30c82cd177
Source files that contain directives or components that need an inline type constructor or inline template type-check block would always be considered as affected in incremental rebuilds. The inline operations cause the source file to be updated in the TypeScript program that is created for template type-checking, which becomes the reuse program in a subsequent incremental rebuild. In an incremental rebuild, the source files from the new user program are compared to those from the reuse program. The updated source files are not the same as the original source file from the user program, so the incremental engine would mark the file which needed inline operations as affected. This prevents incremental reuse for these files, causing sub-optimal rebuild performance. This commit attaches the original source file for source files that have been updated with inline operations, such that the incremental engine is able to compare source files using the original source file. Fixes #42543 PR Close #42759
579 lines
24 KiB
TypeScript
579 lines
24 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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 {AbsoluteSourceSpan, AST, ParseSourceSpan, TmplAstBoundEvent, TmplAstNode} from '@angular/compiler';
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import {CompilerOptions, ConfigurationHost, readConfiguration} from '@angular/compiler-cli';
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import {NgCompiler} from '@angular/compiler-cli/src/ngtsc/core';
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import {ErrorCode, ngErrorCode} from '@angular/compiler-cli/src/ngtsc/diagnostics';
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import {absoluteFrom, absoluteFromSourceFile, AbsoluteFsPath} from '@angular/compiler-cli/src/ngtsc/file_system';
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import {PerfPhase} from '@angular/compiler-cli/src/ngtsc/perf';
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import {FileUpdate, ProgramDriver} from '@angular/compiler-cli/src/ngtsc/program_driver';
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import {isNamedClassDeclaration} from '@angular/compiler-cli/src/ngtsc/reflection';
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import {TypeCheckShimGenerator} from '@angular/compiler-cli/src/ngtsc/typecheck';
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import {OptimizeFor} from '@angular/compiler-cli/src/ngtsc/typecheck/api';
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import {findFirstMatchingNode} from '@angular/compiler-cli/src/ngtsc/typecheck/src/comments';
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import * as ts from 'typescript/lib/tsserverlibrary';
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import {GetComponentLocationsForTemplateResponse, GetTcbResponse} from '../api';
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import {LanguageServiceAdapter, LSParseConfigHost} from './adapters';
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import {CompilerFactory} from './compiler_factory';
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import {CompletionBuilder, CompletionNodeContext} from './completions';
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import {DefinitionBuilder} from './definitions';
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import {QuickInfoBuilder} from './quick_info';
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import {ReferencesBuilder, RenameBuilder} from './references_and_rename';
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import {createLocationKey} from './references_and_rename_utils';
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import {getSignatureHelp} from './signature_help';
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import {getTargetAtPosition, TargetContext, TargetNodeKind} from './template_target';
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import {findTightestNode, getClassDeclFromDecoratorProp, getPropertyAssignmentFromValue} from './ts_utils';
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import {getTemplateInfoAtPosition, isTypeScriptFile} from './utils';
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interface LanguageServiceConfig {
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/**
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* If true, enable `strictTemplates` in Angular compiler options regardless
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* of its value in tsconfig.json.
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*/
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forceStrictTemplates?: true;
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}
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export class LanguageService {
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private options: CompilerOptions;
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readonly compilerFactory: CompilerFactory;
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private readonly programDriver: ProgramDriver;
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private readonly adapter: LanguageServiceAdapter;
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private readonly parseConfigHost: LSParseConfigHost;
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constructor(
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private readonly project: ts.server.Project,
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private readonly tsLS: ts.LanguageService,
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private readonly config: LanguageServiceConfig,
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) {
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this.parseConfigHost = new LSParseConfigHost(project.projectService.host);
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this.options = parseNgCompilerOptions(project, this.parseConfigHost, config);
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logCompilerOptions(project, this.options);
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this.programDriver = createProgramDriver(project);
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this.adapter = new LanguageServiceAdapter(project);
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this.compilerFactory = new CompilerFactory(this.adapter, this.programDriver, this.options);
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this.watchConfigFile(project);
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}
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getCompilerOptions(): CompilerOptions {
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return this.options;
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}
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getSemanticDiagnostics(fileName: string): ts.Diagnostic[] {
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return this.withCompilerAndPerfTracing(PerfPhase.LsDiagnostics, (compiler) => {
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const ttc = compiler.getTemplateTypeChecker();
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const diagnostics: ts.Diagnostic[] = [];
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if (isTypeScriptFile(fileName)) {
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const program = compiler.getCurrentProgram();
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const sourceFile = program.getSourceFile(fileName);
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if (sourceFile) {
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const ngDiagnostics = compiler.getDiagnosticsForFile(sourceFile, OptimizeFor.SingleFile);
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// There are several kinds of diagnostics returned by `NgCompiler` for a source file:
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//
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// 1. Angular-related non-template diagnostics from decorated classes within that
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// file.
