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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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126 import 'diagnostics/messages.dart' show | 126 import 'diagnostics/messages.dart' show |
127 MessageKind; | 127 MessageKind; |
128 import 'elements/elements.dart'; | 128 import 'elements/elements.dart'; |
129 import 'elements/modelx.dart' show | 129 import 'elements/modelx.dart' show |
130 BaseFunctionElementX, | 130 BaseFunctionElementX, |
131 ClassElementX, | 131 ClassElementX, |
132 GetterElementX, | 132 GetterElementX, |
133 LibraryElementX, | 133 LibraryElementX, |
134 MetadataAnnotationX, | 134 MetadataAnnotationX, |
135 SetterElementX; | 135 SetterElementX; |
136 import 'js_backend/js_backend.dart' show | |
137 JavaScriptBackend; | |
136 import 'library_loader.dart' show | 138 import 'library_loader.dart' show |
137 LibraryLoader; | 139 LibraryLoader; |
138 import 'parser/listener.dart' show | 140 import 'parser/listener.dart' show |
139 Listener, | 141 Listener, |
140 ParserError; | 142 ParserError; |
141 import 'parser/element_listener.dart' show | 143 import 'parser/element_listener.dart' show |
142 ElementListener; | 144 ElementListener; |
143 import 'parser/member_listener.dart' show | 145 import 'parser/member_listener.dart' show |
144 MemberListener; | 146 MemberListener; |
145 import 'parser/partial_elements.dart' show | 147 import 'parser/partial_elements.dart' show |
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296 } | 298 } |
297 | 299 |
298 void patchElement(Compiler compiler, | 300 void patchElement(Compiler compiler, |
299 Element origin, | 301 Element origin, |
300 Element patch) { | 302 Element patch) { |
301 if (origin == null) { | 303 if (origin == null) { |
302 compiler.reportErrorMessage( | 304 compiler.reportErrorMessage( |
303 patch, MessageKind.PATCH_NON_EXISTING, {'name': patch.name}); | 305 patch, MessageKind.PATCH_NON_EXISTING, {'name': patch.name}); |
304 return; | 306 return; |
305 } | 307 } |
308 | |
306 if (!(origin.isClass || | 309 if (!(origin.isClass || |
307 origin.isConstructor || | 310 origin.isConstructor || |
308 origin.isFunction || | 311 origin.isFunction || |
309 origin.isAbstractField)) { | 312 origin.isAbstractField)) { |
310 // TODO(ahe): Remove this error when the parser rejects all bad modifiers. | 313 // TODO(ahe): Remove this error when the parser rejects all bad modifiers. |
311 compiler.reportErrorMessage(origin, MessageKind.PATCH_NONPATCHABLE); | 314 compiler.reportErrorMessage(origin, MessageKind.PATCH_NONPATCHABLE); |
312 return; | 315 return; |
313 } | 316 } |
314 if (patch.isClass) { | 317 if (patch.isClass) { |
315 tryPatchClass(compiler, origin, patch); | 318 tryPatchClass(compiler, origin, patch); |
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358 checkNativeAnnotation(compiler, patch); | 361 checkNativeAnnotation(compiler, patch); |
359 } | 362 } |
360 | 363 |
361 /// Check whether [cls] has a `@Native(...)` annotation, and if so, set its | 364 /// Check whether [cls] has a `@Native(...)` annotation, and if so, set its |
362 /// native name from the annotation. | 365 /// native name from the annotation. |
363 checkNativeAnnotation(Compiler compiler, ClassElement cls) { | 366 checkNativeAnnotation(Compiler compiler, ClassElement cls) { |
364 EagerAnnotationHandler.checkAnnotation(compiler, cls, | 367 EagerAnnotationHandler.checkAnnotation(compiler, cls, |
365 const NativeAnnotationHandler()); | 368 const NativeAnnotationHandler()); |
366 } | 369 } |
367 | 370 |
371 checkJsInteropAnnotation(Compiler compiler, element) { | |
372 EagerAnnotationHandler.checkAnnotation(compiler, element, | |
373 const JsInteropAnnotationHandler()); | |
374 } | |
375 | |
376 | |
368 /// Abstract interface for pre-resolution detection of metadata. | 377 /// Abstract interface for pre-resolution detection of metadata. |
369 /// | 378 /// |
370 /// The detection is handled in two steps: | 379 /// The detection is handled in two steps: |
371 /// - match the annotation syntactically and assume that the annotation is valid | 380 /// - match the annotation syntactically and assume that the annotation is valid |
372 /// if it looks correct, | 381 /// if it looks correct, |
