aaa16f286d
This commit adds a `tracePerformance` option for tsconfig.json. When specified, it causes a JSON file with timing information from the ngtsc compiler to be emitted at the specified path. This tracing system is used to instrument the analysis/emit phases of compilation, and will be useful in debugging future integration work with @angular/cli. See ngtsc/perf/README.md for more details. PR Close #29380
563 lines
24 KiB
TypeScript
563 lines
24 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 {GeneratedFile} from '@angular/compiler';
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import * as ts from 'typescript';
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import * as api from '../transformers/api';
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import {nocollapseHack} from '../transformers/nocollapse_hack';
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import {ComponentDecoratorHandler, DirectiveDecoratorHandler, InjectableDecoratorHandler, NgModuleDecoratorHandler, NoopReferencesRegistry, PipeDecoratorHandler, ReferencesRegistry} from './annotations';
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import {BaseDefDecoratorHandler} from './annotations/src/base_def';
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import {CycleAnalyzer, ImportGraph} from './cycles';
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import {ErrorCode, ngErrorCode} from './diagnostics';
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import {FlatIndexGenerator, ReferenceGraph, checkForPrivateExports, findFlatIndexEntryPoint} from './entry_point';
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import {AbsoluteModuleStrategy, AliasGenerator, AliasStrategy, DefaultImportTracker, FileToModuleHost, FileToModuleStrategy, ImportRewriter, LocalIdentifierStrategy, LogicalProjectStrategy, ModuleResolver, NoopImportRewriter, R3SymbolsImportRewriter, Reference, ReferenceEmitter} from './imports';
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import {PartialEvaluator} from './partial_evaluator';
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import {AbsoluteFsPath, LogicalFileSystem} from './path';
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import {NOOP_PERF_RECORDER, PerfRecorder, PerfTracker} from './perf';
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import {TypeScriptReflectionHost} from './reflection';
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import {HostResourceLoader} from './resource_loader';
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import {NgModuleRouteAnalyzer, entryPointKeyFor} from './routing';
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import {LocalModuleScopeRegistry, MetadataDtsModuleScopeResolver} from './scope';
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import {FactoryGenerator, FactoryInfo, GeneratedShimsHostWrapper, ShimGenerator, SummaryGenerator, generatedFactoryTransform} from './shims';
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import {ivySwitchTransform} from './switch';
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import {IvyCompilation, declarationTransformFactory, ivyTransformFactory} from './transform';
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import {aliasTransformFactory} from './transform/src/alias';
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import {TypeCheckContext, TypeCheckProgramHost} from './typecheck';
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import {normalizeSeparators} from './util/src/path';
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import {getRootDirs, isDtsPath} from './util/src/typescript';
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export class NgtscProgram implements api.Program {
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private tsProgram: ts.Program;
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private resourceManager: HostResourceLoader;
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private compilation: IvyCompilation|undefined = undefined;
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private factoryToSourceInfo: Map<string, FactoryInfo>|null = null;
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private sourceToFactorySymbols: Map<string, Set<string>>|null = null;
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private host: ts.CompilerHost;
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private _coreImportsFrom: ts.SourceFile|null|undefined = undefined;
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private _importRewriter: ImportRewriter|undefined = undefined;
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private _reflector: TypeScriptReflectionHost|undefined = undefined;
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private _isCore: boolean|undefined = undefined;
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private rootDirs: AbsoluteFsPath[];
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private closureCompilerEnabled: boolean;
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private entryPoint: ts.SourceFile|null;
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private exportReferenceGraph: ReferenceGraph|null = null;
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private flatIndexGenerator: FlatIndexGenerator|null = null;
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private routeAnalyzer: NgModuleRouteAnalyzer|null = null;
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private constructionDiagnostics: ts.Diagnostic[] = [];
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private moduleResolver: ModuleResolver;
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private cycleAnalyzer: CycleAnalyzer;
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private refEmitter: ReferenceEmitter|null = null;
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private fileToModuleHost: FileToModuleHost|null = null;
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private defaultImportTracker: DefaultImportTracker;
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private perfRecorder: PerfRecorder = NOOP_PERF_RECORDER;
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private perfTracker: PerfTracker|null = null;
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constructor(
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rootNames: ReadonlyArray<string>, private options: api.CompilerOptions,
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host: api.CompilerHost, oldProgram?: api.Program) {
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if (shouldEnablePerfTracing(options)) {
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this.perfTracker = PerfTracker.zeroedToNow();
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this.perfRecorder = this.perfTracker;
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}
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this.rootDirs = getRootDirs(host, options);
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this.closureCompilerEnabled = !!options.annotateForClosureCompiler;
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this.resourceManager = new HostResourceLoader(host, options);
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const shouldGenerateShims = options.allowEmptyCodegenFiles || false;
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const normalizedRootNames = rootNames.map(n => AbsoluteFsPath.from(n));
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this.host = host;
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if (host.fileNameToModuleName !== undefined) {
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this.fileToModuleHost = host as FileToModuleHost;
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}
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let rootFiles = [...rootNames];
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const generators: ShimGenerator[] = [];
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if (shouldGenerateShims) {
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// Summary generation.