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// 2. Template diagnostics for components with direct inline templates (a string
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// literal).
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// 3. Template diagnostics for components with indirect inline templates (templates
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// computed
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// by expression).
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// 4. Template diagnostics for components with external templates.
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//
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// When showing diagnostics for a TS source file, we want to only include kinds 1 and
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// 2 - those diagnostics which are reported at a location within the TS file itself.
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// Diagnostics for external templates will be shown when editing that template file
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// (the `else` block) below.
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//
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// Currently, indirect inline template diagnostics (kind 3) are not shown at all by
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// the Language Service, because there is no sensible location in the user's code for
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// them. Such templates are an edge case, though, and should not be common.
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//
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// TODO(alxhub): figure out a good user experience for indirect template diagnostics
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// and show them from within the Language Service.
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diagnostics.push(...ngDiagnostics.filter(
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diag => diag.file !== undefined && diag.file.fileName === sourceFile.fileName));
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}
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} else {
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const components = compiler.getComponentsWithTemplateFile(fileName);
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for (const component of components) {
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if (ts.isClassDeclaration(component)) {
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diagnostics.push(...ttc.getDiagnosticsForComponent(component));
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}
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}
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}
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return diagnostics;
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});
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}
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getDefinitionAndBoundSpan(fileName: string, position: number): ts.DefinitionInfoAndBoundSpan
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|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsDefinition, (compiler) => {
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if (!isInAngularContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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return new DefinitionBuilder(this.tsLS, compiler, this.programDriver)
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.getDefinitionAndBoundSpan(fileName, position);
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});
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}
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getTypeDefinitionAtPosition(fileName: string, position: number):
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readonly ts.DefinitionInfo[]|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsDefinition, (compiler) => {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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return new DefinitionBuilder(this.tsLS, compiler, this.programDriver)
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.getTypeDefinitionsAtPosition(fileName, position);
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});
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}
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getQuickInfoAtPosition(fileName: string, position: number): ts.QuickInfo|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsQuickInfo, (compiler) => {
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return this.getQuickInfoAtPositionImpl(fileName, position, compiler);
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});
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}
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private getQuickInfoAtPositionImpl(
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fileName: string,
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position: number,
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compiler: NgCompiler,
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): ts.QuickInfo|undefined {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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const templateInfo = getTemplateInfoAtPosition(fileName, position, compiler);
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if (templateInfo === undefined) {
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return undefined;
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}
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const positionDetails = getTargetAtPosition(templateInfo.template, position);
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if (positionDetails === null) {
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return undefined;
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}
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// Because we can only show 1 quick info, just use the bound attribute if the target is a two
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// way binding. We may consider concatenating additional display parts from the other target
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// nodes or representing the two way binding in some other manner in the future.
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const node = positionDetails.context.kind === TargetNodeKind.TwoWayBindingContext ?
