230255f887
Refactoring the compiler to use transformers moves the code generation after type-checking which suppresses the errors TypeScript would generate in the user code. `TypeChecker` currently produces the same factory code that was generated prior the switch to transfomers, getting back the same diagnostics as before. The refactoring will allow the code to diverge from the factory code and allow better diagnostic error messages than was previously possible by type-checking the factories.
642 lines
21 KiB
TypeScript
642 lines
21 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {AotCompilerHost, AotCompilerOptions, GeneratedFile, createAotCompiler, toTypeScript} from '@angular/compiler';
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import {MetadataBundlerHost, MetadataCollector, ModuleMetadata} from '@angular/tsc-wrapped';
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import * as fs from 'fs';
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import * as path from 'path';
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import * as ts from 'typescript';
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let nodeModulesPath: string;
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let angularSourcePath: string;
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let rootPath: string;
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calcPathsOnDisc();
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export type MockFileOrDirectory = string | MockDirectory;
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export type MockDirectory = {
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[name: string]: MockFileOrDirectory | undefined;
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};
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export function isDirectory(data: MockFileOrDirectory | undefined): data is MockDirectory {
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return typeof data !== 'string';
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}
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const NODE_MODULES = '/node_modules/';
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const IS_GENERATED = /\.(ngfactory|ngstyle)$/;
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const angularts = /@angular\/(\w|\/|-)+\.tsx?$/;
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const rxjs = /\/rxjs\//;
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const tsxfile = /\.tsx$/;
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export const settings: ts.CompilerOptions = {
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target: ts.ScriptTarget.ES5,
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declaration: true,
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module: ts.ModuleKind.CommonJS,
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moduleResolution: ts.ModuleResolutionKind.NodeJs,
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emitDecoratorMetadata: true,
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experimentalDecorators: true,
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removeComments: false,
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noImplicitAny: false,
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skipLibCheck: true,
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strictNullChecks: true,
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lib: ['lib.es2015.d.ts', 'lib.dom.d.ts'],
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types: []
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};
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export interface EmitterOptions {
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emitMetadata: boolean;
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mockData?: MockDirectory;
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}
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function calcPathsOnDisc() {
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const moduleFilename = module.filename.replace(/\\/g, '/');
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const distIndex = moduleFilename.indexOf('/dist/all');
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if (distIndex >= 0) {
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rootPath = moduleFilename.substr(0, distIndex);
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nodeModulesPath = path.join(rootPath, 'node_modules');
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angularSourcePath = path.join(rootPath, 'packages');
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}
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}
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export class EmittingCompilerHost implements ts.CompilerHost {
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private addedFiles = new Map<string, string>();
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private writtenFiles = new Map<string, string>();
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private scriptNames: string[];
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private root = '/';
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private collector = new MetadataCollector();
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constructor(scriptNames: string[], private options: EmitterOptions) {
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// Rewrite references to scripts with '@angular' to its corresponding location in
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// the source tree.
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this.scriptNames = scriptNames.map(f => this.effectiveName(f));
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this.root = rootPath;
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}
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public writtenAngularFiles(target = new Map<string, string>()): Map<string, string> {
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this.written.forEach((value, key) => {
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const path = `/node_modules/@angular${key.substring(angularSourcePath.length)}`;
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target.set(path, value);
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});
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return target;
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}
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public addScript(fileName: string, content: string) {
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const scriptName = this.effectiveName(fileName);
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this.addedFiles.set(scriptName, content);
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this.scriptNames.push(scriptName);
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}
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public override(fileName: string, content: string) {
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const scriptName = this.effectiveName(fileName);
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this.addedFiles.set(scriptName, content);
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}
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public addWrittenFile(fileName: string, content: string) {
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this.writtenFiles.set(this.effectiveName(fileName), content);
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}
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public getWrittenFiles(): {name: string, content: string}[] {
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return Array.from(this.writtenFiles).map(f => ({name: f[0], content: f[1]}));
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}
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public get scripts(): string[] { return this.scriptNames; }
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public get written(): Map<string, string> { return this.writtenFiles; }
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public effectiveName(fileName: string): string {
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const prefix = '@angular/';
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return fileName.startsWith('@angular/') ?
