103 lines
3.8 KiB
TypeScript
103 lines
3.8 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 * as tss from 'typescript/lib/tsserverlibrary';
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import {getTemplateCompletions} from './completions';
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import {getDefinitionAndBoundSpan, getTsDefinitionAndBoundSpan} from './definitions';
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import {getDeclarationDiagnostics, getTemplateDiagnostics, ngDiagnosticToTsDiagnostic, uniqueBySpan} from './diagnostics';
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import {getTemplateHover, getTsHover} from './hover';
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import * as ng from './types';
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import {TypeScriptServiceHost} from './typescript_host';
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/**
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* Create an instance of an Angular `LanguageService`.
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*
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* @publicApi
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*/
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export function createLanguageService(host: TypeScriptServiceHost) {
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return new LanguageServiceImpl(host);
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}
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class LanguageServiceImpl implements ng.LanguageService {
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constructor(private readonly host: TypeScriptServiceHost) {}
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getSemanticDiagnostics(fileName: string): tss.Diagnostic[] {
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const analyzedModules = this.host.getAnalyzedModules(); // same role as 'synchronizeHostData'
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const results: ng.Diagnostic[] = [];
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const templates = this.host.getTemplates(fileName);
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for (const template of templates) {
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const ast = this.host.getTemplateAst(template);
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if (ast) {
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results.push(...getTemplateDiagnostics(ast));
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}
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}
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const declarations = this.host.getDeclarations(fileName);
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if (declarations && declarations.length) {
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results.push(...getDeclarationDiagnostics(declarations, analyzedModules, this.host));
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}
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const sourceFile = fileName.endsWith('.ts') ? this.host.getSourceFile(fileName) : undefined;
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return uniqueBySpan(results).map(d => ngDiagnosticToTsDiagnostic(d, sourceFile));
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}
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getCompletionsAtPosition(
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fileName: string, position: number,
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options?: tss.GetCompletionsAtPositionOptions): tss.CompletionInfo|undefined {
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this.host.getAnalyzedModules(); // same role as 'synchronizeHostData'
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const ast = this.host.getTemplateAstAtPosition(fileName, position);
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if (!ast) {
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return;
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}
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const results = getTemplateCompletions(ast, position);
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if (!results || !results.length) {
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return;
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}
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return {
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isGlobalCompletion: false,
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isMemberCompletion: false,
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isNewIdentifierLocation: false,
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// Cast CompletionEntry.kind from ng.CompletionKind to ts.ScriptElementKind
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entries: results as unknown as ts.CompletionEntry[],
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};
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}
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getDefinitionAndBoundSpan(fileName: string, position: number): tss.DefinitionInfoAndBoundSpan
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|undefined {
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this.host.getAnalyzedModules(); // same role as 'synchronizeHostData'
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const templateInfo = this.host.getTemplateAstAtPosition(fileName, position);
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if (templateInfo) {
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return getDefinitionAndBoundSpan(templateInfo, position);
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}
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// Attempt to get Angular-specific definitions in a TypeScript file, like templates defined
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// in a `templateUrl` property.
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if (fileName.endsWith('.ts')) {
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const sf = this.host.getSourceFile(fileName);
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if (sf) {
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return getTsDefinitionAndBoundSpan(sf, position, this.host.tsLsHost);
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}
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}
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}
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getQuickInfoAtPosition(fileName: string, position: number): tss.QuickInfo|undefined {
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const analyzedModules = this.host.getAnalyzedModules(); // same role as 'synchronizeHostData'
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const templateInfo = this.host.getTemplateAstAtPosition(fileName, position);
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if (templateInfo) {
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return getTemplateHover(templateInfo, position, analyzedModules);
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}
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// Attempt to get Angular-specific hover information in a TypeScript file, the NgModule a
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// directive belongs to.
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const declarations = this.host.getDeclarations(fileName);
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return getTsHover(position, declarations, analyzedModules);
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}
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}
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