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const summaryGenerator = SummaryGenerator.forRootFiles(normalizedRootNames);
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// Factory generation.
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const factoryGenerator = FactoryGenerator.forRootFiles(normalizedRootNames);
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const factoryFileMap = factoryGenerator.factoryFileMap;
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this.factoryToSourceInfo = new Map<string, FactoryInfo>();
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this.sourceToFactorySymbols = new Map<string, Set<string>>();
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factoryFileMap.forEach((sourceFilePath, factoryPath) => {
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const moduleSymbolNames = new Set<string>();
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this.sourceToFactorySymbols !.set(sourceFilePath, moduleSymbolNames);
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this.factoryToSourceInfo !.set(factoryPath, {sourceFilePath, moduleSymbolNames});
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});
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const factoryFileNames = Array.from(factoryFileMap.keys());
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rootFiles.push(...factoryFileNames, ...summaryGenerator.getSummaryFileNames());
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generators.push(summaryGenerator, factoryGenerator);
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}
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let entryPoint: string|null = null;
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if (options.flatModuleOutFile !== undefined) {
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entryPoint = findFlatIndexEntryPoint(normalizedRootNames);
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if (entryPoint === null) {
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// This error message talks specifically about having a single .ts file in "files". However
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// the actual logic is a bit more permissive. If a single file exists, that will be taken,
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// otherwise the highest level (shortest path) "index.ts" file will be used as the flat
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// module entry point instead. If neither of these conditions apply, the error below is
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// given.
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//
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// The user is not informed about the "index.ts" option as this behavior is deprecated -
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// an explicit entrypoint should always be specified.
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this.constructionDiagnostics.push({
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category: ts.DiagnosticCategory.Error,
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code: ngErrorCode(ErrorCode.CONFIG_FLAT_MODULE_NO_INDEX),
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file: undefined,
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start: undefined,
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length: undefined,
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messageText:
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'Angular compiler option "flatModuleOutFile" requires one and only one .ts file in the "files" field.',
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});
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} else {
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const flatModuleId = options.flatModuleId || null;
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const flatModuleOutFile = normalizeSeparators(options.flatModuleOutFile);
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this.flatIndexGenerator =
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new FlatIndexGenerator(entryPoint, flatModuleOutFile, flatModuleId);
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generators.push(this.flatIndexGenerator);
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rootFiles.push(this.flatIndexGenerator.flatIndexPath);
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}
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}
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if (generators.length > 0) {
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this.host = new GeneratedShimsHostWrapper(host, generators);
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}
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this.tsProgram =
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ts.createProgram(rootFiles, options, this.host, oldProgram && oldProgram.getTsProgram());
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this.entryPoint = entryPoint !== null ? this.tsProgram.getSourceFile(entryPoint) || null : null;
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this.moduleResolver = new ModuleResolver(this.tsProgram, options, this.host);
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this.cycleAnalyzer = new CycleAnalyzer(new ImportGraph(this.moduleResolver));
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this.defaultImportTracker = new DefaultImportTracker();
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}
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getTsProgram(): ts.Program { return this.tsProgram; }
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getTsOptionDiagnostics(cancellationToken?: ts.CancellationToken|
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undefined): ReadonlyArray<ts.Diagnostic> {
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return this.tsProgram.getOptionsDiagnostics(cancellationToken);
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}
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getNgOptionDiagnostics(cancellationToken?: ts.CancellationToken|
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undefined): ReadonlyArray<ts.Diagnostic|api.Diagnostic> {
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return this.constructionDiagnostics;
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}
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getTsSyntacticDiagnostics(
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sourceFile?: ts.SourceFile|undefined,
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cancellationToken?: ts.CancellationToken|undefined): ReadonlyArray<ts.Diagnostic> {
