml": "^6.1.0",
     "@codemirror/lang-yaml": "^6.1.2",
     "@codemirror/language": "^6.11.3",
     "@codemirror/language-data": "^6.5.1",
@@ -41,40 +40,56 @@
     "@codemirror/lint": "^6.8.5",
     "@codemirror/search": "^6.5.11",
     "@codemirror/state": "^6.5.2",
-    "@codemirror/view": "^6.38.1",
+    "@codemirror/view": "^6.38.2",
+    "@cospaia/prettier-plugin-clojure": "^0.0.2",
     "@lezer/highlight": "^1.2.1",
     "@lezer/lr": "^1.4.2",
+    "@prettier/plugin-xml": "^3.4.2",
+    "@reteps/dockerfmt": "^0.3.6",
+    "@toml-tools/lexer": "^1.0.0",
+    "@toml-tools/parser": "^1.0.0",
     "codemirror": "^6.0.2",
     "codemirror-lang-elixir": "^4.0.0",
     "colors-named": "^1.0.2",
     "colors-named-hex": "^1.0.2",
     "franc-min": "^6.2.0",
+    "groovy-beautify": "^0.0.17",
     "hsl-matcher": "^1.2.4",
-    "lezer": "^0.13.5",
+    "java-parser": "^3.0.1",
+    "jinx-rust": "^0.1.6",
+    "jsox": "^1.2.123",
+    "linguist-languages": "^9.0.0",
+    "node-sql-parser": "^5.3.12",
+    "php-parser": "^3.2.5",
     "pinia": "^3.0.3",
     "pinia-plugin-persistedstate": "^4.5.0",
     "prettier": "^3.6.2",
     "remarkable": "^2.0.1",
-    "sass": "^1.90.0",
-    "vue": "^3.5.19",
-    "vue-i18n": "^11.1.11",
+    "sass": "^1.92.1",
+    "sh-syntax": "^0.5.8",
+    "sql-formatter": "^15.6.9",
+    "vue": "^3.5.21",
+    "vue-i18n": "^11.1.12",
     "vue-pick-colors": "^1.8.0",
     "vue-router": "^4.5.1"
   },
   "devDependencies": {
-    "@eslint/js": "^9.34.0",
+    "@eslint/js": "^9.35.0",
     "@lezer/generator": "^1.8.0",
-    "@types/node": "^24.3.0",
+    "@types/node": "^24.3.1",
     "@types/remarkable": "^2.0.8",
     "@vitejs/plugin-vue": "^6.0.1",
     "@wailsio/runtime": "latest",
-    "eslint": "^9.34.0",
+    "cross-env": "^7.0.3",
+    "eslint": "^9.35.0",
     "eslint-plugin-vue": "^10.4.0",
-    "globals": "^16.3.0",
+    "globals": "^16.4.0",
+    "rollup-plugin-visualizer": "^6.0.3",
     "typescript": "^5.9.2",
-    "typescript-eslint": "^8.40.0",
+    "typescript-eslint": "^8.43.0",
     "unplugin-vue-components": "^29.0.0",
-    "vite": "^7.1.3",
+    "vite": "^7.1.5",
+    "vite-plugin-node-polyfills": "^0.24.0",
     "vue-eslint-parser": "^10.2.0",
     "vue-tsc": "^3.0.6"
   }

frontend/src/common/prettier/plugins/clang/CustomFileSystem.cc

@@ -0,0 +1,117 @@
+#include "CustomFileSystem.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/Path.h"
+#include <emscripten.h>
+#include <iostream>
+#include <string>
+#include <system_error>
+
+using namespace llvm;
+using namespace llvm::vfs;
+
+namespace {
+
+bool isRunningOnWindows() {
+  return EM_ASM_INT({return process.platform == 'win32' ? 1 : 0}) == 1;
+}
+
+std::error_code current_path(SmallVectorImpl<char> &result) {
+  result.clear();
+
+  const char *pwd = ::getenv("PWD");
+  result.append(pwd, pwd + strlen(pwd));
+
+  return {};
+}
+
+} // namespace
+
+namespace llvm {
+namespace vfs {
+
+sys::path::Style getPathStyle() {
+  static sys::path::Style cachedStyle = sys::path::Style::native;
+
+  if (cachedStyle == sys::path::Style::native) {
+    cachedStyle = isRunningOnWindows() ? sys::path::Style::windows
+                                       : sys::path::Style::posix;
+  }
+
+  return cachedStyle;
+}
+
+void make_absolute(const Twine &current_directory,
+                   SmallVectorImpl<char> &path) {
+  StringRef p(path.data(), path.size());
+
+  auto pathStyle = getPathStyle();
+
+  bool rootDirectory = sys::path::has_root_directory(p, pathStyle);
+  bool rootName = sys::path::has_root_name(p, pathStyle);
+
+  // Already absolute.
+  if ((rootName || is_style_posix(pathStyle)) && rootDirectory)
+    return;
+
+  // All of the following conditions will need the current directory.
+  SmallString<128> current_dir;
+  current_directory.toVector(current_dir);
+
+  // Relative path. Prepend the current directory.
+  if (!rootName && !rootDirectory) {
+    // Append path to the current directory.
+    sys::path::append(current_dir, pathStyle, p);
+    // Set path to the result.
+    path.swap(current_dir);
+    return;
+  }
+
+  if (!rootName && rootDirectory) {
+    StringRef cdrn = sys::path::root_name(current_dir, pathStyle);
+    SmallString<128> curDirRootName(cdrn.begin(), cdrn.end());
+    sys::path::append(curDirRootName, pathStyle, p);
+    // Set path to the result.
+    path.swap(curDirRootName);
+    return;
+  }
+
+  if (rootName && !rootDirectory) {
+    StringRef pRootName = sys::path::root_name(p, pathStyle);
+    StringRef bRootDirectory =
+        sys::path::root_directory(current_dir, pathStyle);
+    StringRef bRelativePath = sys::path::relative_path(current_dir, pathStyle);
+    StringRef pRelativePath = sys::path::relative_path(p, pathStyle);
+
+    SmallString<128> res;
+    sys::path::append(res, pathStyle, pRootName, bRootDirectory, bRelativePath,
+                      pRelativePath);
+    path.swap(res);
+    return;
+  }
+
+  llvm_unreachable("All rootName and rootDirectory combinations should have "
+                   "occurred above!");
+}
+
+std::error_code make_absolute(SmallVectorImpl<char> &path) {
+  if (sys::path::is_absolute(path, getPathStyle()))
+    return {};
+
+  SmallString<128> current_dir;
+  if (std::error_code ec = current_path(current_dir))
+    return ec;
+
+  make_absolute(current_dir, path);
+  return {};
+}
+
+CustomFileSystem::CustomFileSystem(IntrusiveRefCntPtr<FileSystem> FS)
+    : ProxyFileSystem(std::move(FS)) {}
+
+std::error_code
+CustomFileSystem::makeAbsolute(SmallVectorImpl<char> &Path) const {
+  return make_absolute(Path);
+}
+
+} // namespace vfs
+} // namespace llvm

frontend/src/common/prettier/plugins/clang/CustomFileSystem.h

@@ -0,0 +1,27 @@
+#ifndef CUSTOM_FILE_SYSTEM_H
+#define CUSTOM_FILE_SYSTEM_H
+
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/VirtualFileSystem.h"
+
+namespace llvm {
+namespace vfs {
+
+sys::path::Style getPathStyle();
+std::error_code make_absolute(SmallVectorImpl<char> &path);
+
+class CustomFileSystem : public ProxyFileSystem {
+public:
+  CustomFileSystem(IntrusiveRefCntPtr<FileSystem> FS);
+
+  std::error_code makeAbsolute(SmallVectorImpl<char> &Path) const override;
+};
+
+} // namespace vfs
+} // namespace llvm
+
+#endif // CUSTOM_FILE_SYSTEM_H

frontend/src/common/prettier/plugins/clang/binding.cc

@@ -0,0 +1,26 @@
+#include "lib.h"
+#include <emscripten/bind.h>
+
+using namespace emscripten;
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  register_vector<unsigned>("RangeList");
+
+  value_object<Result>("Result")
+      .field("error", &Result::error)
+      .field("content", &Result::content);
+
+  function<std::string>("version", &version);
+  function<Result, const std::string, const std::string, const std::string>(
+      "format", &format);
+  function<Result, const std::string, const std::string, const std::string,
+           const std::vector<unsigned>>("format_byte", &format_byte);
+  function<Result, const std::string, const std::string, const std::string,
+           const std::vector<unsigned>>("format_line", &format_line);
+  function<void, const std::string>("set_fallback_style", &set_fallback_style);
+  function<void, bool>("set_sort_includes", &set_sort_includes);
+  function<Result, const std::string, const std::string, const std::string>(
+      "dump_config", &dump_config);
+}
+
+int main(void) {}

frontend/src/common/prettier/plugins/clang/clang-format-diff.py

@@ -0,0 +1,197 @@
+#!/usr/bin/env python3
+#
+# ===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===------------------------------------------------------------------------===#
+
+"""
+This script reads input from a unified diff and reformats all the changed
+lines. This is useful to reformat all the lines touched by a specific patch.
+Example usage for git/svn users:
+
+  git diff -U0 --no-color --relative HEAD^ | {clang_format_diff} -p1 -i
+  svn diff --diff-cmd=diff -x-U0 | {clang_format_diff} -i
+
+It should be noted that the filename contained in the diff is used unmodified
+to determine the source file to update. Users calling this script directly
+should be careful to ensure that the path in the diff is correct relative to the
+current working directory.
+"""
+from __future__ import absolute_import, division, print_function
+
+import argparse
+import difflib
+import re
+import subprocess
+import sys
+
+if sys.version_info.major >= 3:
+    from io import StringIO
+else:
+    from io import BytesIO as StringIO
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description=__doc__.format(clang_format_diff="%(prog)s"),
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument(
+        "-i",
+        action="store_true",
+        default=False,
+        help="apply edits to files instead of displaying a diff",
+    )
+    parser.add_argument(
+        "-p",
+        metavar="NUM",
+        default=0,
+        help="strip the smallest prefix containing P slashes",
+    )
+    parser.add_argument(
+        "-regex",
+        metavar="PATTERN",
+        default=None,
+        help="custom pattern selecting file paths to reformat "
+        "(case sensitive, overrides -iregex)",
+    )
+    parser.add_argument(
+        "-iregex",
+        metavar="PATTERN",
+        default=r".*\.(?:cpp|cc|c\+\+|cxx|cppm|ccm|cxxm|c\+\+m|c|cl|h|hh|hpp"
+        r"|hxx|m|mm|inc|js|ts|proto|protodevel|java|cs|json|ipynb|s?vh?)",
+        help="custom pattern selecting file paths to reformat "
+        "(case insensitive, overridden by -regex)",
+    )
+    parser.add_argument(
+        "-sort-includes",
+        action="store_true",
+        default=False,
+        help="let clang-format sort include blocks",
+    )
+    parser.add_argument(
+        "-v",
+        "--verbose",
+        action="store_true",
+        help="be more verbose, ineffective without -i",
+    )
+    parser.add_argument(
+        "-style",
+        help="formatting style to apply (LLVM, GNU, Google, Chromium, "
+        "Microsoft, Mozilla, WebKit)",
+    )
+    parser.add_argument(
+        "-fallback-style",
+        help="The name of the predefined style used as a"
+        "fallback in case clang-format is invoked with"
+        "-style=file, but can not find the .clang-format"
+        "file to use.",
+    )
+    parser.add_argument(
+        "-binary",
+        default="clang-format",
+        help="location of binary to use for clang-format",
+    )
+    args = parser.parse_args()
+
+    # Extract changed lines for each file.
+    filename = None
+    lines_by_file = {}
+    for line in sys.stdin:
+        match = re.search(r"^\+\+\+\ (.*?/){%s}(.+)" % args.p, line.rstrip())
+        if match:
+            filename = match.group(2)
+        if filename is None:
+            continue
+
+        if args.regex is not None:
+            if not re.match("^%s$" % args.regex, filename):
+                continue
+        else:
+            if not re.match("^%s$" % args.iregex, filename, re.IGNORECASE):
+                continue
+
+        match = re.search(r"^@@.*\+(\d+)(?:,(\d+))?", line)
+        if match:
+            start_line = int(match.group(1))
+            line_count = 1
+            if match.group(2):
+                line_count = int(match.group(2))
+                # The input is something like
+                #
+                # @@ -1, +0,0 @@
+                #
+                # which means no lines were added.
+                if line_count == 0:
+                    continue
+            # Also format lines range if line_count is 0 in case of deleting
+            # surrounding statements.
+            end_line = start_line
+            if line_count != 0:
+                end_line += line_count - 1
+            lines_by_file.setdefault(filename, []).extend(
+                ["--lines", str(start_line) + ":" + str(end_line)]
+            )
+
+    # Reformat files containing changes in place.
+    has_diff = False
+    for filename, lines in lines_by_file.items():
+        if args.i and args.verbose:
+            print("Formatting {}".format(filename))
+        command = [args.binary, filename]
+        if args.i:
+            command.append("-i")
+        if args.sort_includes:
+            command.append("--sort-includes")
+        command.extend(lines)
+        if args.style:
+            command.extend(["--style", args.style])
+        if args.fallback_style:
+            command.extend(["--fallback-style", args.fallback_style])
+
+        try:
+            p = subprocess.Popen(
+                command,
+                stdout=subprocess.PIPE,
+                stderr=None,
+                stdin=subprocess.PIPE,
+                universal_newlines=True,
+            )
+        except OSError as e:
+            # Give the user more context when clang-format isn't
+            # found/isn't executable, etc.
+            raise RuntimeError(
+                'Failed to run "%s" - %s"' % (" ".join(command), e.strerror)
+            )
+
+        stdout, _stderr = p.communicate()
+        if p.returncode != 0:
+            return p.returncode
+
+        if not args.i:
+            with open(filename) as f:
+                code = f.readlines()
+            formatted_code = StringIO(stdout).readlines()
+            diff = difflib.unified_diff(
+                code,
+                formatted_code,
+                filename,
+                filename,
+                "(before formatting)",
+                "(after formatting)",
+            )
+            diff_string = "".join(diff)
+            if len(diff_string) > 0:
+                has_diff = True
+                sys.stdout.write(diff_string)
+
+    if has_diff:
+        return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())

frontend/src/common/prettier/plugins/clang/clang-format-node.js

@@ -0,0 +1,10 @@
+import fs from "node:fs/promises";
+import initAsync from "./clang-format.js";
+
+const wasm = new URL("./clang-format.wasm", import.meta.url);
+
+export default function (init = fs.readFile(wasm)) {
+    return initAsync(init);
+}
+
+export * from "./clang-format.js";

frontend/src/common/prettier/plugins/clang/clang-format-vite.js

@@ -0,0 +1,8 @@
+import initAsync from "./clang-format.js";
+import wasm from "./clang-format.wasm?url";
+
+export default function (input = wasm) {
+    return initAsync(input);
+}
+
+export * from "./clang-format.js";

frontend/src/common/prettier/plugins/clang/clang-format.d.ts

@@ -0,0 +1,175 @@
+export type InitInput =
+	| RequestInfo
+	| URL
+	| Response
+	| BufferSource
+	| WebAssembly.Module;
+
+export default function init(input?: InitInput): Promise<void>;
+
+/**
+ * The style to use for formatting.
+ * Supported style values are:
+ *  - `LLVM` - A style complying with the LLVM coding standards.
+ *  - `Google` - A style complying with Google’s C++ style guide.
+ *  - `Chromium` - A style complying with Chromium’s style guide.
+ *  - `Mozilla` - A style complying with Mozilla’s style guide.
+ *  - `WebKit` - A style complying with WebKit’s style guide.
+ *  - `Microsoft` - A style complying with Microsoft’s style guide.
+ *  - `GNU` - A style complying with the GNU coding standards.
+ *  - A string starting with `{`, for example: `{BasedOnStyle: Chromium, IndentWidth: 4, ...}`.
+ *  - A string which represents `.clang-format` content.
+ *
+ */
+export type Style =
+	| "LLVM"
+	| "Google"
+	| "Chromium"
+	| "Mozilla"
+	| "WebKit"
+	| "Microsoft"
+	| "GNU"
+	| (string & {});
+
+/**
+ * The filename to use for determining the language.
+ */
+export type Filename =
+	| "main.c"
+	| "main.cc"
+	| "main.cxx"
+	| "main.cpp"
+	| "main.java"
+	| "main.js"
+	| "main.mjs"
+	| "main.ts"
+	| "main.json"
+	| "main.m"
+	| "main.mm"
+	| "main.proto"
+	| "main.cs"
+	| (string & {});
+
+/**
+ * Formats the given content using the specified style.
+ *
+ * @param {string} content - The content to format.
+ * @param {Filename} filename - The filename to use for determining the language.
+ * @param {Style} style - The style to use for formatting.
+ *   Supported style values are:
+ *   - `LLVM` - A style complying with the LLVM coding standards.
+ *   - `Google` - A style complying with Google’s C++ style guide.
+ *   - `Chromium` - A style complying with Chromium’s style guide.
+ *   - `Mozilla` - A style complying with Mozilla’s style guide.
+ *   - `WebKit` - A style complying with WebKit’s style guide.
+ *   - `Microsoft` - A style complying with Microsoft’s style guide.
+ *   - `GNU` - A style complying with the GNU coding standards.
+ *   - A string starting with `{`, for example: `{BasedOnStyle: Chromium, IndentWidth: 4, ...}`.
+ *   - A string which represents `.clang-format` content.
+ *
+ * @returns {string} The formatted content.
+ * @throws {Error}
+ *
+ * @see {@link https://clang.llvm.org/docs/ClangFormatStyleOptions.html}
+ */
+export declare function format(
+	content: string,
+	filename?: Filename,
+	style?: Style,
+): string;
+
+/**
+ * Both the startLine and endLine are 1-based.
+ */
+export type LineRange = [startLine: number, endLine: number];
+
+/**
+ * Both the offset and length are measured in bytes.
+ */
+export type ByteRange = [offset: number, length: number];
+
+/**
+ * Formats the specified range of lines in the given content using the specified style.
+ *
+ * @param {string} content - The content to format.
+ * @param {LineRange[]} range - Array<[startLine, endLine]> - The range of lines to format.
+ * Both startLine and endLine are 1-based.
+ * Multiple ranges can be formatted by specifying several lines arguments.
+ * @param {Filename} filename - The filename to use for determining the language.
+ * @param {Style} style - The style to use for formatting.
+ *   Supported style values are:
+ *   - `LLVM` - A style complying with the LLVM coding standards.
+ *   - `Google` - A style complying with Google’s C++ style guide.
+ *   - `Chromium` - A style complying with Chromium’s style guide.
+ *   - `Mozilla` - A style complying with Mozilla’s style guide.
+ *   - `WebKit` - A style complying with WebKit’s style guide.
+ *   - `Microsoft` - A style complying with Microsoft’s style guide.
+ *   - `GNU` - A style complying with the GNU coding standards.
+ *   - A string starting with `{`, for example: `{BasedOnStyle: Chromium, IndentWidth: 4, ...}`.
+ *   - A string which represents `.clang-format` content.
+ *
+ * @returns {string} The formatted content.
+ * @throws {Error}
+ *
+ * @see {@link https://clang.llvm.org/docs/ClangFormatStyleOptions.html}
+ */
+export declare function format_line_range(
+	content: string,
+	range: ByteRange[] | [[offset: number]],
+	filename?: Filename,
+	style?: Style,
+): string;
+
+/**
+ * @deprecated Use `format_line_range` instead.
+ */
+export declare function formatLineRange(
+	content: string,
+	range: ByteRange[] | [[offset: number]],
+	filename?: Filename,
+	style?: Style,
+): string;
+
+/**
+ * Formats the specified range of bytes in the given content using the specified style.
+ *
+ * @param {string} content - The content to format.
+ * @param {ByteRange[]} range - Array<[offset, length]> - The range of bytes to format.
+ * @param {Filename} filename - The filename to use for determining the language.
+ * @param {Style} style - The style to use for formatting.
+ *   Supported style values are:
+ *   - `LLVM` - A style complying with the LLVM coding standards.
+ *   - `Google` - A style complying with Google’s C++ style guide.
+ *   - `Chromium` - A style complying with Chromium’s style guide.
+ *   - `Mozilla` - A style complying with Mozilla’s style guide.
+ *   - `WebKit` - A style complying with WebKit’s style guide.
+ *   - `Microsoft` - A style complying with Microsoft’s style guide.
+ *   - `GNU` - A style complying with the GNU coding standards.
+ *   - A string starting with `{`, for example: `{BasedOnStyle: Chromium, IndentWidth: 4, ...}`.
+ *   - A string which represents `.clang-format` content.
+ *
+ * @returns {string} The formatted content.
+ * @throws {Error}
+ *
+ * @see {@link https://clang.llvm.org/docs/ClangFormatStyleOptions.html}
+ */
+export declare function format_byte_range(
+	content: string,
+	range: LineRange[],
+	filename?: Filename,
+	style?: Style,
+): string;
+
+/**
+ * @deprecated Use `format_byte_range` instead.
+ */
+export declare function formatByteRange(
+	content: string,
+	range: LineRange[],
+	filename?: Filename,
+	style?: Style,
+): string;
+
+export declare function version(): string;
+
+export declare function set_fallback_style(style: Style): void;

frontend/src/common/prettier/plugins/clang/cli-pre.js

@@ -0,0 +1,3 @@
+Module.preRun = function customPreRun() {
+    ENV.PWD = process.cwd();
+}

frontend/src/common/prettier/plugins/clang/cli.cc

@@ -0,0 +1,748 @@
+//===-- clang-format/ClangFormat.cpp - Clang format tool ------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements a clang-format tool that automatically formats
+/// (fragments of) C++ code.
+///
+//===----------------------------------------------------------------------===//
+
+#include "clang/../../lib/Format/MatchFilePath.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/Version.h"
+#include "clang/Format/Format.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/Process.h"
+#include <fstream>
+
+#include "CustomFileSystem.h"
+
+using namespace llvm;
+using clang::tooling::Replacements;
+
+static cl::opt<bool> Help("h", cl::desc("Alias for -help"), cl::Hidden);
+
+// Mark all our options with this category, everything else (except for -version
+// and -help) will be hidden.
+static cl::OptionCategory ClangFormatCategory("Clang-format options");
+
+static cl::list<unsigned>
+    Offsets("offset",
+            cl::desc("Format a range starting at this byte offset.\n"
+                     "Multiple ranges can be formatted by specifying\n"
+                     "several -offset and -length pairs.\n"
+                     "Can only be used with one input file."),
+            cl::cat(ClangFormatCategory));
+static cl::list<unsigned>
+    Lengths("length",
+            cl::desc("Format a range of this length (in bytes).\n"
+                     "Multiple ranges can be formatted by specifying\n"
+                     "several -offset and -length pairs.\n"
+                     "When only a single -offset is specified without\n"
+                     "-length, clang-format will format up to the end\n"
+                     "of the file.\n"
+                     "Can only be used with one input file."),
+            cl::cat(ClangFormatCategory));
+static cl::list<std::string>
+    LineRanges("lines",
+               cl::desc("<start line>:<end line> - format a range of\n"
+                        "lines (both 1-based).\n"
+                        "Multiple ranges can be formatted by specifying\n"
+                        "several -lines arguments.\n"
+                        "Can't be used with -offset and -length.\n"
+                        "Can only be used with one input file."),
+               cl::cat(ClangFormatCategory));
+static cl::opt<std::string>
+    Style("style", cl::desc(clang::format::StyleOptionHelpDescription),
+          cl::init(clang::format::DefaultFormatStyle),
+          cl::cat(ClangFormatCategory));
+static cl::opt<std::string>
+    FallbackStyle("fallback-style",
+                  cl::desc("The name of the predefined style used as a\n"
+                           "fallback in case clang-format is invoked with\n"
+                           "-style=file, but can not find the .clang-format\n"
+                           "file to use. Defaults to 'LLVM'.\n"
+                           "Use -fallback-style=none to skip formatting."),
+                  cl::init(clang::format::DefaultFallbackStyle),
+                  cl::cat(ClangFormatCategory));
+
+static cl::opt<std::string> AssumeFileName(
+    "assume-filename",
+    cl::desc("Set filename used to determine the language and to find\n"
+             ".clang-format file.\n"
+             "Only used when reading from stdin.\n"
+             "If this is not passed, the .clang-format file is searched\n"
+             "relative to the current working directory when reading stdin.\n"
+             "Unrecognized filenames are treated as C++.\n"
+             "supported:\n"
+             "  CSharp: .cs\n"
+             "  Java: .java\n"
+             "  JavaScript: .js .mjs .cjs .ts\n"
+             "  Json: .json .ipynb\n"
+             "  Objective-C: .m .mm\n"
+             "  Proto: .proto .protodevel\n"
+             "  TableGen: .td\n"
+             "  TextProto: .txtpb .textpb .pb.txt .textproto .asciipb\n"
+             "  Verilog: .sv .svh .v .vh"),
+    cl::init("<stdin>"), cl::cat(ClangFormatCategory));
+
+static cl::opt<bool> Inplace("i",
+                             cl::desc("Inplace edit <file>s, if specified."),
+                             cl::cat(ClangFormatCategory));
+
+static cl::opt<bool> OutputXML("output-replacements-xml",
+                               cl::desc("Output replacements as XML."),
+                               cl::cat(ClangFormatCategory));
+static cl::opt<bool>
+    DumpConfig("dump-config",
+               cl::desc("Dump configuration options to stdout and exit.\n"
+                        "Can be used with -style option."),
+               cl::cat(ClangFormatCategory));
+static cl::opt<unsigned>
+    Cursor("cursor",
+           cl::desc("The position of the cursor when invoking\n"
+                    "clang-format from an editor integration"),
+           cl::init(0), cl::cat(ClangFormatCategory));
+
+static cl::opt<bool>
+    SortIncludes("sort-includes",
+                 cl::desc("If set, overrides the include sorting behavior\n"
+                          "determined by the SortIncludes style flag"),
+                 cl::cat(ClangFormatCategory));
+
+static cl::opt<std::string> QualifierAlignment(
+    "qualifier-alignment",
+    cl::desc("If set, overrides the qualifier alignment style\n"
+             "determined by the QualifierAlignment style flag"),
+    cl::init(""), cl::cat(ClangFormatCategory));
+
+static cl::opt<std::string> Files(
+    "files",
+    cl::desc("A file containing a list of files to process, one per line."),
+    cl::value_desc("filename"), cl::init(""), cl::cat(ClangFormatCategory));
+
+static cl::opt<bool>
+    Verbose("verbose", cl::desc("If set, shows the list of processed files"),
+            cl::cat(ClangFormatCategory));
+
+// Use --dry-run to match other LLVM tools when you mean do it but don't
+// actually do it
+static cl::opt<bool>
+    DryRun("dry-run",
+           cl::desc("If set, do not actually make the formatting changes"),
+           cl::cat(ClangFormatCategory));
+
+// Use -n as a common command as an alias for --dry-run. (git and make use -n)
+static cl::alias DryRunShort("n", cl::desc("Alias for --dry-run"),
+                             cl::cat(ClangFormatCategory), cl::aliasopt(DryRun),
+                             cl::NotHidden);
+
+// Emulate being able to turn on/off the warning.
+static cl::opt<bool>
+    WarnFormat("Wclang-format-violations",
+               cl::desc("Warnings about individual formatting changes needed. "
+                        "Used only with --dry-run or -n"),
+               cl::init(true), cl::cat(ClangFormatCategory), cl::Hidden);
+
+static cl::opt<bool>
+    NoWarnFormat("Wno-clang-format-violations",
+                 cl::desc("Do not warn about individual formatting changes "
+                          "needed. Used only with --dry-run or -n"),
+                 cl::init(false), cl::cat(ClangFormatCategory), cl::Hidden);
+
+static cl::opt<unsigned> ErrorLimit(
+    "ferror-limit",
+    cl::desc("Set the maximum number of clang-format errors to emit\n"
+             "before stopping (0 = no limit).\n"
+             "Used only with --dry-run or -n"),
+    cl::init(0), cl::cat(ClangFormatCategory));
+
+static cl::opt<bool>
+    WarningsAsErrors("Werror",
+                     cl::desc("If set, changes formatting warnings to errors"),
+                     cl::cat(ClangFormatCategory));
+
+namespace {
+enum class WNoError { Unknown };
+}
+
+static cl::bits<WNoError> WNoErrorList(
+    "Wno-error",
+    cl::desc("If set, don't error out on the specified warning type."),
+    cl::values(
+        clEnumValN(WNoError::Unknown, "unknown",
+                   "If set, unknown format options are only warned about.\n"
+                   "This can be used to enable formatting, even if the\n"
+                   "configuration contains unknown (newer) options.\n"
+                   "Use with caution, as this might lead to dramatically\n"
+                   "differing format depending on an option being\n"
+                   "supported or not.")),
+    cl::cat(ClangFormatCategory));
+
+static cl::opt<bool>
+    ShowColors("fcolor-diagnostics",
+               cl::desc("If set, and on a color-capable terminal controls "
+                        "whether or not to print diagnostics in color"),
+               cl::init(true), cl::cat(ClangFormatCategory), cl::Hidden);
+
+static cl::opt<bool>
+    NoShowColors("fno-color-diagnostics",
+                 cl::desc("If set, and on a color-capable terminal controls "
+                          "whether or not to print diagnostics in color"),
+                 cl::init(false), cl::cat(ClangFormatCategory), cl::Hidden);
+
+static cl::list<std::string> FileNames(cl::Positional,
+                                       cl::desc("[@<file>] [<file> ...]"),
+                                       cl::cat(ClangFormatCategory));
+
+static cl::opt<bool> FailOnIncompleteFormat(
+    "fail-on-incomplete-format",
+    cl::desc("If set, fail with exit code 1 on incomplete format."),
+    cl::init(false), cl::cat(ClangFormatCategory));
+
+static cl::opt<bool> ListIgnored("list-ignored",
+                                 cl::desc("List ignored files."),
+                                 cl::cat(ClangFormatCategory), cl::Hidden);
+
+namespace clang {
+namespace format {
+
+static FileID createInMemoryFile(StringRef FileName, MemoryBufferRef Source,
+                                 SourceManager &Sources, FileManager &Files,
+                                 llvm::vfs::InMemoryFileSystem *MemFS) {
+  MemFS->addFileNoOwn(FileName, 0, Source);
+  auto File = Files.getOptionalFileRef(FileName);
+  assert(File && "File not added to MemFS?");
+  return Sources.createFileID(*File, SourceLocation(), SrcMgr::C_User);
+}
+
+// Parses <start line>:<end line> input to a pair of line numbers.
+// Returns true on error.
+static bool parseLineRange(StringRef Input, unsigned &FromLine,
+                           unsigned &ToLine) {
+  std::pair<StringRef, StringRef> LineRange = Input.split(':');
+  return LineRange.first.getAsInteger(0, FromLine) ||
+         LineRange.second.getAsInteger(0, ToLine);
+}
+
+static bool fillRanges(MemoryBuffer *Code,
+                       std::vector<tooling::Range> &Ranges) {
+  IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new llvm::vfs::InMemoryFileSystem);
+  FileManager Files(FileSystemOptions(), InMemoryFileSystem);
+  DiagnosticOptions DiagOpts;
+  DiagnosticsEngine Diagnostics(
+      IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), DiagOpts);
+  SourceManager Sources(Diagnostics, Files);
+  const auto ID = createInMemoryFile("<irrelevant>", *Code, Sources, Files,
+                                     InMemoryFileSystem.get());
+  if (!LineRanges.empty()) {
+    if (!Offsets.empty() || !Lengths.empty()) {
+      errs() << "error: cannot use -lines with -offset/-length\n";
+      return true;
+    }
+
+    for (const auto &LineRange : LineRanges) {
+      unsigned FromLine, ToLine;
+      if (parseLineRange(LineRange, FromLine, ToLine)) {
+        errs() << "error: invalid <start line>:<end line> pair\n";
+        return true;
+      }
+      if (FromLine < 1) {
+        errs() << "error: start line should be at least 1\n";
+        return true;
+      }
+      if (FromLine > ToLine) {
+        errs() << "error: start line should not exceed end line\n";
+        return true;
+      }
+      const auto Start = Sources.translateLineCol(ID, FromLine, 1);
+      const auto End = Sources.translateLineCol(ID, ToLine, UINT_MAX);
+      if (Start.isInvalid() || End.isInvalid())
+        return true;
+      const auto Offset = Sources.getFileOffset(Start);
+      const auto Length = Sources.getFileOffset(End) - Offset;
+      Ranges.push_back(tooling::Range(Offset, Length));
+    }
+    return false;
+  }
+
+  if (Offsets.empty())
+    Offsets.push_back(0);
+  const bool EmptyLengths = Lengths.empty();
+  unsigned Length = 0;
+  if (Offsets.size() == 1 && EmptyLengths) {
+    Length = Sources.getFileOffset(Sources.getLocForEndOfFile(ID)) - Offsets[0];
+  } else if (Offsets.size() != Lengths.size()) {
+    errs() << "error: number of -offset and -length arguments must match.\n";
+    return true;
+  }
+  for (unsigned I = 0, E = Offsets.size(), CodeSize = Code->getBufferSize();
+       I < E; ++I) {
+    const auto Offset = Offsets[I];
+    if (Offset >= CodeSize) {
+      errs() << "error: offset " << Offset << " is outside the file\n";
+      return true;
+    }
+    if (!EmptyLengths)
+      Length = Lengths[I];
+    if (Offset + Length > CodeSize) {
+      errs() << "error: invalid length " << Length << ", offset + length ("
+             << Offset + Length << ") is outside the file.\n";
+      return true;
+    }
+    Ranges.push_back(tooling::Range(Offset, Length));
+  }
+  return false;
+}
+
+static void outputReplacementXML(StringRef Text) {
+  // FIXME: When we sort includes, we need to make sure the stream is correct
+  // utf-8.
+  size_t From = 0;
+  size_t Index;
+  while ((Index = Text.find_first_of("\n\r<&", From)) != StringRef::npos) {
+    outs() << Text.substr(From, Index - From);
+    switch (Text[Index]) {
+    case '\n':
+      outs() << "&#10;";
+      break;
+    case '\r':
+      outs() << "&#13;";
+      break;
+    case '<':
+      outs() << "&lt;";
+      break;
+    case '&':
+      outs() << "&amp;";
+      break;
+    default:
+      llvm_unreachable("Unexpected character encountered!");
+    }
+    From = Index + 1;
+  }
+  outs() << Text.substr(From);
+}
+
+static void outputReplacementsXML(const Replacements &Replaces) {
+  for (const auto &R : Replaces) {
+    outs() << "<replacement "
+           << "offset='" << R.getOffset() << "' "
+           << "length='" << R.getLength() << "'>";
+    outputReplacementXML(R.getReplacementText());
+    outs() << "</replacement>\n";
+  }
+}
+
+static bool
+emitReplacementWarnings(const Replacements &Replaces, StringRef AssumedFileName,
+                        const std::unique_ptr<llvm::MemoryBuffer> &Code) {
+  unsigned Errors = 0;
+  if (WarnFormat && !NoWarnFormat) {
+    SourceMgr Mgr;
+    const char *StartBuf = Code->getBufferStart();
+
+    Mgr.AddNewSourceBuffer(
+        MemoryBuffer::getMemBuffer(StartBuf, AssumedFileName), SMLoc());
+    for (const auto &R : Replaces) {
+      SMDiagnostic Diag = Mgr.GetMessage(
+          SMLoc::getFromPointer(StartBuf + R.getOffset()),
+          WarningsAsErrors ? SourceMgr::DiagKind::DK_Error
+                           : SourceMgr::DiagKind::DK_Warning,
+          "code should be clang-formatted [-Wclang-format-violations]");
+
+      Diag.print(nullptr, llvm::errs(), ShowColors && !NoShowColors);
+      if (ErrorLimit && ++Errors >= ErrorLimit)
+        break;
+    }
+  }
+  return WarningsAsErrors;
+}
+
+static void outputXML(const Replacements &Replaces,
+                      const Replacements &FormatChanges,
+                      const FormattingAttemptStatus &Status,
+                      const cl::opt<unsigned> &Cursor,
+                      unsigned CursorPosition) {
+  outs() << "<?xml version='1.0'?>\n<replacements "
+            "xml:space='preserve' incomplete_format='"
+         << (Status.FormatComplete ? "false" : "true") << "'";
+  if (!Status.FormatComplete)
+    outs() << " line='" << Status.Line << "'";
+  outs() << ">\n";
+  if (Cursor.getNumOccurrences() != 0) {
+    outs() << "<cursor>" << FormatChanges.getShiftedCodePosition(CursorPosition)
+           << "</cursor>\n";
+  }
+
+  outputReplacementsXML(Replaces);
+  outs() << "</replacements>\n";
+}
+
+class ClangFormatDiagConsumer : public DiagnosticConsumer {
+  virtual void anchor() {}
+
+  void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+                        const Diagnostic &Info) override {
+
+    SmallVector<char, 16> vec;
+    Info.FormatDiagnostic(vec);
+    errs() << "clang-format error:" << vec << "\n";
+  }
+};
+
+// Returns true on error.
+static bool format(StringRef FileName, bool ErrorOnIncompleteFormat = false) {
+  const bool IsSTDIN = FileName == "-";
+  if (!OutputXML && Inplace && IsSTDIN) {
+    errs() << "error: cannot use -i when reading from stdin.\n";
+    return true;
+  }
+  // On Windows, overwriting a file with an open file mapping doesn't work,
+  // so read the whole file into memory when formatting in-place.
+  ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
+      !OutputXML && Inplace
+          ? MemoryBuffer::getFileAsStream(FileName)
+          : MemoryBuffer::getFileOrSTDIN(FileName, /*IsText=*/true);
+  if (std::error_code EC = CodeOrErr.getError()) {
+    errs() << FileName << ": " << EC.message() << "\n";
+    return true;
+  }
+  std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
+  if (Code->getBufferSize() == 0)
+    return false; // Empty files are formatted correctly.
+
+  StringRef BufStr = Code->getBuffer();
+
+  const char *InvalidBOM = SrcMgr::ContentCache::getInvalidBOM(BufStr);
+
+  if (InvalidBOM) {
+    errs() << "error: encoding with unsupported byte order mark \""
+           << InvalidBOM << "\" detected";
+    if (!IsSTDIN)
+      errs() << " in file '" << FileName << "'";
+    errs() << ".\n";
+    return true;
+  }
+
+  std::vector<tooling::Range> Ranges;
+  if (fillRanges(Code.get(), Ranges))
+    return true;
+  StringRef AssumedFileName = IsSTDIN ? AssumeFileName : FileName;
+  if (AssumedFileName.empty()) {
+    llvm::errs() << "error: empty filenames are not allowed\n";
+    return true;
+  }
+
+  auto RealFS = vfs::getRealFileSystem();
+  auto CustomFS = new vfs::CustomFileSystem(RealFS);
+  IntrusiveRefCntPtr<vfs::FileSystem> CustomFSPtr(CustomFS);
+  Expected<FormatStyle> FormatStyle =
+      getStyle(Style, AssumedFileName, FallbackStyle, Code->getBuffer(),
+               CustomFSPtr.get(), WNoErrorList.isSet(WNoError::Unknown));
+  if (!FormatStyle) {
+    llvm::errs() << toString(FormatStyle.takeError()) << "\n";
+    return true;
+  }
+
+  StringRef QualifierAlignmentOrder = QualifierAlignment;
+
+  FormatStyle->QualifierAlignment =
+      StringSwitch<FormatStyle::QualifierAlignmentStyle>(
+          QualifierAlignmentOrder.lower())
+          .Case("right", FormatStyle::QAS_Right)
+          .Case("left", FormatStyle::QAS_Left)
+          .Default(FormatStyle->QualifierAlignment);
+
+  if (FormatStyle->QualifierAlignment == FormatStyle::QAS_Left) {
+    FormatStyle->QualifierOrder = {"const", "volatile", "type"};
+  } else if (FormatStyle->QualifierAlignment == FormatStyle::QAS_Right) {
+    FormatStyle->QualifierOrder = {"type", "const", "volatile"};
+  } else if (QualifierAlignmentOrder.contains("type")) {
+    FormatStyle->QualifierAlignment = FormatStyle::QAS_Custom;
+    SmallVector<StringRef> Qualifiers;
+    QualifierAlignmentOrder.split(Qualifiers, " ", /*MaxSplit=*/-1,
+                                  /*KeepEmpty=*/false);
+    FormatStyle->QualifierOrder = {Qualifiers.begin(), Qualifiers.end()};
+  }
+
+  if (SortIncludes.getNumOccurrences() != 0) {
+    FormatStyle->SortIncludes = {};
+    if (SortIncludes)
+      FormatStyle->SortIncludes.Enabled = true;
+  }
+  unsigned CursorPosition = Cursor;
+  Replacements Replaces = sortIncludes(*FormatStyle, Code->getBuffer(), Ranges,
+                                       AssumedFileName, &CursorPosition);
+
+  const bool IsJson = FormatStyle->isJson();
+
+  // To format JSON insert a variable to trick the code into thinking its
+  // JavaScript.
+  if (IsJson && !FormatStyle->DisableFormat) {
+    auto Err =
+        Replaces.add(tooling::Replacement(AssumedFileName, 0, 0, "x = "));
+    if (Err)
+      llvm::errs() << "Bad Json variable insertion\n";
+  }
+
+  auto ChangedCode = tooling::applyAllReplacements(Code->getBuffer(), Replaces);
+  if (!ChangedCode) {
+    llvm::errs() << toString(ChangedCode.takeError()) << "\n";
+    return true;
+  }
+  // Get new affected ranges after sorting `#includes`.
+  Ranges = tooling::calculateRangesAfterReplacements(Replaces, Ranges);
+  FormattingAttemptStatus Status;
+  Replacements FormatChanges =
+      reformat(*FormatStyle, *ChangedCode, Ranges, AssumedFileName, &Status);
+  Replaces = Replaces.merge(FormatChanges);
+  if (DryRun) {
+    return Replaces.size() > (IsJson ? 1u : 0u) &&
+           emitReplacementWarnings(Replaces, AssumedFileName, Code);
+  }
+  if (OutputXML) {
+    outputXML(Replaces, FormatChanges, Status, Cursor, CursorPosition);
+  } else {
+    IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
+        new llvm::vfs::InMemoryFileSystem);
+    FileManager Files(FileSystemOptions(), InMemoryFileSystem);
+
+    DiagnosticOptions DiagOpts;
+    ClangFormatDiagConsumer IgnoreDiagnostics;
+    DiagnosticsEngine Diagnostics(
+        IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), DiagOpts,
+        &IgnoreDiagnostics, false);
+    SourceManager Sources(Diagnostics, Files);
+    FileID ID = createInMemoryFile(AssumedFileName, *Code, Sources, Files,
+                                   InMemoryFileSystem.get());
+    Rewriter Rewrite(Sources, LangOptions());
+    tooling::applyAllReplacements(Replaces, Rewrite);
+    if (Inplace) {
+      if (Rewrite.overwriteChangedFiles())
+        return true;
+    } else {
+      if (Cursor.getNumOccurrences() != 0) {
+        outs() << "{ \"Cursor\": "
+               << FormatChanges.getShiftedCodePosition(CursorPosition)
+               << ", \"IncompleteFormat\": "
+               << (Status.FormatComplete ? "false" : "true");
+        if (!Status.FormatComplete)
+          outs() << ", \"Line\": " << Status.Line;
+        outs() << " }\n";
+      }
+      Rewrite.getEditBuffer(ID).write(outs());
+    }
+  }
+  return ErrorOnIncompleteFormat && !Status.FormatComplete;
+}
+
+} // namespace format
+} // namespace clang
+
+static void PrintVersion(raw_ostream &OS) {
+  OS << clang::getClangToolFullVersion("clang-format") << '\n';
+}
+
+// Dump the configuration.
+static int dumpConfig() {
+  std::unique_ptr<llvm::MemoryBuffer> Code;
+  // We can't read the code to detect the language if there's no file name.
+  if (!FileNames.empty()) {
+    // Read in the code in case the filename alone isn't enough to detect the
+    // language.
+    ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
+        MemoryBuffer::getFileOrSTDIN(FileNames[0], /*IsText=*/true);
+    if (std::error_code EC = CodeOrErr.getError()) {
+      llvm::errs() << EC.message() << "\n";
+      return 1;
+    }
+    Code = std::move(CodeOrErr.get());
+  }
+
+  auto RealFS = vfs::getRealFileSystem();
+  auto CustomFS = new vfs::CustomFileSystem(RealFS);
+  IntrusiveRefCntPtr<vfs::FileSystem> CustomFSPtr(CustomFS);
+
+  Expected<clang::format::FormatStyle> FormatStyle = clang::format::getStyle(
+      Style,
+      FileNames.empty() || FileNames[0] == "-" ? AssumeFileName : FileNames[0],
+      FallbackStyle, Code ? Code->getBuffer() : "", CustomFSPtr.get());
+  if (!FormatStyle) {
+    llvm::errs() << toString(FormatStyle.takeError()) << "\n";
+    return 1;
+  }
+  std::string Config = clang::format::configurationAsText(*FormatStyle);
+  outs() << Config << "\n";
+  return 0;
+}
+
+using String = SmallString<128>;
+static String IgnoreDir;             // Directory of .clang-format-ignore file.
+static String PrevDir;               // Directory of previous `FilePath`.
+static SmallVector<String> Patterns; // Patterns in .clang-format-ignore file.
+
+// Check whether `FilePath` is ignored according to the nearest
+// .clang-format-ignore file based on the rules below:
+// - A blank line is skipped.
+// - Leading and trailing spaces of a line are trimmed.
+// - A line starting with a hash (`#`) is a comment.
+// - A non-comment line is a single pattern.
+// - The slash (`/`) is used as the directory separator.
+// - A pattern is relative to the directory of the .clang-format-ignore file (or
+//   the root directory if the pattern starts with a slash).
+// - A pattern is negated if it starts with a bang (`!`).
+static bool isIgnored(StringRef FilePath) {
+  using namespace llvm::sys::fs;
+  if (!is_regular_file(FilePath))
+    return false;
+
+  String Path;
+  String AbsPath{FilePath};
+
+  auto PathStyle = vfs::getPathStyle();
+
+  using namespace llvm::sys::path;
+  vfs::make_absolute(AbsPath);
+  remove_dots(AbsPath, /*remove_dot_dot=*/true, PathStyle);
+
+  if (StringRef Dir{parent_path(AbsPath, PathStyle)}; PrevDir != Dir) {
+    PrevDir = Dir;
+
+    for (;;) {
+      Path = Dir;
+      append(Path, PathStyle, ".clang-format-ignore");
+      if (is_regular_file(Path))
+        break;
+      Dir = parent_path(Dir, PathStyle);
+      if (Dir.empty())
+        return false;
+    }
+
+    IgnoreDir = convert_to_slash(Dir, PathStyle);
+
+    std::ifstream IgnoreFile{Path.c_str()};
+    if (!IgnoreFile.good())
+      return false;
+
+    Patterns.clear();
+
+    for (std::string Line; std::getline(IgnoreFile, Line);) {
+      if (const auto Pattern{StringRef{Line}.trim()};
+          // Skip empty and comment lines.
+          !Pattern.empty() && Pattern[0] != '#') {
+        Patterns.push_back(Pattern);
+      }
+    }
+  }
+
+  if (IgnoreDir.empty())
+    return false;
+
+  const auto Pathname{convert_to_slash(AbsPath, PathStyle)};
+  for (const auto &Pat : Patterns) {
+    const bool IsNegated = Pat[0] == '!';
+    StringRef Pattern{Pat};
+    if (IsNegated)
+      Pattern = Pattern.drop_front();
+
+    if (Pattern.empty())
+      continue;
+
+    Pattern = Pattern.ltrim();
+
+    // `Pattern` is relative to `IgnoreDir` unless it starts with a slash.
+    // This doesn't support patterns containing drive names (e.g. `C:`).
+    if (Pattern[0] != '/') {
+      Path = IgnoreDir;
+      append(Path, Style::posix, Pattern);
+      remove_dots(Path, /*remove_dot_dot=*/true, Style::posix);
+      Pattern = Path;
+    }
+
+    if (clang::format::matchFilePath(Pattern, Pathname) == !IsNegated)
+      return true;
+  }
+
+  return false;
+}
+
+int main(int argc, const char **argv) {
+  InitLLVM X(argc, argv);
+
+  cl::HideUnrelatedOptions(ClangFormatCategory);
+
+  cl::SetVersionPrinter(PrintVersion);
+  cl::ParseCommandLineOptions(
+      argc, argv,
+      "A tool to format C/C++/Java/JavaScript/JSON/Objective-C/Protobuf/C# "
+      "code.\n\n"
+      "If no arguments are specified, it formats the code from standard input\n"
+      "and writes the result to the standard output.\n"
+      "If <file>s are given, it reformats the files. If -i is specified\n"
+      "together with <file>s, the files are edited in-place. Otherwise, the\n"
+      "result is written to the standard output.\n");
+
+  if (Help) {
+    cl::PrintHelpMessage();
+    return 0;
+  }
+
+  if (DumpConfig)
+    return dumpConfig();
+
+  if (!Files.empty()) {
+    std::ifstream ExternalFileOfFiles{std::string(Files)};
+    std::string Line;
+    unsigned LineNo = 1;
+    while (std::getline(ExternalFileOfFiles, Line)) {
+      FileNames.push_back(Line);
+      LineNo++;
+    }
+    errs() << "Clang-formatting " << LineNo << " files\n";
+  }
+
+  if (FileNames.empty()) {
+    if (isIgnored(AssumeFileName))
+      return 0;
+    return clang::format::format("-", FailOnIncompleteFormat);
+  }
+
+  if (FileNames.size() > 1 &&
+      (!Offsets.empty() || !Lengths.empty() || !LineRanges.empty())) {
+    errs() << "error: -offset, -length and -lines can only be used for "
+              "single file.\n";
+    return 1;
+  }
+
+  unsigned FileNo = 1;
+  bool Error = false;
+  for (const auto &FileName : FileNames) {
+    const bool Ignored = isIgnored(FileName);
+    if (ListIgnored) {
+      if (Ignored)
+        outs() << FileName << '\n';
+      continue;
+    }
+    if (Ignored)
+      continue;
+    if (Verbose) {
+      errs() << "Formatting [" << FileNo++ << "/" << FileNames.size() << "] "
+             << FileName << "\n";
+    }
+    Error |= clang::format::format(FileName, FailOnIncompleteFormat);
+  }
+  return Error ? 1 : 0;
+}

frontend/src/common/prettier/plugins/clang/git-clang-format

@@ -0,0 +1,858 @@
+#!/usr/bin/env python3
+#
+# ===- git-clang-format - ClangFormat Git Integration -------*- python -*--=== #
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------=== #
+
+r"""
+clang-format git integration
+============================
+
+This file provides a clang-format integration for git. Put it somewhere in your
+path and ensure that it is executable. Then, "git clang-format" will invoke
+clang-format on the changes in current files or a specific commit.
+
+For further details, run:
+git clang-format -h
+
+Requires Python version >=3.8
+"""
+
+from __future__ import absolute_import, division, print_function
+import argparse
+import collections
+import contextlib
+import errno
+import os
+import re
+import subprocess
+import sys
+
+usage = "git clang-format [OPTIONS] [<commit>] [<commit>|--staged] [--] [<file>...]"
+
+desc = """
+If zero or one commits are given, run clang-format on all lines that differ
+between the working directory and <commit>, which defaults to HEAD.  Changes are
+only applied to the working directory, or in the stage/index.
+
+Examples:
+  To format staged changes, i.e everything that's been `git add`ed:
+    git clang-format
+
+  To also format everything touched in the most recent commit:
+    git clang-format HEAD~1
+
+  If you're on a branch off main, to format everything touched on your branch:
+    git clang-format main
+
+If two commits are given (requires --diff), run clang-format on all lines in the
+second <commit> that differ from the first <commit>.
+
+The following git-config settings set the default of the corresponding option:
+  clangFormat.binary
+  clangFormat.commit
+  clangFormat.extensions
+  clangFormat.style
+"""
+
+# Name of the temporary index file in which save the output of clang-format.
+# This file is created within the .git directory.
+temp_index_basename = "clang-format-index"
+
+
+Range = collections.namedtuple("Range", "start, count")
+
+
+def main():
+    config = load_git_config()
+
+    # In order to keep '--' yet allow options after positionals, we need to
+    # check for '--' ourselves.  (Setting nargs='*' throws away the '--', while
+    # nargs=argparse.REMAINDER disallows options after positionals.)
+    argv = sys.argv[1:]
+    try:
+        idx = argv.index("--")
+    except ValueError:
+        dash_dash = []
+    else:
+        dash_dash = argv[idx:]
+        argv = argv[:idx]
+
+    default_extensions = ",".join(
+        [
+            # From clang/lib/Frontend/FrontendOptions.cpp, all lower case
+            "c",
+            "h",  # C
+            "m",  # ObjC
+            "mm",  # ObjC++
+            "cc",
+            "cp",
+            "cpp",
+            "c++",
+            "cxx",
+            "hh",
+            "hpp",
+            "hxx",
+            "inc",  # C++
+            "ccm",
+            "cppm",
+            "cxxm",
+            "c++m",  # C++ Modules
+            "cu",
+            "cuh",  # CUDA
+            "cl",  # OpenCL
+            # Other languages that clang-format supports
+            "proto",
+            "protodevel",  # Protocol Buffers
+            "java",  # Java
+            "js",
+            "mjs",
+            "cjs",  # JavaScript
+            "ts",  # TypeScript
+            "cs",  # C Sharp
+            "json",
+            "ipynb",  # Json
+            "sv",
+            "svh",
+            "v",
+            "vh",  # Verilog
+            "td",  # TableGen
+            "txtpb",
+            "textpb",
+            "pb.txt",
+            "textproto",
+            "asciipb",  # TextProto
+        ]
+    )
+
+    p = argparse.ArgumentParser(
+        usage=usage,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        description=desc,
+    )
+    p.add_argument(
+        "--binary",
+        default=config.get("clangformat.binary", "clang-format"),
+        help="path to clang-format",
+    ),
+    p.add_argument(
+        "--commit",
+        default=config.get("clangformat.commit", "HEAD"),
+        help="default commit to use if none is specified",
+    ),
+    p.add_argument(
+        "--diff",
+        action="store_true",
+        help="print a diff instead of applying the changes",
+    )
+    p.add_argument(
+        "--diffstat",
+        action="store_true",
+        help="print a diffstat instead of applying the changes",
+    )
+    p.add_argument(
+        "--extensions",
+        default=config.get("clangformat.extensions", default_extensions),
+        help=(
+            "comma-separated list of file extensions to format, "
+            "excluding the period and case-insensitive"
+        ),
+    ),
+    p.add_argument(
+        "-f",
+        "--force",
+        action="store_true",
+        help="allow changes to unstaged files",
+    )
+    p.add_argument(
+        "-p", "--patch", action="store_true", help="select hunks interactively"
+    )
+    p.add_argument(
+        "-q",
+        "--quiet",
+        action="count",
+        default=0,
+        help="print less information",
+    )
+    p.add_argument(
+        "--staged",
+        "--cached",
+        action="store_true",
+        help="format lines in the stage instead of the working dir",
+    )
+    p.add_argument(
+        "--style",
+        default=config.get("clangformat.style", None),
+        help="passed to clang-format",
+    ),
+    p.add_argument(
+        "-v",
+        "--verbose",
+        action="count",
+        default=0,
+        help="print extra information",
+    )
+    p.add_argument(
+        "--diff_from_common_commit",
+        action="store_true",
+        help=(
+            "diff from the last common commit for commits in "
+            "separate branches rather than the exact point of the "
+            "commits"
+        ),
+    )
+    # We gather all the remaining positional arguments into 'args' since we need
+    # to use some heuristics to determine whether or not <commit> was present.
+    # However, to print pretty messages, we make use of metavar and help.
+    p.add_argument(
+        "args",
+        nargs="*",
+        metavar="<commit>",
+        help="revision from which to compute the diff",
+    )
+    p.add_argument(
+        "ignored",
+        nargs="*",
+        metavar="<file>...",
+        help="if specified, only consider differences in these files",
+    )
+    opts = p.parse_args(argv)
+
+    opts.verbose -= opts.quiet
+    del opts.quiet
+
+    commits, files = interpret_args(opts.args, dash_dash, opts.commit)
+    if len(commits) > 2:
+        die("at most two commits allowed; %d given" % len(commits))
+    if len(commits) == 2:
+        if opts.staged:
+            die("--staged is not allowed when two commits are given")
+        if not opts.diff:
+            die("--diff is required when two commits are given")
+    elif opts.diff_from_common_commit:
+        die("--diff_from_common_commit is only allowed when two commits are given")
+
+    if os.path.dirname(opts.binary):
+        opts.binary = os.path.abspath(opts.binary)
+
+    changed_lines = compute_diff_and_extract_lines(
+        commits, files, opts.staged, opts.diff_from_common_commit
+    )
+    if opts.verbose >= 1:
+        ignored_files = set(changed_lines)
+    filter_by_extension(changed_lines, opts.extensions.lower().split(","))
+    # The computed diff outputs absolute paths, so we must cd before accessing
+    # those files.
+    cd_to_toplevel()
+    filter_symlinks(changed_lines)
+    filter_ignored_files(changed_lines, binary=opts.binary)
+    if opts.verbose >= 1:
+        ignored_files.difference_update(changed_lines)
+        if ignored_files:
+            print(
+                "Ignoring the following files (wrong extension, symlink, or "
+                "ignored by clang-format):"
+            )
+            for filename in ignored_files:
+                print("    %s" % filename)
+        if changed_lines:
+            print("Running clang-format on the following files:")
+            for filename in changed_lines:
+                print("    %s" % filename)
+
+    if not changed_lines:
+        if opts.verbose >= 0:
+            print("no modified files to format")
+        return 0
+
+    if len(commits) > 1:
+        old_tree = commits[1]
+        revision = old_tree
+    elif opts.staged:
+        old_tree = create_tree_from_index(changed_lines)
+        revision = ""
+    else:
+        old_tree = create_tree_from_workdir(changed_lines)
+        revision = None
+    new_tree = run_clang_format_and_save_to_tree(
+        changed_lines, revision, binary=opts.binary, style=opts.style
+    )
+    if opts.verbose >= 1:
+        print("old tree: %s" % old_tree)
+        print("new tree: %s" % new_tree)
+
+    if old_tree == new_tree:
+        if opts.verbose >= 0:
+            print("clang-format did not modify any files")
+        return 0
+
+    if opts.diff:
+        return print_diff(old_tree, new_tree)
+    if opts.diffstat:
+        return print_diffstat(old_tree, new_tree)
+
+    changed_files = apply_changes(
+        old_tree, new_tree, force=opts.force, patch_mode=opts.patch
+    )
+    if (opts.verbose >= 0 and not opts.patch) or opts.verbose >= 1:
+        print("changed files:")
+        for filename in changed_files:
+            print("    %s" % filename)
+
+    return 1
+
+
+def load_git_config(non_string_options=None):
+    """Return the git configuration as a dictionary.
+
+    All options are assumed to be strings unless in `non_string_options`, in
+    which is a dictionary mapping option name (in lower case) to either "--bool"
+    or "--int"."""
+    if non_string_options is None:
+        non_string_options = {}
+    out = {}
+    for entry in run("git", "config", "--list", "--null").split("\0"):
+        if entry:
+            if "\n" in entry:
+                name, value = entry.split("\n", 1)
+            else:
+                # A setting with no '=' ('\n' with --null) is implicitly 'true'
+                name = entry
+                value = "true"
+            if name in non_string_options:
+                value = run("git", "config", non_string_options[name], name)
+            out[name] = value
+    return out
+
+
+def interpret_args(args, dash_dash, default_commit):
+    """Interpret `args` as "[commits] [--] [files]" and return (commits, files).
+
+    It is assumed that "--" and everything that follows has been removed from
+    args and placed in `dash_dash`.
+
+    If "--" is present (i.e., `dash_dash` is non-empty), the arguments to its
+    left (if present) are taken as commits.  Otherwise, the arguments are
+    checked from left to right if they are commits or files.  If commits are not
+    given, a list with `default_commit` is used."""
+    if dash_dash:
+        if len(args) == 0:
+            commits = [default_commit]
+        else:
+            commits = args
+        for commit in commits:
+            object_type = get_object_type(commit)
+            if object_type not in ("commit", "tag"):
+                if object_type is None:
+                    die("'%s' is not a commit" % commit)
+                else:
+                    die(
+                        "'%s' is a %s, but a commit was expected"
+                        % (commit, object_type)
+                    )
+        files = dash_dash[1:]
+    elif args:
+        commits = []
+        while args:
+            if not disambiguate_revision(args[0]):
+                break
+            commits.append(args.pop(0))
+        if not commits:
+            commits = [default_commit]
+        files = args
+    else:
+        commits = [default_commit]
+        files = []
+    return commits, files
+
+
+def disambiguate_revision(value):
+    """Returns True if `value` is a revision, False if it is a file, or dies."""
+    # If `value` is ambiguous (neither a commit nor a file), the following
+    # command will die with an appropriate error message.
+    run("git", "rev-parse", value, verbose=False)
+    object_type = get_object_type(value)
+    if object_type is None:
+        return False
+    if object_type in ("commit", "tag"):
+        return True
+    die("`%s` is a %s, but a commit or filename was expected" % (value, object_type))
+
+
+def get_object_type(value):
+    """Returns a string description of an object's type, or None if it is not
+    a valid git object."""
+    cmd = ["git", "cat-file", "-t", value]
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    stdout, stderr = p.communicate()
+    if p.returncode != 0:
+        return None
+    return convert_string(stdout.strip())
+
+
+def compute_diff_and_extract_lines(commits, files, staged, diff_common_commit):
+    """Calls compute_diff() followed by extract_lines()."""
+    diff_process = compute_diff(commits, files, staged, diff_common_commit)
+    changed_lines = extract_lines(diff_process.stdout)
+    diff_process.stdout.close()
+    diff_process.wait()
+    if diff_process.returncode != 0:
+        # Assume error was already printed to stderr.
+        sys.exit(2)
+    return changed_lines
+
+
+def compute_diff(commits, files, staged, diff_common_commit):
+    """Return a subprocess object producing the diff from `commits`.
+
+    The return value's `stdin` file object will produce a patch with the
+    differences between the working directory (or stage if --staged is used) and
+    the first commit if a single one was specified, or the difference between
+    both specified commits, filtered on `files` (if non-empty).
+    Zero context lines are used in the patch."""
+    git_tool = "diff-index"
+    extra_args = []
+    if len(commits) == 2:
+        git_tool = "diff-tree"
+        if diff_common_commit:
+            commits = [f"{commits[0]}...{commits[1]}"]
+    elif staged:
+        extra_args += ["--cached"]
+
+    cmd = ["git", git_tool, "-p", "-U0"] + extra_args + commits + ["--"]
+    cmd.extend(files)
+    p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+    p.stdin.close()
+    return p
+
+
+def extract_lines(patch_file):
+    """Extract the changed lines in `patch_file`.
+
+    The return value is a dictionary mapping filename to a list of (start_line,
+    line_count) pairs.
+
+    The input must have been produced with ``-U0``, meaning unidiff format with
+    zero lines of context.  The return value is a dict mapping filename to a
+    list of line `Range`s."""
+    matches = {}
+    for line in patch_file:
+        line = convert_string(line)
+        match = re.search(r"^\+\+\+\ [^/]+/(.*)", line)
+        if match:
+            filename = match.group(1).rstrip("\r\n\t")
+        match = re.search(r"^@@ -[0-9,]+ \+(\d+)(,(\d+))?", line)
+        if match:
+            start_line = int(match.group(1))
+            line_count = 1
+            if match.group(3):
+                line_count = int(match.group(3))
+            if line_count == 0:
+                line_count = 1
+            if start_line == 0:
+                continue
+            matches.setdefault(filename, []).append(Range(start_line, line_count))
+    return matches
+
+
+def filter_by_extension(dictionary, allowed_extensions):
+    """Delete every key in `dictionary` that doesn't have an allowed extension.
+
+    `allowed_extensions` must be a collection of lowercase file extensions,
+    excluding the period."""
+    allowed_extensions = frozenset(allowed_extensions)
+    for filename in list(dictionary.keys()):
+        base_ext = filename.rsplit(".", 1)
+        if len(base_ext) == 1 and "" in allowed_extensions:
+            continue
+        if len(base_ext) == 1 or base_ext[1].lower() not in allowed_extensions:
+            del dictionary[filename]
+
+
+def filter_symlinks(dictionary):
+    """Delete every key in `dictionary` that is a symlink."""
+    for filename in list(dictionary.keys()):
+        if os.path.islink(filename):
+            del dictionary[filename]
+
+
+def filter_ignored_files(dictionary, binary):
+    """Delete every key in `dictionary` that is ignored by clang-format."""
+    ignored_files = run(binary, "-list-ignored", *dictionary.keys())
+    if not ignored_files:
+        return
+    ignored_files = ignored_files.split("\n")
+    for filename in ignored_files:
+        del dictionary[filename]
+
+
+def cd_to_toplevel():
+    """Change to the top level of the git repository."""
+    toplevel = run("git", "rev-parse", "--show-toplevel")
+    os.chdir(toplevel)
+
+
+def create_tree_from_workdir(filenames):
+    """Create a new git tree with the given files from the working directory.
+
+    Returns the object ID (SHA-1) of the created tree."""
+    return create_tree(filenames, "--stdin")
+
+
+def create_tree_from_index(filenames):
+    # Copy the environment, because the files have to be read from the original
+    # index.
+    env = os.environ.copy()
+
+    def index_contents_generator():
+        for filename in filenames:
+            git_ls_files_cmd = [
+                "git",
+                "ls-files",
+                "--stage",
+                "-z",
+                "--",
+                filename,
+            ]
+            git_ls_files = subprocess.Popen(
+                git_ls_files_cmd,
+                env=env,
+                stdin=subprocess.PIPE,
+                stdout=subprocess.PIPE,
+            )
+            stdout = git_ls_files.communicate()[0]
+            yield convert_string(stdout.split(b"\0")[0])
+
+    return create_tree(index_contents_generator(), "--index-info")
+
+
+def run_clang_format_and_save_to_tree(
+    changed_lines, revision=None, binary="clang-format", style=None
+):
+    """Run clang-format on each file and save the result to a git tree.
+
+    Returns the object ID (SHA-1) of the created tree."""
+    # Copy the environment when formatting the files in the index, because the
+    # files have to be read from the original index.
+    env = os.environ.copy() if revision == "" else None
+
+    def iteritems(container):
+        try:
+            return container.iteritems()  # Python 2
+        except AttributeError:
+            return container.items()  # Python 3
+
+    def index_info_generator():
+        for filename, line_ranges in iteritems(changed_lines):
+            if revision is not None:
+                if len(revision) > 0:
+                    git_metadata_cmd = [
+                        "git",
+                        "ls-tree",
+                        "%s:%s" % (revision, os.path.dirname(filename)),
+                        os.path.basename(filename),
+                    ]
+                else:
+                    git_metadata_cmd = [
+                        "git",
+                        "ls-files",
+                        "--stage",
+                        "--",
+                        filename,
+                    ]
+                git_metadata = subprocess.Popen(
+                    git_metadata_cmd,
+                    env=env,
+                    stdin=subprocess.PIPE,
+                    stdout=subprocess.PIPE,
+                )
+                stdout = git_metadata.communicate()[0]
+                mode = oct(int(stdout.split()[0], 8))
+            else:
+                mode = oct(os.stat(filename).st_mode)
+            # Adjust python3 octal format so that it matches what git expects
+            if mode.startswith("0o"):
+                mode = "0" + mode[2:]
+            blob_id = clang_format_to_blob(
+                filename,
+                line_ranges,
+                revision=revision,
+                binary=binary,
+                style=style,
+                env=env,
+            )
+            yield "%s %s\t%s" % (mode, blob_id, filename)
+
+    return create_tree(index_info_generator(), "--index-info")
+
+
+def create_tree(input_lines, mode):
+    """Create a tree object from the given input.
+
+    If mode is '--stdin', it must be a list of filenames.  If mode is
+    '--index-info' is must be a list of values suitable for "git update-index
+    --index-info", such as "<mode> <SP> <sha1> <TAB> <filename>".  Any other
+    mode is invalid."""
+    assert mode in ("--stdin", "--index-info")
+    cmd = ["git", "update-index", "--add", "-z", mode]
+    with temporary_index_file():
+        p = subprocess.Popen(cmd, stdin=subprocess.PIPE)
+        for line in input_lines:
+            p.stdin.write(to_bytes("%s\0" % line))
+        p.stdin.close()
+        if p.wait() != 0:
+            die("`%s` failed" % " ".join(cmd))
+        tree_id = run("git", "write-tree")
+        return tree_id
+
+
+def clang_format_to_blob(
+    filename,
+    line_ranges,
+    revision=None,
+    binary="clang-format",
+    style=None,
+    env=None,
+):
+    """Run clang-format on the given file and save the result to a git blob.
+
+    Runs on the file in `revision` if not None, or on the file in the working
+    directory if `revision` is None. Revision can be set to an empty string to
+    run clang-format on the file in the index.
+
+    Returns the object ID (SHA-1) of the created blob."""
+    clang_format_cmd = [binary]
+    if style:
+        clang_format_cmd.extend(["--style=" + style])
+    clang_format_cmd.extend(
+        [
+            "--lines=%s:%s" % (start_line, start_line + line_count - 1)
+            for start_line, line_count in line_ranges
+        ]
+    )
+    if revision is not None:
+        clang_format_cmd.extend(["--assume-filename=" + filename])
+        git_show_cmd = [
+            "git",
+            "cat-file",
+            "blob",
+            "%s:%s" % (revision, filename),
+        ]
+        git_show = subprocess.Popen(
+            git_show_cmd, env=env, stdin=subprocess.PIPE, stdout=subprocess.PIPE
+        )
+        git_show.stdin.close()
+        clang_format_stdin = git_show.stdout
+    else:
+        clang_format_cmd.extend([filename])
+        git_show = None
+        clang_format_stdin = subprocess.PIPE
+    try:
+        clang_format = subprocess.Popen(
+            clang_format_cmd, stdin=clang_format_stdin, stdout=subprocess.PIPE
+        )
+        if clang_format_stdin == subprocess.PIPE:
+            clang_format_stdin = clang_format.stdin
+    except OSError as e:
+        if e.errno == errno.ENOENT:
+            die('cannot find executable "%s"' % binary)
+        else:
+            raise
+    clang_format_stdin.close()
+    hash_object_cmd = [
+        "git",
+        "hash-object",
+        "-w",
+        "--path=" + filename,
+        "--stdin",
+    ]
+    hash_object = subprocess.Popen(
+        hash_object_cmd, stdin=clang_format.stdout, stdout=subprocess.PIPE
+    )
+    clang_format.stdout.close()
+    stdout = hash_object.communicate()[0]
+    if hash_object.returncode != 0:
+        die("`%s` failed" % " ".join(hash_object_cmd))
+    if clang_format.wait() != 0:
+        die("`%s` failed" % " ".join(clang_format_cmd))
+    if git_show and git_show.wait() != 0:
+        die("`%s` failed" % " ".join(git_show_cmd))
+    return convert_string(stdout).rstrip("\r\n")
+
+
+@contextlib.contextmanager
+def temporary_index_file(tree=None):
+    """Context manager for setting GIT_INDEX_FILE to a temporary file and
+    deleting the file afterward."""
+    index_path = create_temporary_index(tree)
+    old_index_path = os.environ.get("GIT_INDEX_FILE")
+    os.environ["GIT_INDEX_FILE"] = index_path
+    try:
+        yield
+    finally:
+        if old_index_path is None:
+            del os.environ["GIT_INDEX_FILE"]
+        else:
+            os.environ["GIT_INDEX_FILE"] = old_index_path
+        os.remove(index_path)
+
+
+def create_temporary_index(tree=None):
+    """Create a temporary index file and return the created file's path.
+
+    If `tree` is not None, use that as the tree to read in.  Otherwise, an
+    empty index is created."""
+    gitdir = run("git", "rev-parse", "--git-dir")
+    path = os.path.join(gitdir, temp_index_basename)
+    if tree is None:
+        tree = "--empty"
+    run("git", "read-tree", "--index-output=" + path, tree)
+    return path
+
+
+def print_diff(old_tree, new_tree):
+    """Print the diff between the two trees to stdout."""
+    # We use the porcelain 'diff' and not plumbing 'diff-tree' because the
+    # output is expected to be viewed by the user, and only the former does nice
+    # things like color and pagination.
+    #
+    # We also only print modified files since `new_tree` only contains the files
+    # that were modified, so unmodified files would show as deleted without the
+    # filter.
+    return subprocess.run(
+        ["git", "diff", "--diff-filter=M", "--exit-code", old_tree, new_tree]
+    ).returncode
+
+
+def print_diffstat(old_tree, new_tree):
+    """Print the diffstat between the two trees to stdout."""
+    # We use the porcelain 'diff' and not plumbing 'diff-tree' because the
+    # output is expected to be viewed by the user, and only the former does nice
+    # things like color and pagination.
+    #
+    # We also only print modified files since `new_tree` only contains the files
+    # that were modified, so unmodified files would show as deleted without the
+    # filter.
+    return subprocess.run(
+        [
+            "git",
+            "diff",
+            "--diff-filter=M",
+            "--exit-code",
+            "--stat",
+            old_tree,
+            new_tree,
+        ]
+    ).returncode
+
+
+def apply_changes(old_tree, new_tree, force=False, patch_mode=False):
+    """Apply the changes in `new_tree` to the working directory.
+
+    Bails if there are local changes in those files and not `force`.  If
+    `patch_mode`, runs `git checkout --patch` to select hunks interactively."""
+    changed_files = (
+        run(
+            "git",
+            "diff-tree",
+            "--diff-filter=M",
+            "-r",
+            "-z",
+            "--name-only",
+            old_tree,
+            new_tree,
+        )
+        .rstrip("\0")
+        .split("\0")
+    )
+    if not force:
+        unstaged_files = run("git", "diff-files", "--name-status", *changed_files)
+        if unstaged_files:
+            print(
+                "The following files would be modified but have unstaged changes:",
+                file=sys.stderr,
+            )
+            print(unstaged_files, file=sys.stderr)
+            print("Please commit, stage, or stash them first.", file=sys.stderr)
+            sys.exit(2)
+    if patch_mode:
+        # In patch mode, we could just as well create an index from the new tree
+        # and checkout from that, but then the user will be presented with a
+        # message saying "Discard ... from worktree".  Instead, we use the old
+        # tree as the index and checkout from new_tree, which gives the slightly
+        # better message, "Apply ... to index and worktree".  This is not quite
+        # right, since it won't be applied to the user's index, but oh well.
+        with temporary_index_file(old_tree):
+            subprocess.run(["git", "checkout", "--patch", new_tree], check=True)
+        index_tree = old_tree
+    else:
+        with temporary_index_file(new_tree):
+            run("git", "checkout-index", "-f", "--", *changed_files)
+    return changed_files
+
+
+def run(*args, **kwargs):
+    stdin = kwargs.pop("stdin", "")
+    verbose = kwargs.pop("verbose", True)
+    strip = kwargs.pop("strip", True)
+    for name in kwargs:
+        raise TypeError("run() got an unexpected keyword argument '%s'" % name)
+    p = subprocess.Popen(
+        args,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        stdin=subprocess.PIPE,
+    )
+    stdout, stderr = p.communicate(input=stdin)
+
+    stdout = convert_string(stdout)
+    stderr = convert_string(stderr)
+
+    if p.returncode == 0:
+        if stderr:
+            if verbose:
+                print("`%s` printed to stderr:" % " ".join(args), file=sys.stderr)
+            print(stderr.rstrip(), file=sys.stderr)
+        if strip:
+            stdout = stdout.rstrip("\r\n")
+        return stdout
+    if verbose:
+        print("`%s` returned %s" % (" ".join(args), p.returncode), file=sys.stderr)
+    if stderr:
+        print(stderr.rstrip(), file=sys.stderr)
+    sys.exit(2)
+
+
+def die(message):
+    print("error:", message, file=sys.stderr)
+    sys.exit(2)
+
+
+def to_bytes(str_input):
+    # Encode to UTF-8 to get binary data.
+    if isinstance(str_input, bytes):
+        return str_input
+    return str_input.encode("utf-8")
+
+
+def to_string(bytes_input):
+    if isinstance(bytes_input, str):
+        return bytes_input
+    return bytes_input.encode("utf-8")
+
+
+def convert_string(bytes_input):
+    try:
+        return to_string(bytes_input.decode("utf-8"))
+    except AttributeError:  # 'str' object has no attribute 'decode'.
+        return str(bytes_input)
+    except UnicodeError:
+        return str(bytes_input)
+
+
+if __name__ == "__main__":
+    sys.exit(main())

