528 lines
17 KiB
TypeScript
528 lines
17 KiB
TypeScript
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import type * as ts from 'typescript';
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import * as lazy from 'lazy.js';
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import { duplex, through } from 'event-stream';
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import * as File from 'vinyl';
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import * as sm from 'source-map';
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import * as path from 'path';
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import * as sort from 'gulp-sort';
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declare class FileSourceMap extends File {
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public sourceMap: sm.RawSourceMap;
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}
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enum CollectStepResult {
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Yes,
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YesAndRecurse,
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No,
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NoAndRecurse
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}
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function collect(ts: typeof import('typescript'), node: ts.Node, fn: (node: ts.Node) => CollectStepResult): ts.Node[] {
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const result: ts.Node[] = [];
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function loop(node: ts.Node) {
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const stepResult = fn(node);
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if (stepResult === CollectStepResult.Yes || stepResult === CollectStepResult.YesAndRecurse) {
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result.push(node);
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}
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if (stepResult === CollectStepResult.YesAndRecurse || stepResult === CollectStepResult.NoAndRecurse) {
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ts.forEachChild(node, loop);
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}
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}
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loop(node);
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return result;
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}
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function clone<T extends object>(object: T): T {
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const result = {} as any as T;
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for (const id in object) {
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result[id] = object[id];
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}
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return result;
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}
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/**
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* Returns a stream containing the patched JavaScript and source maps.
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*/
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export function nls(options: { preserveEnglish: boolean }): NodeJS.ReadWriteStream {
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let base: string;
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const input = through();
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const output = input
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.pipe(sort()) // IMPORTANT: to ensure stable NLS metadata generation, we must sort the files because NLS messages are globally extracted and indexed across all files
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.pipe(through(function (f: FileSourceMap) {
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if (!f.sourceMap) {
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return this.emit('error', new Error(`File ${f.relative} does not have sourcemaps.`));
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}
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let source = f.sourceMap.sources[0];
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if (!source) {
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return this.emit('error', new Error(`File ${f.relative} does not have a source in the source map.`));
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}
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const root = f.sourceMap.sourceRoot;
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if (root) {
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source = path.join(root, source);
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}
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const typescript = f.sourceMap.sourcesContent![0];
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if (!typescript) {
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return this.emit('error', new Error(`File ${f.relative} does not have the original content in the source map.`));
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}
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base = f.base;
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this.emit('data', _nls.patchFile(f, typescript, options));
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}, function () {
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for (const file of [
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new File({
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contents: Buffer.from(JSON.stringify({
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keys: _nls.moduleToNLSKeys,
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messages: _nls.moduleToNLSMessages,
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}, null, '\t')),
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base,
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path: `${base}/nls.metadata.json`
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}),
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new File({
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contents: Buffer.from(JSON.stringify(_nls.allNLSMessages)),
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base,
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path: `${base}/nls.messages.json`
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}),
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new File({
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contents: Buffer.from(JSON.stringify(_nls.allNLSModulesAndKeys)),
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base,
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path: `${base}/nls.keys.json`
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}),
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new File({
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contents: Buffer.from(`/*---------------------------------------------------------
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* Copyright (C) Microsoft Corporation. All rights reserved.
