496 lines
16 KiB
TypeScript
496 lines
16 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
|
* Licensed under the MIT License. See License.txt in the project root for license information.
|
|
*--------------------------------------------------------------------------------------------*/
|
|
|
|
import type * as ts from 'typescript';
|
|
import * as lazy from 'lazy.js';
|
|
import { duplex, through } from 'event-stream';
|
|
import * as File from 'vinyl';
|
|
import * as sm from 'source-map';
|
|
import * as path from 'path';
|
|
|
|
declare class FileSourceMap extends File {
|
|
public sourceMap: sm.RawSourceMap;
|
|
}
|
|
|
|
enum CollectStepResult {
|
|
Yes,
|
|
YesAndRecurse,
|
|
No,
|
|
NoAndRecurse
|
|
}
|
|
|
|
function collect(ts: typeof import('typescript'), node: ts.Node, fn: (node: ts.Node) => CollectStepResult): ts.Node[] {
|
|
const result: ts.Node[] = [];
|
|
|
|
function loop(node: ts.Node) {
|
|
const stepResult = fn(node);
|
|
|
|
if (stepResult === CollectStepResult.Yes || stepResult === CollectStepResult.YesAndRecurse) {
|
|
result.push(node);
|
|
}
|
|
|
|
if (stepResult === CollectStepResult.YesAndRecurse || stepResult === CollectStepResult.NoAndRecurse) {
|
|
ts.forEachChild(node, loop);
|
|
}
|
|
}
|
|
|
|
loop(node);
|
|
return result;
|
|
}
|
|
|
|
function clone<T extends object>(object: T): T {
|
|
const result = <T>{};
|
|
for (const id in object) {
|
|
result[id] = object[id];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function template(lines: string[]): string {
|
|
let indent = '', wrap = '';
|
|
|
|
if (lines.length > 1) {
|
|
indent = '\t';
|
|
wrap = '\n';
|
|
}
|
|
|
|
return `/*---------------------------------------------------------
|
|
* Copyright (C) Microsoft Corporation. All rights reserved.
|
|
*--------------------------------------------------------*/
|
|
define([], [${wrap + lines.map(l => indent + l).join(',\n') + wrap}]);`;
|
|
}
|
|
|
|
/**
|
|
* Returns a stream containing the patched JavaScript and source maps.
|
|
*/
|
|
export function nls(): NodeJS.ReadWriteStream {
|
|
const input = through();
|
|
const output = input.pipe(through(function (f: FileSourceMap) {
|
|
if (!f.sourceMap) {
|
|
return this.emit('error', new Error(`File ${f.relative} does not have sourcemaps.`));
|
|
}
|
|
|
|
let source = f.sourceMap.sources[0];
|
|
if (!source) {
|
|
return this.emit('error', new Error(`File ${f.relative} does not have a source in the source map.`));
|
|
}
|
|
|
|
const root = f.sourceMap.sourceRoot;
|
|
if (root) {
|
|
source = path.join(root, source);
|
|
}
|
|
|
|
const typescript = f.sourceMap.sourcesContent![0];
|
|
if (!typescript) {
|
|
return this.emit('error', new Error(`File ${f.relative} does not have the original content in the source map.`));
|
|
}
|
|
|
|
_nls.patchFiles(f, typescript).forEach(f => this.emit('data', f));
|
|
}));
|
|
|
|
return duplex(input, output);
|
|
}
|
|
|
|
function isImportNode(ts: typeof import('typescript'), node: ts.Node): boolean {
|
|
return node.kind === ts.SyntaxKind.ImportDeclaration || node.kind === ts.SyntaxKind.ImportEqualsDeclaration;
|
|
}
|
|
|
|
module _nls {
|
|
|
|
interface INlsStringResult {
|
|
javascript: string;
|
|
sourcemap: sm.RawSourceMap;
|
|
nls?: string;
|
|
nlsKeys?: string;
|
|
}
|
|
|
|
interface ISpan {
|
|
start: ts.LineAndCharacter;
|
|
end: ts.LineAndCharacter;
|
|
}
|
|
|
|
interface ILocalizeCall {
|
|
keySpan: ISpan;
|
|
key: string;
|
|
valueSpan: ISpan;
|
|
value: string;
|
|
}
|
|
|
|
interface ILocalizeAnalysisResult {
|
|
localizeCalls: ILocalizeCall[];
|
|
nlsExpressions: ISpan[];
|
|
}
|
|
|
|
interface IPatch {
|
|
span: ISpan;
|
|
content: string;
|
|
}
|
|
|
|
function fileFrom(file: File, contents: string, path: string = file.path) {
|
|
return new File({
|
|