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positionDetails.context.nodes[0] :
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positionDetails.context.node;
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return new QuickInfoBuilder(this.tsLS, compiler, templateInfo.component, node).get();
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}
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getReferencesAtPosition(fileName: string, position: number): ts.ReferenceEntry[]|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsReferencesAndRenames, (compiler) => {
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const results = new ReferencesBuilder(this.programDriver, this.tsLS, compiler)
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.getReferencesAtPosition(fileName, position);
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return results === undefined ? undefined : getUniqueLocations(results);
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});
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}
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getRenameInfo(fileName: string, position: number): ts.RenameInfo {
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return this.withCompilerAndPerfTracing(PerfPhase.LsReferencesAndRenames, (compiler) => {
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const renameInfo = new RenameBuilder(this.programDriver, this.tsLS, compiler)
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.getRenameInfo(absoluteFrom(fileName), position);
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if (!renameInfo.canRename) {
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return renameInfo;
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}
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const quickInfo = this.getQuickInfoAtPositionImpl(fileName, position, compiler) ??
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this.tsLS.getQuickInfoAtPosition(fileName, position);
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const kind = quickInfo?.kind ?? ts.ScriptElementKind.unknown;
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const kindModifiers = quickInfo?.kindModifiers ?? ts.ScriptElementKind.unknown;
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return {...renameInfo, kind, kindModifiers};
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});
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}
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findRenameLocations(fileName: string, position: number): readonly ts.RenameLocation[]|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsReferencesAndRenames, (compiler) => {
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const results = new RenameBuilder(this.programDriver, this.tsLS, compiler)
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.findRenameLocations(fileName, position);
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return results === null ? undefined : getUniqueLocations(results);
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});
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}
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private getCompletionBuilder(fileName: string, position: number, compiler: NgCompiler):
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CompletionBuilder<TmplAstNode|AST>|null {
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const templateInfo = getTemplateInfoAtPosition(fileName, position, compiler);
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if (templateInfo === undefined) {
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return null;
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}
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const positionDetails = getTargetAtPosition(templateInfo.template, position);
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if (positionDetails === null) {
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return null;
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}
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// For two-way bindings, we actually only need to be concerned with the bound attribute because
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// the bindings in the template are written with the attribute name, not the event name.
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const node = positionDetails.context.kind === TargetNodeKind.TwoWayBindingContext ?
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positionDetails.context.nodes[0] :
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positionDetails.context.node;
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return new CompletionBuilder(
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this.tsLS, compiler, templateInfo.component, node, positionDetails);
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}
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getCompletionsAtPosition(
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fileName: string, position: number, options: ts.GetCompletionsAtPositionOptions|undefined):
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ts.WithMetadata<ts.CompletionInfo>|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsCompletions, (compiler) => {
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return this.getCompletionsAtPositionImpl(fileName, position, options, compiler);
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});
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}
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private getCompletionsAtPositionImpl(
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fileName: string, position: number, options: ts.GetCompletionsAtPositionOptions|undefined,
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compiler: NgCompiler): ts.WithMetadata<ts.CompletionInfo>|undefined {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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const builder = this.getCompletionBuilder(fileName, position, compiler);
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if (builder === null) {
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return undefined;
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}
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return builder.getCompletionsAtPosition(options);
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}
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getCompletionEntryDetails(
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fileName: string, position: number, entryName: string,
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formatOptions: ts.FormatCodeOptions|ts.FormatCodeSettings|undefined,
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preferences: ts.UserPreferences|undefined,
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data: ts.CompletionEntryData|undefined): ts.CompletionEntryDetails|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsCompletions, (compiler) => {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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const builder = this.getCompletionBuilder(fileName, position, compiler);
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if (builder === null) {
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return undefined;
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}
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return builder.getCompletionEntryDetails(entryName, formatOptions, preferences, data);
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});
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}
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getSignatureHelpItems(fileName: string, position: number, options?: ts.SignatureHelpItemsOptions):
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ts.SignatureHelpItems|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsSignatureHelp, compiler => {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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return getSignatureHelp(compiler, this.tsLS, fileName, position, options);
