328 lines
10 KiB
TypeScript
328 lines
10 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 {ParseSourceSpan} from '../../src/parse_util';
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import * as t from '../../src/render3/r3_ast';
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import {parseR3 as parse} from './view/util';
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class R3AstSourceSpans implements t.Visitor<void> {
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result: any[] = [];
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visitElement(element: t.Element) {
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this.result.push([
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'Element', humanizeSpan(element.sourceSpan), humanizeSpan(element.startSourceSpan),
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humanizeSpan(element.endSourceSpan)
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]);
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this.visitAll([
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element.attributes,
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element.inputs,
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element.outputs,
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element.references,
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element.children,
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]);
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}
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visitTemplate(template: t.Template) {
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this.result.push([
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'Template', humanizeSpan(template.sourceSpan), humanizeSpan(template.startSourceSpan),
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humanizeSpan(template.endSourceSpan)
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]);
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this.visitAll([
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template.attributes,
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template.inputs,
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template.outputs,
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template.templateAttrs,
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template.references,
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template.variables,
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template.children,
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]);
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}
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visitContent(content: t.Content) {
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this.result.push(['Content', humanizeSpan(content.sourceSpan)]);
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t.visitAll(this, content.attributes);
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}
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visitVariable(variable: t.Variable) {
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this.result.push(
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['Variable', humanizeSpan(variable.sourceSpan), humanizeSpan(variable.valueSpan)]);
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}
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visitReference(reference: t.Reference) {
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this.result.push(
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['Reference', humanizeSpan(reference.sourceSpan), humanizeSpan(reference.valueSpan)]);
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}
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visitTextAttribute(attribute: t.TextAttribute) {
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this.result.push(
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['TextAttribute', humanizeSpan(attribute.sourceSpan), humanizeSpan(attribute.valueSpan)]);
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}
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visitBoundAttribute(attribute: t.BoundAttribute) {
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this.result.push(
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['BoundAttribute', humanizeSpan(attribute.sourceSpan), humanizeSpan(attribute.valueSpan)]);
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}
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visitBoundEvent(event: t.BoundEvent) {
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this.result.push(
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['BoundEvent', humanizeSpan(event.sourceSpan), humanizeSpan(event.handlerSpan)]);
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}
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visitText(text: t.Text) { this.result.push(['Text', humanizeSpan(text.sourceSpan)]); }
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visitBoundText(text: t.BoundText) {
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this.result.push(['BoundText', humanizeSpan(text.sourceSpan)]);
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}
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visitIcu(icu: t.Icu) { return null; }
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private visitAll(nodes: t.Node[][]) { nodes.forEach(node => t.visitAll(this, node)); }
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}
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function humanizeSpan(span: ParseSourceSpan | null | undefined): string {
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if (span === null || span === undefined) {
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return `<empty>`;
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}
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return `${span.start.offset}:${span.end.offset}`;
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}
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function expectFromHtml(html: string) {
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const res = parse(html);
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return expectFromR3Nodes(res.nodes);
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}
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function expectFromR3Nodes(nodes: t.Node[]) {
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const humanizer = new R3AstSourceSpans();
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t.visitAll(humanizer, nodes);
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return expect(humanizer.result);
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}
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describe('R3 AST source spans', () => {
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describe('nodes without binding', () => {
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it('is correct for text nodes', () => {
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expectFromHtml('a').toEqual([
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['Text', '0:1'],
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]);
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});
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it('is correct for elements with attributes', () => {
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expectFromHtml('<div a="b"></div>').toEqual([
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['Element', '0:17', '0:11', '11:17'],
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['TextAttribute', '5:10', '8:9'],
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]);
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});
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it('is correct for elements with attributes without value', () => {
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expectFromHtml('<div a></div>').toEqual([
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['Element', '0:13', '0:7', '7:13'],
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['TextAttribute', '5:6', '<empty>'],
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]);
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});
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});
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describe('bound text nodes', () => {
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it('is correct for bound text nodes', () => {
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expectFromHtml('{{a}}').toEqual([
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['BoundText', '0:5'],
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]);
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});
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});
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describe('bound attributes', () => {
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it('is correct for bound properties', () => {
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expectFromHtml('<div [someProp]="v"></div>').toEqual([
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['Element', '0:26', '0:20', '20:26'],
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['BoundAttribute', '5:19', '17:18'],
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]);
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});
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it('is correct for bound properties without value', () => {
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expectFromHtml('<div [someProp]></div>').toEqual([
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['Element', '0:22', '0:16', '16:22'],
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['BoundAttribute', '5:15', '<empty>'],
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]);
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});
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it('is correct for bound properties via bind- ', () => {
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expectFromHtml('<div bind-prop="v"></div>').toEqual([
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['Element', '0:25', '0:19', '19:25'],
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['BoundAttribute', '5:18', '16:17'],
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]);
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});
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it('is correct for bound properties via {{...}}', () => {
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expectFromHtml('<div prop="{{v}}"></div>').toEqual([
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['Element', '0:24', '0:18', '18:24'],
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['BoundAttribute', '5:17', '11:16'],
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]);
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});
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});
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describe('templates', () => {
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it('is correct for * directives', () => {
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expectFromHtml('<div *ngIf></div>').toEqual([
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['Template', '0:11', '0:11', '11:17'],
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['TextAttribute', '5:10', '<empty>'],
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['Element', '0:17', '0:11', '11:17'],
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]);
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});
