angular-docs-cn/packages/compiler/src/aot/generated_file.ts

49 lines
1.4 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Statement, areAllEquivalent} from '../output/output_ast';
import {TypeScriptEmitter} from '../output/ts_emitter';
export class GeneratedFile {
public source: string|null;
public stmts: Statement[]|null;
constructor(
public srcFileUrl: string, public genFileUrl: string, sourceOrStmts: string|Statement[]) {
if (typeof sourceOrStmts === 'string') {
this.source = sourceOrStmts;
this.stmts = null;
} else {
this.source = null;
this.stmts = sourceOrStmts;
}
}
isEquivalent(other: GeneratedFile): boolean {
if (this.genFileUrl !== other.genFileUrl) {
return false;
}
if (this.source) {
return this.source === other.source;
}
if (other.stmts == null) {
return false;
}
// Note: the constructor guarantees that if this.source is not filled,
// then this.stmts is.
return areAllEquivalent(this.stmts !, other.stmts !);
}
}
export function toTypeScript(file: GeneratedFile, preamble: string = ''): string {
if (!file.stmts) {
throw new Error(`Illegal state: No stmts present on GeneratedFile ${file.genFileUrl}`);
}
return new TypeScriptEmitter().emitStatements(file.genFileUrl, file.stmts, preamble);
}