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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library barback.asset_cascade; | 5 library barback.asset_cascade; |
6 | 6 |
7 import 'dart:async'; | 7 import 'dart:async'; |
8 import 'dart:collection'; | 8 import 'dart:collection'; |
9 | 9 |
10 import 'asset.dart'; | 10 import 'asset.dart'; |
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115 /// Creates a new [AssetCascade]. | 115 /// Creates a new [AssetCascade]. |
116 /// | 116 /// |
117 /// It loads source assets within [package] using [provider]. | 117 /// It loads source assets within [package] using [provider]. |
118 AssetCascade(this.graph, this.package) { | 118 AssetCascade(this.graph, this.package) { |
119 _onDirtyPool.add(_onDirtyController.stream); | 119 _onDirtyPool.add(_onDirtyController.stream); |
120 _addPhase(new Phase(this, [])); | 120 _addPhase(new Phase(this, [])); |
121 | 121 |
122 // Keep track of logged errors so we can know that the build failed. | 122 // Keep track of logged errors so we can know that the build failed. |
123 onLog.listen((entry) { | 123 onLog.listen((entry) { |
124 if (entry.level == LogLevel.ERROR) { | 124 if (entry.level == LogLevel.ERROR) { |
| 125 // TODO(nweiz): keep track of stack trace. |
125 _accumulatedErrors.add( | 126 _accumulatedErrors.add( |
126 new TransformerException(entry.transform, entry.message)); | 127 new TransformerException(entry.transform, entry.message, null)); |
127 } | 128 } |
128 }); | 129 }); |
129 } | 130 } |
130 | 131 |
131 /// Gets the asset identified by [id]. | 132 /// Gets the asset identified by [id]. |
132 /// | 133 /// |
133 /// If [id] is for a generated or transformed asset, this will wait until it | 134 /// If [id] is for a generated or transformed asset, this will wait until it |
134 /// has been created and return it. This means that the returned asset will | 135 /// has been created and return it. This means that the returned asset will |
135 /// always be [AssetState.AVAILABLE]. | 136 /// always be [AssetState.AVAILABLE]. |
136 /// | 137 /// |
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180 // If this source was already loading, cancel the old load, since it may | 181 // If this source was already loading, cancel the old load, since it may |
181 // return out-of-date contents for the asset. | 182 // return out-of-date contents for the asset. |
182 if (_loadingSources.containsKey(id)) _loadingSources[id].cancel(); | 183 if (_loadingSources.containsKey(id)) _loadingSources[id].cancel(); |
183 | 184 |
184 _loadingSources[id] = | 185 _loadingSources[id] = |
185 new CancelableFuture<Asset>(graph.provider.getAsset(id)); | 186 new CancelableFuture<Asset>(graph.provider.getAsset(id)); |
186 _loadingSources[id].whenComplete(() { | 187 _loadingSources[id].whenComplete(() { |
187 _loadingSources.remove(id); | 188 _loadingSources.remove(id); |
188 }).then((asset) { | 189 }).then((asset) { |
189 var controller = _sourceControllerMap[id].setAvailable(asset); | 190 var controller = _sourceControllerMap[id].setAvailable(asset); |
190 }).catchError((error) { | 191 }).catchError((error, stack) { |
191 reportError(new AssetLoadException(id, error)); | 192 reportError(new AssetLoadException(id, error, stack)); |
192 | 193 |
193 // TODO(nweiz): propagate error information through asset nodes. | 194 // TODO(nweiz): propagate error information through asset nodes. |
194 _sourceControllerMap.remove(id).setRemoved(); | 195 _sourceControllerMap.remove(id).setRemoved(); |
195 }); | 196 }); |
196 } | 197 } |
197 } | 198 } |
198 | 199 |
199 /// Removes [removed] from the graph's known set of source assets. | 200 /// Removes [removed] from the graph's known set of source assets. |
200 void removeSources(Iterable<AssetId> removed) { | 201 void removeSources(Iterable<AssetId> removed) { |
201 removed.forEach((id) { | 202 removed.forEach((id) { |
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301 | 302 |
302 // Otherwise, everything is done. | 303 // Otherwise, everything is done. |
303 return; | 304 return; |
304 } | 305 } |
305 | 306 |
306 // Process that phase and then loop onto the next. | 307 // Process that phase and then loop onto the next. |
307 return future.then((_) => _process()); | 308 return future.then((_) => _process()); |
308 }); | 309 }); |
309 } | 310 } |
310 } | 311 } |
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