frontend/src/common/prettier/plugins/clang/index.ts

@@ -0,0 +1,155 @@
+/**
+ * Prettier Plugin for C/C++ formatting using clang-format WebAssembly
+ * 
+ * This plugin provides support for formatting C/C++ files using the clang-format WASM implementation.
+ * It supports various C/C++ file extensions and common clang-format styles.
+ */
+import type { Plugin, Parser, Printer } from 'prettier';
+
+// Import the clang-format WASM module
+import clangFormatInit, { format } from './clang-format-vite.js';
+
+const parserName = 'clang';
+
+// Language configuration
+const languages = [
+    {
+        name: 'C',
+        aliases: ['c'],
+        parsers: [parserName],
+        extensions: ['.c', '.h'],
+        aceMode: 'c_cpp',
+        tmScope: 'source.c',
+        linguistLanguageId: 50,
+        vscodeLanguageIds: ['c']
+    },
+    {
+        name: 'C++',
+        aliases: ['cpp', 'cxx', 'cc'],
+        parsers: [parserName],
+        extensions: ['.cpp', '.cxx', '.cc', '.hpp', '.hxx', '.hh', '.C', '.H'],
+        aceMode: 'c_cpp',
+        tmScope: 'source.cpp',
+        linguistLanguageId: 43,
+        vscodeLanguageIds: ['cpp']
+    },
+    {
+        name: 'Objective-C',
+        aliases: ['objc', 'objectivec'],
+        parsers: [parserName],
+        extensions: ['.m', '.mm'],
+        aceMode: 'objectivec',
+        tmScope: 'source.objc',
+        linguistLanguageId: 259,
+        vscodeLanguageIds: ['objective-c']
+    }
+];
+
+// Parser configuration
+const clangParser: Parser<string> = {
+    astFormat: parserName,
+    parse: (text: string) => text,
+    locStart: () => 0,
+    locEnd: (node: string) => node.length,
+};
+
+// Initialize clang-format WASM module
+let initPromise: Promise<void> | null = null;
+let isInitialized = false;
+
+function initClangFormat(): Promise<void> {
+    if (initPromise) {
+        return initPromise;
+    }
+    
+    initPromise = (async () => {
+        if (!isInitialized) {
+            await clangFormatInit();
+            isInitialized = true;
+        }
+    })();
+    
+    return initPromise;
+}
+
+// Printer configuration
+const clangPrinter: Printer<string> = {
+    print: (path, options) => {
+        try {
+            if (!isInitialized) {
+                console.warn('clang-format WASM module not initialized, returning original text');
+                return (path as any).getValue ? (path as any).getValue() : path.node;
+            }
+            
+            const text = (path as any).getValue ? (path as any).getValue() : path.node;
+            const style = getClangStyle(options);
+            
+            // Format using clang-format (synchronous call)
+            const formatted = format(text, undefined, style);
+            
+            return formatted.trim();
+        } catch (error) {
+            console.warn('clang-format failed:', error);
+            // Return original text if formatting fails
+            return (path as any).getValue ? (path as any).getValue() : path.node;
+        }
+    },
+};
+
+
+// Helper function to determine clang-format style
+function getClangStyle(options: any): string {
+    // You can extend this to support more options
+    const style = options.clangStyle || 'LLVM';
+    
+    // Support common styles
+    const validStyles = ['LLVM', 'Google', 'Chromium', 'Mozilla', 'WebKit', 'Microsoft', 'GNU'];
+    if (validStyles.includes(style)) {
+        return style;
+    }
+    
+    // Default to LLVM style
+    return 'LLVM';
+}
+
+// Plugin options
+const options = {
+    clangStyle: {
+        since: '0.0.1',
+        category: 'Format' as const,
+        type: 'choice' as const,
+        default: 'LLVM',
+        description: 'The clang-format style to use',
+        choices: [
+            { value: 'LLVM', description: 'LLVM coding standards' },
+            { value: 'Google', description: "Google's C++ style guide" },
+            { value: 'Chromium', description: "Chromium's style guide" },
+            { value: 'Mozilla', description: "Mozilla's style guide" },
+            { value: 'WebKit', description: "WebKit's style guide" },
+            { value: 'Microsoft', description: "Microsoft's style guide" },
+            { value: 'GNU', description: 'GNU coding standards' }
+        ]
+    }
+};
+
+// Plugin object
+const clangPlugin: Plugin = {
+    languages,
+    parsers: {
+        [parserName]: clangParser,
+    },
+    printers: {
+        [parserName]: clangPrinter,
+    },
+    options,
+};
+
+// Initialize WASM module when plugin loads
+initClangFormat().catch(error => {
+    console.warn('Failed to initialize clang-format WASM module:', error);
+});
+
+export default clangPlugin;
+export { languages };
+export const parsers = clangPlugin.parsers;
+export const printers = clangPlugin.printers;

frontend/src/common/prettier/plugins/clang/lib.cc

@@ -0,0 +1,323 @@
+//===-- clang-format/ClangFormat.cpp - Clang format tool ------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements a clang-format tool that automatically formats
+/// (fragments of) C++ code.
+///
+//===----------------------------------------------------------------------===//
+
+#include "lib.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/Version.h"
+#include "clang/Format/Format.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+
+using namespace llvm;
+using clang::tooling::Replacements;
+
+static std::string FallbackStyle{clang::format::DefaultFallbackStyle};
+
+static unsigned Cursor{0};
+
+static bool SortIncludes{false};
+
+static std::string QualifierAlignment{""};
+
+static auto Ok(const std::string content) -> Result {
+  return {false, std::move(content)};
+}
+
+static auto Err(const std::string content) -> Result {
+  return {true, std::move(content)};
+}
+
+namespace clang {
+namespace format {
+
+static FileID createInMemoryFile(StringRef FileName, MemoryBufferRef Source,
+                                 SourceManager &Sources, FileManager &Files,
+                                 llvm::vfs::InMemoryFileSystem *MemFS) {
+  MemFS->addFileNoOwn(FileName, 0, Source);
+  auto File = Files.getOptionalFileRef(FileName);
+  assert(File && "File not added to MemFS?");
+  return Sources.createFileID(*File, SourceLocation(), SrcMgr::C_User);
+}
+
+static auto fillRanges(MemoryBuffer *Code, std::vector<tooling::Range> &Ranges)
+    -> void {
+  Ranges.push_back(tooling::Range(0, Code->getBuffer().size()));
+}
+
+static auto isPredefinedStyle(StringRef style) -> bool {
+  return StringSwitch<bool>(style.lower())
+      .Cases("llvm", "chromium", "mozilla", "google", "webkit", "gnu",
+             "microsoft", "none", "file", true)
+      .Default(false);
+}
+
+static auto format_range(const std::unique_ptr<llvm::MemoryBuffer> code,
+                         const std::string assumedFileName,
+                         const std::string style,
+                         std::vector<tooling::Range> ranges) -> Result {
+  StringRef BufStr = code->getBuffer();
+
+  const char *InvalidBOM = SrcMgr::ContentCache::getInvalidBOM(BufStr);
+
+  if (InvalidBOM) {
+    std::stringstream err;
+    err << "encoding with unsupported byte order mark \"" << InvalidBOM
+        << "\" detected.";
+
+    return Err(err.str());
+  }
+
+  StringRef AssumedFileName = assumedFileName;
+  if (AssumedFileName.empty())
+    AssumedFileName = "<stdin>";
+
+  IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new llvm::vfs::InMemoryFileSystem);
+  FileManager Files(FileSystemOptions(), InMemoryFileSystem);
+
+  DiagnosticOptions DiagOpts;
+  DiagnosticsEngine Diagnostics(
+      IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), DiagOpts);
+  SourceManager Sources(Diagnostics, Files);
+
+  StringRef _style = style;
+
+  if (!_style.starts_with("{") && !isPredefinedStyle(_style)) {
+    std::unique_ptr<llvm::MemoryBuffer> DotClangFormat =
+        MemoryBuffer::getMemBuffer(style);
+
+    createInMemoryFile(".clang-format", *DotClangFormat.get(), Sources, Files,
+                       InMemoryFileSystem.get());
+    _style = "file:.clang-format";
+  }
+
+  llvm::Expected<FormatStyle> FormatStyle =
+      getStyle(_style, AssumedFileName, FallbackStyle, code->getBuffer(),
+               InMemoryFileSystem.get(), false);
+
+  InMemoryFileSystem.reset();
+
+  if (!FormatStyle) {
+    std::string err = llvm::toString(FormatStyle.takeError());
+    return Err(err);
+  }
+
+  StringRef QualifierAlignmentOrder = QualifierAlignment;
+
+  FormatStyle->QualifierAlignment =
+      StringSwitch<FormatStyle::QualifierAlignmentStyle>(
+          QualifierAlignmentOrder.lower())
+          .Case("right", FormatStyle::QAS_Right)
+          .Case("left", FormatStyle::QAS_Left)
+          .Default(FormatStyle->QualifierAlignment);
+
+  if (FormatStyle->QualifierAlignment == FormatStyle::QAS_Left) {
+    FormatStyle->QualifierOrder = {"const", "volatile", "type"};
+  } else if (FormatStyle->QualifierAlignment == FormatStyle::QAS_Right) {
+    FormatStyle->QualifierOrder = {"type", "const", "volatile"};
+  } else if (QualifierAlignmentOrder.contains("type")) {
+    FormatStyle->QualifierAlignment = FormatStyle::QAS_Custom;
+    SmallVector<StringRef> Qualifiers;
+    QualifierAlignmentOrder.split(Qualifiers, " ", /*MaxSplit=*/-1,
+                                  /*KeepEmpty=*/false);
+    FormatStyle->QualifierOrder = {Qualifiers.begin(), Qualifiers.end()};
+  }
+
+  if (SortIncludes) {
+    FormatStyle->SortIncludes = {};
+    FormatStyle->SortIncludes.Enabled = true;
+  }
+
+  unsigned CursorPosition = Cursor;
+  Replacements Replaces = sortIncludes(*FormatStyle, code->getBuffer(), ranges,
+                                       AssumedFileName, &CursorPosition);
+
+  // To format JSON insert a variable to trick the code into thinking its
+  // JavaScript.
+  if (FormatStyle->isJson() && !FormatStyle->DisableFormat) {
+    auto err =
+        Replaces.add(tooling::Replacement(AssumedFileName, 0, 0, "x = "));
+    if (err)
+      return Err("Bad Json variable insertion");
+  }
+
+  auto ChangedCode =
+      cantFail(tooling::applyAllReplacements(code->getBuffer(), Replaces));
+
+  // Get new affected ranges after sorting `#includes`.
+  ranges = tooling::calculateRangesAfterReplacements(Replaces, ranges);
+  FormattingAttemptStatus Status;
+  Replacements FormatChanges =
+      reformat(*FormatStyle, ChangedCode, ranges, AssumedFileName, &Status);
+  Replaces = Replaces.merge(FormatChanges);
+
+  return Ok(
+      cantFail(tooling::applyAllReplacements(code->getBuffer(), Replaces)));
+}
+
+static auto format_range(const std::string str,
+                         const std::string assumedFileName,
+                         const std::string style, const bool is_line_range,
+                         const std::vector<unsigned> ranges) -> Result {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
+      MemoryBuffer::getMemBuffer(str);
+
+  if (std::error_code EC = CodeOrErr.getError())
+    return Err(EC.message());
+  std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
+  if (Code->getBufferSize() == 0)
+    return Ok(""); // Empty files are formatted correctly.
+
+  std::vector<tooling::Range> Ranges;
+
+  if (ranges.empty()) {
+    fillRanges(Code.get(), Ranges);
+    return format_range(std::move(Code), assumedFileName, style,
+                        std::move(Ranges));
+  }
+
+  IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new llvm::vfs::InMemoryFileSystem);
+  FileManager Files(FileSystemOptions(), InMemoryFileSystem);
+  DiagnosticOptions DiagOpts;
+  DiagnosticsEngine Diagnostics(
+      IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), DiagOpts);
+  SourceManager Sources(Diagnostics, Files);
+  FileID ID = createInMemoryFile("<irrelevant>", *Code, Sources, Files,
+                                 InMemoryFileSystem.get());
+
+  if (is_line_range) {
+    for (auto FromLine = begin(ranges); FromLine < end(ranges); FromLine += 2) {
+      auto ToLine = FromLine + 1;
+
+      SourceLocation Start = Sources.translateLineCol(ID, *FromLine, 1);
+      SourceLocation End = Sources.translateLineCol(ID, *ToLine, UINT_MAX);
+      if (Start.isInvalid() || End.isInvalid())
+        return Err("invalid line number");
+      unsigned Offset = Sources.getFileOffset(Start);
+      unsigned Length = Sources.getFileOffset(End) - Offset;
+      Ranges.push_back(tooling::Range(Offset, Length));
+    }
+  } else {
+    if (ranges.size() > 2 && ranges.size() % 2 != 0)
+      return Err("number of -offset and -length arguments must match");
+
+    if (ranges.size() == 1) {
+      auto offset = begin(ranges);
+      if (*offset >= Code->getBufferSize()) {
+        std::stringstream err;
+        err << "offset " << *offset << " is outside the file";
+        return Err(err.str());
+      }
+      SourceLocation Start =
+          Sources.getLocForStartOfFile(ID).getLocWithOffset(*offset);
+      SourceLocation End = Sources.getLocForEndOfFile(ID);
+
+      unsigned Offset = Sources.getFileOffset(Start);
+      unsigned Length = Sources.getFileOffset(End) - Offset;
+
+      Ranges.push_back(tooling::Range(Offset, Length));
+    } else {
+      for (auto offset = begin(ranges); offset < end(ranges); offset += 2) {
+        auto length = offset + 1;
+
+        if (*offset >= Code->getBufferSize()) {
+          std::stringstream err;
+          err << "offset " << *offset << " is outside the file";
+          return Err(err.str());
+        }
+
+        unsigned end = *offset + *length;
+        if (end > Code->getBufferSize()) {
+          std::stringstream err;
+          err << "invalid length " << *length << ", offset + length (" << end
+              << ") is outside the file.";
+          return Err(err.str());
+        }
+
+        SourceLocation Start =
+            Sources.getLocForStartOfFile(ID).getLocWithOffset(*offset);
+        SourceLocation End = Start.getLocWithOffset(*length);
+
+        unsigned Offset = Sources.getFileOffset(Start);
+        unsigned Length = Sources.getFileOffset(End) - Offset;
+
+        Ranges.push_back(tooling::Range(Offset, Length));
+      }
+    }
+  }
+
+  return format_range(std::move(Code), assumedFileName, style,
+                      std::move(Ranges));
+}
+
+static auto format(const std::string str, const std::string assumedFileName,
+                   const std::string style) -> Result {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
+      MemoryBuffer::getMemBuffer(str);
+
+  if (std::error_code EC = CodeOrErr.getError())
+    return Err(EC.message());
+  std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
+  if (Code->getBufferSize() == 0)
+    return Ok(""); // Empty files are formatted correctly.
+
+  std::vector<tooling::Range> Ranges;
+  fillRanges(Code.get(), Ranges);
+
+  return format_range(std::move(Code), assumedFileName, style,
+                      std::move(Ranges));
+}
+
+} // namespace format
+} // namespace clang
+
+auto version() -> std::string {
+  return clang::getClangToolFullVersion("clang-format");
+}
+
+auto format(const std::string str, const std::string assumedFileName,
+            const std::string style) -> Result {
+  return clang::format::format(str, assumedFileName, style);
+}
+
+auto format_byte(const std::string str, const std::string assumedFileName,
+                 const std::string style, const std::vector<unsigned> ranges)
+    -> Result {
+  return clang::format::format_range(str, assumedFileName, style, false,
+                                     std::move(ranges));
+}
+
+auto format_line(const std::string str, const std::string assumedFileName,
+                 const std::string style, const std::vector<unsigned> ranges)
+    -> Result {
+  return clang::format::format_range(str, assumedFileName, style, true,
+                                     std::move(ranges));
+}
+
+auto set_fallback_style(const std::string style) -> void {
+  FallbackStyle = style;
+}
+
+auto set_sort_includes(const bool sort) -> void { SortIncludes = sort; }
+
+auto dump_config(const std::string style, const std::string FileName,
+                 const std::string code) -> Result {
+  llvm::Expected<clang::format::FormatStyle> FormatStyle =
+      clang::format::getStyle(style, FileName, FallbackStyle, code);
+  if (!FormatStyle)
+    return Err(llvm::toString(FormatStyle.takeError()));
+  std::string Config = clang::format::configurationAsText(*FormatStyle);
+  return Ok(Config);
+}

frontend/src/common/prettier/plugins/clang/lib.h

@@ -0,0 +1,24 @@
+#ifndef CLANG_FORMAT_WASM_LIB_H_
+#define CLANG_FORMAT_WASM_LIB_H_
+#include <sstream>
+
+struct Result {
+    bool error;
+    std::string content;
+};
+
+auto version() -> std::string;
+auto format(const std::string str, const std::string assumedFileName, const std::string style) -> Result;
+auto format_byte(const std::string str,
+                 const std::string assumedFileName,
+                 const std::string style,
+                 const std::vector<unsigned> ranges) -> Result;
+auto format_line(const std::string str,
+                 const std::string assumedFileName,
+                 const std::string style,
+                 const std::vector<unsigned> ranges) -> Result;
+auto set_fallback_style(const std::string style) -> void;
+auto set_sort_includes(const bool sort) -> void;
+auto dump_config(const std::string style, const std::string FileName, const std::string code) -> Result;
+
+#endif

frontend/src/common/prettier/plugins/clang/template.js

@@ -0,0 +1,146 @@
+/* @ts-self-types="./clang-format.d.ts" */
+async function load(module) {
+    if (typeof Response === "function" && module instanceof Response) {
+        if ("compileStreaming" in WebAssembly) {
+            try {
+                return await WebAssembly.compileStreaming(module);
+            } catch (e) {
+                if (module.headers.get("Content-Type") !== "application/wasm") {
+                    console.warn(
+                        "`WebAssembly.compileStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n",
+                        e,
+                    );
+                } else {
+                    throw e;
+                }
+            }
+        }
+
+        return module.arrayBuffer();
+    }
+
+    return module;
+}
+
+let wasm;
+export default async function initAsync(input) {
+    if (wasm !== undefined) {
+        return wasm;
+    }
+
+    if (typeof input === "undefined") {
+        input = new URL("clang-format.wasm", import.meta.url);
+    }
+
+    if (
+        typeof input === "string" ||
+        (typeof Request === "function" && input instanceof Request) ||
+        (typeof URL === "function" && input instanceof URL)
+    ) {
+        input = fetch(input);
+    }
+
+    wasm = await load(await input).then((wasm) => Module({ wasm }));
+    assert_init = () => {};
+}
+
+function assert_init() {
+    throw new Error("uninit");
+}
+
+export function version() {
+    assert_init();
+    return wasm.version();
+}
+
+export function set_fallback_style(style) {
+    assert_init();
+    wasm.set_fallback_style(style);
+}
+
+export function set_sort_includes(sort) {
+    assert_init();
+    wasm.set_sort_includes(sort);
+}
+
+function unwrap(result) {
+    const { error, content } = result;
+    if (error) {
+        throw Error(content);
+    }
+    return content;
+}
+
+export function format(content, filename = "<stdin>", style = "LLVM") {
+    assert_init();
+    const result = wasm.format(content, filename, style);
+    return unwrap(result);
+}
+
+export function format_line_range(
+    content,
+    range,
+    filename = "<stdin>",
+    style = "LLVM",
+) {
+    assert_init();
+    const rangeList = new wasm.RangeList();
+    for (const [fromLine, toLine] of range) {
+        if (fromLine < 1) {
+            throw Error("start line should be at least 1");
+        }
+        if (fromLine > toLine) {
+            throw Error("start line should not exceed end line");
+        }
+        rangeList.push_back(fromLine);
+        rangeList.push_back(toLine);
+    }
+
+    const result = wasm.format_line(content, filename, style, rangeList);
+    rangeList.delete();
+    return unwrap(result);
+}
+
+export function format_byte_range(
+    content,
+    range,
+    filename = "<stdin>",
+    style = "LLVM",
+) {
+    assert_init();
+    const rangeList = new wasm.RangeList();
+
+    if (range.length === 1 && range[0].length === 1) {
+        rangeList.push_back(range[0][0]);
+    } else {
+        for (const [offset, length] of range) {
+            if (offset < 0) {
+                throw Error("start offset should be at least 0");
+            }
+            if (length < 0) {
+                throw Error("length should be at least 0");
+            }
+            rangeList.push_back(offset);
+            rangeList.push_back(length);
+        }
+    }
+
+    const result = wasm.format_byte(content, filename, style, rangeList);
+    rangeList.delete();
+    return unwrap(result);
+}
+
+export function dump_config({
+    style = "file",
+    filename = "<stdin>",
+    code = "",
+} = {}) {
+    assert_init();
+    const result = wasm.dump_config(style, filename, code);
+    return unwrap(result);
+}
+
+export {
+    format_byte_range as formatByteRange,
+    format_line_range as formatLineRange,
+};

frontend/src/common/prettier/plugins/go/build-tinygo.bat

@@ -0,0 +1,42 @@
+@echo off
+rem Build script for Go Prettier Plugin WASM using TinyGo
+rem This script compiles the Go code to WebAssembly for browser environment
+
+echo Building Go Prettier Plugin WASM with TinyGo...
+
+rem Check if TinyGo is available
+tinygo version >nul 2>&1
+if errorlevel 1 (
+    echo TinyGo not found! Please install TinyGo first.
+    echo Visit: https://tinygo.org/getting-started/install/
+    pause
+    exit /b 1
+)
+
+rem Display TinyGo version
+echo Using TinyGo version:
+tinygo version
+
+rem Build the WASM file using TinyGo
+echo Compiling main.go to go.wasm with TinyGo...
+tinygo build -o go-format.wasm -target wasm main.go
+if errorlevel 1 (
+    echo Build failed!
+    pause
+    exit /b 1
+)
+
+echo Build successful!
+
+rem Show file size (Windows version)
+for %%A in (go.wasm) do echo WASM file size: %%~zA bytes
+
+rem Copy to public directory for browser access
+if exist "..\..\..\..\..\public" (
+    copy go.wasm ..\..\..\..\..\public\go.wasm > nul
+    echo Copied to public directory
+    del go.wasm
+    echo Cleaned up local WASM file
+)
+
+echo Go Prettier Plugin WASM (TinyGo) is ready!

frontend/src/common/prettier/plugins/go/build-tinygo.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# Build script for Go Prettier Plugin WASM using TinyGo
+# This script compiles the Go code to WebAssembly for browser environment
+
+echo "Building Go Prettier Plugin WASM with TinyGo..."
+
+# Check if TinyGo is available
+if ! command -v tinygo &> /dev/null; then
+    echo "TinyGo not found! Please install TinyGo first."
+    echo "Visit: https://tinygo.org/getting-started/install/"
+    exit 1
+fi
+
+# Display TinyGo version
+echo "Using TinyGo version: $(tinygo version)"
+
+# Build the WASM file using TinyGo
+echo "Compiling main.go to go.wasm with TinyGo..."
+tinygo build -o go-format.wasm -target wasm main.go
+
+if [ $? -ne 0 ]; then
+    echo "Build failed!"
+    exit 1
+fi
+
+echo "Build successful!"
+echo "WASM file size: $(du -h go-format.wasm | cut -f1)"
+
+# Copy to public directory for browser access
+if [ -d "../../../../../public" ]; then
+    cp go-format.wasm ../../../../../public/go-format.wasm
+    echo "Copied to public directory"
+    rm go-format.wasm
+    echo "Cleaned up local WASM file"
+fi
+
+echo "Go Prettier Plugin WASM (TinyGo) is ready!"

frontend/src/common/prettier/plugins/go/build.bat

@@ -0,0 +1,43 @@
+@echo off
+rem Build script for Go Prettier Plugin WASM using native Go
+rem This script compiles the Go code to WebAssembly for browser environment
+
+echo Building Go Prettier Plugin WASM with native Go...
+
+rem Check if Go is available
+go version >nul 2>&1
+if %ERRORLEVEL% NEQ 0 (
+    echo Go not found! Please install Go 1.21+ first.
+    echo Visit: https://golang.org/dl/
+    pause
+    exit /b 1
+)
+
+rem Set WASM build environment for browser (js/wasm)
+set GOOS=js
+set GOARCH=wasm
+
+rem Build the WASM file using native Go
+echo Compiling main.go to go.wasm with Go...
+go build -o go-format.wasm main.go
+
+if %ERRORLEVEL% EQU 0 (
+    echo Build successful!
+    
+    rem Show file size (Windows version)
+    for %%A in (go.wasm) do echo WASM file size: %%~zA bytes
+    
+    rem Copy to public directory for browser access
+    if exist "..\..\..\..\..\public" (
+        copy go.wasm ..\..\..\..\..\public\go.wasm > nul
+        echo Copied to public directory
+        del go.wasm
+        echo Cleaned up local WASM file
+    )
+    
+    echo Go Prettier Plugin WASM is ready!
+) else (
+    echo Build failed!
+    pause
+    exit /b 1
+)

frontend/src/common/prettier/plugins/go/build.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Build script for Go Prettier Plugin WASM using native Go
+# This script compiles the Go code to WebAssembly for browser environment
+
+echo "Building Go Prettier Plugin WASM with native Go..."
+
+# Check if Go is available
+if ! command -v go &> /dev/null; then
+    echo "Go not found! Please install Go 1.21+ first."
+    echo "Visit: https://golang.org/dl/"
+    exit 1
+fi
+
+# Display Go version
+echo "Using Go version: $(go version)"
+
+# Set WASM build environment for browser (js/wasm)
+export GOOS=js
+export GOARCH=wasm
+
+# Build the WASM file using native Go
+echo "Compiling main.go to go.wasm with Go..."
+go build -o go-format.wasm main.go
+
+if [ $? -eq 0 ]; then
+    echo "Build successful!"
+    echo "WASM file size: $(du -h go-format.wasm | cut -f1)"
+    
+    # Copy to public directory for browser access
+    if [ -d "../../../../../public" ]; then
+        cp go-format.wasm ../../../../../public/go-format.wasm
+        echo "Copied to public directory"
+        rm go-format.wasm
+        echo "Cleaned up local WASM file"
+    fi
+    
+    echo "Go Prettier Plugin WASM is ready!"
+else
+    echo "Build failed!"
+    exit 1
+fi

frontend/src/common/prettier/plugins/go/go.d.ts

@@ -0,0 +1,10 @@
+import { Parser, Plugin } from "prettier";
+
+export declare const languages: Plugin["languages"];
+export declare const parsers: {
+  go: Parser;
+};
+export declare const printers: Plugin["printers"];
+
+declare const plugin: Plugin;
+export default plugin;

frontend/src/common/prettier/plugins/go/go.mjs

@@ -0,0 +1,142 @@
+/**
+ * @fileoverview Go Prettier Format Plugin
+ * A Prettier plugin for formatting Go code using WebAssembly.
+ * This plugin leverages Go's native formatting capabilities through WASM.
+ */
+import "./wasm_exec.js"
+/** @type {Promise<void>|null} */
+let initializePromise;
+
+/**
+ * Initializes the Go WebAssembly module for formatting Go code.
+ * This function sets up the WASM runtime and makes the formatGo function
+ * available on the global object.
+ * 
+ * @async
+ * @function initialize
+ * @returns {Promise<void>} A promise that resolves when the WASM module is ready
+ * @throws {Error} If the WASM file cannot be loaded or instantiated
+ */
+function initialize() {
+  if (initializePromise) {
+    return initializePromise;
+  }
+
+  initializePromise = (async () => {
+
+    const go = new TinyGo();
+
+    // Load WASM file from browser
+    const response = await fetch('/go-format.wasm');
+    if (!response.ok) {
+      throw new Error(`Failed to load WASM file: ${response.status} ${response.statusText}`);
+    }
+    const wasmBuffer = await response.arrayBuffer();
+
+    const { instance } = await WebAssembly.instantiate(
+      wasmBuffer,
+      go.importObject
+    );
+
+    // go.run returns a promise that resolves when the go program exits.
+    // Since our program is a long-running service (it exposes a function and waits),
+    // we don't await it.
+    go.run(instance);
+
+    // The `formatGo` function is now available on the global object.
+  })();
+
+  return initializePromise;
+}
+
+/**
+ * Prettier language configuration for Go.
+ * Defines the language settings, file extensions, and parser mappings.
+ * 
+ * @type {Array<Object>}
+ * @property {string} name - The display name of the language
+ * @property {string[]} parsers - Array of parser names for this language
+ * @property {string[]} extensions - File extensions associated with this language
+ * @property {string[]} vscodeLanguageIds - VSCode language identifier mappings
+ */
+const languages = [
+  {
+    name: "Go",
+    parsers: ["go-format"],
+    extensions: [".go"],
+    vscodeLanguageIds: ["go"],
+  },
+];
+
+/**
+ * Prettier parser configuration for Go.
+ * Defines how Go source code should be parsed and processed.
+ * 
+ * @type {Object<string, Object>}
+ * @property {Object} go-format - Go language parser configuration
+ * @property {Function} go-format.parse - Parser function that returns the input text as-is
+ * @property {string} go-format.astFormat - AST format identifier for the printer
+ * @property {Function} go-format.locStart - Function to get the start location of a node
+ * @property {Function} go-format.locEnd - Function to get the end location of a node
+ */
+const parsers = {
+  "go-format": {
+    /**
+     * Parse Go source code. For this plugin, we pass through the text as-is
+     * since the actual formatting is handled by the Go WASM module.
+     * 
+     * @param {string} text - The Go source code to parse
+     * @returns {string} The input text unchanged
+     */
+    parse: (text) => text,
+    astFormat: "go-format",
+    // These are required for Prettier to work
+    /**
+     * Get the start location of a node in the source code.
+     * 
+     * @param {string} node - The node (in this case, the source text)
+     * @returns {number} Always returns 0 as we treat the entire text as one node
+     */
+    locStart: (node) => 0,
+    /**
+     * Get the end location of a node in the source code.
+     * 
+     * @param {string} node - The node (in this case, the source text)
+     * @returns {number} The length of the text
+     */
+    locEnd: (node) => node.length,
+  },
+};
+
+/**
+ * Prettier printer configuration for Go.
+ * Defines how the parsed Go AST should be formatted back to text.
+ * 
+ * @type {Object<string, Object>}
+ * @property {Object} go-format - Go formatting printer configuration
+ * @property {Function} go-format.print - Async function that formats Go code
+ */
+const printers = {
+  "go-format": {
+    /**
+     * Format Go source code using the WebAssembly Go formatter.
+     * This function initializes the WASM module if needed and calls the
+     * global formatGo function exposed by the Go program.
+     * 
+     * @async
+     * @param {Object} path - Prettier's path object containing the source code
+     * @param {Function} path.getValue - Function to get the current node value
+     * @returns {Promise<string>} The formatted Go source code
+     * @throws {Error} If the WASM module fails to initialize or format the code
+     */
+    print: async (path) => {
+      // The WASM module must be initialized before we can format.
+      await initialize();
+      const text = path.getValue();
+      // The `formatGo` function is exposed on the global object by our Go program.
+      return globalThis.formatGo(text);
+    },
+  },
+};
+
+export default { languages, parsers, printers, initialize };

frontend/src/common/prettier/plugins/go/main.go

@@ -0,0 +1,66 @@
+//go:build js && wasm
+
+// Package main implements a WebAssembly module that provides Go code formatting
+// functionality for the Prettier plugin. This package exposes the formatGo function
+// to JavaScript, enabling web-based Go code formatting using Go's built-in format package.
+//
+// The module is designed to be compiled to WebAssembly using native Go (GOOS=js GOARCH=wasm)
+// and loaded in browser environments as part of the Go Prettier plugin.
+package main
+
+import (
+	"go/format"
+	"syscall/js"
+)
+
+// formatGo is a JavaScript-callable function that formats Go source code.
+// It wraps the standard library's go/format.Source function to be accessible
+// from JavaScript environments through WebAssembly.
+//
+// Parameters:
+//   - this: The JavaScript 'this' context (unused)
+//   - i: JavaScript arguments array where i[0] should contain the Go source code as a string
+//
+// Returns:
+//   - js.Value: The formatted Go source code as a JavaScript string value
+//   - If formatting fails due to syntax errors, returns the original code unchanged
+//   - If no arguments are provided, returns js.Null() and logs an error
+//
+// The function handles syntax errors gracefully by returning the original code
+// and logging error details to the JavaScript console for debugging purposes.
+func formatGo(this js.Value, i []js.Value) interface{} {
+	if len(i) == 0 {
+		js.Global().Get("console").Call("error", "formatGo: missing code argument")
+		return js.Null()
+	}
+	code := i[0].String()
+	formatted, err := format.Source([]byte(code))
+	if err != nil {
+		// In case of a syntax error in the Go code, go/format returns an error.
+		// Prettier expects the original text to be returned in case of an error.
+		// We also log the error to the console for debugging purposes.
+		js.Global().Get("console").Call("error", "Error formatting Go code:", err.Error())
+		return js.ValueOf(code)
+	}
+	return js.ValueOf(string(formatted))
+}
+
+// main initializes the WebAssembly module and exposes the formatGo function
+// to the JavaScript global scope. The function sets up a blocking channel
+// to prevent the WASM module from exiting, allowing it to serve as a
+// long-running service for formatting operations.
+//
+// The exposed formatGo function can be called from JavaScript as:
+//
+//	global.formatGo(sourceCode)
+func main() {
+	// Create a channel to keep the Go program running.
+	// This is necessary because the WASM module would exit otherwise.
+	c := make(chan struct{}, 0)
+
+	// Expose the formatGo function to the JavaScript global scope.
+	js.Global().Set("formatGo", js.FuncOf(formatGo))
+
+	// Block forever
+	<-c
+}

frontend/src/common/prettier/plugins/go/wasm_exec.js

@@ -0,0 +1,553 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// This file has been modified for use by the TinyGo compiler.
+
+(() => {
+	// Map multiple JavaScript environments to a single common API,
+	// preferring web standards over Node.js API.
+	//
+	// Environments considered:
+	// - Browsers
+	// - Node.js
+	// - Electron
+	// - Parcel
+
+	if (typeof global !== "undefined") {
+		// global already exists
+	} else if (typeof window !== "undefined") {
+		window.global = window;
+	} else if (typeof self !== "undefined") {
+		self.global = self;
+	} else {
+		throw new Error("cannot export Go (neither global, window nor self is defined)");
+	}
+
+	if (!global.require && typeof require !== "undefined") {
+		global.require = require;
+	}
+
+	if (!global.fs && global.require) {
+		global.fs = require("node:fs");
+	}
+
+	const enosys = () => {
+		const err = new Error("not implemented");
+		err.code = "ENOSYS";
+		return err;
+	};
+
+	if (!global.fs) {
+		let outputBuf = "";
+		global.fs = {
+			constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
+			writeSync(fd, buf) {
+				outputBuf += decoder.decode(buf);
+				const nl = outputBuf.lastIndexOf("\n");
+				if (nl != -1) {
+					console.log(outputBuf.substr(0, nl));
+					outputBuf = outputBuf.substr(nl + 1);
+				}
+				return buf.length;
+			},
+			write(fd, buf, offset, length, position, callback) {
+				if (offset !== 0 || length !== buf.length || position !== null) {
+					callback(enosys());
+					return;
+				}
+				const n = this.writeSync(fd, buf);
+				callback(null, n);
+			},
+			chmod(path, mode, callback) { callback(enosys()); },
+			chown(path, uid, gid, callback) { callback(enosys()); },
+			close(fd, callback) { callback(enosys()); },
+			fchmod(fd, mode, callback) { callback(enosys()); },
+			fchown(fd, uid, gid, callback) { callback(enosys()); },
+			fstat(fd, callback) { callback(enosys()); },
+			fsync(fd, callback) { callback(null); },
+			ftruncate(fd, length, callback) { callback(enosys()); },
+			lchown(path, uid, gid, callback) { callback(enosys()); },
+			link(path, link, callback) { callback(enosys()); },
+			lstat(path, callback) { callback(enosys()); },
+			mkdir(path, perm, callback) { callback(enosys()); },
+			open(path, flags, mode, callback) { callback(enosys()); },
+			read(fd, buffer, offset, length, position, callback) { callback(enosys()); },
+			readdir(path, callback) { callback(enosys()); },
+			readlink(path, callback) { callback(enosys()); },
+			rename(from, to, callback) { callback(enosys()); },
+			rmdir(path, callback) { callback(enosys()); },
+			stat(path, callback) { callback(enosys()); },
+			symlink(path, link, callback) { callback(enosys()); },
+			truncate(path, length, callback) { callback(enosys()); },
+			unlink(path, callback) { callback(enosys()); },
+			utimes(path, atime, mtime, callback) { callback(enosys()); },
+		};
+	}
+
+	if (!global.process) {
+		global.process = {
+			getuid() { return -1; },
+			getgid() { return -1; },
+			geteuid() { return -1; },
+			getegid() { return -1; },
+			getgroups() { throw enosys(); },
+			pid: -1,
+			ppid: -1,
+			umask() { throw enosys(); },
+			cwd() { throw enosys(); },
+			chdir() { throw enosys(); },
+		}
+	}
+
+	if (!global.crypto) {
+		const nodeCrypto = require("node:crypto");
+		global.crypto = {
+			getRandomValues(b) {
+				nodeCrypto.randomFillSync(b);
+			},
+		};
+	}
+
+	if (!global.performance) {
+		global.performance = {
+			now() {
+				const [sec, nsec] = process.hrtime();
+				return sec * 1000 + nsec / 1000000;
+			},
+		};
+	}
+
+	if (!global.TextEncoder) {
+		global.TextEncoder = require("node:util").TextEncoder;
+	}
+
+	if (!global.TextDecoder) {
+		global.TextDecoder = require("node:util").TextDecoder;
+	}
+
+	// End of polyfills for common API.
+
+	const encoder = new TextEncoder("utf-8");
+	const decoder = new TextDecoder("utf-8");
+	let reinterpretBuf = new DataView(new ArrayBuffer(8));
+	var logLine = [];
+	const wasmExit = {}; // thrown to exit via proc_exit (not an error)
+
+	global.TinyGo = class {
+		constructor() {
+			this._callbackTimeouts = new Map();
+			this._nextCallbackTimeoutID = 1;
+
+			const mem = () => {
+				// The buffer may change when requesting more memory.
+				return new DataView(this._inst.exports.memory.buffer);
+			}
+
+			const unboxValue = (v_ref) => {
+				reinterpretBuf.setBigInt64(0, v_ref, true);
+				const f = reinterpretBuf.getFloat64(0, true);
+				if (f === 0) {
+					return undefined;
+				}
+				if (!isNaN(f)) {
+					return f;
+				}
+
+				const id = v_ref & 0xffffffffn;
+				return this._values[id];
+			}
+
+
+			const loadValue = (addr) => {
+				let v_ref = mem().getBigUint64(addr, true);
+				return unboxValue(v_ref);
+			}
+
+			const boxValue = (v) => {
+				const nanHead = 0x7FF80000n;
+
+				if (typeof v === "number") {
+					if (isNaN(v)) {
+						return nanHead << 32n;
+					}
+					if (v === 0) {
+						return (nanHead << 32n) | 1n;
+					}
+					reinterpretBuf.setFloat64(0, v, true);
+					return reinterpretBuf.getBigInt64(0, true);
+				}
+
+				switch (v) {
+					case undefined:
+						return 0n;
+					case null:
+						return (nanHead << 32n) | 2n;
+					case true:
+						return (nanHead << 32n) | 3n;
+					case false:
+						return (nanHead << 32n) | 4n;
+				}
+
+				let id = this._ids.get(v);
+				if (id === undefined) {
+					id = this._idPool.pop();
+					if (id === undefined) {
+						id = BigInt(this._values.length);
+					}
+					this._values[id] = v;
+					this._goRefCounts[id] = 0;
+					this._ids.set(v, id);
+				}
+				this._goRefCounts[id]++;
+				let typeFlag = 1n;
+				switch (typeof v) {
+					case "string":
+						typeFlag = 2n;
+						break;
+					case "symbol":
+						typeFlag = 3n;
+						break;
+					case "function":
+						typeFlag = 4n;
+						break;
+				}
+				return id | ((nanHead | typeFlag) << 32n);
+			}
+
+			const storeValue = (addr, v) => {
+				let v_ref = boxValue(v);
+				mem().setBigUint64(addr, v_ref, true);
+			}
+
+			const loadSlice = (array, len, cap) => {
+				return new Uint8Array(this._inst.exports.memory.buffer, array, len);
+			}
+
+			const loadSliceOfValues = (array, len, cap) => {
+				const a = new Array(len);
+				for (let i = 0; i < len; i++) {
+					a[i] = loadValue(array + i * 8);
+				}
+				return a;
+			}
+
+			const loadString = (ptr, len) => {
+				return decoder.decode(new DataView(this._inst.exports.memory.buffer, ptr, len));
+			}
+
+			const timeOrigin = Date.now() - performance.now();
+			this.importObject = {
+				wasi_snapshot_preview1: {
+					// https://github.com/WebAssembly/WASI/blob/main/phases/snapshot/docs.md#fd_write
+					fd_write: function(fd, iovs_ptr, iovs_len, nwritten_ptr) {
+						let nwritten = 0;
+						if (fd == 1) {
+							for (let iovs_i=0; iovs_i<iovs_len;iovs_i++) {
+								let iov_ptr = iovs_ptr+iovs_i*8; // assuming wasm32
+								let ptr = mem().getUint32(iov_ptr + 0, true);
+								let len = mem().getUint32(iov_ptr + 4, true);
+								nwritten += len;
+								for (let i=0; i<len; i++) {
+									let c = mem().getUint8(ptr+i);
+									if (c == 13) { // CR
+										// ignore
+									} else if (c == 10) { // LF
+										// write line
+										let line = decoder.decode(new Uint8Array(logLine));
+										logLine = [];
+										console.log(line);
+									} else {
+										logLine.push(c);
+									}
+								}
+							}
+						} else {
+							console.error('invalid file descriptor:', fd);
+						}
+						mem().setUint32(nwritten_ptr, nwritten, true);
+						return 0;
+					},
+					fd_close: () => 0,      // dummy
+					fd_fdstat_get: () => 0, // dummy
+					fd_seek: () => 0,       // dummy
+					proc_exit: (code) => {
+						this.exited = true;
+						this.exitCode = code;
+						this._resolveExitPromise();
+						throw wasmExit;
+					},
+					random_get: (bufPtr, bufLen) => {
+						crypto.getRandomValues(loadSlice(bufPtr, bufLen));
+						return 0;
+					},
+				},
+				gojs: {
+					// func ticks() int64
+					"runtime.ticks": () => {
+						return BigInt((timeOrigin + performance.now()) * 1e6);
+					},
+
+					// func sleepTicks(timeout int64)
+					"runtime.sleepTicks": (timeout) => {
+						// Do not sleep, only reactivate scheduler after the given timeout.
+						setTimeout(() => {
+							if (this.exited) return;
+							try {
+								this._inst.exports.go_scheduler();
+							} catch (e) {
+								if (e !== wasmExit) throw e;
+							}
+						}, Number(timeout)/1e6);
+					},
+
+					// func finalizeRef(v ref)
+					"syscall/js.finalizeRef": (v_ref) => {
+						// Note: TinyGo does not support finalizers so this is only called
+						// for one specific case, by js.go:jsString. and can/might leak memory.
+						const id = v_ref & 0xffffffffn;
+						if (this._goRefCounts?.[id] !== undefined) {
+							this._goRefCounts[id]--;
+							if (this._goRefCounts[id] === 0) {
+								const v = this._values[id];
+								this._values[id] = null;
+								this._ids.delete(v);
+								this._idPool.push(id);
+							}
+						} else {
+							console.error("syscall/js.finalizeRef: unknown id", id);
+						}
+					},
+
+					// func stringVal(value string) ref
+					"syscall/js.stringVal": (value_ptr, value_len) => {
+						value_ptr >>>= 0;
+						const s = loadString(value_ptr, value_len);
+						return boxValue(s);
+					},
+
+					// func valueGet(v ref, p string) ref
+					"syscall/js.valueGet": (v_ref, p_ptr, p_len) => {
+						let prop = loadString(p_ptr, p_len);
+						let v = unboxValue(v_ref);
+						let result = Reflect.get(v, prop);
+						return boxValue(result);
+					},
+
+					// func valueSet(v ref, p string, x ref)
+					"syscall/js.valueSet": (v_ref, p_ptr, p_len, x_ref) => {
+						const v = unboxValue(v_ref);
+						const p = loadString(p_ptr, p_len);
+						const x = unboxValue(x_ref);
+						Reflect.set(v, p, x);
+					},
+
+					// func valueDelete(v ref, p string)
+					"syscall/js.valueDelete": (v_ref, p_ptr, p_len) => {
+						const v = unboxValue(v_ref);
+						const p = loadString(p_ptr, p_len);
+						Reflect.deleteProperty(v, p);
+					},
+
+					// func valueIndex(v ref, i int) ref
+					"syscall/js.valueIndex": (v_ref, i) => {
+						return boxValue(Reflect.get(unboxValue(v_ref), i));
+					},
+
+					// valueSetIndex(v ref, i int, x ref)
+					"syscall/js.valueSetIndex": (v_ref, i, x_ref) => {
+						Reflect.set(unboxValue(v_ref), i, unboxValue(x_ref));
+					},
+
+					// func valueCall(v ref, m string, args []ref) (ref, bool)
+					"syscall/js.valueCall": (ret_addr, v_ref, m_ptr, m_len, args_ptr, args_len, args_cap) => {
+						const v = unboxValue(v_ref);
+						const name = loadString(m_ptr, m_len);
+						const args = loadSliceOfValues(args_ptr, args_len, args_cap);
+						try {
+							const m = Reflect.get(v, name);
+							storeValue(ret_addr, Reflect.apply(m, v, args));
+							mem().setUint8(ret_addr + 8, 1);
+						} catch (err) {
+							storeValue(ret_addr, err);
+							mem().setUint8(ret_addr + 8, 0);
+						}
+					},
+
+					// func valueInvoke(v ref, args []ref) (ref, bool)
+					"syscall/js.valueInvoke": (ret_addr, v_ref, args_ptr, args_len, args_cap) => {
+						try {
+							const v = unboxValue(v_ref);
+							const args = loadSliceOfValues(args_ptr, args_len, args_cap);
+							storeValue(ret_addr, Reflect.apply(v, undefined, args));
+							mem().setUint8(ret_addr + 8, 1);
+						} catch (err) {
+							storeValue(ret_addr, err);
+							mem().setUint8(ret_addr + 8, 0);
+						}
+					},
+
+					// func valueNew(v ref, args []ref) (ref, bool)
+					"syscall/js.valueNew": (ret_addr, v_ref, args_ptr, args_len, args_cap) => {
+						const v = unboxValue(v_ref);
+						const args = loadSliceOfValues(args_ptr, args_len, args_cap);
+						try {
+							storeValue(ret_addr, Reflect.construct(v, args));
+							mem().setUint8(ret_addr + 8, 1);
+						} catch (err) {
+							storeValue(ret_addr, err);
+							mem().setUint8(ret_addr+ 8, 0);
+						}
+					},
+
+					// func valueLength(v ref) int
+					"syscall/js.valueLength": (v_ref) => {
+						return unboxValue(v_ref).length;
+					},
+
+					// valuePrepareString(v ref) (ref, int)
+					"syscall/js.valuePrepareString": (ret_addr, v_ref) => {
+						const s = String(unboxValue(v_ref));
+						const str = encoder.encode(s);
+						storeValue(ret_addr, str);
+						mem().setInt32(ret_addr + 8, str.length, true);
+					},
+
+					// valueLoadString(v ref, b []byte)
+					"syscall/js.valueLoadString": (v_ref, slice_ptr, slice_len, slice_cap) => {
+						const str = unboxValue(v_ref);
+						loadSlice(slice_ptr, slice_len, slice_cap).set(str);
+					},
+
+					// func valueInstanceOf(v ref, t ref) bool
+					"syscall/js.valueInstanceOf": (v_ref, t_ref) => {
+ 						return unboxValue(v_ref) instanceof unboxValue(t_ref);
+					},
+
+					// func copyBytesToGo(dst []byte, src ref) (int, bool)
+					"syscall/js.copyBytesToGo": (ret_addr, dest_addr, dest_len, dest_cap, src_ref) => {
+						let num_bytes_copied_addr = ret_addr;
+						let returned_status_addr = ret_addr + 4; // Address of returned boolean status variable
+
+						const dst = loadSlice(dest_addr, dest_len);
+						const src = unboxValue(src_ref);
+						if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) {
+							mem().setUint8(returned_status_addr, 0); // Return "not ok" status
+							return;
+						}
+						const toCopy = src.subarray(0, dst.length);
+						dst.set(toCopy);
+						mem().setUint32(num_bytes_copied_addr, toCopy.length, true);
+						mem().setUint8(returned_status_addr, 1); // Return "ok" status
+					},
+
+					// copyBytesToJS(dst ref, src []byte) (int, bool)
+					// Originally copied from upstream Go project, then modified:
+					//   https://github.com/golang/go/blob/3f995c3f3b43033013013e6c7ccc93a9b1411ca9/misc/wasm/wasm_exec.js#L404-L416
+					"syscall/js.copyBytesToJS": (ret_addr, dst_ref, src_addr, src_len, src_cap) => {
+						let num_bytes_copied_addr = ret_addr;
+						let returned_status_addr = ret_addr + 4; // Address of returned boolean status variable
+
+						const dst = unboxValue(dst_ref);
+						const src = loadSlice(src_addr, src_len);
+						if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) {
+							mem().setUint8(returned_status_addr, 0); // Return "not ok" status
+							return;
+						}
+						const toCopy = src.subarray(0, dst.length);
+						dst.set(toCopy);
+						mem().setUint32(num_bytes_copied_addr, toCopy.length, true);
+						mem().setUint8(returned_status_addr, 1); // Return "ok" status
+					},
+				}
+			};
+
+			// Go 1.20 uses 'env'. Go 1.21 uses 'gojs'.
+			// For compatibility, we use both as long as Go 1.20 is supported.
+			this.importObject.env = this.importObject.gojs;
+		}
+
+		async run(instance) {
+			this._inst = instance;
+			this._values = [ // JS values that Go currently has references to, indexed by reference id
+				NaN,
+				0,
+				null,
+				true,
+				false,
+				global,
+				this,
+			];
+			this._goRefCounts = []; // number of references that Go has to a JS value, indexed by reference id
+			this._ids = new Map();  // mapping from JS values to reference ids
+			this._idPool = [];      // unused ids that have been garbage collected
+			this.exited = false;    // whether the Go program has exited
+			this.exitCode = 0;
+
+			if (this._inst.exports._start) {
+				let exitPromise = new Promise((resolve, reject) => {
+					this._resolveExitPromise = resolve;
+				});
+
+				// Run program, but catch the wasmExit exception that's thrown
+				// to return back here.
+				try {
+					this._inst.exports._start();
+				} catch (e) {
+					if (e !== wasmExit) throw e;
+				}
+
+				await exitPromise;
+				return this.exitCode;
+			} else {
+				this._inst.exports._initialize();
+			}
+		}
+
+		_resume() {
+			if (this.exited) {
+				throw new Error("Go program has already exited");
+			}
+			try {
+				this._inst.exports.resume();
+			} catch (e) {
+				if (e !== wasmExit) throw e;
+			}
+			if (this.exited) {
+				this._resolveExitPromise();
+			}
+		}
+
+		_makeFuncWrapper(id) {
+			const go = this;
+			return function () {
+				const event = { id: id, this: this, args: arguments };
+				go._pendingEvent = event;
+				go._resume();
+				return event.result;
+			};
+		}
+	}
+
+	if (
+		global.require &&
+		global.require.main === module &&
+		global.process &&
+		global.process.versions &&
+		!global.process.versions.electron
+	) {
+		if (process.argv.length != 3) {
+			console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
+			process.exit(1);
+		}
+
+		const go = new Go();
+		WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then(async (result) => {
+			let exitCode = await go.run(result.instance);
+			process.exit(exitCode);
+		}).catch((err) => {
+			console.error(err);
+			process.exit(1);
+		});
+	}
+})();

frontend/src/common/prettier/plugins/groovy/index.ts

@@ -0,0 +1,67 @@
+/**
+ * Prettier Plugin for Groovy/Jenkins file formatting
+ * 
+ * This plugin provides support for formatting Groovy and Jenkins files using the groovy-beautify library.
+ * It supports .groovy files and Jenkins-related files like Jenkinsfile.
+ */
+import type { Plugin, Parser, Printer } from 'prettier';
+import groovyBeautify from 'groovy-beautify';
+
+const parserName = 'groovy';
+
+// 语言配置
+const languages = [
+    {
+        name: 'Groovy',
+        aliases: ['groovy'],
+        parsers: [parserName],
+        filenames: ['jenkinsfile', 'Jenkinsfile'],
+        extensions: ['.jenkinsfile', '.Jenkinsfile', '.groovy'],
+        aceMode: 'groovy',
+        tmScope: 'source.groovy',
+        linguistLanguageId: 142,
+        vscodeLanguageIds: ['groovy']
+    },
+];
+
+// 解析器配置
+const groovyParser: Parser<string> = {
+    astFormat: parserName,
+    parse: (text: string) => text,
+    locStart: () => 0,
+    locEnd: (node: string) => node.length,
+};
+
+// 打印器配置
+const groovyPrinter: Printer<string> = {
+    print: (path, options) => {
+        try {
+            return groovyBeautify(path.node, {
+                width: options.printWidth || 80,
+            }).trim();
+        } catch (error) {
+            return path.node;
+        }
+    },
+};
+
+const options = {
+
+};
+
+// 插件对象
+const groovyPlugin: Plugin = {
+    languages,
+    parsers: {
+        [parserName]: groovyParser,
+    },
+    printers: {
+        [parserName]: groovyPrinter,
+    },
+    options,
+};
+
+export default groovyPlugin;
+export { languages };
+export const parsers = groovyPlugin.parsers;
+export const printers = groovyPlugin.printers;

frontend/src/common/prettier/plugins/java/comments.d.ts

@@ -0,0 +1,17 @@
+import type { IToken } from "java-parser";
+import { type AstPath } from "prettier";
+import { type JavaNode, type JavaNonTerminal, type JavaParserOptions } from "./printers/helpers.js";
+export declare function determineFormatterOffOnRanges(cst: JavaNonTerminal): void;
+export declare function isFullyBetweenFormatterOffOn(path: AstPath<JavaNode>): boolean;
+export declare function canAttachComment(node: JavaNode): boolean;
+export declare function handleLineComment(commentNode: JavaComment, _: string, options: JavaParserOptions): boolean;
+export declare function handleRemainingComment(commentNode: JavaComment): boolean;
+export type JavaComment = IToken & {
+    value: string;
+    leading: boolean;
+    trailing: boolean;
+    printed: boolean;
+    enclosingNode?: JavaNonTerminal;
+    precedingNode?: JavaNonTerminal;
+    followingNode?: JavaNonTerminal;
+};