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return this.tsProgram.getSyntacticDiagnostics(sourceFile, cancellationToken);
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}
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getNgStructuralDiagnostics(cancellationToken?: ts.CancellationToken|
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undefined): ReadonlyArray<api.Diagnostic> {
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return [];
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}
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getTsSemanticDiagnostics(
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sourceFile?: ts.SourceFile|undefined,
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cancellationToken?: ts.CancellationToken|undefined): ReadonlyArray<ts.Diagnostic> {
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return this.tsProgram.getSemanticDiagnostics(sourceFile, cancellationToken);
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}
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getNgSemanticDiagnostics(
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fileName?: string|undefined, cancellationToken?: ts.CancellationToken|
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undefined): ReadonlyArray<ts.Diagnostic|api.Diagnostic> {
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const compilation = this.ensureAnalyzed();
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const diagnostics = [...compilation.diagnostics];
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if (!!this.options.fullTemplateTypeCheck) {
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const ctx = new TypeCheckContext(this.refEmitter !);
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compilation.typeCheck(ctx);
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diagnostics.push(...this.compileTypeCheckProgram(ctx));
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}
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if (this.entryPoint !== null && this.exportReferenceGraph !== null) {
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diagnostics.push(...checkForPrivateExports(
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this.entryPoint, this.tsProgram.getTypeChecker(), this.exportReferenceGraph));
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}
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return diagnostics;
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}
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async loadNgStructureAsync(): Promise<void> {
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if (this.compilation === undefined) {
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this.compilation = this.makeCompilation();
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}
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const analyzeSpan = this.perfRecorder.start('analyze');
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await Promise.all(this.tsProgram.getSourceFiles()
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.filter(file => !file.fileName.endsWith('.d.ts'))
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.map(file => {
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const analyzeFileSpan = this.perfRecorder.start('analyzeFile', file);
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let analysisPromise = this.compilation !.analyzeAsync(file);
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if (analysisPromise === undefined) {
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this.perfRecorder.stop(analyzeFileSpan);
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} else if (this.perfRecorder.enabled) {
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analysisPromise = analysisPromise.then(
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() => this.perfRecorder.stop(analyzeFileSpan));
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}
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return analysisPromise;
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})
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.filter((result): result is Promise<void> => result !== undefined));
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this.perfRecorder.stop(analyzeSpan);
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this.compilation.resolve();
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}
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listLazyRoutes(entryRoute?: string|undefined): api.LazyRoute[] {
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if (entryRoute) {
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// Note:
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// This resolution step is here to match the implementation of the old `AotCompilerHost` (see
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// https://github.com/angular/angular/blob/50732e156/packages/compiler-cli/src/transformers/compiler_host.ts#L175-L188).
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//
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// `@angular/cli` will always call this API with an absolute path, so the resolution step is
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// not necessary, but keeping it backwards compatible in case someone else is using the API.
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// Relative entry paths are disallowed.
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if (entryRoute.startsWith('.')) {
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throw new Error(
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`Failed to list lazy routes: Resolution of relative paths (${entryRoute}) is not supported.`);
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}
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// Non-relative entry paths fall into one of the following categories:
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// - Absolute system paths (e.g. `/foo/bar/my-project/my-module`), which are unaffected by the
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// logic below.
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// - Paths to enternal modules (e.g. `some-lib`).
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// - Paths mapped to directories in `tsconfig.json` (e.g. `shared/my-module`).
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// (See https://www.typescriptlang.org/docs/handbook/module-resolution.html#path-mapping.)
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//
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// In all cases above, the `containingFile` argument is ignored, so we can just take the first
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// of the root files.
