330 lines
13 KiB
TypeScript
330 lines
13 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 {AotCompilerOptions, AotSummaryResolver, CompileMetadataResolver, CompilerConfig, DEFAULT_INTERPOLATION_CONFIG, DirectiveNormalizer, DirectiveResolver, DomElementSchemaRegistry, HtmlParser, Lexer, NgModuleResolver, ParseError, Parser, PipeResolver, StaticReflector, StaticSymbol, StaticSymbolCache, StaticSymbolResolver, TemplateParser, TypeScriptEmitter, analyzeNgModules, createAotUrlResolver} from '@angular/compiler';
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import {ViewEncapsulation} from '@angular/core';
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import * as ts from 'typescript';
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import {NgAnalyzedModules} from '../../src/aot/compiler';
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import {ConstantPool} from '../../src/constant_pool';
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import * as html from '../../src/ml_parser/ast';
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import {removeWhitespaces} from '../../src/ml_parser/html_whitespaces';
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import * as o from '../../src/output/output_ast';
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import {compilePipe} from '../../src/render3/r3_pipe_compiler';
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import {htmlAstToRender3Ast} from '../../src/render3/r3_template_transform';
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import {compileComponentFromRender2, compileDirectiveFromRender2} from '../../src/render3/view/compiler';
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import {BindingParser} from '../../src/template_parser/binding_parser';
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import {OutputContext, escapeRegExp} from '../../src/util';
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import {MockAotCompilerHost, MockCompilerHost, MockData, MockDirectory, arrayToMockDir, expectNoDiagnostics, settings, toMockFileArray} from '../aot/test_util';
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const IDENTIFIER = /[A-Za-z_$ɵ][A-Za-z0-9_$]*/;
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const OPERATOR =
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/!|%|\*|\/|\^|&&?|\|\|?|\(|\)|\{|\}|\[|\]|:|;|<=?|>=?|={1,3}|!==?|=>|\+\+?|--?|@|,|\.|\.\.\./;
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const STRING = /'[^']*'|"[^"]*"|`[\s\S]*?`/;
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const NUMBER = /\d+/;
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const ELLIPSIS = '…';
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const TOKEN = new RegExp(
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`\\s*((${IDENTIFIER.source})|(${OPERATOR.source})|(${STRING.source})|${NUMBER.source}|${ELLIPSIS})`,
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'y');
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type Piece = string | RegExp;
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const SKIP = /(?:.|\n|\r)*/;
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const ERROR_CONTEXT_WIDTH = 30;
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// Transform the expected output to set of tokens
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function tokenize(text: string): Piece[] {
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TOKEN.lastIndex = 0;
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let match: RegExpMatchArray|null;
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const pieces: Piece[] = [];
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while ((match = TOKEN.exec(text)) !== null) {
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const token = match[1];
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if (token === 'IDENT') {
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pieces.push(IDENTIFIER);
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} else if (token === ELLIPSIS) {
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pieces.push(SKIP);
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} else {
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pieces.push(token);
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}
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}
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if (pieces.length === 0 || TOKEN.lastIndex !== 0) {
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const from = TOKEN.lastIndex;
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const to = from + ERROR_CONTEXT_WIDTH;
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throw Error(`Invalid test, no token found for '${text.substr(from, to)}...'`);
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}
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return pieces;
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}
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export function expectEmit(
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source: string, expected: string, description: string,
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assertIdentifiers?: {[name: string]: RegExp}) {
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// turns `// ...` into `…`
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// remove `// TODO` comment lines
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expected = expected.replace(/\/\/\s*\.\.\./g, ELLIPSIS).replace(/\/\/\s*TODO.*?\n/g, '');
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const pieces = tokenize(expected);
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const {regexp, groups} = buildMatcher(pieces);
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const matches = source.match(regexp);
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if (matches === null) {
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let last: number = 0;
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for (let i = 1; i < pieces.length; i++) {
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const {regexp} = buildMatcher(pieces.slice(0, i));
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const m = source.match(regexp);
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const expectedPiece = pieces[i - 1] == IDENTIFIER ? '<IDENT>' : pieces[i - 1];
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if (!m) {
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fail(
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`${description}: Expected to find ${expectedPiece} '${source.substr(0,last)}[<---HERE expected "${expectedPiece}"]${source.substr(last)}'`);
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return;
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} else {
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last = (m.index || 0) + m[0].length;
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}
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}
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fail(
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`Test helper failure: Expected expression failed but the reporting logic could not find where it failed in: ${source}`);
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} else {
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if (assertIdentifiers) {
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// It might be possible to add the constraints in the original regexp (see `buildMatcher`)
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// by transforming the assertion regexps when using anchoring, grouping, back references,
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// flags, ...
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//
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// Checking identifiers after they have matched allows for a simple and flexible
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// implementation.