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return undefined;
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});
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}
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getCompletionEntrySymbol(fileName: string, position: number, entryName: string): ts.Symbol
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|undefined {
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return this.withCompilerAndPerfTracing(PerfPhase.LsCompletions, (compiler) => {
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if (!isTemplateContext(compiler.getCurrentProgram(), fileName, position)) {
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return undefined;
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}
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const builder = this.getCompletionBuilder(fileName, position, compiler);
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if (builder === null) {
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return undefined;
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}
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const result = builder.getCompletionEntrySymbol(entryName);
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return result;
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});
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}
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getComponentLocationsForTemplate(fileName: string): GetComponentLocationsForTemplateResponse {
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return this.withCompilerAndPerfTracing<GetComponentLocationsForTemplateResponse>(
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PerfPhase.LsComponentLocations, (compiler) => {
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const components = compiler.getComponentsWithTemplateFile(fileName);
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const componentDeclarationLocations: ts.DocumentSpan[] =
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Array.from(components.values()).map(c => {
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let contextSpan: ts.TextSpan|undefined = undefined;
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let textSpan: ts.TextSpan;
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if (isNamedClassDeclaration(c)) {
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textSpan = ts.createTextSpanFromBounds(c.name.getStart(), c.name.getEnd());
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contextSpan = ts.createTextSpanFromBounds(c.getStart(), c.getEnd());
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} else {
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textSpan = ts.createTextSpanFromBounds(c.getStart(), c.getEnd());
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}
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return {
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fileName: c.getSourceFile().fileName,
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textSpan,
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contextSpan,
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};
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});
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return componentDeclarationLocations;
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});
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}
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getTcb(fileName: string, position: number): GetTcbResponse|undefined {
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return this.withCompilerAndPerfTracing<GetTcbResponse|undefined>(PerfPhase.LsTcb, compiler => {
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const templateInfo = getTemplateInfoAtPosition(fileName, position, compiler);
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if (templateInfo === undefined) {
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return undefined;
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}
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const tcb = compiler.getTemplateTypeChecker().getTypeCheckBlock(templateInfo.component);
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if (tcb === null) {
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return undefined;
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}
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const sf = tcb.getSourceFile();
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let selections: ts.TextSpan[] = [];
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const target = getTargetAtPosition(templateInfo.template, position);
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if (target !== null) {
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let selectionSpans: Array<ParseSourceSpan|AbsoluteSourceSpan>;
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if ('nodes' in target.context) {
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selectionSpans = target.context.nodes.map(n => n.sourceSpan);
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} else {
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selectionSpans = [target.context.node.sourceSpan];
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}
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const selectionNodes: ts.Node[] =
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selectionSpans
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.map(s => findFirstMatchingNode(tcb, {
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withSpan: s,
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filter: (node: ts.Node): node is ts.Node => true,
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}))
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.filter((n): n is ts.Node => n !== null);
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selections = selectionNodes.map(n => {
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return {
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start: n.getStart(sf),
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length: n.getEnd() - n.getStart(sf),
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};
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});
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}
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return {
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fileName: sf.fileName,
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content: sf.getFullText(),
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selections,
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};
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});
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}
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/**
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* Provides an instance of the `NgCompiler` and traces perf results. Perf results are logged only
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* if the log level is verbose or higher. This method is intended to be called once per public
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* method call.
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*
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* Here is an example of the log output.
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*
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* Perf 245 [16:16:39.353] LanguageService#getQuickInfoAtPosition(): {"events":{},"phases":{
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* "Unaccounted":379,"TtcSymbol":4},"memory":{}}
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*
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* Passing name of caller instead of using `arguments.caller` because 'caller', 'callee', and
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* 'arguments' properties may not be accessed in strict mode.