373 /// - setup a deferred action to check that the annotation has a valid constant | 382 /// - setup a deferred action to check that the annotation has a valid constant |
374 /// value and report an internal error if not. | 383 /// value and report an internal error if not. |
375 abstract class EagerAnnotationHandler<T> { | 384 abstract class EagerAnnotationHandler<T> { |
376 /// Checks that [annotation] looks like a matching annotation and optionally | 385 /// Checks that [annotation] looks like a matching annotation and optionally |
377 /// applies actions on [element]. Returns a non-null annotation marker if the | 386 /// applies actions on [element]. Returns a non-null annotation marker if the |
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445 Element element, | 454 Element element, |
446 MetadataAnnotation annotation, | 455 MetadataAnnotation annotation, |
447 ConstantValue constant) { | 456 ConstantValue constant) { |
448 if (constant.getType(compiler.coreTypes).element != | 457 if (constant.getType(compiler.coreTypes).element != |
449 compiler.nativeAnnotationClass) { | 458 compiler.nativeAnnotationClass) { |
450 compiler.internalError(annotation, 'Invalid @Native(...) annotation.'); | 459 compiler.internalError(annotation, 'Invalid @Native(...) annotation.'); |
451 } | 460 } |
452 } | 461 } |
453 } | 462 } |
454 | 463 |
464 /// Annotation handler for pre-resolution detection of `@Js(...)` | |
465 /// annotations. | |
466 class JsInteropAnnotationHandler implements EagerAnnotationHandler<bool> { | |
467 const JsInteropAnnotationHandler(); | |
468 | |
469 bool hasJsNameAnnotation(MetadataAnnotation annotation) => | |
470 annotation.beginToken != null && annotation.beginToken.next.value == 'Js'; | |
471 | |
472 bool apply(Compiler compiler, | |
473 Element element, | |
474 MetadataAnnotation annotation) { | |
475 bool hasJsInterop = hasJsNameAnnotation(annotation); | |
476 if (hasJsInterop) { | |
477 element.markAsJsInterop(); | |
478 } | |
479 // Due to semantics of apply in the baseclass we have to return null to | |
480 // indicate that no match was found. | |
481 return hasJsInterop == true ? true : null; | |
Siggi Cherem (dart-lang)
2015/10/13 02:08:53
nit: `return hasJsInterop ? true : null` (just rea
Jacob
2015/10/13 03:10:43
done
| |
482 } | |
483 | |
484 @override | |
485 void validate(Compiler compiler, | |
486 Element element, | |
487 MetadataAnnotation annotation, | |
488 ConstantValue constant) { | |
489 JavaScriptBackend backend = compiler.backend; | |
490 if (constant.getType(compiler.coreTypes).element != | |
491 backend.jsAnnotationClass) { | |
492 compiler.internalError(annotation, 'Invalid @Js(...) annotation.'); | |
493 } | |
494 } | |
495 } | |
496 | |
455 /// Annotation handler for pre-resolution detection of `@patch` annotations. | 497 /// Annotation handler for pre-resolution detection of `@patch` annotations. |
456 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> { | 498 class PatchAnnotationHandler implements EagerAnnotationHandler<PatchVersion> { |
457 const PatchAnnotationHandler(); | 499 const PatchAnnotationHandler(); |
458 | 500 |
459 PatchVersion getPatchVersion(MetadataAnnotation annotation) { | 501 PatchVersion getPatchVersion(MetadataAnnotation annotation) { |
460 if (annotation.beginToken != null) { | 502 if (annotation.beginToken != null) { |
461 if (annotation.beginToken.next.value == 'patch') { | 503 if (annotation.beginToken.next.value == 'patch') { |
462 return const PatchVersion(null); | 504 return const PatchVersion(null); |
463 } else if (annotation.beginToken.next.value == 'patch_full') { | 505 } else if (annotation.beginToken.next.value == 'patch_full') { |
464 return const PatchVersion('full'); | 506 return const PatchVersion('full'); |
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631 | 673 |
632 class PatchVersion { | 674 class PatchVersion { |
633 final String tag; | 675 final String tag; |
634 | 676 |
635 const PatchVersion(this.tag); | 677 const PatchVersion(this.tag); |
636 | 678 |
637 bool isActive(String patchTag) => tag == null || tag == patchTag; | 679 bool isActive(String patchTag) => tag == null || tag == patchTag; |
638 | 680 |
639 String toString() => 'PatchVersion($tag)'; | 681 String toString() => 'PatchVersion($tag)'; |
640 } | 682 } |
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