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*--------------------------------------------------------*/
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globalThis._VSCODE_NLS_MESSAGES=${JSON.stringify(_nls.allNLSMessages)};`),
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base,
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path: `${base}/nls.messages.js`
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})
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]) {
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this.emit('data', file);
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}
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this.emit('end');
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}));
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return duplex(input, output);
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}
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function isImportNode(ts: typeof import('typescript'), node: ts.Node): boolean {
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return node.kind === ts.SyntaxKind.ImportDeclaration || node.kind === ts.SyntaxKind.ImportEqualsDeclaration;
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}
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module _nls {
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export const moduleToNLSKeys: { [name: string /* module ID */]: ILocalizeKey[] /* keys */ } = {};
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export const moduleToNLSMessages: { [name: string /* module ID */]: string[] /* messages */ } = {};
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export const allNLSMessages: string[] = [];
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export const allNLSModulesAndKeys: Array<[string /* module ID */, string[] /* keys */]> = [];
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let allNLSMessagesIndex = 0;
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type ILocalizeKey = string | { key: string }; // key might contain metadata for translators and then is not just a string
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interface INlsPatchResult {
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javascript: string;
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sourcemap: sm.RawSourceMap;
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nlsMessages?: string[];
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nlsKeys?: ILocalizeKey[];
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}
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interface ISpan {
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start: ts.LineAndCharacter;
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end: ts.LineAndCharacter;
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}
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interface ILocalizeCall {
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keySpan: ISpan;
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key: string;
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valueSpan: ISpan;
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value: string;
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}
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interface ILocalizeAnalysisResult {
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localizeCalls: ILocalizeCall[];
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}
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interface IPatch {
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span: ISpan;
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content: string;
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}
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function fileFrom(file: File, contents: string, path: string = file.path) {
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return new File({
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contents: Buffer.from(contents),
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base: file.base,
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cwd: file.cwd,
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path: path
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});
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}
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function mappedPositionFrom(source: string, lc: ts.LineAndCharacter): sm.MappedPosition {
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return { source, line: lc.line + 1, column: lc.character };
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}
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function lcFrom(position: sm.Position): ts.LineAndCharacter {
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return { line: position.line - 1, character: position.column };
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}
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class SingleFileServiceHost implements ts.LanguageServiceHost {
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private file: ts.IScriptSnapshot;
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private lib: ts.IScriptSnapshot;
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constructor(ts: typeof import('typescript'), private options: ts.CompilerOptions, private filename: string, contents: string) {
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this.file = ts.ScriptSnapshot.fromString(contents);
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this.lib = ts.ScriptSnapshot.fromString('');
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}
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getCompilationSettings = () => this.options;
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getScriptFileNames = () => [this.filename];
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getScriptVersion = () => '1';
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getScriptSnapshot = (name: string) => name === this.filename ? this.file : this.lib;
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getCurrentDirectory = () => '';
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getDefaultLibFileName = () => 'lib.d.ts';
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readFile(path: string, _encoding?: string): string | undefined {
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if (path === this.filename) {
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return this.file.getText(0, this.file.getLength());
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}
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return undefined;
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}
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fileExists(path: string): boolean {
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return path === this.filename;
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}
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}
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function isCallExpressionWithinTextSpanCollectStep(ts: typeof import('typescript'), textSpan: ts.TextSpan, node: ts.Node): CollectStepResult {
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if (!ts.textSpanContainsTextSpan({ start: node.pos, length: node.end - node.pos }, textSpan)) {
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return CollectStepResult.No;
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}
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return node.kind === ts.SyntaxKind.CallExpression ? CollectStepResult.YesAndRecurse : CollectStepResult.NoAndRecurse;
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}
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function analyze(
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ts: typeof import('typescript'),
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contents: string,
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functionName: 'localize' | 'localize2',
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options: ts.CompilerOptions = {}
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): ILocalizeAnalysisResult {
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const filename = 'file.ts';
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const serviceHost = new SingleFileServiceHost(ts, Object.assign(clone(options), { noResolve: true }), filename, contents);
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const service = ts.createLanguageService(serviceHost);
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const sourceFile = ts.createSourceFile(filename, contents, ts.ScriptTarget.ES5, true);
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// all imports
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const imports = lazy(collect(ts, sourceFile, n => isImportNode(ts, n) ? CollectStepResult.YesAndRecurse : CollectStepResult.NoAndRecurse));
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// import nls = require('vs/nls');
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const importEqualsDeclarations = imports
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.filter(n => n.kind === ts.SyntaxKind.ImportEqualsDeclaration)
