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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.transform; | 5 library barback.transform; |
6 | 6 |
7 import 'dart:async'; | 7 import 'dart:async'; |
8 import 'package:source_maps/span.dart' show Span; | |
nweiz
2013/08/08 23:34:57
Style nit: blank line between core library imports
Siggi Cherem (dart-lang)
2013/08/09 00:29:54
Done.
Funny, I usually like using show if the lis
Jennifer Messerly
2013/08/09 05:44:03
Moreover, it's the only style (along with "as") wh
Bob Nystrom
2013/08/09 15:42:38
Since this is a "package:" import, that doesn't wo
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8 | 9 |
9 import 'asset.dart'; | 10 import 'asset.dart'; |
10 import 'asset_id.dart'; | 11 import 'asset_id.dart'; |
11 import 'asset_node.dart'; | 12 import 'asset_node.dart'; |
12 import 'asset_set.dart'; | 13 import 'asset_set.dart'; |
13 import 'errors.dart'; | 14 import 'errors.dart'; |
14 import 'transform_node.dart'; | 15 import 'transform_node.dart'; |
15 import 'utils.dart'; | 16 import 'utils.dart'; |
16 | 17 |
17 /// Creates a [Transform] by forwarding to the private constructor. | 18 /// Creates a [Transform] by forwarding to the private constructor. |
(...skipping 20 matching lines...) Expand all Loading... | |
38 /// | 39 /// |
39 /// While a transformation can use multiple input assets, one must be a | 40 /// While a transformation can use multiple input assets, one must be a |
40 /// special "primary" asset. This will be the "entrypoint" or "main" input | 41 /// special "primary" asset. This will be the "entrypoint" or "main" input |
41 /// file for a transformation. | 42 /// file for a transformation. |
42 /// | 43 /// |
43 /// For example, with a dart2js transform, the primary input would be the | 44 /// For example, with a dart2js transform, the primary input would be the |
44 /// entrypoint Dart file. All of the other Dart files that that imports | 45 /// entrypoint Dart file. All of the other Dart files that that imports |
45 /// would be secondary inputs. | 46 /// would be secondary inputs. |
46 AssetId get primaryId => _node.primary.id; | 47 AssetId get primaryId => _node.primary.id; |
47 | 48 |
49 Log get log => _log; | |
Bob Nystrom
2013/08/08 22:47:09
Document:
"A logger so that the [Transformer] can
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done.
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50 | |
48 /// Gets the asset for the primary input. | 51 /// Gets the asset for the primary input. |
49 Future<Asset> get primaryInput => getInput(primaryId); | 52 Future<Asset> get primaryInput => getInput(primaryId); |
50 | 53 |
51 Transform._(this._node, this._outputs); | 54 Transform._(this._node, this._outputs); |
52 | 55 |
53 /// Gets the asset for for an input [id]. | 56 /// Gets the asset for for an input [id]. |
54 /// | 57 /// |
55 /// If an input with that ID cannot be found, throws an | 58 /// If an input with that ID cannot be found, throws an |
56 /// [AssetNotFoundException]. | 59 /// [AssetNotFoundException]. |
57 Future<Asset> getInput(AssetId id) => _node.getInput(id); | 60 Future<Asset> getInput(AssetId id) => _node.getInput(id); |
58 | 61 |
59 /// Stores [output] as the output created by this transformation. | 62 /// Stores [output] as the output created by this transformation. |
60 /// | 63 /// |
61 /// A transformation can output as many assets as it wants. | 64 /// A transformation can output as many assets as it wants. |
62 void addOutput(Asset output) { | 65 void addOutput(Asset output) { |
63 // TODO(rnystrom): This should immediately throw if an output with that ID | 66 // TODO(rnystrom): This should immediately throw if an output with that ID |
64 // has already been created by this transformer. | 67 // has already been created by this transformer. |
65 _outputs.add(output); | 68 _outputs.add(output); |
66 } | 69 } |
67 } | 70 } |
71 | |
72 final Log _log = new Log(true); | |
Bob Nystrom
2013/08/08 22:47:09
Add a TODO to create a separate one for each Trans
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done.
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73 | |
74 /// Log object used to report warnings and errors encountered while running a | |
Bob Nystrom
2013/08/08 22:47:09
Add a TODO to move this into its own file.
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done. I'm happy to move it out too (if we know wha
nweiz
2013/08/08 23:34:57
Or just move it now.
Siggi Cherem (dart-lang)
2013/08/09 00:29:54
now that it's just TransformLogger, it feels like
nweiz
2013/08/09 00:53:48
I'd still prefer it to be separate.
Siggi Cherem (dart-lang)
2013/08/09 01:17:30
Done.
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75 /// transform. | |
76 class Log { | |
77 | |
78 bool _shouldPrint; | |
79 | |
80 Log(this._shouldPrint); | |
81 | |
82 /// Logs a warning message. If present, [span] indicates the location in an | |
Bob Nystrom
2013/08/08 22:47:09
"an asset that generated" -> "the input asset that
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done.
nweiz
2013/08/08 23:34:57
Style nit: the first paragraph of a doc comment sh
Siggi Cherem (dart-lang)
2013/08/09 00:29:54
Done.
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83 /// asset that generated the warning. | |
84 void warning(String message, [Span span]) { | |
85 _printMessage('warning', message, span); | |
86 } | |
87 | |
88 /// Logs an error message. If present, [span] indicates the location in an | |
89 /// asset that generated the error. | |
Bob Nystrom
2013/08/08 22:47:09
Ditto above change here.
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done.
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90 void error(String message, [Span span]) { | |
nweiz
2013/08/08 23:34:57
Add a TODO to clarify when an error message should
Siggi Cherem (dart-lang)
2013/08/09 00:29:54
Done.
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91 _printMessage('error', message, span); | |
92 } | |
93 | |
94 // TODO(sigmund,rnystrom): do something better than printing. | |
95 _printMessage(String prefix, String message, Span span) { | |
96 if (!_shouldPrint) return; | |
97 var sb = new StringBuffer()..write(prefix)..write(' '); | |
Bob Nystrom
2013/08/08 22:47:09
sb -> buffer
Siggi Cherem (dart-lang)
2013/08/08 23:10:41
Done. We all have different preferences on this on
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98 if (span == null) { | |
99 sb.write(message); | |
100 } else { | |
101 sb.write(span.getLocationMessage(message)); | |
102 } | |
103 print(sb.toString()); | |
nweiz
2013/08/08 23:34:57
Is it worth the extra complexity here to use a Str
Siggi Cherem (dart-lang)
2013/08/09 00:29:54
good point. I used to have color printing and remv
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104 } | |
105 } | |
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