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const containingFile = this.tsProgram.getRootFileNames()[0];
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const [entryPath, moduleName] = entryRoute.split('#');
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const resolved = ts.resolveModuleName(entryPath, containingFile, this.options, this.host);
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if (resolved.resolvedModule) {
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entryRoute = entryPointKeyFor(resolved.resolvedModule.resolvedFileName, moduleName);
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}
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}
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this.ensureAnalyzed();
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return this.routeAnalyzer !.listLazyRoutes(entryRoute);
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}
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getLibrarySummaries(): Map<string, api.LibrarySummary> {
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throw new Error('Method not implemented.');
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}
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getEmittedGeneratedFiles(): Map<string, GeneratedFile> {
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throw new Error('Method not implemented.');
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}
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getEmittedSourceFiles(): Map<string, ts.SourceFile> {
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throw new Error('Method not implemented.');
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}
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private ensureAnalyzed(): IvyCompilation {
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if (this.compilation === undefined) {
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const analyzeSpan = this.perfRecorder.start('analyze');
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this.compilation = this.makeCompilation();
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this.tsProgram.getSourceFiles()
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.filter(file => !file.fileName.endsWith('.d.ts'))
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.forEach(file => {
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const analyzeFileSpan = this.perfRecorder.start('analyzeFile', file);
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this.compilation !.analyzeSync(file);
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this.perfRecorder.stop(analyzeFileSpan);
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});
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this.perfRecorder.stop(analyzeSpan);
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this.compilation.resolve();
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}
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return this.compilation;
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}
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emit(opts?: {
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emitFlags?: api.EmitFlags,
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cancellationToken?: ts.CancellationToken,
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customTransformers?: api.CustomTransformers,
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emitCallback?: api.TsEmitCallback,
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mergeEmitResultsCallback?: api.TsMergeEmitResultsCallback
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}): ts.EmitResult {
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const emitCallback = opts && opts.emitCallback || defaultEmitCallback;
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const compilation = this.ensureAnalyzed();
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const writeFile: ts.WriteFileCallback =
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(fileName: string, data: string, writeByteOrderMark: boolean,
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onError: ((message: string) => void) | undefined,
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sourceFiles: ReadonlyArray<ts.SourceFile>| undefined) => {
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if (this.closureCompilerEnabled && fileName.endsWith('.js')) {
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data = nocollapseHack(data);
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}
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this.host.writeFile(fileName, data, writeByteOrderMark, onError, sourceFiles);
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};
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const customTransforms = opts && opts.customTransformers;
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const beforeTransforms = [
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ivyTransformFactory(
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compilation, this.reflector, this.importRewriter, this.defaultImportTracker, this.isCore,
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this.closureCompilerEnabled),
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aliasTransformFactory(compilation.exportStatements) as ts.TransformerFactory<ts.SourceFile>,
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this.defaultImportTracker.importPreservingTransformer(),
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];
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const afterDeclarationsTransforms = [
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declarationTransformFactory(compilation),
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];
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if (this.factoryToSourceInfo !== null) {
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beforeTransforms.push(
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generatedFactoryTransform(this.factoryToSourceInfo, this.importRewriter));
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}
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beforeTransforms.push(ivySwitchTransform);
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if (customTransforms && customTransforms.beforeTs) {
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beforeTransforms.push(...customTransforms.beforeTs);
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}
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const emitSpan = this.perfRecorder.start('emit');
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const emitResults: ts.EmitResult[] = [];
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for (const targetSourceFile of this.tsProgram.getSourceFiles()) {
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if (targetSourceFile.isDeclarationFile) {
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continue;
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}
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const fileEmitSpan = this.perfRecorder.start('emitFile', targetSourceFile);
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emitResults.push(emitCallback({
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targetSourceFile,
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program: this.tsProgram,
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host: this.host,
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options: this.options,
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emitOnlyDtsFiles: false, writeFile,
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customTransformers: {
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before: beforeTransforms,
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after: customTransforms && customTransforms.afterTs,
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afterDeclarations: afterDeclarationsTransforms,
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},
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}));
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this.perfRecorder.stop(fileEmitSpan);
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}
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this.perfRecorder.stop(emitSpan);
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if (this.perfTracker !== null && this.options.tracePerformance !== undefined) {
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this.perfTracker.serializeToFile(this.options.tracePerformance, this.host);
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}
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// Run the emit, including a custom transformer that will downlevel the Ivy decorators in code.
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return ((opts && opts.mergeEmitResultsCallback) || mergeEmitResults)(emitResults);
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}
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private compileTypeCheckProgram(ctx: TypeCheckContext): ReadonlyArray<ts.Diagnostic> {
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const host = new TypeCheckProgramHost(this.tsProgram, this.host, ctx);
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const auxProgram = ts.createProgram({
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host,
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rootNames: this.tsProgram.getRootFileNames(),
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oldProgram: this.tsProgram,
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options: this.options,
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});
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return auxProgram.getSemanticDiagnostics();
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}
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private makeCompilation(): IvyCompilation {
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const checker = this.tsProgram.getTypeChecker();
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let aliasGenerator: AliasGenerator|null = null;
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// Construct the ReferenceEmitter.
