🐛 Fixed golang prettier plugin issue
This commit is contained in:
@@ -1,26 +1,53 @@
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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"use strict";
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//
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// This file has been modified for use by the TinyGo compiler.
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(() => {
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// Map multiple JavaScript environments to a single common API,
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// preferring web standards over Node.js API.
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//
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// Environments considered:
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// - Browsers
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// - Node.js
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// - Electron
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// - Parcel
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if (typeof global !== "undefined") {
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// global already exists
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} else if (typeof window !== "undefined") {
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window.global = window;
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} else if (typeof self !== "undefined") {
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self.global = self;
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} else {
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throw new Error("cannot export Go (neither global, window nor self is defined)");
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}
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if (!global.require && typeof require !== "undefined") {
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global.require = require;
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}
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if (!global.fs && global.require) {
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global.fs = require("node:fs");
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}
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const enosys = () => {
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const err = new Error("not implemented");
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err.code = "ENOSYS";
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return err;
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};
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if (!globalThis.fs) {
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if (!global.fs) {
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let outputBuf = "";
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globalThis.fs = {
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global.fs = {
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constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
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writeSync(fd, buf) {
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outputBuf += decoder.decode(buf);
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const nl = outputBuf.lastIndexOf("\n");
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if (nl != -1) {
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console.log(outputBuf.substring(0, nl));
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outputBuf = outputBuf.substring(nl + 1);
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console.log(outputBuf.substr(0, nl));
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outputBuf = outputBuf.substr(nl + 1);
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}
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return buf.length;
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},
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@@ -58,8 +85,8 @@
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};
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}
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if (!globalThis.process) {
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globalThis.process = {
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if (!global.process) {
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global.process = {
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getuid() { return -1; },
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getgid() { return -1; },
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geteuid() { return -1; },
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@@ -73,58 +100,53 @@
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}
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}
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if (!globalThis.crypto) {
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throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
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if (!global.crypto) {
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const nodeCrypto = require("node:crypto");
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global.crypto = {
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getRandomValues(b) {
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nodeCrypto.randomFillSync(b);
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},
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};
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}
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if (!globalThis.performance) {
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throw new Error("globalThis.performance is not available, polyfill required (performance.now only)");
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if (!global.performance) {
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global.performance = {
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now() {
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const [sec, nsec] = process.hrtime();
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return sec * 1000 + nsec / 1000000;
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},
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};
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}
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if (!globalThis.TextEncoder) {
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throw new Error("globalThis.TextEncoder is not available, polyfill required");
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if (!global.TextEncoder) {
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global.TextEncoder = require("node:util").TextEncoder;
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}
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if (!globalThis.TextDecoder) {
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throw new Error("globalThis.TextDecoder is not available, polyfill required");
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if (!global.TextDecoder) {
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global.TextDecoder = require("node:util").TextDecoder;
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}
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// End of polyfills for common API.
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const encoder = new TextEncoder("utf-8");
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const decoder = new TextDecoder("utf-8");
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let reinterpretBuf = new DataView(new ArrayBuffer(8));
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var logLine = [];
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const wasmExit = {}; // thrown to exit via proc_exit (not an error)
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globalThis.Go = class {
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global.TinyGo = class {
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constructor() {
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this.argv = ["js"];
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this.env = {};
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this.exit = (code) => {
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if (code !== 0) {
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console.warn("exit code:", code);
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}
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};
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this._exitPromise = new Promise((resolve) => {
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this._resolveExitPromise = resolve;
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});
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this._pendingEvent = null;
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this._scheduledTimeouts = new Map();
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this._callbackTimeouts = new Map();
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this._nextCallbackTimeoutID = 1;
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const setInt64 = (addr, v) => {
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this.mem.setUint32(addr + 0, v, true);
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this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
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const mem = () => {
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// The buffer may change when requesting more memory.