frontend/src/common/prettier/plugins/java/comments.js

@@ -0,0 +1,199 @@
+import { util } from "prettier";
+import parser from "./parser.js";
+import { isEmptyStatement, isNonTerminal, isTerminal } from "./printers/helpers.js";
+const formatterOffOnRangesByCst = new WeakMap();
+export function determineFormatterOffOnRanges(cst) {
+    const { comments } = cst;
+    if (!comments) {
+        return;
+    }
+    const ranges = comments
+        .filter(({ image }) => /^(\/\/\s*@formatter:(off|on)\s*|\/\*\s*@formatter:(off|on)\s*\*\/)$/.test(image))
+        .reduce((ranges, { image, startOffset }) => {
+        const previous = ranges.at(-1);
+        if (image.endsWith("off")) {
+            if ((previous === null || previous === void 0 ? void 0 : previous.on) !== Infinity) {
+                ranges.push({ off: startOffset, on: Infinity });
+            }
+        }
+        else if ((previous === null || previous === void 0 ? void 0 : previous.on) === Infinity) {
+            previous.on = startOffset;
+        }
+        return ranges;
+    }, new Array());
+    formatterOffOnRangesByCst.set(cst, ranges);
+}
+export function isFullyBetweenFormatterOffOn(path) {
+    var _a;
+    const { node, root } = path;
+    const start = parser.locStart(node);
+    const end = parser.locEnd(node);
+    return (((_a = formatterOffOnRangesByCst
+        .get(root)) === null || _a === void 0 ? void 0 : _a.some(range => range.off < start && end < range.on)) === true);
+}
+export function canAttachComment(node) {
+    var _a, _b, _c;
+    if (isTerminal(node)) {
+        const { name, CATEGORIES } = node.tokenType;
+        return (name === "Identifier" ||
+            (CATEGORIES === null || CATEGORIES === void 0 ? void 0 : CATEGORIES.find(({ name }) => name === "BinaryOperator")) !== undefined);
+    }
+    const { children, name } = node;
+    switch (name) {
+        case "argumentList":
+        case "blockStatements":
+        case "emptyStatement":
+        case "enumBodyDeclarations":
+            return false;
+        case "annotationInterfaceMemberDeclaration":
+        case "classMemberDeclaration":
+        case "interfaceMemberDeclaration":
+        case "methodBody":
+            return !children.Semicolon;
+        case "blockStatement":
+            return !children.statement || !isEmptyStatement(children.statement[0]);
+        case "classBodyDeclaration":
+            return !((_a = children.classMemberDeclaration) === null || _a === void 0 ? void 0 : _a[0].children.Semicolon);
+        case "recordBodyDeclaration":
+            return !((_c = (_b = children.classBodyDeclaration) === null || _b === void 0 ? void 0 : _b[0].children.classMemberDeclaration) === null || _c === void 0 ? void 0 : _c[0].children.Semicolon);
+        case "statement":
+            return !isEmptyStatement(node);
+        case "statementWithoutTrailingSubstatement":
+            return !children.emptyStatement;
+        default:
+            return true;
+    }
+}
+export function handleLineComment(commentNode, _, options) {
+    return [
+        handleBinaryExpressionComments,
+        handleFqnOrRefTypeComments,
+        handleIfStatementComments,
+        handleJumpStatementComments,
+        handleLabeledStatementComments,
+        handleNameComments
+    ].some(fn => fn(commentNode, options));
+}
+export function handleRemainingComment(commentNode) {
+    return [
+        handleFqnOrRefTypeComments,
+        handleMethodDeclaratorComments,
+        handleNameComments,
+        handleJumpStatementComments
+    ].some(fn => fn(commentNode));
+}
+function handleBinaryExpressionComments(commentNode, options) {
+    const { enclosingNode, precedingNode, followingNode } = commentNode;
+    if (enclosingNode &&
+        isNonTerminal(enclosingNode) &&
+        enclosingNode.name === "binaryExpression") {
+        if (isBinaryOperator(followingNode)) {
+            if (options.experimentalOperatorPosition === "start") {
+                util.addLeadingComment(followingNode, commentNode);
+            }
+            else {
+                util.addTrailingComment(followingNode, commentNode);
+            }
+            return true;
+        }
+        else if (options.experimentalOperatorPosition === "start" &&
+            isBinaryOperator(precedingNode)) {
+            util.addLeadingComment(precedingNode, commentNode);
+            return true;
+        }
+    }
+    return false;
+}
+function handleFqnOrRefTypeComments(commentNode) {
+    const { enclosingNode, followingNode } = commentNode;
+    if (enclosingNode &&
+        isNonTerminal(enclosingNode) &&
+        enclosingNode.name === "fqnOrRefType" &&
+        followingNode) {
+        util.addLeadingComment(followingNode, commentNode);
+        return true;
+    }
+    return false;
+}
+function handleIfStatementComments(commentNode) {
+    const { enclosingNode, precedingNode } = commentNode;
+    if (enclosingNode &&
+        isNonTerminal(enclosingNode) &&
+        enclosingNode.name === "ifStatement" &&
+        precedingNode &&
+        isNonTerminal(precedingNode) &&
+        precedingNode.name === "statement") {
+        util.addDanglingComment(enclosingNode, commentNode, undefined);
+        return true;
+    }
+    return false;
+}
+function handleJumpStatementComments(commentNode) {
+    const { enclosingNode, precedingNode, followingNode } = commentNode;
+    if (enclosingNode &&
+        !precedingNode &&
+        !followingNode &&
+        isNonTerminal(enclosingNode) &&
+        ["breakStatement", "continueStatement", "returnStatement"].includes(enclosingNode.name)) {
+        util.addTrailingComment(enclosingNode, commentNode);
+        return true;
+    }
+    return false;
+}
+function handleLabeledStatementComments(commentNode) {
+    const { enclosingNode, precedingNode } = commentNode;
+    if (enclosingNode &&
+        precedingNode &&
+        isNonTerminal(enclosingNode) &&
+        enclosingNode.name === "labeledStatement" &&
+        isTerminal(precedingNode) &&
+        precedingNode.tokenType.name === "Identifier") {
+        util.addLeadingComment(precedingNode, commentNode);
+        return true;
+    }
+    return false;
+}
+function handleMethodDeclaratorComments(commentNode) {
+    const { enclosingNode } = commentNode;
+    if (enclosingNode &&
+        isNonTerminal(enclosingNode) &&
+        enclosingNode.name === "methodDeclarator" &&
+        !enclosingNode.children.receiverParameter &&
+        !enclosingNode.children.formalParameterList &&
+        enclosingNode.children.LBrace[0].startOffset < commentNode.startOffset &&
+        commentNode.startOffset < enclosingNode.children.RBrace[0].startOffset) {
+        util.addDanglingComment(enclosingNode, commentNode, undefined);
+        return true;
+    }
+    return false;
+}
+function handleNameComments(commentNode) {
+    const { enclosingNode, precedingNode } = commentNode;
+    if (enclosingNode &&
+        precedingNode &&
+        isNonTerminal(enclosingNode) &&
+        isTerminal(precedingNode) &&
+        precedingNode.tokenType.name === "Identifier" &&
+        [
+            "ambiguousName",
+            "classOrInterfaceTypeToInstantiate",
+            "expressionName",
+            "moduleDeclaration",
+            "moduleName",
+            "packageDeclaration",
+            "packageName",
+            "packageOrTypeName",
+            "typeName"
+        ].includes(enclosingNode.name)) {
+        util.addTrailingComment(precedingNode, commentNode);
+        return true;
+    }
+    return false;
+}
+function isBinaryOperator(node) {
+    var _a;
+    return (node !== undefined &&
+        (isNonTerminal(node)
+            ? node.name === "shiftOperator"
+            : (_a = node.tokenType.CATEGORIES) === null || _a === void 0 ? void 0 : _a.some(({ name }) => name === "BinaryOperator")));
+}

frontend/src/common/prettier/plugins/java/index.d.ts

@@ -0,0 +1,563 @@
+import type { JavaNode } from "./printers/helpers.js";
+declare const _default: {
+    languages: {
+        name: string;
+        parsers: "java"[];
+        group: string;
+        tmScope: string;
+        aceMode: string;
+        codemirrorMode: string;
+        codemirrorMimeType: string;
+        extensions: string[];
+        linguistLanguageId: number;
+        vscodeLanguageIds: string[];
+    }[];
+    parsers: {
+        java: {
+            parse(text: string, options: import("./printers/helpers.js").JavaParserOptions): import("./printers/helpers.js").JavaNonTerminal;
+            astFormat: string;
+            hasPragma(text: string): boolean;
+            locStart(node: JavaNode): number;
+            locEnd(node: JavaNode): number;
+        };
+    };
+    printers: {
+        java: {
+            print(path: import("prettier").AstPath<import("java-parser").ArrayInitializerCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableInitializerListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BlockCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BlockStatementsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LocalVariableDeclarationStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LocalVariableDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LabeledStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExpressionStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").IfStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AssertStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SwitchStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SwitchBlockCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SwitchBlockStatementGroupCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SwitchLabelCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SwitchRuleCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").WhileStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DoStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BasicForStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StatementExpressionListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnhancedForStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BreakStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ContinueStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ReturnStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ThrowStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SynchronizedStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TryStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CatchesCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CatchClauseCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CatchFormalParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CatchTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FinallyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TryWithResourcesStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ResourceSpecificationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ResourceListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").YieldStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ForInitCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ForUpdateCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StatementWithoutTrailingSubstatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ForStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BlockStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CaseConstantCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CasePatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EmptyStatementCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StatementExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LocalVariableTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ResourceCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableAccessCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NormalClassDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeParametersCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeParameterListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassExtendsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassImplementsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceTypeListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassMemberDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FieldDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableDeclaratorListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableDeclaratorCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableDeclaratorIdCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannPrimitiveTypeWithOptionalDimsSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannReferenceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodHeaderCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodDeclaratorCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ReceiverParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FormalParameterListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableParaRegularParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableArityParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ThrowsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExceptionTypeListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StaticInitializerCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstructorDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstructorDeclaratorCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstructorBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnqualifiedExplicitConstructorInvocationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").QualifiedExplicitConstructorInvocationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumConstantListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumConstantCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumBodyDeclarationsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordHeaderCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordComponentListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordComponentCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableArityRecordComponentCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CompactConstructorDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableInitializerCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").VariableModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannClassTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassBodyDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InstanceInitializerCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassPermitsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FieldModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstructorModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").SimpleTypeNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExplicitConstructorInvocationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EnumConstantModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExceptionTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FormalParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ResultCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordBodyDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordComponentModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannClassOrInterfaceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannInterfaceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannPrimitiveTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnannTypeVariableCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaParametersCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaParametersWithBracesCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConciseLambdaParameterListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NormalLambdaParameterListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RegularLambdaParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConditionalExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BinaryExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnaryExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnaryExpressionNotPlusMinusCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PrimaryCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PrimarySuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FqnOrRefTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FqnOrRefTypePartFirstCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FqnOrRefTypePartRestCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FqnOrRefTypePartCommonCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ParenthesisExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PrimitiveCastExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ReferenceTypeCastExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UnqualifiedClassInstanceCreationExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassOrInterfaceTypeToInstantiateCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodInvocationSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ArgumentListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ArrayCreationExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ArrayCreationExpressionWithoutInitializerSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ArrayCreationWithInitializerSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DimExprsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DimExprCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassLiteralSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ArrayAccessSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodReferenceSuffixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").StringTemplateCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TextBlockTemplateCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RecordPatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ComponentPatternListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").GuardCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TemplateCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypePatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CastExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeArgumentsOrDiamondCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DiamondCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ComponentPatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MatchAllPatternCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConciseLambdaParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").EmbeddedExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaParameterListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NormalLambdaParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LambdaParameterTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NewExpressionCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PrimaryPrefixCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TemplateArgumentCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NormalInterfaceDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceExtendsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceMemberDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstantDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceMethodDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationInterfaceDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationInterfaceBodyCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationInterfaceMemberDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationInterfaceElementDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DefaultValueCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ElementValuePairListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ElementValuePairCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ElementValueArrayInitializerCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ElementValueListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ElementValueCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AnnotationInterfaceElementModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ConstantModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfacePermitsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceMethodModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").LiteralCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ShiftOperatorCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").BooleanLiteralCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FloatingPointLiteralCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").IntegerLiteralCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").MethodNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AmbiguousNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeIdentifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExpressionNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PackageNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ModuleNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PackageOrTypeNameCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").CompilationUnitCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").OrdinaryCompilationUnitCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ModularCompilationUnitCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PackageDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ImportDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ModuleDeclarationCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RequiresModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ExportsModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").OpensModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").UsesModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ProvidesModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ModuleDirectiveCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").RequiresModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PackageModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").PrimitiveTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ReferenceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeVariableCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").DimsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeParameterCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeBoundCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").AdditionalBoundCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeArgumentsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeArgumentListCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").WildcardCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").WildcardBoundsCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").InterfaceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").NumericTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").ClassOrInterfaceTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").FloatingPointTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").IntegralTypeCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeArgumentCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").TypeParameterModifierCstNode & {
+                comments?: import("./comments.js").JavaComment[];
+            }> | import("prettier").AstPath<import("java-parser").IToken & {
+                comments?: import("./comments.js").JavaComment[];
+            }>, options: import("prettier").ParserOptions<JavaNode>, print: (path: import("prettier").AstPath<JavaNode>) => import("prettier").Doc, args: unknown): import("prettier/doc.js").builders.Doc;
+            hasPrettierIgnore(path: import("prettier").AstPath<JavaNode>): boolean;
+            canAttachComment: typeof import("./comments.js").canAttachComment;
+            isBlockComment(node: JavaNode): boolean;
+            printComment(commentPath: import("prettier").AstPath<JavaNode>): string | import("prettier/doc.js").builders.Doc[];
+            getCommentChildNodes(node: JavaNode): any[];
+            handleComments: {
+                ownLine: typeof import("./comments.js").handleLineComment;
+                endOfLine: typeof import("./comments.js").handleLineComment;
+                remaining: typeof import("./comments.js").handleRemainingComment;
+            };
+        };
+    };
+    options: {
+        entrypoint: {
+            type: "choice";
+            category: string;
+            default: string;
+            choices: {
+                value: string;
+                description: string;
+            }[];
+            description: string;
+        };
+        arrowParens: {
+            type: "choice";
+            category: string;
+            default: string;
+            choices: {
+                value: string;
+                description: string;
+            }[];
+            description: string;
+        };
+        trailingComma: {
+            type: "choice";
+            category: string;
+            default: string;
+            choices: {
+                value: string;
+                description: string;
+            }[];
+            description: string;
+        };
+        experimentalOperatorPosition: {
+            type: "choice";
+            category: string;
+            default: string;
+            choices: {
+                value: string;
+                description: string;
+            }[];
+            description: string;
+        };
+    };
+    defaultOptions: {
+        arrowParens: "avoid";
+    };
+};
+export default _default;

frontend/src/common/prettier/plugins/java/index.js

@@ -0,0 +1,29 @@
+import options from "./options.js";
+import parser from "./parser.js";
+import printer from "./printer.js";
+export default {
+    languages: [
+        {
+            name: "Java",
+            parsers: ["java"],
+            group: "Java",
+            tmScope: "source.java",
+            aceMode: "java",
+            codemirrorMode: "clike",
+            codemirrorMimeType: "text/x-java",
+            extensions: [".java"],
+            linguistLanguageId: 181,
+            vscodeLanguageIds: ["java"]
+        }
+    ],
+    parsers: {
+        java: parser
+    },
+    printers: {
+        java: printer
+    },
+    options,
+    defaultOptions: {
+        arrowParens: "avoid"
+    }
+};

frontend/src/common/prettier/plugins/java/options.d.ts

@@ -0,0 +1,43 @@
+declare const _default: {
+    entrypoint: {
+        type: "choice";
+        category: string;
+        default: string;
+        choices: {
+            value: string;
+            description: string;
+        }[];
+        description: string;
+    };
+    arrowParens: {
+        type: "choice";
+        category: string;
+        default: string;
+        choices: {
+            value: string;
+            description: string;
+        }[];
+        description: string;
+    };
+    trailingComma: {
+        type: "choice";
+        category: string;
+        default: string;
+        choices: {
+            value: string;
+            description: string;
+        }[];
+        description: string;
+    };
+    experimentalOperatorPosition: {
+        type: "choice";
+        category: string;
+        default: string;
+        choices: {
+            value: string;
+            description: string;
+        }[];
+        description: string;
+    };
+};
+export default _default;

frontend/src/common/prettier/plugins/java/options.js

@@ -0,0 +1,284 @@
+export default {
+    entrypoint: {
+        type: "choice",
+        category: "Global",
+        default: "compilationUnit",
+        // sed -nr 's/.*\.RULE\(([^,]+),.*/\1/p' $(ls path/to/java-parser/rules/folder/*)
+        choices: [
+            { value: "arrayInitializer", description: "" },
+            { value: "variableInitializerList", description: "" },
+            { value: "block", description: "" },
+            { value: "blockStatements", description: "" },
+            { value: "blockStatement", description: "" },
+            { value: "localVariableDeclarationStatement", description: "" },
+            { value: "localVariableDeclaration", description: "" },
+            { value: "localVariableType", description: "" },
+            { value: "statement", description: "" },
+            { value: "statementWithoutTrailingSubstatement", description: "" },
+            { value: "emptyStatement", description: "" },
+            { value: "labeledStatement", description: "" },
+            { value: "expressionStatement", description: "" },
+            { value: "statementExpression", description: "" },
+            { value: "ifStatement", description: "" },
+            { value: "assertStatement", description: "" },
+            { value: "switchStatement", description: "" },
+            { value: "switchBlock", description: "" },
+            { value: "switchBlockStatementGroup", description: "" },
+            { value: "switchLabel", description: "" },
+            { value: "switchRule", description: "" },
+            { value: "caseConstant", description: "" },
+            { value: "casePattern", description: "" },
+            { value: "whileStatement", description: "" },
+            { value: "doStatement", description: "" },
+            { value: "forStatement", description: "" },
+            { value: "basicForStatement", description: "" },
+            { value: "forInit", description: "" },
+            { value: "forUpdate", description: "" },
+            { value: "statementExpressionList", description: "" },
+            { value: "enhancedForStatement", description: "" },
+            { value: "breakStatement", description: "" },
+            { value: "continueStatement", description: "" },
+            { value: "returnStatement", description: "" },
+            { value: "throwStatement", description: "" },
+            { value: "synchronizedStatement", description: "" },
+            { value: "tryStatement", description: "" },
+            { value: "catches", description: "" },
+            { value: "catchClause", description: "" },
+            { value: "catchFormalParameter", description: "" },
+            { value: "catchType", description: "" },
+            { value: "finally", description: "" },
+            { value: "tryWithResourcesStatement", description: "" },
+            { value: "resourceSpecification", description: "" },
+            { value: "resourceList", description: "" },
+            { value: "resource", description: "" },
+            { value: "yieldStatement", description: "" },
+            { value: "variableAccess", description: "" },
+            { value: "classDeclaration", description: "" },
+            { value: "normalClassDeclaration", description: "" },
+            { value: "classModifier", description: "" },
+            { value: "typeParameters", description: "" },
+            { value: "typeParameterList", description: "" },
+            { value: "classExtends", description: "" },
+            { value: "classImplements", description: "" },
+            { value: "interfaceTypeList", description: "" },
+            { value: "classPermits", description: "" },
+            { value: "classBody", description: "" },
+            { value: "classBodyDeclaration", description: "" },
+            { value: "classMemberDeclaration", description: "" },
+            { value: "fieldDeclaration", description: "" },
+            { value: "fieldModifier", description: "" },
+            { value: "variableDeclaratorList", description: "" },
+            { value: "variableDeclarator", description: "" },
+            { value: "variableDeclaratorId", description: "" },
+            { value: "variableInitializer", description: "" },
+            { value: "unannType", description: "" },
+            { value: "unannPrimitiveTypeWithOptionalDimsSuffix", description: "" },
+            { value: "unannPrimitiveType", description: "" },
+            { value: "unannReferenceType", description: "" },
+            { value: "unannClassOrInterfaceType", description: "" },
+            { value: "unannClassType", description: "" },
+            { value: "unannInterfaceType", description: "" },
+            { value: "unannTypeVariable", description: "" },
+            { value: "methodDeclaration", description: "" },
+            { value: "methodModifier", description: "" },
+            { value: "methodHeader", description: "" },
+            { value: "result", description: "" },
+            { value: "methodDeclarator", description: "" },
+            { value: "receiverParameter", description: "" },
+            { value: "formalParameterList", description: "" },
+            { value: "formalParameter", description: "" },
+            { value: "variableParaRegularParameter", description: "" },
+            { value: "variableArityParameter", description: "" },
+            { value: "variableModifier", description: "" },
+            { value: "throws", description: "" },
+            { value: "exceptionTypeList", description: "" },
+            { value: "exceptionType", description: "" },
+            { value: "methodBody", description: "" },
+            { value: "instanceInitializer", description: "" },
+            { value: "staticInitializer", description: "" },
+            { value: "constructorDeclaration", description: "" },
+            { value: "constructorModifier", description: "" },
+            { value: "constructorDeclarator", description: "" },
+            { value: "simpleTypeName", description: "" },
+            { value: "constructorBody", description: "" },
+            { value: "explicitConstructorInvocation", description: "" },
+            { value: "unqualifiedExplicitConstructorInvocation", description: "" },
+            { value: "qualifiedExplicitConstructorInvocation", description: "" },
+            { value: "enumDeclaration", description: "" },
+            { value: "enumBody", description: "" },
+            { value: "enumConstantList", description: "" },
+            { value: "enumConstant", description: "" },
+            { value: "enumConstantModifier", description: "" },
+            { value: "enumBodyDeclarations", description: "" },
+            { value: "recordDeclaration", description: "" },
+            { value: "recordHeader", description: "" },
+            { value: "recordComponentList", description: "" },
+            { value: "recordComponent", description: "" },
+            { value: "variableArityRecordComponent", description: "" },
+            { value: "recordComponentModifier", description: "" },
+            { value: "recordBody", description: "" },
+            { value: "recordBodyDeclaration", description: "" },
+            { value: "compactConstructorDeclaration", description: "" },
+            { value: "isDims", description: "" },
+            { value: "expression", description: "" },
+            { value: "lambdaExpression", description: "" },
+            { value: "lambdaParameters", description: "" },
+            { value: "lambdaParametersWithBraces", description: "" },
+            { value: "lambdaParameterList", description: "" },
+            { value: "conciseLambdaParameterList", description: "" },
+            { value: "normalLambdaParameterList", description: "" },
+            { value: "normalLambdaParameter", description: "" },
+            { value: "regularLambdaParameter", description: "" },
+            { value: "lambdaParameterType", description: "" },
+            { value: "conciseLambdaParameter", description: "" },
+            { value: "lambdaBody", description: "" },
+            { value: "conditionalExpression", description: "" },
+            { value: "binaryExpression", description: "" },
+            { value: "unaryExpression", description: "" },
+            { value: "unaryExpressionNotPlusMinus", description: "" },
+            { value: "primary", description: "" },
+            { value: "primaryPrefix", description: "" },
+            { value: "primarySuffix", description: "" },
+            { value: "fqnOrRefType", description: "" },
+            { value: "fqnOrRefTypePartRest", description: "" },
+            { value: "fqnOrRefTypePartCommon", description: "" },
+            { value: "fqnOrRefTypePartFirst", description: "" },
+            { value: "parenthesisExpression", description: "" },
+            { value: "castExpression", description: "" },
+            { value: "primitiveCastExpression", description: "" },
+            { value: "referenceTypeCastExpression", description: "" },
+            { value: "newExpression", description: "" },
+            { value: "unqualifiedClassInstanceCreationExpression", description: "" },
+            { value: "classOrInterfaceTypeToInstantiate", description: "" },
+            { value: "typeArgumentsOrDiamond", description: "" },
+            { value: "diamond", description: "" },
+            { value: "methodInvocationSuffix", description: "" },
+            { value: "argumentList", description: "" },
+            { value: "arrayCreationExpression", description: "" },
+            {
+                value: "arrayCreationExpressionWithoutInitializerSuffix",
+                description: ""
+            },
+            { value: "arrayCreationWithInitializerSuffix", description: "" },
+            { value: "dimExprs", description: "" },
+            { value: "dimExpr", description: "" },
+            { value: "classLiteralSuffix", description: "" },
+            { value: "arrayAccessSuffix", description: "" },
+            { value: "methodReferenceSuffix", description: "" },
+            { value: "templateArgument", description: "" },
+            { value: "template", description: "" },
+            { value: "stringTemplate", description: "" },
+            { value: "textBlockTemplate", description: "" },
+            { value: "embeddedExpression", description: "" },
+            { value: "pattern", description: "" },
+            { value: "typePattern", description: "" },
+            { value: "recordPattern", description: "" },
+            { value: "componentPatternList", description: "" },
+            { value: "componentPattern", description: "" },
+            { value: "matchAllPattern", description: "" },
+            { value: "guard", description: "" },
+            { value: "isRefTypeInMethodRef", description: "" },
+            { value: "interfaceDeclaration", description: "" },
+            { value: "normalInterfaceDeclaration", description: "" },
+            { value: "interfaceModifier", description: "" },
+            { value: "interfaceExtends", description: "" },
+            { value: "interfacePermits", description: "" },
+            { value: "interfaceBody", description: "" },
+            { value: "interfaceMemberDeclaration", description: "" },
+            { value: "constantDeclaration", description: "" },
+            { value: "constantModifier", description: "" },
+            { value: "interfaceMethodDeclaration", description: "" },
+            { value: "interfaceMethodModifier", description: "" },
+            { value: "annotationInterfaceDeclaration", description: "" },
+            { value: "annotationInterfaceBody", description: "" },
+            { value: "annotationInterfaceMemberDeclaration", description: "" },
+            { value: "annotationInterfaceElementDeclaration", description: "" },
+            { value: "annotationInterfaceElementModifier", description: "" },
+            { value: "defaultValue", description: "" },
+            { value: "annotation", description: "" },
+            { value: "elementValuePairList", description: "" },
+            { value: "elementValuePair", description: "" },
+            { value: "elementValue", description: "" },
+            { value: "elementValueArrayInitializer", description: "" },
+            { value: "elementValueList", description: "" },
+            { value: "literal", description: "" },
+            { value: "integerLiteral", description: "" },
+            { value: "floatingPointLiteral", description: "" },
+            { value: "booleanLiteral", description: "" },
+            { value: "shiftOperator", description: "" },
+            { value: "moduleName", description: "" },
+            { value: "packageName", description: "" },
+            { value: "typeName", description: "" },
+            { value: "expressionName", description: "" },
+            { value: "methodName", description: "" },
+            { value: "packageOrTypeName", description: "" },
+            { value: "ambiguousName", description: "" },
+            { value: "compilationUnit", description: "" },
+            { value: "ordinaryCompilationUnit", description: "" },
+            { value: "modularCompilationUnit", description: "" },
+            { value: "packageDeclaration", description: "" },
+            { value: "packageModifier", description: "" },
+            { value: "importDeclaration", description: "" },
+            { value: "typeDeclaration", description: "" },
+            { value: "moduleDeclaration", description: "" },
+            { value: "moduleDirective", description: "" },
+            { value: "requiresModuleDirective", description: "" },
+            { value: "exportsModuleDirective", description: "" },
+            { value: "opensModuleDirective", description: "" },
+            { value: "usesModuleDirective", description: "" },
+            { value: "providesModuleDirective", description: "" },
+            { value: "requiresModifier", description: "" },
+            { value: "primitiveType", description: "" },
+            { value: "numericType", description: "" },
+            { value: "integralType", description: "" },
+            { value: "floatingPointType", description: "" },
+            { value: "referenceType", description: "" },
+            { value: "classOrInterfaceType", description: "" },
+            { value: "classType", description: "" },
+            { value: "interfaceType", description: "" },
+            { value: "typeVariable", description: "" },
+            { value: "dims", description: "" },
+            { value: "typeParameter", description: "" },
+            { value: "typeParameterModifier", description: "" },
+            { value: "typeBound", description: "" },
+            { value: "additionalBound", description: "" },
+            { value: "typeArguments", description: "" },
+            { value: "typeArgumentList", description: "" },
+            { value: "typeArgument", description: "" },
+            { value: "wildcard", description: "" },
+            { value: "wildcardBounds", description: "" }
+        ],
+        description: "Prettify from the entrypoint, allowing to use prettier on snippet."
+    },
+    arrowParens: {
+        type: "choice",
+        category: "Java",
+        default: "always",
+        choices: [
+            { value: "always", description: "" },
+            { value: "avoid", description: "" }
+        ],
+        description: "Include parentheses around a sole arrow function parameter."
+    },
+    trailingComma: {
+        type: "choice",
+        category: "Java",
+        default: "all",
+        choices: [
+            { value: "all", description: "" },
+            { value: "es5", description: "" },
+            { value: "none", description: "" }
+        ],
+        description: "Print trailing commas wherever possible when multi-line."
+    },
+    experimentalOperatorPosition: {
+        type: "choice",
+        category: "Java",
+        default: "end",
+        choices: [
+            { value: "start", description: "" },
+            { value: "end", description: "" }
+        ],
+        description: "Where to print operators when binary expressions wrap lines."
+    }
+};

frontend/src/common/prettier/plugins/java/parser.d.ts

@@ -0,0 +1,9 @@
+import { type JavaNode, type JavaNonTerminal, type JavaParserOptions } from "./printers/helpers.js";
+declare const _default: {
+    parse(text: string, options: JavaParserOptions): JavaNonTerminal;
+    astFormat: string;
+    hasPragma(text: string): boolean;
+    locStart(node: JavaNode): number;
+    locEnd(node: JavaNode): number;
+};
+export default _default;

frontend/src/common/prettier/plugins/java/parser.js

@@ -0,0 +1,24 @@
+import { parse } from "java-parser";
+import { determineFormatterOffOnRanges } from "./comments.js";
+import { isTerminal } from "./printers/helpers.js";
+export default {
+    parse(text, options) {
+        var _a;
+        const cst = parse(text, options.entrypoint);
+        (_a = cst.comments) === null || _a === void 0 ? void 0 : _a.forEach(comment => {
+            comment.value = comment.image;
+        });
+        determineFormatterOffOnRanges(cst);
+        return cst;
+    },
+    astFormat: "java",
+    hasPragma(text) {
+        return /^\/\*\*\n\s+\*\s@(format|prettier)\n\s+\*\//.test(text);
+    },
+    locStart(node) {
+        return isTerminal(node) ? node.startOffset : node.location.startOffset;
+    },
+    locEnd(node) {
+        return (isTerminal(node) ? node.endOffset : node.location.endOffset) + 1;
+    }
+};

frontend/src/common/prettier/plugins/java/printer.d.ts

@@ -0,0 +1,18 @@
+import type { AstPath } from "prettier";
+import { canAttachComment, handleLineComment, handleRemainingComment } from "./comments.js";
+import { type JavaNode } from "./printers/helpers.js";
+declare const _default: {
+    print(path: DistributedAstPath<JavaNode>, options: import("prettier").ParserOptions<JavaNode>, print: (path: AstPath<JavaNode>) => import("prettier").Doc, args: unknown): import("prettier/doc.js").builders.Doc;
+    hasPrettierIgnore(path: AstPath<JavaNode>): boolean;
+    canAttachComment: typeof canAttachComment;
+    isBlockComment(node: JavaNode): boolean;
+    printComment(commentPath: AstPath<JavaNode>): string | import("prettier/doc.js").builders.Doc[];
+    getCommentChildNodes(node: JavaNode): any[];
+    handleComments: {
+        ownLine: typeof handleLineComment;
+        endOfLine: typeof handleLineComment;
+        remaining: typeof handleRemainingComment;
+    };
+};
+export default _default;
+type DistributedAstPath<T> = T extends any ? AstPath<T> : never;

frontend/src/common/prettier/plugins/java/printer.js

@@ -0,0 +1,40 @@
+import { canAttachComment, handleLineComment, handleRemainingComment, isFullyBetweenFormatterOffOn } from "./comments.js";
+import { isNonTerminal, isTerminal, printComment } from "./printers/helpers.js";
+import { printerForNodeType } from "./printers/index.js";
+export default {
+    print(path, options, print, args) {
+        return hasTerminal(path)
+            ? path.node.image
+            : printerForNodeType(path.node.name)(path, print, options, args);
+    },
+    hasPrettierIgnore(path) {
+        var _a;
+        const { node } = path;
+        return (((_a = node.comments) === null || _a === void 0 ? void 0 : _a.some(({ image }) => /^(\/\/\s*prettier-ignore|\/\*\s*prettier-ignore\s*\*\/)$/.test(image))) === true ||
+            (canAttachComment(node) && isFullyBetweenFormatterOffOn(path)));
+    },
+    canAttachComment,
+    isBlockComment(node) {
+        return isTerminal(node) && node.tokenType.name === "TraditionalComment";
+    },
+    printComment(commentPath) {
+        const { node } = commentPath;
+        if (isNonTerminal(node) || node.tokenType.GROUP !== "comments") {
+            throw new Error(`Not a comment: ${JSON.stringify(node)}`);
+        }
+        return printComment(node);
+    },
+    getCommentChildNodes(node) {
+        return isNonTerminal(node)
+            ? Object.values(node.children).flatMap(child => child)
+            : [];
+    },
+    handleComments: {
+        ownLine: handleLineComment,
+        endOfLine: handleLineComment,
+        remaining: handleRemainingComment
+    }
+};
+function hasTerminal(path) {
+    return isTerminal(path.node);
+}

frontend/src/common/prettier/plugins/java/printers/arrays.d.ts

@@ -0,0 +1,9 @@
+declare const _default: {
+    arrayInitializer(path: import("prettier").AstPath<import("java-parser").ArrayInitializerCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn, options: import("./helpers.js").JavaParserOptions): import("prettier/doc.js").builders.Group | "{}";
+    variableInitializerList(path: import("prettier").AstPath<import("java-parser").VariableInitializerListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): import("prettier/doc.js").builders.Doc[];
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/arrays.js

@@ -0,0 +1,9 @@
+import { printArrayInitializer, printList } from "./helpers.js";
+export default {
+    arrayInitializer(path, print, options) {
+        return printArrayInitializer(path, print, options, "variableInitializerList");
+    },
+    variableInitializerList(path, print) {
+        return printList(path, print, "variableInitializer");
+    }
+};

frontend/src/common/prettier/plugins/java/printers/blocks-and-statements.d.ts

@@ -0,0 +1,117 @@
+import { builders } from "prettier/doc";
+import { printSingle } from "./helpers.js";
+declare const _default: {
+    block(path: import("prettier").AstPath<import("java-parser").BlockCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    blockStatements(path: import("prettier").AstPath<import("java-parser").BlockStatementsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    blockStatement: typeof printSingle;
+    localVariableDeclarationStatement(path: import("prettier").AstPath<import("java-parser").LocalVariableDeclarationStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    localVariableDeclaration(path: import("prettier").AstPath<import("java-parser").LocalVariableDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    localVariableType: typeof printSingle;
+    statement: typeof printSingle;
+    statementWithoutTrailingSubstatement: typeof printSingle;
+    emptyStatement(): string;
+    labeledStatement(path: import("prettier").AstPath<import("java-parser").LabeledStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    expressionStatement(path: import("prettier").AstPath<import("java-parser").ExpressionStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    statementExpression: typeof printSingle;
+    ifStatement(path: import("prettier").AstPath<import("java-parser").IfStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    assertStatement(path: import("prettier").AstPath<import("java-parser").AssertStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    switchStatement(path: import("prettier").AstPath<import("java-parser").SwitchStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    switchBlock(path: import("prettier").AstPath<import("java-parser").SwitchBlockCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    switchBlockStatementGroup(path: import("prettier").AstPath<import("java-parser").SwitchBlockStatementGroupCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    switchLabel(path: import("prettier").AstPath<import("java-parser").SwitchLabelCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): "default" | builders.Group | builders.Doc[];
+    switchRule(path: import("prettier").AstPath<import("java-parser").SwitchRuleCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    caseConstant: typeof printSingle;
+    casePattern: typeof printSingle;
+    whileStatement(path: import("prettier").AstPath<import("java-parser").WhileStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    doStatement(path: import("prettier").AstPath<import("java-parser").DoStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): (string | builders.Group | builders.Doc[])[];
+    forStatement: typeof printSingle;
+    basicForStatement(path: import("prettier").AstPath<import("java-parser").BasicForStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    forInit: typeof printSingle;
+    forUpdate: typeof printSingle;
+    statementExpressionList(path: import("prettier").AstPath<import("java-parser").StatementExpressionListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group;
+    enhancedForStatement(path: import("prettier").AstPath<import("java-parser").EnhancedForStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group;
+    breakStatement(path: import("prettier").AstPath<import("java-parser").BreakStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[] | "break;";
+    continueStatement(path: import("prettier").AstPath<import("java-parser").ContinueStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[] | "continue;";
+    returnStatement(path: import("prettier").AstPath<import("java-parser").ReturnStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    throwStatement(path: import("prettier").AstPath<import("java-parser").ThrowStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    synchronizedStatement(path: import("prettier").AstPath<import("java-parser").SynchronizedStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    tryStatement(path: import("prettier").AstPath<import("java-parser").TryStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc;
+    catches(path: import("prettier").AstPath<import("java-parser").CatchesCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    catchClause(path: import("prettier").AstPath<import("java-parser").CatchClauseCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    catchFormalParameter(path: import("prettier").AstPath<import("java-parser").CatchFormalParameterCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    catchType(path: import("prettier").AstPath<import("java-parser").CatchTypeCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    finally(path: import("prettier").AstPath<import("java-parser").FinallyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    tryWithResourcesStatement(path: import("prettier").AstPath<import("java-parser").TryWithResourcesStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    resourceSpecification(path: import("prettier").AstPath<import("java-parser").ResourceSpecificationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group | "()";
+    resourceList(path: import("prettier").AstPath<import("java-parser").ResourceListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    resource: typeof printSingle;
+    yieldStatement(path: import("prettier").AstPath<import("java-parser").YieldStatementCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    variableAccess: typeof printSingle;
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/blocks-and-statements.js

@@ -0,0 +1,337 @@
+import { builders } from "prettier/doc";
+import { call, definedKeys, indentInParentheses, isBinaryExpression, isEmptyStatement, lineEndWithComments, lineStartWithComments, map, onlyDefinedKey, printBlock, printDanglingComments, printSingle, printWithModifiers } from "./helpers.js";
+const { group, hardline, ifBreak, indent, join, line, softline } = builders;
+export default {
+    block(path, print) {
+        const statements = path.node.children.blockStatements
+            ? call(path, print, "blockStatements")
+            : [];
+        return printBlock(path, statements.length ? [statements] : []);
+    },
+    blockStatements(path, print) {
+        return join(hardline, map(path, statementPath => {
+            const { node, previous } = statementPath;
+            const statement = print(statementPath);
+            return previous &&
+                lineStartWithComments(node) > lineEndWithComments(previous) + 1
+                ? [hardline, statement]
+                : statement;
+        }, "blockStatement").filter(doc => doc !== ""));
+    },
+    blockStatement: printSingle,
+    localVariableDeclarationStatement(path, print) {
+        return [call(path, print, "localVariableDeclaration"), ";"];
+    },
+    localVariableDeclaration(path, print) {
+        const declaration = join(" ", [
+            call(path, print, "localVariableType"),
+            call(path, print, "variableDeclaratorList")
+        ]);
+        return printWithModifiers(path, print, "variableModifier", declaration);
+    },
+    localVariableType: printSingle,
+    statement: printSingle,
+    statementWithoutTrailingSubstatement: printSingle,
+    emptyStatement() {
+        return "";
+    },
+    labeledStatement(path, print) {
+        return [
+            call(path, print, "Identifier"),
+            ": ",
+            call(path, print, "statement")
+        ];
+    },
+    expressionStatement(path, print) {
+        return [call(path, print, "statementExpression"), ";"];
+    },
+    statementExpression: printSingle,
+    ifStatement(path, print) {
+        var _a;
+        const { children } = path.node;
+        const hasEmptyStatement = isEmptyStatement(children.statement[0]);
+        const statements = map(path, print, "statement");
+        const statement = [
+            "if ",
+            indentInParentheses(call(path, print, "expression")),
+            hasEmptyStatement ? ";" : [" ", statements[0]]
+        ];
+        if (children.Else) {
+            const danglingComments = printDanglingComments(path);
+            if (danglingComments.length) {
+                statement.push(hardline, ...danglingComments, hardline);
+            }
+            else {
+                const elseHasBlock = ((_a = children.statement[0].children
+                    .statementWithoutTrailingSubstatement) === null || _a === void 0 ? void 0 : _a[0].children.block) !==
+                    undefined;
+                statement.push(elseHasBlock ? " " : hardline);
+            }
+            const elseHasEmptyStatement = isEmptyStatement(children.statement[1]);
+            statement.push("else", elseHasEmptyStatement ? ";" : [" ", statements[1]]);
+        }
+        return statement;
+    },
+    assertStatement(path, print) {
+        return ["assert ", ...join([" : "], map(path, print, "expression")), ";"];
+    },
+    switchStatement(path, print) {
+        return join(" ", [
+            "switch",
+            indentInParentheses(call(path, print, "expression")),
+            call(path, print, "switchBlock")
+        ]);
+    },
+    switchBlock(path, print) {
+        const { children } = path.node;
+        const caseKeys = definedKeys(children, [
+            "switchBlockStatementGroup",
+            "switchRule"
+        ]);
+        const cases = caseKeys.length === 1 ? map(path, print, caseKeys[0]) : [];
+        return printBlock(path, cases);
+    },
+    switchBlockStatementGroup(path, print) {
+        var _a, _b;
+        const { children } = path.node;
+        const switchLabel = call(path, print, "switchLabel");
+        if (!children.blockStatements) {
+            return [switchLabel, ":"];
+        }
+        const blockStatements = call(path, print, "blockStatements");
+        const statements = children.blockStatements[0].children.blockStatement;
+        const onlyStatementIsBlock = statements.length === 1 &&
+            ((_b = (_a = statements[0].children.statement) === null || _a === void 0 ? void 0 : _a[0].children.statementWithoutTrailingSubstatement) === null || _b === void 0 ? void 0 : _b[0].children.block) !== undefined;
+        return [
+            switchLabel,
+            ":",
+            onlyStatementIsBlock
+                ? [" ", blockStatements]
+                : indent([hardline, blockStatements])
+        ];
+    },
+    switchLabel(path, print) {
+        var _a, _b;
+        const { children } = path.node;
+        if (!((_b = (_a = children.caseConstant) !== null && _a !== void 0 ? _a : children.casePattern) !== null && _b !== void 0 ? _b : children.Null)) {
+            return "default";
+        }
+        const values = [];
+        if (children.Null) {
+            values.push("null");
+            if (children.Default) {
+                values.push("default");
+            }
+        }
+        else {
+            const valuesKey = onlyDefinedKey(children, [
+                "caseConstant",
+                "casePattern"
+            ]);
+            values.push(...map(path, print, valuesKey));
+        }
+        const hasMultipleValues = values.length > 1;
+        const label = hasMultipleValues
+            ? ["case", indent([line, ...join([",", line], values)])]
+            : ["case ", values[0]];
+        return children.guard
+            ? [
+                group([...label, hasMultipleValues ? line : " "]),
+                call(path, print, "guard")
+            ]
+            : group(label);
+    },
+    switchRule(path, print) {
+        const { children } = path.node;
+        const bodyKey = onlyDefinedKey(children, [
+            "block",
+            "expression",
+            "throwStatement"
+        ]);
+        const parts = [
+            call(path, print, "switchLabel"),
+            " -> ",
+            call(path, print, bodyKey)
+        ];
+        if (children.Semicolon) {
+            parts.push(";");
+        }
+        return parts;
+    },
+    caseConstant: printSingle,
+    casePattern: printSingle,
+    whileStatement(path, print) {
+        const statement = call(path, print, "statement");
+        const hasEmptyStatement = isEmptyStatement(path.node.children.statement[0]);
+        return [
+            "while ",
+            indentInParentheses(call(path, print, "expression")),
+            ...[hasEmptyStatement ? ";" : " ", statement]
+        ];
+    },
+    doStatement(path, print) {
+        const hasEmptyStatement = isEmptyStatement(path.node.children.statement[0]);
+        return [
+            "do",
+            hasEmptyStatement ? ";" : [" ", call(path, print, "statement")],
+            " while ",
+            indentInParentheses(call(path, print, "expression")),
+            ";"
+        ];
+    },
+    forStatement: printSingle,
+    basicForStatement(path, print) {
+        const { children } = path.node;
+        const danglingComments = printDanglingComments(path);
+        if (danglingComments.length) {
+            danglingComments.push(hardline);
+        }
+        const expressions = ["forInit", "expression", "forUpdate"].map(expressionKey => expressionKey in children ? call(path, print, expressionKey) : "");
+        const hasEmptyStatement = isEmptyStatement(children.statement[0]);
+        return [
+            ...danglingComments,
+            "for ",
+            expressions.some(expression => expression !== "")
+                ? indentInParentheses(join([";", line], expressions))
+                : "(;;)",
+            hasEmptyStatement ? ";" : [" ", call(path, print, "statement")]
+        ];
+    },
+    forInit: printSingle,
+    forUpdate: printSingle,
+    statementExpressionList(path, print) {
+        return group(map(path, print, "statementExpression").map((expression, index) => index === 0 ? expression : [",", indent([line, expression])]));
+    },
+    enhancedForStatement(path, print) {
+        var _a;
+        const statementNode = path.node.children.statement[0];
+        const forStatement = [
+            printDanglingComments(path),
+            "for ",
+            "(",
+            call(path, print, "localVariableDeclaration"),
+            " : ",
+            call(path, print, "expression"),
+            ")"
+        ];
+        if (isEmptyStatement(statementNode)) {
+            forStatement.push(";");
+        }
+        else {
+            const hasStatementBlock = ((_a = statementNode.children.statementWithoutTrailingSubstatement) === null || _a === void 0 ? void 0 : _a[0].children.block) !== undefined;
+            const statement = call(path, print, "statement");
+            forStatement.push(hasStatementBlock ? [" ", statement] : indent([line, statement]));
+        }
+        return group(forStatement);
+    },
+    breakStatement(path, print) {
+        return path.node.children.Identifier
+            ? ["break ", call(path, print, "Identifier"), ";"]
+            : "break;";
+    },
+    continueStatement(path, print) {
+        return path.node.children.Identifier
+            ? ["continue ", call(path, print, "Identifier"), ";"]
+            : "continue;";
+    },
+    returnStatement(path, print) {
+        const { children } = path.node;
+        const statement = ["return"];
+        if (children.expression) {
+            statement.push(" ");
+            const expression = call(path, print, "expression");
+            if (isBinaryExpression(children.expression[0])) {
+                statement.push(group([
+                    ifBreak("("),
+                    indent([softline, expression]),
+                    softline,
+                    ifBreak(")")
+                ]));
+            }
+            else {
+                statement.push(expression);
+            }
+        }
+        statement.push(";");
+        return statement;
+    },
+    throwStatement(path, print) {
+        return ["throw ", call(path, print, "expression"), ";"];
+    },
+    synchronizedStatement(path, print) {
+        return [
+            "synchronized ",
+            indentInParentheses(call(path, print, "expression")),
+            " ",
+            call(path, print, "block")
+        ];
+    },
+    tryStatement(path, print) {
+        const { children } = path.node;
+        if (children.tryWithResourcesStatement) {
+            return call(path, print, "tryWithResourcesStatement");
+        }
+        const blocks = ["try", call(path, print, "block")];
+        if (children.catches) {
+            blocks.push(call(path, print, "catches"));
+        }
+        if (children.finally) {
+            blocks.push(call(path, print, "finally"));
+        }
+        return join(" ", blocks);
+    },
+    catches(path, print) {
+        return join(" ", map(path, print, "catchClause"));
+    },
+    catchClause(path, print) {
+        return [
+            "catch ",
+            indentInParentheses(call(path, print, "catchFormalParameter")),
+            " ",
+            call(path, print, "block")
+        ];
+    },
+    catchFormalParameter(path, print) {
+        return join(" ", [
+            ...map(path, print, "variableModifier"),
+            call(path, print, "catchType"),
+            call(path, print, "variableDeclaratorId")
+        ]);
+    },
+    catchType(path, print) {
+        return join([line, "| "], [call(path, print, "unannClassType"), ...map(path, print, "classType")]);
+    },
+    finally(path, print) {
+        return ["finally ", call(path, print, "block")];
+    },
+    tryWithResourcesStatement(path, print) {
+        const { children } = path.node;
+        const blocks = [
+            "try",
+            call(path, print, "resourceSpecification"),
+            call(path, print, "block")
+        ];
+        if (children.catches) {
+            blocks.push(call(path, print, "catches"));
+        }
+        if (children.finally) {
+            blocks.push(call(path, print, "finally"));
+        }
+        return join(" ", blocks);
+    },
+    resourceSpecification(path, print) {
+        const resources = [call(path, print, "resourceList")];
+        if (path.node.children.Semicolon) {
+            resources.push(ifBreak(";"));
+        }
+        return indentInParentheses(resources);
+    },
+    resourceList(path, print) {
+        return join([";", line], map(path, print, "resource"));
+    },
+    resource: printSingle,
+    yieldStatement(path, print) {
+        return ["yield ", call(path, print, "expression"), ";"];
+    },
+    variableAccess: printSingle
+};

frontend/src/common/prettier/plugins/java/printers/classes.d.ts

@@ -0,0 +1,157 @@
+import type { ClassBodyCstNode, EnumBodyDeclarationsCstNode } from "java-parser";
+import type { AstPath } from "prettier";
+import { builders } from "prettier/doc";
+import { printClassPermits, printClassType, printSingle, type JavaPrintFn } from "./helpers.js";
+declare const _default: {
+    classDeclaration(path: AstPath<import("java-parser").ClassDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    normalClassDeclaration(path: AstPath<import("java-parser").NormalClassDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    classModifier: typeof printSingle;
+    typeParameters(path: AstPath<import("java-parser").TypeParametersCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group;
+    typeParameterList(path: AstPath<import("java-parser").TypeParameterListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    classExtends(path: AstPath<import("java-parser").ClassExtendsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    classImplements(path: AstPath<import("java-parser").ClassImplementsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group;
+    classPermits: typeof printClassPermits;
+    interfaceTypeList(path: AstPath<import("java-parser").InterfaceTypeListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group;
+    classBody(path: AstPath<ClassBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    classBodyDeclaration: typeof printSingle;
+    classMemberDeclaration(path: AstPath<import("java-parser").ClassMemberDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    fieldDeclaration(path: AstPath<import("java-parser").FieldDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    fieldModifier: typeof printSingle;
+    variableDeclaratorList(path: AstPath<import("java-parser").VariableDeclaratorListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | builders.Doc[];
+    variableDeclarator(path: AstPath<import("java-parser").VariableDeclaratorCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    variableDeclaratorId(path: AstPath<import("java-parser").VariableDeclaratorIdCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    variableInitializer: typeof printSingle;
+    unannType: typeof printSingle;
+    unannPrimitiveTypeWithOptionalDimsSuffix(path: AstPath<import("java-parser").UnannPrimitiveTypeWithOptionalDimsSuffixCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    unannPrimitiveType: typeof printSingle;
+    unannReferenceType(path: AstPath<import("java-parser").UnannReferenceTypeCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    unannClassOrInterfaceType: typeof printSingle;
+    unannClassType: typeof printClassType;
+    unannInterfaceType: typeof printSingle;
+    unannTypeVariable: typeof printSingle;
+    methodDeclaration(path: AstPath<import("java-parser").MethodDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    methodModifier: typeof printSingle;
+    methodHeader(path: AstPath<import("java-parser").MethodHeaderCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group;
+    result: typeof printSingle;
+    methodDeclarator(path: AstPath<import("java-parser").MethodDeclaratorCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    receiverParameter(path: AstPath<import("java-parser").ReceiverParameterCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    formalParameterList(path: AstPath<import("java-parser").FormalParameterListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    formalParameter: typeof printSingle;
+    variableParaRegularParameter(path: AstPath<import("java-parser").VariableParaRegularParameterCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    variableArityParameter(path: AstPath<import("java-parser").VariableArityParameterCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    variableModifier: typeof printSingle;
+    throws(path: AstPath<import("java-parser").ThrowsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    exceptionTypeList(path: AstPath<import("java-parser").ExceptionTypeListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    exceptionType: typeof printSingle;
+    methodBody: typeof printSingle;
+    instanceInitializer: typeof printSingle;
+    staticInitializer(path: AstPath<import("java-parser").StaticInitializerCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    constructorDeclaration(path: AstPath<import("java-parser").ConstructorDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    constructorModifier: typeof printSingle;
+    constructorDeclarator(path: AstPath<import("java-parser").ConstructorDeclaratorCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    simpleTypeName: typeof printSingle;
+    constructorBody(path: AstPath<import("java-parser").ConstructorBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    explicitConstructorInvocation: typeof printSingle;
+    unqualifiedExplicitConstructorInvocation(path: AstPath<import("java-parser").UnqualifiedExplicitConstructorInvocationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    qualifiedExplicitConstructorInvocation(path: AstPath<import("java-parser").QualifiedExplicitConstructorInvocationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    enumDeclaration(path: AstPath<import("java-parser").EnumDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    enumBody(path: AstPath<import("java-parser").EnumBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn, options: import("./helpers.js").JavaParserOptions): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    enumConstantList(path: AstPath<import("java-parser").EnumConstantListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    enumConstant(path: AstPath<import("java-parser").EnumConstantCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    enumConstantModifier: typeof printSingle;
+    enumBodyDeclarations(path: AstPath<EnumBodyDeclarationsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    recordDeclaration(path: AstPath<import("java-parser").RecordDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    recordHeader(path: AstPath<import("java-parser").RecordHeaderCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "()";
+    recordComponentList(path: AstPath<import("java-parser").RecordComponentListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    recordComponent(path: AstPath<import("java-parser").RecordComponentCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group;
+    variableArityRecordComponent(path: AstPath<import("java-parser").VariableArityRecordComponentCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    recordComponentModifier: typeof printSingle;
+    recordBody(path: AstPath<import("java-parser").RecordBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    recordBodyDeclaration: typeof printSingle;
+    compactConstructorDeclaration(path: AstPath<import("java-parser").CompactConstructorDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/classes.js

@@ -0,0 +1,446 @@
+import { builders } from "prettier/doc";
+import { call, each, hasDeclarationAnnotations, hasLeadingComments, indentInParentheses, isBinaryExpression, lineEndWithComments, lineStartWithComments, map, onlyDefinedKey, printBlock, printClassPermits, printClassType, printDanglingComments, printList, printSingle, printWithModifiers } from "./helpers.js";
+const { group, hardline, indent, indentIfBreak, join, line, softline } = builders;
+export default {
+    classDeclaration(path, print) {
+        const declarationKey = onlyDefinedKey(path.node.children, [
+            "enumDeclaration",
+            "normalClassDeclaration",
+            "recordDeclaration"
+        ]);
+        const declaration = call(path, print, declarationKey);
+        return printWithModifiers(path, print, "classModifier", declaration, true);
+    },
+    normalClassDeclaration(path, print) {
+        const { classExtends, classImplements, classPermits, typeParameters } = path.node.children;
+        const header = ["class ", call(path, print, "typeIdentifier")];
+        if (typeParameters) {
+            header.push(call(path, print, "typeParameters"));
+        }
+        if (classExtends) {
+            header.push(indent([line, call(path, print, "classExtends")]));
+        }
+        if (classImplements) {
+            header.push(indent([line, call(path, print, "classImplements")]));
+        }
+        if (classPermits) {
+            header.push(indent([line, call(path, print, "classPermits")]));
+        }
+        return [group(header), " ", call(path, print, "classBody")];
+    },
+    classModifier: printSingle,
+    typeParameters(path, print) {
+        return group([
+            "<",
+            indent([softline, call(path, print, "typeParameterList")]),
+            softline,
+            ">"
+        ]);
+    },
+    typeParameterList(path, print) {
+        return printList(path, print, "typeParameter");
+    },
+    classExtends(path, print) {
+        return ["extends ", call(path, print, "classType")];
+    },
+    classImplements(path, print) {
+        return group([
+            "implements",
+            indent([line, call(path, print, "interfaceTypeList")])
+        ]);
+    },
+    classPermits: printClassPermits,
+    interfaceTypeList(path, print) {
+        return group(printList(path, print, "interfaceType"));
+    },
+    classBody(path, print) {
+        return printBlock(path, printClassBodyDeclarations(path, print));
+    },
+    classBodyDeclaration: printSingle,
+    classMemberDeclaration(path, print) {
+        const { children } = path.node;
+        return children.Semicolon
+            ? ""
+            : call(path, print, onlyDefinedKey(children));
+    },
+    fieldDeclaration(path, print) {
+        const declaration = [
+            call(path, print, "unannType"),
+            " ",
+            call(path, print, "variableDeclaratorList"),
+            ";"
+        ];
+        return printWithModifiers(path, print, "fieldModifier", declaration);
+    },
+    fieldModifier: printSingle,
+    variableDeclaratorList(path, print) {
+        var _a;
+        const declarators = map(path, print, "variableDeclarator");
+        return declarators.length > 1 &&
+            path.node.children.variableDeclarator.some(({ children }) => children.Equals)
+            ? group(indent(join([",", line], declarators)), {
+                shouldBreak: ((_a = path.getNode(4)) === null || _a === void 0 ? void 0 : _a.name) !== "forInit"
+            })
+            : join(", ", declarators);
+    },
+    variableDeclarator(path, print) {
+        var _a, _b;
+        const { children } = path.node;
+        const variableInitializer = (_a = children.variableInitializer) === null || _a === void 0 ? void 0 : _a[0];
+        const declaratorId = call(path, print, "variableDeclaratorId");
+        if (!variableInitializer) {
+            return declaratorId;
+        }
+        const expression = (_b = variableInitializer.children.expression) === null || _b === void 0 ? void 0 : _b[0];
+        const declarator = [declaratorId, " ", call(path, print, "Equals")];
+        const initializer = call(path, print, "variableInitializer");
+        if (hasLeadingComments(variableInitializer) ||
+            (expression && isBinaryExpression(expression))) {
+            declarator.push(group(indent([line, initializer])));
+        }
+        else {
+            const groupId = Symbol("assignment");
+            declarator.push(group(indent(line), { id: groupId }), indentIfBreak(initializer, { groupId }));
+        }
+        return group(declarator);
+    },
+    variableDeclaratorId(path, print) {
+        const { dims, Underscore } = path.node.children;
+        if (Underscore) {
+            return "_";
+        }
+        const identifier = call(path, print, "Identifier");
+        return dims ? [identifier, call(path, print, "dims")] : identifier;
+    },
+    variableInitializer: printSingle,
+    unannType: printSingle,
+    unannPrimitiveTypeWithOptionalDimsSuffix(path, print) {
+        const type = call(path, print, "unannPrimitiveType");
+        return path.node.children.dims ? [type, call(path, print, "dims")] : type;
+    },
+    unannPrimitiveType: printSingle,
+    unannReferenceType(path, print) {
+        const type = call(path, print, "unannClassOrInterfaceType");
+        return path.node.children.dims ? [type, call(path, print, "dims")] : type;
+    },
+    unannClassOrInterfaceType: printSingle,
+    unannClassType: printClassType,
+    unannInterfaceType: printSingle,
+    unannTypeVariable: printSingle,
+    methodDeclaration(path, print) {
+        const declaration = [
+            call(path, print, "methodHeader"),
+            path.node.children.methodBody[0].children.Semicolon ? "" : " ",
+            call(path, print, "methodBody")
+        ];
+        return printWithModifiers(path, print, "methodModifier", declaration);
+    },
+    methodModifier: printSingle,
+    methodHeader(path, print) {
+        const { typeParameters, annotation, throws } = path.node.children;
+        const header = [];
+        if (typeParameters) {
+            header.push(call(path, print, "typeParameters"));
+        }
+        if (annotation) {
+            header.push(join(line, map(path, print, "annotation")));
+        }
+        header.push(call(path, print, "result"), call(path, print, "methodDeclarator"));
+        return throws
+            ? group([
+                ...join(" ", header),
+                group(indent([line, call(path, print, "throws")]))
+            ])
+            : group(join(" ", header));
+    },
+    result: printSingle,
+    methodDeclarator(path, print) {
+        const { dims, formalParameterList, receiverParameter } = path.node.children;
+        const declarator = [call(path, print, "Identifier")];
+        const parameters = [];
+        if (receiverParameter) {
+            parameters.push(call(path, print, "receiverParameter"));
+        }
+        if (formalParameterList) {
+            parameters.push(call(path, print, "formalParameterList"));
+        }
+        const items = parameters.length
+            ? join([",", line], parameters)
+            : printDanglingComments(path);
+        declarator.push(items.length ? indentInParentheses(items) : "()");
+        if (dims) {
+            declarator.push(call(path, print, "dims"));
+        }
+        return declarator;
+    },
+    receiverParameter(path, print) {
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            call(path, print, "unannType"),
+            path.node.children.Identifier
+                ? [call(path, print, "Identifier"), ".this"]
+                : "this"
+        ]);
+    },
+    formalParameterList(path, print) {
+        return printList(path, print, "formalParameter");
+    },
+    formalParameter: printSingle,
+    variableParaRegularParameter(path, print) {
+        return join(" ", [
+            ...map(path, print, "variableModifier"),
+            call(path, print, "unannType"),
+            call(path, print, "variableDeclaratorId")
+        ]);
+    },
+    variableArityParameter(path, print) {
+        const type = join(" ", [
+            ...map(path, print, "variableModifier"),
+            call(path, print, "unannType"),
+            ...map(path, print, "annotation")
+        ]);
+        return [type, "... ", call(path, print, "Identifier")];
+    },
+    variableModifier: printSingle,
+    throws(path, print) {
+        return ["throws ", call(path, print, "exceptionTypeList")];
+    },
+    exceptionTypeList(path, print) {
+        return join(", ", map(path, print, "exceptionType"));
+    },
+    exceptionType: printSingle,
+    methodBody: printSingle,
+    instanceInitializer: printSingle,
+    staticInitializer(path, print) {
+        return ["static ", call(path, print, "block")];
+    },
+    constructorDeclaration(path, print) {
+        const declaration = [call(path, print, "constructorDeclarator")];
+        if (path.node.children.throws) {
+            declaration.push(group(indent([line, call(path, print, "throws")])));
+        }
+        declaration.push(" ", call(path, print, "constructorBody"));
+        return printWithModifiers(path, print, "constructorModifier", declaration, true);
+    },
+    constructorModifier: printSingle,
+    constructorDeclarator(path, print) {
+        const { children } = path.node;
+        const parameters = [];
+        if (children.receiverParameter) {
+            parameters.push(call(path, print, "receiverParameter"));
+        }
+        if (children.formalParameterList) {
+            parameters.push(call(path, print, "formalParameterList"));
+        }
+        const header = [call(path, print, "simpleTypeName")];
+        header.push(parameters.length
+            ? indentInParentheses(join([",", line], parameters))
+            : "()");
+        return children.typeParameters
+            ? [call(path, print, "typeParameters"), " ", ...header]
+            : header;
+    },
+    simpleTypeName: printSingle,
+    constructorBody(path, print) {
+        const { children } = path.node;
+        const statements = [];
+        if (children.explicitConstructorInvocation) {
+            statements.push(call(path, print, "explicitConstructorInvocation"));
+        }
+        if (children.blockStatements) {
+            statements.push(call(path, print, "blockStatements"));
+        }
+        return printBlock(path, statements);
+    },
+    explicitConstructorInvocation: printSingle,
+    unqualifiedExplicitConstructorInvocation(path, print) {
+        const { children } = path.node;
+        const invocation = [];
+        if (children.typeArguments) {
+            invocation.push(call(path, print, "typeArguments"));
+        }
+        invocation.push(children.Super ? "super" : "this");
+        if (children.argumentList) {
+            invocation.push(group(["(", call(path, print, "argumentList"), ")"]));
+        }
+        else {
+            invocation.push(indentInParentheses(printDanglingComments(path), { shouldBreak: true }));
+        }
+        invocation.push(";");
+        return invocation;
+    },
+    qualifiedExplicitConstructorInvocation(path, print) {
+        const { children } = path.node;
+        const invocation = [call(path, print, "expressionName"), "."];
+        if (children.typeArguments) {
+            invocation.push(call(path, print, "typeArguments"));
+        }
+        invocation.push("super");
+        if (children.argumentList) {
+            invocation.push(group(["(", call(path, print, "argumentList"), ")"]));
+        }
+        else {
+            invocation.push(indentInParentheses(printDanglingComments(path), { shouldBreak: true }));
+        }
+        invocation.push(";");
+        return invocation;
+    },
+    enumDeclaration(path, print) {
+        const header = ["enum", call(path, print, "typeIdentifier")];
+        if (path.node.children.classImplements) {
+            header.push(call(path, print, "classImplements"));
+        }
+        return join(" ", [...header, call(path, print, "enumBody")]);
+    },
+    enumBody(path, print, options) {
+        var _a;
+        const { children } = path.node;
+        const contents = [];
+        const hasNonEmptyDeclaration = ((_a = children.enumBodyDeclarations) !== null && _a !== void 0 ? _a : [])
+            .flatMap(({ children }) => { var _a; return (_a = children.classBodyDeclaration) !== null && _a !== void 0 ? _a : []; })
+            .some(({ children }) => { var _a; return !((_a = children.classMemberDeclaration) === null || _a === void 0 ? void 0 : _a[0].children.Semicolon); });
+        if (children.enumConstantList) {
+            contents.push(call(path, print, "enumConstantList"));
+            if (!hasNonEmptyDeclaration && options.trailingComma !== "none") {
+                contents.push(",");
+            }
+        }
+        if (hasNonEmptyDeclaration) {
+            contents.push(";", hardline, call(path, print, "enumBodyDeclarations"));
+        }
+        return printBlock(path, contents.length ? [contents] : []);
+    },
+    enumConstantList(path, print) {
+        return join([",", hardline], map(path, constantPath => {
+            const constant = print(constantPath);
+            const { node, previous } = constantPath;
+            return !previous ||
+                lineStartWithComments(node) <= lineEndWithComments(previous) + 1
+                ? constant
+                : [hardline, constant];
+        }, "enumConstant"));
+    },
+    enumConstant(path, print) {
+        const { argumentList, classBody } = path.node.children;
+        const initializer = [call(path, print, "Identifier")];
+        if (argumentList) {
+            initializer.push(group(["(", call(path, print, "argumentList"), ")"]));
+        }
+        if (classBody) {
+            initializer.push(" ", call(path, print, "classBody"));
+        }
+        return printWithModifiers(path, print, "enumConstantModifier", initializer);
+    },
+    enumConstantModifier: printSingle,
+    enumBodyDeclarations(path, print) {
+        return join(hardline, printClassBodyDeclarations(path, print));
+    },
+    recordDeclaration(path, print) {
+        const { children } = path.node;
+        const header = ["record ", call(path, print, "typeIdentifier")];
+        if (children.typeParameters) {
+            header.push(call(path, print, "typeParameters"));
+        }
+        header.push(call(path, print, "recordHeader"));
+        if (children.classImplements) {
+            header.push(" ", call(path, print, "classImplements"));
+        }
+        return [group(header), " ", call(path, print, "recordBody")];
+    },
+    recordHeader(path, print) {
+        return path.node.children.recordComponentList
+            ? indentInParentheses(call(path, print, "recordComponentList"))
+            : indentInParentheses(printDanglingComments(path), { shouldBreak: true });
+    },
+    recordComponentList(path, print) {
+        return join([",", line], map(path, componentPath => {
+            const { node, previous } = componentPath;
+            const blankLine = previous &&
+                lineStartWithComments(node) > lineEndWithComments(previous) + 1;
+            const component = print(componentPath);
+            return blankLine ? [softline, component] : component;
+        }, "recordComponent"));
+    },
+    recordComponent(path, print) {
+        const { children } = path.node;
+        const component = [call(path, print, "unannType")];
+        if (children.Identifier ||
+            children.variableArityRecordComponent[0].children.annotation) {
+            component.push(" ");
+        }
+        const suffixKey = onlyDefinedKey(children, [
+            "Identifier",
+            "variableArityRecordComponent"
+        ]);
+        component.push(call(path, print, suffixKey));
+        return group(join(line, [...map(path, print, "recordComponentModifier"), component]));
+    },
+    variableArityRecordComponent(path, print) {
+        return [
+            ...join(" ", map(path, print, "annotation")),
+            "... ",
+            call(path, print, "Identifier")
+        ];
+    },
+    recordComponentModifier: printSingle,
+    recordBody(path, print) {
+        const declarations = [];
+        let previousRequiresPadding = false;
+        each(path, declarationPath => {
+            var _a, _b, _c, _d;
+            const declaration = print(declarationPath);
+            if (declaration === "") {
+                return;
+            }
+            const { node, previous } = declarationPath;
+            const fieldDeclaration = (_c = (_b = (_a = node.children.classBodyDeclaration) === null || _a === void 0 ? void 0 : _a[0].children.classMemberDeclaration) === null || _b === void 0 ? void 0 : _b[0].children.fieldDeclaration) === null || _c === void 0 ? void 0 : _c[0].children;
+            const currentRequiresPadding = !fieldDeclaration ||
+                hasDeclarationAnnotations((_d = fieldDeclaration.fieldModifier) !== null && _d !== void 0 ? _d : []);
+            const blankLine = declarations.length > 0 &&
+                (previousRequiresPadding ||
+                    currentRequiresPadding ||
+                    lineStartWithComments(node) > lineEndWithComments(previous) + 1);
+            declarations.push(blankLine ? [hardline, declaration] : declaration);
+            previousRequiresPadding = currentRequiresPadding;
+        }, "recordBodyDeclaration");
+        return printBlock(path, declarations);
+    },
+    recordBodyDeclaration: printSingle,
+    compactConstructorDeclaration(path, print) {
+        const declaration = [
+            call(path, print, "simpleTypeName"),
+            " ",
+            call(path, print, "constructorBody")
+        ];
+        return printWithModifiers(path, print, "constructorModifier", declaration, true);
+    }
+};
+function printClassBodyDeclarations(path, print) {
+    var _a;
+    if (!path.node.children.classBodyDeclaration) {
+        return [];
+    }
+    const declarations = [];
+    let previousRequiresPadding = path.node.name === "enumBodyDeclarations" ||
+        ((_a = path.grandparent) === null || _a === void 0 ? void 0 : _a.name) ===
+            "normalClassDeclaration";
+    each(path, declarationPath => {
+        var _a, _b, _c;
+        const declaration = print(declarationPath);
+        if (declaration === "") {
+            return;
+        }
+        const { node, previous } = declarationPath;
+        const fieldDeclaration = (_b = (_a = node.children.classMemberDeclaration) === null || _a === void 0 ? void 0 : _a[0].children.fieldDeclaration) === null || _b === void 0 ? void 0 : _b[0].children;
+        const currentRequiresPadding = fieldDeclaration
+            ? hasDeclarationAnnotations((_c = fieldDeclaration.fieldModifier) !== null && _c !== void 0 ? _c : [])
+            : true;
+        const blankLine = previousRequiresPadding ||
+            (declarations.length > 0 &&
+                (currentRequiresPadding ||
+                    lineStartWithComments(node) > lineEndWithComments(previous) + 1));
+        declarations.push(blankLine ? [hardline, declaration] : declaration);
+        previousRequiresPadding = currentRequiresPadding;
+    }, "classBodyDeclaration");
+    return declarations;
+}

frontend/src/common/prettier/plugins/java/printers/expressions.d.ts

@@ -0,0 +1,134 @@
+import type { StringTemplateCstNode, TextBlockTemplateCstNode } from "java-parser";
+import type { AstPath } from "prettier";
+import { builders } from "prettier/doc";
+import type { JavaComment } from "../comments.js";
+import { printSingle, type JavaPrintFn } from "./helpers.js";
+declare const _default: {
+    expression: typeof printSingle;
+    lambdaExpression(path: AstPath<import("java-parser").LambdaExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn, _: import("./helpers.js").JavaParserOptions, args?: unknown): builders.Doc[];
+    lambdaParameters(path: AstPath<import("java-parser").LambdaParametersCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn, options: import("./helpers.js").JavaParserOptions): builders.Doc;
+    lambdaParametersWithBraces(path: AstPath<import("java-parser").LambdaParametersWithBracesCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn, options: import("./helpers.js").JavaParserOptions): builders.Doc;
+    lambdaParameterList: typeof printSingle;
+    conciseLambdaParameterList(path: AstPath<import("java-parser").ConciseLambdaParameterListCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    normalLambdaParameterList(path: AstPath<import("java-parser").NormalLambdaParameterListCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    normalLambdaParameter: typeof printSingle;
+    regularLambdaParameter(path: AstPath<import("java-parser").RegularLambdaParameterCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    lambdaParameterType: typeof printSingle;
+    conciseLambdaParameter: typeof printSingle;
+    lambdaBody: typeof printSingle;
+    conditionalExpression(path: AstPath<import("java-parser").ConditionalExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    binaryExpression(path: AstPath<import("java-parser").BinaryExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn, options: import("./helpers.js").JavaParserOptions): builders.Doc;
+    unaryExpression(path: AstPath<import("java-parser").UnaryExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    unaryExpressionNotPlusMinus(path: AstPath<import("java-parser").UnaryExpressionNotPlusMinusCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    primary(path: AstPath<import("java-parser").PrimaryCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    primaryPrefix: typeof printSingle;
+    primarySuffix(path: AstPath<import("java-parser").PrimarySuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    fqnOrRefType(path: AstPath<import("java-parser").FqnOrRefTypeCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn, _: import("./helpers.js").JavaParserOptions, args: unknown): builders.Doc[];
+    fqnOrRefTypePartFirst(path: AstPath<import("java-parser").FqnOrRefTypePartFirstCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    fqnOrRefTypePartRest(path: AstPath<import("java-parser").FqnOrRefTypePartRestCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    fqnOrRefTypePartCommon(path: AstPath<import("java-parser").FqnOrRefTypePartCommonCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    parenthesisExpression(path: AstPath<import("java-parser").ParenthesisExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "()" | (string | builders.Indent)[];
+    castExpression: typeof printSingle;
+    primitiveCastExpression(path: AstPath<import("java-parser").PrimitiveCastExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    referenceTypeCastExpression(path: AstPath<import("java-parser").ReferenceTypeCastExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    newExpression: typeof printSingle;
+    unqualifiedClassInstanceCreationExpression(path: AstPath<import("java-parser").UnqualifiedClassInstanceCreationExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    classOrInterfaceTypeToInstantiate(path: AstPath<import("java-parser").ClassOrInterfaceTypeToInstantiateCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    typeArgumentsOrDiamond: typeof printSingle;
+    diamond(): string;
+    methodInvocationSuffix(path: AstPath<import("java-parser").MethodInvocationSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | "()";
+    argumentList(path: AstPath<import("java-parser").ArgumentListCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Group | (builders.Indent | builders.Softline)[] | (builders.BreakParent | builders.Group)[];
+    arrayCreationExpression(path: AstPath<import("java-parser").ArrayCreationExpressionCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    arrayCreationExpressionWithoutInitializerSuffix(path: AstPath<import("java-parser").ArrayCreationExpressionWithoutInitializerSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    arrayCreationWithInitializerSuffix(path: AstPath<import("java-parser").ArrayCreationWithInitializerSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    dimExprs(path: AstPath<import("java-parser").DimExprsCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    dimExpr(path: AstPath<import("java-parser").DimExprCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    classLiteralSuffix(path: AstPath<import("java-parser").ClassLiteralSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    arrayAccessSuffix(path: AstPath<import("java-parser").ArrayAccessSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    methodReferenceSuffix(path: AstPath<import("java-parser").MethodReferenceSuffixCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    templateArgument: typeof printSingle;
+    template: typeof printSingle;
+    stringTemplate(path: AstPath<StringTemplateCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Indent;
+    textBlockTemplate(path: AstPath<TextBlockTemplateCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Indent;
+    embeddedExpression: typeof printSingle;
+    pattern: typeof printSingle;
+    typePattern: typeof printSingle;
+    recordPattern(path: AstPath<import("java-parser").RecordPatternCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    componentPatternList(path: AstPath<import("java-parser").ComponentPatternListCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    componentPattern: typeof printSingle;
+    matchAllPattern: typeof printSingle;
+    guard(path: AstPath<import("java-parser").GuardCstNode & {
+        comments?: JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/expressions.js