contents: Buffer.from(contents),
|
|
base: file.base,
|
|
cwd: file.cwd,
|
|
path: path
|
|
});
|
|
}
|
|
|
|
function mappedPositionFrom(source: string, lc: ts.LineAndCharacter): sm.MappedPosition {
|
|
return { source, line: lc.line + 1, column: lc.character };
|
|
}
|
|
|
|
function lcFrom(position: sm.Position): ts.LineAndCharacter {
|
|
return { line: position.line - 1, character: position.column };
|
|
}
|
|
|
|
class SingleFileServiceHost implements ts.LanguageServiceHost {
|
|
|
|
private file: ts.IScriptSnapshot;
|
|
private lib: ts.IScriptSnapshot;
|
|
|
|
constructor(ts: typeof import('typescript'), private options: ts.CompilerOptions, private filename: string, contents: string) {
|
|
this.file = ts.ScriptSnapshot.fromString(contents);
|
|
this.lib = ts.ScriptSnapshot.fromString('');
|
|
}
|
|
|
|
getCompilationSettings = () => this.options;
|
|
getScriptFileNames = () => [this.filename];
|
|
getScriptVersion = () => '1';
|
|
getScriptSnapshot = (name: string) => name === this.filename ? this.file : this.lib;
|
|
getCurrentDirectory = () => '';
|
|
getDefaultLibFileName = () => 'lib.d.ts';
|
|
|
|
readFile(path: string, _encoding?: string): string | undefined {
|
|
if (path === this.filename) {
|
|
return this.file.getText(0, this.file.getLength());
|
|
}
|
|
return undefined;
|
|
}
|
|
fileExists(path: string): boolean {
|
|
return path === this.filename;
|
|
}
|
|
}
|
|
|
|
function isCallExpressionWithinTextSpanCollectStep(ts: typeof import('typescript'), textSpan: ts.TextSpan, node: ts.Node): CollectStepResult {
|
|
if (!ts.textSpanContainsTextSpan({ start: node.pos, length: node.end - node.pos }, textSpan)) {
|
|
return CollectStepResult.No;
|
|
}
|
|
|
|
return node.kind === ts.SyntaxKind.CallExpression ? CollectStepResult.YesAndRecurse : CollectStepResult.NoAndRecurse;
|
|
}
|
|
|
|
function analyze(
|
|
ts: typeof import('typescript'),
|
|
contents: string,
|
|
functionName: 'localize' | 'localize2',
|
|
options: ts.CompilerOptions = {}
|
|
): ILocalizeAnalysisResult {
|
|
const filename = 'file.ts';
|
|
const serviceHost = new SingleFileServiceHost(ts, Object.assign(clone(options), { noResolve: true }), filename, contents);
|
|
const service = ts.createLanguageService(serviceHost);
|
|
const sourceFile = ts.createSourceFile(filename, contents, ts.ScriptTarget.ES5, true);
|
|
|
|
// all imports
|
|
const imports = lazy(collect(ts, sourceFile, n => isImportNode(ts, n) ? CollectStepResult.YesAndRecurse : CollectStepResult.NoAndRecurse));
|
|
|
|
// import nls = require('vs/nls');
|
|
const importEqualsDeclarations = imports
|
|
.filter(n => n.kind === ts.SyntaxKind.ImportEqualsDeclaration)
|
|
.map(n => <ts.ImportEqualsDeclaration>n)
|
|
.filter(d => d.moduleReference.kind === ts.SyntaxKind.ExternalModuleReference)
|
|
.filter(d => (<ts.ExternalModuleReference>d.moduleReference).expression.getText() === '\'vs/nls\'');
|
|
|
|
// import ... from 'vs/nls';
|
|
const importDeclarations = imports
|
|
.filter(n => n.kind === ts.SyntaxKind.ImportDeclaration)
|
|
.map(n => <ts.ImportDeclaration>n)
|
|
.filter(d => d.moduleSpecifier.kind === ts.SyntaxKind.StringLiteral)
|
|
.filter(d => d.moduleSpecifier.getText() === '\'vs/nls\'')
|
|
.filter(d => !!d.importClause && !!d.importClause.namedBindings);
|
|
|
|
const nlsExpressions = importEqualsDeclarations
|
|
.map(d => (<ts.ExternalModuleReference>d.moduleReference).expression)
|
|
.concat(importDeclarations.map(d => d.moduleSpecifier))
|
|
.map<ISpan>(d => ({
|
|
start: ts.getLineAndCharacterOfPosition(sourceFile, d.getStart()),
|
|
end: ts.getLineAndCharacterOfPosition(sourceFile, d.getEnd())
|
|
}));
|
|
|
|
// `nls.localize(...)` calls
|
|
const nlsLocalizeCallExpressions = importDeclarations
|
|
.filter(d => !!(d.importClause && d.importClause.namedBindings && d.importClause.namedBindings.kind === ts.SyntaxKind.NamespaceImport))
