141 lines
5.0 KiB
TypeScript
141 lines
5.0 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 {ParseLocation, ParseSourceFile, ParseSourceSpan} from '@angular/compiler';
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import {EmitterVisitorContext} from '@angular/compiler/src/output/abstract_emitter';
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import {SourceMap} from '@angular/compiler/src/output/source_map';
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import {extractSourceMap, originalPositionFor} from './source_map_util';
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export function main() {
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describe('AbstractEmitter', () => {
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describe('EmitterVisitorContext', () => {
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const fileA = new ParseSourceFile('a0a1a2a3a4a5a6a7a8a9', 'a.js');
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const fileB = new ParseSourceFile('b0b1b2b3b4b5b6b7b8b9', 'b.js');
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let ctx: EmitterVisitorContext;
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beforeEach(() => { ctx = EmitterVisitorContext.createRoot(); });
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it('should add source files to the source map', () => {
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ctx.print(createSourceSpan(fileA, 0), 'o0');
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ctx.print(createSourceSpan(fileA, 1), 'o1');
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ctx.print(createSourceSpan(fileB, 0), 'o2');
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ctx.print(createSourceSpan(fileB, 1), 'o3');
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const sm = ctx.toSourceMapGenerator('o.ts', 'o.js').toJSON() !;
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expect(sm.sources).toEqual([fileA.url, fileB.url]);
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expect(sm.sourcesContent).toEqual([fileA.content, fileB.content]);
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});
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it('should generate a valid mapping', () => {
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ctx.print(createSourceSpan(fileA, 0), 'fileA-0');
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ctx.println(createSourceSpan(fileB, 1), 'fileB-1');
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ctx.print(createSourceSpan(fileA, 2), 'fileA-2');
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expectMap(ctx, 0, 0, 'a.js', 0, 0);
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expectMap(ctx, 0, 7, 'b.js', 0, 2);
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expectMap(ctx, 1, 0, 'a.js', 0, 4);
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});
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it('should be able to shift the content', () => {
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ctx.print(createSourceSpan(fileA, 0), 'fileA-0');
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const sm = ctx.toSourceMapGenerator('o.ts', 'o.js', 10).toJSON() !;
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expect(originalPositionFor(sm, {line: 11, column: 0})).toEqual({
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line: 1,
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column: 0,
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source: 'a.js',
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});
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});
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it('should use the default source file for the first character', () => {
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ctx.print(null, 'fileA-0');
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expectMap(ctx, 0, 0, 'o.ts', 0, 0);
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});
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it('should use an explicit mapping for the first character', () => {
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ctx.print(createSourceSpan(fileA, 0), 'fileA-0');
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expectMap(ctx, 0, 0, 'a.js', 0, 0);
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});
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it('should map leading segment without span', () => {
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ctx.print(null, '....');
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ctx.print(createSourceSpan(fileA, 0), 'fileA-0');
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expectMap(ctx, 0, 0, 'o.ts', 0, 0);
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expectMap(ctx, 0, 4, 'a.js', 0, 0);
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expect(nbSegmentsPerLine(ctx)).toEqual([2]);
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});
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it('should handle indent', () => {
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ctx.incIndent();
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ctx.println(createSourceSpan(fileA, 0), 'fileA-0');
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ctx.incIndent();
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ctx.println(createSourceSpan(fileA, 1), 'fileA-1');
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ctx.decIndent();
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ctx.println(createSourceSpan(fileA, 2), 'fileA-2');
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expectMap(ctx, 0, 0, 'o.ts', 0, 0);
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expectMap(ctx, 0, 2, 'a.js', 0, 0);
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expectMap(ctx, 1, 0);
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expectMap(ctx, 1, 2);
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expectMap(ctx, 1, 4, 'a.js', 0, 2);
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expectMap(ctx, 2, 0);
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expectMap(ctx, 2, 2, 'a.js', 0, 4);
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expect(nbSegmentsPerLine(ctx)).toEqual([2, 1, 1]);
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});
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it('should coalesce identical span', () => {
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const span = createSourceSpan(fileA, 0);
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ctx.print(span, 'fileA-0');
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ctx.print(null, '...');
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ctx.print(span, 'fileA-0');
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ctx.print(createSourceSpan(fileB, 0), 'fileB-0');
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expectMap(ctx, 0, 0, 'a.js', 0, 0);
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expectMap(ctx, 0, 7, 'a.js', 0, 0);
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expectMap(ctx, 0, 10, 'a.js', 0, 0);
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expectMap(ctx, 0, 17, 'b.js', 0, 0);
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expect(nbSegmentsPerLine(ctx)).toEqual([2]);
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});
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});
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});
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}
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// All lines / columns indexes are 0-based
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// Note: source-map line indexes are 1-based, column 0-based
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function expectMap(
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ctx: EmitterVisitorContext, genLine: number, genCol: number, source: string | null = null,
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srcLine: number | null = null, srcCol: number | null = null) {
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const sm = ctx.toSourceMapGenerator('o.ts', 'o.js').toJSON() !;
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const genPosition = {line: genLine + 1, column: genCol};
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const origPosition = originalPositionFor(sm, genPosition);
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expect(origPosition.source).toEqual(source);
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expect(origPosition.line).toEqual(srcLine === null ? null : srcLine + 1);
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expect(origPosition.column).toEqual(srcCol);
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}
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// returns the number of segments per line
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function nbSegmentsPerLine(ctx: EmitterVisitorContext) {
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const sm = ctx.toSourceMapGenerator('o.ts', 'o.js').toJSON() !;
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const lines = sm.mappings.split(';');
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return lines.map(l => {
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const m = l.match(/,/g);
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return m === null ? 1 : m.length + 1;
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});
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}
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function createSourceSpan(file: ParseSourceFile, idx: number) {
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const col = 2 * idx;
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const start = new ParseLocation(file, col, 0, col);
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const end = new ParseLocation(file, col + 2, 0, col + 2);
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const sourceSpan = new ParseSourceSpan(start, end);
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return {sourceSpan};
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}
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