@@ -0,0 +1,598 @@
+import { builders, utils } from "prettier/doc";
+import { call, definedKeys, each, findBaseIndent, flatMap, hasLeadingComments, indentInParentheses, isBinaryExpression, isNonTerminal, isTerminal, map, onlyDefinedKey, printDanglingComments, printList, printName, printSingle } from "./helpers.js";
+const { breakParent, conditionalGroup, group, hardline, ifBreak, indent, indentIfBreak, join, line, lineSuffixBoundary, softline } = builders;
+const { removeLines, willBreak } = utils;
+export default {
+    expression: printSingle,
+    lambdaExpression(path, print, _, args = {}) {
+        var _a;
+        const hug = (_a = args.hug) !== null && _a !== void 0 ? _a : false;
+        const parameters = call(path, print, "lambdaParameters");
+        const expression = [hug ? removeLines(parameters) : parameters, " ->"];
+        const lambdaExpression = path.node.children.lambdaBody[0].children.expression;
+        const body = call(path, print, "lambdaBody");
+        if (lambdaExpression) {
+            const suffix = indent([line, body]);
+            expression.push(group(hug ? [suffix, softline] : suffix));
+        }
+        else {
+            expression.push(" ", body);
+        }
+        return expression;
+    },
+    lambdaParameters(path, print, options) {
+        const parameters = printSingle(path, print);
+        return !path.node.children.lambdaParametersWithBraces &&
+            options.arrowParens === "always"
+            ? ["(", parameters, ")"]
+            : parameters;
+    },
+    lambdaParametersWithBraces(path, print, options) {
+        var _a;
+        const { lambdaParameterList } = path.node.children;
+        if (!lambdaParameterList) {
+            return "()";
+        }
+        const { conciseLambdaParameterList, normalLambdaParameterList } = lambdaParameterList[0].children;
+        const parameterCount = ((_a = conciseLambdaParameterList === null || conciseLambdaParameterList === void 0 ? void 0 : conciseLambdaParameterList[0].children.conciseLambdaParameter) !== null && _a !== void 0 ? _a : normalLambdaParameterList === null || normalLambdaParameterList === void 0 ? void 0 : normalLambdaParameterList[0].children.normalLambdaParameter).length;
+        const parameters = call(path, print, "lambdaParameterList");
+        if (parameterCount > 1) {
+            return indentInParentheses(parameters);
+        }
+        return conciseLambdaParameterList && options.arrowParens === "avoid"
+            ? parameters
+            : ["(", parameters, ")"];
+    },
+    lambdaParameterList: printSingle,
+    conciseLambdaParameterList(path, print) {
+        return printList(path, print, "conciseLambdaParameter");
+    },
+    normalLambdaParameterList(path, print) {
+        return printList(path, print, "normalLambdaParameter");
+    },
+    normalLambdaParameter: printSingle,
+    regularLambdaParameter(path, print) {
+        return join(" ", [
+            ...map(path, print, "variableModifier"),
+            call(path, print, "lambdaParameterType"),
+            call(path, print, "variableDeclaratorId")
+        ]);
+    },
+    lambdaParameterType: printSingle,
+    conciseLambdaParameter: printSingle,
+    lambdaBody: printSingle,
+    conditionalExpression(path, print) {
+        var _a;
+        const binaryExpression = call(path, print, "binaryExpression");
+        if (!path.node.children.QuestionMark) {
+            return binaryExpression;
+        }
+        const expressions = map(path, print, "expression");
+        const contents = indent(join(line, [
+            binaryExpression,
+            ["? ", expressions[0]],
+            [": ", expressions[1]]
+        ]));
+        const isNestedTernary = ((_a = path.getNode(4)) === null || _a === void 0 ? void 0 : _a.name) ===
+            "conditionalExpression";
+        return isNestedTernary ? contents : group(contents);
+    },
+    binaryExpression(path, print, options) {
+        var _a, _b;
+        const { children } = path.node;
+        const operands = flatMap(path, print, definedKeys(children, [
+            "expression",
+            "pattern",
+            "referenceType",
+            "unaryExpression"
+        ]));
+        const operators = flatMap(path, operatorPath => {
+            const { node } = operatorPath;
+            let image;
+            if (isTerminal(node)) {
+                image = node.image;
+            }
+            else if (node.children.Less) {
+                image = "<<";
+            }
+            else {
+                image = node.children.Greater.length === 2 ? ">>" : ">>>";
+            }
+            return { image, doc: print(operatorPath) };
+        }, definedKeys(children, [
+            "AssignmentOperator",
+            "BinaryOperator",
+            "Instanceof",
+            "shiftOperator"
+        ]));
+        const hasNonAssignmentOperators = (operators.length > 0 && !children.AssignmentOperator) ||
+            (children.expression !== undefined &&
+                isBinaryExpression(children.expression[0]));
+        const isInList = ((_a = path.getNode(4)) === null || _a === void 0 ? void 0 : _a.name) === "elementValue" ||
+            ((_b = path.getNode(6)) === null || _b === void 0 ? void 0 : _b.name) === "argumentList";
+        return binary(operands, operators, {
+            hasNonAssignmentOperators,
+            isInList,
+            isRoot: true,
+            operatorPosition: options.experimentalOperatorPosition
+        });
+    },
+    unaryExpression(path, print) {
+        return [
+            ...map(path, print, "UnaryPrefixOperator"),
+            call(path, print, "primary"),
+            ...map(path, print, "UnarySuffixOperator")
+        ];
+    },
+    unaryExpressionNotPlusMinus(path, print) {
+        const { children } = path.node;
+        const expression = [];
+        if (children.UnaryPrefixOperatorNotPlusMinus) {
+            expression.push(...map(path, print, "UnaryPrefixOperatorNotPlusMinus"));
+        }
+        expression.push(call(path, print, "primary"));
+        if (children.UnarySuffixOperator) {
+            expression.push(...map(path, print, "UnarySuffixOperator"));
+        }
+        return join(" ", expression);
+    },
+    primary(path, print) {
+        var _a, _b;
+        const { children } = path.node;
+        if (!children.primarySuffix) {
+            return call(path, print, "primaryPrefix");
+        }
+        const methodInvocations = children.primarySuffix
+            .filter(({ children }) => children.methodInvocationSuffix)
+            .map(({ children }) => children.methodInvocationSuffix[0].children);
+        const hasLambdaMethodParameter = methodInvocations.some(({ argumentList }) => argumentList === null || argumentList === void 0 ? void 0 : argumentList[0].children.expression.some(({ children }) => children.lambdaExpression));
+        const prefixIsCallExpression = children.primaryPrefix[0].children.newExpression;
+        const callExpressionCount = methodInvocations.length +
+            (prefixIsCallExpression ? 1 : 0) +
+            children.primarySuffix.filter(({ children }) => children.unqualifiedClassInstanceCreationExpression).length;
+        const fqnOrRefType = (_a = children.primaryPrefix[0].children.fqnOrRefType) === null || _a === void 0 ? void 0 : _a[0].children;
+        const prefixIsMethodInvocation = (fqnOrRefType === null || fqnOrRefType === void 0 ? void 0 : fqnOrRefType.fqnOrRefTypePartRest) !== undefined &&
+            ((_b = children.primarySuffix) === null || _b === void 0 ? void 0 : _b[0].children.methodInvocationSuffix) !== undefined;
+        const prefixIsStaticMethodInvocation = prefixIsMethodInvocation && isCapitalizedIdentifier(fqnOrRefType);
+        const prefixIsInstanceMethodInvocation = prefixIsMethodInvocation && !prefixIsStaticMethodInvocation;
+        const mustBreakForCallExpressions = methodInvocations.length > 2 && hasLambdaMethodParameter;
+        const separator = mustBreakForCallExpressions ? hardline : softline;
+        const prefix = [
+            call(path, prefixPath => print(prefixPath, {
+                lastSeparator: prefixIsStaticMethodInvocation ||
+                    (prefixIsInstanceMethodInvocation && callExpressionCount === 1)
+                    ? ""
+                    : separator
+            }), "primaryPrefix")
+        ];
+        const canBreakForCallExpressions = callExpressionCount > 2 ||
+            (callExpressionCount === 2 && prefixIsInstanceMethodInvocation) ||
+            willBreak(prefix);
+        const suffixes = [];
+        each(path, suffixPath => {
+            const { node, previous } = suffixPath;
+            const suffix = print(suffixPath);
+            if (node.children.Dot) {
+                if ((canBreakForCallExpressions &&
+                    ((!previous && prefixIsCallExpression) ||
+                        (previous === null || previous === void 0 ? void 0 : previous.children.methodInvocationSuffix) ||
+                        (previous === null || previous === void 0 ? void 0 : previous.children.unqualifiedClassInstanceCreationExpression))) ||
+                    (!node.children.templateArgument && willBreak(suffix))) {
+                    suffixes.push(separator);
+                }
+                suffixes.push(suffix);
+            }
+            else if (previous) {
+                suffixes.push(suffix);
+            }
+            else {
+                prefix.push(prefixIsInstanceMethodInvocation && callExpressionCount >= 2
+                    ? indent(suffix)
+                    : suffix);
+            }
+        }, "primarySuffix");
+        const hasSuffixComments = children.primarySuffix.some(suffix => hasLeadingComments(suffix));
+        return group(canBreakForCallExpressions || hasSuffixComments
+            ? [prefix, indent(suffixes)]
+            : [prefix, ...suffixes]);
+    },
+    primaryPrefix: printSingle,
+    primarySuffix(path, print) {
+        const { children } = path.node;
+        if (!children.Dot) {
+            return printSingle(path, print);
+        }
+        const suffix = ["."];
+        if (children.This) {
+            suffix.push("this");
+        }
+        else if (children.Identifier) {
+            if (children.typeArguments) {
+                suffix.push(call(path, print, "typeArguments"));
+            }
+            suffix.push(call(path, print, "Identifier"));
+        }
+        else {
+            const suffixKey = onlyDefinedKey(children, [
+                "templateArgument",
+                "unqualifiedClassInstanceCreationExpression"
+            ]);
+            suffix.push(call(path, print, suffixKey));
+        }
+        return suffix;
+    },
+    fqnOrRefType(path, print, _, args) {
+        var _a;
+        const lastSeparator = (_a = args.lastSeparator) !== null && _a !== void 0 ? _a : "";
+        const fqnOrRefType = [
+            call(path, print, "fqnOrRefTypePartFirst"),
+            ...map(path, partPath => {
+                const part = print(partPath);
+                return partPath.isLast
+                    ? [willBreak(part) ? hardline : lastSeparator, part]
+                    : part;
+            }, "fqnOrRefTypePartRest")
+        ];
+        fqnOrRefType.push(indent(fqnOrRefType.pop()));
+        return path.node.children.dims
+            ? [fqnOrRefType, call(path, print, "dims")]
+            : fqnOrRefType;
+    },
+    fqnOrRefTypePartFirst(path, print) {
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            call(path, print, "fqnOrRefTypePartCommon")
+        ]);
+    },
+    fqnOrRefTypePartRest(path, print) {
+        const common = call(path, print, "fqnOrRefTypePartCommon");
+        const type = path.node.children.typeArguments
+            ? [call(path, print, "typeArguments"), common]
+            : common;
+        return [".", ...join(" ", [...map(path, print, "annotation"), type])];
+    },
+    fqnOrRefTypePartCommon(path, print) {
+        const { children } = path.node;
+        const keywordKey = onlyDefinedKey(children, ["Identifier", "Super"]);
+        const keyword = call(path, print, keywordKey);
+        return children.typeArguments
+            ? [keyword, call(path, print, "typeArguments")]
+            : keyword;
+    },
+    parenthesisExpression(path, print) {
+        var _a;
+        const expression = call(path, print, "expression");
+        const ancestorName = (_a = path.getNode(14)) === null || _a === void 0 ? void 0 : _a.name;
+        const binaryExpression = path.getNode(8);
+        return ancestorName &&
+            ["guard", "returnStatement"].includes(ancestorName) &&
+            binaryExpression &&
+            binaryExpression.name === "binaryExpression" &&
+            Object.keys(binaryExpression.children).length === 1
+            ? indentInParentheses(expression)
+            : ["(", indent(expression), ")"];
+    },
+    castExpression: printSingle,
+    primitiveCastExpression(path, print) {
+        return [
+            "(",
+            call(path, print, "primitiveType"),
+            ") ",
+            call(path, print, "unaryExpression")
+        ];
+    },
+    referenceTypeCastExpression(path, print) {
+        const { children } = path.node;
+        const type = call(path, print, "referenceType");
+        const cast = children.additionalBound
+            ? indentInParentheses(join(line, [type, ...map(path, print, "additionalBound")]))
+            : ["(", type, ")"];
+        const expressionKey = onlyDefinedKey(children, [
+            "lambdaExpression",
+            "unaryExpressionNotPlusMinus"
+        ]);
+        return [cast, " ", call(path, print, expressionKey)];
+    },
+    newExpression: printSingle,
+    unqualifiedClassInstanceCreationExpression(path, print) {
+        const { children } = path.node;
+        const expression = ["new "];
+        if (children.typeArguments) {
+            expression.push(call(path, print, "typeArguments"));
+        }
+        expression.push(call(path, print, "classOrInterfaceTypeToInstantiate"), children.argumentList
+            ? group(["(", call(path, print, "argumentList"), ")"])
+            : "()");
+        if (children.classBody) {
+            expression.push(" ", call(path, print, "classBody"));
+        }
+        return expression;
+    },
+    classOrInterfaceTypeToInstantiate(path, print) {
+        const { children } = path.node;
+        const type = children.annotation
+            ? flatMap(path, childPath => [
+                print(childPath),
+                isNonTerminal(childPath.node) ? " " : "."
+            ], ["annotation", "Identifier"])
+            : printName(path, print);
+        if (children.typeArgumentsOrDiamond) {
+            type.push(call(path, print, "typeArgumentsOrDiamond"));
+        }
+        return type;
+    },
+    typeArgumentsOrDiamond: printSingle,
+    diamond() {
+        return "<>";
+    },
+    methodInvocationSuffix(path, print) {
+        return path.node.children.argumentList
+            ? group(["(", call(path, print, "argumentList"), ")"])
+            : indentInParentheses(printDanglingComments(path), { shouldBreak: true });
+    },
+    argumentList(path, print) {
+        var _a, _b, _c, _d;
+        const expressions = path.node.children.expression;
+        const lastExpression = expressions.at(-1);
+        const lastExpressionLambdaBodyExpression = (_b = (_a = lastExpression.children.lambdaExpression) === null || _a === void 0 ? void 0 : _a[0].children.lambdaBody[0].children.expression) === null || _b === void 0 ? void 0 : _b[0].children;
+        const lastExpressionLambdaBodyTernaryExpression = (_c = lastExpressionLambdaBodyExpression === null || lastExpressionLambdaBodyExpression === void 0 ? void 0 : lastExpressionLambdaBodyExpression.conditionalExpression) === null || _c === void 0 ? void 0 : _c[0].children;
+        const isHuggable = !lastExpression.comments &&
+            (!lastExpressionLambdaBodyExpression ||
+                (lastExpressionLambdaBodyTernaryExpression === null || lastExpressionLambdaBodyTernaryExpression === void 0 ? void 0 : lastExpressionLambdaBodyTernaryExpression.QuestionMark) !== undefined ||
+                ((_d = lastExpressionLambdaBodyTernaryExpression === null || lastExpressionLambdaBodyTernaryExpression === void 0 ? void 0 : lastExpressionLambdaBodyTernaryExpression.binaryExpression) === null || _d === void 0 ? void 0 : _d[0].children.unaryExpression.length) === 1) &&
+            expressions.findIndex(({ children }) => children.lambdaExpression) ===
+                expressions.length - 1;
+        const args = map(path, print, "expression");
+        const allArgsExpandable = [
+            indent([softline, ...join([",", line], args)]),
+            softline
+        ];
+        if (!isHuggable || willBreak(args.at(-1)[0])) {
+            return allArgsExpandable;
+        }
+        const headArgs = args.slice(0, -1);
+        const huggedLastArg = path.call(argPath => print(argPath, { hug: true }), "children", "expression", args.length - 1);
+        const lastArgExpanded = join(", ", [
+            ...headArgs,
+            group(huggedLastArg, { shouldBreak: true })
+        ]);
+        if (willBreak(huggedLastArg)) {
+            return [
+                breakParent,
+                conditionalGroup([lastArgExpanded, allArgsExpandable])
+            ];
+        }
+        return conditionalGroup([
+            join(", ", [...headArgs, huggedLastArg]),
+            lastArgExpanded,
+            allArgsExpandable
+        ]);
+    },
+    arrayCreationExpression(path, print) {
+        const { children } = path.node;
+        const typeKey = onlyDefinedKey(children, [
+            "classOrInterfaceType",
+            "primitiveType"
+        ]);
+        const suffixKey = onlyDefinedKey(children, [
+            "arrayCreationExpressionWithoutInitializerSuffix",
+            "arrayCreationWithInitializerSuffix"
+        ]);
+        return ["new ", call(path, print, typeKey), call(path, print, suffixKey)];
+    },
+    arrayCreationExpressionWithoutInitializerSuffix(path, print) {
+        const expressions = call(path, print, "dimExprs");
+        return path.node.children.dims
+            ? [expressions, call(path, print, "dims")]
+            : expressions;
+    },
+    arrayCreationWithInitializerSuffix(path, print) {
+        return [
+            call(path, print, "dims"),
+            " ",
+            call(path, print, "arrayInitializer")
+        ];
+    },
+    dimExprs(path, print) {
+        return map(path, print, "dimExpr");
+    },
+    dimExpr(path, print) {
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            ["[", call(path, print, "expression"), "]"]
+        ]);
+    },
+    classLiteralSuffix(path, print) {
+        const lSquares = map(path, print, "LSquare");
+        const rSquares = map(path, print, "RSquare");
+        return [
+            ...lSquares.flatMap((lSquare, index) => [lSquare, rSquares[index]]),
+            ".class"
+        ];
+    },
+    arrayAccessSuffix(path, print) {
+        return ["[", call(path, print, "expression"), "]"];
+    },
+    methodReferenceSuffix(path, print) {
+        const { children } = path.node;
+        const reference = ["::"];
+        if (children.typeArguments) {
+            reference.push(call(path, print, "typeArguments"));
+        }
+        reference.push(call(path, print, onlyDefinedKey(children, ["Identifier", "New"])));
+        return reference;
+    },
+    templateArgument: printSingle,
+    template: printSingle,
+    stringTemplate(path, print) {
+        return printTemplate(path, print, "StringTemplateBegin", "StringTemplateMid", "StringTemplateEnd");
+    },
+    textBlockTemplate(path, print) {
+        return printTemplate(path, print, "TextBlockTemplateBegin", "TextBlockTemplateMid", "TextBlockTemplateEnd");
+    },
+    embeddedExpression: printSingle,
+    pattern: printSingle,
+    typePattern: printSingle,
+    recordPattern(path, print) {
+        const patterns = path.node.children.componentPatternList
+            ? indentInParentheses(call(path, print, "componentPatternList"))
+            : "()";
+        return [call(path, print, "referenceType"), patterns];
+    },
+    componentPatternList(path, print) {
+        return printList(path, print, "componentPattern");
+    },
+    componentPattern: printSingle,
+    matchAllPattern: printSingle,
+    guard(path, print) {
+        var _a;
+        const expression = call(path, print, "expression");
+        const hasParentheses = ((_a = path.node.children.expression[0].children.conditionalExpression) === null || _a === void 0 ? void 0 : _a[0].children.binaryExpression[0].children.unaryExpression[0].children.primary[0].children.primaryPrefix[0].children.parenthesisExpression) !==
+            undefined;
+        return [
+            "when ",
+            hasParentheses
+                ? expression
+                : group([
+                    ifBreak("("),
+                    indent([softline, expression]),
+                    softline,
+                    ifBreak(")")
+                ])
+        ];
+    }
+};
+function binary(operands, operators, { hasNonAssignmentOperators = false, isInList = false, isRoot = false, operatorPosition }) {
+    let levelOperator;
+    let levelPrecedence;
+    let level = [];
+    while (operators.length) {
+        const nextOperator = operators[0].image;
+        const nextPrecedence = getOperatorPrecedence(nextOperator);
+        if (levelPrecedence === undefined || nextPrecedence === levelPrecedence) {
+            const { image: operator, doc: operatorDoc } = operators.shift();
+            level.push(operands.shift());
+            if (levelOperator !== undefined &&
+                needsParentheses(levelOperator, operator)) {
+                level = [["(", group(indent(level)), ")"]];
+            }
+            const parts = [" ", operatorDoc, line];
+            if (operatorPosition === "start" && !isAssignmentOperator(operator)) {
+                parts.reverse();
+            }
+            level.push(parts);
+            levelOperator = operator;
+            levelPrecedence = nextPrecedence;
+        }
+        else if (nextPrecedence < levelPrecedence) {
+            if (!isRoot) {
+                break;
+            }
+            level.push(operands.shift());
+            const content = group(indent(level));
+            operands.unshift(levelOperator !== undefined &&
+                needsParentheses(levelOperator, nextOperator)
+                ? ["(", content, ")"]
+                : content);
+            level = [];
+            levelOperator = undefined;
+            levelPrecedence = undefined;
+        }
+        else {
+            const content = binary(operands, operators, { operatorPosition });
+            operands.unshift(levelOperator !== undefined &&
+                needsParentheses(nextOperator, levelOperator)
+                ? ["(", indent(content), ")"]
+                : content);
+        }
+    }
+    level.push(operands.shift());
+    if (!levelOperator ||
+        (!isInList &&
+            !isAssignmentOperator(levelOperator) &&
+            levelOperator !== "instanceof")) {
+        return group(level);
+    }
+    if (!isRoot || hasNonAssignmentOperators) {
+        return group(indent(level));
+    }
+    const groupId = Symbol("assignment");
+    return group([
+        level[0],
+        group(indent(level[1]), { id: groupId }),
+        indentIfBreak(level[2], { groupId })
+    ]);
+}
+const precedencesByOperator = new Map([
+    ["||"],
+    ["&&"],
+    ["|"],
+    ["^"],
+    ["&"],
+    ["==", "!="],
+    ["<", ">", "<=", ">=", "instanceof"],
+    ["<<", ">>", ">>>"],
+    ["+", "-"],
+    ["*", "/", "%"]
+].flatMap((operators, index) => operators.map(operator => [operator, index])));
+function getOperatorPrecedence(operator) {
+    var _a;
+    return (_a = precedencesByOperator.get(operator)) !== null && _a !== void 0 ? _a : -1;
+}
+function needsParentheses(operator, parentOperator) {
+    return ((operator === "&&" && parentOperator === "||") ||
+        (["|", "^", "&", "<<", ">>", ">>>"].includes(parentOperator) &&
+            getOperatorPrecedence(operator) >
+                getOperatorPrecedence(parentOperator)) ||
+        [operator, parentOperator].every(o => ["==", "!="].includes(o)) ||
+        [operator, parentOperator].every(o => ["<<", ">>", ">>>"].includes(o)) ||
+        (operator === "*" && parentOperator === "/") ||
+        (operator === "/" && parentOperator === "*") ||
+        (operator === "%" && ["+", "-", "*", "/"].includes(parentOperator)) ||
+        (["*", "/"].includes(operator) && parentOperator === "%"));
+}
+const assignmentOperators = new Set([
+    "=",
+    "*=",
+    "/=",
+    "%=",
+    "+=",
+    "-=",
+    "<<=",
+    ">>=",
+    ">>>=",
+    "&=",
+    "^=",
+    "|="
+]);
+function isAssignmentOperator(operator) {
+    return assignmentOperators.has(operator);
+}
+function isCapitalizedIdentifier(fqnOrRefType) {
+    var _a, _b, _c;
+    const nextToLastIdentifier = (_c = (_b = [
+        fqnOrRefType.fqnOrRefTypePartFirst[0],
+        ...((_a = fqnOrRefType.fqnOrRefTypePartRest) !== null && _a !== void 0 ? _a : [])
+    ].at(-2)) === null || _b === void 0 ? void 0 : _b.children.fqnOrRefTypePartCommon[0].children.Identifier) === null || _c === void 0 ? void 0 : _c[0].image;
+    return /^\p{Uppercase_Letter}/u.test(nextToLastIdentifier !== null && nextToLastIdentifier !== void 0 ? nextToLastIdentifier : "");
+}
+function printTemplate(path, print, beginKey, midKey, endKey) {
+    const begin = call(path, ({ node }) => node.image, beginKey);
+    const mids = map(path, ({ node }) => node.image, midKey);
+    const end = call(path, ({ node }) => node.image, endKey);
+    const lines = [begin, ...mids, end].join("").split("\n").slice(1);
+    const baseIndent = findBaseIndent(lines);
+    const prefix = "\n" + " ".repeat(baseIndent);
+    const parts = [begin, ...mids, end].map(image => join(hardline, image.split(prefix)));
+    return indent([
+        parts[0],
+        ...map(path, (expressionPath, index) => {
+            const expression = group([
+                indent([softline, print(expressionPath), lineSuffixBoundary]),
+                softline
+            ]);
+            return index === 0 ? expression : [parts[index], expression];
+        }, "embeddedExpression"),
+        parts.at(-1)
+    ]);
+}

frontend/src/common/prettier/plugins/java/printers/helpers.d.ts

@@ -0,0 +1,71 @@
+import type { AnnotationCstNode, ClassPermitsCstNode, ClassTypeCtx, CstElement, CstNode, ExpressionCstNode, InterfacePermitsCstNode, IToken, StatementCstNode } from "java-parser";
+import type { AstPath, Doc, ParserOptions } from "prettier";
+import { builders } from "prettier/doc";
+import type { JavaComment } from "../comments.js";
+export declare function onlyDefinedKey<T extends Record<string, any>, K extends Key<T> & string>(obj: T, options?: K[]): K;
+export declare function definedKeys<T extends Record<string, any>, K extends Key<T> & string>(obj: T, options?: K[]): K[];
+export declare function printWithModifiers<T extends CstNode, P extends IterProperties<T["children"]>>(path: AstPath<T>, print: JavaPrintFn, modifierChild: P, contents: Doc, noTypeAnnotations?: boolean): builders.Doc[];
+export declare function hasDeclarationAnnotations(modifiers: ModifierNode[]): boolean;
+export declare function call<T extends CstNode, U, P extends IterProperties<T["children"]>>(path: AstPath<T>, callback: MapCallback<IndexValue<IndexValue<T, "children">, P>, U>, child: P): U;
+export declare function each<T extends CstNode, P extends IterProperties<T["children"]>>(path: AstPath<T>, callback: MapCallback<IndexValue<IndexValue<T, "children">, P>, void>, child: P): void;
+export declare function map<T extends CstNode, U, P extends IterProperties<T["children"]>>(path: AstPath<T>, callback: MapCallback<IndexValue<IndexValue<T, "children">, P>, U>, child: P): U[];
+export declare function flatMap<T extends CstNode, U, P extends IterProperties<T["children"]>>(path: AstPath<T>, callback: MapCallback<IndexValue<IndexValue<T, "children">, P>, U>, children: P[]): U[];
+export declare function printSingle(path: AstPath<JavaNonTerminal>, print: JavaPrintFn, _?: JavaParserOptions, args?: unknown): builders.Doc;
+export declare function lineStartWithComments(node: JavaNonTerminal): number;
+export declare function lineEndWithComments(node: JavaNonTerminal): number;
+export declare function printDanglingComments(path: AstPath<JavaNonTerminal>): builders.Doc[];
+export declare function printComment(node: JavaTerminal): string | builders.Doc[];
+export declare function hasLeadingComments(node: JavaNode): boolean | undefined;
+export declare function indentInParentheses(contents: Doc, opts?: {
+    shouldBreak?: boolean;
+}): builders.Group | "()";
+export declare function printArrayInitializer<T extends JavaNonTerminal, P extends IterProperties<T["children"]>>(path: AstPath<T>, print: JavaPrintFn, options: JavaParserOptions, child: P): builders.Group | "{}";
+export declare function printBlock(path: AstPath<JavaNonTerminal>, contents: Doc[]): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+export declare function printName(path: AstPath<JavaNonTerminal & {
+    children: {
+        Identifier: IToken[];
+    };
+}>, print: JavaPrintFn): builders.Doc[];
+export declare function printList<T extends JavaNonTerminal, P extends IterProperties<T["children"]>>(path: AstPath<T>, print: JavaPrintFn, child: P): builders.Doc[];
+export declare function printClassPermits(path: AstPath<ClassPermitsCstNode | InterfacePermitsCstNode>, print: JavaPrintFn): builders.Group;
+export declare function printClassType(path: AstPath<JavaNonTerminal & {
+    children: ClassTypeCtx;
+}>, print: JavaPrintFn): builders.Doc[];
+export declare function isBinaryExpression(expression: ExpressionCstNode): boolean;
+export declare function findBaseIndent(lines: string[]): number;
+export declare function isEmptyStatement(statement: StatementCstNode): boolean;
+export declare function isNonTerminal(node: CstElement): node is JavaNonTerminal;
+export declare function isTerminal(node: CstElement): node is IToken;
+export type JavaNode = CstElement & {
+    comments?: JavaComment[];
+};
+export type JavaNonTerminal = Exclude<JavaNode, IToken>;
+export type JavaTerminal = Exclude<JavaNode, CstNode>;
+export type JavaNodePrinters = {
+    [T in JavaNonTerminal["name"]]: JavaNodePrinter<T>;
+};
+export type JavaNodePrinter<T> = (path: AstPath<Extract<JavaNonTerminal, {
+    name: T;
+}>>, print: JavaPrintFn, options: JavaParserOptions, args?: unknown) => Doc;
+export type JavaPrintFn = (path: AstPath<JavaNode>, args?: unknown) => Doc;
+export type JavaParserOptions = ParserOptions<JavaNode> & {
+    entrypoint?: string;
+};
+export type IterProperties<T> = T extends any[] ? IndexProperties<T> : ArrayProperties<T>;
+type Key<T> = T extends T ? keyof T : never;
+type ModifierNode = JavaNonTerminal & {
+    children: {
+        annotation?: AnnotationCstNode[];
+    };
+};
+type IsTuple<T> = T extends [] ? true : T extends [infer First, ...infer Remain] ? IsTuple<Remain> : false;
+type IndexProperties<T extends {
+    length: number;
+}> = IsTuple<T> extends true ? Exclude<Partial<T>["length"], T["length"]> : number;
+type ArrayProperties<T> = {
+    [K in keyof T]: NonNullable<T[K]> extends readonly any[] ? K : never;
+}[keyof T];
+type ArrayElement<T> = T extends Array<infer E> ? E : never;
+type MapCallback<T, U> = (path: AstPath<ArrayElement<T>>, index: number, value: any) => U;
+type IndexValue<T, P> = T extends any[] ? P extends number ? T[P] : never : P extends keyof T ? T[P] : never;
+export {};

frontend/src/common/prettier/plugins/java/printers/helpers.js

@@ -0,0 +1,239 @@
+import { builders } from "prettier/doc";
+import parser from "../parser.js";
+const { group, hardline, ifBreak, indent, join, line, softline } = builders;
+export function onlyDefinedKey(obj, options) {
+    const keys = definedKeys(obj, options);
+    if (keys.length === 1) {
+        return keys[0];
+    }
+    throw new Error(keys.length > 1
+        ? `More than one defined key found: ${keys}`
+        : "No defined keys found");
+}
+export function definedKeys(obj, options) {
+    return (options !== null && options !== void 0 ? options : Object.keys(obj)).filter(key => obj[key] !== undefined);
+}
+const indexByModifier = [
+    "public",
+    "protected",
+    "private",
+    "abstract",
+    "default",
+    "static",
+    "final",
+    "transient",
+    "volatile",
+    "synchronized",
+    "native",
+    "sealed",
+    "non-sealed",
+    "strictfp"
+].reduce((map, name, index) => map.set(name, index), new Map());
+export function printWithModifiers(path, print, modifierChild, contents, noTypeAnnotations = false) {
+    const declarationAnnotations = [];
+    const otherModifiers = [];
+    const typeAnnotations = [];
+    each(path, modifierPath => {
+        const { children } = modifierPath.node;
+        const modifier = print(modifierPath);
+        if (children.annotation) {
+            (otherModifiers.length ? typeAnnotations : declarationAnnotations).push(modifier);
+        }
+        else {
+            otherModifiers.push(modifier);
+            declarationAnnotations.push(...typeAnnotations);
+            typeAnnotations.length = 0;
+        }
+    }, modifierChild);
+    if (noTypeAnnotations) {
+        declarationAnnotations.push(...typeAnnotations);
+        typeAnnotations.length = 0;
+    }
+    otherModifiers.sort((a, b) => indexByModifier.get(a) - indexByModifier.get(b));
+    return join(hardline, [
+        ...declarationAnnotations,
+        join(" ", [...otherModifiers, ...typeAnnotations, contents])
+    ]);
+}
+export function hasDeclarationAnnotations(modifiers) {
+    let hasAnnotation = false;
+    let hasNonAnnotation = false;
+    for (const modifier of modifiers) {
+        if (modifier.children.annotation) {
+            hasAnnotation = true;
+        }
+        else if (hasAnnotation) {
+            return true;
+        }
+        else {
+            hasNonAnnotation = true;
+        }
+    }
+    return hasAnnotation && !hasNonAnnotation;
+}
+export function call(path, callback, child) {
+    return path.map(callback, "children", child)[0];
+}
+export function each(path, callback, child) {
+    if (path.node.children[child]) {
+        path.each(callback, "children", child);
+    }
+}
+export function map(path, callback, child) {
+    return path.node.children[child] ? path.map(callback, "children", child) : [];
+}
+export function flatMap(path, callback, children) {
+    return children
+        .flatMap(child => map(path, callback, child).map((doc, index) => {
+        const node = path.node.children[child][index];
+        return {
+            doc,
+            startOffset: parser.locStart(node)
+        };
+    }))
+        .sort((a, b) => a.startOffset - b.startOffset)
+        .map(({ doc }) => doc);
+}
+export function printSingle(path, print, _, args) {
+    return call(path, childPath => print(childPath, args), onlyDefinedKey(path.node.children));
+}
+export function lineStartWithComments(node) {
+    const { comments, location } = node;
+    return comments
+        ? Math.min(location.startLine, comments[0].startLine)
+        : location.startLine;
+}
+export function lineEndWithComments(node) {
+    const { comments, location } = node;
+    return comments
+        ? Math.max(location.endLine, comments.at(-1).endLine)
+        : location.endLine;
+}
+export function printDanglingComments(path) {
+    if (!path.node.comments) {
+        return [];
+    }
+    const comments = [];
+    path.each(commentPath => {
+        const comment = commentPath.node;
+        if (comment.leading || comment.trailing) {
+            return;
+        }
+        comment.printed = true;
+        comments.push(printComment(comment));
+    }, "comments");
+    return join(hardline, comments);
+}
+export function printComment(node) {
+    const { image } = node;
+    const lines = image.split("\n").map(line => line.trim());
+    return lines.length > 1 &&
+        lines[0].startsWith("/*") &&
+        lines.slice(1).every(line => line.startsWith("*")) &&
+        lines.at(-1).endsWith("*/")
+        ? join(hardline, lines.map((line, index) => (index === 0 ? line : ` ${line}`)))
+        : image;
+}
+export function hasLeadingComments(node) {
+    var _a;
+    return (_a = node.comments) === null || _a === void 0 ? void 0 : _a.some(({ leading }) => leading);
+}
+export function indentInParentheses(contents, opts) {
+    return !Array.isArray(contents) || contents.length
+        ? group(["(", indent([softline, contents]), softline, ")"], opts)
+        : "()";
+}
+export function printArrayInitializer(path, print, options, child) {
+    const list = [];
+    if (child && child in path.node.children) {
+        list.push(call(path, print, child));
+        if (options.trailingComma !== "none") {
+            list.push(ifBreak(","));
+        }
+    }
+    list.push(...printDanglingComments(path));
+    return list.length ? group(["{", indent([line, ...list]), line, "}"]) : "{}";
+}
+export function printBlock(path, contents) {
+    if (!contents.length) {
+        const danglingComments = printDanglingComments(path);
+        return danglingComments.length
+            ? ["{", indent([hardline, ...danglingComments]), hardline, "}"]
+            : "{}";
+    }
+    return group([
+        "{",
+        indent([hardline, ...join(hardline, contents)]),
+        hardline,
+        "}"
+    ]);
+}
+export function printName(path, print) {
+    return join(".", map(path, print, "Identifier"));
+}
+export function printList(path, print, child) {
+    return join([",", line], map(path, print, child));
+}
+export function printClassPermits(path, print) {
+    return group([
+        "permits",
+        indent([line, group(printList(path, print, "typeName"))])
+    ]);
+}
+export function printClassType(path, print) {
+    const { children } = path.node;
+    return definedKeys(children, ["annotation", "Identifier", "typeArguments"])
+        .flatMap(child => children[child].map((node, index) => ({
+        child,
+        index,
+        startOffset: parser.locStart(node)
+    })))
+        .sort((a, b) => a.startOffset - b.startOffset)
+        .flatMap(({ child, index: childIndex }, index, array) => {
+        const node = children[child][childIndex];
+        const next = array.at(index + 1);
+        const nextNode = next && children[next.child][next.index];
+        const docs = [path.call(print, "children", child, childIndex)];
+        if (nextNode) {
+            if (isNonTerminal(node)) {
+                docs.push(node.name === "annotation" ? " " : ".");
+            }
+            else if (isTerminal(nextNode) || nextNode.name === "annotation") {
+                docs.push(".");
+            }
+        }
+        return docs;
+    });
+}
+export function isBinaryExpression(expression) {
+    var _a;
+    const conditionalExpression = (_a = expression.children.conditionalExpression) === null || _a === void 0 ? void 0 : _a[0].children;
+    if (!conditionalExpression) {
+        return false;
+    }
+    const isTernary = conditionalExpression.QuestionMark !== undefined;
+    if (isTernary) {
+        return false;
+    }
+    const hasNonAssignmentOperators = Object.values(conditionalExpression.binaryExpression[0].children).some(child => {
+        var _a;
+        return isTerminal(child[0]) &&
+            !((_a = child[0].tokenType.CATEGORIES) === null || _a === void 0 ? void 0 : _a.some(category => category.name === "AssignmentOperator"));
+    });
+    return hasNonAssignmentOperators;
+}
+export function findBaseIndent(lines) {
+    return lines.length
+        ? Math.min(...lines.map(line => line.search(/\S/)).filter(indent => indent >= 0))
+        : 0;
+}
+export function isEmptyStatement(statement) {
+    var _a;
+    return (((_a = statement.children.statementWithoutTrailingSubstatement) === null || _a === void 0 ? void 0 : _a[0].children.emptyStatement) !== undefined);
+}
+export function isNonTerminal(node) {
+    return !isTerminal(node);
+}
+export function isTerminal(node) {
+    return "tokenType" in node;
+}

frontend/src/common/prettier/plugins/java/printers/index.d.ts

@@ -0,0 +1,2 @@
+import type { JavaNodePrinter, JavaNodePrinters } from "./helpers.js";
+export declare function printerForNodeType<T extends keyof JavaNodePrinters>(type: T): JavaNodePrinter<T>;

frontend/src/common/prettier/plugins/java/printers/index.js

@@ -0,0 +1,13 @@
+import arrays from "./arrays.js";
+import blocksAndStatements from "./blocks-and-statements.js";
+import classes from "./classes.js";
+import expressions from "./expressions.js";
+import interfaces from "./interfaces.js";
+import lexicalStructure from "./lexical-structure.js";
+import names from "./names.js";
+import packagesAndModules from "./packages-and-modules.js";
+import typesValuesAndVariables from "./types-values-and-variables.js";
+const printersByNodeType = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, arrays), blocksAndStatements), classes), expressions), interfaces), lexicalStructure), names), packagesAndModules), typesValuesAndVariables);
+export function printerForNodeType(type) {
+    return printersByNodeType[type];
+}

frontend/src/common/prettier/plugins/java/printers/interfaces.d.ts

@@ -0,0 +1,62 @@
+import { builders } from "prettier/doc";
+import { printClassPermits, printSingle } from "./helpers.js";
+declare const _default: {
+    interfaceDeclaration(path: import("prettier").AstPath<import("java-parser").InterfaceDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    normalInterfaceDeclaration(path: import("prettier").AstPath<import("java-parser").NormalInterfaceDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    interfaceModifier: typeof printSingle;
+    interfaceExtends(path: import("prettier").AstPath<import("java-parser").InterfaceExtendsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group;
+    interfacePermits: typeof printClassPermits;
+    interfaceBody(path: import("prettier").AstPath<import("java-parser").InterfaceBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    interfaceMemberDeclaration(path: import("prettier").AstPath<import("java-parser").InterfaceMemberDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc;
+    constantDeclaration(path: import("prettier").AstPath<import("java-parser").ConstantDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    constantModifier: typeof printSingle;
+    interfaceMethodDeclaration(path: import("prettier").AstPath<import("java-parser").InterfaceMethodDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    interfaceMethodModifier: typeof printSingle;
+    annotationInterfaceDeclaration(path: import("prettier").AstPath<import("java-parser").AnnotationInterfaceDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    annotationInterfaceBody(path: import("prettier").AstPath<import("java-parser").AnnotationInterfaceBodyCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group | "{}" | (string | builders.Indent | builders.Hardline)[];
+    annotationInterfaceMemberDeclaration(path: import("prettier").AstPath<import("java-parser").AnnotationInterfaceMemberDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc;
+    annotationInterfaceElementDeclaration(path: import("prettier").AstPath<import("java-parser").AnnotationInterfaceElementDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    annotationInterfaceElementModifier: typeof printSingle;
+    defaultValue(path: import("prettier").AstPath<import("java-parser").DefaultValueCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    annotation(path: import("prettier").AstPath<import("java-parser").AnnotationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    elementValuePairList(path: import("prettier").AstPath<import("java-parser").ElementValuePairListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    elementValuePair(path: import("prettier").AstPath<import("java-parser").ElementValuePairCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    elementValue: typeof printSingle;
+    elementValueArrayInitializer(path: import("prettier").AstPath<import("java-parser").ElementValueArrayInitializerCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn, options: import("./helpers.js").JavaParserOptions): builders.Group | "{}";
+    elementValueList(path: import("prettier").AstPath<import("java-parser").ElementValueListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group;
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/interfaces.js

@@ -0,0 +1,157 @@
+import { builders } from "prettier/doc";
+import { call, each, hasDeclarationAnnotations, indentInParentheses, lineEndWithComments, lineStartWithComments, onlyDefinedKey, printArrayInitializer, printBlock, printClassPermits, printList, printSingle, printWithModifiers } from "./helpers.js";
+const { group, hardline, indent, join, line } = builders;
+export default {
+    interfaceDeclaration(path, print) {
+        const declarationKey = onlyDefinedKey(path.node.children, [
+            "annotationInterfaceDeclaration",
+            "normalInterfaceDeclaration"
+        ]);
+        return printWithModifiers(path, print, "interfaceModifier", call(path, print, declarationKey), true);
+    },
+    normalInterfaceDeclaration(path, print) {
+        const { interfaceExtends, interfacePermits, typeParameters } = path.node.children;
+        const header = ["interface ", call(path, print, "typeIdentifier")];
+        if (typeParameters) {
+            header.push(call(path, print, "typeParameters"));
+        }
+        if (interfaceExtends) {
+            header.push(indent([line, call(path, print, "interfaceExtends")]));
+        }
+        if (interfacePermits) {
+            header.push(indent([line, call(path, print, "interfacePermits")]));
+        }
+        return [group(header), " ", call(path, print, "interfaceBody")];
+    },
+    interfaceModifier: printSingle,
+    interfaceExtends(path, print) {
+        return group([
+            "extends",
+            indent([line, call(path, print, "interfaceTypeList")])
+        ]);
+    },
+    interfacePermits: printClassPermits,
+    interfaceBody(path, print) {
+        const declarations = [];
+        let previousRequiresPadding = false;
+        each(path, declarationPath => {
+            var _a, _b, _c, _d;
+            const declaration = print(declarationPath);
+            if (declaration === "") {
+                return;
+            }
+            const { node, previous } = declarationPath;
+            const constantDeclaration = (_a = node.children.constantDeclaration) === null || _a === void 0 ? void 0 : _a[0].children;
+            const methodDeclaration = (_b = node.children.interfaceMethodDeclaration) === null || _b === void 0 ? void 0 : _b[0].children;
+            const currentRequiresPadding = (!constantDeclaration && !methodDeclaration) ||
+                (methodDeclaration === null || methodDeclaration === void 0 ? void 0 : methodDeclaration.methodBody[0].children.block) !== undefined ||
+                hasDeclarationAnnotations((_d = (_c = constantDeclaration === null || constantDeclaration === void 0 ? void 0 : constantDeclaration.constantModifier) !== null && _c !== void 0 ? _c : methodDeclaration === null || methodDeclaration === void 0 ? void 0 : methodDeclaration.interfaceMethodModifier) !== null && _d !== void 0 ? _d : []);
+            const blankLine = declarations.length > 0 &&
+                (previousRequiresPadding ||
+                    currentRequiresPadding ||
+                    lineStartWithComments(node) > lineEndWithComments(previous) + 1);
+            declarations.push(blankLine ? [hardline, declaration] : declaration);
+            previousRequiresPadding = currentRequiresPadding;
+        }, "interfaceMemberDeclaration");
+        return printBlock(path, declarations);
+    },
+    interfaceMemberDeclaration(path, print) {
+        const { children } = path.node;
+        return children.Semicolon
+            ? ""
+            : call(path, print, onlyDefinedKey(children));
+    },
+    constantDeclaration(path, print) {
+        const declaration = [
+            call(path, print, "unannType"),
+            " ",
+            call(path, print, "variableDeclaratorList"),
+            ";"
+        ];
+        return printWithModifiers(path, print, "constantModifier", declaration);
+    },
+    constantModifier: printSingle,
+    interfaceMethodDeclaration(path, print) {
+        const declaration = [
+            call(path, print, "methodHeader"),
+            path.node.children.methodBody[0].children.Semicolon ? "" : " ",
+            call(path, print, "methodBody")
+        ];
+        return printWithModifiers(path, print, "interfaceMethodModifier", declaration);
+    },
+    interfaceMethodModifier: printSingle,
+    annotationInterfaceDeclaration(path, print) {
+        return join(" ", [
+            "@interface",
+            call(path, print, "typeIdentifier"),
+            call(path, print, "annotationInterfaceBody")
+        ]);
+    },
+    annotationInterfaceBody(path, print) {
+        const declarations = [];
+        each(path, declarationPath => {
+            const declaration = print(declarationPath);
+            if (declaration === "") {
+                return;
+            }
+            declarations.push(declarationPath.isFirst ? declaration : [hardline, declaration]);
+        }, "annotationInterfaceMemberDeclaration");
+        return printBlock(path, declarations);
+    },
+    annotationInterfaceMemberDeclaration(path, print) {
+        const { children } = path.node;
+        return children.Semicolon
+            ? ""
+            : call(path, print, onlyDefinedKey(children));
+    },
+    annotationInterfaceElementDeclaration(path, print) {
+        const { dims, defaultValue } = path.node.children;
+        const declaration = [
+            call(path, print, "unannType"),
+            " ",
+            call(path, print, "Identifier"),
+            "()"
+        ];
+        if (dims) {
+            declaration.push(call(path, print, "dims"));
+        }
+        if (defaultValue) {
+            declaration.push(" ", call(path, print, "defaultValue"));
+        }
+        declaration.push(";");
+        return printWithModifiers(path, print, "annotationInterfaceElementModifier", declaration);
+    },
+    annotationInterfaceElementModifier: printSingle,
+    defaultValue(path, print) {
+        return ["default ", call(path, print, "elementValue")];
+    },
+    annotation(path, print) {
+        const { children } = path.node;
+        const annotation = ["@", call(path, print, "typeName")];
+        if (children.elementValue || children.elementValuePairList) {
+            const valuesKey = onlyDefinedKey(children, [
+                "elementValue",
+                "elementValuePairList"
+            ]);
+            annotation.push(indentInParentheses(call(path, print, valuesKey)));
+        }
+        return annotation;
+    },
+    elementValuePairList(path, print) {
+        return printList(path, print, "elementValuePair");
+    },
+    elementValuePair(path, print) {
+        return join(" ", [
+            call(path, print, "Identifier"),
+            call(path, print, "Equals"),
+            call(path, print, "elementValue")
+        ]);
+    },
+    elementValue: printSingle,
+    elementValueArrayInitializer(path, print, options) {
+        return printArrayInitializer(path, print, options, "elementValueList");
+    },
+    elementValueList(path, print) {
+        return group(printList(path, print, "elementValue"));
+    }
+};

frontend/src/common/prettier/plugins/java/printers/lexical-structure.d.ts

@@ -0,0 +1,14 @@
+import { builders } from "prettier/doc";
+import { printSingle } from "./helpers.js";
+declare const _default: {
+    literal(path: import("prettier").AstPath<import("java-parser").LiteralCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc;
+    integerLiteral: typeof printSingle;
+    floatingPointLiteral: typeof printSingle;
+    booleanLiteral: typeof printSingle;
+    shiftOperator(path: import("prettier").AstPath<import("java-parser").ShiftOperatorCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/lexical-structure.js

@@ -0,0 +1,29 @@
+import { builders } from "prettier/doc";
+import { findBaseIndent, map, onlyDefinedKey, printSingle } from "./helpers.js";
+const { hardline, indent, join } = builders;
+export default {
+    literal(path, print) {
+        const { TextBlock } = path.node.children;
+        if (!TextBlock) {
+            return printSingle(path, print);
+        }
+        const [open, ...lines] = TextBlock[0].image.split("\n");
+        const baseIndent = findBaseIndent(lines);
+        const textBlock = join(hardline, [
+            open,
+            ...lines.map(line => line.slice(baseIndent))
+        ]);
+        const ancestor = path.getNode(14);
+        return (ancestor === null || ancestor === void 0 ? void 0 : ancestor.name) === "variableInitializer" ||
+            ((ancestor === null || ancestor === void 0 ? void 0 : ancestor.name) === "binaryExpression" &&
+                ancestor.children.AssignmentOperator)
+            ? indent(textBlock)
+            : textBlock;
+    },
+    integerLiteral: printSingle,
+    floatingPointLiteral: printSingle,
+    booleanLiteral: printSingle,
+    shiftOperator(path, print) {
+        return map(path, print, onlyDefinedKey(path.node.children));
+    }
+};

frontend/src/common/prettier/plugins/java/printers/names.d.ts

@@ -0,0 +1,12 @@
+import { printName, printSingle } from "./helpers.js";
+declare const _default: {
+    typeIdentifier: typeof printSingle;
+    moduleName: typeof printName;
+    packageName: typeof printName;
+    typeName: typeof printName;
+    expressionName: typeof printName;
+    methodName: typeof printSingle;
+    packageOrTypeName: typeof printName;
+    ambiguousName: typeof printName;
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/names.js

@@ -0,0 +1,11 @@
+import { printName, printSingle } from "./helpers.js";
+export default {
+    typeIdentifier: printSingle,
+    moduleName: printName,
+    packageName: printName,
+    typeName: printName,
+    expressionName: printName,
+    methodName: printSingle,
+    packageOrTypeName: printName,
+    ambiguousName: printName
+};

frontend/src/common/prettier/plugins/java/printers/packages-and-modules.d.ts

@@ -0,0 +1,46 @@
+import type { ExportsModuleDirectiveCstNode, ImportDeclarationCstNode, OpensModuleDirectiveCstNode } from "java-parser";
+import type { AstPath } from "prettier";
+import { builders } from "prettier/doc";
+import { printSingle, type JavaPrintFn } from "./helpers.js";
+declare const _default: {
+    compilationUnit(path: AstPath<import("java-parser").CompilationUnitCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    ordinaryCompilationUnit(path: AstPath<import("java-parser").OrdinaryCompilationUnitCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    modularCompilationUnit(path: AstPath<import("java-parser").ModularCompilationUnitCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    packageDeclaration(path: AstPath<import("java-parser").PackageDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    packageModifier: typeof printSingle;
+    importDeclaration(path: AstPath<ImportDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    typeDeclaration(path: AstPath<import("java-parser").TypeDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc;
+    moduleDeclaration(path: AstPath<import("java-parser").ModuleDeclarationCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    moduleDirective: typeof printSingle;
+    requiresModuleDirective(path: AstPath<import("java-parser").RequiresModuleDirectiveCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    exportsModuleDirective(path: AstPath<ExportsModuleDirectiveCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    opensModuleDirective(path: AstPath<OpensModuleDirectiveCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    usesModuleDirective(path: AstPath<import("java-parser").UsesModuleDirectiveCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    providesModuleDirective(path: AstPath<import("java-parser").ProvidesModuleDirectiveCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: JavaPrintFn): builders.Doc[];
+    requiresModifier: typeof printSingle;
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/packages-and-modules.js

@@ -0,0 +1,169 @@
+import { builders } from "prettier/doc";
+import { call, lineEndWithComments, lineStartWithComments, map, printBlock, printDanglingComments, printName, printSingle } from "./helpers.js";
+const { group, hardline, indent, join, line } = builders;
+export default {
+    compilationUnit(path, print) {
+        return [...printDanglingComments(path), printSingle(path, print), hardline];
+    },
+    ordinaryCompilationUnit(path, print) {
+        const { children } = path.node;
+        const declarations = [];
+        if (children.packageDeclaration) {
+            declarations.push(call(path, print, "packageDeclaration"));
+        }
+        if (children.importDeclaration) {
+            const staticCount = sortImports(children.importDeclaration);
+            const importDeclarations = map(path, print, "importDeclaration").filter(doc => doc !== "");
+            const staticDeclarations = importDeclarations.slice(0, staticCount);
+            const nonStaticDeclarations = importDeclarations.slice(staticCount);
+            declarations.push(...[staticDeclarations, nonStaticDeclarations]
+                .filter(({ length }) => length)
+                .map(declarations => join(hardline, declarations)));
+        }
+        if (children.typeDeclaration) {
+            declarations.push(...map(path, print, "typeDeclaration").filter(declaration => declaration !== ""));
+        }
+        return join([hardline, hardline], declarations);
+    },
+    modularCompilationUnit(path, print) {
+        const { children } = path.node;
+        const declarations = [];
+        if (children.importDeclaration) {
+            const staticCount = sortImports(children.importDeclaration);
+            const importDeclarations = map(path, print, "importDeclaration").filter(doc => doc !== "");
+            const staticDeclarations = importDeclarations.slice(0, staticCount);
+            const nonStaticDeclarations = importDeclarations.slice(staticCount);
+            declarations.push(...[staticDeclarations, nonStaticDeclarations]
+                .filter(({ length }) => length)
+                .map(declarations => join(hardline, declarations)));
+        }
+        declarations.push(call(path, print, "moduleDeclaration"));
+        return join([hardline, hardline], declarations);
+    },
+    packageDeclaration(path, print) {
+        return join(hardline, [
+            ...map(path, print, "packageModifier"),
+            ["package ", printName(path, print), ";"]
+        ]);
+    },
+    packageModifier: printSingle,
+    importDeclaration(path, print) {
+        const { children } = path.node;
+        if (children.emptyStatement) {
+            return call(path, print, "emptyStatement");
+        }
+        const declaration = ["import "];
+        if (children.Static) {
+            declaration.push("static ");
+        }
+        declaration.push(call(path, print, "packageOrTypeName"));
+        if (children.Star) {
+            declaration.push(".*");
+        }
+        declaration.push(";");
+        return declaration;
+    },
+    typeDeclaration(path, print) {
+        return path.node.children.Semicolon ? "" : printSingle(path, print);
+    },
+    moduleDeclaration(path, print) {
+        const { annotation, Open } = path.node.children;
+        const prefix = [];
+        if (annotation) {
+            prefix.push(...map(path, print, "annotation"));
+        }
+        if (Open) {
+            prefix.push("open");
+        }
+        const declarations = map(path, declarationPath => {
+            const declaration = print(declarationPath);
+            const { node, previous } = declarationPath;
+            return !previous ||
+                lineStartWithComments(node) <= lineEndWithComments(previous) + 1
+                ? declaration
+                : [hardline, declaration];
+        }, "moduleDirective");
+        return join(" ", [
+            ...prefix,
+            "module",
+            printName(path, print),
+            printBlock(path, declarations)
+        ]);
+    },
+    moduleDirective: printSingle,
+    requiresModuleDirective(path, print) {
+        return join(" ", [
+            "requires",
+            ...map(path, print, "requiresModifier"),
+            [call(path, print, "moduleName"), ";"]
+        ]);
+    },
+    exportsModuleDirective(path, print) {
+        return printToModuleNamesDirective(path, print, "exports");
+    },
+    opensModuleDirective(path, print) {
+        return printToModuleNamesDirective(path, print, "opens");
+    },
+    usesModuleDirective(path, print) {
+        return ["uses ", call(path, print, "typeName"), ";"];
+    },
+    providesModuleDirective(path, print) {
+        const [firstTypeName, ...restTypeNames] = map(path, print, "typeName");
+        return [
+            "provides ",
+            firstTypeName,
+            group(indent([
+                line,
+                group(indent(["with", line, ...join([",", line], restTypeNames)]))
+            ])),
+            ";"
+        ];
+    },
+    requiresModifier: printSingle
+};
+function sortImports(importDeclarations) {
+    importDeclarations.sort(({ children: a }, { children: b }) => {
+        if (a.Static && !b.Static) {
+            return -1;
+        }
+        else if (b.Static && !a.Static) {
+            return 1;
+        }
+        if (!b.packageOrTypeName) {
+            if (a.packageOrTypeName) {
+                return -1;
+            }
+            return 0;
+        }
+        else if (!a.packageOrTypeName) {
+            return 1;
+        }
+        return compareFqn(a.packageOrTypeName[0], b.packageOrTypeName[0]);
+    });
+    return importDeclarations.reduce((staticCount, importDeclaration) => importDeclaration.children.Static ? staticCount + 1 : staticCount, 0);
+}
+function compareFqn(a, b) {
+    const identifiersA = a.children.Identifier;
+    const identifiersB = b.children.Identifier;
+    const minParts = Math.min(identifiersA.length, identifiersB.length);
+    for (let i = 0; i < minParts; i++) {
+        const imageA = identifiersA[i].image;
+        const imageB = identifiersB[i].image;
+        if (imageA < imageB) {
+            return -1;
+        }
+        else if (imageA > imageB) {
+            return 1;
+        }
+    }
+    return identifiersA.length - identifiersB.length;
+}
+function printToModuleNamesDirective(path, print, prefix) {
+    const directive = [prefix, " ", call(path, print, "packageName")];
+    if (path.node.children.moduleName) {
+        const moduleNames = join([",", line], map(path, print, "moduleName"));
+        directive.push(group(indent([line, group(indent(["to", line, ...moduleNames]))])));
+    }
+    directive.push(";");
+    return directive;
+}

frontend/src/common/prettier/plugins/java/printers/types-values-and-variables.d.ts

