de795ea233
TypeScript compiler will now build to ES2015 code and modules. Babili is used to minify ES2015 code, providing an initial optimization that we couldn't previously get just from Uglify. Uses Babel to convert ES2015 to UMD/ES5 code, and Uglify to minimize the output.
73 lines
2.1 KiB
TypeScript
73 lines
2.1 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 {Attribute, Comment, Element, Expansion, ExpansionCase, Node, Text, Visitor, visitAll} from '@angular/compiler';
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import {AstPath} from './ast_path';
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import {inSpan, spanOf} from './utils';
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export class HtmlAstPath extends AstPath<Node> {
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constructor(ast: Node[], public position: number) { super(buildPath(ast, position)); }
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}
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function buildPath(ast: Node[], position: number): Node[] {
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let visitor = new HtmlAstPathBuilder(position);
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visitAll(visitor, ast);
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return visitor.getPath();
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}
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export class ChildVisitor implements Visitor {
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constructor(private visitor?: Visitor) {}
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visitElement(ast: Element, context: any): any {
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this.visitChildren(context, visit => {
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visit(ast.attrs);
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visit(ast.children);
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});
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}
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visitAttribute(ast: Attribute, context: any): any {}
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visitText(ast: Text, context: any): any {}
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visitComment(ast: Comment, context: any): any {}
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visitExpansion(ast: Expansion, context: any): any {
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return this.visitChildren(context, visit => { visit(ast.cases); });
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}
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visitExpansionCase(ast: ExpansionCase, context: any): any {}
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private visitChildren<T extends Node>(
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context: any, cb: (visit: (<V extends Node>(children: V[]|undefined) => void)) => void) {
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const visitor = this.visitor || this;
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let results: any[][] = [];
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function visit<T extends Node>(children: T[] | undefined) {
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if (children) results.push(visitAll(visitor, children, context));
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}
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cb(visit);
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return [].concat.apply([], results);
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}
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}
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class HtmlAstPathBuilder extends ChildVisitor {
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private path: Node[] = [];
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constructor(private position: number) { super(); }
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visit(ast: Node, context: any): any {
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let span = spanOf(ast);
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if (inSpan(this.position, span)) {
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this.path.push(ast);
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} else {
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// Returning a value here will result in the children being skipped.
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return true;
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}
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}
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getPath(): Node[] { return this.path; }
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}
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