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path.join(angularSourcePath, fileName.substr(prefix.length)) :
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fileName;
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}
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// ts.ModuleResolutionHost
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fileExists(fileName: string): boolean {
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return this.addedFiles.has(fileName) || open(fileName, this.options.mockData) != null ||
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fs.existsSync(fileName);
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}
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readFile(fileName: string): string {
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const result = this.addedFiles.get(fileName) || open(fileName, this.options.mockData);
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if (result) return result;
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let basename = path.basename(fileName);
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if (/^lib.*\.d\.ts$/.test(basename)) {
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let libPath = ts.getDefaultLibFilePath(settings);
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return fs.readFileSync(path.join(path.dirname(libPath), basename), 'utf8');
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}
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return fs.readFileSync(fileName, 'utf8');
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}
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directoryExists(directoryName: string): boolean {
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return directoryExists(directoryName, this.options.mockData) ||
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(fs.existsSync(directoryName) && fs.statSync(directoryName).isDirectory());
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}
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getCurrentDirectory(): string { return this.root; }
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getDirectories(dir: string): string[] {
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const result = open(dir, this.options.mockData);
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if (result && typeof result !== 'string') {
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return Object.keys(result);
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}
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return fs.readdirSync(dir).filter(p => {
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const name = path.join(dir, p);
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const stat = fs.statSync(name);
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return stat && stat.isDirectory();
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});
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}
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// ts.CompilerHost
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getSourceFile(
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fileName: string, languageVersion: ts.ScriptTarget,
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onError?: (message: string) => void): ts.SourceFile {
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const content = this.readFile(fileName);
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if (content) {
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return ts.createSourceFile(fileName, content, languageVersion, /* setParentNodes */ true);
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}
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throw new Error(`File not found '${fileName}'.`);
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}
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getDefaultLibFileName(options: ts.CompilerOptions): string { return 'lib.d.ts'; }
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writeFile: ts.WriteFileCallback =
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(fileName: string, data: string, writeByteOrderMark: boolean,
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onError?: (message: string) => void, sourceFiles?: ts.SourceFile[]) => {
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this.addWrittenFile(fileName, data);
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if (this.options.emitMetadata && sourceFiles && sourceFiles.length && DTS.test(fileName)) {
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const metadataFilePath = fileName.replace(DTS, '.metadata.json');
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const metadata = this.collector.getMetadata(sourceFiles[0]);
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if (metadata) {
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this.addWrittenFile(metadataFilePath, JSON.stringify(metadata));
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}
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}
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}
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getCanonicalFileName(fileName: string): string {
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return fileName;
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}
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useCaseSensitiveFileNames(): boolean { return false; }
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getNewLine(): string { return '\n'; }
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}
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export class MockCompilerHost implements ts.CompilerHost {
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scriptNames: string[];
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public overrides = new Map<string, string>();
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public writtenFiles = new Map<string, string>();
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private sourceFiles = new Map<string, ts.SourceFile>();
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private assumeExists = new Set<string>();
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private traces: string[] = [];
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constructor(scriptNames: string[], private data: MockDirectory) {
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this.scriptNames = scriptNames.slice(0);
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}
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// Test API
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override(fileName: string, content: string) {
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if (content) {
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this.overrides.set(fileName, content);
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} else {
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this.overrides.delete(fileName);
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}
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this.sourceFiles.delete(fileName);
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}
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addScript(fileName: string, content: string) {
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this.overrides.set(fileName, content);
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this.scriptNames.push(fileName);
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this.sourceFiles.delete(fileName);
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}
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assumeFileExists(fileName: string) { this.assumeExists.add(fileName); }
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remove(files: string[]) {
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// Remove the files from the list of scripts.