@@ -0,0 +1,46 @@
+import { builders } from "prettier/doc";
+import { printClassType, printSingle } from "./helpers.js";
+declare const _default: {
+    primitiveType(path: import("prettier").AstPath<import("java-parser").PrimitiveTypeCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    numericType: typeof printSingle;
+    integralType: typeof printSingle;
+    floatingPointType: typeof printSingle;
+    referenceType(path: import("prettier").AstPath<import("java-parser").ReferenceTypeCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    classOrInterfaceType: typeof printSingle;
+    classType: typeof printClassType;
+    interfaceType: typeof printSingle;
+    typeVariable(path: import("prettier").AstPath<import("java-parser").TypeVariableCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    dims(path: import("prettier").AstPath<import("java-parser").DimsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    typeParameter(path: import("prettier").AstPath<import("java-parser").TypeParameterCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    typeParameterModifier: typeof printSingle;
+    typeBound(path: import("prettier").AstPath<import("java-parser").TypeBoundCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    additionalBound(path: import("prettier").AstPath<import("java-parser").AdditionalBoundCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    typeArguments(path: import("prettier").AstPath<import("java-parser").TypeArgumentsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Group;
+    typeArgumentList(path: import("prettier").AstPath<import("java-parser").TypeArgumentListCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    typeArgument: typeof printSingle;
+    wildcard(path: import("prettier").AstPath<import("java-parser").WildcardCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+    wildcardBounds(path: import("prettier").AstPath<import("java-parser").WildcardBoundsCstNode & {
+        comments?: import("../comments.js").JavaComment[];
+    }>, print: import("./helpers.js").JavaPrintFn): builders.Doc[];
+};
+export default _default;

frontend/src/common/prettier/plugins/java/printers/types-values-and-variables.js

@@ -0,0 +1,90 @@
+import { builders } from "prettier/doc";
+import { call, definedKeys, flatMap, isNonTerminal, map, onlyDefinedKey, printClassType, printList, printSingle } from "./helpers.js";
+const { group, indent, join, line, softline } = builders;
+export default {
+    primitiveType(path, print) {
+        const { children } = path.node;
+        const typeKey = onlyDefinedKey(children, ["Boolean", "numericType"]);
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            call(path, print, typeKey)
+        ]);
+    },
+    numericType: printSingle,
+    integralType: printSingle,
+    floatingPointType: printSingle,
+    referenceType(path, print) {
+        const { children } = path.node;
+        const typeKey = onlyDefinedKey(children, [
+            "primitiveType",
+            "classOrInterfaceType"
+        ]);
+        const type = call(path, print, typeKey);
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            children.dims ? [type, call(path, print, "dims")] : type
+        ]);
+    },
+    classOrInterfaceType: printSingle,
+    classType: printClassType,
+    interfaceType: printSingle,
+    typeVariable(path, print) {
+        return join(" ", [
+            ...map(path, print, "annotation"),
+            call(path, print, "Identifier")
+        ]);
+    },
+    dims(path, print) {
+        return flatMap(path, childPath => {
+            const child = print(childPath);
+            return isNonTerminal(childPath.node) ? [child, " "] : child;
+        }, definedKeys(path.node.children, ["annotation", "LSquare", "RSquare"]));
+    },
+    typeParameter(path, print) {
+        const parameter = [
+            ...map(path, print, "typeParameterModifier"),
+            call(path, print, "typeIdentifier")
+        ];
+        if (path.node.children.typeBound) {
+            parameter.push(call(path, print, "typeBound"));
+        }
+        return join(" ", parameter);
+    },
+    typeParameterModifier: printSingle,
+    typeBound(path, print) {
+        const bound = ["extends ", call(path, print, "classOrInterfaceType")];
+        if (path.node.children.additionalBound) {
+            bound.push(group(indent([line, ...join(line, map(path, print, "additionalBound"))])));
+        }
+        return bound;
+    },
+    additionalBound(path, print) {
+        return ["& ", call(path, print, "interfaceType")];
+    },
+    typeArguments(path, print) {
+        return group([
+            "<",
+            indent([softline, call(path, print, "typeArgumentList")]),
+            softline,
+            ">"
+        ]);
+    },
+    typeArgumentList(path, print) {
+        return printList(path, print, "typeArgument");
+    },
+    typeArgument: printSingle,
+    wildcard(path, print) {
+        const wildcard = [...map(path, print, "annotation"), "?"];
+        if (path.node.children.wildcardBounds) {
+            wildcard.push(call(path, print, "wildcardBounds"));
+        }
+        return join(" ", wildcard);
+    },
+    wildcardBounds(path, print) {
+        return [
+            path.node.children.Extends ? "extends" : "super",
+            " ",
+            call(path, print, "referenceType")
+        ];
+    }
+};

frontend/src/common/prettier/plugins/php/index.d.ts

@@ -0,0 +1,4 @@
+import type { Plugin } from "prettier";
+
+declare const plugin: Plugin;
+export default plugin;

frontend/src/common/prettier/plugins/php/index.mjs

@@ -0,0 +1,19 @@
+export {
+  languages, 
+  printers, 
+  parsers, 
+  options, 
+  defaultOptions 
+} from './src/index.mjs';
+
+import { languages, printers, parsers, options, defaultOptions } from './src/index.mjs';
+
+const phpPlugin = {
+  languages,
+  printers, 
+  parsers,
+  options,
+  defaultOptions
+};
+
+export default phpPlugin;

frontend/src/common/prettier/plugins/php/src/clean.mjs

@@ -0,0 +1,111 @@
+import { printNumber, normalizeMagicMethodName } from "./util.mjs";
+
+const ignoredProperties = new Set([
+  "loc",
+  "range",
+  "raw",
+  "comments",
+  "leadingComments",
+  "trailingComments",
+  "parenthesizedExpression",
+  "parent",
+  "prev",
+  "start",
+  "end",
+  "tokens",
+  "errors",
+  "extra",
+]);
+
+/**
+ * This function takes the existing ast node and a copy, by reference
+ * We use it for testing, so that we can compare pre-post versions of the AST,
+ * excluding things we don't care about (like node location, case that will be
+ * changed by the printer, etc.)
+ */
+function clean(node, newObj) {
+  if (node.kind === "string") {
+    // TODO if options are available in this method, replace with
+    // newObj.isDoubleQuote = !useSingleQuote(node, options);
+    delete newObj.isDoubleQuote;
+  }
+
+  if (["array", "list"].includes(node.kind)) {
+    // TODO if options are available in this method, assign instead of delete
+    delete newObj.shortForm;
+  }
+
+  if (node.kind === "inline") {
+    if (node.value.includes("___PSEUDO_INLINE_PLACEHOLDER___")) {
+      return null;
+    }
+
+    newObj.value = newObj.value.replace(/\n/g, "");
+  }
+
+  // continue ((2)); -> continue 2;
+  // continue 1; -> continue;
+  if ((node.kind === "continue" || node.kind === "break") && node.level) {
+    const { level } = newObj;
+
+    if (level.kind === "number") {
+      newObj.level = level.value === "1" ? null : level;
+    }
+  }
+
+  // if () {{ }} -> if () {}
+  if (node.kind === "block") {
+    if (node.children.length === 1 && node.children[0].kind === "block") {
+      while (newObj.children[0].kind === "block") {
+        newObj.children = newObj.children[0].children;
+      }
+    }
+  }
+
+  // Normalize numbers
+  if (node.kind === "number") {
+    newObj.value = printNumber(node.value);
+  }
+
+  const statements = ["foreach", "for", "if", "while", "do"];
+
+  if (statements.includes(node.kind)) {
+    if (node.body && node.body.kind !== "block") {
+      newObj.body = {
+        kind: "block",
+        children: [newObj.body],
+      };
+    } else {
+      newObj.body = newObj.body ? newObj.body : null;
+    }
+
+    if (node.alternate && node.alternate.kind !== "block") {
+      newObj.alternate = {
+        kind: "block",
+        children: [newObj.alternate],
+      };
+    } else {
+      newObj.alternate = newObj.alternate ? newObj.alternate : null;
+    }
+  }
+
+  if (node.kind === "usegroup" && typeof node.name === "string") {
+    newObj.name = newObj.name.replace(/^\\/, "");
+  }
+
+  if (node.kind === "useitem") {
+    newObj.name = newObj.name.replace(/^\\/, "");
+  }
+
+  if (node.kind === "method" && node.name.kind === "identifier") {
+    newObj.name.name = normalizeMagicMethodName(newObj.name.name);
+  }
+
+  if (node.kind === "noop") {
+    return null;
+  }
+}
+
+clean.ignoredProperties = ignoredProperties;
+
+export default clean;

frontend/src/common/prettier/plugins/php/src/index.mjs

@@ -0,0 +1,173 @@
+import { doc } from "prettier";
+import LINGUIST_LANGUAGES_PHP from "linguist-languages/data/PHP";
+import LINGUIST_LANGUAGES_HTML_PHP from "linguist-languages/data/HTML_2b_PHP";
+import parse from "./parser.mjs";
+import print from "./printer.mjs";
+import clean from "./clean.mjs";
+import options from "./options.mjs";
+import {
+  handleOwnLineComment,
+  handleEndOfLineComment,
+  handleRemainingComment,
+  getCommentChildNodes,
+  canAttachComment,
+  isBlockComment,
+} from "./comments.mjs";
+import { hasPragma, insertPragma } from "./pragma.mjs";
+import { locStart, locEnd } from "./loc.mjs";
+
+const { join, hardline } = doc.builders;
+
+function createLanguage(linguistData, { extend, override }) {
+  const language = {};
+
+  for (const key in linguistData) {
+    const newKey = key === "languageId" ? "linguistLanguageId" : key;
+    language[newKey] = linguistData[key];
+  }
+
+  if (extend) {
+    for (const key in extend) {
+      language[key] = (language[key] || []).concat(extend[key]);
+    }
+  }
+
+  for (const key in override) {
+    language[key] = override[key];
+  }
+
+  return language;
+}
+
+const languages = [
+  createLanguage(LINGUIST_LANGUAGES_PHP, {
+    override: {
+      parsers: ["php"],
+      vscodeLanguageIds: ["php"],
+    },
+  }),
+  createLanguage(LINGUIST_LANGUAGES_HTML_PHP, {
+    override: {
+      parsers: ["php"],
+      vscodeLanguageIds: ["php"],
+    },
+  }),
+];
+
+const parsers = {
+  php: {
+    parse,
+    astFormat: "php",
+    locStart,
+    locEnd,
+    hasPragma,
+  },
+};
+
+const ignoredKeys = new Set([
+  "kind",
+  "loc",
+  "errors",
+  "extra",
+  "comments",
+  "leadingComments",
+  "enclosingNode",
+  "precedingNode",
+  "followingNode",
+]);
+function getVisitorKeys(node, nonTraversableKeys) {
+  return Object.keys(node).filter(
+    (key) => !nonTraversableKeys.has(key) && !ignoredKeys.has(key)
+  );
+}
+
+const printers = {
+  php: {
+    print,
+    getVisitorKeys,
+    insertPragma,
+    massageAstNode: clean,
+    getCommentChildNodes,
+    canAttachComment,
+    isBlockComment,
+    handleComments: {
+      ownLine: handleOwnLineComment,
+      endOfLine: handleEndOfLineComment,
+      remaining: handleRemainingComment,
+    },
+    willPrintOwnComments(path) {
+      const { node } = path;
+
+      return node && node.kind === "noop";
+    },
+    printComment(path) {
+      const comment = path.node;
+
+      switch (comment.kind) {
+        case "commentblock": {
+          // for now, don't touch single line block comments
+          if (!comment.value.includes("\n")) {
+            return comment.value;
+          }
+
+          const lines = comment.value.split("\n");
+          // if this is a block comment, handle indentation
+          if (
+            lines
+              .slice(1, lines.length - 1)
+              .every((line) => line.trim()[0] === "*")
+          ) {
+            return join(
+              hardline,
+              lines.map(
+                (line, index) =>
+                  (index > 0 ? " " : "") +
+                  (index < lines.length - 1 ? line.trim() : line.trimLeft())
+              )
+            );
+          }
+
+          // otherwise we can't be sure about indentation, so just print as is
+          return comment.value;
+        }
+        case "commentline": {
+          return comment.value.trimRight();
+        }
+        /* c8 ignore next 2 */
+        default:
+          throw new Error(`Not a comment: ${JSON.stringify(comment)}`);
+      }
+    },
+    hasPrettierIgnore(path) {
+      const isSimpleIgnore = (comment) =>
+        comment.value.includes("prettier-ignore") &&
+        !comment.value.includes("prettier-ignore-start") &&
+        !comment.value.includes("prettier-ignore-end");
+
+      const { node, parent: parentNode } = path;
+
+      return (
+        (node &&
+          node.kind !== "classconstant" &&
+          node.comments &&
+          node.comments.length > 0 &&
+          node.comments.some(isSimpleIgnore)) ||
+        // For proper formatting, the classconstant ignore formatting should
+        // run on the "constant" child
+        (node &&
+          node.kind === "constant" &&
+          parentNode &&
+          parentNode.kind === "classconstant" &&
+          parentNode.comments &&
+          parentNode.comments.length > 0 &&
+          parentNode.comments.some(isSimpleIgnore))
+      );
+    },
+  },
+};
+
+const defaultOptions = {
+  tabWidth: 4,
+};
+
+export { languages, printers, parsers, options, defaultOptions };

frontend/src/common/prettier/plugins/php/src/loc.mjs

@@ -0,0 +1,4 @@
+const loc = (prop) => (node) => node.loc?.[prop]?.offset;
+
+export const locStart = loc("start");
+export const locEnd = loc("end");

frontend/src/common/prettier/plugins/php/src/needs-parens.mjs

@@ -0,0 +1,250 @@
+import { getPrecedence, shouldFlatten, isBitwiseOperator } from "./util.mjs";
+
+function needsParens(path, options) {
+  const { parent } = path;
+
+  if (!parent) {
+    return false;
+  }
+
+  const { key, node } = path;
+
+  if (
+    [
+      //  No need parens for top level children of this nodes
+      "program",
+      "expressionstatement",
+      "namespace",
+      "declare",
+      "block",
+
+      // No need parens
+      "include",
+      "print",
+      "return",
+      "echo",
+    ].includes(parent.kind)
+  ) {
+    return false;
+  }
+
+  switch (node.kind) {
+    case "pre":
+    case "post":
+      if (parent.kind === "unary") {
+        return (
+          node.kind === "pre" &&
+          ((node.type === "+" && parent.type === "+") ||
+            (node.type === "-" && parent.type === "-"))
+        );
+      }
+    // else fallthrough
+    case "unary":
+      switch (parent.kind) {
+        case "unary":
+          return (
+            node.type === parent.type &&
+            (node.type === "+" || node.type === "-")
+          );
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+        case "call":
+          return key === "what";
+        case "bin":
+          return parent.type === "**" && key === "left";
+        default:
+          return false;
+      }
+    case "bin": {
+      switch (parent.kind) {
+        case "assign":
+        case "retif":
+          return ["and", "xor", "or"].includes(node.type);
+        case "silent":
+        case "cast":
+          // TODO: bug https://github.com/glayzzle/php-parser/issues/172
+          return node.parenthesizedExpression;
+        case "pre":
+        case "post":
+        case "unary":
+          return true;
+        case "call":
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+          return key === "what";
+        case "bin": {
+          const po = parent.type;
+          const pp = getPrecedence(po);
+          const no = node.type;
+          const np = getPrecedence(no);
+
+          if (pp > np) {
+            return true;
+          }
+
+          if (po === "||" && no === "&&") {
+            return true;
+          }
+
+          if (pp === np && key === "right") {
+            return true;
+          }
+
+          if (pp === np && !shouldFlatten(po, no)) {
+            return true;
+          }
+
+          if (pp < np && no === "%") {
+            return po === "+" || po === "-";
+          }
+
+          // Add parenthesis when working with bitwise operators
+          // It's not stricly needed but helps with code understanding
+          if (isBitwiseOperator(po)) {
+            return true;
+          }
+
+          return false;
+        }
+
+        default:
+          return false;
+      }
+    }
+    case "propertylookup":
+    case "nullsafepropertylookup":
+    case "staticlookup": {
+      switch (parent.kind) {
+        case "call":
+          return key === "what" && node.parenthesizedExpression;
+
+        default:
+          return false;
+      }
+    }
+    case "clone":
+    case "new": {
+      const requiresParens =
+        node.kind === "clone" ||
+        (node.kind === "new" && options.phpVersion < 8.4);
+      switch (parent.kind) {
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+        case "call":
+          return key === "what" && requiresParens;
+        default:
+          return false;
+      }
+    }
+    case "yield": {
+      switch (parent.kind) {
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+        case "call":
+          return key === "what";
+
+        case "retif":
+          return key === "test";
+
+        default:
+          return !!(node.key || node.value);
+      }
+    }
+    case "assign": {
+      if (
+        parent.kind === "for" &&
+        (parent.init.includes(node) || parent.increment.includes(node))
+      ) {
+        return false;
+      } else if (parent.kind === "assign") {
+        return false;
+      } else if (parent.kind === "static") {
+        return false;
+      } else if (
+        ["if", "do", "while", "foreach", "switch"].includes(parent.kind)
+      ) {
+        return false;
+      } else if (parent.kind === "silent") {
+        return false;
+      } else if (parent.kind === "call") {
+        return false;
+      }
+
+      return true;
+    }
+    case "retif":
+      switch (parent.kind) {
+        case "cast":
+          return true;
+        case "unary":
+        case "bin":
+        case "retif":
+          if (key === "test" && !parent.trueExpr) {
+            return false;
+          }
+
+          return true;
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+        case "call":
+          return key === "what";
+
+        default:
+          return false;
+      }
+    case "closure":
+      switch (parent.kind) {
+        case "call":
+          return key === "what";
+
+        // https://github.com/prettier/plugin-php/issues/1675
+        case "propertylookup":
+        case "nullsafepropertylookup":
+          return true;
+
+        default:
+          return false;
+      }
+    case "silence":
+    case "cast":
+      // TODO: bug https://github.com/glayzzle/php-parser/issues/172
+      return node.parenthesizedExpression;
+    // else fallthrough
+    case "string":
+    case "array":
+      switch (parent.kind) {
+        case "propertylookup":
+        case "nullsafepropertylookup":
+        case "staticlookup":
+        case "offsetlookup":
+        case "call":
+          if (
+            ["string", "array"].includes(node.kind) &&
+            parent.kind === "offsetlookup"
+          ) {
+            return false;
+          }
+
+          return key === "what";
+        default:
+          return false;
+      }
+    case "print":
+    case "include":
+      return parent.kind === "bin";
+  }
+
+  return false;
+}
+
+export default needsParens;

frontend/src/common/prettier/plugins/php/src/options.mjs

@@ -0,0 +1,69 @@
+const CATEGORY_PHP = "PHP";
+
+// prettier-ignore
+const SUPPORTED_PHP_VERSIONS = [
+  5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6,
+  7.0, 7.1, 7.2, 7.3, 7.4,
+  8.0, 8.1, 8.2, 8.3, 8.4,
+];
+
+export const LATEST_SUPPORTED_PHP_VERSION = Math.max(...SUPPORTED_PHP_VERSIONS);
+
+/**
+ * Resolve the PHP version to a number based on the provided options.
+ */
+export function resolvePhpVersion(options) {
+  if (!options) {
+    return;
+  }
+  
+  if (options.phpVersion === "auto" || options.phpVersion === "composer") {
+    options.phpVersion = LATEST_SUPPORTED_PHP_VERSION;
+  } else {
+    options.phpVersion = parseFloat(options.phpVersion);
+  }
+}
+
+export default {
+  phpVersion: {
+    since: "0.13.0",
+    category: CATEGORY_PHP,
+    type: "choice",
+    default: "auto",
+    description: "Minimum target PHP version.",
+    choices: [
+      ...SUPPORTED_PHP_VERSIONS.map((v) => ({ value: v.toFixed(1) })),
+      {
+        value: "auto",
+        description: `Use latest PHP Version (${LATEST_SUPPORTED_PHP_VERSION})`,
+      },
+    ],
+  },
+  trailingCommaPHP: {
+    since: "0.0.0",
+    category: CATEGORY_PHP,
+    type: "boolean",
+    default: true,
+    description: "Print trailing commas wherever possible when multi-line.",
+  },
+  braceStyle: {
+    since: "0.10.0",
+    category: CATEGORY_PHP,
+    type: "choice",
+    default: "per-cs",
+    description:
+      "Print one space or newline for code blocks (classes and functions).",
+    choices: [
+      { value: "psr-2", description: "(deprecated) Use per-cs" },
+      { value: "per-cs", description: "Use the PER Coding Style brace style." },
+      { value: "1tbs", description: "Use 1tbs brace style." },
+    ],
+  },
+  singleQuote: {
+    since: "0.0.0",
+    category: CATEGORY_PHP,
+    type: "boolean",
+    default: false,
+    description: "Use single quotes instead of double quotes.",
+  },
+};

frontend/src/common/prettier/plugins/php/src/parser.mjs

@@ -0,0 +1,67 @@
+import engine from "php-parser";
+import { LATEST_SUPPORTED_PHP_VERSION } from "./options.mjs";
+import { resolvePhpVersion } from "./options.mjs";
+
+function parse(text, opts) {
+  const inMarkdown = opts && opts.parentParser === "markdown";
+
+  if (!text && inMarkdown) {
+    return "";
+  }
+  resolvePhpVersion(opts);
+
+  // Todo https://github.com/glayzzle/php-parser/issues/170
+  text = text.replace(/\?>\n<\?/g, "?>\n___PSEUDO_INLINE_PLACEHOLDER___<?");
+
+  // initialize a new parser instance
+  const parser = new engine({
+    parser: {
+      extractDoc: true,
+      version: `${LATEST_SUPPORTED_PHP_VERSION}`,
+    },
+    ast: {
+      withPositions: true,
+      withSource: true,
+    },
+  });
+
+  const hasOpenPHPTag = text.indexOf("<?php") !== -1;
+  const parseAsEval = inMarkdown && !hasOpenPHPTag;
+
+  let ast;
+  try {
+    ast = parseAsEval ? parser.parseEval(text) : parser.parseCode(text);
+  } catch (err) {
+    if (err instanceof SyntaxError && "lineNumber" in err) {
+      err.loc = {
+        start: {
+          line: err.lineNumber,
+          column: err.columnNumber,
+        },
+      };
+
+      delete err.lineNumber;
+      delete err.columnNumber;
+    }
+
+    throw err;
+  }
+
+  ast.extra = {
+    parseAsEval,
+  };
+
+  // https://github.com/glayzzle/php-parser/issues/155
+  // currently inline comments include the line break at the end, we need to
+  // strip those out and update the end location for each comment manually
+  ast.comments.forEach((comment) => {
+    if (comment.value[comment.value.length - 1] === "\n") {
+      comment.value = comment.value.slice(0, -1);
+      comment.loc.end.offset = comment.loc.end.offset - 1;
+    }
+  });
+
+  return ast;
+}
+
+export default parse;

frontend/src/common/prettier/plugins/php/src/pragma.mjs

@@ -0,0 +1,92 @@
+import { memoize } from "./util.mjs";
+import parse from "./parser.mjs";
+
+const reHasPragma = /@prettier|@format/;
+
+const getPageLevelDocBlock = memoize((text) => {
+  const parsed = parse(text);
+
+  const [firstChild] = parsed.children;
+  const [firstDocBlock] = parsed.comments.filter(
+    (el) => el.kind === "commentblock"
+  );
+
+  if (
+    firstChild &&
+    firstDocBlock &&
+    firstDocBlock.loc.start.line < firstChild.loc.start.line
+  ) {
+    return firstDocBlock;
+  }
+});
+
+function hasPragma(text) {
+  // fast path optimization - check if the pragma shows up in the file at all
+  if (!reHasPragma.test(text)) {
+    return false;
+  }
+
+  const pageLevelDocBlock = getPageLevelDocBlock(text);
+
+  if (pageLevelDocBlock) {
+    const { value } = pageLevelDocBlock;
+
+    return reHasPragma.test(value);
+  }
+
+  return false;
+}
+
+function injectPragma(docblock) {
+  let lines = docblock.split("\n");
+
+  if (lines.length === 1) {
+    // normalize to multiline for simplicity
+    const [, line] = /\/*\*\*(.*)\*\//.exec(lines[0]);
+
+    lines = ["/**", ` * ${line.trim()}`, " */"];
+  }
+
+  // find the first @pragma
+  // if there happens to be one on the opening line, just put it on the next line.
+  const pragmaIndex = lines.findIndex((line) => /@\S/.test(line)) || 1;
+
+  // not found => index == -1, which conveniently will splice 1 from the end.
+  lines.splice(pragmaIndex, 0, " * @format");
+
+  return lines.join("\n");
+}
+
+function insertPragma(text) {
+  const pageLevelDocBlock = getPageLevelDocBlock(text);
+
+  if (pageLevelDocBlock) {
+    const {
+      start: { offset: startOffset },
+      end: { offset: endOffset },
+    } = pageLevelDocBlock.loc;
+    const before = text.substring(0, startOffset);
+    const after = text.substring(endOffset);
+
+    return `${before}${injectPragma(pageLevelDocBlock.value, text)}${after}`;
+  }
+
+  const openTag = "<?php";
+
+  if (!text.startsWith(openTag)) {
+    // bail out
+    return text;
+  }
+
+  const splitAt = openTag.length;
+  const phpTag = text.substring(0, splitAt);
+  const after = text.substring(splitAt);
+
+  return `${phpTag}
+/** 
+ * @format 
+ */
+${after}`;
+}
+
+export { hasPragma, insertPragma };

frontend/src/common/prettier/plugins/php/src/util.mjs

@@ -0,0 +1,743 @@
+import { util as prettierUtil } from "prettier";
+import { locStart } from "./loc.mjs";
+
+const { hasNewline, skipEverythingButNewLine, skipNewline } = prettierUtil;
+
+function printNumber(rawNumber) {
+  return (
+    rawNumber
+      .toLowerCase()
+      // Remove unnecessary plus and zeroes from scientific notation.
+      .replace(/^([+-]?[\d.]+e)(?:\+|(-))?0*(\d)/, "$1$2$3")
+      // Remove unnecessary scientific notation (1e0).
+      .replace(/^([+-]?[\d.]+)e[+-]?0+$/, "$1")
+      // Make sure numbers always start with a digit.
+      .replace(/^([+-])?\./, "$10.")
+      // Remove extraneous trailing decimal zeroes.
+      .replace(/(\.\d+?)0+(?=e|$)/, "$1")
+      // Remove unnecessary .e notation
+      .replace(/\.(?=e)/, "")
+  );
+}
+
+// http://php.net/manual/en/language.operators.precedence.php
+const PRECEDENCE = new Map(
+  [
+    ["or"],
+    ["xor"],
+    ["and"],
+    [
+      "=",
+      "+=",
+      "-=",
+      "*=",
+      "**=",
+      "/=",
+      ".=",
+      "%=",
+      "&=",
+      "|=",
+      "^=",
+      "<<=",
+      ">>=",
+    ],
+    ["??"],
+    ["||"],
+    ["&&"],
+    ["|"],
+    ["^"],
+    ["&"],
+    ["==", "===", "!=", "!==", "<>", "<=>"],
+    ["<", ">", "<=", ">="],
+    [">>", "<<"],
+    ["+", "-", "."],
+    ["*", "/", "%"],
+    ["!"],
+    ["instanceof"],
+    ["++", "--", "~"],
+    ["**"],
+  ].flatMap((operators, index) =>
+    operators.map((operator) => [operator, index])
+  )
+);
+function getPrecedence(operator) {
+  return PRECEDENCE.get(operator);
+}
+
+const equalityOperators = ["==", "!=", "===", "!==", "<>", "<=>"];
+const multiplicativeOperators = ["*", "/", "%"];
+const bitshiftOperators = [">>", "<<"];
+
+function isBitwiseOperator(operator) {
+  return (
+    !!bitshiftOperators[operator] ||
+    operator === "|" ||
+    operator === "^" ||
+    operator === "&"
+  );
+}
+
+function shouldFlatten(parentOp, nodeOp) {
+  if (getPrecedence(nodeOp) !== getPrecedence(parentOp)) {
+    return false;
+  }
+
+  // ** is right-associative
+  // x ** y ** z --> x ** (y ** z)
+  if (parentOp === "**") {
+    return false;
+  }
+
+  // x == y == z --> (x == y) == z
+  if (
+    equalityOperators.includes(parentOp) &&
+    equalityOperators.includes(nodeOp)
+  ) {
+    return false;
+  }
+
+  // x * y % z --> (x * y) % z
+  if (
+    (nodeOp === "%" && multiplicativeOperators.includes(parentOp)) ||
+    (parentOp === "%" && multiplicativeOperators.includes(nodeOp))
+  ) {
+    return false;
+  }
+
+  // x * y / z --> (x * y) / z
+  // x / y * z --> (x / y) * z
+  if (
+    nodeOp !== parentOp &&
+    multiplicativeOperators.includes(nodeOp) &&
+    multiplicativeOperators.includes(parentOp)
+  ) {
+    return false;
+  }
+
+  // x << y << z --> (x << y) << z
+  if (
+    bitshiftOperators.includes(parentOp) &&
+    bitshiftOperators.includes(nodeOp)
+  ) {
+    return false;
+  }
+
+  return true;
+}
+
+function nodeHasStatement(node) {
+  return [
+    "block",
+    "program",
+    "namespace",
+    "class",
+    "enum",
+    "interface",
+    "trait",
+    "traituse",
+    "declare",
+  ].includes(node.kind);
+}
+
+function getBodyFirstChild({ body }) {
+  if (!body) {
+    return null;
+  }
+  if (body.kind === "block") {
+    body = body.children;
+  }
+  return body[0];
+}
+
+function getNodeListProperty(node) {
+  const body = node.children || node.body || node.adaptations;
+  return Array.isArray(body) ? body : null;
+}
+
+function getLast(arr) {
+  if (arr.length > 0) {
+    return arr[arr.length - 1];
+  }
+  return null;
+}
+
+function getPenultimate(arr) {
+  if (arr.length > 1) {
+    return arr[arr.length - 2];
+  }
+  return null;
+}
+
+function isFirstChildrenInlineNode(path) {
+  const { node } = path;
+
+  if (node.kind === "program") {
+    const children = getNodeListProperty(node);
+
+    if (!children || children.length === 0) {
+      return false;
+    }
+
+    return children[0].kind === "inline";
+  }
+
+  if (node.kind === "switch") {
+    if (!node.body) {
+      return false;
+    }
+
+    const children = getNodeListProperty(node.body);
+
+    if (children.length === 0) {
+      return false;
+    }
+
+    const [firstCase] = children;
+
+    if (!firstCase.body) {
+      return false;
+    }
+
+    const firstCaseChildren = getNodeListProperty(firstCase.body);
+
+    if (firstCaseChildren.length === 0) {
+      return false;
+    }
+
+    return firstCaseChildren[0].kind === "inline";
+  }
+
+  const firstChild = getBodyFirstChild(node);
+
+  if (!firstChild) {
+    return false;
+  }
+
+  return firstChild.kind === "inline";
+}
+
+function isDocNode(node) {
+  return (
+    node.kind === "nowdoc" ||
+    (node.kind === "encapsed" && node.type === "heredoc")
+  );
+}
+
+/**
+ * Heredoc/Nowdoc nodes need a trailing linebreak if they
+ * appear as function arguments or array elements
+ */
+function docShouldHaveTrailingNewline(path, recurse = 0) {
+  const node = path.getNode(recurse);
+  const parent = path.getNode(recurse + 1);
+  const parentParent = path.getNode(recurse + 2);
+
+  if (!parent) {
+    return false;
+  }
+
+  if (
+    (parentParent &&
+      ["call", "new", "echo"].includes(parentParent.kind) &&
+      !["call", "array"].includes(parent.kind)) ||
+    parent.kind === "parameter"
+  ) {
+    const lastIndex = parentParent.arguments.length - 1;
+    const index = parentParent.arguments.indexOf(parent);
+
+    return index !== lastIndex;
+  }
+
+  if (parentParent && parentParent.kind === "for") {
+    const initIndex = parentParent.init.indexOf(parent);
+
+    if (initIndex !== -1) {
+      return initIndex !== parentParent.init.length - 1;
+    }
+
+    const testIndex = parentParent.test.indexOf(parent);
+
+    if (testIndex !== -1) {
+      return testIndex !== parentParent.test.length - 1;
+    }
+
+    const incrementIndex = parentParent.increment.indexOf(parent);
+
+    if (incrementIndex !== -1) {
+      return incrementIndex !== parentParent.increment.length - 1;
+    }
+  }
+
+  if (parent.kind === "bin") {
+    return (
+      parent.left === node || docShouldHaveTrailingNewline(path, recurse + 1)
+    );
+  }
+
+  if (parent.kind === "case" && parent.test === node) {
+    return true;
+  }
+
+  if (parent.kind === "staticvariable") {
+    const lastIndex = parentParent.variables.length - 1;
+    const index = parentParent.variables.indexOf(parent);
+
+    return index !== lastIndex;
+  }
+
+  if (parent.kind === "entry") {
+    if (parent.key === node) {
+      return true;
+    }
+
+    const lastIndex = parentParent.items.length - 1;
+    const index = parentParent.items.indexOf(parent);
+
+    return index !== lastIndex;
+  }
+
+  if (["call", "new"].includes(parent.kind)) {
+    const lastIndex = parent.arguments.length - 1;
+    const index = parent.arguments.indexOf(node);
+
+    return index !== lastIndex;
+  }
+
+  if (parent.kind === "echo") {
+    const lastIndex = parent.expressions.length - 1;
+    const index = parent.expressions.indexOf(node);
+
+    return index !== lastIndex;
+  }
+
+  if (parent.kind === "array") {
+    const lastIndex = parent.items.length - 1;
+    const index = parent.items.indexOf(node);
+
+    return index !== lastIndex;
+  }
+
+  if (parent.kind === "retif") {
+    return docShouldHaveTrailingNewline(path, recurse + 1);
+  }
+
+  return false;
+}
+
+function lineShouldEndWithSemicolon(path) {
+  const { node, parent: parentNode } = path;
+  if (!parentNode) {
+    return false;
+  }
+  // for single line control structures written in a shortform (ie without a block),
+  // we need to make sure the single body node gets a semicolon
+  if (
+    ["for", "foreach", "while", "do", "if", "switch"].includes(
+      parentNode.kind
+    ) &&
+    node.kind !== "block" &&
+    node.kind !== "if" &&
+    (parentNode.body === node || parentNode.alternate === node)
+  ) {
+    return true;
+  }
+  if (!nodeHasStatement(parentNode)) {
+    return false;
+  }
+  if (node.kind === "echo" && node.shortForm) {
+    return false;
+  }
+  if (node.kind === "traituse") {
+    return !node.adaptations;
+  }
+  if (node.kind === "method" && node.isAbstract) {
+    return true;
+  }
+  if (node.kind === "method") {
+    const { parent } = path;
+    if (parent && parent.kind === "interface") {
+      return true;
+    }
+  }
+  return [
+    "expressionstatement",
+    "do",
+    "usegroup",
+    "classconstant",
+    "propertystatement",
+    "traitprecedence",
+    "traitalias",
+    "goto",
+    "constantstatement",
+    "enumcase",
+    "global",
+    "static",
+    "echo",
+    "unset",
+    "return",
+    "break",
+    "continue",
+    "throw",
+  ].includes(node.kind);
+}
+
+function fileShouldEndWithHardline(path) {
+  const { node } = path;
+  const isProgramNode = node.kind === "program";
+  const lastNode = node.children && getLast(node.children);
+
+  if (!isProgramNode) {
+    return false;
+  }
+
+  if (lastNode && ["halt", "inline"].includes(lastNode.kind)) {
+    return false;
+  }
+
+  if (
+    lastNode &&
+    (lastNode.kind === "declare" || lastNode.kind === "namespace")
+  ) {
+    const lastNestedNode =
+      lastNode.children.length > 0 && getLast(lastNode.children);
+
+    if (lastNestedNode && ["halt", "inline"].includes(lastNestedNode.kind)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function maybeStripLeadingSlashFromUse(name) {
+  const nameWithoutLeadingSlash = name.replace(/^\\/, "");
+  if (nameWithoutLeadingSlash.indexOf("\\") !== -1) {
+    return nameWithoutLeadingSlash;
+  }
+  return name;
+}
+
+function hasDanglingComments(node) {
+  return (
+    node.comments &&
+    node.comments.some((comment) => !comment.leading && !comment.trailing)
+  );
+}
+
+function isLookupNode(node) {
+  return (
+    node.kind === "propertylookup" ||
+    node.kind === "nullsafepropertylookup" ||
+    node.kind === "staticlookup" ||
+    node.kind === "offsetlookup"
+  );
+}
+
+function shouldPrintHardLineAfterStartInControlStructure(path) {
+  const { node } = path;
+
+  if (["try", "catch"].includes(node.kind)) {
+    return false;
+  }
+
+  return isFirstChildrenInlineNode(path);
+}
+
+function shouldPrintHardLineBeforeEndInControlStructure(path) {
+  const { node } = path;
+
+  if (["try", "catch"].includes(node.kind)) {
+    return true;
+  }
+
+  if (node.kind === "switch") {
+    const children = getNodeListProperty(node.body);
+
+    if (children.length === 0) {
+      return true;
+    }
+
+    const lastCase = getLast(children);
+
+    if (!lastCase.body) {
+      return true;
+    }
+
+    const childrenInCase = getNodeListProperty(lastCase.body);
+
+    if (childrenInCase.length === 0) {
+      return true;
+    }
+
+    return childrenInCase[0].kind !== "inline";
+  }
+
+  return !isFirstChildrenInlineNode(path);
+}
+
+function getAlignment(text) {
+  const lines = text.split("\n");
+  const lastLine = lines.pop();
+
+  return lastLine.length - lastLine.trimLeft().length + 1;
+}
+
+function isProgramLikeNode(node) {
+  return ["program", "declare", "namespace"].includes(node.kind);
+}
+
+function isReferenceLikeNode(node) {
+  return [
+    "name",
+    "parentreference",
+    "selfreference",
+    "staticreference",
+  ].includes(node.kind);
+}
+
+// Return `logical` value for `bin` node containing `||` or `&&` type otherwise return kind of node.
+// Require for grouping logical and binary nodes in right way.
+function getNodeKindIncludingLogical(node) {
+  if (node.kind === "bin" && ["||", "&&"].includes(node.type)) {
+    return "logical";
+  }
+
+  return node.kind;
+}
+
+/**
+ * Check if string can safely be converted from double to single quotes and vice-versa, i.e.
+ *
+ * - no embedded variables ("foo $bar")
+ * - no linebreaks
+ * - no special characters like \n, \t, ...
+ * - no octal/hex/unicode characters
+ *
+ * See https://php.net/manual/en/language.types.string.php#language.types.string.syntax.double
+ */
+function useDoubleQuote(node, options) {
+  if (node.isDoubleQuote === options.singleQuote) {
+    // We have a double quote and the user passed singleQuote:true, or the other way around.
+    const rawValue = node.raw.slice(node.raw[0] === "b" ? 2 : 1, -1);
+    const isComplex = rawValue.match(
+      /\\([$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3}|u{([0-9a-fA-F]+)})|\r?\n|'|"|\$/
+    );
+    return node.isDoubleQuote ? isComplex : !isComplex;
+  }
+  return node.isDoubleQuote;
+}
+
+function hasEmptyBody(path, name = "body") {
+  const { node } = path;
+
+  return (
+    node[name] &&
+    node[name].children &&
+    node[name].children.length === 0 &&
+    (!node[name].comments || node[name].comments.length === 0)
+  );
+}
+
+function isNextLineEmptyAfterNamespace(text, node) {
+  let idx = locStart(node);
+  idx = skipEverythingButNewLine(text, idx);
+  idx = skipNewline(text, idx);
+  return hasNewline(text, idx);
+}
+
+function shouldPrintHardlineBeforeTrailingComma(lastElem) {
+  if (
+    lastElem.kind === "nowdoc" ||
+    (lastElem.kind === "encapsed" && lastElem.type === "heredoc")
+  ) {
+    return true;
+  }
+
+  if (
+    lastElem.kind === "entry" &&
+    (lastElem.value.kind === "nowdoc" ||
+      (lastElem.value.kind === "encapsed" && lastElem.value.type === "heredoc"))
+  ) {
+    return true;
+  }
+
+  return false;
+}
+
+function getAncestorCounter(path, typeOrTypes) {
+  const types = [].concat(typeOrTypes);
+  let counter = -1;
+  let ancestorNode;
+  while ((ancestorNode = path.getParentNode(++counter))) {
+    if (types.indexOf(ancestorNode.kind) !== -1) {
+      return counter;
+    }
+  }
+  return -1;
+}
+
+function getAncestorNode(path, typeOrTypes) {
+  const counter = getAncestorCounter(path, typeOrTypes);
+  return counter === -1 ? null : path.getParentNode(counter);
+}
+
+const magicMethods = [
+  "__construct",
+  "__destruct",
+  "__call",
+  "__callStatic",
+  "__get",
+  "__set",
+  "__isset",
+  "__unset",
+  "__sleep",
+  "__wakeup",
+  "__toString",
+  "__invoke",
+  "__set_state",
+  "__clone",
+  "__debugInfo",
+];
+const magicMethodsMap = new Map(
+  magicMethods.map((name) => [name.toLowerCase(), name])
+);
+
+function normalizeMagicMethodName(name) {
+  const loweredName = name.toLowerCase();
+
+  if (magicMethodsMap.has(loweredName)) {
+    return magicMethodsMap.get(loweredName);
+  }
+
+  return name;
+}
+
+/**
+ * @param {string[]} kindsArray
+ * @returns {(node: Node | Comment) => Boolean}
+ */
+function createTypeCheckFunction(kindsArray) {
+  const kinds = new Set(kindsArray);
+  return (node) => kinds.has(node?.kind);
+}
+
+const isSingleWordType = createTypeCheckFunction([
+  "variadicplaceholder",
+  "namedargument",
+  "nullkeyword",
+  "identifier",
+  "parameter",
+  "variable",
+  "variadic",
+  "boolean",
+  "literal",
+  "number",
+  "string",
+  "clone",
+  "cast",
+]);
+
+const isArrayExpression = createTypeCheckFunction(["array"]);
+const isCallLikeExpression = createTypeCheckFunction([
+  "nullsafepropertylookup",
+  "propertylookup",
+  "staticlookup",
+  "offsetlookup",
+  "call",
+  "new",
+]);
+const isArrowFuncExpression = createTypeCheckFunction(["arrowfunc"]);
+
+function getChainParts(node, prev = []) {
+  const parts = prev;
+  if (isCallLikeExpression(node)) {
+    parts.push(node);
+  }
+
+  if (!node.what) {
+    return parts;
+  }
+
+  return getChainParts(node.what, parts);
+}
+
+function isSimpleCallArgument(node, depth = 2) {
+  if (depth <= 0) {
+    return false;
+  }
+
+  const isChildSimple = (child) => isSimpleCallArgument(child, depth - 1);
+
+  if (isSingleWordType(node)) {
+    return true;
+  }
+
+  if (isArrayExpression(node)) {
+    return node.items.every((x) => x === null || isChildSimple(x));
+  }
+
+  if (isCallLikeExpression(node)) {
+    const parts = getChainParts(node);
+    parts.unshift();
+
+    return (
+      parts.length <= depth &&
+      parts.every((node) =>
+        isLookupNode(node)
+          ? isChildSimple(node.offset)
+          : node.arguments.every(isChildSimple)
+      )
+    );
+  }
+
+  if (isArrowFuncExpression(node)) {
+    return (
+      node.arguments.length <= depth && node.arguments.every(isChildSimple)
+    );
+  }
+
+  return false;
+}
+
+function memoize(fn) {
+  const cache = new Map();
+  return (key) => {
+    if (!cache.has(key)) {
+      cache.set(key, fn(key));
+    }
+    return cache.get(key);
+  };
+}
+
+export {
+  printNumber,
+  getPrecedence,
+  isBitwiseOperator,
+  shouldFlatten,
+  nodeHasStatement,
+  getLast,
+  getPenultimate,
+  getBodyFirstChild,
+  lineShouldEndWithSemicolon,
+  fileShouldEndWithHardline,
+  maybeStripLeadingSlashFromUse,
+  hasDanglingComments,
+  docShouldHaveTrailingNewline,
+  isLookupNode,
+  isFirstChildrenInlineNode,
+  shouldPrintHardLineAfterStartInControlStructure,
+  shouldPrintHardLineBeforeEndInControlStructure,
+  getAlignment,
+  isProgramLikeNode,
+  isReferenceLikeNode,
+  getNodeKindIncludingLogical,
+  useDoubleQuote,
+  hasEmptyBody,
+  isNextLineEmptyAfterNamespace,
+  shouldPrintHardlineBeforeTrailingComma,
+  isDocNode,
+  getAncestorNode,
+  normalizeMagicMethodName,
+  isSimpleCallArgument,
+  memoize,
+};

frontend/src/common/prettier/plugins/rust/format/comments.ts

@@ -0,0 +1,824 @@
+import { CommentOrDocComment, LocArray, Node, NodeType, NodeWithBodyOrCases } from "jinx-rust";
+import {
+	end,
+	getBodyOrCases,
+	getLastParameter,
+	hasOuterAttributes,
+	isInner,
+	is_Attribute,
+	is_AttributeOrDocComment,
+	is_BlockCommentKind,
+	is_BlockCommentNode,
+	is_Comment,
+	is_CommentOrDocComment,
+	is_ExpressionWithBodyOrCases,
+	is_ExternSpecifier,
+	is_FlowControlExpression,
+	is_FunctionDeclaration,
+	is_FunctionNode,
+	is_IfBlockExpression,
+	is_LineCommentKind,
+	is_LineCommentNode,
+	is_LocArray,
+	is_MacroRule,
+	is_NodeWithBodyOrCases,
+	is_ReassignmentNode,
+	is_StatementNode,
+	is_StructLiteralProperty,
+	is_StructLiteralPropertySpread,
+	nisAnyOf,
+	ownStart,
+	start,
+} from "jinx-rust/utils";
+import { is_CallExpression_or_CallLikeMacroInvocation } from "../transform";
+import { Narrow, assert, exit, iLast, last_of, maybe_last_of } from "../utils/common";
+import { is_MemberAccessLike, is_xVariableEqualishLike } from "./core";
+import {
+	AnyComment,
+	CustomOptions,
+	DCM,
+	Doc,
+	MutatedAttribute,
+	NodeWithComments,
+	PrettierCommentInfo,
+	breakParent,
+	cursor,
+	hardline,
+	indent,
+	join,
+	line,
+	lineSuffix,
+	literalline,
+} from "./external";
+import { assertPathAtNode, canAttachComment, getAllComments, getContext, getNode, getOptions, pathCallEach } from "./plugin";
+import { shouldPrintOuterAttributesAbove } from "./styling";
+
+function addCommentHelper(node: Node, comment: AnyComment, leading = false, trailing = false) {
+	__DEV__: assert(!handled(comment));
+	((node as NodeWithComments<Node>).comments ??= []).push(comment);
+	(comment.leading = leading), (comment.trailing = trailing), (comment.printed = false);
+}
+
+function addLeadingComment(node: Node, comment: AnyComment) {
+	addCommentHelper(node, comment, true);
+}
+function addDanglingComment(node: Node, comment: AnyComment, marker: DCM) {
+	addCommentHelper(node, comment);
+	comment.marker = marker;
+}
+function addTrailingComment(node: Node, comment: AnyComment) {
+	addCommentHelper(node, comment, false, true);
+}
+export function setPrettierIgnoreTarget(node: Node, comment: AnyComment) {
+	__DEV__: Narrow<Node & { prettierIgnore?: true }>(node), assert(isPrettierIgnoreComment(comment) || isPrettierIgnoreAttribute(comment));
+	comment.unignore = true;
+	node.prettierIgnore = true;
+}
+
+function hasComments<T extends Node>(node: T): node is NodeWithComments<T> {
+	return "comments" in node && node.comments.length > 0;
+}
+
+export function printDanglingComments(enclosingNode: Node, sameIndent: boolean, marker?: DCM) {
+	if (hasComments(enclosingNode)) {
+		const printed: Doc[] = [];
+		pathCallEach(enclosingNode, "comments", (comment) => {
+			if (isDangling(comment) && (!marker || comment.marker === marker)) {
+				printed.push(printComment(comment));
+			}
+		});
+		if (printed.length > 0) {
+			return sameIndent //
+				? join(hardline, printed)
+				: indent([hardline, join(hardline, printed)]);
+		}
+	}
+	return "";
+}
+
+export function needsHardlineAfterDanglingComment(node: Node) {
+	if (!hasComment(node)) return false;
+	const lastDanglingComment = maybe_last_of(getComments(node, CF.Dangling));
+	return lastDanglingComment && is_LineCommentNode(lastDanglingComment);
+}
+export function setDidPrintComment(comment: AnyComment) {
+	comment.printed = true;
+}
+
+function printComment(comment: AnyComment) {
+	__DEV__: assertPathAtNode("printComment", comment);
+	__DEV__: assert(handled(comment), `Assertion failed: Comment was not printed at ${comment.loc.url()}`, comment);
+	setDidPrintComment(comment);
+	return getContext().options.printer.printComment!(getContext().path as any, getOptions());
+}
+
+export function isPreviousLineEmpty(node: Node) {
+	let index = start(node) - 1;
+	index = skipSpaces(index, true) as number;
+	index = skipNewline(index, true) as number;
+	index = skipSpaces(index, true) as number;
+	return index !== skipNewline(index, true);
+}
+export function hasBreaklineBefore(node: Node) {
+	return hasNewline(start(node) - 1, true);
+}
+
+export function hasBreaklineAfter(node: Node) {
+	return hasNewline(end(node));
+}
+
+export function printCommentsSeparately(ignored?: Set<AnyComment>) {
+	const node = getNode();
+	__DEV__: Narrow<Node & { comments?: AnyComment[] }>(node);
+
+	const leading: Doc[] = [];
+	const trailing: Doc[] = [];
+	let hasTrailingLineComment = false;
+	let hadLeadingBlockComment = false;
+
+	if ("comments" in node) {
+		pathCallEach(node, "comments", (comment) => {
+			if (ignored?.has(comment)) {
+				return;
+			} else if (isLeading(comment)) {
+				leading.push(printLeadingComment(comment));
+			} else if (isTrailing(comment)) {
+				trailing.push(printTrailingComment(comment));
+			}
+		});
+	}
+
+	if (node === getOptions().cursorNode) {
+		leading.unshift(cursor);
+		trailing.push(cursor);
+	}
+
+	return (leading.length | trailing.length) > 0 ? { leading, trailing } : ({ leading: "", trailing: "" } as const);
+
+	function printLeadingComment(comment: AnyComment) {
+		if (is_Attribute(comment) && !comment.inner) {
+			const printed = printComment(comment);
+			return [printed, " "];
+		}
+		hadLeadingBlockComment ||= is_BlockCommentKind(comment) && hasBreaklineBefore(comment);
+		return [
+			printComment(comment),
+			is_BlockCommentKind(comment)
+				? hasBreaklineAfter(comment) //
+					? hadLeadingBlockComment
+						? hardline
+						: line
+					: " "
+				: hardline,
+			hasNewline(skipNewline(skipSpaces(end(comment)))) ? hardline : "",
+		];
+	}
+
+	function printTrailingComment(comment: AnyComment) {
+		const printed = printComment(comment);
+		return hasBreaklineBefore(comment)
+			? lineSuffix([hardline, isPreviousLineEmpty(comment) ? hardline : "", printed])
+			: is_BlockCommentNode(comment)
+			? [" ", printed]
+			: lineSuffix([" ", printed, hasTrailingLineComment === (hasTrailingLineComment = true) ? hardline : breakParent]);
+	}
+}
+
+export function getPostLeadingComment(comment: AnyComment) {
+	// console.log(comment.loc.url());
+	// is_BlockCommentKind(comment)
+	// 	? hasBreaklineAfter(comment) //
+	// 		? hasBreaklineBefore(comment)
+	// 			? hardline
+	// 			: line
+	// 		: " "
+	// 	: hardline,
+	return hasNewline(skipNewline(skipSpaces(end(comment)))) ? hardline : "";
+}
+
+export function withComments<D extends Doc>(node: Node, printed: D, ignored?: Set<AnyComment>): D | Doc[] {
+	__DEV__: assertPathAtNode("withComments", node);
+	const { leading, trailing } = printCommentsSeparately(ignored);
+	return leading || trailing ? [...leading!, printed, ...trailing!] : printed;
+	// return needsOuterParens(node) ? group(["(", indent([softline, parts]), softline, ")"]) : parts;
+	// return parts;
+}
+export function getComments(node: Node, ...args: Parameters<typeof getCommentTestFunction>): AnyComment[] {
+	__DEV__: Narrow<Node & { comments?: AnyComment[] }>(node);
+	// if (!node || !node.comments) return [];
+	// if (args.length === 0) return node.comments;
+	// return args.length > 0 ? node.comments.filter(getCommentTestFunction(...args)) : node.comments;
+	return node && node.comments //
+		? args.length > 0
+			? node.comments.filter(getCommentTestFunction(...args))
+			: node.comments
+		: [];
+}
+
+export function getFirstComment(node: Node, flags: CF, fn?: (comment: AnyComment) => boolean): AnyComment | undefined {
+	const r = getComments(node, flags | CF.First, fn);
+	return r.length === 0 ? undefined : r[0];
+}
+
+export function escapeComments(flags: number, fn?: (comment: AnyComment) => boolean) {
+	const comments = getAllComments().filter(getCommentTestFunction(flags, fn)) as AnyComment[];
+	comments.forEach(setDidPrintComment);
+	return new Set(comments);
+}
+
+export const enum CF {
+	Leading = 1 << 1,
+	Trailing = 1 << 2,
+	Dangling = 1 << 3,
+	Block = 1 << 4,
+	Line = 1 << 5,
+	PrettierIgnore = 1 << 6,
+	First = 1 << 7,
+	Last = 1 << 8,
+}
+export function isPrettierIgnoreComment(comment: AnyComment) {
+	return is_Comment(comment) && /^\s*prettier-ignore\s*/.test(comment.value) && !comment.unignore;
+}
+export function isPrettierIgnoreAttribute(node: Node): node is MutatedAttribute {
+	return is_Attribute(node) && /^\s*rustfmt::skip\s*$/.test(node.value);
+}
+function getCommentTestFunction(flags: CF, fn?: (comment: AnyComment) => boolean) {
+	return function (comment: AnyComment, index: number, comments: AnyComment[]) {
+		__DEV__: Narrow<number>(flags), assert(handled(comment));
+		return !(
+			(flags & CF.Leading && !isLeading(comment)) ||
+			(flags & CF.Trailing && !isTrailing(comment)) ||
+			(flags & CF.Dangling && !isDangling(comment)) ||
+			(flags & CF.Block && !is_BlockCommentKind(comment)) ||
+			(flags & CF.Line && !is_LineCommentKind(comment)) ||
+			(flags & CF.First && index !== 0) ||
+			(flags & CF.Last && !iLast(index, comments)) ||
+			(flags & CF.PrettierIgnore && !(isPrettierIgnoreComment(comment) || isPrettierIgnoreAttribute(comment))) ||
+			(fn && !fn(comment))
+		);
+	};
+}
+
+export function hasComment(node: Node, flags: number = 0, fn?: (comment: AnyComment) => boolean) {
+	if ("comments" in node && node.comments!.length > 0) {
+		return flags || fn ? (node.comments as AnyComment[]).some(getCommentTestFunction(flags, fn)) : true;
+	}
+	return false;
+}
+export function hasNewlineInRange(leftIndex: number, rightIndex: number) {
+	__DEV__: assert(leftIndex <= rightIndex);
+	const text = getContext().options.originalText;
+	for (var i = leftIndex; i < rightIndex; ++i) if (text.charCodeAt(i) === 10) return true;
+	return false;
+}
+export function isNextLineEmpty(node: Node) {
+	return isNextLineEmptyAfterIndex(end(node));
+}
+export function isNextLineEmptyAfterIndex(index: number | false) {
+	let oldIdx: number | false = -1;
+	let idx: number | false = index;
+	while (idx !== oldIdx) {
+		oldIdx = idx;
+		idx = skipToLineEnd(idx);
+		idx = skipBlockComment(idx);
+		idx = skipSpaces(idx);
+		idx = skipParens(idx);
+	}
+	idx = skipLineComment(idx);
+	idx = skipParens(idx);
+	idx = skipNewline(idx);
+	idx = skipParens(idx);
+	return idx !== false && hasNewline(idx);
+}
+export function hasNewline(index: number | false, backwards = false) {
+	if (index === false) return false;
+	const i = skipSpaces(index, backwards);
+	return i !== false && i !== skipNewline(i, backwards);
+}
+function skipLineComment(index: number | false) {
+	if (index === false) return false;
+	const { commentSpans, originalText } = getContext().options;
+	if (commentSpans.has(index) && originalText.charCodeAt(index + 1) === 47 /** "/" */)
+		return skipEverythingButNewLine(commentSpans.get(index)!);
+	return index;
+}
+function skipBlockComment(index: number | false) {
+	if (index === false) return false;
+	const { commentSpans, originalText } = getContext().options;
+	if (commentSpans.has(index) && originalText.charCodeAt(index + 1) === 42 /** "*" */) return commentSpans.get(index)!;
+	return index;
+}
+const [skipSpaces, skipToLineEnd, skipEverythingButNewLine] = [/[ \t]/, /[,; \t]/, /[^\r\n]/].map(function (re) {
+	return function (index: number | false, backwards = false) {
+		if (index === false) return false;
+		const { originalText: text } = getContext().options;
+		let cursor = index;
+		while (cursor >= 0 && cursor < text.length) {
+			if (re.test(text.charAt(cursor))) backwards ? cursor-- : cursor++;
+			else return cursor;
+		}
+		return cursor === -1 || cursor === text.length ? cursor : false;
+	};
+});
+
+function skipNewline(index: number | false, backwards = false) {
+	if (index === false) return false;
+	const { originalText } = getContext().options;
+	const atIndex = originalText.charCodeAt(index);
+	if (backwards) {
+		if (originalText.charCodeAt(index - 1) === 13 && atIndex === 10) return index - 2;
+		if (atIndex === 10) return index - 1;
+	} else {
+		if (atIndex === 13 && originalText.charCodeAt(index + 1) === 10) return index + 2;
+		if (atIndex === 10) return index + 1;
+	}
+	return index;
+}
+
+function skipParens(index: number | false, backwards = false) {
+	return index;
+	// if (index === false) return false;
+	// const { parensPositions } = getContext().options;
+	// while (parensPositions.has(index)) backwards ? index-- : index++;
+	// return index;
+}
+
+export function getNextNonSpaceNonCommentCharacterIndex(node: Node) {
+	return getNextNonSpaceNonCommentCharacterIndexWithStartIndex(end(node));
+}
+function getNextNonSpaceNonCommentCharacterIndexWithStartIndex(i: number) {
+	let oldIdx = -1;
+	let nextIdx = i;
+	while (nextIdx !== oldIdx) {
+		oldIdx = nextIdx;
+		nextIdx = skipSpaces(nextIdx) as number;
+		nextIdx = skipBlockComment(nextIdx) as number;
+		nextIdx = skipLineComment(nextIdx) as number;
+		nextIdx = skipNewline(nextIdx) as number;
+		nextIdx = skipParens(nextIdx) as number;
+	}
+	return nextIdx;
+}
+export function getNextNonSpaceNonCommentCharacter(node: Node) {
+	return getContext().options.originalText.charAt(getNextNonSpaceNonCommentCharacterIndex(node));
+}
+
+interface CommentContext {
+	comment: AnyComment;
+	precedingNode: Node | undefined;
+	enclosingNode: Node | undefined;
+	followingNode: Node | undefined;
+	text: string;
+	options: CustomOptions;
+	ast: Node;
+	isLastComment: boolean;
+}
+
+function handled(comment: AnyComment) {
+	return "printed" in comment;
+}
+function handleCommon(ctx: CommentContext): boolean {
+	{
+		const { comment, precedingNode, enclosingNode, followingNode } = ctx;
+		if (!enclosingNode) {
+			ctx.enclosingNode = ctx.comment.loc.src.program;
+		} else if (enclosingNode && is_NodeWithBodyOrCases(enclosingNode)) {
+			const body = getBodyOrCases(enclosingNode);
+			if (body) {
+				if (is_ExpressionWithBodyOrCases(enclosingNode) && enclosingNode.label) {
+					if (ctx.precedingNode === enclosingNode.label) {
+						ctx.precedingNode = undefined;
+					}
+					if (followingNode === enclosingNode.label) {
+						ctx.followingNode = undefined;
+					}
+				}
+				if (comment.loc.isBefore(body)) {
+					if (followingNode && body.loc.contains(followingNode)) {
+						ctx.followingNode = undefined;
+					}
+					if (!ctx.precedingNode && !ctx.followingNode) {
+						addLeadingComment(enclosingNode, comment);
+						return true;
+					}
+				} else if (comment.loc.isAfter(body)) {
+					if (precedingNode && body.loc.contains(precedingNode)) {
+						ctx.precedingNode = undefined;
+					}
+					if (!ctx.precedingNode && !ctx.followingNode) {
+						addTrailingComment(enclosingNode, comment);
+						return true;
+					}
+				} else if (body.loc.contains(comment)) {
+					if (precedingNode && !body.loc.contains(precedingNode)) {
+						ctx.precedingNode = undefined;
+					}
+					if (followingNode && !body.loc.contains(followingNode)) {
+						ctx.followingNode = undefined;
+					}
+				}
+			}
+		}
+	}
+	for (const fn of [
+		handleMixedInOuterAttributeComments,
+		handleAttributeComments,
+		handleDanglingComments,
+		handleFunctionComments,
+		handleMacroRuleComments,
+		handleStructLiteralComments,
+		handleVariableDeclaratorComments,
+		handleIfBlockExpressionComments,
+		handleMemberExpressionComments,
+		handleStatementComments,
+		handleFlowControlComments,
+		handleBadComments,
+	]) {
+		fn(ctx);
+		if (handled(ctx.comment)) {
+			// console.log(ctx.comment.loc.url(), fn.name);
+			return true;
+		}
+	}
+
+	const { precedingNode, followingNode, comment } = ctx;
+
+	if (isStartOfLine(comment)) {
+		if (followingNode) {
+			addLeadingComment(followingNode, comment);
+		} else if (precedingNode) {
+			addTrailingComment(precedingNode, comment);
+		} else {
+			exit.never(ctx);
+		}
+	} else if (isEndOfLine(comment)) {
+		if (precedingNode) {
+			addTrailingComment(precedingNode, comment);
+		} else if (followingNode) {
+			addLeadingComment(followingNode, comment);
+		} else {
+			exit.never(ctx);
+		}
+	} else {
+		if (precedingNode && followingNode) {
+			return false;
+		} else if (precedingNode) {
+			addTrailingComment(precedingNode, comment);
+		} else if (followingNode) {
+			addLeadingComment(followingNode, comment);
+		} else {
+			exit.never(ctx);
+		}
+	}
+	return handled(ctx.comment);
+}
+export function handleOwnLineComment(ctx: CommentContext) {
+	return handleCommon(ctx);
+}
+export function handleEndOfLineComment(ctx: CommentContext) {
+	const { precedingNode, enclosingNode, comment } = ctx;
+	if (
+		// handleCallExpressionComments
+		precedingNode &&
+		enclosingNode &&
+		is_CallExpression_or_CallLikeMacroInvocation(enclosingNode) &&
+		enclosingNode.arguments.length > 0 &&
+		precedingNode === (enclosingNode.typeArguments ? last_of(enclosingNode.typeArguments) : enclosingNode.callee)
+	) {
+		addLeadingComment(enclosingNode.arguments[0], comment);
+		return true;
+	} else if (
+		// handlePropertyComments
+		enclosingNode &&
+		is_StructLiteralProperty(enclosingNode)
+	) {
+		addLeadingComment(enclosingNode, comment);
+		return true;
+	} else {
+		return handleCommon(ctx);
+	}
+}
+
+export function handleRemainingComment(ctx: CommentContext) {
+	return handleCommon(ctx);
+}
+
+function handleStructLiteralComments({ enclosingNode, followingNode, comment }: CommentContext) {
+	if (enclosingNode && is_StructLiteralPropertySpread(enclosingNode) && followingNode === enclosingNode.expression) {
+		addLeadingComment(enclosingNode, comment);
+	}
+}
+
+function handleVariableDeclaratorComments({ enclosingNode, followingNode, comment }: CommentContext) {
+	if (
+		enclosingNode &&
+		(is_xVariableEqualishLike(enclosingNode) || is_ReassignmentNode(enclosingNode)) &&
+		followingNode &&
+		(is_BlockCommentKind(comment) ||
+			nisAnyOf(followingNode, [
+				NodeType.StructLiteral,
+				NodeType.StructPattern,
+				NodeType.TupleLiteral,
+				NodeType.TypeTuple,
+				NodeType.TuplePattern,
+				NodeType.ArrayLiteral,
+				NodeType.ArrayPattern,
+				NodeType.SizedArrayLiteral,
+				NodeType.TypeSizedArray,
+			]))
+	) {
+		addLeadingComment(followingNode, comment);
+	}
+}
+
+function handleMixedInOuterAttributeComments({ precedingNode, enclosingNode, followingNode, comment }: CommentContext) {
+	if (enclosingNode && hasOuterAttributes(enclosingNode) && end(comment) <= ownStart(enclosingNode)) {
+		if (isPrettierIgnoreComment(comment) || isPrettierIgnoreAttribute(comment)) {
+			setPrettierIgnoreTarget(enclosingNode, comment);
+		}
+		if (isEndOfLine(comment)) {
+			__DEV__: assert(!!precedingNode && is_Attribute(precedingNode), "", precedingNode);
+			if (shouldPrintOuterAttributesAbove(enclosingNode)) {
+				// #[attr] // comment
+				// node
+				addTrailingComment(precedingNode, comment);
+			} else {
+				// #[attr] /* comment */ node
+				addLeadingComment(followingNode || enclosingNode, comment);
+			}
+		} else {
+			// __DEV__: assert(isStartOfLine(comment));
+			if (followingNode && end(followingNode) <= ownStart(enclosingNode)) {
+				addLeadingComment(followingNode, comment);
+			} else if (precedingNode && enclosingNode.loc.contains(precedingNode)) {
+				addTrailingComment(precedingNode, comment);
+			} else {
+				addLeadingComment(enclosingNode, comment);
+			}
+		}
+	}
+}
+function handleAttributeComments({ precedingNode, enclosingNode, followingNode, comment, ast }: CommentContext) {
+	if (is_AttributeOrDocComment(comment)) {
+		if (
+			comment.inner &&
+			enclosingNode &&
+			is_FunctionDeclaration(enclosingNode) &&
+			(!followingNode || !is_StatementNode(followingNode)) &&
+			(!precedingNode || !is_StatementNode(precedingNode))
+		) {
+			if (enclosingNode.body) {
+				if (canAttachCommentInLocArray(enclosingNode.body)) {
+					addDanglingComment(enclosingNode, comment, DCM["body"]);
+				} else {
+					addLeadingComment(enclosingNode.body[0], comment);
+				}
+			} else {
+				addLeadingComment(enclosingNode, comment);
+			}
+		} else {
+			// if (comment.loc.url().startsWith("tests/samples/macro/attr.rs") && getContext().options.danglingAttributes.includes(comment)) {
+			// 	// debugger;
+			// 	console.log({
+			// 		comment: comment.loc.url(),
+			// 		precedingNode: precedingNode?.loc.url(),
+			// 		enclosingNode: enclosingNode?.loc.url(),
+			// 		followingNode: followingNode?.loc.url(),
+			// 	});
+			// }
+			if (followingNode) {
+				addLeadingComment(followingNode, comment);
+			} else if (enclosingNode) {
+				for (var key in DCM)
+					if (key in enclosingNode) {
+						addDanglingComment(enclosingNode, comment, key as DCM);
+						return;
+					}
+			} else {
+				addDanglingComment(ast, comment, DCM["body"]);
+			}
+		}
+	}
+}
+
+function handleBadComments({ precedingNode, enclosingNode, followingNode, ast, comment }: CommentContext) {
+	if (!enclosingNode) {
+		// console.log(comment.loc.url());
+		if (followingNode) {
+			addLeadingComment(followingNode, comment);
+		} else if (precedingNode) {
+			addTrailingComment(precedingNode, comment);
+		} else {
+			addDanglingComment(enclosingNode || ast, comment, DCM["body"]);
+		}
+	} else if (!precedingNode && !followingNode) {
+		if (enclosingNode && enclosingNode !== ast) {
+			addLeadingComment(enclosingNode, comment);
+		} else {
+			addDanglingComment(ast, comment, DCM["body"]);
+		}
+	}
+}
+function is_ABI_Comment({ precedingNode, enclosingNode, comment }: CommentContext) {
+	return (
+		is_CommentOrDocComment(comment) &&
+		((precedingNode && is_ExternSpecifier(precedingNode)) || (enclosingNode && is_ExternSpecifier(enclosingNode)))
+	);
+}
+function handleFlowControlComments({ precedingNode, enclosingNode, followingNode, comment }: CommentContext) {
+	if (enclosingNode && is_FlowControlExpression(enclosingNode)) {
+		if (!precedingNode && (isOwnLine(comment) || isEndOfLine(comment)) && !followingNode) {
+			addLeadingComment(enclosingNode, comment);
+		}
+	}
+}
+function handleFunctionComments(ctx: CommentContext) {
+	const { precedingNode, enclosingNode, followingNode, comment } = ctx;
+	if (enclosingNode && is_FunctionNode(enclosingNode)) {
+		if (
+			is_FunctionDeclaration(enclosingNode) &&
+			((!is_ABI_Comment(ctx) && comment.loc.isBefore(enclosingNode.generics || enclosingNode.id)) ||
+				(enclosingNode.generics && comment.loc.isBetween(enclosingNode.generics, enclosingNode.parameters)))
+		) {
+			addLeadingComment(enclosingNode, comment);
+		} else if (
+			!enclosingNode.returnType &&
+			comment.loc.isBetween(
+				enclosingNode.parameters,
+				is_FunctionDeclaration(enclosingNode) ? enclosingNode.body! : enclosingNode.expression
+			)
+		) {
+			if (is_FunctionDeclaration(enclosingNode)) {
+				addCommentToBlock(enclosingNode, comment);
+			} else {
+				addLeadingComment(enclosingNode.expression, comment);
+			}
+		} else if (
+			precedingNode && //
+			enclosingNode.parameters.loc.contains(comment)
+		) {
+			if (precedingNode === getLastParameter(enclosingNode)) {
+				addTrailingComment(precedingNode, comment);
+			}
+		} else if (
+			followingNode &&
+			isStartOfLine(comment) &&
+			comment.loc.isAfter(enclosingNode.parameters) &&
+			(!is_FunctionDeclaration(enclosingNode) || !enclosingNode.whereBounds || comment.loc.isAfter(enclosingNode.whereBounds!)) &&
+			(!enclosingNode.returnType || comment.loc.isAfter(enclosingNode.returnType)) &&
+			followingNode === (is_FunctionDeclaration(enclosingNode) ? enclosingNode.body?.[0] : enclosingNode.expression)
+		) {
+			addLeadingComment(followingNode, comment);
+		}
+	}
+}
+function handleMacroRuleComments(ctx: CommentContext) {
+	const { precedingNode, enclosingNode, followingNode, comment } = ctx;
+	if (enclosingNode && is_MacroRule(enclosingNode)) {
+		if (enclosingNode.transform.loc.contains(comment)) {
+			__DEV__: assert(enclosingNode.transform.length > 0);
+			if (!precedingNode || !enclosingNode.transform.loc.contains(precedingNode)) {
+				__DEV__: assert(!!followingNode && enclosingNode.transform.loc.contains(followingNode));
+				addLeadingComment(followingNode, comment);
+			}
+		} else if (enclosingNode.match.loc.contains(comment)) {
+			__DEV__: assert(enclosingNode.match.length > 0);
+			if (!followingNode || !enclosingNode.match.loc.contains(followingNode)) {
+				__DEV__: assert(!!precedingNode && enclosingNode.match.loc.contains(precedingNode));
+				addTrailingComment(precedingNode!, comment);
+			}
+		}
+	}
+}
+
+function handleStatementComments(ctx: CommentContext) {
+	const { precedingNode, comment } = ctx;
+	if (isEndOfLine(comment) && precedingNode && (is_StatementNode(precedingNode) || precedingNode.loc.sliceText().endsWith(";"))) {
+		addTrailingComment(precedingNode, comment);
+	}
+}
+
+function addCommentToBlock(block: NodeWithBodyOrCases, comment: AnyComment) {
+	const body = getBodyOrCases(block);
+	__DEV__: assert(!!body);
+	if (body.length > 0) {
+		addLeadingComment(body![0], comment);
+	} else {
+		addDanglingComment(block, comment, DCM["body"]);
+	}
+}
+
+function handleIfBlockExpressionComments(ctx: CommentContext) {
+	const { comment, enclosingNode } = ctx;
+	if (enclosingNode && is_IfBlockExpression(enclosingNode)) {
+		const { condition, body, else: else_ } = enclosingNode;
+		if (comment.loc.isBefore(condition)) {
+			addLeadingComment(condition, comment);
+		} else if (comment.loc.isBetween(condition, body)) {
+			addTrailingComment(condition, comment);
+		} else if (else_ && comment.loc.isBetween(body, else_)) {
+			if (is_IfBlockExpression(else_)) {
+				addLeadingComment(else_.condition, comment);
+			} else {
+				addCommentToBlock(else_, comment);
+			}
+		}
+	}
+}
+
+function handleMemberExpressionComments({ comment, precedingNode, enclosingNode }: CommentContext) {
+	if (enclosingNode && is_MemberAccessLike(enclosingNode)) {
+		if (isStartOfLine(comment) || !precedingNode) addLeadingComment(enclosingNode, comment);
+		else addTrailingComment(precedingNode, comment);
+		return true;
+	}
+
+	return false;
+}
+
+function handleDanglingComments({ comment, enclosingNode }: CommentContext) {
+	if (enclosingNode) {
+		for (var key in DCM) {
+			if (key in enclosingNode) {
+				var arr: LocArray = enclosingNode[key];
+				if (is_LocArray(arr) && canAttachCommentInLocArray(arr) && arr.loc.contains(comment)) {
+					addDanglingComment(enclosingNode, comment, key as DCM);
+					return;
+				}
+			}
+		}
+	}
+}
+
+function canAttachCommentInLocArray(arr: LocArray) {
+	return arr.length === 0 || arr.every((node) => !canAttachComment(node));
+}
+
+function isOwnLine(comment: AnyComment) {
+	return isStartOfLine(comment) && hasBreaklineAfter(comment);
+}
+function isStartOfLine(comment: AnyComment) {
+	return comment.placement === "ownLine";
+}
+function isEndOfLine(comment: AnyComment) {
+	return comment.placement === "endOfLine";
+}
+export function isDangling(comment: AnyComment) {
+	__DEV__: assert(handled(comment));
+	return !comment.leading && !comment.trailing;
+}
+export function isLeading(comment: AnyComment) {
+	__DEV__: assert(handled(comment));
+	return comment.leading && !comment.trailing;
+}
+export function isTrailing(comment: AnyComment) {
+	__DEV__: assert(handled(comment));
+	return !comment.leading && comment.trailing;
+}
+
+export function print_comment(comment: CommentOrDocComment) {
+	__DEV__: Narrow<PrettierCommentInfo>(comment);
+
+	const doc = is_BlockCommentNode(comment)
+		? isIndentableBlockComment(comment.value)
+			? [
+					(!handled(comment) || isTrailing(comment)) && !hasBreaklineBefore(comment) ? hardline : "",
+					getCommentStart(comment),
+					...comment.value.split(/\n/g).map((line, i, a) =>
+						i === 0 //
+							? [line.trimEnd(), hardline]
+							: !iLast(i, a)
+							? [" " + line.trim(), hardline]
+							: " " + line.trimStart()
+					),
+					"*/",
+			  ]
+			: [
+					getCommentStart(comment), //
+					join(literalline, comment.value.split(/\n/g)),
+					"*/",
+			  ]
+		: [getCommentStart(comment), comment.value.trimEnd()];
+
+	return handled(comment) && isDangling(comment) //
+		? [doc, getPostLeadingComment(comment)]
+		: doc;
+
+	function getCommentStart(comment: CommentOrDocComment) {
+		return is_Comment(comment)
+			? is_BlockCommentKind(comment)
+				? "/*"
+				: "//"
+			: is_BlockCommentKind(comment)
+			? isInner(comment)
+				? "/*!"
+				: "/**"
+			: isInner(comment)
+			? "//!"
+			: "///";
+	}
+	function isIndentableBlockComment(value: string) {
+		const lines = `*${value}*`.split(/\n/g);
+		return lines.length > 1 && lines.every((line) => /^\s*\*/.test(line));
+	}
+}

