angular-cn/packages/language-service/ivy/language_service.ts

68 lines
2.4 KiB
TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {CompilerOptions, createNgCompilerOptions} from '@angular/compiler-cli';
import * as ts from 'typescript/lib/tsserverlibrary';
import {Compiler} from './compiler/compiler';
export class LanguageService {
private options: CompilerOptions;
private readonly compiler: Compiler;
constructor(project: ts.server.Project, private readonly tsLS: ts.LanguageService) {
this.options = parseNgCompilerOptions(project);
this.watchConfigFile(project);
this.compiler = new Compiler(project, this.options);
}
getSemanticDiagnostics(fileName: string): ts.Diagnostic[] {
const program = this.compiler.analyze();
if (!program) {
return [];
}
const sourceFile = program.getSourceFile(fileName);
if (!sourceFile) {
return [];
}
return this.compiler.getDiagnostics(sourceFile);
}
private watchConfigFile(project: ts.server.Project) {
// TODO: Check the case when the project is disposed. An InferredProject
// could be disposed when a tsconfig.json is added to the workspace,
// in which case it becomes a ConfiguredProject (or vice-versa).
// We need to make sure that the FileWatcher is closed.
if (!(project instanceof ts.server.ConfiguredProject)) {
return;
}
const {host} = project.projectService;
host.watchFile(
project.getConfigFilePath(), (fileName: string, eventKind: ts.FileWatcherEventKind) => {
project.log(`Config file changed: ${fileName}`);
if (eventKind === ts.FileWatcherEventKind.Changed) {
this.options = parseNgCompilerOptions(project);
this.compiler.setCompilerOptions(this.options);
}
});
}
}
export function parseNgCompilerOptions(project: ts.server.Project): CompilerOptions {
let config = {};
if (project instanceof ts.server.ConfiguredProject) {
const configPath = project.getConfigFilePath();
const result = ts.readConfigFile(configPath, path => project.readFile(path));
if (result.error) {
project.error(ts.flattenDiagnosticMessageText(result.error.messageText, '\n'));
}
config = result.config || config;
}
const basePath = project.getCurrentDirectory();
return createNgCompilerOptions(basePath, config, project.getCompilationSettings());
}