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const fileSet = new Set(files);
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this.scriptNames = this.scriptNames.filter(f => fileSet.has(f));
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// Remove files from written files
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files.forEach(f => this.writtenFiles.delete(f));
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}
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// ts.ModuleResolutionHost
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fileExists(fileName: string): boolean {
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if (this.overrides.has(fileName) || this.writtenFiles.has(fileName) ||
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this.assumeExists.has(fileName)) {
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return true;
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}
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const effectiveName = this.getEffectiveName(fileName);
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if (effectiveName == fileName) {
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return open(fileName, this.data) != null;
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}
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if (fileName.match(rxjs)) {
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return fs.existsSync(effectiveName);
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}
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return false;
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}
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readFile(fileName: string): string { return this.getFileContent(fileName) !; }
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trace(s: string): void { this.traces.push(s); }
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getCurrentDirectory(): string { return '/'; }
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getDirectories(dir: string): string[] {
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const effectiveName = this.getEffectiveName(dir);
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if (effectiveName === dir) {
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const data = find(dir, this.data);
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if (isDirectory(data)) {
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return Object.keys(data).filter(k => isDirectory(data[k]));
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}
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}
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return [];
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}
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// ts.CompilerHost
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getSourceFile(
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fileName: string, languageVersion: ts.ScriptTarget,
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onError?: (message: string) => void): ts.SourceFile {
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let result = this.sourceFiles.get(fileName);
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if (!result) {
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const content = this.getFileContent(fileName);
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if (content) {
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result = ts.createSourceFile(fileName, content, languageVersion);
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this.sourceFiles.set(fileName, result);
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}
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}
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return result !;
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}
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getDefaultLibFileName(options: ts.CompilerOptions): string { return 'lib.d.ts'; }
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writeFile: ts.WriteFileCallback =
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(fileName: string, data: string, writeByteOrderMark: boolean) => {
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this.writtenFiles.set(fileName, data);
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this.sourceFiles.delete(fileName);
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}
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getCanonicalFileName(fileName: string): string {
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return fileName;
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}
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useCaseSensitiveFileNames(): boolean { return false; }
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getNewLine(): string { return '\n'; }
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// Private methods
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private getFileContent(fileName: string): string|undefined {
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if (this.overrides.has(fileName)) {
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return this.overrides.get(fileName);
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}
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if (this.writtenFiles.has(fileName)) {
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return this.writtenFiles.get(fileName);
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}
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let basename = path.basename(fileName);
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if (/^lib.*\.d\.ts$/.test(basename)) {
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let libPath = ts.getDefaultLibFilePath(settings);
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return fs.readFileSync(path.join(path.dirname(libPath), basename), 'utf8');
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}
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let effectiveName = this.getEffectiveName(fileName);
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if (effectiveName === fileName) {
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return open(fileName, this.data);
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}
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if (fileName.match(rxjs) && fs.existsSync(fileName)) {
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return fs.readFileSync(fileName, 'utf8');
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}