frontend/src/common/prettier/plugins/rust/format/complexity.ts

@@ -0,0 +1,282 @@
+import {
+	ForLtParametersBody,
+	FunctionSpread,
+	GenericParameterDeclaration,
+	MaybeGenericArgsTarget,
+	MissingNode,
+	Node,
+	NodeType,
+	TypeBound,
+	TypeBoundsConstaint,
+	TypeCallArgument,
+	TypeNamespaceTargetNoSelector,
+	TypeNode,
+} from "jinx-rust";
+import {
+	getAstPath,
+	getOwnChildAstPath,
+	is_BareTypeTraitBound,
+	is_FunctionSpread,
+	is_LetScrutinee,
+	is_Literal,
+	is_MissingNode,
+	is_TypeBoundsStandaloneNode,
+	is_TypeFunctionNode,
+	is_TypeNode,
+	is_VariableDeclarationNode,
+} from "jinx-rust/utils";
+import { exit, has_key_defined, last_of, spliceAll } from "../utils/common";
+import { canBreak } from "./external";
+import { getContext, getNode, getOptions, getPrintFn } from "./plugin";
+
+let DEPTH = 0;
+const ANCESTRY: Node[] = [];
+const LONE_SHORT_ARGUMENT_THRESHOLD_RATE = 0.25;
+
+export function withCheckContext<R>(fn: () => R): R {
+	if (0 === DEPTH) {
+		return fn();
+	} else {
+		DEPTH = 0;
+		const prev = spliceAll(ANCESTRY);
+		try {
+			return fn();
+		} finally {
+			DEPTH = ANCESTRY.push(...prev);
+		}
+	}
+}
+
+export function is_short(str: string) {
+	return str.length <= LONE_SHORT_ARGUMENT_THRESHOLD_RATE * getOptions().printWidth;
+}
+function print(target: Node) {
+	const current = getNode();
+	const keys: (string | number)[] = [...getAstPath(ANCESTRY[0], getNode())];
+	for (let i = 1; i < ANCESTRY.length; i++) keys.push(...getOwnChildAstPath(ANCESTRY[i - 1], ANCESTRY[i]));
+	keys.push(...getOwnChildAstPath(last_of(ANCESTRY), target));
+	try {
+		return getContext().path.call(() => getPrintFn(target)(), ...keys);
+	} catch (e) {
+		console.log({ current, target, keys, ANCESTRY });
+		throw e;
+	}
+}
+
+function IsSimpleFunction<T extends Node>(fn: (node: T) => boolean): (node: T) => boolean {
+	return function (node: T) {
+		if (0 !== DEPTH && node === ANCESTRY[DEPTH - 1]) {
+			return fn(node);
+		}
+
+		if (DEPTH >= 2) {
+			return isShortBasic(node);
+		}
+
+		try {
+			return fn((ANCESTRY[DEPTH++] = node) as any);
+		} finally {
+			ANCESTRY.length = --DEPTH;
+		}
+	} as any;
+}
+
+function HasComplexFunction<T extends Node>(fn: (node: T) => boolean): (node: T) => boolean {
+	return function (node: T) {
+		if (0 !== DEPTH && node === ANCESTRY[DEPTH - 1]) {
+			return fn(node);
+		}
+
+		if (DEPTH >= 2) {
+			return !isShortBasic(node);
+		}
+
+		try {
+			return fn((ANCESTRY[DEPTH++] = node) as any);
+		} finally {
+			ANCESTRY.length = --DEPTH;
+		}
+	} as any;
+}
+
+const isShortBasic = (node: Node) => {
+	switch (node.nodeType) {
+		case NodeType.MissingNode:
+			return true;
+		case NodeType.Identifier:
+		case NodeType.Index:
+		case NodeType.LtIdentifier:
+		case NodeType.LbIdentifier:
+		case NodeType.McIdentifier:
+			return is_short(node.name);
+		case NodeType.Literal:
+			return is_short(node.value) && !/\n/.test(node.value);
+	}
+	return false;
+};
+
+export const isSimpleType = IsSimpleFunction<FunctionSpread | TypeNode | MissingNode>((node): boolean => {
+	switch (node.nodeType) {
+		case NodeType.MissingNode:
+		case NodeType.FunctionSpread:
+			return true;
+		case NodeType.MacroInvocation:
+			return false;
+		case NodeType.Identifier:
+		case NodeType.TypeNever:
+		case NodeType.TypeInferred:
+			return true;
+		case NodeType.TypePath:
+			return isShortBasic(node.segment) && (!node.namespace || isSimpleType(node.namespace));
+		case NodeType.TypeCall:
+			return isSimpleType(node.typeCallee) && !hasComplexTypeArguments(node);
+		case NodeType.ExpressionTypeSelector:
+			return isSimpleType(node.typeTarget) && (!node.typeExpression || isSimpleType(node.typeExpression));
+		case NodeType.TypeDynBounds:
+			return !hasComplexTypeBounds(node);
+		case NodeType.TypeImplBounds:
+			return !hasComplexTypeBounds(node);
+		case NodeType.TypeFnPointer: {
+			const param = node.parameters[0];
+			return (
+				(!node.extern || !node.extern.abi || isShortBasic(node.extern.abi)) &&
+				!hasComplexLtParameters(node) &&
+				(node.parameters.length === 0 ||
+					(node.parameters.length === 1 &&
+						(is_FunctionSpread(param) ||
+							(!is_TypeFunctionNode(param.typeAnnotation) && isSimpleType(param.typeAnnotation))))) &&
+				(!node.returnType || isSimpleType(node.returnType))
+			);
+		}
+		case NodeType.TypeFunction:
+			return isSimpleType(node.callee) && node.parameters.every(isSimpleType) && (!node.returnType || isSimpleType(node.returnType));
+		case NodeType.TypeSizedArray:
+			return isSimpleType(node.typeExpression) && isShortBasic(node.sizeExpression);
+		case NodeType.TypeSlice:
+			return isSimpleType(node.typeExpression);
+		case NodeType.TypeTuple:
+			return node.items.length === 0 || (node.items.length === 1 && isSimpleType(node.items[0]));
+		case NodeType.TypeReference:
+		case NodeType.TypeDereferenceMut:
+		case NodeType.TypeDereferenceConst:
+		case NodeType.TypeParenthesized:
+			return isSimpleType(node.typeExpression);
+		default:
+			__DEV__: exit.never(node);
+			return false;
+	}
+});
+
+export const hasComplexTypeBounds = HasComplexFunction<Extract<Node, TypeBoundsConstaint>>((node) => {
+	return !!node.typeBounds && node.typeBounds.length > 1 && !node.typeBounds.every(isSimpleTypeBound);
+});
+
+export const isSimpleTypeBound = (node: TypeBound): boolean => {
+	switch (node.nodeType) {
+		case NodeType.TypeParenthesized:
+			return isSimpleTypeBound(node.typeExpression);
+		// #Lifetime
+		case NodeType.LtIdentifier:
+		case NodeType.LtElided:
+		case NodeType.LtStatic:
+			return true;
+		case NodeType.TypeTraitBound:
+			return is_BareTypeTraitBound(node) && isSimpleTypeNamespaceTargetNoSelector(node.typeExpression);
+		default:
+			__DEV__: exit.never(node);
+			return false;
+	}
+	function isSimpleTypeNamespaceTargetNoSelector(node: TypeNamespaceTargetNoSelector): boolean {
+		switch (node.nodeType) {
+			case NodeType.Identifier:
+				return true;
+			case NodeType.TypePath:
+				return undefined === node.namespace || isSimpleTypeNamespaceTargetNoSelector(node.namespace);
+			case NodeType.TypeCall:
+				return false;
+			case NodeType.TypeFunction:
+				return isSimpleTypeNamespaceTargetNoSelector(node.callee) && node.parameters.length === 0 && !node.returnType;
+			default:
+				__DEV__: exit.never(node);
+				return false;
+		}
+	}
+};
+
+const isSimpleTypeArgument = IsSimpleFunction<TypeCallArgument>((node) => {
+	if (is_TypeNode(node)) {
+		return isSimpleType(node);
+	}
+	switch (node.nodeType) {
+		// #Lifetime
+		case NodeType.LtIdentifier:
+		case NodeType.LtElided:
+		case NodeType.LtStatic:
+		case NodeType.Literal:
+			return true;
+		case NodeType.MinusExpression:
+			return is_Literal(node.expression);
+		case NodeType.BlockExpression:
+			return false; //willBreak(getPrintFn(node)("body"));
+		case NodeType.TypeCallNamedArgument:
+			return isSimpleType(node.typeExpression);
+		case NodeType.TypeCallNamedBound:
+			return isSimpleType(node.typeTarget) && !hasComplexTypeBounds(node);
+		default:
+			__DEV__: exit.never(node);
+			return false;
+	}
+});
+
+export const hasComplexTypeArguments = HasComplexFunction<Extract<Node, MaybeGenericArgsTarget>>((node) =>
+	!node.typeArguments || node.typeArguments.length === 0
+		? false
+		: node.typeArguments.length === 1
+		? (() => {
+				const arg = node.typeArguments[0];
+				return is_TypeBoundsStandaloneNode(arg) || canBreak(print(arg));
+		  })()
+		: true
+);
+
+export const hasComplexLtParameters = HasComplexFunction<Extract<Node, ForLtParametersBody>>((node) => {
+	const ltParameters = node.ltParameters;
+	if (!ltParameters || ltParameters.length === 0) {
+		return false;
+	}
+	if (ltParameters.length === 1) {
+		const arg = ltParameters[0];
+		if (arg.ltBounds && arg.ltBounds.length > 1) {
+			return true;
+		}
+
+		return false;
+	}
+	return true;
+});
+
+export const isShortGenericParameterDeclaration = IsSimpleFunction<GenericParameterDeclaration>((node) => {
+	switch (node.nodeType) {
+		case NodeType.GenericTypeParameterDeclaration:
+			return !node.typeBounds && !node.typeDefault;
+		case NodeType.ConstTypeParameterDeclaration:
+			return (!node.typeAnnotation || is_MissingNode(node)) && !node.typeDefault;
+		case NodeType.GenericLtParameterDeclaration:
+			return !node.ltBounds;
+		default:
+			exit.never();
+	}
+});
+
+export const hasComplexGenerics = HasComplexFunction<Node>((node) => {
+	return has_key_defined(node, "generics") && node.generics.length > 0 && !node.generics.every(isShortGenericParameterDeclaration);
+});
+
+export const hasComplexTypeAnnotation = HasComplexFunction<Node>((node) => {
+	if (is_VariableDeclarationNode(node) && !is_LetScrutinee(node)) {
+		const { typeAnnotation } = node;
+		return !!typeAnnotation && !is_MissingNode(typeAnnotation) && !isSimpleType(typeAnnotation);
+	} else {
+		return false;
+	}
+});

frontend/src/common/prettier/plugins/rust/format/external.ts

@@ -0,0 +1,126 @@
+import { Attribute, AttributeOrDocComment, Comment, DocCommentAttribute, LocArray, MemberExpression, Node, SourceFile } from "jinx-rust";
+import { PickProps } from "jinx-rust/utils";
+import type { Doc, ParserOptions, Printer } from "prettier";
+import { doc } from "prettier";
+import { AssertTypesEq } from "../utils/common";
+
+export type { Doc, ParserOptions, Plugin, Printer } from "prettier";
+
+
+export const {
+	join,
+	line,
+	softline,
+	hardline,
+	literalline,
+	group,
+	conditionalGroup,
+	fill,
+	lineSuffix,
+	lineSuffixBoundary,
+	cursor,
+	breakParent,
+	ifBreak,
+	trim,
+	indent,
+	indentIfBreak,
+	align,
+	addAlignmentToDoc,
+	markAsRoot,
+	dedentToRoot,
+	dedent,
+	hardlineWithoutBreakParent,
+	literallineWithoutBreakParent,
+	label,
+} = doc.builders;
+
+export const {
+	willBreak,
+	traverseDoc,
+	findInDoc,
+	mapDoc,
+	removeLines,
+	stripTrailingHardline,
+} = doc.utils;
+
+// Fallback implementations for removed common in prettier 3
+export const isConcat = (doc: any): boolean => Array.isArray(doc);
+export const getDocParts = (doc: any): any[] => Array.isArray(doc) ? doc : [doc];
+export const propagateBreaks = (doc: any): any => doc;
+export const normalizeParts = (parts: any[]): any[] => parts.flat();
+export const normalizeDoc = (doc: any): any => doc;
+export const cleanDoc = (doc: any): any => doc;
+export const canBreak = (doc: any): boolean => {
+	if (!doc) return false;
+	if (typeof doc === 'string') return false;
+	if (Array.isArray(doc)) return doc.some(canBreak);
+	if (doc.type === 'group' || doc.type === 'fill') return true;
+	return willBreak(doc);
+};
+
+export const Symbol_comments = Symbol.for("comments");
+
+export interface CustomOptions extends ParserOptions<Node> {
+	[Symbol_comments]: AnyComment[];
+	rsParsedFile: SourceFile;
+	commentSpans: Map<number, number>;
+	printer: Printer<Node>;
+	cursorNode: any;
+
+	comments: Comment[];
+	danglingAttributes: AttributeOrDocComment[];
+	actuallyMethodNodes: WeakSet<MemberExpression>;
+}
+
+export type NodeWithComments<T extends Node> = T & { comments: AnyComment[] };
+export interface MutatedComment extends Comment, PrettierCommentInfo {}
+export interface MutatedAttribute extends Attribute, PrettierCommentInfo {}
+export interface MutatedDocComment extends DocCommentAttribute, PrettierCommentInfo {}
+export type AnyComment = MutatedComment | MutatedAttribute | MutatedDocComment;
+
+type keyofDelimitedArrayProps<T> = T extends never ? never : keyof PickProps<T, LocArray<any, "()" | "[]" | "{}" | "<>">>;
+
+__DEV__: AssertTypesEq<keyof typeof DCM, keyofDelimitedArrayProps<Node>>();
+
+export enum DCM {
+	"arguments" = "arguments",
+	"parameters" = "parameters",
+	"items" = "items",
+	"properties" = "properties",
+	"members" = "members",
+	"body" = "body",
+	"cases" = "cases",
+	"typeArguments" = "typeArguments",
+	"ltParameters" = "ltParameters",
+	"generics" = "generics",
+	"specifiers" = "specifiers",
+	"rules" = "rules",
+	"match" = "match",
+	"transform" = "transform",
+	"segments" = "segments",
+}
+
+export interface PrettierCommentInfo {
+	trailing: boolean;
+	leading: boolean;
+	unignore: boolean;
+	printed: boolean;
+	placement: "ownLine" | "endOfLine" | "remaining";
+	// nodeDescription?: any;
+	marker?: DCM;
+}
+
+export interface AstPath<T = Node> {
+	stack: (Node | string | number)[];
+	callParent<R>(callback: (path: this) => R, count?: number): R;
+	getName(): PropertyKey | null;
+	getValue(): T;
+	getNode(count?: number): T | null;
+	getParentNode(count?: number): T | null;
+
+	match(...predicates: ((node: Node, name: string | null, number: number | null) => boolean)[]): boolean;
+
+	call<R>(callback: (path: AstPath, index: number, value: any) => R, ...props: (string | number)[]): R;
+	each(callback: (path: AstPath, index: number, value: any) => void, ...props: (string | number)[]): void;
+	map<R>(callback: (path: AstPath, index: number, value: any) => R, ...props: (string | number)[]): R[];
+}

frontend/src/common/prettier/plugins/rust/format/plugin.ts

@@ -0,0 +1,367 @@
+import { AttributeOrComment, IfBlockExpression, Node, Program, rs } from "jinx-rust";
+import {
+	ArrayProps,
+	BoolProps,
+	NodeProps,
+	end,
+	hasAttributes,
+	insertNodes,
+	is_Attribute,
+	is_AttributeOrComment,
+	is_BlockCommentKind,
+	is_BlockCommentNode,
+	is_Comment,
+	is_DocCommentAttribute,
+	is_ElseBlock,
+	is_LineCommentNode,
+	is_MacroInvocation,
+	is_MacroRule,
+	is_MissingNode,
+	is_Node,
+	is_PunctuationToken,
+	is_UnionPattern,
+	start,
+} from "jinx-rust/utils";
+import { getCommentChildNodes, isTransformed, transform_ast } from "../transform";
+import { Narrow, assert, color, each, exit, iLast, is_array, map_tagged_template, print_string } from "../utils/common";
+import {
+	CF,
+	escapeComments,
+	getComments,
+	handleEndOfLineComment,
+	handleOwnLineComment,
+	handleRemainingComment,
+	hasBreaklineAfter,
+	hasComment,
+	isDangling,
+	isPrettierIgnoreAttribute,
+	setDidPrintComment,
+	withComments,
+} from "./comments";
+import { withCheckContext } from "./complexity";
+import { isNoopExpressionStatement, maybeEmptyLine } from "./core";
+import { AstPath, CustomOptions, Doc, Plugin, Symbol_comments, group, hardline, indent, line, softline, ParserOptions } from "./external";
+import { printer } from "./printer";
+import { needsInnerParens, needsOuterSoftbreakParens, shouldPrintOuterAttributesAbove } from "./styling";
+
+export function is_printing_macro() {
+	return getContext().path.stack.some((node) => is_Node(node) && (is_MacroInvocation(node) || is_Attribute(node)));
+}
+
+export function assertPathAtNode(name: string, node: Node, ...ctx: any[]) {
+	__DEV__: if (getNode() !== node)
+		exit(`Attempted to call ${name}() in wrong prettier path context`, { asserted: node, actual: getNode() }, ...ctx);
+}
+
+export function f(...args: [strings: TemplateStringsArray, ...values: Doc[]]) {
+	let cancel = false;
+	const res = map_tagged_template(args, (doc) => {
+		cancel ||= !doc || (is_array(doc) && doc.length === 0);
+		return doc;
+	});
+	return cancel ? "" : res;
+}
+
+export function sg_single(s: TemplateStringsArray, v_0: Doc) {
+	return group([s[0], indent([softline, v_0]), softline, s[1]]);
+}
+export function sg_duo(s: TemplateStringsArray, v_0: Doc, v_1: Doc) {
+	return group([s[0], indent([softline, v_0, s[1], line, v_1]), softline, s[2]]);
+}
+
+let ctx: {
+	path: AstPath;
+	options: CustomOptions;
+	print: (path?: AstPath | string | [] | undefined, args?: any) => Doc;
+	args: any;
+};
+
+export const getNode = () => ctx.path.stack[ctx.path.stack.length - 1] as Node;
+export const stackIncludes = (x: Node | string | number) => ctx.path.stack.includes(x);
+export const getContext = () => ctx;
+export const getOptions = () => ctx.options;
+export const getProgram = () => ctx.options.rsParsedFile.program;
+export const getAllComments = () => ctx.options[Symbol_comments];
+export const getParentNode = (child?: Node) => {
+	__DEV__: if (child) assertPathAtNode("getParentNode", child);
+	return ctx.path.getParentNode();
+};
+export const getGrandParentNode = () => ctx.path.getParentNode(1) as Node;
+export const getPrintFn = <T extends Node>(forNode?: T | undefined): print<T> => {
+	__DEV__: if (forNode) assertPathAtNode("getPrintFn", forNode);
+	return print as print<T>;
+};
+
+const get = (property: keyof any) => getNode()[property];
+const has = (property: keyof any) => !!get(property);
+
+export function pathCall<T extends Node, K extends keyof NodeProps<T> & keyof T, R>(node: T, key: K, fn: (child: T[K]) => R): R {
+	return ctx.path.call(() => fn(getNode() as any), key as any);
+}
+
+export function pathCallEach<T extends Node, K extends AK<T>>(
+	node: T,
+	key: K, // @ts-expect-error
+	fn: (child: NonNullable<T[K]>[number], index: number) => void
+) {
+	__DEV__: assertPathAtNode("", node); // @ts-expect-error
+	ctx.path.each((_, i) => fn(getNode() as any, i), key);
+}
+
+export function pathCallAtParent<T extends Node, R>(parent: T, fn: (parent: T) => R): R {
+	return ctx.path.callParent(() => {
+		__DEV__: assertPathAtNode("pathCallParent", parent);
+		return fn(parent);
+	});
+}
+export function pathCallParentOf<T extends Node, R>(child: Node, fn: (parent: T) => R): R {
+	__DEV__: assertPathAtNode("pathCallParentOf", child);
+	return ctx.path.callParent((p) => fn(getNode() as any));
+}
+
+export function pathCallTopMostIfBlockExpression<R>(node: IfBlockExpression, fn: (node: IfBlockExpression) => R): R {
+	const parent = getParentNode(node)!;
+	return is_ElseBlock(node, parent) ? pathCallAtParent(parent, (parent) => pathCallTopMostIfBlockExpression(parent, fn)) : fn(node);
+}
+
+function print(property?: any, args?: any): Doc | Doc[] {
+	if (!property) return ctx.print(undefined!, args);
+	if (Array.isArray(property)) return ctx.print(property as any, args);
+	const value = get(property);
+	return !!value ? (Array.isArray(value) ? ctx.path.map(ctx.print, property) : ctx.print(property, args)) : "";
+}
+
+namespace print {
+	export function b(property: string, res = `${property} `): Doc {
+		return has(property) ? res : "";
+	}
+	export function map(property: string, mapItem?: MapFn<any, any>): Doc[] {
+		return !has(property) ? [] : ctx.path.map(mapItem ? (p, i, a) => mapItem(a[i], i, a) : () => ctx.print(), property);
+	}
+	export function join(property: string, sep: SepFn<any, any> | Doc, trailingSep: TrailingSepFn<any, any> | Doc = ""): Doc[] {
+		return map_join(property, () => ctx.print(), sep, trailingSep);
+	}
+	export function map_join(
+		property: string,
+		mapFn: MapFn<any, any>,
+		sep: SepFn<any, any> | Doc,
+		sepTrailing: TrailingSepFn<any, any> | Doc = ""
+	) {
+		const sepFn = typeof sep === "function" ? sep : () => sep;
+		return map(property, (v, i, a) => [
+			mapFn(v, i, a),
+			iLast(i, a as any)
+				? typeof sepTrailing === "function"
+					? sepTrailing(v)
+					: sepTrailing
+				: sepFn(v, a[i + 1], i === 0 ? undefined : a[i - 1]),
+		]);
+	}
+}
+
+// prettier-ignore
+type SepFn<T extends Node = Node, K extends AK<T> = AK<T>> = <A extends AV<T, K>>(item: A[number], next_item: A[number], prev_item: A[number] | undefined) => Doc;
+type MapFn<T extends Node = Node, K extends AK<T> = AK<T>> = <A extends AV<T, K>>(item: A[number], index: number, arr: A) => Doc;
+type TrailingSepFn<T extends Node = Node, K extends AK<T> = AK<T>> = <A extends AV<T, K>>(item: A[number]) => Doc;
+type AV<T extends Node, K extends keyof T> = Extract<NonNullable<T[K]>, ReadonlyArray<unknown>>;
+type AK<T extends Node> = keyof ArrayProps<T> & keyof T;
+// type AK<T extends Node> = keyof PickProps<T, {nodeType:number}|{nodeType:number}[]> & keyof T;
+
+export interface print<T extends Node> {
+	(property?: [], args?: any): Doc;
+	(property?: [AK<T>, number], args?: any): Doc;
+	(property?: AK<T>, args?: any): Doc[];
+	// (property?: T extends {rules:{nodeType:number}|{nodeType:number}[]} ? "rules" : never, args?: any): Doc[];
+	(property?: keyof NodeProps<T> & keyof T, args?: any): Doc;
+	b(property: keyof BoolProps<T>, res?: string): Doc;
+	map<K extends AK<T>>(property: K & keyof ArrayProps<T>, mapFn?: MapFn<T, K>): Doc[];
+	join<K extends AK<T>>(property: K, sep: SepFn<T, K> | Doc, trailingSep?: TrailingSepFn<T, K> | Doc): Doc[];
+	map_join<K extends AK<T>>(property: K, mapFn: MapFn<T, K>, sep: SepFn<T, K> | Doc, trailingSep?: TrailingSepFn<T, K> | Doc): Doc[];
+}
+
+function genericPrint() {
+	return withCheckContext(() => {
+		const node = getNode();
+		__DEV__: assert(node.nodeType in printer);
+
+		let printed: Doc = hasPrettierIgnore(node) //
+			? node.loc.getOwnText()
+			: printer[node.nodeType]!(print as any, node as never);
+
+		const inner_parens = needsInnerParens(node);
+
+		if (inner_parens) {
+			printed = group(["(", printed, ")"]);
+		}
+
+		if (hasAttributes(node)) {
+			const print_above = shouldPrintOuterAttributesAbove(node); /*  || node.attributes.length > 1 */
+			printed = [
+				...print.join(
+					"attributes",
+					(attr) =>
+						print_above
+							? maybeEmptyLine(attr)
+							: is_LineCommentNode(attr) || (is_BlockCommentNode(attr) && hasBreaklineAfter(attr))
+							? hardline
+							: " ",
+					(attr) =>
+						print_above && is_DocCommentAttribute(attr)
+							? maybeEmptyLine(attr)
+							: print_above || is_LineCommentNode(attr) || (is_BlockCommentNode(attr) && hasBreaklineAfter(attr))
+							? hardline
+							: " "
+				),
+				printed,
+			];
+		}
+
+		printed = withComments(
+			node,
+			printed,
+			hasPrettierIgnore(node) || ((is_Attribute(node) || is_MacroInvocation(node)) && !isTransformed(node))
+				? escapeComments(0, (comment) => node.loc.ownContains(comment))
+				: is_MacroRule(node)
+				? escapeComments(0, (comment) => node.transform.loc.contains(comment))
+				: is_UnionPattern(getParentNode() ?? ({ nodeType: 0 } as any))
+				? new Set(getComments(node, CF.Leading | CF.Trailing, (comment) => !isDangling(comment)))
+				: undefined
+		);
+
+		if (!inner_parens && needsOuterSoftbreakParens(node)) {
+			printed = [group(["(", indent([softline, printed]), softline, ")"])];
+		}
+
+		return printed;
+	});
+
+	function hasPrettierIgnore(node: Node) {
+		return (
+			(node as any).prettierIgnore ||
+			hasComment(node, CF.PrettierIgnore) ||
+			(hasAttributes(node) && node.attributes.some(isPrettierIgnoreAttribute))
+		);
+	}
+}
+
+export function canAttachComment(n: Node) {
+	return !is_Comment(n) && !isNoopExpressionStatement(n) && !is_MissingNode(n) && !is_PunctuationToken(n);
+}
+
+export const plugin: Plugin<Node> = {
+	languages: [
+		{
+			name: "Rust",
+			aliases: ["rs"],
+			parsers: ["jinx-rust"],
+			extensions: [".rs", ".rs.in"],
+			linguistLanguageId: 327,
+			vscodeLanguageIds: ["rust"],
+			tmScope: "source.rust",
+			aceMode: "rust",
+			codemirrorMode: "rust",
+			codemirrorMimeType: "text/x-rustsrc",
+		},
+	],
+	parsers: {
+		"jinx-rust": {
+			astFormat: "jinx-rust",
+			locStart: start,
+			locEnd: end,
+			parse(code: string, options: ParserOptions<Node> & Partial<CustomOptions>) {
+				const customOptions = options as CustomOptions;
+				ctx = { options: customOptions } as any;
+
+				customOptions.rsParsedFile = rs.parseFile((customOptions.originalText = code), { filepath: customOptions.filepath });
+
+				customOptions.actuallyMethodNodes = new WeakSet();
+				customOptions.danglingAttributes = [];
+				customOptions.comments = [];
+
+				transform_ast(customOptions);
+
+				const comments: AttributeOrComment[] = [];
+				insertNodes(comments, customOptions.comments);
+				insertNodes(comments, customOptions.danglingAttributes);
+
+				// @ts-expect-error
+				customOptions.rsParsedFile.program.comments = comments;
+
+				customOptions.commentSpans = new Map(comments.map((n) => [start(n), end(n)]));
+
+				return customOptions.rsParsedFile.program;
+			},
+		},
+	},
+	printers: {
+		"jinx-rust": {
+			preprocess: (node: Node) => (node as Program).loc?.src || node,
+			print(path, options, print, args) {
+				if (path.stack.length === 1) {
+					__DEV__: Narrow<CustomOptions>(options);
+					ctx = { path, options, print: print as any, args };
+					try {
+						const printed = genericPrint();
+						__DEV__: devEndCheck(printed);
+						return printed;
+					} finally {
+						ctx = undefined!;
+					}
+				} else if (args || ctx.args) {
+					const prev_args = ctx.args;
+					try {
+						ctx.args = args;
+						return genericPrint();
+					} finally {
+						ctx.args = prev_args;
+					}
+				} else {
+					return genericPrint();
+				}
+			},
+			hasPrettierIgnore: () => false,
+			willPrintOwnComments: () => true,
+			isBlockComment: (node: Node): boolean => {
+				return is_AttributeOrComment(node) && is_BlockCommentKind(node as any);
+			},
+			canAttachComment: canAttachComment,
+			getCommentChildNodes: getCommentChildNodes,
+			printComment: genericPrint,
+			handleComments: {
+				// @ts-expect-error
+				avoidAstMutation: true,
+				ownLine: handleOwnLineComment,
+				endOfLine: handleEndOfLineComment,
+				remaining: handleRemainingComment,
+			},
+		},
+	},
+	options: {},
+	defaultOptions: {
+		// default prettier (2)  -> rustfmt (4)
+		tabWidth: 4,
+		// default prettier (80) -> rustfmt (100)
+		printWidth: 100,
+	},
+};
+
+function devEndCheck(printed: Doc) {
+	let first = false;
+	const comments = getAllComments();
+	each(comments, (comment, index) => {
+		if (!comment.printed) {
+			if (!first) (first = true), console.log(color.red(`Unprinted comments:`));
+			const len = 40;
+			const msg =
+				color.magenta(
+					(comment.marker ? `Dangling "${comment.marker}" ` : "") +
+						(is_Attribute(comment) ? "Attribute " : is_DocCommentAttribute(comment) ? "DocCommentAttribute" : "Comment") +
+						` ${index}/${comments.length}` +
+						color.yellow(` ${print_string(comment.loc.sliceText(0, len))}${comment.loc.len() > len ? " ..." : ""}`)
+				) + color.grey(`\n    at ${comment.loc.url()}`);
+			if (globalThis.TESTS_FORMAT_DEV) exit(msg);
+			else console.log(msg);
+			setDidPrintComment(comment);
+		}
+	});
+}

frontend/src/common/prettier/plugins/rust/format/printer.ts

@@ -0,0 +1,719 @@
+import { DelimKind, Node, NodeType, NTMap } from "jinx-rust";
+import {
+	getDelimChars,
+	hasSuffix,
+	is_ArrayOrTupleLiteral,
+	is_BlockExpression,
+	is_ClosureFunctionExpression,
+	is_Identifier,
+	is_IfBlockExpression,
+	is_LiteralNumberLike,
+	is_StructLiteral,
+	start,
+} from "jinx-rust/utils";
+import {
+	BlockLikeMacroInvocation,
+	CallLikeMacroInvocation,
+	is_BlockLikeMacroInvocation,
+	is_CallLikeMacroInvocation,
+	isTransformed,
+} from "../transform";
+import { exit } from "../utils/common";
+import { hasComment, print_comment } from "./comments";
+import { isSimpleType } from "./complexity";
+import {
+	adjustClause,
+	parenthesize_if_break,
+	printAnnotatedPattern,
+	printArrayLike,
+	printArrowFunction,
+	printAssignment,
+	printBinaryishExpression,
+	printBlockBody,
+	printBodyOrCases,
+	printCallArguments,
+	printCallExpression,
+	printCondition,
+	printDanglingCommentsForInline,
+	printDeclarationTypeBounds,
+	printEnumBody,
+	printFlowControlExpression,
+	printGenerics_x_whereBounds,
+	printIfBlock,
+	printIfBlockCondition,
+	printImplTraitForType,
+	printLtBounds,
+	printLtParameters,
+	printMacroRules,
+	printMaybeBlockBody,
+	printMemberExpression,
+	printNumber,
+	printObject,
+	printParametersAndReturnType,
+	printRuleMatch,
+	printRuleTransform,
+	printTypeAnnotation,
+	printTypeArguments,
+	printTypeBounds,
+	printUnaryExpression,
+	printUnionPattern,
+} from "./core";
+import { DCM, Doc, group, hardline, ifBreak, indent, join, line, softline, willBreak } from "./external";
+import { f, getOptions, getParentNode, pathCall, sg_duo, sg_single, type print } from "./plugin";
+import { needsParens, stmtNeedsSemi } from "./styling";
+
+type nPrint<T extends Node> = (print: print<T>, node: T) => Doc | never;
+
+export const printer: { [K in NodeType]: nPrint<Extract<NTMap[K], Node>> } = {
+	[NodeType.MissingNode](print, node) {
+		return "";
+	},
+	[NodeType.SourceFile](print, node) {
+		return [
+			print.b("UTF8BOM", "\uFEFF"), //
+			print("shebang"),
+			print("program"),
+		];
+	},
+	[NodeType.Shebang](print, node) {
+		return [`#!${node.value}`, hardline];
+	},
+	[NodeType.Program](print, node) {
+		return printBodyOrCases(print, node);
+	},
+	[NodeType.Snippet](print, node) {
+		exit.never();
+	},
+	[NodeType.Identifier](print, node) {
+		return node.name;
+	},
+	[NodeType.Index](print, node) {
+		return node.name;
+	},
+	[NodeType.LbIdentifier](print, node) {
+		return node.name;
+	},
+	[NodeType.McIdentifier](print, node) {
+		return node.name;
+	},
+	[NodeType.LtIdentifier](print, node) {
+		return node.name;
+	},
+	[NodeType.PunctuationToken](print, node) {
+		return node.token;
+	},
+	[NodeType.DelimGroup](print, node) {
+		return node.loc.getOwnText();
+	},
+	[NodeType.Literal](print, node) {
+		let { value } = node;
+		if (is_LiteralNumberLike(node)) value = printNumber(value);
+		return hasSuffix(node) ? [value, print("suffix")] : value;
+	},
+	[NodeType.ItemPath](print, node) {
+		return [print("namespace"), "::", print("segment")];
+	},
+	[NodeType.ExpressionPath](print, node) {
+		return [print("namespace"), "::", print("segment")];
+	},
+	[NodeType.TypePath](print, node) {
+		return [print("namespace"), "::", print("segment")];
+	},
+	[NodeType.Comment](print, node) {
+		return print_comment(node);
+	},
+	[NodeType.DocCommentAttribute](print, node) {
+		return print_comment(node);
+	},
+	[NodeType.Attribute](print, node) {
+		return [
+			node.inner ? "#![" : "#[",
+			isTransformed(node)
+				? [print("segments"), printDanglingCommentsForInline(node)] //
+				: node.segments.loc.sliceText(1, -1).trim(),
+			"]",
+		];
+	},
+	[NodeType.MacroInvocation](print, node) {
+		const hasCurlyBrackets = node.segments.dk === DelimKind["{}"];
+		const delim = getDelimChars(node.segments);
+		if (node.segments.length === 0) {
+			return [print("callee"), "!", hasCurlyBrackets ? " " : "", delim.left, printDanglingCommentsForInline(node), delim.right];
+		}
+		if (isTransformed(node)) {
+			if (is_CallLikeMacroInvocation(node)) {
+				return [print("callee"), "!", printCallArguments(print as print<CallLikeMacroInvocation>, node)];
+			}
+			if (is_BlockLikeMacroInvocation(node)) {
+				return [print("callee"), "!", " ", printBlockBody(print as print<BlockLikeMacroInvocation>, node)];
+			}
+		}
+		let content = node.segments.loc.sliceText(1, -1);
+		if (content.trim().length === 0) {
+			content = "";
+		} else if (!content.includes("\n")) {
+			content = content.trim();
+			if (hasCurlyBrackets) content = " " + content + " ";
+		}
+		return [print("callee"), "!", hasCurlyBrackets ? " " : "", delim.left, content, delim.right];
+	},
+	[NodeType.MacroRulesDeclaration](print, node) {
+		return ["macro_rules! ", print("id"), printMacroRules(print, node)];
+	},
+	[NodeType.MacroRuleDeclaration](print, node) {
+		return [printRuleMatch(print, node), " => ", printRuleTransform(print, node), ";"];
+	},
+	[NodeType.MacroDeclaration](print, node) {
+		return [print("pub"), "macro ", print("id"), printMacroRules(print, node)];
+	},
+	[NodeType.MacroInlineRuleDeclaration](print, node) {
+		return [printRuleMatch(print, node), " ", printRuleTransform(print, node)];
+	},
+	[NodeType.MacroGroup](print, node) {
+		return node.loc.getOwnText();
+	},
+	[NodeType.MacroParameterDeclaration](print, node) {
+		return [print("id"), ":", print("ty")];
+	},
+	[NodeType.PubSpecifier](print, node) {
+		if (!node.location) return "pub ";
+		if (is_Identifier(node.location)) {
+			switch (node.location.name) {
+				case "crate":
+					if (start(node) === start(node.location)) {
+						return "crate ";
+					} else {
+						return ["pub(", print("location"), ") "];
+					}
+				case "self":
+				case "super":
+					return ["pub(", print("location"), ") "];
+			}
+		}
+		return ["pub(in ", print("location"), ") "];
+	},
+	[NodeType.ExternSpecifier](print, node) {
+		return ["extern ", f`${print("abi")} `];
+	},
+	[NodeType.ExpressionStatement](print, node) {
+		return [print("expression"), stmtNeedsSemi(node) ? ";" : ""];
+	},
+	[NodeType.UseStatement](print, node) {
+		return [print("pub"), "use ", print("import"), ";"];
+	},
+	[NodeType.DestructuredImport](print, node) {
+		if (node.specifiers.length === 0) return [print("source"), "::{", printDanglingCommentsForInline(node, DCM["specifiers"]), "}"];
+		let space = true;
+		__DEV__: if (globalThis.TESTS_FORMAT_DEV) space = false;
+		return [
+			print("source"),
+			group([
+				"::{",
+				indent([space ? line : softline, join([",", line], print("specifiers")), ifBreak(",")]),
+				space ? line : softline,
+				"}",
+			]),
+		];
+	},
+	[NodeType.AmbientImport](print, node) {
+		return f`${print("source")}::*` || "*";
+	},
+	[NodeType.AnonymousImport](print, node) {
+		return [print("source"), " as ", "_"];
+	},
+	[NodeType.NamedImport](print, node) {
+		return [print("source"), f` as ${print("local")}`];
+	},
+	[NodeType.ExternCrateStatement](print, node) {
+		return [print("pub"), "extern crate ", print("import"), ";"];
+	},
+	[NodeType.TypeAliasDeclaration](print, node) {
+		return [
+			print("pub"),
+			"type",
+			printAssignment(
+				printGenerics_x_whereBounds(print, node, printDeclarationTypeBounds(print, node, ":")), //
+				" =",
+				"typeExpression"
+			),
+			";",
+		];
+	},
+	[NodeType.LetVariableDeclaration](print, node) {
+		return [
+			"let ",
+			printAssignment(
+				printAnnotatedPattern(print, node), //
+				" =",
+				"expression"
+			),
+			f` else ${print("else")}`,
+			";",
+		];
+	},
+	[NodeType.ConstVariableDeclaration](print, node) {
+		return [
+			print("pub"),
+			"const ",
+			printAssignment(
+				printAnnotatedPattern(print, node), //
+				" =",
+				"expression"
+			),
+			";",
+		];
+	},
+	[NodeType.StaticVariableDeclaration](print, node) {
+		return [
+			print("pub"),
+			"static ",
+			printAssignment(
+				printAnnotatedPattern(print, node), //
+				" =",
+				"expression"
+			),
+			";",
+		];
+	},
+	[NodeType.ModuleDeclaration](print, node) {
+		return [
+			print("pub"), //
+			print.b("unsafe"),
+			"mod ",
+			print("id"),
+			printMaybeBlockBody(print, node),
+		];
+	},
+	[NodeType.ExternBlockDeclaration](print, node) {
+		return [
+			print("pub"), //
+			print.b("unsafe"),
+			"extern ",
+			f`${print("abi")} `,
+			printBlockBody(print, node),
+		];
+	},
+	[NodeType.FunctionDeclaration](print, node) {
+		return [
+			print("pub"),
+			print.b("const"),
+			print.b("async"),
+			print.b("unsafe"),
+			print("extern"),
+			"fn",
+			printGenerics_x_whereBounds(print, node, printParametersAndReturnType(node)),
+			printMaybeBlockBody(print, node),
+		];
+	},
+	[NodeType.FunctionSelfParameterDeclaration](print, node) {
+		return group([print.b("ref", "&"), f`${print("lt")} `, print.b("mut"), "self", printTypeAnnotation(print, node)]);
+	},
+	[NodeType.FunctionParameterDeclaration](print, node) {
+		return group(printAnnotatedPattern(print, node));
+	},
+	[NodeType.FunctionSpread](print, node) {
+		return "...";
+	},
+	[NodeType.StructDeclaration](print, node) {
+		return [print("pub"), "struct", printGenerics_x_whereBounds(print, node, ""), printObject(print, node)];
+	},
+	[NodeType.StructPropertyDeclaration](print, node) {
+		return [print("pub"), print("id"), printTypeAnnotation(print, node)];
+	},
+	[NodeType.TupleStructDeclaration](print, node) {
+		return [print("pub"), "struct", printGenerics_x_whereBounds(print, node, printArrayLike(print, node)), ";"];
+	},
+	[NodeType.TupleStructItemDeclaration](print, node) {
+		return [print("pub"), print("typeAnnotation")];
+	},
+	[NodeType.UnionDeclaration](print, node) {
+		return [print("pub"), "union", printGenerics_x_whereBounds(print, node, ""), printObject(print, node)];
+	},
+	[NodeType.EnumDeclaration](print, node) {
+		return [print("pub"), "enum", printGenerics_x_whereBounds(print, node, ""), printEnumBody(print, node)];
+	},
+	[NodeType.EnumMemberDeclaration](print, node) {
+		return [
+			print("pub"),
+			printAssignment(
+				print("id"), //
+				" =",
+				"value"
+			),
+		];
+	},
+	[NodeType.EnumMemberTupleDeclaration](print, node) {
+		return [
+			print("pub"),
+			printAssignment(
+				[print("id"), printArrayLike(print, node)], //
+				" =",
+				"value"
+			),
+		];
+	},
+	[NodeType.EnumMemberStructDeclaration](print, node) {
+		return [
+			print("pub"),
+			printAssignment(
+				[print("id"), printObject(print, node)], //
+				" =",
+				"value"
+			),
+		];
+	},
+	[NodeType.TraitDeclaration](print, node) {
+		return [
+			print("pub"),
+			print.b("unsafe"),
+			"trait",
+			printGenerics_x_whereBounds(print, node, printDeclarationTypeBounds(print, node, ":")),
+			adjustClause(node, printBlockBody(print, node)),
+		];
+	},
+	[NodeType.AutoTraitDeclaration](print, node) {
+		return [
+			print("pub"),
+			print.b("unsafe"),
+			"auto trait ",
+			print("id"),
+			" ",
+			printBlockBody(print, node as any), // see "transform.ts"
+		];
+	},
+	[NodeType.TraitAliasDeclaration](print, node) {
+		return [
+			print("pub"),
+			print.b("unsafe"),
+			"trait",
+			printGenerics_x_whereBounds(print, node, printDeclarationTypeBounds(print, node, " =")),
+			";",
+		];
+	},
+	[NodeType.ImplDeclaration](print, node) {
+		return [
+			print("pub"),
+			print.b("unsafe"),
+			"impl",
+			printGenerics_x_whereBounds(print, node, [print.b("const"), printImplTraitForType(print, node)]),
+			adjustClause(node, printBlockBody(print, node)),
+		];
+	},
+	[NodeType.NegativeImplDeclaration](print, node) {
+		return [
+			print("pub"),
+			"impl",
+			printGenerics_x_whereBounds(print, node, ["!", printImplTraitForType(print, node)]),
+			" ",
+			printBlockBody(print, node as any), // see "transform.ts"
+		];
+	},
+	[NodeType.ExpressionTypeSelector](print, node) {
+		return group(["<", print("typeTarget"), f` as ${print("typeExpression")}`, ">"]);
+	},
+	[NodeType.ExpressionTypeCast](print, node) {
+		return [print("typeCallee"), f`::${printTypeArguments(print, node)}`];
+	},
+	[NodeType.ExpressionAsTypeCast](print, node) {
+		return [print("expression"), " as ", print("typeExpression")];
+	},
+	[NodeType.ReturnExpression](print, node) {
+		return ["return", printFlowControlExpression(print, node)];
+	},
+	[NodeType.BreakExpression](print, node) {
+		return ["break", f` ${print("label")}`, printFlowControlExpression(print, node)];
+	},
+	[NodeType.ContinueExpression](print, node) {
+		return ["continue", f` ${print("label")}`];
+	},
+	[NodeType.YieldExpression](print, node) {
+		return ["yield", printFlowControlExpression(print, node)];
+	},
+	[NodeType.RangeLiteral](print, node) {
+		return [print("lower"), "..", print.b("last", "="), print("upper")];
+	},
+	[NodeType.CallExpression](print, node) {
+		return printCallExpression(print, node);
+	},
+	[NodeType.MemberExpression](print, node) {
+		return printMemberExpression(print, node);
+	},
+	[NodeType.AwaitExpression](print, node) {
+		return [print("expression"), ".await"];
+	},
+	[NodeType.UnwrapExpression](print, node) {
+		return [print("expression"), "?"];
+	},
+	[NodeType.ParenthesizedExpression](print, node) {
+		exit.never();
+		const shouldHug = !hasComment(node.expression) && (is_ArrayOrTupleLiteral(node.expression) || is_StructLiteral(node.expression));
+		if (shouldHug) return ["(", print("expression"), ")"];
+		return group(["(", indent([softline, print("expression")]), softline, ")"]);
+	},
+	[NodeType.MinusExpression](print, node) {
+		return printUnaryExpression("-", node);
+	},
+	[NodeType.NotExpression](print, node) {
+		return printUnaryExpression("!", node);
+	},
+	[NodeType.OrExpression](print, node) {
+		return printBinaryishExpression(print, node);
+	},
+	[NodeType.AndExpression](print, node) {
+		return printBinaryishExpression(print, node);
+	},
+	[NodeType.ReassignmentExpression](print, node) {
+		return printAssignment(print("left"), " =", "right");
+	},
+	[NodeType.UnassignedExpression](print, node) {
+		return "_";
+	},
+	[NodeType.OperationExpression](print, node) {
+		return printBinaryishExpression(print, node);
+	},
+	[NodeType.ReassignmentOperationExpression](print, node) {
+		return printAssignment(print("left"), " " + node.kind, "right");
+	},
+	[NodeType.ComparisonExpression](print, node) {
+		return printBinaryishExpression(print, node);
+	},
+	[NodeType.LetScrutinee](print, node) {
+		return ["let ", printAssignment(print("pattern"), " =", "expression")];
+	},
+	[NodeType.ClosureFunctionExpression](print, node) {
+		return printArrowFunction(print, node);
+	},
+	[NodeType.ClosureFunctionParameterDeclaration](print, node) {
+		return group(printAnnotatedPattern(print, node));
+	},
+	[NodeType.BlockExpression](print, node) {
+		return [
+			f`${print("label")}: `,
+			print.b("const"),
+			print.b("async"),
+			print.b("move"),
+			print.b("unsafe"),
+			printBlockBody(print, node),
+		];
+	},
+	[NodeType.LoopBlockExpression](print, node) {
+		return [f`${print("label")}: `, "loop ", printBlockBody(print, node)];
+	},
+	[NodeType.WhileBlockExpression](print, node) {
+		return [f`${print("label")}: `, "while ", printCondition(print, node), printBlockBody(print, node)];
+	},
+	[NodeType.ForInBlockExpression](print, node) {
+		return [f`${print("label")}: `, "for ", print("pattern"), " in ", print("expression"), " ", printBlockBody(print, node)];
+	},
+	[NodeType.IfBlockExpression](print, node) {
+		return [f`${print("label")}: `, printIfBlock(print, node)];
+	},
+	[NodeType.TryBlockExpression](print, node) {
+		return [f`${print("label")}: `, "try ", printBlockBody(print, node)];
+	},
+	[NodeType.MatchExpression](print, node) {
+		const id = Symbol("match");
+		const expr = print("expression");
+		const needs_parens = pathCall(node, "expression", needsParens);
+
+		let printed: Doc = [
+			f`${print("label")}: `,
+			"match ",
+			needs_parens ? expr : group([indent([softline, expr]), softline], { id }),
+			needs_parens ? " " : !willBreak(expr) ? ifBreak("", " ", { groupId: id }) : "" /*  ifBreak("", " ", { groupId: id }) */,
+			printBlockBody(print, node),
+		];
+
+		const parent = getParentNode()!;
+		if (is_ClosureFunctionExpression(parent) && parent.expression === node) {
+			printed = parenthesize_if_break([indent([softline, printed]), softline]);
+		}
+		return printed;
+	},
+	[NodeType.MatchExpressionCase](print, node) {
+		return group([
+			group(print("pattern")),
+			" ",
+			printIfBlockCondition(print, node),
+			"=>", //
+			(is_BlockExpression(node.expression) || is_IfBlockExpression(node.expression)) &&
+			!hasComment(node.expression, 0, (comment) => getOptions().danglingAttributes.includes(comment as any))
+				? [" ", print("expression")]
+				: group(indent([line, print("expression")])),
+		]);
+		return printAssignment(
+			[print("pattern"), " ", printIfBlockCondition(print, node)], //
+			"=>",
+			"expression"
+		);
+		return [print("pattern"), " ", printIfBlockCondition(print, node)];
+	},
+	[NodeType.StructLiteral](print, node) {
+		return [print("struct"), printObject(print, node)];
+	},
+	[NodeType.StructLiteralPropertyShorthand](print, node) {
+		return print("value");
+	},
+	[NodeType.StructLiteralProperty](print, node) {
+		return [print("key"), ": ", print("value")];
+	},
+	[NodeType.StructLiteralPropertySpread](print, node) {
+		return ["..", print("expression")];
+	},
+	[NodeType.StructLiteralRestUnassigned](print, node) {
+		return "..";
+	},
+	[NodeType.ArrayLiteral](print, node) {
+		return printArrayLike(print, node);
+	},
+	[NodeType.SizedArrayLiteral](print, node) {
+		return sg_duo`[${print("initExpression")};${print("sizeExpression")}]`;
+	},
+	[NodeType.TupleLiteral](print, node) {
+		return printArrayLike(print, node);
+	},
+	[NodeType.ReferenceExpression](print, node) {
+		return printUnaryExpression(["&", print.b("mut")], node);
+	},
+	[NodeType.RawReferenceExpression](print, node) {
+		return printUnaryExpression(`&raw ${node.kind} `, node);
+	},
+	[NodeType.DereferenceExpression](print, node) {
+		return printUnaryExpression("*", node);
+	},
+	[NodeType.BoxExpression](print, node) {
+		return printUnaryExpression("box ", node);
+	},
+	[NodeType.UnionPattern](print, node) {
+		return printUnionPattern(print, node);
+	},
+	[NodeType.ParenthesizedPattern](print, node) {
+		exit.never();
+		return sg_single`(${print("pattern")})`;
+	},
+	[NodeType.RestPattern](print, node) {
+		return "..";
+	},
+	[NodeType.WildcardPattern](print, node) {
+		return "_";
+	},
+	[NodeType.PatternVariableDeclaration](print, node) {
+		return [print.b("ref"), print.b("mut"), printAssignment(print("id"), " @", "pattern")];
+	},
+	[NodeType.StructPattern](print, node) {
+		return [print("struct"), printObject(print, node)];
+	},
+	[NodeType.StructPatternPropertyDestructured](print, node) {
+		return [print("key"), ": ", print("pattern")];
+	},
+	[NodeType.StructPatternPropertyShorthand](print, node) {
+		return [print.b("box"), print.b("ref"), print.b("mut"), print("id")];
+	},
+	[NodeType.TuplePattern](print, node) {
+		return [print("struct"), printArrayLike(print, node)];
+	},
+	[NodeType.ArrayPattern](print, node) {
+		return printArrayLike(print, node);
+	},
+	[NodeType.ReferencePattern](print, node) {
+		return ["&", print.b("mut"), print("pattern")];
+	},
+	[NodeType.BoxPattern](print, node) {
+		return ["box ", print("pattern")];
+	},
+	[NodeType.MinusPattern](print, node) {
+		return ["-", print("pattern")];
+	},
+	[NodeType.RangePattern](print, node) {
+		return [print("lower"), "..", print.b("last", "="), print("upper")];
+	},
+	[NodeType.TypeCall](print, node) {
+		return [print("typeCallee"), printTypeArguments(print, node)];
+	},
+	[NodeType.TypeCallNamedArgument](print, node) {
+		return printAssignment(print("target"), " =", "typeExpression");
+	},
+	[NodeType.TypeCallNamedBound](print, node) {
+		return [print("typeTarget"), printTypeBounds(":", print, node)];
+	},
+	[NodeType.LtElided](print, node) {
+		return "'_";
+	},
+	[NodeType.LtStatic](print, node) {
+		return "'static";
+	},
+	[NodeType.TypeNever](print, node) {
+		return "!";
+	},
+	[NodeType.TypeInferred](print, node) {
+		return "_";
+	},
+	[NodeType.GenericTypeParameterDeclaration](print, node) {
+		return printAssignment(
+			[print("id"), printTypeBounds(":", print, node)], //
+			" =",
+			"typeDefault"
+		);
+	},
+	[NodeType.ConstTypeParameterDeclaration](print, node) {
+		return [
+			"const ",
+			printAssignment(
+				[print("id"), printTypeAnnotation(print, node)], //
+				" =",
+				"typeDefault"
+			),
+		];
+	},
+	[NodeType.GenericLtParameterDeclaration](print, node) {
+		return [print("id"), printLtBounds(":", print, node)];
+	},
+	[NodeType.WhereTypeBoundDeclaration](print, node) {
+		return [printLtParameters(print, node), print("typeTarget"), printTypeBounds(":", print, node)];
+	},
+	[NodeType.WhereLtBoundDeclaration](print, node) {
+		return [print("ltTarget"), printLtBounds(":", print, node)];
+	},
+	[NodeType.TypeTraitBound](print, node) {
+		return [print.b("maybeConst", "~const "), print.b("optional", "?"), printLtParameters(print, node), print("typeExpression")];
+	},
+	[NodeType.TypeDynBounds](print, node) {
+		return printTypeBounds("dyn", print, node);
+	},
+	[NodeType.TypeImplBounds](print, node) {
+		return printTypeBounds("impl", print, node);
+	},
+	[NodeType.TypeFnPointer](print, node) {
+		return [printLtParameters(print, node), print.b("unsafe"), print("extern"), "fn", printParametersAndReturnType(node)];
+	},
+	[NodeType.TypeFnPointerParameter](print, node) {
+		return [f`${print("id")}: `, print("typeAnnotation")];
+	},
+	[NodeType.TypeFunction](print, node) {
+		return [print("callee"), printParametersAndReturnType(node)];
+	},
+	[NodeType.TypeTuple](print, node) {
+		return printArrayLike(print, node);
+	},
+	[NodeType.TypeSizedArray](print, node) {
+		return sg_duo`[${print("typeExpression")};${print("sizeExpression")}]`;
+		if (isSimpleType(node)) return ["[", print("typeExpression"), "; ", print("sizeExpression"), "]"];
+	},
+	[NodeType.TypeSlice](print, node) {
+		if (isSimpleType(node)) return ["[", print("typeExpression"), "]"];
+		return sg_single`[${print("typeExpression")}]`;
+	},
+	[NodeType.TypeReference](print, node) {
+		return ["&", f`${print("lt")} `, print.b("mut"), print("typeExpression")];
+	},
+	[NodeType.TypeDereferenceConst](print, node) {
+		return ["*const ", print("typeExpression")];
+	},
+	[NodeType.TypeDereferenceMut](print, node) {
+		return ["*mut ", print("typeExpression")];
+	},
+	[NodeType.TypeParenthesized](print, node) {
+		exit.never();
+		return sg_single`(${print("typeExpression")})`;
+	},
+};