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// The overall performance are not impacted when `assertIdentifiers` is empty.
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const ids = Object.keys(assertIdentifiers);
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for (let i = 0; i < ids.length; i++) {
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const id = ids[i];
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if (groups.has(id)) {
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const name = matches[groups.get(id) as number];
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const regexp = assertIdentifiers[id];
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if (!regexp.test(name)) {
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throw Error(
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`${description}: The matching identifier "${id}" is "${name}" which doesn't match ${regexp}`);
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}
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}
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}
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}
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}
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}
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const IDENT_LIKE = /^[a-z][A-Z]/;
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const MATCHING_IDENT = /^\$.*\$$/;
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/*
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* Builds a regexp that matches the given `pieces`
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*
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* It returns:
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* - the `regexp` to be used to match the generated code,
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* - the `groups` which maps `$...$` identifier to their position in the regexp matches.
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*/
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function buildMatcher(pieces: (string | RegExp)[]): {regexp: RegExp, groups: Map<string, number>} {
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const results: string[] = [];
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let first = true;
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let group = 0;
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const groups = new Map<string, number>();
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for (const piece of pieces) {
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if (!first)
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results.push(`\\s${typeof piece === 'string' && IDENT_LIKE.test(piece) ? '+' : '*'}`);
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first = false;
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if (typeof piece === 'string') {
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if (MATCHING_IDENT.test(piece)) {
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const matchGroup = groups.get(piece);
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if (!matchGroup) {
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results.push('(' + IDENTIFIER.source + ')');
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const newGroup = ++group;
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groups.set(piece, newGroup);
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} else {
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results.push(`\\${matchGroup}`);
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}
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} else {
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results.push(escapeRegExp(piece));
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}
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} else {
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results.push('(?:' + piece.source + ')');
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}
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}
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return {
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regexp: new RegExp(results.join('')),
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groups,
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};
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}
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function doCompile(
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data: MockDirectory, angularFiles: MockData, options: AotCompilerOptions = {},
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errorCollector: (error: any, fileName?: string) => void = error => { throw error; },
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compileAction: (
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outputCtx: OutputContext, analyzedModules: NgAnalyzedModules,
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resolver: CompileMetadataResolver, htmlParser: HtmlParser, templateParser: TemplateParser,
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hostBindingParser: BindingParser, reflector: StaticReflector) => void) {
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const testFiles = toMockFileArray(data);
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const scripts = testFiles.map(entry => entry.fileName);
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const angularFilesArray = toMockFileArray(angularFiles);
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const files = arrayToMockDir([...testFiles, ...angularFilesArray]);
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const mockCompilerHost = new MockCompilerHost(scripts, files);
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const compilerHost = new MockAotCompilerHost(mockCompilerHost);
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const program = ts.createProgram(scripts, {...settings}, mockCompilerHost);
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expectNoDiagnostics(program);
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// TODO(chuckj): Replace with a variant of createAotCompiler() when the r3_view_compiler is
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// integrated
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const urlResolver = createAotUrlResolver(compilerHost);
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const symbolCache = new StaticSymbolCache();
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const summaryResolver = new AotSummaryResolver(compilerHost, symbolCache);
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const symbolResolver = new StaticSymbolResolver(compilerHost, symbolCache, summaryResolver);
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const staticReflector =
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new StaticReflector(summaryResolver, symbolResolver, [], [], errorCollector);
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const htmlParser = new HtmlParser();
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const config = new CompilerConfig({
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defaultEncapsulation: ViewEncapsulation.Emulated,
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useJit: false,
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missingTranslation: options.missingTranslation,
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preserveWhitespaces: options.preserveWhitespaces,
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strictInjectionParameters: options.strictInjectionParameters,
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});
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const normalizer = new DirectiveNormalizer(
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{get: (url: string) => compilerHost.loadResource(url)}, urlResolver, htmlParser, config);
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const expressionParser = new Parser(new Lexer());
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const elementSchemaRegistry = new DomElementSchemaRegistry();
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const templateParser = new TemplateParser(
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config, staticReflector, expressionParser, elementSchemaRegistry, htmlParser, console, []);
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const resolver = new CompileMetadataResolver(
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config, htmlParser, new NgModuleResolver(staticReflector),
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new DirectiveResolver(staticReflector), new PipeResolver(staticReflector), summaryResolver,
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elementSchemaRegistry, normalizer, console, symbolCache, staticReflector, errorCollector);
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// Create the TypeScript program
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const sourceFiles = program.getSourceFiles().map(sf => sf.fileName);
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// Analyze the modules
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// TODO(chuckj): Eventually this should not be necessary as the ts.SourceFile should be sufficient
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// to generate a template definition.