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}
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private getEffectiveName(name: string): string {
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const node_modules = 'node_modules';
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const rxjs = '/rxjs';
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if (name.startsWith('/' + node_modules)) {
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if (nodeModulesPath && name.startsWith('/' + node_modules + rxjs)) {
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return path.join(nodeModulesPath, name.substr(node_modules.length + 1));
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}
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}
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return name;
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}
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}
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const EXT = /(\.ts|\.d\.ts|\.js|\.jsx|\.tsx)$/;
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const DTS = /\.d\.ts$/;
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const GENERATED_FILES = /\.ngfactory\.ts$|\.ngstyle\.ts$/;
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export class MockAotCompilerHost implements AotCompilerHost {
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private metadataCollector = new MetadataCollector();
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private metadataVisible: boolean = true;
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private dtsAreSource: boolean = true;
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constructor(private tsHost: MockCompilerHost) {}
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hideMetadata() { this.metadataVisible = false; }
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tsFilesOnly() { this.dtsAreSource = false; }
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// StaticSymbolResolverHost
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getMetadataFor(modulePath: string): {[key: string]: any}[]|undefined {
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if (!this.tsHost.fileExists(modulePath)) {
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return undefined;
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}
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if (DTS.test(modulePath)) {
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if (this.metadataVisible) {
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const metadataPath = modulePath.replace(DTS, '.metadata.json');
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if (this.tsHost.fileExists(metadataPath)) {
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let result = JSON.parse(this.tsHost.readFile(metadataPath));
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return Array.isArray(result) ? result : [result];
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}
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}
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} else {
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const sf = this.tsHost.getSourceFile(modulePath, ts.ScriptTarget.Latest);
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const metadata = this.metadataCollector.getMetadata(sf);
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return metadata ? [metadata] : [];
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}
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return undefined;
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}
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moduleNameToFileName(moduleName: string, containingFile: string): string|null {
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if (!containingFile || !containingFile.length) {
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if (moduleName.indexOf('.') === 0) {
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throw new Error('Resolution of relative paths requires a containing file.');
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}
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// Any containing file gives the same result for absolute imports
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containingFile = path.join('/', 'index.ts');
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}
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moduleName = moduleName.replace(EXT, '');
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const resolved = ts.resolveModuleName(
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moduleName, containingFile.replace(/\\/g, '/'),
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{baseDir: '/', genDir: '/'}, this.tsHost)
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.resolvedModule;
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return resolved ? resolved.resolvedFileName : null;
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}
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// AotSummaryResolverHost
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loadSummary(filePath: string): string|null { return this.tsHost.readFile(filePath); }
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isSourceFile(sourceFilePath: string): boolean {
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return !GENERATED_FILES.test(sourceFilePath) &&
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(this.dtsAreSource || !DTS.test(sourceFilePath));
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}
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getOutputFileName(sourceFilePath: string): string {
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return sourceFilePath.replace(EXT, '') + '.d.ts';
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}
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// AotCompilerHost
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fileNameToModuleName(importedFile: string, containingFile: string): string|null {
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return importedFile.replace(EXT, '');
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}
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loadResource(path: string): string {
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if (this.tsHost.fileExists(path)) {
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return this.tsHost.readFile(path);
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} else {
