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/**
* @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
*/
/**
* Transform template html and css into executable code.
* Intended to be used in a build step.
*/
import * as compiler from '@angular/compiler';
import {AngularCompilerOptions, NgcCliOptions} from '@angular/tsc-wrapped';
import {readFileSync} from 'fs';
import * as path from 'path';
import * as ts from 'typescript';
import {CompilerHost, CompilerHostContext, ModuleResolutionHostAdapter} from './compiler_host';
import {PathMappedCompilerHost} from './path_mapped_compiler_host';
const GENERATED_META_FILES = /\.json$/;
const PREAMBLE = `/**
* @fileoverview This file is generated by the Angular template compiler.
* Do not edit.
* @suppress {suspiciousCode,uselessCode,missingProperties}
*/
/* tslint:disable */
`;
export class CodeGenerator {
constructor(
private options: AngularCompilerOptions, private program: ts.Program,
public host: ts.CompilerHost, private compiler: compiler.AotCompiler,
private ngCompilerHost: CompilerHost) {}
codegen(): Promise<any> {
return this.compiler
.compileAll(this.program.getSourceFiles().map(
sf => this.ngCompilerHost.getCanonicalFileName(sf.fileName)))
.then(generatedModules => {
generatedModules.forEach(generatedModule => {
const sourceFile = this.program.getSourceFile(generatedModule.srcFileUrl);
const emitPath = this.ngCompilerHost.calculateEmitPath(generatedModule.genFileUrl);
const source = GENERATED_META_FILES.test(emitPath) ? generatedModule.source :
PREAMBLE + generatedModule.source;
this.host.writeFile(emitPath, source, false, () => {}, [sourceFile]);
});
});
}
static create(
options: AngularCompilerOptions, cliOptions: NgcCliOptions, program: ts.Program,
tsCompilerHost: ts.CompilerHost, compilerHostContext?: CompilerHostContext,
ngCompilerHost?: CompilerHost): CodeGenerator {
if (!ngCompilerHost) {
const usePathMapping = !!options.rootDirs && options.rootDirs.length > 0;
const context = compilerHostContext || new ModuleResolutionHostAdapter(tsCompilerHost);
ngCompilerHost = usePathMapping ? new PathMappedCompilerHost(program, options, context) :
new CompilerHost(program, options, context);
}
const transFile = cliOptions.i18nFile;
const locale = cliOptions.locale;
let transContent: string = '';
if (transFile) {
if (!locale) {
throw new Error(
`The translation file (${transFile}) locale must be provided. Use the --locale option.`);
}
transContent = readFileSync(transFile, 'utf8');
}
const {compiler: aotCompiler} = compiler.createAotCompiler(ngCompilerHost, {
debug: options.debug === true,
translations: transContent,
i18nFormat: cliOptions.i18nFormat,
locale: cliOptions.locale
});
return new CodeGenerator(options, program, tsCompilerHost, aotCompiler, ngCompilerHost);
}
}