Priscilla Lee
d2ec49d1f7
BUG= R=jmesserly@google.com Review URL: https://codereview.chromium.org/2183603003 .
104 lines
3.7 KiB
Dart
104 lines
3.7 KiB
Dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:html' show HttpRequest;
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import 'dart:convert' show BASE64;
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import 'package:analyzer/file_system/file_system.dart'
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show ResourceProvider, ResourceUriResolver;
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import 'package:analyzer/file_system/memory_file_system.dart'
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show MemoryResourceProvider;
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import 'package:analyzer/src/context/cache.dart'
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show AnalysisCache, CachePartition;
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import 'package:analyzer/src/context/context.dart' show AnalysisContextImpl;
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import 'package:analyzer/src/generated/engine.dart'
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show AnalysisContext, AnalysisEngine, TimestampedData;
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import 'package:analyzer/src/generated/sdk.dart'
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show DartSdk, SdkLibrary, SdkLibraryImpl;
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import 'package:analyzer/src/generated/source.dart'
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show DartUriResolver, Source, SourceFactory, UriKind;
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import 'package:analyzer/src/summary/idl.dart' show PackageBundle;
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import 'package:analyzer/src/summary/summary_sdk.dart' show SummaryBasedDartSdk;
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import 'package:args/command_runner.dart';
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import 'package:dev_compiler/src/analyzer/context.dart' show AnalyzerOptions;
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import 'package:dev_compiler/src/compiler/compiler.dart'
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show BuildUnit, CompilerOptions, JSModuleFile, ModuleCompiler;
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typedef void MessageHandler(Object message);
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typedef String CompileFn(String dart);
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typedef void OnLoadFn(CompileFn compile);
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/// The command for invoking the modular compiler.
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class WebCompileCommand extends Command {
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get name => 'compile';
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get description => 'Compile a set of Dart files into a JavaScript module.';
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final MessageHandler messageHandler;
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final OnLoadFn onload;
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WebCompileCommand(this.onload, {MessageHandler messageHandler})
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: this.messageHandler = messageHandler ?? print {
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CompilerOptions.addArguments(argParser);
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AnalyzerOptions.addArguments(argParser);
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}
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@override
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void run() {
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var request = new HttpRequest();
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request.onReadyStateChange.listen((_) {
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if (request.readyState == HttpRequest.DONE &&
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(request.status == 200 || request.status == 0)) {
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var response = request.responseText;
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var sdkBytes = BASE64.decode(response);
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var result = setUpCompile(sdkBytes);
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onload(result);
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}
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});
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request.open('get', 'dart_sdk.sum');
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request.send();
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}
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CompileFn setUpCompile(List<int> sdkBytes) {
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var resourceProvider = new MemoryResourceProvider();
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var packageBundle = new PackageBundle.fromBuffer(sdkBytes);
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var webDartSdk = new SummaryBasedDartSdk.fromBundle(
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true, packageBundle, resourceProvider);
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var sdkResolver = new DartUriResolver(webDartSdk);
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var fileResolvers = [new ResourceUriResolver(resourceProvider)];
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var compiler = new ModuleCompiler(
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new AnalyzerOptions(dartSdkPath: '/dart-sdk'),
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sdkResolver: sdkResolver,
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fileResolvers: fileResolvers,
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resourceProvider: resourceProvider);
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var compilerOptions = new CompilerOptions.fromArguments(argResults);
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var number = 0;
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return (String dart) {
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// Create a new virtual File that contains the given Dart source.
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number++;
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resourceProvider.newFile("/expression$number.dart", dart);
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var unit =
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new BuildUnit("", "", ["file:///expression$number.dart"], null);
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JSModuleFile module = compiler.compile(unit, compilerOptions);
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module.errors.forEach(messageHandler);
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if (!module.isValid) throw new CompileErrorException();
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return module.code;
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};
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}
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}
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/// Thrown when the input source code has errors.
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class CompileErrorException implements Exception {
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toString() => '\nPlease fix all errors before compiling (warnings are okay).';
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}
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