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throw new Error(`Resource ${path} not found.`);
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}
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}
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}
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export class MockMetadataBundlerHost implements MetadataBundlerHost {
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private collector = new MetadataCollector();
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constructor(private host: ts.CompilerHost) {}
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getMetadataFor(moduleName: string): ModuleMetadata {
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const source = this.host.getSourceFile(moduleName + '.ts', ts.ScriptTarget.Latest);
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return this.collector.getMetadata(source);
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}
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}
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function find(fileName: string, data: MockFileOrDirectory | undefined): MockFileOrDirectory|
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undefined {
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if (!data) return undefined;
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const names = fileName.split('/');
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if (names.length && !names[0].length) names.shift();
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let current: MockFileOrDirectory|undefined = data;
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for (const name of names) {
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if (typeof current !== 'object') {
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return undefined;
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}
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current = current[name];
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}
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return current;
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}
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function open(fileName: string, data: MockFileOrDirectory | undefined): string|undefined {
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let result = find(fileName, data);
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if (typeof result === 'string') {
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return result;
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}
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return undefined;
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}
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function directoryExists(dirname: string, data: MockFileOrDirectory | undefined): boolean {
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let result = find(dirname, data);
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return !!result && typeof result !== 'string';
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}
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export type MockFileArray = {
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fileName: string,
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content: string
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}[];
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export type MockData = MockDirectory | Map<string, string>| (MockDirectory | Map<string, string>)[];
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export function toMockFileArray(data: MockData, target: MockFileArray = []): MockFileArray {
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if (data instanceof Map) {
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mapToMockFileArray(data, target);
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} else if (Array.isArray(data)) {
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data.forEach(entry => toMockFileArray(entry, target));
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} else {
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mockDirToFileArray(data, '', target);
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}
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return target;
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}
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function mockDirToFileArray(dir: MockDirectory, path: string, target: MockFileArray) {
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Object.keys(dir).forEach((localFileName) => {
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const value = dir[localFileName] !;
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const fileName = `${path}/${localFileName}`;
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if (typeof value === 'string') {
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target.push({fileName, content: value});
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} else {
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mockDirToFileArray(value, fileName, target);
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}
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});
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}
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function mapToMockFileArray(files: Map<string, string>, target: MockFileArray) {
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files.forEach((content, fileName) => { target.push({fileName, content}); });
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}
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export function arrayToMockMap(arr: MockFileArray): Map<string, string> {
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const map = new Map<string, string>();
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arr.forEach(({fileName, content}) => { map.set(fileName, content); });
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return map;
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}
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export function arrayToMockDir(arr: MockFileArray): MockDirectory {
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const rootDir: MockDirectory = {};
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arr.forEach(({fileName, content}) => {
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let pathParts = fileName.split('/');
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// trim trailing slash
