sigmund@google.com
f809a49118
Now that barback support listening for log messages, we can remove the logging hooks we temporarily added in our linter. R=jmesserly@google.com Review URL: https://codereview.chromium.org//112843004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31110 260f80e4-7a28-3924-810f-c04153c831b5
82 lines
2.6 KiB
Dart
82 lines
2.6 KiB
Dart
// Copyright (c) 2013, 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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/** Transfomer used for pub-serve and pub-deploy. */
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library polymer.transformer;
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import 'package:barback/barback.dart';
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import 'package:observe/transformer.dart';
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import 'src/build/build_filter.dart';
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import 'src/build/code_extractor.dart';
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import 'src/build/common.dart';
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import 'src/build/import_inliner.dart';
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import 'src/build/linter.dart';
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import 'src/build/polyfill_injector.dart';
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import 'src/build/script_compactor.dart';
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/**
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* The Polymer transformer, which internally runs several phases that will:
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* * Extract inlined script tags into their separate files
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* * Apply the observable transformer on every Dart script.
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* * Inline imported html files
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* * Combine scripts from multiple files into a single script tag
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* * Inject extra polyfills needed to run on all browsers.
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*
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* At the end of these phases, this tranformer produces a single entrypoint HTML
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* file with a single Dart script that can later be compiled with dart2js.
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*/
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class PolymerTransformerGroup implements TransformerGroup {
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final Iterable<Iterable> phases;
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PolymerTransformerGroup(TransformOptions options)
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: phases = _createDeployPhases(options);
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PolymerTransformerGroup.asPlugin(BarbackSettings settings)
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: this(_parseSettings(settings));
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}
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TransformOptions _parseSettings(BarbackSettings settings) {
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var args = settings.configuration;
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bool releaseMode = settings.mode == BarbackMode.RELEASE;
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bool jsOption = args['js'];
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bool csp = args['csp'] == true; // defaults to false
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return new TransformOptions(
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entryPoints: _readEntrypoints(args['entry_points']),
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directlyIncludeJS: jsOption == null ? releaseMode : jsOption,
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contentSecurityPolicy: csp,
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releaseMode: releaseMode);
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}
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_readEntrypoints(value) {
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if (value == null) return null;
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var entryPoints = [];
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bool error;
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if (value is List) {
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entryPoints = value;
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error = value.any((e) => e is! String);
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} else if (value is String) {
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entryPoints = [value];
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error = false;
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} else {
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error = true;
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}
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if (error) {
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print('Invalid value for "entry_points" in the polymer transformer.');
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}
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return entryPoints;
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}
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List<List<Transformer>> _createDeployPhases(TransformOptions options) {
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return [
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[new Linter(options)],
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[new InlineCodeExtractor(options)],
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[new ObservableTransformer()],
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[new ImportInliner(options)],
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[new ScriptCompactor(options)],
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[new PolyfillInjector(options)],
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[new BuildFilter(options)]
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];
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}
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