feat(language-service): add services to support editors (#12987)

modules/@angular/language-service/src/common.ts

@@ -0,0 +1,53 @@
+/**
+ * @license
+ * Copyright Google Inc. 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 {CompileDirectiveMetadata, CompileDirectiveSummary, CompilePipeSummary} from '@angular/compiler';
+
+import {Parser} from '@angular/compiler/src/expression_parser/parser';
+import {Node as HtmlAst} from '@angular/compiler/src/ml_parser/ast';
+import {ParseError} from '@angular/compiler/src/parse_util';
+import {CssSelector} from '@angular/compiler/src/selector';
+import {TemplateAst} from '@angular/compiler/src/template_parser/template_ast';
+
+import {Diagnostic, TemplateSource} from './types';
+
+export interface AstResult {
+  htmlAst?: HtmlAst[];
+  templateAst?: TemplateAst[];
+  directive?: CompileDirectiveMetadata;
+  directives?: CompileDirectiveSummary[];
+  pipes?: CompilePipeSummary[];
+  parseErrors?: ParseError[];
+  expressionParser?: Parser;
+  errors?: Diagnostic[];
+}
+
+export interface TemplateInfo {
+  position?: number;
+  fileName?: string;
+  template: TemplateSource;
+  htmlAst: HtmlAst[];
+  directive: CompileDirectiveMetadata;
+  directives: CompileDirectiveSummary[];
+  pipes: CompilePipeSummary[];
+  templateAst: TemplateAst[];
+  expressionParser: Parser;
+}
+
+export interface AttrInfo {
+  name: string;
+  input?: boolean;
+  output?: boolean;
+  template?: boolean;
+  fromHtml?: boolean;
+}
+
+export type SelectorInfo = {
+  selectors: CssSelector[],
+  map: Map<CssSelector, CompileDirectiveSummary>
+};