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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 /** | 5 /** |
| 6 * This library contains the infrastructure to parse and integrate patch files. | 6 * This library contains the infrastructure to parse and integrate patch files. |
| 7 * | 7 * |
| 8 * Three types of elements can be patched: [LibraryElement], [ClassElement], | 8 * Three types of elements can be patched: [LibraryElement], [ClassElement], |
| 9 * [FunctionElement]. Patches are introduced in patch libraries which are loaded | 9 * [FunctionElement]. Patches are introduced in patch libraries which are loaded |
| 10 * together with the corresponding origin library. Which libraries that are | 10 * together with the corresponding origin library. Which libraries that are |
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| 429 } | 429 } |
| 430 | 430 |
| 431 /// Annotation handler for pre-resolution detection of `@patch` annotations. | 431 /// Annotation handler for pre-resolution detection of `@patch` annotations. |
| 432 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> { | 432 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> { |
| 433 const PatchAnnotationHandler(); | 433 const PatchAnnotationHandler(); |
| 434 | 434 |
| 435 PatchVersion getPatchVersion(MetadataAnnotation annotation) { | 435 PatchVersion getPatchVersion(MetadataAnnotation annotation) { |
| 436 if (annotation.beginToken != null) { | 436 if (annotation.beginToken != null) { |
| 437 if (annotation.beginToken.next.value == 'patch') { | 437 if (annotation.beginToken.next.value == 'patch') { |
| 438 return const PatchVersion(null); | 438 return const PatchVersion(null); |
| 439 } else if (annotation.beginToken.next.value == 'patch_old') { | 439 } else if (annotation.beginToken.next.value == 'patch_full') { |
| 440 return const PatchVersion('old'); | 440 return const PatchVersion('full'); |
| 441 } else if (annotation.beginToken.next.value == 'patch_new') { | 441 } else if (annotation.beginToken.next.value == 'patch_lazy') { |
| 442 return const PatchVersion('new'); | 442 return const PatchVersion('lazy'); |
| 443 } | 443 } |
| 444 } | 444 } |
| 445 return null; | 445 return null; |
| 446 } | 446 } |
| 447 | 447 |
| 448 @override | 448 @override |
| 449 PatchVersion apply(Compiler compiler, | 449 PatchVersion apply(Compiler compiler, |
| 450 Element element, | 450 Element element, |
| 451 MetadataAnnotation annotation) { | 451 MetadataAnnotation annotation) { |
| 452 return getPatchVersion(annotation); | 452 return getPatchVersion(annotation); |
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| 568 | 568 |
| 569 class PatchVersion { | 569 class PatchVersion { |
| 570 final String tag; | 570 final String tag; |
| 571 | 571 |
| 572 const PatchVersion(this.tag); | 572 const PatchVersion(this.tag); |
| 573 | 573 |
| 574 bool isActive(String patchTag) => tag == null || tag == patchTag; | 574 bool isActive(String patchTag) => tag == null || tag == patchTag; |
| 575 | 575 |
| 576 String toString() => 'PatchVersion($tag)'; | 576 String toString() => 'PatchVersion($tag)'; |
| 577 } | 577 } |
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