frontend/src/common/prettier/plugins/rust/format/styling.ts

@@ -0,0 +1,645 @@
+import {
+	ClosureFunctionExpression,
+	ComparisonExpression,
+	ConditionExpression,
+	EnumDeclaration,
+	EnumMemberStructDeclaration,
+	ExpressionAsTypeCast,
+	ExpressionNode,
+	ExpressionStatement,
+	ExpressionWithBody,
+	LeftRightExpression,
+	LogicalExpression,
+	MacroDeclaration,
+	MacroRulesDeclaration,
+	MissingNode,
+	Node,
+	NodeType,
+	NodeWithBody,
+	NodeWithBodyOrCases,
+	OperationExpression,
+	PRCD,
+	StructDeclaration,
+	StructLiteral,
+	StructPattern,
+	TK,
+	UnionDeclaration,
+} from "jinx-rust";
+import {
+	can_have_OuterAttributes,
+	getAstPath,
+	getPrecedence,
+	hasAttributes,
+	hasBody,
+	hasCondition,
+	hasItems,
+	hasLetScrutineeCondition,
+	hasOuterAttributes,
+	hasProperties,
+	is_Attribute,
+	is_AttributeOrDocComment,
+	is_AwaitExpression,
+	is_BitwiseOperator,
+	is_CallExpression,
+	is_ClosureFunctionExpression,
+	is_ComparisonExpression,
+	is_DocCommentAttribute,
+	is_ElseBlock,
+	is_EnumMemberDeclaration,
+	is_EqualityOperator,
+	is_ExpressionAsTypeCast,
+	is_ExpressionStatement,
+	is_ExpressionWithBody,
+	is_ExpressionWithBodyOrCases,
+	is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation,
+	is_FlowControlExpression,
+	is_FlowControlMaybeValueExpression,
+	is_ForInBlockExpression,
+	is_Identifier,
+	is_IfBlockExpression,
+	is_ImplicitReturnAbleNode,
+	is_LeftRightExpression,
+	is_LetScrutinee,
+	is_Literal,
+	is_LiteralNumberLike,
+	is_LogicalExpression,
+	is_LoopBlockExpression,
+	is_MatchExpression,
+	is_MatchExpressionCase,
+	is_MemberExpression,
+	is_NodeWithBodyNoBody,
+	is_NodeWithMaybePatternNoUnionBody,
+	is_OperationExpression,
+	is_ParenthesizedNode,
+	is_PatternVariableDeclaration,
+	is_PostfixExpression,
+	is_RangeLiteral,
+	is_ReassignmentNode,
+	is_ReturnExpression,
+	is_StatementNode,
+	is_StructLiteral,
+	is_StructLiteralProperty,
+	is_StructPatternProperty,
+	is_StructPropertyDeclaration,
+	is_TypeBoundsStandaloneNode,
+	is_TypeFunctionNode,
+	is_TypeTraitBound,
+	is_UnaryExpression,
+	is_UnaryType,
+	is_UnionPattern,
+	is_WhileBlockExpression,
+	is_YieldExpression,
+	is_bitshiftOperator,
+	is_multiplicativeOperator,
+} from "jinx-rust/utils";
+import { BlockLikeMacroInvocation, is_BlockLikeMacroInvocation, is_CallExpression_or_CallLikeMacroInvocation } from "../transform";
+import { exit, last_of } from "../utils/common";
+import { CF, hasBreaklineAfter, hasComment } from "./comments";
+import { flowControlExpressionNeedsOuterParens } from "./core";
+import { Doc, hardline, softline, willBreak } from "./external";
+import {
+	assertPathAtNode,
+	getContext,
+	getGrandParentNode,
+	getNode,
+	getOptions,
+	getParentNode,
+	getPrintFn,
+	is_printing_macro,
+	pathCallAtParent,
+	pathCallParentOf,
+	stackIncludes,
+} from "./plugin";
+
+export function needsOuterSoftbreakParens(node: Node) {
+	const parent = getParentNode(node);
+
+	if (!parent) return false;
+
+	if (is_ExpressionAsTypeCast(node)) {
+		return precedenceNeedsParens(node, parent);
+	}
+
+	if (
+		is_FlowControlMaybeValueExpression(parent) && //
+		parent.expression === node &&
+		flowControlExpressionNeedsOuterParens(parent)
+	) {
+		return true;
+	}
+	if (
+		is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(node) &&
+		(false ||
+			(is_MemberExpression(parent) && parent.expression === node) ||
+			(is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(parent) && !is_ElseBlock(node, parent)))
+	) {
+		return true;
+	}
+
+	if (is_UnionPattern(node) && is_NodeWithMaybePatternNoUnionBody(parent)) {
+		return true;
+	}
+
+	if (hasComment(node)) {
+		if (is_UnaryExpression(parent)) {
+			return true;
+		}
+
+		if (hasComment(node, CF.Line)) {
+			if (is_ReturnExpression(parent) || (is_YieldExpression(parent) && parent.expression === node)) {
+				return true;
+			}
+		}
+
+		if (
+			hasComment(node, CF.Leading, (comment) => is_Attribute(comment) && !comment.inner) &&
+			!can_have_OuterAttributes(node, parent, true)
+		) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+export function needsInnerParens(node: Node) {
+	if (needsOuterSoftbreakParens(node)) {
+		return false;
+	}
+
+	const parent = getParentNode(node);
+
+	if (!parent) {
+		return false;
+	}
+
+	if (is_Identifier(node)) {
+		return false;
+	}
+
+	if (is_Literal(node)) {
+		return is_LiteralNumberLike(node) && is_MemberExpression(parent) && node === parent.expression;
+	}
+
+	if (is_CallExpression(parent) && parent.callee === node && is_MemberExpression(node)) {
+		return !getOptions().actuallyMethodNodes.has(node);
+	}
+
+	if (is_ReassignmentNode(node)) {
+		if (is_printing_macro()) {
+			return false;
+		}
+
+		if (is_ClosureFunctionExpression(parent) && node === parent.expression) {
+			return true;
+		}
+
+		if (is_ExpressionStatement(parent)) {
+			return is_StructLiteral(node.left);
+		}
+
+		if (is_ReassignmentNode(parent)) {
+			return false;
+		}
+
+		return true;
+	}
+
+	if (is_ParenthesizedNode(parent)) {
+		return false;
+	}
+
+	if (is_ExpressionStatement(parent)) {
+		return false;
+	}
+
+	if (is_RangeLiteral(node)) {
+		return (
+			is_ExpressionAsTypeCast(parent) ||
+			is_LogicalExpression(parent) ||
+			is_UnaryExpression(parent) ||
+			is_PostfixExpression(parent) ||
+			(is_MemberExpression(parent) && node === parent.expression) ||
+			(is_CallExpression(parent) && node === parent.callee) ||
+			is_OperationExpression(parent) ||
+			is_ComparisonExpression(parent)
+		);
+	}
+
+	if (is_LetScrutinee(parent) && is_LogicalExpression(node) && parent.expression === (node as any)) {
+		return true;
+	}
+
+	if (is_UnaryExpression(node)) {
+		switch (parent.nodeType) {
+			case NodeType.MemberExpression:
+			case NodeType.AwaitExpression:
+				return node === parent.expression;
+			case NodeType.CallExpression:
+				return node === parent.callee;
+			default:
+				return false;
+		}
+	}
+
+	if (is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(node)) {
+		if (is_ExpressionWithBodyOrCases(parent)) {
+			return !is_ElseBlock(node, parent);
+		}
+		if (is_LetScrutinee(parent) && parent.expression === node && is_ExpressionWithBodyOrCases(getGrandParentNode())) {
+			return true;
+		}
+		return (
+			is_ExpressionAsTypeCast(parent) ||
+			is_LogicalExpression(parent) ||
+			is_UnaryExpression(parent) ||
+			is_PostfixExpression(parent) ||
+			(is_MemberExpression(parent) && node === parent.expression) ||
+			(is_CallExpression(parent) && node === parent.callee) ||
+			is_OperationExpression(parent) ||
+			is_ComparisonExpression(parent) ||
+			is_RangeLiteral(parent)
+		);
+	}
+
+	if (is_StructLiteral(node)) {
+		if (is_ExpressionWithBodyOrCases(parent)) {
+			return true;
+		}
+
+		if (is_LetScrutinee(parent) && parent.expression === node && is_ExpressionWithBodyOrCases(getGrandParentNode())) {
+			return true;
+		}
+		if (is_UnaryExpression(parent) || is_PostfixExpression(parent) || is_MemberExpression(parent)) {
+			return parent.expression === node;
+		}
+		if (is_CallExpression(parent)) {
+			return parent.callee === node;
+		}
+	}
+
+	if (is_LogicalExpression(node) || is_OperationExpression(node) || is_ComparisonExpression(node) || is_ClosureFunctionExpression(node)) {
+		return precedenceNeedsParens(node, parent);
+	}
+
+	if (is_TypeFunctionNode(node)) {
+		const gp = getGrandParentNode();
+		if (node.returnType && is_TypeTraitBound(parent) && is_TypeBoundsStandaloneNode(gp) && last_of(gp.typeBounds) !== parent) {
+			return true;
+		}
+	}
+
+	if (is_TypeBoundsStandaloneNode(node)) {
+		return (
+			(is_UnaryType(parent) && node.typeBounds.length > 1) ||
+			is_TypeBoundsStandaloneNode(parent) ||
+			is_TypeTraitBound(parent) ||
+			(is_TypeFunctionNode(parent) && parent.returnType === node)
+		);
+	}
+
+	if (is_PatternVariableDeclaration(parent)) {
+		return is_UnionPattern(node);
+	}
+
+	return false;
+}
+
+function precedenceNeedsParens(node: LeftRightExpression | ClosureFunctionExpression | ExpressionAsTypeCast, parent: Node) {
+	if (is_UnaryExpression(parent) || is_PostfixExpression(parent)) return true;
+	if (is_ReassignmentNode(parent)) return parent.left === node;
+	if (is_MemberExpression(parent)) return parent.expression === node;
+	if (is_CallExpression(parent)) return parent.callee === node;
+	if (is_ExpressionAsTypeCast(parent)) return !is_ExpressionAsTypeCast(node);
+	if (is_LogicalExpression(parent)) return is_LogicalExpression(node) ? parent.nodeType !== node.nodeType : evalPrecedence(node, parent);
+	if (is_OperationExpression(parent) || is_ComparisonExpression(parent)) return evalPrecedence(node, parent);
+	return false;
+	function evalPrecedence(
+		child: LeftRightExpression | ClosureFunctionExpression | ExpressionAsTypeCast,
+		parent: ComparisonExpression | OperationExpression | LogicalExpression
+	) {
+		if (is_ExpressionAsTypeCast(child) || is_ClosureFunctionExpression(child)) {
+			return true;
+		}
+		function getPrec(node, bool) {
+			// if (is_EqualityOperator(node.tk)) {
+			// 	return 11.3;
+			// }
+			// if (is_LargerLesserOperator(node.tk)) {
+			// 	return 11.6;
+			// }
+			return getPrecedence(node, bool);
+		}
+
+		const childPRCD = getPrec(child, is_insideScrutinee(child));
+		const parentPRCD = getPrec(parent, is_insideScrutinee(parent));
+
+		if (parentPRCD > childPRCD) {
+			return true;
+		}
+
+		if (parentPRCD === childPRCD && parent.right === child) {
+			return true;
+		}
+
+		if (parentPRCD === childPRCD && !shouldFlatten(parent, child)) {
+			return true;
+		}
+
+		if (parentPRCD < childPRCD && child.tk === TK["%"]) {
+			return parentPRCD === PRCD["+-"];
+		}
+
+		if (is_BitwiseOperator(parent.tk) || (is_BitwiseOperator(child.tk) && is_EqualityOperator(parent.tk))) {
+			return true;
+		}
+
+		return false;
+	}
+}
+
+export function shouldFlatten(parent: ExpressionNode | ConditionExpression, node: ExpressionNode | ConditionExpression) {
+	if (getPrecedence(node, is_insideScrutinee(node)) !== getPrecedence(parent, is_insideScrutinee(parent))) return false;
+	if (is_ComparisonExpression(parent) && is_ComparisonExpression(node)) return false;
+	if (is_OperationExpression(parent) && is_OperationExpression(node)) {
+		if (
+			(node.tk === TK["%"] && is_multiplicativeOperator(parent.tk)) ||
+			(parent.tk === TK["%"] && is_multiplicativeOperator(node.tk)) ||
+			(node.tk !== parent.tk && is_multiplicativeOperator(node.tk) && is_multiplicativeOperator(parent.tk)) ||
+			(is_bitshiftOperator(node.tk) && is_bitshiftOperator(parent.tk))
+		)
+			return false;
+	}
+	return true;
+}
+
+export function needsParens(node: Node) {
+	return needsOuterSoftbreakParens(node) || needsInnerParens(node);
+}
+
+export function stmtNeedsSemi(stmt: ExpressionStatement, disregardExprType = false) {
+	return pathCallParentOf(stmt, (parent) => needsSemi(parent as any, stmt, disregardExprType));
+}
+
+const NoNode = { nodeType: 0 } as MissingNode;
+
+export function needsSemi(parent: NodeWithBody, stmt: ExpressionStatement, disregardExprType = false) {
+	const expr = disregardExprType ? NoNode : stmt.expression!;
+	const hadSemi = !disregardExprType && stmt.semi;
+
+	return (
+		!!expr &&
+		(forcePreserveSemi()
+			? true
+			: shouldNeverSemi()
+			? false
+			: shouldPreserveSemi()
+			? hadSemi || shouldAlwaysSemi() || canAutoCompleteSemi()
+			: true)
+	);
+
+	function forcePreserveSemi() {
+		/** Rust Compiler bug (preserve optional semicolon) */
+		// rust-lang/rust#70844 https://github.com/rust-lang/rust/issues/70844
+		// issue#22 https://github.com/jinxdash/prettier-plugin-rust/issues/22
+		return (
+			hadSemi &&
+			stmt === last_of(parent.body!) &&
+			((is_IfBlockExpression(expr) &&
+				hasLetScrutineeCondition(expr) &&
+				!(is_LetScrutinee(expr.condition) && is_Identifier(expr.condition.expression))) ||
+				(is_MatchExpression(expr) && !is_Identifier(expr.expression)))
+		);
+	}
+	function shouldNeverSemi() {
+		return is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(expr);
+	}
+	function shouldPreserveSemi() {
+		return stmt === last_of(parent.body!) && (is_ImplicitReturnAbleNode(parent) || is_BlockLikeMacroInvocation(parent));
+	}
+	function shouldAlwaysSemi() {
+		return is_FlowControlExpression(expr) || is_ReassignmentNode(expr);
+	}
+	function canAutoCompleteSemi() {
+		return withPathAt(parent, function checkParent(child: NodeWithBodyOrCases): boolean {
+			return pathCallParentOf(child, (parent) => {
+				if (is_IfBlockExpression(parent) && parent.else === child) {
+					// if ... { ... } else if { ... } ...
+					// ^ ------------------------------- parent
+					//                     ^ ----------- child
+					return checkParent(parent);
+				}
+				if (is_ExpressionStatement(parent)) {
+					// { .... { ... } ... }
+					// ^ -----------------^ grandparent
+					//        ^ --- ^       ExpressionStatement<child>
+					if (hasOuterAttributes(parent)) return false;
+					return stmtNeedsSemi(parent, true);
+				}
+				if (is_MatchExpressionCase(parent) && parent.expression === child) {
+					return pathCallParentOf(parent, checkParent);
+				}
+				return false;
+			});
+		});
+	}
+}
+
+export function canInlineBlockBody(node: NodeWithBodyOrCases | BlockLikeMacroInvocation): boolean {
+	if (!is_ExpressionWithBody(node)) {
+		return false;
+	}
+	const body = node.body;
+
+	if (body.length === 0) {
+		return canInlineInlineable(node);
+	}
+
+	if (body.length === 1) {
+		const stmt = body[0];
+		if (is_AttributeOrDocComment(stmt)) {
+			return true;
+		}
+		if (is_ExpressionStatement(stmt) && !needsSemi(node, stmt)) {
+			/**
+			 * parent ( ExpressionStatement | StructLiteralProperty | LetVariableDeclaration | ... )
+			 *   ...
+			 *   node {
+			 *     expr
+			 *   }
+			 *   ...
+			 *
+			 *
+			 * Q: Can you inline "node { expr }" ?
+			 */
+			const expr = stmt.expression!;
+
+			if (
+				is_FlowControlExpression(expr) || //
+				is_ClosureFunctionExpression(expr) ||
+				is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(expr)
+			) {
+				return false;
+			}
+
+			return canInlineInlineable(node);
+		}
+	}
+	return false;
+}
+
+// function q(node: ExpressionWithBody) {
+// 	pathCallTopMostIfBlockExpression(node, (node) => {});
+// }
+
+function canInlineInlineable(node: ExpressionWithBody) {
+	if (is_ForInBlockExpression(node) || is_LoopBlockExpression(node)) {
+		return false;
+	}
+	if (is_WhileBlockExpression(node)) {
+		return true;
+	}
+
+	const parent = getParentNode(node)!;
+
+	if (
+		is_ExpressionStatement(parent) &&
+		(!is_ImplicitReturnAbleNode(node) || pathCallAtParent(parent, (parent) => stmtNeedsSemi(parent, true)))
+	) {
+		return false;
+	}
+
+	if (is_ElseBlock(node, parent)) {
+		return pathCallAtParent(parent, canInlineBlockBody);
+	}
+	// if (is_CaseBlock(node, parent)) {
+	// 	return false;
+	// }
+	if (is_IfBlockExpression(node)) {
+		if (
+			!node.else ||
+			// hasLetScrutineeCondition(node) ||
+			is_ExpressionWithBodyOrCases_or_BlockLikeMacroInvocation(node.condition) ||
+			willBreak(getPrintFn(node)("condition"))
+		) {
+			return false;
+		}
+
+		const grandparent = getGrandParentNode();
+		if (is_ExpressionStatement(parent) && hasBody(grandparent) && grandparent.body.length > 1) {
+			return false;
+		}
+	}
+	return true;
+	return (
+		is_CallExpression_or_CallLikeMacroInvocation(parent) ||
+		hasItems(parent) ||
+		hasProperties(parent) ||
+		is_ClosureFunctionExpression(parent) ||
+		is_MemberExpression(parent) ||
+		is_AwaitExpression(parent) ||
+		is_LeftRightExpression(parent)
+	);
+}
+
+type NodeWithBracketContent =
+	| NodeWithBodyOrCases
+	| BlockLikeMacroInvocation
+	| EnumDeclaration
+	| StructDeclaration
+	| StructLiteral
+	| StructPattern
+	| EnumMemberStructDeclaration
+	| UnionDeclaration
+	| MacroRulesDeclaration
+	| MacroDeclaration;
+
+export function emptyContent(node: NodeWithBracketContent): Doc {
+	switch (node.nodeType) {
+		case NodeType.Program:
+		case NodeType.MacroRulesDeclaration:
+		case NodeType.MacroDeclaration:
+		case NodeType.ExternBlockDeclaration:
+		case NodeType.ModuleDeclaration:
+		case NodeType.TraitDeclaration:
+		case NodeType.StructDeclaration:
+		case NodeType.MacroInvocation:
+		case NodeType.FunctionDeclaration:
+		case NodeType.ImplDeclaration:
+		case NodeType.UnionDeclaration:
+		case NodeType.EnumDeclaration:
+		case NodeType.EnumMemberStructDeclaration:
+		case NodeType.StructLiteral:
+		case NodeType.StructPattern:
+			// case NodeType.MatchExpression:
+			return "";
+		case NodeType.BlockExpression:
+		case NodeType.WhileBlockExpression:
+		case NodeType.ForInBlockExpression:
+		case NodeType.TryBlockExpression:
+		case NodeType.IfBlockExpression:
+			return canInlineInlineable(node)
+				? is_IfBlockExpression(node) || is_ElseBlock(node, getParentNode()!)
+					? softline
+					: ""
+				: hardline;
+		case NodeType.LoopBlockExpression:
+		case NodeType.MatchExpression:
+			return hardline;
+		default:
+			if (is_NodeWithBodyNoBody(node)) {
+				return "";
+			}
+			__DEV__: exit.never(node);
+			return "";
+	}
+}
+
+export function is_insideScrutinee(target: Node) {
+	return withPathAt(target, (n) => stackIncludes("condition") && r(n));
+	function r(CHILD: Node) {
+		switch (CHILD.nodeType) {
+			case NodeType.OrExpression:
+			case NodeType.AndExpression:
+				return pathCallParentOf(CHILD, (PARENT) =>
+					hasCondition(PARENT) && PARENT.condition === CHILD //
+						? hasLetScrutineeCondition(PARENT)
+						: r(PARENT)
+				);
+			case NodeType.LetScrutinee:
+				return true;
+			default:
+				return false;
+		}
+	}
+}
+
+function withPathAt<T extends Node, R>(target: T, callback: (target: T) => R): R {
+	if (target === getNode()) return callback(target);
+	if (target === getParentNode()) return pathCallAtParent(target, () => callback(target));
+	if (stackIncludes(target)) return pathCallAtParent(getParentNode()!, () => withPathAt(target, callback));
+	return getContext().path.call(() => {
+		__DEV__: assertPathAtNode("withPathAt", target);
+		return callback(target); // @ts-ignore
+	}, ...getAstPath(getNode(), target));
+}
+export function shouldPrintOuterAttributesAbove(node: Node) {
+	return (
+		is_StatementNode(node) ||
+		is_MatchExpressionCase(node) ||
+		(hasAttributes(node) &&
+			node.attributes.some(
+				canInlineOuterAttribute(node)
+					? (attr) => is_DocCommentAttribute(attr) || hasBreaklineAfter(attr) //
+					: is_DocCommentAttribute
+			))
+	);
+	function canInlineOuterAttribute(node: Node) {
+		return (
+			is_EnumMemberDeclaration(node) ||
+			is_StructPropertyDeclaration(node) ||
+			is_StructLiteralProperty(node) ||
+			is_StructPatternProperty(node)
+		);
+	}
+}

frontend/src/common/prettier/plugins/rust/index.ts

@@ -0,0 +1,8 @@
+import { plugin } from "./format/plugin";
+
+export default plugin;
+export const languages = plugin.languages;
+export const parsers = plugin.parsers;
+export const printers = plugin.printers;
+export const options = plugin.options;
+export const defaultOptions = plugin.defaultOptions;

frontend/src/common/prettier/plugins/rust/transform/custom/attribute.ts

@@ -0,0 +1,116 @@
+import {
+	AttrSegment,
+	CallExpression,
+	DelimKind,
+	ExpressionPath,
+	Identifier,
+	Literal,
+	LocArray,
+	MacroInvocation,
+	NodeType,
+	PunctuationToken,
+	ReassignmentExpression,
+	TK,
+	rs,
+} from "jinx-rust";
+import { isTK, start } from "jinx-rust/utils";
+import { assert, exit } from "../../utils/common";
+import { isIdent } from "./utils";
+
+type SimpleAttrItem =
+	| Identifier //
+	| Literal
+	| ExpressionPath
+	| CallExpression
+	| ReassignmentExpression
+	| MacroInvocation;
+
+export function transform_simpleAttrSyntax(segments: MacroInvocation["segments"]) {
+	assert(segments.length !== 0, segments.loc.url());
+	return transform_segments(segments, false);
+
+	function transform_segments<N extends boolean>(
+		seq: LocArray<AttrSegment>,
+		nestedCall: N
+	): N extends true ? LocArray<SimpleAttrItem, "()"> : SimpleAttrItem {
+		let i = 0;
+
+		if (nestedCall) {
+			const args = rs.createLocArray<SimpleAttrItem, any>(DelimKind["()"], seq.loc.clone());
+			while (i !== seq.length) {
+				args.push(read(true));
+				if (i === seq.length) break;
+				assert(isTK(seq[i++], TK[","]));
+			}
+			return args as any;
+		} else {
+			const res = read(true);
+			assert(i === seq.length, res.loc.url());
+			return res as any;
+		}
+
+		function read(allowEq: boolean): SimpleAttrItem {
+			let lhs: Identifier | ExpressionPath;
+
+			switch (seq[i].nodeType) {
+				case NodeType.Literal:
+					return seq[i++] as Literal;
+				case NodeType.Identifier:
+					lhs = seq[i++] as Identifier;
+					break;
+				case NodeType.PunctuationToken:
+					assert((seq[i] as PunctuationToken).tk === TK["::"], seq[i].loc.url());
+					lhs = eatPathSegment(undefined);
+					break;
+				default:
+					exit.never();
+			}
+
+			while (true) {
+				if (i === seq.length) return lhs;
+				const seg = seq[i];
+				switch (seg.nodeType) {
+					case NodeType.PunctuationToken:
+						switch (seg.tk) {
+							case TK[","]:
+								assert(nestedCall);
+								return lhs;
+							case TK["="]: {
+								assert(allowEq);
+								const right = (i++, read(false));
+								return rs.mockNode(NodeType.ReassignmentExpression, right.loc.cloneFrom(start(lhs)), {
+									tk: TK["="],
+									kind: DelimKind["="],
+									left: lhs,
+									right,
+								});
+							}
+							case TK["::"]:
+								lhs = eatPathSegment(lhs);
+								continue;
+							default:
+								exit.never();
+						}
+					case NodeType.DelimGroup:
+						assert(seg.segments.dk === DelimKind["()"]);
+						return rs.mockNode(NodeType.CallExpression, seq[i++].loc.cloneFrom(start(lhs)), {
+							callee: lhs,
+							typeArguments: undefined,
+							method: undefined,
+							arguments: transform_segments(seg.segments, true),
+						});
+					default:
+						exit.never();
+				}
+			}
+		}
+
+		function eatPathSegment(left: undefined | Identifier | ExpressionPath) {
+			const segment = seq[i + 1];
+			assert(isIdent(segment));
+			const res = rs.mockNode(NodeType.ExpressionPath, segment.loc.cloneFrom(start(left ?? seq[i])), { namespace: left, segment });
+			i += 2;
+			return res;
+		}
+	}
+}

frontend/src/common/prettier/plugins/rust/transform/custom/cfg_if.ts

@@ -0,0 +1,92 @@
+import {
+	DelimGroup,
+	DelimKind,
+	IfBlockExpression,
+	LocArray,
+	MacroInvocation,
+	NodeType,
+	NodeWithBody,
+	rs,
+	Segment,
+	Snippet,
+	StatementNode,
+	TK,
+} from "jinx-rust";
+import { insertNodes, start, transferAttributes } from "jinx-rust/utils";
+import { assert, iLast } from "../../utils/common";
+import { isGroup, isIdent, isToken } from "./utils";
+
+export function transform_macro_cfg_if(segments: MacroInvocation["segments"]) {
+	const danglingAttributes: Snippet["danglingAttributes"] = [];
+	const comments: Snippet["comments"] = [];
+
+	const block = (function create_if_block(i: number): IfBlockExpression | undefined {
+		if (i >= segments.length) return undefined;
+
+		const _if = segments[i];
+		const pound = segments[i + 1];
+		const grp = segments[i + 2];
+		const block = segments[i + 3];
+		const _else = segments[i + 4];
+
+		assert(
+			isIdent(_if, "if") &&
+				isToken(pound, TK["#"]) &&
+				isGroup(grp, DelimKind["[]"]) &&
+				isGroup(block, DelimKind["{}"]) &&
+				(!_else || isIdent(_else, "else"))
+		);
+
+		return create_block(block, (body) =>
+			rs.mockNode(NodeType.IfBlockExpression, block.loc.cloneFrom(start(_if)), {
+				label: undefined,
+				condition: rs.mockNode(NodeType.Attribute, grp.loc.cloneFrom(start(pound)), {
+					segments: grp.segments,
+					value: grp.segments.loc.sliceText(),
+					line: false,
+					inner: false,
+				}) as any,
+				body: body,
+				else: (_else && iLast(i + 5, segments)
+					? function create_else_block(i: number) {
+							const block = segments[i];
+							assert(isGroup(block, DelimKind["{}"]));
+							return create_block(block, (body) =>
+								rs.mockNode(NodeType.BlockExpression, body.loc.clone(), {
+									label: undefined,
+									body,
+								})
+							);
+					  }
+					: create_if_block)(i + 5),
+			})
+		);
+	})(0);
+
+	const ast = rs.createLocArray(
+		segments.dk,
+		segments.loc,
+		block && [
+			rs.mockNode(NodeType.ExpressionStatement, block.loc.clone(), {
+				expression: block,
+				semi: false,
+			}),
+		]
+	);
+
+	return rs.mockNode(NodeType.Snippet, segments.loc.clone(), { ast, danglingAttributes, comments });
+
+	function create_block<R extends NodeWithBody>(
+		group: DelimGroup<Segment> & { segments: { dk: 3 } },
+		fn: (statements: LocArray<StatementNode, "{}">) => R
+	): R {
+		const snippet = rs.toBlockBody(group.segments);
+
+		insertNodes(danglingAttributes, snippet.danglingAttributes);
+		insertNodes(comments, snippet.comments);
+
+		const block = fn(snippet.ast);
+		transferAttributes(snippet, block);
+		return block;
+	}
+}

frontend/src/common/prettier/plugins/rust/transform/custom/utils.ts

@@ -0,0 +1,16 @@
+import { DelimGroup, DelimKind, Identifier, LocArray, PunctuationToken, Segment, TK } from "jinx-rust";
+import { isTK, is_DelimGroup, is_Identifier, is_PunctuationToken } from "jinx-rust/utils";
+
+export function isIdent(node: Segment | undefined, name?: string): node is Identifier {
+	return !!node && is_Identifier(node) && (null == name || node.name === name);
+}
+export function isToken(node: Segment | undefined, tk?: TK): node is PunctuationToken {
+	return !!node && (null == tk ? is_PunctuationToken(node) : isTK(node, tk));
+}
+export function isGroup<D extends DelimKind>(node: Segment | undefined, dk?: D): node is DelimGroup & { segments: LocArray<any, D> } {
+	return !!node && is_DelimGroup(node) && (null == dk || node.segments.dk === dk);
+}
+
+export function isCallLike(tk_1: Segment | undefined, tk_2: Segment | undefined): boolean {
+	return !!tk_1 && !!tk_2 && is_Identifier(tk_1) && is_DelimGroup(tk_2) && tk_2.segments.dk === DelimKind["()"];
+}

frontend/src/common/prettier/plugins/rust/transform/index.ts

@@ -0,0 +1,568 @@
+import {
+	Attribute,
+	AttributeOrDocComment,
+	CallExpression,
+	DelimKind,
+	ExpressionNode,
+	LocArray,
+	MacroInvocation,
+	MemberExpression,
+	Node,
+	NodeType,
+	NodeWithBodyNoBody,
+	NodeWithTypeBounds,
+	NTMap,
+	ProgramLike,
+	rs,
+	Snippet,
+	StatementNode,
+	StructLiteral,
+	StructPattern,
+	TK,
+	TypeBound,
+	TypeBoundsStandaloneNode,
+	TypeDynBounds,
+	TypeTraitBound,
+} from "jinx-rust";
+import {
+	countActualNodeChildren,
+	deleteAttributes,
+	each_childNode,
+	end,
+	getActualNodeChildren,
+	getBodyOrCases,
+	getMacroName,
+	getNodeChildren,
+	hasAttributes,
+	hasMethod,
+	hasTypeBounds,
+	includesTK,
+	insertNode,
+	insertNodes,
+	is_AttributeOrDocComment,
+	is_BareTypeTraitBound,
+	is_BlockExpression,
+	is_CallExpression,
+	is_ClosureFunctionExpression,
+	is_DocCommentAttribute,
+	is_ExpressionStatement,
+	is_ExpressionWithBodyOrCases,
+	is_FlowControlExpression,
+	is_IfBlockExpression,
+	is_MacroInvocation,
+	is_Node,
+	is_NodeWithBodyNoBody,
+	is_NodeWithBodyOrCases,
+	is_Program,
+	is_PunctuationToken,
+	is_ReassignmentNode,
+	is_Snippet,
+	is_TypeBoundsStandaloneNode,
+	is_TypeDynBounds,
+	is_TypeImplBounds,
+	is_TypeTraitBound,
+	ownStart,
+	reassignNodeProperty,
+	start,
+	transferAttributes,
+	unsafe_set_nodeType,
+} from "jinx-rust/utils";
+import { isPrettierIgnoreAttribute, setPrettierIgnoreTarget } from "../format/comments";
+import { is_StructSpread } from "../format/core";
+import { CustomOptions } from "../format/external";
+import { getOptions } from "../format/plugin";
+import {
+	Array_replace,
+	Array_splice,
+	assert,
+	binarySearchIn,
+	each,
+	exit,
+	iLast,
+	last_of,
+	Map_get,
+	spliceAll,
+	try_eval,
+} from "../utils/common";
+import { transform_simpleAttrSyntax } from "./custom/attribute";
+import { transform_macro_cfg_if } from "./custom/cfg_if";
+
+export interface ExpressionLikeAttribute extends Attribute {
+	segments: LocArray<any, "[]">;
+}
+
+export interface CallLikeMacroInvocation extends MacroInvocation {
+	segments: LocArray<any, any>;
+	callee: MacroInvocation["callee"];
+	method: undefined;
+	typeArguments: undefined;
+	arguments: LocArray<ExpressionNode, "()" | "[]" | "{}">;
+}
+
+export interface BlockLikeMacroInvocation extends MacroInvocation {
+	segments: LocArray<any, any>;
+	body: LocArray<StatementNode, "()" | "[]" | "{}">;
+	attributes?: AttributeOrDocComment[];
+}
+
+export function is_CallLikeMacroInvocation(node: Node): node is CallLikeMacroInvocation {
+	return is_MacroInvocation(node) && "arguments" in node;
+}
+
+export function is_BlockLikeMacroInvocation(node: Node): node is BlockLikeMacroInvocation {
+	return is_MacroInvocation(node) && "body" in node;
+}
+
+export function is_CallExpression_or_CallLikeMacroInvocation(node: any): node is CallExpression | CallLikeMacroInvocation {
+	return is_CallExpression(node) || is_CallLikeMacroInvocation(node);
+}
+
+const IGNORED_MACROS = new Set([
+	// std
+	// crates
+	"quote",
+]);
+
+const HARDCODED_MACRO_DELIMS = new Map<string, MacroInvocation["segments"]["dk"]>();
+each(
+	{
+		[DelimKind["{}"]]: [
+			// std
+			"thread_local",
+			// crates
+			"cfg_if",
+		],
+		[DelimKind["()"]]: [
+			// std
+			"assert_eq",
+			"assert_ne",
+			"assert",
+			"cfg",
+			"concat_bytes",
+			"concat_idents",
+			"concat",
+			"debug_assert_eq",
+			"debug_assert_ne",
+			"debug_assert",
+			"eprint",
+			"eprintln",
+			"format_args_nl",
+			"format_args",
+			"format",
+			"matches",
+			"panic",
+			"print",
+			"println",
+			"try",
+			"unimplemented",
+			"unreachable",
+			"write",
+			"writeln",
+			// crates
+		],
+		[DelimKind["[]"]]: [
+			// std
+			"vec",
+			// crates
+		],
+	},
+	(names, tk) =>
+		each(names, (name) => {
+			HARDCODED_MACRO_DELIMS.set(name, +tk as MacroInvocation["segments"]["dk"]);
+		})
+);
+
+let _COMMENTS: CustomOptions["comments"] = undefined!;
+let _DANGLING_ATTRIBUTES: CustomOptions["danglingAttributes"] = undefined!;
+
+export function transform_ast(options: CustomOptions) {
+	try {
+		_COMMENTS = options.comments;
+		_DANGLING_ATTRIBUTES = options.danglingAttributes;
+		transformNode(options.rsParsedFile);
+	} finally {
+		_depth = 0;
+		_COMMENTS = undefined!;
+		_DANGLING_ATTRIBUTES = undefined!;
+	}
+}
+
+let _depth = 0;
+const isReadingSnippet = () => 0 !== _depth;
+
+function maybe_transform_node<T extends Node, S extends Snippet>(
+	node: T,
+	read_snippet: () => S,
+	fn: (node: T, snippet: S) => void
+): T | undefined {
+	const snippet = try_eval(read_snippet);
+	if (snippet) {
+		++_depth;
+		transformNode(snippet);
+		--_depth;
+		fn(node, snippet);
+		transformed.add(node);
+		return node;
+	}
+}
+const transformed = new WeakSet<Node>();
+export function isTransformed(node: Node) {
+	return transformed.has(node);
+}
+
+const transform: { [K in NodeType]?: (node: NTMap[K]) => void } = {
+	[NodeType.Attribute](node) {
+		try_eval(() => {
+			node.segments = rs.createLocArray(node.segments.dk, node.segments.loc.clone(), [
+				transform_simpleAttrSyntax(node.segments),
+			]) as any;
+			transformed.add(node);
+		});
+	},
+	[NodeType.MacroInlineRuleDeclaration](node) {
+		node.match.dk = DelimKind["()"];
+		node.transform.dk = DelimKind["{}"];
+	},
+	[NodeType.MacroInvocation](node) {
+		const name = getMacroName(node);
+
+		if (
+			IGNORED_MACROS.has(name) ||
+			node.segments.length === 0 ||
+			(node.segments.length === 1 && is_PunctuationToken(node.segments[0]))
+		) {
+			return;
+		}
+
+		const tk = transformMacroDelim(name, node);
+
+		if (name === "matches") {
+			//
+		}
+
+		if (name === "if_chain") {
+			//
+		}
+
+		if (name === "cfg_if") {
+			transformBlockLike(() => transform_macro_cfg_if(node.segments) as any);
+		} else if (tk === DelimKind["{}"]) {
+			transformBlockLike(); /* || (includesTK(node, TK[","]) && transformCallLike()); */
+		} else {
+			transformCallLike(); /* || (includesTK(node, TK[";"]) && transformBlockLike()); */
+		}
+
+		function transformBlockLike(transform = () => rs.toBlockBody(node.segments)) {
+			return maybe_transform_node(node as BlockLikeMacroInvocation, transform, (node, snippet) => {
+				const _body = snippet.ast;
+				_body.dk = tk;
+
+				node.body = _body;
+				node.segments = _body;
+				transferAttributes(snippet, node);
+			});
+		}
+
+		function transformCallLike() {
+			return maybe_transform_node(
+				node as CallLikeMacroInvocation,
+				() => rs.toCallExpressionArguments(node.segments),
+				(node, snippet) => {
+					const _arguments = snippet.ast;
+					_arguments.dk = tk;
+
+					node.method = undefined;
+					node.typeArguments = undefined;
+					node.arguments = _arguments;
+					node.segments = _arguments;
+				}
+			);
+		}
+	},
+	[NodeType.CallExpression](node) {
+		if (hasMethod(node)) {
+			node.callee = rs.mockNode(NodeType.MemberExpression, node.method.loc.cloneFrom(start(node.callee)), {
+				expression: node.callee,
+				property: node.method,
+				computed: false,
+			});
+			node.method = undefined!;
+			getOptions().actuallyMethodNodes.add(node.callee as MemberExpression);
+		}
+	},
+
+	[NodeType.AutoTraitDeclaration](node) {
+		mockBodyNoBody(node);
+	},
+	[NodeType.NegativeImplDeclaration](node) {
+		mockBodyNoBody(node);
+	},
+
+	[NodeType.StructLiteral](node) {
+		moveSpreadsToEnd(node);
+	},
+	[NodeType.StructPattern](node) {
+		moveSpreadsToEnd(node);
+	},
+};
+
+function moveSpreadsToEnd(node: StructLiteral | StructPattern) {
+	const props = node.properties;
+	if (props.some((p, i, a) => is_StructSpread(p) && !iLast(i, a))) {
+		const spreads: any[] = [];
+		for (let i = 0; i < props.length; i++) {
+			const prop = props[i];
+			if (is_StructSpread(prop)) {
+				Array_splice(props, prop, i--);
+				spreads.push(prop);
+			}
+		}
+		props.push(...spreads);
+	}
+}
+
+function mockBodyNoBody(node: NodeWithBodyNoBody) {
+	// @ts-expect-error
+	node.body = rs.createLocArray(last_of(rs.toTokens(node).ast).loc.clone(), DelimKind["{}"]);
+}
+
+function transformMacroDelim(name: string, node: MacroInvocation): 1 | 2 | 3 {
+	if (HARDCODED_MACRO_DELIMS.has(name)) {
+		return HARDCODED_MACRO_DELIMS.get(name)!;
+	}
+	if (node.segments.dk === DelimKind["{}"] && includesTK(node, TK[","])) {
+		return DelimKind["()"];
+	}
+	if (node.segments.dk === DelimKind["()"] && includesTK(node, TK[";"])) {
+		return DelimKind["{}"];
+	}
+	return node.segments.dk;
+}
+
+// export function createTransformed<S extends Node>(create: () => S): S {
+// 	return transformNode(create());
+// }
+
+const seen = new WeakSet<Node>();
+function transformNode<T extends Node>(node: T, parent?: Node, key?: string, index?: any): T {
+	if (!seen.has(node)) {
+		seen.add(node);
+		if (is_Snippet(node) || is_Program(node)) {
+			registerPogramLike(node);
+		}
+
+		each_childNode(node, transformNode);
+
+		insert_blocks(node, parent, key, index);
+
+		transform[node.nodeType]?.(node as any);
+
+		flatten_typeBounds(node);
+
+		transform_nodeAttributes(node);
+	}
+	return node;
+}
+
+function insert_blocks(node: Node, parent?: Node, key?: string, index?: any) {
+	if (parent && key) {
+		if (
+			!is_ExpressionStatement(parent) &&
+			(false ||
+				// "1 + break" -> "1 + { break; }"
+				is_FlowControlExpression(node) ||
+				// "1 + a = b" -> "1 + { a = b; }"
+				(!isReadingSnippet() && is_ReassignmentNode(node) && !(is_ReassignmentNode(parent) && parent.left === node)))
+		) {
+			reassignNodeProperty(blockify(node), parent, key, index);
+		} else if (
+			is_ClosureFunctionExpression(node) &&
+			(false ||
+				// "|| -> T x" -> "|| -> T { x }"
+				(!!node.returnType && !is_BlockExpression(node.expression)) ||
+				// "|| match x {}" -> "|| { match x {} }"
+				(is_ExpressionWithBodyOrCases(node.expression) &&
+					!is_BlockExpression(node.expression) &&
+					!is_IfBlockExpression(node.expression)))
+		) {
+			node.expression = blockify(node.expression);
+		}
+	}
+	function blockify(node: ExpressionNode) {
+		const block = rs.mockNode(NodeType.BlockExpression, node.loc.clone(), {
+			label: undefined,
+			body: rs.createLocArray(DelimKind["{}"], node.loc.clone(), [
+				rs.mockNode(NodeType.ExpressionStatement, node.loc.clone(), { semi: false, expression: node }),
+			]),
+		});
+		transferAttributes(node, block);
+		return block;
+	}
+}
+
+function flatten_typeBounds(topNode: Node) {
+	if (hasTypeBounds(topNode)) {
+		const nestedBounds: TypeTraitBound[] = topNode.typeBounds.filter(isBoundWithNestedBounds);
+		const [first, ...subsequent] = nestedBounds;
+
+		const flatten = (bound: TypeTraitBound) =>
+			Array_replace(topNode.typeBounds, bound, ...(bound.typeExpression as unknown as TypeDynBounds).typeBounds);
+
+		if (nestedBounds.every(isBareBoundWithNestedBoundsNoPrefix)) {
+			// A + (B + C)
+			// -> A + B + C
+			each(nestedBounds, flatten);
+		} else if (
+			!hasDefinedPrefix(topNode) &&
+			first === topNode.typeBounds[0] &&
+			!isBareBoundWithNestedBoundsNoPrefix(first) &&
+			subsequent.every(isBareBoundWithNestedBoundsNoPrefix)
+		) {
+			if (is_TypeDynBounds(topNode)) {
+				if (is_TypeImplBounds(first.typeExpression)) {
+					// (impl A) + B
+					// -> impl A + B
+					unsafe_set_nodeType(topNode, NodeType.TypeImplBounds);
+				} else {
+					// (dyn A) + B
+					// -> dyn A + B
+					topNode.dyn = true;
+				}
+				each(nestedBounds, flatten);
+			} else {
+				each(subsequent, flatten);
+				(first.typeExpression as unknown as TypeDynBounds).typeBounds.push(...topNode.typeBounds.slice(1));
+				topNode.typeBounds.length = 1;
+			}
+		}
+	}
+
+	function isBoundWithNestedBounds(bound: TypeBound): bound is TypeTraitBound & { typeExpression: TypeBoundsStandaloneNode } {
+		return is_TypeTraitBound(bound) && is_TypeBoundsStandaloneNode(bound.typeExpression);
+	}
+	function isBareBoundWithNestedBounds(bound: TypeBound): bound is TypeTraitBound & { typeExpression: TypeBoundsStandaloneNode } {
+		return isBoundWithNestedBounds(bound) && is_BareTypeTraitBound(bound);
+	}
+	function isBareBoundWithNestedBoundsNoPrefix(bound: TypeBound): bound is TypeTraitBound & { typeExpression: TypeDynBounds } {
+		return isBareBoundWithNestedBounds(bound) && !hasDefinedPrefix(bound.typeExpression);
+	}
+	function hasDefinedPrefix(node: NodeWithTypeBounds) {
+		return (is_TypeDynBounds(node) && node.dyn) || is_TypeImplBounds(node);
+	}
+}
+
+function transform_nodeAttributes(node: Node) {
+	/**
+	 * # Inside Token trees:
+	 *
+	 *  1. DocCommentAttribute 	--is parsed as--> 	Comment
+	 *  2. Attribute 			--is parsed as--> 	Token<'#'>, DelimGroup<'[]'>
+	 *
+	 * # Transforming tokens into a Snippet:
+	 *
+	 *  1. DocCommentAttribute <--replace from-- Comment
+	 *    a) Remove node with same loc from comments
+	 *    b) Merge Snippet.danglingAttributes with Program.danglingAttributes
+	 *
+	 *  2. Attribute (no action needed)
+	 *
+	 */
+	if (hasAttributes(node)) {
+		const attrs = node.attributes;
+		for (let i = 0; i < attrs.length; i++) {
+			const attr = attrs[i];
+			if (isReadingSnippet() && is_DocCommentAttribute(attr)) {
+				const index = binarySearchIn(_COMMENTS, start(attr), start);
+				__DEV__: assert(index !== -1), assert(end(_COMMENTS[index]) === end(attr));
+				_COMMENTS.splice(index, 1);
+			}
+			if (attr.inner) {
+				if (isPrettierIgnoreAttribute(attr)) {
+					setPrettierIgnoreTarget(is_Program(node) ? node.loc.src : node, attr);
+				}
+				// @ts-expect-error Inserting Attribute into StatementNode[]
+				insertNode(is_Snippet(node) ? node.ast : getBodyOrCases(node)!, attr);
+				Array_splice(attrs, attr, i--);
+			}
+		}
+		if (attrs.length === 0) {
+			deleteAttributes(node);
+		}
+	}
+}
+
+function registerPogramLike(program: Extract<Node, ProgramLike>) {
+	const comments = spliceAll(program.comments);
+	const danglingAttributes = spliceAll(program.danglingAttributes);
+	for (let i = 0; i < danglingAttributes.length; i++) {
+		const attr = danglingAttributes[i];
+		// if (isReadingSnippet() && is_DocCommentAttribute(attr)) {
+		// }
+		if (is_DocCommentAttribute(attr)) {
+			if (isReadingSnippet()) {
+				const index = binarySearchIn(_COMMENTS, start(attr), start);
+				__DEV__: assert(index !== -1), assert(end(_COMMENTS[index]) === end(attr));
+				_COMMENTS.splice(index, 1);
+			}
+		} else {
+			transformNode(danglingAttributes[i], program, "danglingAttributes", i);
+		}
+	}
+	if (!isReadingSnippet()) insertNodes(_COMMENTS, comments);
+	insertNodes(_DANGLING_ATTRIBUTES, danglingAttributes);
+}
+
+const CommentChildNodes = new WeakMap<Node, Node[]>();
+
+export function getCommentChildNodes(n: any): Node[] {
+	const children = Map_get(CommentChildNodes, n, getTransformedNodeChildren);
+	/**
+	 * parent {
+	 *  #[attr]
+	 * 	#![attr] <-------- list misplaced inner attrs as part of "#[attr] child {}"
+	 * 	child {}
+	 * }
+	 */
+	if (is_NodeWithBodyOrCases(n) || is_BlockLikeMacroInvocation(n)) {
+		for (let i = 0; i < children.length; i++) {
+			const attr = children[i];
+			if (is_AttributeOrDocComment(attr)) {
+				const target = children.find((n) => start(n) <= start(attr) && ownStart(n) >= end(attr));
+				if (target) {
+					children.splice(i--, 1);
+					insertNode(Map_get(CommentChildNodes, target, getTransformedNodeChildren), attr);
+				}
+			}
+		}
+	}
+	return children;
+
+	function getTransformedNodeChildren(node: Node) {
+		if (is_Program(node)) node.comments ??= []; // prettier core deletes this property
+		const children = getNodeChildren(node);
+
+		if (is_NodeWithBodyNoBody(node)) {
+			insertNodes(children, (node as any).body);
+		}
+
+		__DEV__: {
+			const actual_count = countActualNodeChildren(node);
+			if (
+				children.length !== actual_count &&
+				!(is_MacroInvocation(node) && actual_count - node.segments.length === children.length)
+			) {
+				const actual = getActualNodeChildren(node);
+				const missing = actual.filter((n) => !children.includes(n));
+				const unknown = children.filter((n) => !actual.includes(n));
+				const duplicates_in_object = actual.filter((n, i, a) => i !== 0 && n === a[i - 1]);
+				const duplicates_in_childNodes = children.filter((n, i, a) => i !== 0 && n === a[i - 1]);
+				const ctx = { missing, unknown, duplicates_in_object, duplicates_in_childNodes };
+				for (let key in ctx) if (ctx[key].length === 0) delete ctx[key];
+				exit(`${node.type} was transformed but did not patch its childNodes list`, ctx, node.loc.url(), node);
+			}
+			for (const child of children)
+				if (!is_Node(child)) exit(`${node.type}'s childNodes includes unexpected entries`, { node, child });
+		}
+		return children;
+	}
+}

frontend/src/common/prettier/plugins/rust/utils/common.ts

@@ -0,0 +1,246 @@
+import { createCustomError } from "./debug";
+
+declare global {
+	interface ImportMeta {
+		url: string;
+	}
+}
+
+export function Narrow<T extends R, R = unknown>(value: R): asserts value is T {}
+export function AssertTypesEq<A extends B, B>(...args: [B] extends [A] ? [] : [RIGHT_TYPES_NOT_ASSIGNABLE_TO_LEFT: Exclude<B, A>]) {}
+
+// prettier-ignore
+type indexof<A> = A extends readonly any[] ? A extends 0 ? any : keyof A & number : A extends Set<unknown> ? never : A extends Map<infer U, unknown> ? U 
+	: A extends Iterable<unknown> ? never : A extends object ? keyof A & (number | string) : never;
+// prettier-ignore
+type valueof<A> = A extends ReadonlyArray<infer U> ? A extends 0 ? any : U : A extends Set<infer U> ? U : A extends Map<unknown, infer U> ? U 
+	: A extends Iterable<infer U> ? U : A extends object ? A[keyof A & (number | string)] : never;
+// prettier-ignore
+type vObject<V extends unknown = unknown, K extends unknown = unknown> = | object | readonly V[] | { [key: string]: V } | anySet<V> | anyMap<K, V>;
+export type itfn<A, R> = (value: valueof<A>, key: indexof<A>) => R;
+type anySet<V extends unknown = unknown> = Set<V>;
+type anyMap<K extends unknown = unknown, V extends unknown = unknown> = Map<K, V>;
+type anyfunction<A extends any[] = unknown[], R = unknown> = (...args: A) => R;
+type objlike = object | anyfunction;
+type anymap<K extends unknown = unknown, V extends unknown = unknown> = K extends objlike ? Map<K, V> | WeakMap<K, V> : Map<K, V>;
+
+export function exit(message: string, ...ctx: any[]): never {
+	if (ctx.length > 0) console.log("Error context:", { ...ctx });
+	throw createCustomError({ message });
+}
+exit.never = function never(...ctx: any[]): never {
+	exit("Reached unreachable code", ...ctx);
+};
+export function assert(predicate: boolean, err?: string, ...ctx: any[]): asserts predicate {
+	__DEV__: if (typeof predicate !== "boolean") exit("Expected boolean", predicate);
+	if (false === predicate) exit(err ?? "Assertion failed", ...ctx);
+}
+export function Identity<T>(v: T): T {
+	return v;
+}
+
+export function last_of<T extends ArrayLike<any>>(arr: T): T extends readonly [...infer A, infer U] ? U : T[number] {
+	__DEV__: isArrayLike(arr) || exit("Expected Array"), arr.length > 0 || exit("Attempted to retrieve last item of an empty array", arr);
+	return arr[arr.length - 1];
+}
+export function maybe_last_of<T extends readonly any[] | undefined>(
+	arr: T
+): T extends any[] ? (T extends readonly [...infer A, infer U] ? U : T[number]) : undefined {
+	return (undefined === arr || 0 === arr.length ? undefined : last_of(arr as any[])) as any;
+}
+
+export function normPath(filepath: string) {
+	return filepath.replace(/^file:\/\/\//, "").replace(/\\\\?/g, "/");
+}
+
+export function print_string(str: string) {
+	return /[\u0000-\u0020]/.test(str)
+		? str
+				.replace(/ /g, "•")
+				.replace(/\n/g, "↲")
+				.replace(/\t/g, "╚")
+				.replace(/[\u0000-\u0020]/g, "□")
+		: str;
+}
+
+function isArrayLike(value: any): value is ArrayLike<unknown> {
+	return is_object(value) && oisArrayLike(value);
+}
+
+function oisArrayLike(value: {}): value is ArrayLike<unknown> {
+	return "length" in value && (0 === (value as any).length || "0" in value);
+}
+
+export function binarySearchIn<T extends {}>(array: ArrayLike<T>, target: number, toValue: (item: T) => number) {
+	if (isEmpty(array)) return -1;
+	let i = 0;
+	let low = 0;
+	let high = array.length - 1;
+	let value = toValue(array[high]);
+	if (target >= value) return high;
+	else high--;
+	while (low <= high) {
+		i = low + ((high - low) >> 1);
+		value = toValue(array[i]);
+		if (target === value) return i;
+		if (target > value) low = i + 1;
+		else high = i - 1;
+	}
+	return low - 1;
+}
+
+export function getTerminalWidth(fallbackWidth = 200) {
+	return globalThis?.process?.stdout?.columns ?? fallbackWidth;
+}
+
+// @ts-ignore
+const isBrowser = typeof window !== "undefined" && typeof window.document !== "undefined";
+export const color = ((cfn, mfn) => ({
+	black: cfn(30),
+	red: cfn(31),
+	green: cfn(32),
+	yellow: cfn(33),
+	blue: cfn(34),
+	magenta: cfn(35),
+	cyan: cfn(36),
+	white: cfn(37),
+	grey: cfn(90),
+	bold: mfn(1, 22),
+	italic: mfn(3, 23),
+	underline: mfn(4, 24),
+	hidden: mfn(8, 28),
+	hiddenCursor: (str: string) => `\x1B[?25l${str}\x1B[?25h`,
+	unstyle: (str: string) => str.replace(/\x1B\[[0-9][0-9]?m/g, ""),
+	unstyledLength: (str: string) => str.replace(/\x1B\[[0-9][0-9]?m/g, "").length,
+	link: (str: string) => color.underline(color.blue(str)),
+}))(
+	(c1: number) => (isBrowser ? Identity : (str: string) => `\x1B[${c1}m${str.replace(/\x1B\[39m/g, `\x1B[${c1}m`)}\x1B[39m`),
+	(c1: number, c2: number) => (isBrowser ? Identity : (str: string) => `\x1B[${c1}m${str}\x1B[${c2}m`)
+);
+export function Map_get<K extends object, V>(map: WeakMap<K, V>, key: K, init: (key: K) => V): V;
+export function Map_get<K, V>(map: Map<K, V>, key: K, init: (key: K) => V): V;
+export function Map_get<K, V>(map: anymap<K, V>, key: K, init: (key: K) => V): V {
+	if (!map.has(key)) map.set(key, init(key));
+	return map.get(key)!;
+}
+export function isEmpty(array: ArrayLike<any>): boolean {
+	__DEV__: assert(isArrayLike(array));
+	return 0 === array.length;
+}
+export function Array_splice<T extends any[]>(array: T, target: T[number], index: number = array.indexOf(target)) {
+	__DEV__: {
+		const i = arguments.length === 2 ? array.indexOf(target) : index;
+		assert(i === index && i !== -1 && i === array.lastIndexOf(target), "", { array, target, index, i });
+	}
+	array.splice(index, 1);
+}
+export function Array_replace<T extends any[]>(array: T, target: T[number], ...replacements: T[number][]) {
+	const i = array.indexOf(target);
+	__DEV__: if (i === -1 || i !== array.lastIndexOf(target))
+		exit("Array_replace", { index: i, lastIndex: array.lastIndexOf(target), array, target, replacements });
+	array.splice(array.indexOf(target), 1, ...replacements);
+}
+export function has_key_defined<T extends object, K extends T extends never ? never : keyof T>(
+	o: T,
+	k: K
+): o is K extends never
+	? never
+	: T extends { [k in K]: any }
+	? T & { [k in K]: {} }
+	: T extends { [k in K]?: any }
+	? T & { [k in K]: {} }
+	: never {
+	return k in o && undefined !== o[k];
+}
+
+export function is_object(data: unknown): data is object | ({ [key: string]: unknown } | unknown[]) {
+	return "object" === typeof data && null !== data;
+}
+
+export function is_array(data: unknown): data is any[] {
+	return Array.isArray(data);
+}
+
+function ois_vobject(data: any) {
+	__DEV__: assert(is_object(data));
+	switch (data.constructor) {
+		case Array:
+		case Object:
+		case Set:
+		case Map:
+			return true;
+		default:
+			return false;
+	}
+}
+
+export function each<A extends vObject>(data: A, callback: itfn<A, void>): void;
+export function each(data: any, callback: (value: any, index: any) => void): void {
+	__DEV__: assert(ois_vobject(data));
+	// prettier-ignore
+	switch (data.constructor) {
+		case Array: { let i = 0; for (; i < data.length; i++) callback(data[i], i); return; }
+		case Object: { let k; for (k in data) callback(data[k], k); return; }
+		case Set: { let d; for (d of data) callback(d, undefined!); return; }
+		case Map: { let e; for (e of data) callback(e[1], e[0]); return; }
+		default:  { let x; for (x of data) callback(x, undefined!); return; }
+	}
+}
+
+export function iLast(index: number, array: any[]) {
+	return 1 + index === array.length;
+}
+
+export function find_last<T>(arr: T[], test: itfn<T[], boolean>): T | undefined {
+	for (var i = arr.length; --i !== -1; ) if (test(arr[i], i)) return arr[i];
+}
+
+export function try_eval<T>(fn: () => T): T | undefined {
+	try {
+		return fn();
+	} catch (e) {
+		return undefined;
+	}
+}
+
+export function clamp(min: number, max: number, value: number) {
+	return value > min ? (value < max ? value : max) : min;
+}
+
+export type MaybeFlatten<T> = T extends ReadonlyArray<infer U> ? MaybeFlatten<Exclude<U, T>> : T;
+export type FlatArray<T> = MaybeFlatten<T>[];
+export function flat<T extends readonly any[]>(arr: T): FlatArray<T> {
+	return (arr as any as [any]).flat(Infinity);
+}
+export function flatMap<T extends readonly any[], R>(arr: T, mapFn: (item: T[number], index: number, array: T) => R): FlatArray<R> {
+	return flat(arr.map(mapFn as any));
+}
+
+export function joinln(...arr: string[]): string {
+	return arr.join("\n");
+}
+
+export function join_lines(fn: () => Generator<string, void, void>): string {
+	return [...fn()].join("\n");
+}
+
+export function reduce_tagged_template<T>(args: [strings: TemplateStringsArray, ...values: T[]], map: (value: T) => string) {
+	for (var str = "" + args[0][0], i = 1; i < args.length; i++) str += map(args[i] as T) + args[0][i];
+	return str;
+}
+
+export function map_tagged_template<T, R>(args: [strings: TemplateStringsArray, ...values: T[]], map: (value: T) => R) {
+	const arr: (R | string)[] = [args[0][0]];
+	for (var i = 1; i < args.length; i++) arr.push(map(args[i] as T), args[0][i]);
+	return arr;
+}
+
+export function spliceAll<T extends any[]>(array: T): [...T] {
+	const r: [...T] = [...array];
+	array.length = 0;
+	return r;
+}
+
+export function spread<R>(fn: () => Iterable<R>): R[] {
+	return [...fn()];
+}

frontend/src/common/prettier/plugins/rust/utils/debug.ts

@@ -0,0 +1,141 @@
+import { clamp, color, getTerminalWidth, normPath } from "./common";
+
+const cwd = 
+	typeof process === "object" && typeof process?.cwd === "function" ? /* @__PURE__ */ normPath(/* @__PURE__ */ process.cwd() ?? "") : "";
+function normPath_strip_cwd(filepath: string) {
+	let normFilePath = normPath(filepath);
+	return normFilePath.startsWith(cwd) ? normFilePath.slice(cwd.length + 1) : normFilePath;
+}
+
+type StackStyleFn = (callee: string, item: StackItem) => (str: string) => string;
+interface Stack extends Array<StackItem> {
+	message: string;
+	style?: { callee?: StackStyleFn; url?: StackStyleFn } | undefined;
+}
+
+class StackLine {
+	declare readonly raw: string;
+	declare readonly callee: string;
+	declare readonly filepath: string;
+	declare readonly line: string;
+	declare readonly col: string;
+	declare readonly other: string;
+	declare readonly url: string;
+	constructor(raw: string) {
+		({
+			1: this.callee = "",
+			2: this.filepath = "",
+			3: this.line = "",
+			4: this.col = "",
+			5: this.other = "",
+		} = (this.raw = raw).match(/at (?:(.+?)\s+\()?(?:(.+?):([0-9]+)(?::([0-9]+))?|([^)]+))\)?/) ?? ["", "", "", "", "", ""]);
+		this.url = this.filepath //
+			? normPath_strip_cwd(this.filepath) + (this.line && this.col && `:${this.line}:${this.col}`)
+			: this.other === "native"
+			? "<native>"
+			: "";
+	}
+}
+
+function getPrintWidth() {
+	return clamp(0, getTerminalWidth(128), 200) - 4;
+}
+
+class StackItem extends StackLine {
+	constructor(private readonly stack: Stack, readonly i: number, raw: string) {
+		super(raw);
+	}
+	hidden = false;
+	hide() {
+		this.hidden = true;
+		return this;
+	}
+	hideNext(n: number) {
+		for (let i = 0; i < n; i++) this.at(i)?.hide();
+	}
+	hideWhileTrue(test: (line: StackItem) => boolean) {
+		let line: StackItem | undefined = this;
+		while (line && test(line)) line = line.hide().next();
+	}
+	at(relIndex: number) {
+		return this.i + relIndex >= this.stack.length || this.i + relIndex < 0 ? undefined : this.stack[this.i + relIndex];
+	}
+	next() {
+		return this.at(+1);
+	}
+	toString() {
+		const url = this.url;
+		const calleeColor = this.stack.style?.callee?.(this.callee, this) ?? color.cyan;
+		const urlColor = this.stack.style?.url?.(url, this) ?? color.grey;
+		return compose2Cols("    at " + calleeColor(this.callee), urlColor(url), getPrintWidth());
+	}
+}
+
+// prettier-ignore
+function createStack(message: string, Error_stack: string, style: Stack["style"]): Stack {
+	for (var STACK: Stack = [] as any, i = 0, stack = Error_stack.split("\n").slice(2); i < stack.length; i++) STACK[i] = new StackItem(STACK, i, stack[i]);
+	return (STACK.message = message), (STACK.style = style), STACK;
+}
+
+function composeStack(stack: Stack) {
+	var hidden = 0;
+	var str = stack.message;
+	for (var item of stack) item.hidden ? ++hidden : (str += "\n" + item.toString());
+	return str + (hidden > 0 ? "\n" + color.grey(compose2Cols("", `...filtered ${hidden} lines`, getPrintWidth())) : "");
+}
+
+export function get_caller_cmd(offset = 0) {
+	const obj: { stack: string } = {} as any;
+	Error.captureStackTrace(obj, get_caller_cmd);
+	const lines = obj.stack.split("\n");
+	return new StackLine(lines[1 + clamp(0, lines.length - 2, offset)]).url;
+}
+
+var Error_prepareStackTrace;
+let replaced_default_prepareStackTrace = false;
+function custom_prepareStackTrace(err, calls) {
+	return (Error_prepareStackTrace?.(err, calls) ?? calls.join("\n"))?.replace(/file:\/\/\//g, "").replace(/\\\\?/g, "/") ?? calls;
+}
+
+export function overrideDefaultError(silent = false) {
+	if (replaced_default_prepareStackTrace === (replaced_default_prepareStackTrace = true)) return;
+	Error_prepareStackTrace = Error.prepareStackTrace ?? ((_, calls) => calls.join("\n"));
+	Error.prepareStackTrace = custom_prepareStackTrace;
+	if (!silent) console.log(color.grey(`[devtools] Replaced Error.prepareStackTrace at ${get_caller_cmd(1)}`));
+}
+
+export function createCustomError({
+	message = "Unknown Error",
+	editStack = (stack: StackItem[]) => {},
+	style = undefined as Stack["style"],
+	stackTraceLimit = 20,
+}): Error {
+	const _stackTraceLimit = Error.stackTraceLimit;
+	const _prepareStackTrace = Error.prepareStackTrace;
+	if (replaced_default_prepareStackTrace && _prepareStackTrace === custom_prepareStackTrace)
+		Error.prepareStackTrace = Error_prepareStackTrace;
+
+	Error.stackTraceLimit = stackTraceLimit;
+
+	const _ctx: { stack: string } = {} as any;
+
+	Error.captureStackTrace(_ctx, createCustomError);
+
+	const stack = createStack(message, _ctx.stack, style);
+	Error.prepareStackTrace = function (err, calls) {
+		editStack(stack);
+		return composeStack(stack);
+	};
+
+	const err = new Error(message); // (get) to trigger prepareStackTrace, (set) to prevent treeshaking
+	err.stack = err.stack;
+
+	Error.stackTraceLimit = _stackTraceLimit;
+	Error.prepareStackTrace = _prepareStackTrace;
+
+	return err;
+}
+
+function compose2Cols(left: string, right: string, len = 64, min = 1) {
+	return left + " ".repeat(clamp(min, len, len - (color.unstyledLength(left) + color.unstyledLength(right)))) + right;
+}