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const analyzedModules = analyzeNgModules(sourceFiles, compilerHost, symbolResolver, resolver);
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const pipesOrDirectives = Array.from(analyzedModules.ngModuleByPipeOrDirective.keys());
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const fakeOutputContext: OutputContext = {
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genFilePath: 'fakeFactory.ts',
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statements: [],
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importExpr(symbol: StaticSymbol, typeParams: o.Type[]) {
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if (!(symbol instanceof StaticSymbol)) {
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if (!symbol) {
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throw new Error('Invalid: undefined passed to as a symbol');
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}
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throw new Error(`Invalid: ${(symbol as any).constructor.name} is not a symbol`);
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}
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return (symbol.members || [])
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.reduce(
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(expr, member) => expr.prop(member),
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<o.Expression>o.importExpr(new o.ExternalReference(symbol.filePath, symbol.name)));
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},
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constantPool: new ConstantPool()
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};
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const errors: ParseError[] = [];
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const hostBindingParser = new BindingParser(
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expressionParser, DEFAULT_INTERPOLATION_CONFIG, elementSchemaRegistry, null, errors);
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// Load all directives and pipes
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for (const pipeOrDirective of pipesOrDirectives) {
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const module = analyzedModules.ngModuleByPipeOrDirective.get(pipeOrDirective) !;
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resolver.loadNgModuleDirectiveAndPipeMetadata(module.type.reference, true);
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}
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compileAction(
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fakeOutputContext, analyzedModules, resolver, htmlParser, templateParser, hostBindingParser,
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staticReflector);
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fakeOutputContext.statements.unshift(...fakeOutputContext.constantPool.statements);
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const emitter = new TypeScriptEmitter();
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const result = emitter.emitStatementsAndContext(
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fakeOutputContext.genFilePath, fakeOutputContext.statements, '', false,
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/* referenceFilter */ undefined,
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/* importFilter */ e => e.moduleName != null && e.moduleName.startsWith('/app'));
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if (errors.length) {
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throw new Error('Unexpected errors:' + errors.map(e => e.toString()).join(', '));
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}
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return {source: result.sourceText, outputContext: fakeOutputContext};
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}
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export function compile(
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data: MockDirectory, angularFiles: MockData, options: AotCompilerOptions = {},
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errorCollector: (error: any, fileName?: string) => void = error => { throw error;}) {
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return doCompile(
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data, angularFiles, options, errorCollector,
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(outputCtx: OutputContext, analyzedModules: NgAnalyzedModules,
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resolver: CompileMetadataResolver, htmlParser: HtmlParser, templateParser: TemplateParser,
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hostBindingParser: BindingParser, reflector: StaticReflector) => {
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const pipesOrDirectives = Array.from(analyzedModules.ngModuleByPipeOrDirective.keys());
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for (const pipeOrDirective of pipesOrDirectives) {
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const module = analyzedModules.ngModuleByPipeOrDirective.get(pipeOrDirective);
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if (!module || !module.type.reference.filePath.startsWith('/app')) {
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continue;
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}
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if (resolver.isDirective(pipeOrDirective)) {
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const directive = resolver.getDirectiveMetadata(pipeOrDirective);
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if (directive.isComponent) {
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const fakeUrl = 'ng://fake-template-url.html';
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let htmlAst = htmlParser.parse(directive.template !.template !, fakeUrl);
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// Map of StaticType by directive selectors
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const directiveTypeBySel = new Map<string, any>();
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const directives = module.transitiveModule.directives.map(
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dir => resolver.getDirectiveSummary(dir.reference));
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directives.forEach(directive => {
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if (directive.selector) {
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directiveTypeBySel.set(directive.selector, directive.type.reference);
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}
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});
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// Map of StaticType by pipe names
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const pipeTypeByName = new Map<string, any>();
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const pipes = module.transitiveModule.pipes.map(
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pipe => resolver.getPipeSummary(pipe.reference));
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pipes.forEach(pipe => { pipeTypeByName.set(pipe.name, pipe.type.reference); });
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const preserveWhitespaces = directive.template !.preserveWhitespaces;
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if (!preserveWhitespaces) {
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htmlAst = removeWhitespaces(htmlAst);
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}
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const render3Ast = htmlAstToRender3Ast(htmlAst.rootNodes, hostBindingParser);
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compileComponentFromRender2(
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outputCtx, directive, render3Ast, reflector, hostBindingParser,
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directiveTypeBySel, pipeTypeByName);
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} else {
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compileDirectiveFromRender2(outputCtx, directive, reflector, hostBindingParser);
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}
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} else if (resolver.isPipe(pipeOrDirective)) {
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const metadata = resolver.getPipeMetadata(pipeOrDirective);
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if (metadata) {
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compilePipe(outputCtx, metadata, reflector);
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}
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}
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}
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});
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}
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