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if (this.fileToModuleHost === null || !this.options._useHostForImportGeneration) {
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// The CompilerHost doesn't have fileNameToModuleName, so build an NPM-centric reference
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// resolution strategy.
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this.refEmitter = new ReferenceEmitter([
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// First, try to use local identifiers if available.
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new LocalIdentifierStrategy(),
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// Next, attempt to use an absolute import.
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new AbsoluteModuleStrategy(this.tsProgram, checker, this.options, this.host),
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// Finally, check if the reference is being written into a file within the project's logical
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// file system, and use a relative import if so. If this fails, ReferenceEmitter will throw
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// an error.
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new LogicalProjectStrategy(checker, new LogicalFileSystem(this.rootDirs)),
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]);
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} else {
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// The CompilerHost supports fileNameToModuleName, so use that to emit imports.
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this.refEmitter = new ReferenceEmitter([
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// First, try to use local identifiers if available.
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new LocalIdentifierStrategy(),
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// Then use aliased references (this is a workaround to StrictDeps checks).
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new AliasStrategy(),
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// Then use fileNameToModuleName to emit imports.
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new FileToModuleStrategy(checker, this.fileToModuleHost),
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]);
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aliasGenerator = new AliasGenerator(this.fileToModuleHost);
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}
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const evaluator = new PartialEvaluator(this.reflector, checker);
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const depScopeReader =
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new MetadataDtsModuleScopeResolver(checker, this.reflector, aliasGenerator);
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const scopeRegistry =
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new LocalModuleScopeRegistry(depScopeReader, this.refEmitter, aliasGenerator);
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|
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// If a flat module entrypoint was specified, then track references via a `ReferenceGraph` in
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// order to produce proper diagnostics for incorrectly exported directives/pipes/etc. If there
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// is no flat module entrypoint then don't pay the cost of tracking references.
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let referencesRegistry: ReferencesRegistry;
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if (this.entryPoint !== null) {
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this.exportReferenceGraph = new ReferenceGraph();
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referencesRegistry = new ReferenceGraphAdapter(this.exportReferenceGraph);
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} else {
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referencesRegistry = new NoopReferencesRegistry();
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}
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this.routeAnalyzer = new NgModuleRouteAnalyzer(this.moduleResolver, evaluator);
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// Set up the IvyCompilation, which manages state for the Ivy transformer.
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const handlers = [
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new BaseDefDecoratorHandler(this.reflector, evaluator, this.isCore),
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new ComponentDecoratorHandler(
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this.reflector, evaluator, scopeRegistry, this.isCore, this.resourceManager,
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this.rootDirs, this.options.preserveWhitespaces || false,
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this.options.i18nUseExternalIds !== false, this.moduleResolver, this.cycleAnalyzer,
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this.refEmitter, this.defaultImportTracker),
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new DirectiveDecoratorHandler(
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this.reflector, evaluator, scopeRegistry, this.defaultImportTracker, this.isCore),
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new InjectableDecoratorHandler(
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this.reflector, this.defaultImportTracker, this.isCore,
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this.options.strictInjectionParameters || false),
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new NgModuleDecoratorHandler(
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this.reflector, evaluator, scopeRegistry, referencesRegistry, this.isCore,
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this.routeAnalyzer, this.refEmitter, this.defaultImportTracker),
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new PipeDecoratorHandler(
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this.reflector, evaluator, scopeRegistry, this.defaultImportTracker, this.isCore),
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];
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return new IvyCompilation(
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handlers, checker, this.reflector, this.importRewriter, this.perfRecorder,
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this.sourceToFactorySymbols);
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}
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|
private get reflector(): TypeScriptReflectionHost {
|
|
if (this._reflector === undefined) {
|
|
this._reflector = new TypeScriptReflectionHost(this.tsProgram.getTypeChecker());
|
|
}
|
|
return this._reflector;
|
|
}
|
|
|
|
private get coreImportsFrom(): ts.SourceFile|null {
|
|
if (this._coreImportsFrom === undefined) {
|
|
this._coreImportsFrom = this.isCore && getR3SymbolsFile(this.tsProgram) || null;
|
|
}
|
|
return this._coreImportsFrom;
|
|
}
|
|
|
|
private get isCore(): boolean {
|
|
if (this._isCore === undefined) {
|
|
this._isCore = isAngularCorePackage(this.tsProgram);
|
|
}
|
|
return this._isCore;
|
|
}
|
|
|
|
private get importRewriter(): ImportRewriter {
|
|
if (this._importRewriter === undefined) {
|
|
const coreImportsFrom = this.coreImportsFrom;
|
|
this._importRewriter = coreImportsFrom !== null ?