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.map(n => <ts.ImportEqualsDeclaration>n)
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.filter(d => d.moduleReference.kind === ts.SyntaxKind.ExternalModuleReference)
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.filter(d => (<ts.ExternalModuleReference>d.moduleReference).expression.getText().endsWith(`/nls.js'`));
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// import ... from 'vs/nls';
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const importDeclarations = imports
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.filter(n => n.kind === ts.SyntaxKind.ImportDeclaration)
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.map(n => <ts.ImportDeclaration>n)
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.filter(d => d.moduleSpecifier.kind === ts.SyntaxKind.StringLiteral)
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.filter(d => d.moduleSpecifier.getText().endsWith(`/nls.js'`))
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.filter(d => !!d.importClause && !!d.importClause.namedBindings);
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// `nls.localize(...)` calls
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const nlsLocalizeCallExpressions = importDeclarations
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.filter(d => !!(d.importClause && d.importClause.namedBindings && d.importClause.namedBindings.kind === ts.SyntaxKind.NamespaceImport))
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.map(d => (<ts.NamespaceImport>d.importClause!.namedBindings).name)
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.concat(importEqualsDeclarations.map(d => d.name))
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// find read-only references to `nls`
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.map(n => service.getReferencesAtPosition(filename, n.pos + 1))
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.flatten()
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.filter(r => !r.isWriteAccess)
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// find the deepest call expressions AST nodes that contain those references
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.map(r => collect(ts, sourceFile, n => isCallExpressionWithinTextSpanCollectStep(ts, r.textSpan, n)))
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.map(a => lazy(a).last())
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.filter(n => !!n)
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.map(n => <ts.CallExpression>n)
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// only `localize` calls
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.filter(n => n.expression.kind === ts.SyntaxKind.PropertyAccessExpression && (<ts.PropertyAccessExpression>n.expression).name.getText() === functionName);
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// `localize` named imports
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const allLocalizeImportDeclarations = importDeclarations
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.filter(d => !!(d.importClause && d.importClause.namedBindings && d.importClause.namedBindings.kind === ts.SyntaxKind.NamedImports))
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.map(d => ([] as any[]).concat((<ts.NamedImports>d.importClause!.namedBindings!).elements))
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.flatten();
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// `localize` read-only references
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const localizeReferences = allLocalizeImportDeclarations
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.filter(d => d.name.getText() === functionName)
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.map(n => service.getReferencesAtPosition(filename, n.pos + 1))
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.flatten()
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.filter(r => !r.isWriteAccess);
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// custom named `localize` read-only references
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const namedLocalizeReferences = allLocalizeImportDeclarations
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.filter(d => d.propertyName && d.propertyName.getText() === functionName)
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.map(n => service.getReferencesAtPosition(filename, n.name.pos + 1))
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.flatten()
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.filter(r => !r.isWriteAccess);
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// find the deepest call expressions AST nodes that contain those references
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const localizeCallExpressions = localizeReferences
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.concat(namedLocalizeReferences)
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.map(r => collect(ts, sourceFile, n => isCallExpressionWithinTextSpanCollectStep(ts, r.textSpan, n)))
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.map(a => lazy(a).last())
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.filter(n => !!n)
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.map(n => <ts.CallExpression>n);
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// collect everything
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const localizeCalls = nlsLocalizeCallExpressions
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.concat(localizeCallExpressions)
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.map(e => e.arguments)
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.filter(a => a.length > 1)
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.sort((a, b) => a[0].getStart() - b[0].getStart())
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.map<ILocalizeCall>(a => ({
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keySpan: { start: ts.getLineAndCharacterOfPosition(sourceFile, a[0].getStart()), end: ts.getLineAndCharacterOfPosition(sourceFile, a[0].getEnd()) },
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key: a[0].getText(),
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valueSpan: { start: ts.getLineAndCharacterOfPosition(sourceFile, a[1].getStart()), end: ts.getLineAndCharacterOfPosition(sourceFile, a[1].getEnd()) },
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value: a[1].getText()
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}));
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return {
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localizeCalls: localizeCalls.toArray()
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};
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}
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class TextModel {
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private lines: string[];
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private lineEndings: string[];
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constructor(contents: string) {
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const regex = /\r\n|\r|\n/g;
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let index = 0;
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let match: RegExpExecArray | null;
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this.lines = [];
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this.lineEndings = [];
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while (match = regex.exec(contents)) {
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this.lines.push(contents.substring(index, match.index));
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this.lineEndings.push(match[0]);
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index = regex.lastIndex;
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}
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if (contents.length > 0) {
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this.lines.push(contents.substring(index, contents.length));
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this.lineEndings.push('');
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}
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}
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public get(index: number): string {
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return this.lines[index];
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}
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public set(index: number, line: string): void {
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this.lines[index] = line;
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}
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public get lineCount(): number {
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return this.lines.length;
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}
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/**
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* Applies patch(es) to the model.
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* Multiple patches must be ordered.
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* Does not support patches spanning multiple lines.
