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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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391 // | 391 // |
392 // 3) result.is_null(): | 392 // 3) result.is_null(): |
393 // There was no binding found, *index is always -1 and *attributes is | 393 // There was no binding found, *index is always -1 and *attributes is |
394 // always ABSENT. | 394 // always ABSENT. |
395 Handle<Object> Lookup(Handle<String> name, | 395 Handle<Object> Lookup(Handle<String> name, |
396 ContextLookupFlags flags, | 396 ContextLookupFlags flags, |
397 int* index, | 397 int* index, |
398 PropertyAttributes* attributes, | 398 PropertyAttributes* attributes, |
399 BindingFlags* binding_flags); | 399 BindingFlags* binding_flags); |
400 | 400 |
401 // Determine if a local variable with the given name exists in a | |
402 // context. Do not consider context extension objects. This is | |
403 // used for compiling code using eval. If the context surrounding | |
404 // the eval call does not have a local variable with this name and | |
405 // does not contain a with statement the property is global unless | |
406 // it is shadowed by a property in an extension object introduced by | |
407 // eval. | |
408 bool GlobalIfNotShadowedByEval(Handle<String> name); | |
409 | |
410 // Determine if any function scope in the context call eval and if | |
411 // any of those calls are in non-strict mode. | |
412 void ComputeEvalScopeInfo(bool* outer_scope_calls_non_strict_eval); | |
413 | |
414 // Code generation support. | 401 // Code generation support. |
415 static int SlotOffset(int index) { | 402 static int SlotOffset(int index) { |
416 return kHeaderSize + index * kPointerSize - kHeapObjectTag; | 403 return kHeaderSize + index * kPointerSize - kHeapObjectTag; |
417 } | 404 } |
418 | 405 |
419 static const int kSize = kHeaderSize + GLOBAL_CONTEXT_SLOTS * kPointerSize; | 406 static const int kSize = kHeaderSize + GLOBAL_CONTEXT_SLOTS * kPointerSize; |
420 | 407 |
421 // GC support. | 408 // GC support. |
422 typedef FixedBodyDescriptor< | 409 typedef FixedBodyDescriptor< |
423 kHeaderSize, kSize, kSize> ScavengeBodyDescriptor; | 410 kHeaderSize, kSize, kSize> ScavengeBodyDescriptor; |
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434 #ifdef DEBUG | 421 #ifdef DEBUG |
435 // Bootstrapping-aware type checks. | 422 // Bootstrapping-aware type checks. |
436 static bool IsBootstrappingOrContext(Object* object); | 423 static bool IsBootstrappingOrContext(Object* object); |
437 static bool IsBootstrappingOrGlobalObject(Object* object); | 424 static bool IsBootstrappingOrGlobalObject(Object* object); |
438 #endif | 425 #endif |
439 }; | 426 }; |
440 | 427 |
441 } } // namespace v8::internal | 428 } } // namespace v8::internal |
442 | 429 |
443 #endif // V8_CONTEXTS_H_ | 430 #endif // V8_CONTEXTS_H_ |
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