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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, 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 /// Holds a couple utility functions used at various places in the system. | 5 /// Holds a couple utility functions used at various places in the system. |
6 library dev_compiler.src.utils; | 6 library dev_compiler.src.utils; |
7 | 7 |
8 import 'dart:io'; | 8 import 'dart:io'; |
9 | 9 |
10 import 'package:path/path.dart' as path; | 10 import 'package:path/path.dart' as path; |
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426 | 426 |
427 bool isInlineJS(Element e) => | 427 bool isInlineJS(Element e) => |
428 e is FunctionElement && | 428 e is FunctionElement && |
429 e.library.source.uri.toString() == 'dart:_foreign_helper' && | 429 e.library.source.uri.toString() == 'dart:_foreign_helper' && |
430 e.name == 'JS'; | 430 e.name == 'JS'; |
431 | 431 |
432 bool isDartMathMinMax(Element e) => | 432 bool isDartMathMinMax(Element e) => |
433 e is FunctionElement && | 433 e is FunctionElement && |
434 e.library.source.uri.toString() == 'dart:math' && | 434 e.library.source.uri.toString() == 'dart:math' && |
435 (e.name == 'min' || e.name == 'max'); | 435 (e.name == 'min' || e.name == 'max'); |
| 436 |
| 437 /// Parses an enum value out of a string. |
| 438 // TODO(ochafik): generic signature. |
| 439 dynamic parseEnum(String s, List enumValues) => |
| 440 enumValues.firstWhere((v) => s == getEnumName(v), |
| 441 orElse: () => throw new ArgumentError( |
| 442 'Unknown enum value: $s ' |
| 443 '(expected one of ${enumValues.map(getEnumName)})')); |
| 444 |
| 445 /// Gets the "simple" name of an enum value. |
| 446 getEnumName(v) { |
| 447 var parts = '$v'.split('.'); |
| 448 if (parts.length != 2 || !parts.every((p) => p.isNotEmpty)) { |
| 449 throw new ArgumentError('Invalid enum value: $v'); |
| 450 } |
| 451 return parts[1]; |
| 452 } |
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