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return new DataView(this._inst.exports.memory.buffer);
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}
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const setInt32 = (addr, v) => {
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this.mem.setUint32(addr + 0, v, true);
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}
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const getInt64 = (addr) => {
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const low = this.mem.getUint32(addr + 0, true);
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const high = this.mem.getInt32(addr + 4, true);
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return low + high * 4294967296;
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}
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const loadValue = (addr) => {
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const f = this.mem.getFloat64(addr, true);
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const unboxValue = (v_ref) => {
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reinterpretBuf.setBigInt64(0, v_ref, true);
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const f = reinterpretBuf.getFloat64(0, true);
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if (f === 0) {
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return undefined;
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}
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@@ -132,69 +154,77 @@
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return f;
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}
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const id = this.mem.getUint32(addr, true);
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const id = v_ref & 0xffffffffn;
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return this._values[id];
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}
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const storeValue = (addr, v) => {
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const nanHead = 0x7FF80000;
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if (typeof v === "number" && v !== 0) {
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const loadValue = (addr) => {
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let v_ref = mem().getBigUint64(addr, true);
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return unboxValue(v_ref);
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}
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const boxValue = (v) => {
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const nanHead = 0x7FF80000n;
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if (typeof v === "number") {
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if (isNaN(v)) {
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this.mem.setUint32(addr + 4, nanHead, true);
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this.mem.setUint32(addr, 0, true);
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return;
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return nanHead << 32n;
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}
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this.mem.setFloat64(addr, v, true);
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return;
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if (v === 0) {
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return (nanHead << 32n) | 1n;
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}
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reinterpretBuf.setFloat64(0, v, true);
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return reinterpretBuf.getBigInt64(0, true);
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}
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if (v === undefined) {
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this.mem.setFloat64(addr, 0, true);
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return;
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switch (v) {
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case undefined:
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return 0n;
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case null:
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return (nanHead << 32n) | 2n;
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case true:
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return (nanHead << 32n) | 3n;
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case false:
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return (nanHead << 32n) | 4n;
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}
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let id = this._ids.get(v);
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if (id === undefined) {
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id = this._idPool.pop();
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if (id === undefined) {
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id = this._values.length;
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id = BigInt(this._values.length);
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}
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this._values[id] = v;
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this._goRefCounts[id] = 0;
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this._ids.set(v, id);
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}
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this._goRefCounts[id]++;
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let typeFlag = 0;
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let typeFlag = 1n;
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switch (typeof v) {
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case "object":
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if (v !== null) {
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typeFlag = 1;
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}
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break;
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case "string":
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typeFlag = 2;
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typeFlag = 2n;
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break;
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case "symbol":
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typeFlag = 3;
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typeFlag = 3n;
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break;
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case "function":
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typeFlag = 4;
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typeFlag = 4n;
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break;
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}
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this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
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this.mem.setUint32(addr, id, true);
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return id | ((nanHead | typeFlag) << 32n);
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}
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const loadSlice = (addr) => {
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const array = getInt64(addr + 0);
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const len = getInt64(addr + 8);
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return new Uint8Array(this._inst.exports.mem.buffer, array, len);
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const storeValue = (addr, v) => {
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let v_ref = boxValue(v);
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mem().setBigUint64(addr, v_ref, true);
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}
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const loadSliceOfValues = (addr) => {
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const array = getInt64(addr + 0);
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const len = getInt64(addr + 8);
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const loadSlice = (array, len, cap) => {
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return new Uint8Array(this._inst.exports.memory.buffer, array, len);
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}
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const loadSliceOfValues = (array, len, cap) => {
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const a = new Array(len);
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for (let i = 0; i < len; i++) {
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a[i] = loadValue(array + i * 8);
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@@ -202,347 +232,287 @@
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return a;
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}
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const loadString = (addr) => {
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const saddr = getInt64(addr + 0);
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const len = getInt64(addr + 8);
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return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
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const loadString = (ptr, len) => {
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return decoder.decode(new DataView(this._inst.exports.memory.buffer, ptr, len));
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}
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const timeOrigin = Date.now() - performance.now();
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this.importObject = {
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_gotest: {
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add: (a, b) => a + b,
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wasi_snapshot_preview1: {
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// https://github.com/WebAssembly/WASI/blob/main/phases/snapshot/docs.md#fd_write
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fd_write: function(fd, iovs_ptr, iovs_len, nwritten_ptr) {
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let nwritten = 0;
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if (fd == 1) {
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for (let iovs_i=0; iovs_i<iovs_len;iovs_i++) {
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let iov_ptr = iovs_ptr+iovs_i*8; // assuming wasm32
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let ptr = mem().getUint32(iov_ptr + 0, true);
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let len = mem().getUint32(iov_ptr + 4, true);
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nwritten += len;
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for (let i=0; i<len; i++) {
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let c = mem().getUint8(ptr+i);
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if (c == 13) { // CR
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// ignore
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} else if (c == 10) { // LF
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// write line
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let line = decoder.decode(new Uint8Array(logLine));
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logLine = [];
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console.log(line);
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} else {
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logLine.push(c);
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}
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}
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}
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} else {
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console.error('invalid file descriptor:', fd);
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}
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mem().setUint32(nwritten_ptr, nwritten, true);
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return 0;
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},
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fd_close: () => 0, // dummy
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fd_fdstat_get: () => 0, // dummy
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fd_seek: () => 0, // dummy
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proc_exit: (code) => {
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this.exited = true;
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this.exitCode = code;
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this._resolveExitPromise();
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throw wasmExit;
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},
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random_get: (bufPtr, bufLen) => {
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crypto.getRandomValues(loadSlice(bufPtr, bufLen));
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return 0;
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},
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},
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gojs: {
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// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters)
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// may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported
|
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// function. A goroutine can switch to a new stack if the current stack is too small (see morestack function).