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it('is correct for <ng-template>', () => {
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expectFromHtml('<ng-template></ng-template>').toEqual([
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['Template', '0:13', '0:13', '13:27'],
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]);
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});
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it('is correct for reference via #...', () => {
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expectFromHtml('<ng-template #a></ng-template>').toEqual([
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['Template', '0:16', '0:16', '16:30'],
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['Reference', '13:15', '<empty>'],
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]);
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});
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it('is correct for reference with name', () => {
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expectFromHtml('<ng-template #a="b"></ng-template>').toEqual([
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['Template', '0:20', '0:20', '20:34'],
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['Reference', '13:19', '17:18'],
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]);
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});
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it('is correct for reference via ref-...', () => {
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expectFromHtml('<ng-template ref-a></ng-template>').toEqual([
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['Template', '0:19', '0:19', '19:33'],
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['Reference', '13:18', '<empty>'],
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]);
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});
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it('is correct for variables via let-...', () => {
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expectFromHtml('<ng-template let-a="b"></ng-template>').toEqual([
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['Template', '0:23', '0:23', '23:37'],
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['Variable', '13:22', '20:21'],
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]);
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});
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it('is correct for attributes', () => {
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expectFromHtml('<ng-template k1="v1"></ng-template>').toEqual([
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['Template', '0:21', '0:21', '21:35'],
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['TextAttribute', '13:20', '17:19'],
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]);
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});
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it('is correct for bound attributes', () => {
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expectFromHtml('<ng-template [k1]="v1"></ng-template>').toEqual([
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['Template', '0:23', '0:23', '23:37'],
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['BoundAttribute', '13:22', '19:21'],
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]);
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});
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});
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// TODO(joost): improve spans of nodes extracted from macrosyntax
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describe('inline templates', () => {
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it('is correct for attribute and bound attributes', () => {
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// Desugared form is
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// <ng-template ngFor [ngForOf]="items" let-item>
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// <div></div>
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// </ng-template>
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expectFromHtml('<div *ngFor="let item of items"></div>').toEqual([
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['Template', '0:32', '0:32', '32:38'],
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['TextAttribute', '5:31', '<empty>'],
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['BoundAttribute', '5:31', '25:30'], // *ngFor="let item of items" -> items
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['Variable', '13:22', '<empty>'], // let item
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['Element', '0:38', '0:32', '32:38'],
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]);
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// Note that this test exercises an *incorrect* usage of the ngFor
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// directive. There is a missing 'let' in the beginning of the expression
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// which causes the template to be desugared into
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// <ng-template [ngFor]="item" [ngForOf]="items">
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// <div></div>
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// </ng-template>
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expectFromHtml('<div *ngFor="item of items"></div>').toEqual([
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['Template', '0:28', '0:28', '28:34'],
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['BoundAttribute', '5:27', '13:17'], // ngFor="item of items" -> item
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['BoundAttribute', '5:27', '21:26'], // ngFor="item of items" -> items
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['Element', '0:34', '0:28', '28:34'],
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]);
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});
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it('is correct for variables via let ...', () => {
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expectFromHtml('<div *ngIf="let a=b"></div>').toEqual([
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['Template', '0:21', '0:21', '21:27'],
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['TextAttribute', '5:20', '<empty>'],
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['Variable', '12:19', '18:19'], // let a=b -> b
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['Element', '0:27', '0:21', '21:27'],
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]);
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});
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it('is correct for variables via as ...', () => {
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expectFromHtml('<div *ngIf="expr as local"></div>').toEqual([
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['Template', '0:27', '0:27', '27:33'],
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['BoundAttribute', '5:26', '12:16'], // ngIf="expr as local" -> expr
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['Variable', '6:25', '6:10'], // ngIf="expr as local -> ngIf
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['Element', '0:33', '0:27', '27:33'],
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]);
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});
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});
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describe('events', () => {
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it('is correct for event names case sensitive', () => {
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expectFromHtml('<div (someEvent)="v"></div>').toEqual([
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['Element', '0:27', '0:21', '21:27'],
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['BoundEvent', '5:20', '18:19'],
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]);
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});
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it('is correct for bound events via on-', () => {
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expectFromHtml('<div on-event="v"></div>').toEqual([
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['Element', '0:24', '0:18', '18:24'],
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['BoundEvent', '5:17', '15:16'],
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]);
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});
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it('is correct for bound events and properties via [(...)]', () => {
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expectFromHtml('<div [(prop)]="v"></div>').toEqual([
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['Element', '0:24', '0:18', '18:24'],
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['BoundAttribute', '5:17', '15:16'],
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['BoundEvent', '5:17', '15:16'],
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]);
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});
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it('is correct for bound events and properties via bindon-', () => {
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expectFromHtml('<div bindon-prop="v"></div>').toEqual([
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['Element', '0:27', '0:21', '21:27'],
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['BoundAttribute', '5:20', '18:19'],
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['BoundEvent', '5:20', '18:19'],
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]);
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});
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});
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describe('references', () => {
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it('is correct for references via #...', () => {
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expectFromHtml('<div #a></div>').toEqual([
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['Element', '0:14', '0:8', '8:14'],
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['Reference', '5:7', '<empty>'],
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]);
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});
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it('is correct for references with name', () => {
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expectFromHtml('<div #a="b"></div>').toEqual([
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['Element', '0:18', '0:12', '12:18'],
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['Reference', '5:11', '9:10'],
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]);
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});
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it('is correct for references via ref-', () => {
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expectFromHtml('<div ref-a></div>').toEqual([
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['Element', '0:17', '0:11', '11:17'],
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['Reference', '5:10', '<empty>'],
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]);
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});
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});
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});
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