frontend/src/common/prettier/plugins/scala/index.ts

@@ -0,0 +1,109 @@
+import { createScalaPrinter } from "./printer";
+import { parse, type ScalaCstNode, type IToken } from "./scala-parser";
+import { type Plugin, type SupportOption } from "prettier";
+
+/**
+ * Prettierがサポートする言語の定義
+ */
+const languages = [
+  {
+    name: "Scala",
+    parsers: ["scala"],
+    extensions: [".scala", ".sc"],
+    vscodeLanguageIds: ["scala"],
+  },
+];
+
+/**
+ * Scalaパーサーの定義
+ */
+const parsers = {
+  scala: {
+    parse: (text: string) => {
+      const result = parse(text);
+
+      // シンプルなコメント保持: ASTに格納してvisitorで処理
+      const ast = {
+        ...result.cst,
+        comments: [], // Prettierの検証を回避
+        originalComments: result.comments || [], // プラグイン独自のコメント格納
+        type: "compilationUnit",
+      };
+      return ast;
+    },
+    astFormat: "scala-cst",
+    locStart: (node: ScalaCstNode | IToken) => {
+      // Handle comment tokens (from Chevrotain lexer)
+      if ("startOffset" in node && node.startOffset !== undefined) {
+        return node.startOffset;
+      }
+      // Handle CST nodes
+      if ("location" in node && node.location?.startOffset !== undefined) {
+        return node.location.startOffset;
+      }
+      return 0;
+    },
+    locEnd: (node: ScalaCstNode | IToken) => {
+      // Handle comment tokens (from Chevrotain lexer)
+      if ("endOffset" in node && node.endOffset !== undefined) {
+        return node.endOffset + 1; // Chevrotain endOffset is inclusive, Prettier expects exclusive
+      }
+      // Handle CST nodes
+      if ("location" in node && node.location?.endOffset !== undefined) {
+        return node.location.endOffset + 1; // Chevrotain endOffset is inclusive, Prettier expects exclusive
+      }
+      return 1;
+    },
+    hasPragma: () => false,
+  },
+};
+
+/**
+ * プリンターの定義
+ */
+const printers = {
+  "scala-cst": createScalaPrinter(),
+};
+
+/**
+ * プラグインオプション（scalafmt互換性 - フェーズ1）
+ */
+const options: Record<string, SupportOption> = {
+  // Prettier standard options with Scala-specific defaults
+  semi: {
+    type: "boolean",
+    default: false, // Scala convention: omit semicolons
+    description: "Add semicolons at the end of statements",
+    category: "Global",
+  } as const,
+
+  // Deprecated options (backward compatibility)
+  scalaLineWidth: {
+    type: "int",
+    default: 80,
+    description: "Maximum line width (DEPRECATED: use printWidth instead)",
+    category: "Scala",
+  } as const,
+  scalaIndentStyle: {
+    type: "choice",
+    default: "spaces",
+    choices: [
+      { value: "spaces", description: "Use spaces for indentation" },
+      { value: "tabs", description: "Use tabs for indentation" },
+    ],
+    description: "Indentation style (DEPRECATED: use useTabs instead)",
+    category: "Scala",
+  } as const,
+};
+
+/**
+ * Prettierプラグインのエクスポート
+ */
+const plugin: Plugin = {
+  languages,
+  parsers,
+  printers,
+  options,
+};
+
+export default plugin;

frontend/src/common/prettier/plugins/scala/printer.ts

@@ -0,0 +1,91 @@
+import { CstNodeVisitor, type CSTNode } from "./visitor";
+import type { ScalaCstNode, IToken } from "./scala-parser";
+import { type Doc, type Printer, type AstPath, type Options } from "prettier";
+
+/**
+ * Scala用のPrettierプリンターを作成
+ * @returns Prettierプリンターオブジェクト
+ */
+export function createScalaPrinter(): Printer {
+  return {
+    /**
+     * ASTノードをフォーマット済みのテキストに変換
+     * @param path - 現在のノードへのパス
+     * @param options - Prettierオプション
+     * @param print - 子ノードを印刷するための関数
+     * @returns フォーマット済みのDoc
+     */
+    print(
+      path: AstPath<ScalaCstNode>,
+      options: Options,
+      print: (path: AstPath) => Doc,
+    ): Doc {
+      const node = path.getValue();
+
+      const visitor = new CstNodeVisitor();
+      const result = visitor.visit(node, {
+        path,
+        options: {
+          printWidth: options.printWidth,
+          tabWidth: options.tabWidth,
+          useTabs: options.useTabs,
+          semi: options.semi,
+          singleQuote: options.singleQuote,
+          trailingComma:
+            options.trailingComma === "es5" ? "all" : options.trailingComma,
+        },
+        print: (childNode: CSTNode) => {
+          // 子ノード用のモックパスを作成
+          const mockPath = {
+            getValue: () => childNode,
+            call: (fn: () => unknown) => fn(),
+          };
+          return String(print(mockPath as AstPath<unknown>));
+        },
+        indentLevel: 0,
+      });
+
+      // 文字列結果をPrettierのDocに変換
+      return result;
+    },
+    /**
+     * コメントを印刷
+     * @param path - コメントトークンへのパス
+     * @returns フォーマット済みのコメント
+     */
+    printComment(path: AstPath<IToken>): Doc {
+      const comment = path.getValue();
+      if (!comment) return "";
+
+      // Chevrotainのimageプロパティを使用
+      if (typeof comment.image === "string") {
+        return comment.image;
+      }
+
+      // fallback
+      if (typeof comment.image === "string") {
+        return comment.image;
+      }
+
+      // デバッグ: コメント構造を確認
+      console.log("Unexpected comment structure in printComment:", comment);
+      return "";
+    },
+    canAttachComment(): boolean {
+      // コメント機能を一時的に無効化
+      return false;
+    },
+    willPrintOwnComments(): boolean {
+      return false; // Prettier標準のコメント処理を使用しない
+    },
+    insertPragma(text: string): string {
+      return text;
+    },
+    hasPrettierIgnore(): boolean {
+      return false;
+    },
+    isBlockComment(comment: IToken): boolean {
+      return comment.tokenType?.name === "BlockComment";
+    },
+  };
+}

frontend/src/common/prettier/plugins/scala/scala-parser/index.ts

@@ -0,0 +1,206 @@
+import { ScalaLexer } from "./lexer";
+import { parserInstance } from "./parser";
+import type {
+  ParseResult,
+  ScalaCstNode,
+  TokenBounds,
+  LineColumn,
+} from "./types";
+import type { IToken, CstElement } from "chevrotain";
+
+export { ScalaLexer, allTokens } from "./lexer";
+export { ScalaParser, parserInstance } from "./parser";
+export type {
+  ParseResult,
+  ScalaCstNode,
+  TokenBounds,
+  LineColumn,
+} from "./types";
+export type { IToken } from "chevrotain";
+
+/**
+ * CSTノードに位置情報を自動設定するヘルパー関数
+ * @param cst - 処理対象のCSTノード
+ * @param tokens - 解析で使用されたトークンの配列
+ * @param text - 元のソースコードテキスト
+ * @returns 位置情報が付与されたCSTノード
+ */
+function addLocationToCST(
+  cst: ScalaCstNode,
+  tokens: IToken[],
+  text: string,
+): ScalaCstNode {
+  if (!cst || !tokens) return cst;
+
+  // テキストから行の開始位置を計算
+  const lineStarts = [0]; // 最初の行は0から始まる
+  for (let i = 0; i < text.length; i++) {
+    if (text[i] === "\n") {
+      lineStarts.push(i + 1);
+    }
+  }
+
+  // オフセットから行番号と列番号を取得
+  function getLineAndColumn(offset: number): LineColumn {
+    let line = 1;
+    for (let i = 0; i < lineStarts.length - 1; i++) {
+      if (offset >= lineStarts[i] && offset < lineStarts[i + 1]) {
+        line = i + 1;
+        break;
+      }
+    }
+    if (offset >= lineStarts[lineStarts.length - 1]) {
+      line = lineStarts.length;
+    }
+
+    const column = offset - lineStarts[line - 1] + 1;
+    return { line, column };
+  }
+
+  // トークンから最小・最大位置を計算
+  function findTokenBounds(node: ScalaCstNode): TokenBounds | null {
+    if (!node) return null;
+
+    let minStart = Infinity;
+    let maxEnd = -1;
+
+    function findTokensInNode(n: ScalaCstNode | IToken): void {
+      if (!n) return;
+
+      // トークンの場合
+      if (
+        "startOffset" in n &&
+        "endOffset" in n &&
+        n.startOffset !== undefined &&
+        n.endOffset !== undefined
+      ) {
+        minStart = Math.min(minStart, n.startOffset);
+        maxEnd = Math.max(maxEnd, n.endOffset);
+        return;
+      }
+
+      // CSTノードの場合
+      if ("children" in n && n.children) {
+        for (const children of Object.values(n.children)) {
+          if (Array.isArray(children)) {
+            children.forEach((child) => {
+              // CstElementをScalaCstNode | ITokenに安全に変換
+              if ("children" in child) {
+                findTokensInNode(child as ScalaCstNode);
+              } else {
+                findTokensInNode(child as IToken);
+              }
+            });
+          }
+        }
+      }
+    }
+
+    findTokensInNode(node);
+
+    if (minStart === Infinity || maxEnd === -1) {
+      return null;
+    }
+
+    return { start: minStart, end: maxEnd };
+  }
+
+  // 再帰的にCSTノードに位置情報を設定
+  function setCSTLocation(node: ScalaCstNode): ScalaCstNode {
+    if (!node) return node;
+
+    // トークンの場合はそのまま返す
+    if (node.startOffset !== undefined) {
+      return node;
+    }
+
+    // CSTノードの場合
+    if (node.children) {
+      // 子ノードを先に処理
+      const processedChildren: Record<string, CstElement[]> = {};
+      for (const [key, children] of Object.entries(node.children)) {
+        if (Array.isArray(children)) {
+          processedChildren[key] = children.map((child) => {
+            if ("children" in child) {
+              return setCSTLocation(child as ScalaCstNode);
+            }
+            return child; // IToken
+          });
+        }
+      }
+
+      // このノードの位置を計算
+      const bounds = findTokenBounds({ ...node, children: processedChildren });
+
+      if (bounds) {
+        const startLoc = getLineAndColumn(bounds.start);
+        const endLoc = getLineAndColumn(bounds.end);
+
+        return {
+          ...node,
+          children: processedChildren,
+          location: {
+            startOffset: bounds.start,
+            endOffset: bounds.end,
+            startLine: startLoc.line,
+            endLine: endLoc.line,
+            startColumn: startLoc.column,
+            endColumn: endLoc.column,
+          },
+        };
+      } else {
+        return {
+          ...node,
+          children: processedChildren,
+        };
+      }
+    }
+
+    return node;
+  }
+
+  return setCSTLocation(cst);
+}
+
+export function parse(text: string): ParseResult {
+  // Use legacy parser for now until modular parser is fixed
+  return parseLegacy(text);
+}
+
+// Legacy parser function (has left recursion issues)
+export function parseLegacy(text: string): ParseResult {
+  // Tokenize
+  const lexResult = ScalaLexer.tokenize(text);
+
+  if (lexResult.errors.length > 0) {
+    throw new Error(
+      `Lexing errors: ${lexResult.errors.map((e) => e.message).join(", ")}`,
+    );
+  }
+
+  // Parse
+  parserInstance.input = lexResult.tokens;
+  const cst = parserInstance.compilationUnit();
+
+  if (parserInstance.errors.length > 0) {
+    throw new Error(
+      `Parsing errors: ${parserInstance.errors.map((e) => e.message).join(", ")}`,
+    );
+  }
+
+  // CSTに位置情報を追加
+  const cstWithLocation = addLocationToCST(
+    cst as ScalaCstNode,
+    lexResult.tokens,
+    text,
+  );
+
+  return {
+    cst: cstWithLocation,
+    errors: [],
+    comments: lexResult.groups.comments || [],
+  };
+}
+
+// Note: parseModular function was removed as the modular parser integration
+// is still in development. Use the main parse() function instead.

frontend/src/common/prettier/plugins/scala/scala-parser/lexer.ts

@@ -0,0 +1,479 @@
+import { createToken, Lexer, ILexingResult } from "chevrotain";
+
+// Keywords
+export const Val = createToken({ name: "Val", pattern: /val\b/ });
+export const Var = createToken({ name: "Var", pattern: /var\b/ });
+export const Def = createToken({ name: "Def", pattern: /def\b/ });
+export const Class = createToken({ name: "Class", pattern: /class\b/ });
+export const ObjectKeyword = createToken({
+  name: "Object",
+  pattern: /object\b/,
+});
+export const Trait = createToken({ name: "Trait", pattern: /trait\b/ });
+export const Extends = createToken({ name: "Extends", pattern: /extends\b/ });
+export const With = createToken({ name: "With", pattern: /with\b/ });
+export const If = createToken({ name: "If", pattern: /if\b/ });
+export const Else = createToken({ name: "Else", pattern: /else\b/ });
+export const While = createToken({ name: "While", pattern: /while\b/ });
+export const For = createToken({ name: "For", pattern: /for\b/ });
+export const Yield = createToken({ name: "Yield", pattern: /yield\b/ });
+export const Return = createToken({ name: "Return", pattern: /return\b/ });
+export const New = createToken({ name: "New", pattern: /new\b/ });
+export const This = createToken({ name: "This", pattern: /this\b/ });
+export const Super = createToken({ name: "Super", pattern: /super\b/ });
+export const Package = createToken({ name: "Package", pattern: /package\b/ });
+export const Import = createToken({ name: "Import", pattern: /import\b/ });
+export const Case = createToken({ name: "Case", pattern: /case\b/ });
+export const Match = createToken({ name: "Match", pattern: /match\b/ });
+export const Try = createToken({ name: "Try", pattern: /try\b/ });
+export const Catch = createToken({ name: "Catch", pattern: /catch\b/ });
+export const Finally = createToken({ name: "Finally", pattern: /finally\b/ });
+export const Throw = createToken({ name: "Throw", pattern: /throw\b/ });
+export const Null = createToken({ name: "Null", pattern: /null\b/ });
+export const True = createToken({ name: "True", pattern: /true\b/ });
+export const False = createToken({ name: "False", pattern: /false\b/ });
+export const NotImplemented = createToken({
+  name: "NotImplemented",
+  pattern: /\?\?\?/,
+});
+export const Type = createToken({ name: "Type", pattern: /type\b/ });
+export const Private = createToken({ name: "Private", pattern: /private\b/ });
+export const Protected = createToken({
+  name: "Protected",
+  pattern: /protected\b/,
+});
+export const Public = createToken({ name: "Public", pattern: /public\b/ });
+export const Abstract = createToken({
+  name: "Abstract",
+  pattern: /abstract\b/,
+});
+export const Final = createToken({ name: "Final", pattern: /final\b/ });
+export const Sealed = createToken({ name: "Sealed", pattern: /sealed\b/ });
+export const Implicit = createToken({
+  name: "Implicit",
+  pattern: /implicit\b/,
+});
+export const Lazy = createToken({ name: "Lazy", pattern: /lazy\b/ });
+export const Override = createToken({
+  name: "Override",
+  pattern: /override\b/,
+});
+export const Given = createToken({ name: "Given", pattern: /given\b/ });
+export const Using = createToken({ name: "Using", pattern: /using\b/ });
+export const To = createToken({ name: "To", pattern: /to\b/ });
+export const Enum = createToken({ name: "Enum", pattern: /enum\b/ });
+export const Array = createToken({ name: "Array", pattern: /Array\b/ });
+export const Extension = createToken({
+  name: "Extension",
+  pattern: /extension\b/,
+});
+export const Export = createToken({ name: "Export", pattern: /export\b/ });
+export const Opaque = createToken({ name: "Opaque", pattern: /opaque\b/ });
+export const Inline = createToken({ name: "Inline", pattern: /inline\b/ });
+export const Transparent = createToken({
+  name: "Transparent",
+  pattern: /transparent\b/,
+});
+
+// Identifiers (must come after keywords)
+// Enhanced Unicode identifier support following Scala Language Specification
+// Operator identifier for custom operators (e.g., +++, <~>, etc.)
+export const OperatorIdentifier = createToken({
+  name: "OperatorIdentifier",
+  pattern: /[+\-*/%:&|^<>=!~?#@$\\]+/,
+});
+
+// Backward compatible with existing implementation, enhanced mathematical symbol support
+// Supports: Latin, Greek, Cyrillic, CJK, Arabic, Hebrew, Mathematical symbols, Emojis (via surrogate pairs)
+export const Identifier = createToken({
+  name: "Identifier",
+  pattern:
+    /(?:_[a-zA-Z0-9_$\u00C0-\u00FF\u0370-\u03FF\u0400-\u04FF\u3040-\u309F\u30A0-\u30FF\u4E00-\u9FFF\u0590-\u05FF\u0600-\u06FF\u2200-\u22FF\u27C0-\u27EF\u2980-\u29FF\u2A00-\u2AFF]+|[a-zA-Z$\u00C0-\u00FF\u0370-\u03FF\u0400-\u04FF\u3040-\u309F\u30A0-\u30FF\u4E00-\u9FFF\u0590-\u05FF\u0600-\u06FF\u2200-\u22FF\u27C0-\u27EF\u2980-\u29FF\u2A00-\u2AFF][a-zA-Z0-9_$\u00C0-\u00FF\u0370-\u03FF\u0400-\u04FF\u3040-\u309F\u30A0-\u30FF\u4E00-\u9FFF\u0590-\u05FF\u0600-\u06FF\u2200-\u22FF\u27C0-\u27EF\u2980-\u29FF\u2A00-\u2AFF]*)/u,
+});
+
+// Literals
+export const IntegerLiteral = createToken({
+  name: "IntegerLiteral",
+  pattern: /-?\d+[lLiIsSbB]?/,
+});
+
+// Scientific notation literal (must come before FloatingPointLiteral)
+export const ScientificNotationLiteral = createToken({
+  name: "ScientificNotationLiteral",
+  pattern: /-?\d+(\.\d+)?[eE][+-]?\d+[fFdD]?/,
+});
+
+export const FloatingPointLiteral = createToken({
+  name: "FloatingPointLiteral",
+  pattern: /-?\d+\.\d+[fFdD]?|-?\.\d+[fFdD]?/,
+});
+
+export const StringLiteral = createToken({
+  name: "StringLiteral",
+  pattern: /"""[\s\S]*?"""|"([^"\\]|\\.|\\u[0-9A-Fa-f]{4})*"/,
+});
+
+export const InterpolatedStringLiteral = createToken({
+  name: "InterpolatedStringLiteral",
+  pattern:
+    /[a-zA-Z_][a-zA-Z0-9_]*"""[\s\S]*?"""|[a-zA-Z_][a-zA-Z0-9_]*"([^"\\]|\\.|\\u[0-9A-Fa-f]{4}|\$[a-zA-Z_][a-zA-Z0-9_]*|\$\{[^}]*\})*"/,
+});
+
+export const CharLiteral = createToken({
+  name: "CharLiteral",
+  pattern: /'([^'\\]|\\.|\\u[0-9A-Fa-f]{4})'/,
+});
+
+// Operators
+export const Equals = createToken({ name: "Equals", pattern: /=/ });
+export const Plus = createToken({ name: "Plus", pattern: /\+/ });
+export const Minus = createToken({ name: "Minus", pattern: /-/ });
+export const Star = createToken({ name: "Star", pattern: /\*/ });
+export const Slash = createToken({ name: "Slash", pattern: /\// });
+export const Backslash = createToken({ name: "Backslash", pattern: /\\/ });
+export const Percent = createToken({ name: "Percent", pattern: /%/ });
+export const LessThan = createToken({ name: "LessThan", pattern: /</ });
+export const GreaterThan = createToken({ name: "GreaterThan", pattern: />/ });
+export const LessThanEquals = createToken({
+  name: "LessThanEquals",
+  pattern: /<=/,
+});
+export const GreaterThanEquals = createToken({
+  name: "GreaterThanEquals",
+  pattern: />=/,
+});
+export const EqualsEquals = createToken({
+  name: "EqualsEquals",
+  pattern: /==/,
+});
+export const DoubleEquals = EqualsEquals; // Alias for modular parser compatibility
+export const NotEquals = createToken({ name: "NotEquals", pattern: /!=/ });
+export const LogicalAnd = createToken({ name: "LogicalAnd", pattern: /&&/ });
+export const LogicalOr = createToken({ name: "LogicalOr", pattern: /\|\|/ });
+export const Exclamation = createToken({ name: "Exclamation", pattern: /!/ });
+export const Arrow = createToken({ name: "Arrow", pattern: /=>/ });
+export const TypeLambdaArrow = createToken({
+  name: "TypeLambdaArrow",
+  pattern: /=>>/,
+});
+export const DoubleArrow = TypeLambdaArrow; // Alias for modular parser compatibility
+export const LeftArrow = createToken({ name: "LeftArrow", pattern: /<-/ });
+export const RightArrow = createToken({ name: "RightArrow", pattern: /->/ });
+export const ContextArrow = createToken({
+  name: "ContextArrow",
+  pattern: /\?=>/,
+});
+export const SubtypeOf = createToken({ name: "SubtypeOf", pattern: /<:/ });
+export const ColonLess = SubtypeOf; // Alias for modular parser compatibility
+export const SupertypeOf = createToken({ name: "SupertypeOf", pattern: />:/ });
+export const GreaterColon = SupertypeOf; // Alias for modular parser compatibility
+export const AppendOp = createToken({ name: "AppendOp", pattern: /:\+/ });
+export const PlusColon = AppendOp; // Alias for modular parser compatibility
+export const ColonPlus = createToken({ name: "ColonPlus", pattern: /:\+/ }); // Same as AppendOp but separate token for parser
+export const PrependOp = createToken({ name: "PrependOp", pattern: /::/ });
+export const ColonColon = PrependOp; // Alias for modular parser compatibility
+export const ConcatOp = createToken({ name: "ConcatOp", pattern: /\+\+/ });
+export const DoublePlus = ConcatOp; // Alias for modular parser compatibility
+export const AppendEquals = createToken({
+  name: "AppendEquals",
+  pattern: /\+\+=/,
+});
+// Compound assignment operators
+export const PlusEquals = createToken({ name: "PlusEquals", pattern: /\+=/ });
+export const MinusEquals = createToken({ name: "MinusEquals", pattern: /-=/ });
+export const StarEquals = createToken({ name: "StarEquals", pattern: /\*=/ });
+export const SlashEquals = createToken({ name: "SlashEquals", pattern: /\/=/ });
+export const PercentEquals = createToken({
+  name: "PercentEquals",
+  pattern: /%=/,
+});
+// sbt DSL operators
+export const DoublePercent = createToken({
+  name: "DoublePercent",
+  pattern: /%%/,
+});
+// Bitwise operators
+export const BitwiseAnd = createToken({ name: "BitwiseAnd", pattern: /&/ });
+export const BitwiseOr = createToken({ name: "BitwiseOr", pattern: /\|/ });
+export const BitwiseXor = createToken({ name: "BitwiseXor", pattern: /\^/ });
+export const BitwiseTilde = createToken({ name: "BitwiseTilde", pattern: /~/ });
+export const LeftShift = createToken({ name: "LeftShift", pattern: /<</ });
+export const RightShift = createToken({ name: "RightShift", pattern: />>/ });
+export const UnsignedRightShift = createToken({
+  name: "UnsignedRightShift",
+  pattern: />>>/,
+});
+export const Colon = createToken({ name: "Colon", pattern: /:/ });
+export const ColonEquals = createToken({ name: "ColonEquals", pattern: /:=/ });
+export const SbtAssign = ColonEquals; // Alias for sbt compatibility
+export const Semicolon = createToken({ name: "Semicolon", pattern: /;/ });
+export const Comma = createToken({ name: "Comma", pattern: /,/ });
+export const Dot = createToken({ name: "Dot", pattern: /\./ });
+export const Underscore = createToken({
+  name: "Underscore",
+  pattern: /_/,
+});
+export const At = createToken({ name: "At", pattern: /@/ });
+export const Question = createToken({ name: "Question", pattern: /\?/ });
+
+// Quote and Splice tokens for Scala 3 macros
+export const QuoteStart = createToken({ name: "QuoteStart", pattern: /'\{/ });
+export const SpliceStart = createToken({
+  name: "SpliceStart",
+  pattern: /\$\{/,
+});
+
+// Additional tokens for modular parser
+export const Quote = createToken({ name: "Quote", pattern: /'/ });
+export const Dollar = createToken({ name: "Dollar", pattern: /\$/ });
+// QuestionArrow is now alias for ContextArrow to avoid duplicate patterns
+export const QuestionArrow = ContextArrow;
+
+// String interpolation tokens
+export const InterpolatedString = createToken({
+  name: "InterpolatedString",
+  pattern: /s"([^"\\]|\\.|\\u[0-9A-Fa-f]{4})*"/,
+});
+export const FormattedString = createToken({
+  name: "FormattedString",
+  pattern: /f"([^"\\]|\\.|\\u[0-9A-Fa-f]{4})*"/,
+});
+export const RawString = createToken({
+  name: "RawString",
+  pattern: /raw"([^"\\]|\\.|\\u[0-9A-Fa-f]{4})*"/,
+});
+export const CustomInterpolatedString = createToken({
+  name: "CustomInterpolatedString",
+  pattern: /[a-zA-Z_][a-zA-Z0-9_]*"([^"\\]|\\.|\\u[0-9A-Fa-f]{4})*"/,
+});
+
+// Numeric suffix tokens
+export const LongSuffix = createToken({ name: "LongSuffix", pattern: /[lL]/ });
+export const IntSuffix = createToken({ name: "IntSuffix", pattern: /[iI]/ });
+export const ShortSuffix = createToken({
+  name: "ShortSuffix",
+  pattern: /[sS]/,
+});
+export const ByteSuffix = createToken({ name: "ByteSuffix", pattern: /[bB]/ });
+export const FloatSuffix = createToken({
+  name: "FloatSuffix",
+  pattern: /[fF]/,
+});
+export const DoubleSuffix = createToken({
+  name: "DoubleSuffix",
+  pattern: /[dD]/,
+});
+
+// Additional missing tokens
+export const Hash = createToken({ name: "Hash", pattern: /#/ });
+
+// Delimiters
+export const LeftParen = createToken({ name: "LeftParen", pattern: /\(/ });
+export const RightParen = createToken({ name: "RightParen", pattern: /\)/ });
+export const LeftBracket = createToken({ name: "LeftBracket", pattern: /\[/ });
+export const RightBracket = createToken({
+  name: "RightBracket",
+  pattern: /\]/,
+});
+export const LeftBrace = createToken({ name: "LeftBrace", pattern: /\{/ });
+export const RightBrace = createToken({ name: "RightBrace", pattern: /\}/ });
+
+// Whitespace and Comments
+export const WhiteSpace = createToken({
+  name: "WhiteSpace",
+  pattern: /\s+/,
+  group: Lexer.SKIPPED,
+});
+
+export const LineComment = createToken({
+  name: "LineComment",
+  pattern: /\/\/[^\n\r]*/,
+  group: "comments",
+});
+
+export const BlockComment = createToken({
+  name: "BlockComment",
+  pattern: /\/\*([^*]|\*(?!\/))*\*\//,
+  group: "comments",
+});
+
+// All tokens in order
+export const allTokens = [
+  // Comments (must come before operators)
+  LineComment,
+  BlockComment,
+
+  // Whitespace
+  WhiteSpace,
+
+  // Keywords (must come before Identifier)
+  Val,
+  Var,
+  Def,
+  Class,
+  ObjectKeyword,
+  Trait,
+  Extends,
+  With,
+  If,
+  Else,
+  While,
+  For,
+  Yield,
+  Return,
+  New,
+  This,
+  Super,
+  Package,
+  Import,
+  Case,
+  Match,
+  Try,
+  Catch,
+  Finally,
+  Throw,
+  Null,
+  True,
+  False,
+  NotImplemented,
+  Type,
+  Private,
+  Protected,
+  Public,
+  Abstract,
+  Final,
+  Sealed,
+  Implicit,
+  Lazy,
+  Override,
+  Given,
+  Using,
+  To,
+  Enum,
+  Array,
+  Extension,
+  Export,
+  Opaque,
+  Inline,
+  Transparent,
+
+  // Literals
+  ScientificNotationLiteral, // Must come before FloatingPointLiteral
+  FloatingPointLiteral, // Must come before IntegerLiteral
+  IntegerLiteral,
+  // String interpolation literals (must come before StringLiteral)
+  CustomInterpolatedString,
+  InterpolatedString,
+  FormattedString,
+  RawString,
+  InterpolatedStringLiteral, // Must come before StringLiteral
+  StringLiteral,
+  CharLiteral,
+
+  // Multi-character operators (must come before single-character)
+  TypeLambdaArrow, // Must come before Arrow to avoid ambiguity
+  ContextArrow, // Must come before Arrow to avoid ambiguity
+  Arrow,
+  LeftArrow,
+  RightArrow,
+  SubtypeOf,
+  SupertypeOf,
+  LessThanEquals,
+  GreaterThanEquals,
+  EqualsEquals,
+  NotEquals,
+  LogicalAnd,
+  LogicalOr,
+  ColonEquals, // := must come before :
+  AppendOp,
+  PrependOp,
+  AppendEquals, // ++= must come before ++
+  ConcatOp,
+  // Quote and splice tokens (must come before single-character)
+  QuoteStart, // '{ must come before single '
+  SpliceStart, // ${ must come before single $
+  // Compound assignment operators
+  PlusEquals,
+  MinusEquals,
+  StarEquals,
+  SlashEquals,
+  PercentEquals,
+  // Bitwise shift operators (must come before single-character)
+  UnsignedRightShift, // >>> must come before >>
+  LeftShift,
+  RightShift,
+
+  // Single-character operators
+  Equals,
+  Plus,
+  Minus,
+  Star,
+  Slash,
+  Backslash,
+  DoublePercent, // %% must come before single %
+  Percent,
+  LessThan,
+  GreaterThan,
+  Exclamation,
+  BitwiseAnd,
+  BitwiseOr,
+  BitwiseXor,
+  BitwiseTilde,
+  Colon,
+  Semicolon,
+  Comma,
+  Dot,
+  At,
+  // QuestionArrow removed - now an alias for ContextArrow
+  Question,
+  Quote,
+  Dollar,
+  Hash,
+
+  // Delimiters
+  LeftParen,
+  RightParen,
+  LeftBracket,
+  RightBracket,
+  LeftBrace,
+  RightBrace,
+
+  // Operator identifier (before regular identifier)
+  OperatorIdentifier,
+
+  // Identifier (must come before underscore)
+  Identifier,
+
+  // Underscore (must come after identifier to not interfere with _identifier patterns)
+  Underscore,
+];
+
+// レキサーの作成（インポート時の問題を回避するための遅延初期化）
+let scalaLexerInstance: Lexer | null = null;
+
+/**
+ * Scalaコードの字句解析を行うレキサー
+ */
+export const ScalaLexer = {
+  /**
+   * レキサーインスタンスを取得（遅延初期化）
+   * @returns Chevrotainレキサーのインスタンス
+   */
+  get instance(): Lexer {
+    if (!scalaLexerInstance) {
+      scalaLexerInstance = new Lexer(allTokens);
+    }
+    return scalaLexerInstance;
+  },
+  /**
+   * 入力文字列をトークン化
+   * @param input - 字句解析対象のScalaソースコード
+   * @returns トークン化の結果（トークン、エラー、グループ化されたトークン）
+   */
+  tokenize(input: string): ILexingResult {
+    return this.instance.tokenize(input);
+  },
+};
+
+// Export lexer instance for backward compatibility with tests
+export const lexerInstance = ScalaLexer;

frontend/src/common/prettier/plugins/scala/scala-parser/parser/base.ts

@@ -0,0 +1,58 @@
+/**
+ * Base parser module with shared utilities and interfaces
+ */
+import * as tokens from "../lexer";
+import { CstParser, ParserMethod, CstNode } from "chevrotain";
+import type { TokenType } from "chevrotain";
+
+export interface ParserRuleMixin {
+  // Utility methods for parser rules - these need to match CstParser access levels
+  RULE: CstParser["RULE"];
+  SUBRULE: CstParser["SUBRULE"];
+  CONSUME: CstParser["CONSUME"];
+  MANY: CstParser["MANY"];
+  MANY_SEP: CstParser["MANY_SEP"];
+  OPTION: CstParser["OPTION"];
+  OR: CstParser["OR"];
+  AT_LEAST_ONE: CstParser["AT_LEAST_ONE"];
+  AT_LEAST_ONE_SEP: CstParser["AT_LEAST_ONE_SEP"];
+  LA: CstParser["LA"];
+  performSelfAnalysis: CstParser["performSelfAnalysis"];
+}
+
+export abstract class BaseParserModule {
+  protected parser: ParserRuleMixin;
+
+  constructor(parser: ParserRuleMixin) {
+    this.parser = parser;
+  }
+
+  // Helper methods for common patterns
+  protected consumeTokenType(tokenType: TokenType) {
+    return this.parser.CONSUME(tokenType);
+  }
+
+  protected optionalConsume(tokenType: TokenType) {
+    return this.parser.OPTION(() => this.parser.CONSUME(tokenType));
+  }
+
+  protected manyOf(rule: () => void) {
+    return this.parser.MANY(rule);
+  }
+
+  protected oneOf(
+    alternatives: Array<{ ALT: () => void; GATE?: () => boolean }>,
+  ) {
+    return this.parser.OR(alternatives);
+  }
+
+  protected subrule(rule: ParserMethod<unknown[], CstNode>) {
+    return this.parser.SUBRULE(rule);
+  }
+
+  protected lookahead(offset: number) {
+    return this.parser.LA(offset);
+  }
+}
+
+export { tokens };

frontend/src/common/prettier/plugins/scala/scala-parser/parser/definitions.ts

@@ -0,0 +1,179 @@
+/**
+ * Definition parsing module for class, object, trait, method, and variable definitions
+ */
+import { BaseParserModule, tokens } from "./base";
+import type { ParserMethod, CstNode } from "chevrotain";
+
+export class DefinitionParserMixin extends BaseParserModule {
+  // Dependencies from other modules
+  annotation!: ParserMethod<unknown[], CstNode>;
+  modifier!: ParserMethod<unknown[], CstNode>;
+  typeParameters!: ParserMethod<unknown[], CstNode>;
+  classParameters!: ParserMethod<unknown[], CstNode>;
+  extendsClause!: ParserMethod<unknown[], CstNode>;
+  classBody!: ParserMethod<unknown[], CstNode>;
+  type!: ParserMethod<unknown[], CstNode>;
+  expression!: ParserMethod<unknown[], CstNode>;
+  pattern!: ParserMethod<unknown[], CstNode>;
+  parameterLists!: ParserMethod<unknown[], CstNode>;
+
+  // Class definition
+  classDefinition = this.parser.RULE("classDefinition", () => {
+    this.consumeTokenType(tokens.Class);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    // Constructor annotations (for DI patterns like @Inject())
+    this.manyOf(() => this.subrule(this.annotation));
+    // Constructor parameters (multiple parameter lists supported)
+    this.parser.MANY(() => this.subrule(this.classParameters));
+    this.parser.OPTION(() => this.subrule(this.extendsClause));
+    this.parser.OPTION(() => this.subrule(this.classBody));
+  });
+
+  // Object definition
+  objectDefinition = this.parser.RULE("objectDefinition", () => {
+    this.consumeTokenType(tokens.ObjectKeyword);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.extendsClause));
+    this.parser.OPTION(() => this.subrule(this.classBody));
+  });
+
+  // Trait definition
+  traitDefinition = this.parser.RULE("traitDefinition", () => {
+    this.consumeTokenType(tokens.Trait);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    this.parser.OPTION(() => this.subrule(this.extendsClause));
+    this.parser.OPTION(() => this.subrule(this.classBody));
+  });
+
+  // Enum definition (Scala 3)
+  enumDefinition = this.parser.RULE("enumDefinition", () => {
+    this.consumeTokenType(tokens.Enum);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    this.parser.OPTION(() => this.subrule(this.classParameters));
+    this.parser.OPTION(() => this.subrule(this.extendsClause));
+    this.consumeTokenType(tokens.LeftBrace);
+    this.manyOf(() => this.subrule(this.enumCaseDef));
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  enumCaseDef = this.parser.RULE("enumCaseDef", () => {
+    this.consumeTokenType(tokens.Case);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.classParameters));
+    this.parser.OPTION(() => this.subrule(this.extendsClause));
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+  });
+
+  // Extension definition (Scala 3)
+  extensionDefinition = this.parser.RULE("extensionDefinition", () => {
+    this.consumeTokenType(tokens.Extension);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    this.consumeTokenType(tokens.LeftParen);
+    this.consumeTokenType(tokens.Identifier);
+    this.consumeTokenType(tokens.Colon);
+    this.subrule(this.type);
+    this.consumeTokenType(tokens.RightParen);
+    this.consumeTokenType(tokens.LeftBrace);
+    this.manyOf(() => this.subrule(this.extensionMemberDef));
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  extensionMemberDef = this.parser.RULE("extensionMemberDef", () => {
+    this.manyOf(() => this.subrule(this.modifier));
+    this.subrule(this.defDefinition);
+  });
+
+  // Val definition
+  valDefinition = this.parser.RULE("valDefinition", () => {
+    this.consumeTokenType(tokens.Val);
+    this.oneOf([
+      {
+        // Simple variable with optional type: val x: Type = expr or val x: Type (abstract)
+        ALT: () => {
+          this.consumeTokenType(tokens.Identifier);
+          this.parser.OPTION(() => {
+            this.consumeTokenType(tokens.Colon);
+            this.subrule(this.type);
+          });
+          this.parser.OPTION(() => {
+            this.consumeTokenType(tokens.Equals);
+            this.subrule(this.expression);
+          });
+        },
+        GATE: () => {
+          // This alternative is for simple identifier patterns only
+          // Must handle: val x = ..., val x: Type = ..., val x: Type (abstract)
+          // Must NOT handle: val (x, y) = ..., val SomeClass(...) = ...
+          const first = this.lookahead(1);
+          const second = this.lookahead(2);
+
+          // If first token is not identifier, this is not a simple val
+          if (!first || first.tokenType !== tokens.Identifier) return false;
+
+          // If second token is left paren, this is a constructor pattern
+          if (second && second.tokenType === tokens.LeftParen) return false;
+
+          // Otherwise, this is a simple identifier (with or without type, with or without assignment)
+          return true;
+        },
+      },
+      {
+        // Pattern matching: val (x, y) = expr or val SomeClass(...) = expr
+        ALT: () => {
+          this.subrule(this.pattern);
+          this.consumeTokenType(tokens.Equals);
+          this.subrule(this.expression);
+        },
+      },
+    ]);
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+  });
+
+  // Var definition
+  varDefinition = this.parser.RULE("varDefinition", () => {
+    this.consumeTokenType(tokens.Var);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Colon);
+      this.subrule(this.type);
+    });
+    this.consumeTokenType(tokens.Equals);
+    this.subrule(this.expression);
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+  });
+
+  // Method definition
+  defDefinition = this.parser.RULE("defDefinition", () => {
+    this.consumeTokenType(tokens.Def);
+    this.oneOf([
+      // Regular method name
+      { ALT: () => this.consumeTokenType(tokens.Identifier) },
+      // Constructor (this keyword)
+      { ALT: () => this.consumeTokenType(tokens.This) },
+    ]);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    this.parser.OPTION(() => this.subrule(this.parameterLists));
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Colon);
+      this.subrule(this.type);
+    });
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Equals);
+      this.subrule(this.expression);
+    });
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+  });
+
+  // Type definition
+  typeDefinition = this.parser.RULE("typeDefinition", () => {
+    this.consumeTokenType(tokens.Type);
+    this.consumeTokenType(tokens.Identifier);
+    this.parser.OPTION(() => this.subrule(this.typeParameters));
+    this.consumeTokenType(tokens.Equals);
+    this.subrule(this.type);
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+  });
+}

frontend/src/common/prettier/plugins/scala/scala-parser/parser/expressions.ts

@@ -0,0 +1,425 @@
+/**
+ * Expression parsing module for all types of expressions in Scala
+ */
+import { BaseParserModule, tokens } from "./base";
+import type { ParserMethod, CstNode } from "chevrotain";
+
+export class ExpressionParserMixin extends BaseParserModule {
+  // Dependencies from other modules
+  annotation!: ParserMethod<unknown[], CstNode>;
+  modifier!: ParserMethod<unknown[], CstNode>;
+  type!: ParserMethod<unknown[], CstNode>;
+  literal!: ParserMethod<unknown[], CstNode>;
+  qualifiedIdentifier!: ParserMethod<unknown[], CstNode>;
+  pattern!: ParserMethod<unknown[], CstNode>;
+  parameterLists!: ParserMethod<unknown[], CstNode>;
+  typeArgument!: ParserMethod<unknown[], CstNode>;
+  caseClause!: ParserMethod<unknown[], CstNode>;
+  generator!: ParserMethod<unknown[], CstNode>;
+
+  // Main expression rule
+  expression = this.parser.RULE("expression", () => {
+    this.parser.OR([
+      // Polymorphic function literal (Scala 3)
+      {
+        ALT: () => this.subrule(this.polymorphicFunctionLiteral),
+        GATE: () => {
+          const la1 = this.parser.LA(1);
+          return la1?.tokenType === tokens.LeftBracket;
+        },
+      },
+      // Regular expressions
+      { ALT: () => this.subrule(this.assignmentOrInfixExpression) },
+    ]);
+  });
+
+  // Assignment or infix expression
+  assignmentOrInfixExpression = this.parser.RULE(
+    "assignmentOrInfixExpression",
+    () => {
+      this.subrule(this.postfixExpression);
+      this.parser.MANY(() => {
+        this.subrule(this.infixOperator);
+        this.subrule(this.postfixExpression);
+      });
+    },
+  );
+
+  // Postfix expression
+  postfixExpression = this.parser.RULE("postfixExpression", () => {
+    this.subrule(this.primaryExpression);
+    this.parser.MANY(() => {
+      this.parser.OR([
+        // Method call with parentheses
+        {
+          ALT: () => {
+            this.consumeTokenType(tokens.LeftParen);
+            this.parser.MANY_SEP({
+              SEP: tokens.Comma,
+              DEF: () => this.subrule(this.expression),
+            });
+            this.consumeTokenType(tokens.RightParen);
+          },
+        },
+        // Type arguments
+        {
+          ALT: () => {
+            this.consumeTokenType(tokens.LeftBracket);
+            this.parser.MANY_SEP({
+              SEP: tokens.Comma,
+              DEF: () => this.subrule(this.typeArgument),
+            });
+            this.consumeTokenType(tokens.RightBracket);
+          },
+        },
+        // Member access
+        {
+          ALT: () => {
+            this.consumeTokenType(tokens.Dot);
+            this.consumeTokenType(tokens.Identifier);
+          },
+        },
+        // Postfix operator (like Ask pattern ?)
+        {
+          ALT: () => {
+            this.consumeTokenType(tokens.Question);
+          },
+        },
+      ]);
+    });
+  });
+
+  // Primary expression
+  primaryExpression = this.parser.RULE("primaryExpression", () => {
+    this.parser.OR([
+      // Literals
+      { ALT: () => this.subrule(this.literal) },
+      // Identifier
+      { ALT: () => this.consumeTokenType(tokens.Identifier) },
+      // This and super
+      { ALT: () => this.consumeTokenType(tokens.This) },
+      { ALT: () => this.consumeTokenType(tokens.Super) },
+      // Underscore (placeholder)
+      { ALT: () => this.consumeTokenType(tokens.Underscore) },
+      // Parenthesized expression
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.OPTION(() => this.subrule(this.expression));
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+      // Block expression
+      { ALT: () => this.subrule(this.blockExpression) },
+      // New expression
+      { ALT: () => this.subrule(this.newExpression) },
+      // Partial function literal
+      { ALT: () => this.subrule(this.partialFunctionLiteral) },
+      // Quote expression (Scala 3)
+      { ALT: () => this.subrule(this.quoteExpression) },
+      // Splice expression (Scala 3)
+      { ALT: () => this.subrule(this.spliceExpression) },
+      // If expression
+      { ALT: () => this.subrule(this.ifExpression) },
+      // While expression
+      { ALT: () => this.subrule(this.whileExpression) },
+      // Try expression
+      { ALT: () => this.subrule(this.tryExpression) },
+      // For expression
+      { ALT: () => this.subrule(this.forExpression) },
+      // Match expression
+      {
+        ALT: () => {
+          this.subrule(this.expression);
+          this.consumeTokenType(tokens.Match);
+          this.consumeTokenType(tokens.LeftBrace);
+          this.parser.MANY(() => this.subrule(this.caseClause));
+          this.consumeTokenType(tokens.RightBrace);
+        },
+      },
+      // Lambda expression
+      {
+        ALT: () => {
+          this.parser.OR([
+            // Simple identifier lambda: x =>
+            {
+              ALT: () => {
+                this.consumeTokenType(tokens.Identifier);
+              },
+            },
+            // Multiple parameters with optional types: (x, y) =>
+            {
+              ALT: () => {
+                this.consumeTokenType(tokens.LeftParen);
+                this.parser.MANY_SEP({
+                  SEP: tokens.Comma,
+                  DEF: () => {
+                    this.consumeTokenType(tokens.Identifier);
+                    this.parser.OPTION(() => {
+                      this.consumeTokenType(tokens.Colon);
+                      this.subrule(this.type);
+                    });
+                  },
+                });
+                this.consumeTokenType(tokens.RightParen);
+              },
+            },
+          ]);
+          this.consumeTokenType(tokens.Arrow);
+          this.subrule(this.expression);
+        },
+        GATE: () => {
+          const la1 = this.parser.LA(1);
+          const la2 = this.parser.LA(2);
+
+          // Simple lambda: identifier =>
+          if (
+            la1?.tokenType === tokens.Identifier &&
+            la2?.tokenType === tokens.Arrow
+          ) {
+            return true;
+          }
+
+          // Parenthesized lambda: ( ... ) =>
+          if (la1?.tokenType === tokens.LeftParen) {
+            let i = 2;
+            let parenCount = 1;
+            while (parenCount > 0 && this.parser.LA(i)) {
+              const token = this.parser.LA(i);
+              if (token?.tokenType === tokens.LeftParen) parenCount++;
+              if (token?.tokenType === tokens.RightParen) parenCount--;
+              i++;
+            }
+            return this.parser.LA(i)?.tokenType === tokens.Arrow;
+          }
+
+          return false;
+        },
+      },
+    ]);
+  });
+
+  // Infix operator
+  infixOperator = this.parser.RULE("infixOperator", () => {
+    this.parser.OR([
+      // Special compound assignment operators
+      { ALT: () => this.consumeTokenType(tokens.PlusEquals) },
+      { ALT: () => this.consumeTokenType(tokens.MinusEquals) },
+      { ALT: () => this.consumeTokenType(tokens.StarEquals) },
+      { ALT: () => this.consumeTokenType(tokens.SlashEquals) },
+      { ALT: () => this.consumeTokenType(tokens.PercentEquals) },
+      { ALT: () => this.consumeTokenType(tokens.AppendEquals) },
+      // sbt-specific operators
+      { ALT: () => this.consumeTokenType(tokens.SbtAssign) },
+      { ALT: () => this.consumeTokenType(tokens.DoublePercent) },
+      // Basic operators
+      { ALT: () => this.consumeTokenType(tokens.Plus) },
+      { ALT: () => this.consumeTokenType(tokens.Minus) },
+      { ALT: () => this.consumeTokenType(tokens.Star) },
+      { ALT: () => this.consumeTokenType(tokens.Slash) },
+      { ALT: () => this.consumeTokenType(tokens.Percent) },
+      // Comparison operators
+      { ALT: () => this.consumeTokenType(tokens.Equals) },
+      { ALT: () => this.consumeTokenType(tokens.EqualsEquals) }, // Use EqualsEquals instead of DoubleEquals
+      { ALT: () => this.consumeTokenType(tokens.NotEquals) },
+      { ALT: () => this.consumeTokenType(tokens.LessThan) }, // Use LessThan instead of Less
+      { ALT: () => this.consumeTokenType(tokens.GreaterThan) }, // Use GreaterThan instead of Greater
+      { ALT: () => this.consumeTokenType(tokens.LessThanEquals) }, // Use LessThanEquals instead of LessEquals
+      { ALT: () => this.consumeTokenType(tokens.GreaterThanEquals) }, // Use GreaterThanEquals instead of GreaterEquals
+      // Logical operators
+      { ALT: () => this.consumeTokenType(tokens.LogicalAnd) }, // Use LogicalAnd instead of DoubleAmpersand
+      { ALT: () => this.consumeTokenType(tokens.LogicalOr) }, // Use LogicalOr instead of DoublePipe
+      // Bitwise operators
+      { ALT: () => this.consumeTokenType(tokens.BitwiseAnd) }, // Use BitwiseAnd instead of Ampersand
+      { ALT: () => this.consumeTokenType(tokens.BitwiseOr) }, // Use BitwiseOr instead of Pipe
+      { ALT: () => this.consumeTokenType(tokens.BitwiseXor) }, // Use BitwiseXor instead of Caret
+      // Shift operators
+      { ALT: () => this.consumeTokenType(tokens.LeftShift) }, // Use LeftShift instead of DoubleLeftAngle
+      { ALT: () => this.consumeTokenType(tokens.RightShift) }, // Use RightShift instead of DoubleRightAngle
+      { ALT: () => this.consumeTokenType(tokens.UnsignedRightShift) }, // Use UnsignedRightShift instead of TripleRightAngle
+      // Type operators
+      { ALT: () => this.consumeTokenType(tokens.Colon) },
+      { ALT: () => this.consumeTokenType(tokens.ColonEquals) },
+      // Collection operators
+      { ALT: () => this.consumeTokenType(tokens.ConcatOp) }, // Use ConcatOp instead of DoublePlus
+      { ALT: () => this.consumeTokenType(tokens.PrependOp) }, // Use PrependOp instead of ColonColon
+      { ALT: () => this.consumeTokenType(tokens.AppendOp) }, // Use AppendOp instead of ColonPlus/PlusColon
+      // XML operators
+      { ALT: () => this.consumeTokenType(tokens.Backslash) },
+      // General operator
+      { ALT: () => this.consumeTokenType(tokens.OperatorIdentifier) },
+      // Identifier as operator (for named methods used as infix)
+      {
+        ALT: () => this.consumeTokenType(tokens.Identifier),
+      },
+    ]);
+  });
+
+  // Polymorphic function literal (Scala 3)
+  polymorphicFunctionLiteral = this.parser.RULE(
+    "polymorphicFunctionLiteral",
+    () => {
+      this.consumeTokenType(tokens.LeftBracket);
+      this.parser.MANY_SEP({
+        SEP: tokens.Comma,
+        DEF: () => this.subrule(this.polymorphicTypeParameter),
+      });
+      this.consumeTokenType(tokens.RightBracket);
+      this.consumeTokenType(tokens.Arrow);
+      this.subrule(this.expression);
+    },
+  );
+
+  // New expression
+  newExpression = this.parser.RULE("newExpression", () => {
+    this.consumeTokenType(tokens.New);
+    this.parser.OR([
+      // New with class instantiation
+      {
+        ALT: () => {
+          this.subrule(this.type);
+          this.parser.MANY(() => {
+            this.consumeTokenType(tokens.LeftParen);
+            this.parser.MANY_SEP({
+              SEP: tokens.Comma,
+              DEF: () => this.subrule(this.expression),
+            });
+            this.consumeTokenType(tokens.RightParen);
+          });
+        },
+      },
+      // New with anonymous class
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftBrace);
+          // Class body content
+          this.consumeTokenType(tokens.RightBrace);
+        },
+      },
+    ]);
+  });
+
+  // Block expression
+  blockExpression = this.parser.RULE("blockExpression", () => {
+    this.consumeTokenType(tokens.LeftBrace);
+    this.parser.MANY(() => {
+      this.subrule(this.blockStatement);
+      this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+    });
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  // Partial function literal
+  partialFunctionLiteral = this.parser.RULE("partialFunctionLiteral", () => {
+    this.consumeTokenType(tokens.LeftBrace);
+    this.parser.AT_LEAST_ONE(() => this.subrule(this.caseClause));
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  // Quote expression (Scala 3)
+  quoteExpression = this.parser.RULE("quoteExpression", () => {
+    this.consumeTokenType(tokens.Quote);
+    this.consumeTokenType(tokens.LeftBrace);
+    this.subrule(this.expression);
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  // Splice expression (Scala 3)
+  spliceExpression = this.parser.RULE("spliceExpression", () => {
+    this.consumeTokenType(tokens.Dollar);
+    this.consumeTokenType(tokens.LeftBrace);
+    this.subrule(this.expression);
+    this.consumeTokenType(tokens.RightBrace);
+  });
+
+  // If expression
+  ifExpression = this.parser.RULE("ifExpression", () => {
+    this.consumeTokenType(tokens.If);
+    this.consumeTokenType(tokens.LeftParen);
+    this.subrule(this.expression);
+    this.consumeTokenType(tokens.RightParen);
+    this.subrule(this.expression);
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Else);
+      this.subrule(this.expression);
+    });
+  });
+
+  // While expression
+  whileExpression = this.parser.RULE("whileExpression", () => {
+    this.consumeTokenType(tokens.While);
+    this.consumeTokenType(tokens.LeftParen);
+    this.subrule(this.expression);
+    this.consumeTokenType(tokens.RightParen);
+    this.subrule(this.expression);
+  });
+
+  // Try expression
+  tryExpression = this.parser.RULE("tryExpression", () => {
+    this.consumeTokenType(tokens.Try);
+    this.subrule(this.expression);
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Catch);
+      this.parser.OR([
+        // Pattern-based catch
+        {
+          ALT: () => {
+            this.consumeTokenType(tokens.LeftBrace);
+            this.parser.MANY(() => this.subrule(this.caseClause));
+            this.consumeTokenType(tokens.RightBrace);
+          },
+        },
+        // Expression-based catch
+        {
+          ALT: () => this.subrule(this.expression),
+        },
+      ]);
+    });
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.Finally);
+      this.subrule(this.expression);
+    });
+  });
+
+  // For expression/comprehension
+  forExpression = this.parser.RULE("forExpression", () => {
+    this.consumeTokenType(tokens.For);
+    this.parser.OR([
+      // For with parentheses
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.AT_LEAST_ONE_SEP({
+            SEP: tokens.Semicolon,
+            DEF: () => this.subrule(this.generator),
+          });
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+      // For with braces
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftBrace);
+          this.parser.MANY(() => this.subrule(this.generator));
+          this.consumeTokenType(tokens.RightBrace);
+        },
+      },
+    ]);
+    this.parser.OPTION(() => this.consumeTokenType(tokens.Yield));
+    this.subrule(this.expression);
+  });
+
+  // Helper rule dependencies (to be implemented in other modules)
+  polymorphicTypeParameter = this.parser.RULE(
+    "polymorphicTypeParameter",
+    () => {
+      // Placeholder - should be in types.ts
+      this.consumeTokenType(tokens.Identifier);
+    },
+  );
+
+  blockStatement = this.parser.RULE("blockStatement", () => {
+    // Placeholder - should be in statements.ts
+    this.subrule(this.expression);
+  });
+}

frontend/src/common/prettier/plugins/scala/scala-parser/parser/literals.ts

@@ -0,0 +1,126 @@
+/**
+ * Literal parsing module for all Scala literal types
+ */
+import { BaseParserModule, tokens } from "./base";
+
+// Module for literal parsing - no additional imports needed
+
+export class LiteralParserMixin extends BaseParserModule {
+  // Main literal rule
+  literal = this.parser.RULE("literal", () => {
+    this.parser.OR([
+      // Numeric literals
+      { ALT: () => this.consumeTokenType(tokens.IntegerLiteral) },
+      { ALT: () => this.consumeTokenType(tokens.FloatingPointLiteral) },
+      { ALT: () => this.consumeTokenType(tokens.ScientificNotationLiteral) },
+
+      // Boolean literals
+      { ALT: () => this.consumeTokenType(tokens.True) },
+      { ALT: () => this.consumeTokenType(tokens.False) },
+
+      // Character literal
+      { ALT: () => this.consumeTokenType(tokens.CharLiteral) },
+
+      // String literals
+      { ALT: () => this.consumeTokenType(tokens.StringLiteral) },
+      { ALT: () => this.consumeTokenType(tokens.InterpolatedStringLiteral) },
+
+      // Interpolated strings
+      { ALT: () => this.subrule(this.interpolatedString) },
+
+      // Null literal
+      { ALT: () => this.consumeTokenType(tokens.Null) },
+
+      // Unit literal ()
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftParen);
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+    ]);
+  });
+
+  // Interpolated string
+  interpolatedString = this.parser.RULE("interpolatedString", () => {
+    this.parser.OR([
+      // s-interpolator
+      { ALT: () => this.consumeTokenType(tokens.InterpolatedString) },
+      // f-interpolator
+      { ALT: () => this.consumeTokenType(tokens.FormattedString) },
+      // raw-interpolator
+      { ALT: () => this.consumeTokenType(tokens.RawString) },
+      // Custom interpolator
+      { ALT: () => this.consumeTokenType(tokens.CustomInterpolatedString) },
+    ]);
+  });
+
+  // Numeric literal with suffix
+  numericLiteral = this.parser.RULE("numericLiteral", () => {
+    this.parser.OR([
+      // Integer types
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.IntegerLiteral);
+          this.parser.OPTION(() => {
+            this.parser.OR([
+              { ALT: () => this.consumeTokenType(tokens.LongSuffix) },
+              { ALT: () => this.consumeTokenType(tokens.IntSuffix) },
+              { ALT: () => this.consumeTokenType(tokens.ShortSuffix) },
+              { ALT: () => this.consumeTokenType(tokens.ByteSuffix) },
+            ]);
+          });
+        },
+      },
+      // Floating point types
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.FloatingPointLiteral);
+          this.parser.OPTION(() => {
+            this.parser.OR([
+              { ALT: () => this.consumeTokenType(tokens.FloatSuffix) },
+              { ALT: () => this.consumeTokenType(tokens.DoubleSuffix) },
+            ]);
+          });
+        },
+      },
+    ]);
+  });
+
+  // XML literal (if XML support is needed)
+  xmlLiteral = this.parser.RULE("xmlLiteral", () => {
+    // Placeholder for XML literals
+    // This would require XML-specific lexing
+    this.consumeTokenType(tokens.StringLiteral);
+  });
+
+  // Collection literal patterns (syntactic sugar)
+  collectionLiteral = this.parser.RULE("collectionLiteral", () => {
+    this.parser.OR([
+      // List literal: List(1, 2, 3)
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.Identifier); // List, Set, etc.
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.MANY_SEP({
+            SEP: tokens.Comma,
+            DEF: () => this.subrule(this.literal),
+          });
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+      // Array literal: Array(1, 2, 3)
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.Array);
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.MANY_SEP({
+            SEP: tokens.Comma,
+            DEF: () => this.subrule(this.literal),
+          });
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+    ]);
+  });
+}

frontend/src/common/prettier/plugins/scala/scala-parser/parser/patterns.ts

@@ -0,0 +1,243 @@
+/**
+ * Pattern matching parsing module
+ */
+import { BaseParserModule, tokens } from "./base";
+import type { ParserMethod, CstNode } from "chevrotain";
+
+export class PatternParserMixin extends BaseParserModule {
+  // Dependencies from other modules
+  literal!: ParserMethod<unknown[], CstNode>;
+  qualifiedIdentifier!: ParserMethod<unknown[], CstNode>;
+  type!: ParserMethod<unknown[], CstNode>;
+  expression!: ParserMethod<unknown[], CstNode>;
+
+  // Pattern rule
+  pattern = this.parser.RULE("pattern", () => {
+    this.parser.OR([
+      // Wildcard pattern: _
+      { ALT: () => this.consumeTokenType(tokens.Underscore) },
+      // Literal pattern
+      { ALT: () => this.subrule(this.literal) },
+      // Variable pattern (lowercase identifier)
+      {
+        ALT: () => this.consumeTokenType(tokens.Identifier),
+        GATE: () => {
+          const la1 = this.parser.LA(1);
+          if (la1?.tokenType !== tokens.Identifier) return false;
+          const firstChar = la1.image[0];
+          return (
+            firstChar === firstChar.toLowerCase() &&
+            firstChar !== firstChar.toUpperCase()
+          );
+        },
+      },
+      // Stable identifier pattern (uppercase or qualified)
+      {
+        ALT: () => this.subrule(this.qualifiedIdentifier),
+      },
+      // Constructor pattern: Type(patterns...)
+      {
+        ALT: () => {
+          this.subrule(this.qualifiedIdentifier);
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.MANY_SEP({
+            SEP: tokens.Comma,
+            DEF: () => this.subrule(this.pattern),
+          });
+          this.consumeTokenType(tokens.RightParen);
+        },
+        GATE: () => {
+          // Look for Constructor(...)
+          let i = 1;
+          while (this.parser.LA(i)?.tokenType === tokens.Identifier) {
+            if (this.parser.LA(i + 1)?.tokenType === tokens.Dot) {
+              i += 2;
+            } else {
+              return this.parser.LA(i + 1)?.tokenType === tokens.LeftParen;
+            }
+          }
+          return false;
+        },
+      },
+      // Tuple pattern: (p1, p2, ...)
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.LeftParen);
+          this.parser.MANY_SEP({
+            SEP: tokens.Comma,
+            DEF: () => this.subrule(this.pattern),
+          });
+          this.consumeTokenType(tokens.RightParen);
+        },
+      },
+      // Typed pattern: pattern : Type
+      {
+        ALT: () => {
+          this.subrule(this.pattern);
+          this.consumeTokenType(tokens.Colon);
+          this.subrule(this.type);
+        },
+        GATE: () => {
+          // Complex lookahead for typed patterns
+          let i = 1;
+          let parenDepth = 0;
+          while (i < 20) {
+            const token = this.parser.LA(i);
+            if (!token) return false;
+            if (token.tokenType === tokens.LeftParen) parenDepth++;
+            if (token.tokenType === tokens.RightParen) parenDepth--;
+            if (parenDepth === 0 && token.tokenType === tokens.Colon) {
+              return true;
+            }
+            if (
+              parenDepth === 0 &&
+              (token.tokenType === tokens.Arrow ||
+                token.tokenType === tokens.Equals ||
+                token.tokenType === tokens.If)
+            ) {
+              return false;
+            }
+            i++;
+          }
+          return false;
+        },
+      },
+      // Alternative pattern: p1 | p2 | ...
+      {
+        ALT: () => {
+          this.subrule(this.pattern);
+          this.parser.MANY(() => {
+            this.consumeTokenType(tokens.BitwiseOr);
+            this.subrule(this.pattern);
+          });
+        },
+        GATE: () => {
+          // Look for | in patterns
+          let i = 1;
+          let parenDepth = 0;
+          while (i < 20) {
+            const token = this.parser.LA(i);
+            if (!token) return false;
+            if (token.tokenType === tokens.LeftParen) parenDepth++;
+            if (token.tokenType === tokens.RightParen) parenDepth--;
+            if (parenDepth === 0 && token.tokenType === tokens.BitwiseOr) {
+              return true;
+            }
+            if (
+              parenDepth === 0 &&
+              (token.tokenType === tokens.Arrow ||
+                token.tokenType === tokens.Equals)
+            ) {
+              return false;
+            }
+            i++;
+          }
+          return false;
+        },
+      },
+    ]);
+  });
+
+  // Case clause (used in match expressions and partial functions)
+  caseClause = this.parser.RULE("caseClause", () => {
+    this.consumeTokenType(tokens.Case);
+    this.subrule(this.pattern);
+
+    // Optional guard
+    this.parser.OPTION(() => {
+      this.consumeTokenType(tokens.If);
+      this.subrule(this.expression);
+    });
+
+    this.consumeTokenType(tokens.Arrow);
+
+    // Case body - can be expression or block
+    this.parser.OR([
+      // Block of statements
+      {
+        ALT: () => {
+          this.parser.MANY(() => {
+            this.subrule(this.expression);
+            this.parser.OPTION(() => this.consumeTokenType(tokens.Semicolon));
+          });
+        },
+        GATE: () => {
+          // If next token is 'case' or '}', this is the end
+          const la1 = this.parser.LA(1);
+          return (
+            la1?.tokenType !== tokens.Case &&
+            la1?.tokenType !== tokens.RightBrace
+          );
+        },
+      },
+      // Empty case (rare but valid)
+      { ALT: () => {} },
+    ]);
+  });
+
+  // Generator (used in for comprehensions)
+  generator = this.parser.RULE("generator", () => {
+    this.parser.OR([
+      // Pattern generator: pattern <- expression
+      {
+        ALT: () => {
+          this.subrule(this.pattern);
+          this.consumeTokenType(tokens.LeftArrow);
+          this.subrule(this.expression);
+        },
+      },
+      // Value definition: pattern = expression
+      {
+        ALT: () => {
+          this.subrule(this.pattern);
+          this.consumeTokenType(tokens.Equals);
+          this.subrule(this.expression);
+        },
+      },
+      // Guard: if expression
+      {
+        ALT: () => {
+          this.consumeTokenType(tokens.If);
+          this.subrule(this.expression);
+        },
+      },
+    ]);
+  });
+
+  // Extractor pattern (for advanced pattern matching)
+  extractorPattern = this.parser.RULE("extractorPattern", () => {
+    this.subrule(this.qualifiedIdentifier);
+    this.consumeTokenType(tokens.LeftParen);
+    this.parser.MANY_SEP({
+      SEP: tokens.Comma,
+      DEF: () => {
+        this.parser.OR([
+          // Regular pattern
+          { ALT: () => this.subrule(this.pattern) },
+          // Sequence pattern: _*
+          {
+            ALT: () => {
+              this.consumeTokenType(tokens.Underscore);
+              this.consumeTokenType(tokens.Star);
+            },
+          },
+        ]);
+      },
+    });
+    this.consumeTokenType(tokens.RightParen);
+  });
+
+  // Infix pattern (for pattern matching with infix operators)
+  infixPattern = this.parser.RULE("infixPattern", () => {
+    this.subrule(this.pattern);
+    this.consumeTokenType(tokens.Identifier);
+    this.subrule(this.pattern);
+  });
+
+  // XML pattern (if XML support is needed)
+  xmlPattern = this.parser.RULE("xmlPattern", () => {
+    // Placeholder for XML patterns
+    // This would require XML-specific tokens
+    this.consumeTokenType(tokens.StringLiteral);
+  });
+}