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// This changes the SP, thus we have to update the SP used by the imported function.
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|
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// func wasmExit(code int32)
|
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"runtime.wasmExit": (sp) => {
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sp >>>= 0;
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const code = this.mem.getInt32(sp + 8, true);
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this.exited = true;
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delete this._inst;
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delete this._values;
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delete this._goRefCounts;
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delete this._ids;
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delete this._idPool;
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this.exit(code);
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// func ticks() int64
|
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"runtime.ticks": () => {
|
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return BigInt((timeOrigin + performance.now()) * 1e6);
|
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},
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|
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// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
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"runtime.wasmWrite": (sp) => {
|
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sp >>>= 0;
|
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const fd = getInt64(sp + 8);
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const p = getInt64(sp + 16);
|
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const n = this.mem.getInt32(sp + 24, true);
|
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fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
|
||||
},
|
||||
|
||||
// func resetMemoryDataView()
|
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"runtime.resetMemoryDataView": (sp) => {
|
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sp >>>= 0;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
},
|
||||
|
||||
// func nanotime1() int64
|
||||
"runtime.nanotime1": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
|
||||
},
|
||||
|
||||
// func walltime() (sec int64, nsec int32)
|
||||
"runtime.walltime": (sp) => {
|
||||
sp >>>= 0;
|
||||
const msec = (new Date).getTime();
|
||||
setInt64(sp + 8, msec / 1000);
|
||||
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
},
|
||||
|
||||
// func scheduleTimeoutEvent(delay int64) int32
|
||||
"runtime.scheduleTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this._nextCallbackTimeoutID;
|
||||
this._nextCallbackTimeoutID++;
|
||||
this._scheduledTimeouts.set(id, setTimeout(
|
||||
() => {
|
||||
this._resume();
|
||||
while (this._scheduledTimeouts.has(id)) {
|
||||
// for some reason Go failed to register the timeout event, log and try again
|
||||
// (temporary workaround for https://github.com/golang/go/issues/28975)
|
||||
console.warn("scheduleTimeoutEvent: missed timeout event");
|
||||
this._resume();
|
||||
}
|
||||
},
|
||||
getInt64(sp + 8),
|
||||
));
|
||||
this.mem.setInt32(sp + 16, id, true);
|
||||
},
|
||||
|
||||
// func clearTimeoutEvent(id int32)
|
||||
"runtime.clearTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getInt32(sp + 8, true);
|
||||
clearTimeout(this._scheduledTimeouts.get(id));
|
||||
this._scheduledTimeouts.delete(id);
|
||||
},
|
||||
|
||||
// func getRandomData(r []byte)
|
||||
"runtime.getRandomData": (sp) => {
|
||||
sp >>>= 0;
|
||||
crypto.getRandomValues(loadSlice(sp + 8));
|
||||
// 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": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getUint32(sp + 8, true);
|
||||
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);
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, loadString(sp + 8));
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16));
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 32, result);
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
|
||||
"syscall/js.valueIndex": (v_ref, i) => {
|
||||
return boxValue(Reflect.get(unboxValue(v_ref), i));
|
||||
},
|
||||
|
||||
// valueSetIndex(v ref, i int, x ref)
|
||||
"syscall/js.valueSetIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
"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 v = loadValue(sp + 8);
|
||||
const m = Reflect.get(v, loadString(sp + 16));
|
||||
const args = loadSliceOfValues(sp + 32);
|
||||
const result = Reflect.apply(m, v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, result);
|
||||
this.mem.setUint8(sp + 64, 1);
|
||||
const m = Reflect.get(v, name);
|
||||
storeValue(ret_addr, Reflect.apply(m, v, args));
|
||||
mem().setUint8(ret_addr + 8, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, err);
|
||||
this.mem.setUint8(sp + 64, 0);
|
||||
storeValue(ret_addr, err);
|
||||
mem().setUint8(ret_addr + 8, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueInvoke(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueInvoke": (sp) => {
|
||||
sp >>>= 0;
|
||||
"syscall/js.valueInvoke": (ret_addr, v_ref, args_ptr, args_len, args_cap) => {
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.apply(v, undefined, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