|
|
new R3SymbolsImportRewriter(coreImportsFrom.fileName) :
|
|
new NoopImportRewriter();
|
|
}
|
|
return this._importRewriter;
|
|
}
|
|
}
|
|
|
|
const defaultEmitCallback: api.TsEmitCallback =
|
|
({program, targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles,
|
|
customTransformers}) =>
|
|
program.emit(
|
|
targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers);
|
|
|
|
function mergeEmitResults(emitResults: ts.EmitResult[]): ts.EmitResult {
|
|
const diagnostics: ts.Diagnostic[] = [];
|
|
let emitSkipped = false;
|
|
const emittedFiles: string[] = [];
|
|
for (const er of emitResults) {
|
|
diagnostics.push(...er.diagnostics);
|
|
emitSkipped = emitSkipped || er.emitSkipped;
|
|
emittedFiles.push(...(er.emittedFiles || []));
|
|
}
|
|
|
|
return {diagnostics, emitSkipped, emittedFiles};
|
|
}
|
|
|
|
/**
|
|
* Find the 'r3_symbols.ts' file in the given `Program`, or return `null` if it wasn't there.
|
|
*/
|
|
function getR3SymbolsFile(program: ts.Program): ts.SourceFile|null {
|
|
return program.getSourceFiles().find(file => file.fileName.indexOf('r3_symbols.ts') >= 0) || null;
|
|
}
|
|
|
|
/**
|
|
* Determine if the given `Program` is @angular/core.
|
|
*/
|
|
function isAngularCorePackage(program: ts.Program): boolean {
|
|
// Look for its_just_angular.ts somewhere in the program.
|
|
const r3Symbols = getR3SymbolsFile(program);
|
|
if (r3Symbols === null) {
|
|
return false;
|
|
}
|
|
|
|
// Look for the constant ITS_JUST_ANGULAR in that file.
|
|
return r3Symbols.statements.some(stmt => {
|
|
// The statement must be a variable declaration statement.
|
|
if (!ts.isVariableStatement(stmt)) {
|
|
return false;
|
|
}
|
|
// It must be exported.
|
|
if (stmt.modifiers === undefined ||
|
|
!stmt.modifiers.some(mod => mod.kind === ts.SyntaxKind.ExportKeyword)) {
|
|
return false;
|
|
}
|
|
// It must declare ITS_JUST_ANGULAR.
|
|
return stmt.declarationList.declarations.some(decl => {
|
|
// The declaration must match the name.
|
|
if (!ts.isIdentifier(decl.name) || decl.name.text !== 'ITS_JUST_ANGULAR') {
|
|
return false;
|
|
}
|
|
// It must initialize the variable to true.
|
|
if (decl.initializer === undefined || decl.initializer.kind !== ts.SyntaxKind.TrueKeyword) {
|
|
return false;
|
|
}
|
|
// This definition matches.
|
|
return true;
|
|
});
|
|
});
|
|
}
|
|
|
|
export class ReferenceGraphAdapter implements ReferencesRegistry {
|
|
constructor(private graph: ReferenceGraph) {}
|
|
|
|
add(source: ts.Declaration, ...references: Reference<ts.Declaration>[]): void {
|
|
for (const {node} of references) {
|
|
let sourceFile = node.getSourceFile();
|
|
if (sourceFile === undefined) {
|
|
sourceFile = ts.getOriginalNode(node).getSourceFile();
|
|
}
|
|
|
|
// Only record local references (not references into .d.ts files).
|
|
if (sourceFile === undefined || !isDtsPath(sourceFile.fileName)) {
|
|
this.graph.add(source, node);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function shouldEnablePerfTracing(options: api.CompilerOptions): boolean {
|
|
return options.tracePerformance !== undefined;
|
|
}
|