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*/
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public apply(patch: IPatch): void {
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const startLineNumber = patch.span.start.line;
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const endLineNumber = patch.span.end.line;
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const startLine = this.lines[startLineNumber] || '';
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const endLine = this.lines[endLineNumber] || '';
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this.lines[startLineNumber] = [
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startLine.substring(0, patch.span.start.character),
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patch.content,
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endLine.substring(patch.span.end.character)
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].join('');
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for (let i = startLineNumber + 1; i <= endLineNumber; i++) {
|
||
|
|
this.lines[i] = '';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public toString(): string {
|
||
|
|
return lazy(this.lines).zip(this.lineEndings)
|
||
|
|
.flatten().toArray().join('');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function patchJavascript(patches: IPatch[], contents: string): string {
|
||
|
|
const model = new TextModel(contents);
|
||
|
|
|
||
|
|
// patch the localize calls
|
||
|
|
lazy(patches).reverse().each(p => model.apply(p));
|
||
|
|
|
||
|
|
return model.toString();
|
||
|
|
}
|
||
|
|
|
||
|
|
function patchSourcemap(patches: IPatch[], rsm: sm.RawSourceMap, smc: sm.SourceMapConsumer): sm.RawSourceMap {
|
||
|
|
const smg = new sm.SourceMapGenerator({
|
||
|
|
file: rsm.file,
|
||
|
|
sourceRoot: rsm.sourceRoot
|
||
|
|
});
|
||
|
|
|
||
|
|
patches = patches.reverse();
|
||
|
|
let currentLine = -1;
|
||
|
|
let currentLineDiff = 0;
|
||
|
|
let source: string | null = null;
|
||
|
|
|
||
|
|
smc.eachMapping(m => {
|
||
|
|
const patch = patches[patches.length - 1];
|
||
|
|
const original = { line: m.originalLine, column: m.originalColumn };
|
||
|
|
const generated = { line: m.generatedLine, column: m.generatedColumn };
|
||
|
|
|
||
|
|
if (currentLine !== generated.line) {
|
||
|
|
currentLineDiff = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
currentLine = generated.line;
|
||
|
|
generated.column += currentLineDiff;
|
||
|
|
|
||
|
|
if (patch && m.generatedLine - 1 === patch.span.end.line && m.generatedColumn === patch.span.end.character) {
|
||
|
|
const originalLength = patch.span.end.character - patch.span.start.character;
|
||
|
|
const modifiedLength = patch.content.length;
|
||
|
|
const lengthDiff = modifiedLength - originalLength;
|
||
|
|
currentLineDiff += lengthDiff;
|
||
|
|
generated.column += lengthDiff;
|
||
|
|
|
||
|
|
patches.pop();
|
||
|
|
}
|
||
|
|
|
||
|
|
source = rsm.sourceRoot ? path.relative(rsm.sourceRoot, m.source) : m.source;
|
||
|
|
source = source.replace(/\\/g, '/');
|
||
|
|
smg.addMapping({ source, name: m.name, original, generated });
|
||
|
|
}, null, sm.SourceMapConsumer.GENERATED_ORDER);
|
||
|
|
|
||
|
|
if (source) {
|
||
|
|
smg.setSourceContent(source, smc.sourceContentFor(source));
|
||
|
|
}
|
||
|
|
|
||
|
|
return JSON.parse(smg.toString());
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseLocalizeKeyOrValue(sourceExpression: string) {
|
||
|
|
// sourceValue can be "foo", 'foo', `foo` or { .... }
|
||
|
|
// in its evalulated form
|
||
|
|
// we want to return either the string or the object
|
||
|
|
// eslint-disable-next-line no-eval
|
||
|
|
return eval(`(${sourceExpression})`);
|
||
|
|
}
|
||
|
|
|
||
|
|