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) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
storeValue(ret_addr, err);
|
||||
mem().setUint8(ret_addr + 8, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueNew(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueNew": (sp) => {
|
||||
sp >>>= 0;
|
||||
"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 {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.construct(v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
storeValue(ret_addr, Reflect.construct(v, args));
|
||||
mem().setUint8(ret_addr + 8, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
storeValue(ret_addr, err);
|
||||
mem().setUint8(ret_addr+ 8, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueLength(v ref) int
|
||||
"syscall/js.valueLength": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
|
||||
"syscall/js.valueLength": (v_ref) => {
|
||||
return unboxValue(v_ref).length;
|
||||
},
|
||||
|
||||
// valuePrepareString(v ref) (ref, int)
|
||||
"syscall/js.valuePrepareString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = encoder.encode(String(loadValue(sp + 8)));
|
||||
storeValue(sp + 16, str);
|
||||
setInt64(sp + 24, str.length);
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = loadValue(sp + 8);
|
||||
loadSlice(sp + 16).set(str);
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
|
||||
"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": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadSlice(sp + 8);
|
||||
const src = loadValue(sp + 32);
|
||||
"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)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
mem().setUint8(returned_status_addr, 0); // Return "not ok" status
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
mem().setUint32(num_bytes_copied_addr, toCopy.length, true);
|
||||
mem().setUint8(returned_status_addr, 1); // Return "ok" status
|
||||
},
|
||||
|
||||
// func copyBytesToJS(dst ref, src []byte) (int, bool)
|
||||
"syscall/js.copyBytesToJS": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadValue(sp + 8);
|
||||
const src = loadSlice(sp + 16);
|
||||
// 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)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
mem().setUint8(returned_status_addr, 0); // Return "not ok" status
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
"debug": (value) => {
|
||||
console.log(value);
|
||||
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) {
|
||||
if (!(instance instanceof WebAssembly.Instance)) {
|
||||
throw new Error("Go.run: WebAssembly.Instance expected");
|
||||
}
|
||||
this._inst = instance;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
this._values = [ // JS values that Go currently has references to, indexed by reference id
|
||||
NaN,
|
||||
0,
|
||||
null,
|
||||
true,
|
||||
false,
|
||||
globalThis,
|
||||
global,
|
||||
this,
|
||||
];
|
||||
this._goRefCounts = new Array(this._values.length).fill(Infinity); // 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
|
||||
[0, 1],
|
||||
[null, 2],
|
||||
[true, 3],
|
||||
[false, 4],
|
||||
[globalThis, 5],
|
||||
[this, 6],
|
||||
]);
|
||||
this._idPool = []; // unused ids that have been garbage collected
|
||||
this.exited = false; // whether the Go program has exited
|
||||
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;
|
||||
|
||||
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
|
||||
let offset = 4096;
|
||||
if (this._inst.exports._start) {
|
||||
let exitPromise = new Promise((resolve, reject) => {
|
||||
this._resolveExitPromise = resolve;
|
||||
});
|
||||
|
||||
const strPtr = (str) => {
|
||||
const ptr = offset;
|
||||
const bytes = encoder.encode(str + "\0");
|
||||
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
|
||||
offset += bytes.length;
|
||||
if (offset % 8 !== 0) {
|
||||
offset += 8 - (offset % 8);
|
||||
// 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;
|
||||
}
|
||||
return ptr;
|
||||
};
|
||||
|
||||
const argc = this.argv.length;
|
||||
|
||||
const argvPtrs = [];
|
||||
this.argv.forEach((arg) => {
|
||||
argvPtrs.push(strPtr(arg));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const keys = Object.keys(this.env).sort();
|
||||
keys.forEach((key) => {
|
||||
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const argv = offset;
|
||||
argvPtrs.forEach((ptr) => {
|
||||
this.mem.setUint32(offset, ptr, true);
|
||||
this.mem.setUint32(offset + 4, 0, true);
|
||||
offset += 8;
|
||||
});
|
||||
|
||||
// The linker guarantees global data starts from at least wasmMinDataAddr.
|
||||
// Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr.
|
||||
const wasmMinDataAddr = 4096 + 8192;
|
||||
if (offset >= wasmMinDataAddr) {
|
||||
throw new Error("total length of command line and environment variables exceeds limit");
|
||||
await exitPromise;
|
||||
return this.exitCode;
|
||||
} else {
|
||||
this._inst.exports._initialize();
|
||||
}
|
||||
|
||||
this._inst.exports.run(argc, argv);
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
await this._exitPromise;
|
||||
}
|
||||
|
||||
_resume() {
|
||||
if (this.exited) {
|
||||
throw new Error("Go program has already exited");
|
||||
}
|
||||
this._inst.exports.resume();
|
||||
try {
|
||||
this._inst.exports.resume();
|
||||
} catch (e) {
|
||||
if (e !== wasmExit) throw e;
|
||||
}
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
@@ -558,4 +528,26 @@
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
});
|
||||
}
|
||||
})();
|
||||
|
||||
Reference in New Issue
Block a user