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*
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* @param phase the `PerfPhase` to execute the `p` callback in
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* @param p callback to be run synchronously with an instance of the `NgCompiler` as argument
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* @return the result of running the `p` callback
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*/
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private withCompilerAndPerfTracing<T>(phase: PerfPhase, p: (compiler: NgCompiler) => T): T {
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const compiler = this.compilerFactory.getOrCreate();
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const result = compiler.perfRecorder.inPhase(phase, () => p(compiler));
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const logger = this.project.projectService.logger;
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if (logger.hasLevel(ts.server.LogLevel.verbose)) {
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logger.perftrc(`LanguageService#${PerfPhase[phase]}: ${
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JSON.stringify(compiler.perfRecorder.finalize())}`);
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}
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return result;
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}
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getCompilerOptionsDiagnostics(): ts.Diagnostic[] {
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const project = this.project;
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if (!(project instanceof ts.server.ConfiguredProject)) {
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return [];
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}
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return this.withCompilerAndPerfTracing(PerfPhase.LsDiagnostics, (compiler) => {
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const diagnostics: ts.Diagnostic[] = [];
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const configSourceFile = ts.readJsonConfigFile(
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project.getConfigFilePath(), (path: string) => project.readFile(path));
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if (!this.options.strictTemplates && !this.options.fullTemplateTypeCheck) {
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diagnostics.push({
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messageText: 'Some language features are not available. ' +
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'To access all features, enable `strictTemplates` in `angularCompilerOptions`.',
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category: ts.DiagnosticCategory.Suggestion,
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code: ngErrorCode(ErrorCode.SUGGEST_STRICT_TEMPLATES),
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file: configSourceFile,
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start: undefined,
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length: undefined,
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});
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}
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diagnostics.push(...compiler.getOptionDiagnostics());
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return diagnostics;
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});
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}
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private watchConfigFile(project: ts.server.Project) {
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// TODO: Check the case when the project is disposed. An InferredProject
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// could be disposed when a tsconfig.json is added to the workspace,
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// in which case it becomes a ConfiguredProject (or vice-versa).
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// We need to make sure that the FileWatcher is closed.
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if (!(project instanceof ts.server.ConfiguredProject)) {
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return;
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}
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const {host} = project.projectService;
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host.watchFile(
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project.getConfigFilePath(), (fileName: string, eventKind: ts.FileWatcherEventKind) => {
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project.log(`Config file changed: ${fileName}`);
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if (eventKind === ts.FileWatcherEventKind.Changed) {
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this.options = parseNgCompilerOptions(project, this.parseConfigHost, this.config);
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logCompilerOptions(project, this.options);
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}
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});
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}
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}
|
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|
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function logCompilerOptions(project: ts.server.Project, options: CompilerOptions) {
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const {logger} = project.projectService;
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const projectName = project.getProjectName();
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logger.info(`Angular compiler options for ${projectName}: ` + JSON.stringify(options, null, 2));
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}
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|
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function parseNgCompilerOptions(
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project: ts.server.Project, host: ConfigurationHost,
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config: LanguageServiceConfig): CompilerOptions {
|
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if (!(project instanceof ts.server.ConfiguredProject)) {
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return {};
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}
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const {options, errors} =
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readConfiguration(project.getConfigFilePath(), /* existingOptions */ undefined, host);
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if (errors.length > 0) {
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project.setProjectErrors(errors);
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}
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// Projects loaded into the Language Service often include test files which are not part of the
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// app's main compilation unit, and these test files often include inline NgModules that declare
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// components from the app. These declarations conflict with the main declarations of such
|
|
// components in the app's NgModules. This conflict is not normally present during regular
|
|
// compilation because the app and the tests are part of separate compilation units.
|
|
//
|
|
// As a temporary mitigation of this problem, we instruct the compiler to ignore classes which
|
|
// are not exported. In many cases, this ensures the test NgModules are ignored by the compiler
|
|
// and only the real component declaration is used.
|
|
options.compileNonExportedClasses = false;
|
|
|
|
// If `forceStrictTemplates` is true, always enable `strictTemplates`
|
|
// regardless of its value in tsconfig.json.