|
|
.map(d => (<ts.NamespaceImport>d.importClause!.namedBindings).name)
|
|
.concat(importEqualsDeclarations.map(d => d.name))
|
|
|
|
// find read-only references to `nls`
|
|
.map(n => service.getReferencesAtPosition(filename, n.pos + 1))
|
|
.flatten()
|
|
.filter(r => !r.isWriteAccess)
|
|
|
|
// find the deepest call expressions AST nodes that contain those references
|
|
.map(r => collect(ts, sourceFile, n => isCallExpressionWithinTextSpanCollectStep(ts, r.textSpan, n)))
|
|
.map(a => lazy(a).last())
|
|
.filter(n => !!n)
|
|
.map(n => <ts.CallExpression>n)
|
|
|
|
// only `localize` calls
|
|
.filter(n => n.expression.kind === ts.SyntaxKind.PropertyAccessExpression && (<ts.PropertyAccessExpression>n.expression).name.getText() === functionName);
|
|
|
|
// `localize` named imports
|
|
const allLocalizeImportDeclarations = importDeclarations
|
|
.filter(d => !!(d.importClause && d.importClause.namedBindings && d.importClause.namedBindings.kind === ts.SyntaxKind.NamedImports))
|
|
.map(d => ([] as any[]).concat((<ts.NamedImports>d.importClause!.namedBindings!).elements))
|
|
.flatten();
|
|
|
|
// `localize` read-only references
|
|
const localizeReferences = allLocalizeImportDeclarations
|
|
.filter(d => d.name.getText() === functionName)
|
|
.map(n => service.getReferencesAtPosition(filename, n.pos + 1))
|
|
.flatten()
|
|
.filter(r => !r.isWriteAccess);
|
|
|
|
// custom named `localize` read-only references
|
|
const namedLocalizeReferences = allLocalizeImportDeclarations
|
|
.filter(d => d.propertyName && d.propertyName.getText() === functionName)
|
|
.map(n => service.getReferencesAtPosition(filename, n.name.pos + 1))
|
|
.flatten()
|
|
.filter(r => !r.isWriteAccess);
|
|
|
|
// find the deepest call expressions AST nodes that contain those references
|
|
const localizeCallExpressions = localizeReferences
|
|
.concat(namedLocalizeReferences)
|
|
.map(r => collect(ts, sourceFile, n => isCallExpressionWithinTextSpanCollectStep(ts, r.textSpan, n)))
|
|
.map(a => lazy(a).last())
|
|
.filter(n => !!n)
|
|
.map(n => <ts.CallExpression>n);
|
|
|
|
// collect everything
|
|
const localizeCalls = nlsLocalizeCallExpressions
|
|
.concat(localizeCallExpressions)
|
|
.map(e => e.arguments)
|
|
.filter(a => a.length > 1)
|
|
.sort((a, b) => a[0].getStart() - b[0].getStart())
|
|
.map<ILocalizeCall>(a => ({
|
|
keySpan: { start: ts.getLineAndCharacterOfPosition(sourceFile, a[0].getStart()), end: ts.getLineAndCharacterOfPosition(sourceFile, a[0].getEnd()) },
|
|
key: a[0].getText(),
|
|
valueSpan: { start: ts.getLineAndCharacterOfPosition(sourceFile, a[1].getStart()), end: ts.getLineAndCharacterOfPosition(sourceFile, a[1].getEnd()) },
|
|
value: a[1].getText()
|
|
}));
|
|
|
|
return {
|
|
localizeCalls: localizeCalls.toArray(),
|
|
nlsExpressions: nlsExpressions.toArray()
|
|
};
|
|
}
|
|
|
|
class TextModel {
|
|
|
|
private lines: string[];
|
|
private lineEndings: string[];
|
|
|
|
constructor(contents: string) {
|
|
const regex = /\r\n|\r|\n/g;
|
|
let index = 0;
|
|
let match: RegExpExecArray | null;
|
|
|
|
this.lines = [];
|
|
this.lineEndings = [];
|
|
|
|
while (match = regex.exec(contents)) {
|
|
this.lines.push(contents.substring(index, match.index));
|
|
this.lineEndings.push(match[0]);
|
|
index = regex.lastIndex;
|
|
}
|
|
|
|
if (contents.length > 0) {
|
|
this.lines.push(contents.substring(index, contents.length));
|
|
this.lineEndings.push('');
|
|
}
|
|
}
|
|
|
|
public get(index: number): string {
|
|
return this.lines[index];
|
|
}
|
|
|
|
public set(index: number, line: string): void {
|
|
this.lines[index] = line;
|
|
}
|
|
|
|
public get lineCount(): number {
|
|
return this.lines.length;
|
|
}
|
|
|
|
/**
|
|
* Applies patch(es) to the model.
