✨ Improve code block function

frontend/src/views/editor/extensions/codeblock/lang-parser/codeblock-lang.ts

@@ -0,0 +1,65 @@
+/**
+ * 代码块语言支持
+ * 提供多语言代码块支持
+ */
+
+import { parser } from "./parser.js";
+import { configureNesting } from "./nested-parser";
+
+import {
+  LRLanguage,
+  LanguageSupport,
+  foldNodeProp,
+} from "@codemirror/language";
+import { styleTags, tags as t } from "@lezer/highlight";
+
+import { json } from "@codemirror/lang-json";
+
+/**
+ * 折叠节点函数
+ */
+function foldNode(node: any) {
+  return { from: node.from, to: node.to - 1 };
+}
+
+/**
+ * 代码块语言定义
+ */
+export const CodeBlockLanguage = LRLanguage.define({
+  parser: parser.configure({
+    props: [
+      styleTags({
+        BlockDelimiter: t.tagName,
+      }),
+
+      foldNodeProp.add({
+        BlockContent(node: any) {
+          return { from: node.from, to: node.to - 1 };
+        },
+      }),
+    ],
+    wrap: configureNesting(),
+  }),
+  languageData: {
+    commentTokens: { line: ";" }
+  }
+});
+
+/**
+ * 创建代码块语言支持
+ */
+export function codeBlockLang() {
+  let wrap = configureNesting();
+  let lang = CodeBlockLanguage.configure({ dialect: "", wrap: wrap });
+  
+  return [
+    new LanguageSupport(lang, [json().support]),
+  ];
+}
+
+/**
+ * 获取代码块语言扩展
+ */
+export function getCodeBlockLanguageExtension() {
+  return codeBlockLang();
+}