|
|
if (config.forceStrictTemplates === true) {
|
|
options.strictTemplates = true;
|
|
}
|
|
|
|
return options;
|
|
}
|
|
|
|
function createProgramDriver(project: ts.server.Project): ProgramDriver {
|
|
return {
|
|
supportsInlineOperations: false,
|
|
getProgram(): ts.Program {
|
|
const program = project.getLanguageService().getProgram();
|
|
if (!program) {
|
|
throw new Error('Language service does not have a program!');
|
|
}
|
|
return program;
|
|
},
|
|
updateFiles(contents: Map<AbsoluteFsPath, FileUpdate>) {
|
|
for (const [fileName, {newText}] of contents) {
|
|
const scriptInfo = getOrCreateTypeCheckScriptInfo(project, fileName);
|
|
const snapshot = scriptInfo.getSnapshot();
|
|
const length = snapshot.getLength();
|
|
scriptInfo.editContent(0, length, newText);
|
|
}
|
|
},
|
|
getSourceFileVersion(sf: ts.SourceFile): string {
|
|
return project.getScriptVersion(sf.fileName);
|
|
}
|
|
};
|
|
}
|
|
|
|
function getOrCreateTypeCheckScriptInfo(
|
|
project: ts.server.Project, tcf: string): ts.server.ScriptInfo {
|
|
// First check if there is already a ScriptInfo for the tcf
|
|
const {projectService} = project;
|
|
let scriptInfo = projectService.getScriptInfo(tcf);
|
|
if (!scriptInfo) {
|
|
// ScriptInfo needs to be opened by client to be able to set its user-defined
|
|
// content. We must also provide file content, otherwise the service will
|
|
// attempt to fetch the content from disk and fail.
|
|
scriptInfo = projectService.getOrCreateScriptInfoForNormalizedPath(
|
|
ts.server.toNormalizedPath(tcf),
|
|
true, // openedByClient
|
|
'', // fileContent
|
|
// script info added by plugins should be marked as external, see
|
|
// https://github.com/microsoft/TypeScript/blob/b217f22e798c781f55d17da72ed099a9dee5c650/src/compiler/program.ts#L1897-L1899
|
|
ts.ScriptKind.External, // scriptKind
|
|
);
|
|
if (!scriptInfo) {
|
|
throw new Error(`Failed to create script info for ${tcf}`);
|
|
}
|
|
}
|
|
// Add ScriptInfo to project if it's missing. A ScriptInfo needs to be part of
|
|
// the project so that it becomes part of the program.
|
|
if (!project.containsScriptInfo(scriptInfo)) {
|
|
project.addRoot(scriptInfo);
|
|
}
|
|
return scriptInfo;
|
|
}
|
|
|
|
function isTemplateContext(program: ts.Program, fileName: string, position: number): boolean {
|
|
if (!isTypeScriptFile(fileName)) {
|
|
// If we aren't in a TS file, we must be in an HTML file, which we treat as template context
|
|
return true;
|
|
}
|
|
|
|
const node = findTightestNodeAtPosition(program, fileName, position);
|
|
if (node === undefined) {
|
|
return false;
|
|
}
|
|
|
|
let asgn = getPropertyAssignmentFromValue(node, 'template');
|
|
if (asgn === null) {
|
|
return false;
|
|
}
|
|
return getClassDeclFromDecoratorProp(asgn) !== null;
|
|
}
|
|
|
|
function isInAngularContext(program: ts.Program, fileName: string, position: number) {
|
|
if (!isTypeScriptFile(fileName)) {
|
|
return true;
|
|
}
|
|
|
|
const node = findTightestNodeAtPosition(program, fileName, position);
|
|
if (node === undefined) {
|
|
return false;
|
|
}
|
|
|
|
const asgn = getPropertyAssignmentFromValue(node, 'template') ??
|
|
getPropertyAssignmentFromValue(node, 'templateUrl') ??
|
|
getPropertyAssignmentFromValue(node.parent, 'styleUrls');
|
|
return asgn !== null && getClassDeclFromDecoratorProp(asgn) !== null;
|
|
}
|
|
|
|
function findTightestNodeAtPosition(program: ts.Program, fileName: string, position: number) {
|
|
const sourceFile = program.getSourceFile(fileName);
|
|
if (sourceFile === undefined) {
|
|
return undefined;
|
|
}
|
|
|
|
return findTightestNode(sourceFile, position);
|
|
}
|
|
|
|
function getUniqueLocations<T extends ts.DocumentSpan>(locations: readonly T[]): T[] {
|
|
const uniqueLocations: Map<string, T> = new Map();
|
|
for (const location of locations) {
|
|
uniqueLocations.set(createLocationKey(location), location);
|
|
}
|
|
return Array.from(uniqueLocations.values());
|
|
}
|