|
|
* Multiple patches must be ordered.
|
|
* Does not support patches spanning multiple lines.
|
|
*/
|
|
public apply(patch: IPatch): void {
|
|
const startLineNumber = patch.span.start.line;
|
|
const endLineNumber = patch.span.end.line;
|
|
|
|
const startLine = this.lines[startLineNumber] || '';
|
|
const endLine = this.lines[endLineNumber] || '';
|
|
|
|
this.lines[startLineNumber] = [
|
|
startLine.substring(0, patch.span.start.character),
|
|
patch.content,
|
|
endLine.substring(patch.span.end.character)
|
|
].join('');
|
|
|
|
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, moduleId: string): string {
|
|
const model = new TextModel(contents);
|
|
|
|
// patch the localize calls
|
|
lazy(patches).reverse().each(p => model.apply(p));
|
|
|
|
// patch the 'vs/nls' imports
|
|
const firstLine = model.get(0);
|
|
const patchedFirstLine = firstLine.replace(/(['"])vs\/nls\1/g, `$1vs/nls!${moduleId}$1`);
|
|
model.set(0, patchedFirstLine);
|
|
|
|
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 patch(ts: typeof import('typescript'), moduleId: string, typescript: string, javascript: string, sourcemap: sm.RawSourceMap): INlsStringResult {
|
|
const { localizeCalls, nlsExpressions } = analyze(ts, typescript, 'localize');
|
|
const { localizeCalls: localize2Calls, nlsExpressions: nls2Expressions } = analyze(ts, typescript, 'localize2');
|
|
|
|
if (localizeCalls.length === 0) {
|
|
return { javascript, sourcemap };
|
|
}
|
|
|
|
const nlsKeys = template(localizeCalls.map(lc => lc.key).concat(localize2Calls.map(lc => lc.key)));
|
|
const nls = template(localizeCalls.map(lc => lc.value).concat(localize2Calls.map(lc => lc.value)));
|
|
const smc = new sm.SourceMapConsumer(sourcemap);
|
|
const positionFrom = mappedPositionFrom.bind(null, sourcemap.sources[0]);
|
|
let i = 0;
|
|
|
|
// build patches
|
|
const localizePatches = lazy(localizeCalls)
|
|
.map(lc => ([
|
|
{ range: lc.keySpan, content: '' + (i++) },
|
|
{ range: lc.valueSpan, content: 'null' }
|
|
]))
|
|
.flatten()
|
|
.map<IPatch>(c => {
|
|
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 localize2Patches = lazy(localize2Calls)
|
|
.map(lc => ([
|
|
{ range: lc.keySpan, content: '' + (i++) }
|
|
])).flatten()
|
|
.map<IPatch>(c => {
|
|
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 patches = localizePatches.concat(localize2Patches).toArray();
|
|
|
|
javascript = patchJavascript(patches, javascript, moduleId);
|
|
|
|
// since imports are not within the sourcemap information,
|
|
// we must do this MacGyver style
|
|
if (nlsExpressions.length || nls2Expressions.length) {
|
|
javascript = javascript.replace(/^define\(.*$/m, line => {
|
|
return line.replace(/(['"])vs\/nls\1/g, `$1vs/nls!${moduleId}$1`);
|
|
});
|
|
}
|
|
|
|
sourcemap = patchSourcemap(patches, sourcemap, smc);
|
|
|
|
return { javascript, sourcemap, nlsKeys, nls };
|
|
}
|
|
|
|
export function patchFiles(javascriptFile: File, typescript: string): File[] {
|
|
const ts = require('typescript') as typeof import('typescript');
|
|
// hack?
|
|
const moduleId = javascriptFile.relative
|
|
.replace(/\.js$/, '')
|
|
.replace(/\\/g, '/');
|
|
|
|
const { javascript, sourcemap, nlsKeys, nls } = patch(
|
|
ts,
|
|
moduleId,
|
|
typescript,
|
|
javascriptFile.contents.toString(),
|
|
(<any>javascriptFile).sourceMap
|
|
);
|
|
|
|
const result: File[] = [fileFrom(javascriptFile, javascript)];
|
|
(<any>result[0]).sourceMap = sourcemap;
|
|
|
|
if (nlsKeys) {
|
|
result.push(fileFrom(javascriptFile, nlsKeys, javascriptFile.path.replace(/\.js$/, '.nls.keys.js')));
|
|
}
|
|
|
|
if (nls) {
|
|
result.push(fileFrom(javascriptFile, nls, javascriptFile.path.replace(/\.js$/, '.nls.js')));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|