function patch(ts: typeof import('typescript'), typescript: string, javascript: string, sourcemap: sm.RawSourceMap, options: { preserveEnglish: boolean }): INlsPatchResult {
|
||
|
|
const { localizeCalls } = analyze(ts, typescript, 'localize');
|
||
|
|
const { localizeCalls: localize2Calls } = analyze(ts, typescript, 'localize2');
|
||
|
|
|
||
|
|
if (localizeCalls.length === 0 && localize2Calls.length === 0) {
|
||
|
|
return { javascript, sourcemap };
|
||
|
|
}
|
||
|
|
|
||
|
|
const nlsKeys = localizeCalls.map(lc => parseLocalizeKeyOrValue(lc.key)).concat(localize2Calls.map(lc => parseLocalizeKeyOrValue(lc.key)));
|
||
|
|
const nlsMessages = localizeCalls.map(lc => parseLocalizeKeyOrValue(lc.value)).concat(localize2Calls.map(lc => parseLocalizeKeyOrValue(lc.value)));
|
||
|
|
const smc = new sm.SourceMapConsumer(sourcemap);
|
||
|
|
const positionFrom = mappedPositionFrom.bind(null, sourcemap.sources[0]);
|
||
|
|
|
||
|
|
// build patches
|
||
|
|
const toPatch = (c: { range: ISpan; content: string }): IPatch => {
|
||
|
|
const start = lcFrom(smc.generatedPositionFor(positionFrom(c.range.start)));
|
||
|
|
const end = lcFrom(smc.generatedPositionFor(positionFrom(c.range.end)));
|
||
|
|
return { span: { start, end }, content: c.content };
|
||
|
|
};
|
||
|
|
|
||
|
|
const localizePatches = lazy(localizeCalls)
|
||
|
|
.map(lc => (
|
||
|
|
options.preserveEnglish ? [
|
||
|
|
{ range: lc.keySpan, content: `${allNLSMessagesIndex++}` } // localize('key', "message") => localize(<index>, "message")
|
||
|
|
] : [
|
||
|
|
{ range: lc.keySpan, content: `${allNLSMessagesIndex++}` }, // localize('key', "message") => localize(<index>, null)
|
||
|
|
{ range: lc.valueSpan, content: 'null' }
|
||
|
|
]))
|
||
|
|
.flatten()
|
||
|
|
.map(toPatch);
|
||
|
|
|
||
|
|
const localize2Patches = lazy(localize2Calls)
|
||
|
|
.map(lc => (
|
||
|
|
{ range: lc.keySpan, content: `${allNLSMessagesIndex++}` } // localize2('key', "message") => localize(<index>, "message")
|
||
|
|
))
|
||
|
|
.map(toPatch);
|
||
|
|
|
||
|
|
// Sort patches by their start position
|
||
|
|
const patches = localizePatches.concat(localize2Patches).toArray().sort((a, b) => {
|
||
|
|
if (a.span.start.line < b.span.start.line) {
|
||
|
|
return -1;
|
||
|
|
} else if (a.span.start.line > b.span.start.line) {
|
||
|
|
return 1;
|
||
|
|
} else if (a.span.start.character < b.span.start.character) {
|
||
|
|
return -1;
|
||
|
|
} else if (a.span.start.character > b.span.start.character) {
|
||
|
|
return 1;
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
javascript = patchJavascript(patches, javascript);
|
||
|
|
|
||
|
|
sourcemap = patchSourcemap(patches, sourcemap, smc);
|
||
|
|
|
||
|
|
return { javascript, sourcemap, nlsKeys, nlsMessages };
|
||
|
|
}
|
||
|
|
|
||
|
|
export function patchFile(javascriptFile: File, typescript: string, options: { preserveEnglish: boolean }): File {
|
||
|
|
const ts = require('typescript') as typeof import('typescript');
|
||
|
|
// hack?
|
||
|
|
const moduleId = javascriptFile.relative
|
||
|
|
.replace(/\.js$/, '')
|
||
|
|
.replace(/\\/g, '/');
|
||
|
|
|
||
|
|
const { javascript, sourcemap, nlsKeys, nlsMessages } = patch(
|
||
|
|
ts,
|
||
|
|
typescript,
|
||
|
|
javascriptFile.contents.toString(),
|
||
|
|
(<any>javascriptFile).sourceMap,
|
||
|
|
options
|
||
|
|
);
|
||
|
|
|
||
|
|
const result = fileFrom(javascriptFile, javascript);
|
||
|
|
(<any>result).sourceMap = sourcemap;
|
||
|
|
|
||
|
|
if (nlsKeys) {
|
||
|
|
moduleToNLSKeys[moduleId] = nlsKeys;
|
||
|
|
allNLSModulesAndKeys.push([moduleId, nlsKeys.map(nlsKey => typeof nlsKey === 'string' ? nlsKey : nlsKey.key)]);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nlsMessages) {
|
||
|
|
moduleToNLSMessages[moduleId] = nlsMessages;
|
||
|
|
allNLSMessages.push(...nlsMessages);
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
}
|