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let startIndex = pathParts[0] ? 0 : 1;
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// get/create the directory
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let currentDir = rootDir;
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for (let i = startIndex; i < pathParts.length - 1; i++) {
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const pathPart = pathParts[i];
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let localDir = <MockDirectory>currentDir[pathPart];
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if (!localDir) {
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currentDir[pathPart] = localDir = {};
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}
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currentDir = localDir;
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}
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// write the file
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currentDir[pathParts[pathParts.length - 1]] = content;
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});
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return rootDir;
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}
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const minCoreIndex = `
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export * from './src/application_module';
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export * from './src/change_detection';
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export * from './src/metadata';
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export * from './src/di/metadata';
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export * from './src/di/injector';
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export * from './src/di/injection_token';
|
|
export * from './src/linker';
|
|
export * from './src/render';
|
|
export * from './src/codegen_private_exports';
|
|
`;
|
|
|
|
export function setup(options: {compileAngular: boolean} = {
|
|
compileAngular: true
|
|
}) {
|
|
let angularFiles = new Map<string, string>();
|
|
|
|
beforeAll(() => {
|
|
if (options.compileAngular) {
|
|
const emittingHost = new EmittingCompilerHost([], {emitMetadata: true});
|
|
emittingHost.addScript('@angular/core/index.ts', minCoreIndex);
|
|
const emittingProgram = ts.createProgram(emittingHost.scripts, settings, emittingHost);
|
|
emittingProgram.emit();
|
|
emittingHost.writtenAngularFiles(angularFiles);
|
|
}
|
|
});
|
|
|
|
return angularFiles;
|
|
}
|
|
|
|
export function expectNoDiagnostics(program: ts.Program) {
|
|
function fileInfo(diagnostic: ts.Diagnostic): string {
|
|
if (diagnostic.file) {
|
|
return `${diagnostic.file.fileName}(${diagnostic.start}): `;
|
|
}
|
|
return '';
|
|
}
|
|
|
|
function chars(len: number, ch: string): string { return new Array(len).fill(ch).join(''); }
|
|
|
|
function lineNoOf(offset: number, text: string): number {
|
|
let result = 1;
|
|
for (let i = 0; i < offset; i++) {
|
|
if (text[i] == '\n') result++;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function lineInfo(diagnostic: ts.Diagnostic): string {
|
|
if (diagnostic.file) {
|
|
const start = diagnostic.start;
|
|
let end = diagnostic.start + diagnostic.length;
|
|
const source = diagnostic.file.text;
|
|
let lineStart = start;
|
|
let lineEnd = end;
|
|
while (lineStart > 0 && source[lineStart] != '\n') lineStart--;
|
|
if (lineStart < start) lineStart++;
|
|
while (lineEnd < source.length && source[lineEnd] != '\n') lineEnd++;
|
|
let line = source.substring(lineStart, lineEnd);
|
|
const lineIndex = line.indexOf('/n');
|
|
if (lineIndex > 0) {
|
|
line = line.substr(0, lineIndex);
|
|
end = start + lineIndex;
|
|
}
|
|
const lineNo = lineNoOf(start, source) + ': ';
|
|
return '\n' + lineNo + line + '\n' + chars(start - lineStart + lineNo.length, ' ') +
|
|
chars(end - start, '^');
|
|
}
|
|
return '';
|
|
}
|
|
|
|
function expectNoDiagnostics(diagnostics: ts.Diagnostic[]) {
|
|
if (diagnostics && diagnostics.length) {
|
|
throw new Error(
|
|
'Errors from TypeScript:\n' +
|
|
diagnostics.map(d => `${fileInfo(d)}${d.messageText}${lineInfo(d)}`).join(' \n'));
|
|
}
|
|
}
|
|
expectNoDiagnostics(program.getOptionsDiagnostics());
|
|
expectNoDiagnostics(program.getSyntacticDiagnostics());
|
|
expectNoDiagnostics(program.getSemanticDiagnostics());
|
|
}
|
|
|
|
export function isSource(fileName: string): boolean {
|
|
return !/\.d\.ts$/.test(fileName) && /\.ts$/.test(fileName);
|
|
}
|
|
|
|
export function compile(
|
|
rootDirs: MockData, options: {
|
|
emit?: boolean,
|
|
useSummaries?: boolean,
|
|
preCompile?: (program: ts.Program) => void,
|
|
postCompile?: (program: ts.Program) => void,
|
|
stubsOnly?: boolean,
|
|
}& AotCompilerOptions = {},
|
|
tsOptions: ts.CompilerOptions = {}): {genFiles: GeneratedFile[], outDir: MockDirectory} {
|
|
// when using summaries, always emit so the next step can use the results.
|
|
const emit = options.emit || options.useSummaries;
|
|
const preCompile = options.preCompile || (() => {});
|
|
const postCompile = options.postCompile || expectNoDiagnostics;
|
|
const rootDirArr = toMockFileArray(rootDirs);
|
|
const scriptNames = rootDirArr.map(entry => entry.fileName).filter(isSource);
|
|
|
|
const host = new MockCompilerHost(scriptNames, arrayToMockDir(rootDirArr));
|
|
const aotHost = new MockAotCompilerHost(host);
|
|
if (options.useSummaries) {
|
|
aotHost.hideMetadata();
|
|
aotHost.tsFilesOnly();
|
|
}
|
|
const tsSettings = {...settings, ...tsOptions};
|
|
const program = ts.createProgram(host.scriptNames.slice(0), tsSettings, host);
|
|
preCompile(program);
|
|
const {compiler, reflector} = createAotCompiler(aotHost, options);
|
|
const analyzedModules =
|
|
compiler.analyzeModulesSync(program.getSourceFiles().map(sf => sf.fileName));
|
|
const genFiles = options.stubsOnly ? compiler.emitAllStubs(analyzedModules) :
|
|
compiler.emitAllImpls(analyzedModules);
|
|
genFiles.forEach((file) => {
|
|
const source = file.source || toTypeScript(file);
|
|
if (isSource(file.genFileUrl)) {
|
|
host.addScript(file.genFileUrl, source);
|
|
} else {
|
|
host.override(file.genFileUrl, source);
|
|
}
|
|
});
|
|
const newProgram = ts.createProgram(host.scriptNames.slice(0), tsSettings, host);
|
|
postCompile(newProgram);
|
|
if (emit) {
|
|
newProgram.emit();
|
|
}
|
|
let outDir: MockDirectory = {};
|
|
if (emit) {
|
|
outDir = arrayToMockDir(toMockFileArray([
|
|
host.writtenFiles, host.overrides
|
|
]).filter((entry) => !isSource(entry.fileName)));
|
|
}
|
|
return {genFiles, outDir};
|
|
}
|