131 lines
3.6 KiB
TypeScript
131 lines
3.6 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 {ReflectorHostContext} from '@angular/compiler-cli/src/reflector_host';
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import * as ts from 'typescript';
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export type Entry = string | Directory;
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export interface Directory { [name: string]: Entry; }
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export class MockContext implements ReflectorHostContext {
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constructor(public currentDirectory: string, private files: Entry) {}
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fileExists(fileName: string): boolean { return typeof this.getEntry(fileName) === 'string'; }
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directoryExists(path: string): boolean { return typeof this.getEntry(path) === 'object'; }
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readFile(fileName: string): string|undefined {
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const data = this.getEntry(fileName);
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if (typeof data === 'string') {
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return data;
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}
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return undefined;
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}
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writeFile(fileName: string, data: string): void {
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const parts = fileName.split('/');
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const name = parts.pop();
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const entry = this.getEntry(parts);
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if (entry && typeof entry !== 'string') {
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entry[name] = data;
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}
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}
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assumeFileExists(fileName: string): void { this.writeFile(fileName, ''); }
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getEntry(fileName: string|string[]): Entry|undefined {
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let parts = typeof fileName === 'string' ? fileName.split('/') : fileName;
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if (parts[0]) {
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parts = this.currentDirectory.split('/').concat(parts);
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}
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parts.shift();
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parts = normalize(parts);
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let current = this.files;
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while (parts.length) {
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const part = parts.shift();
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if (typeof current === 'string') {
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return undefined;
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}
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const next = (<Directory>current)[part];
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if (next === undefined) {
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return undefined;
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}
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current = next;
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}
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return current;
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}
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getDirectories(path: string): string[] {
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const dir = this.getEntry(path);
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if (typeof dir !== 'object') {
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return [];
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} else {
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return Object.keys(dir).filter(key => typeof dir[key] === 'object');
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}
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}
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}
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function normalize(parts: string[]): string[] {
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const result: string[] = [];
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while (parts.length) {
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const part = parts.shift();
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switch (part) {
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case '.':
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break;
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case '..':
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result.pop();
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break;
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default:
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result.push(part);
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}
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}
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return result;
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}
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export class MockCompilerHost implements ts.CompilerHost {
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constructor(private context: MockContext) {}
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fileExists(fileName: string): boolean { return this.context.fileExists(fileName); }
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readFile(fileName: string): string { return this.context.readFile(fileName); }
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directoryExists(directoryName: string): boolean {
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return this.context.directoryExists(directoryName);
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}
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getSourceFile(
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fileName: string, languageVersion: ts.ScriptTarget,
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onError?: (message: string) => void): ts.SourceFile {
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const sourceText = this.context.readFile(fileName);
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if (sourceText) {
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return ts.createSourceFile(fileName, sourceText, languageVersion);
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} else {
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return undefined;
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}
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}
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getDefaultLibFileName(options: ts.CompilerOptions): string {
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return ts.getDefaultLibFileName(options);
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}
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writeFile: ts.WriteFileCallback = (fileName, text) => { this.context.writeFile(fileName, text); }
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getCurrentDirectory(): string {
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return this.context.currentDirectory;
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}
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getCanonicalFileName(fileName: string): string { return fileName; }
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useCaseSensitiveFileNames(): boolean { return false; }
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getNewLine(): string { return '\n'; }
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getDirectories(path: string): string[] { return this.context.getDirectories(path); }
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}
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