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1 // Copyright 2007-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2007-2009 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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3454 static const int kHeapObjectMapOffset = 0; | 3454 static const int kHeapObjectMapOffset = 0; |
3455 static const int kMapInstanceTypeOffset = kApiPointerSize + kApiIntSize; | 3455 static const int kMapInstanceTypeOffset = kApiPointerSize + kApiIntSize; |
3456 static const int kStringResourceOffset = | 3456 static const int kStringResourceOffset = |
3457 InternalConstants<kApiPointerSize>::kStringResourceOffset; | 3457 InternalConstants<kApiPointerSize>::kStringResourceOffset; |
3458 | 3458 |
3459 static const int kProxyProxyOffset = kApiPointerSize; | 3459 static const int kProxyProxyOffset = kApiPointerSize; |
3460 static const int kJSObjectHeaderSize = 3 * kApiPointerSize; | 3460 static const int kJSObjectHeaderSize = 3 * kApiPointerSize; |
3461 static const int kFullStringRepresentationMask = 0x07; | 3461 static const int kFullStringRepresentationMask = 0x07; |
3462 static const int kExternalTwoByteRepresentationTag = 0x02; | 3462 static const int kExternalTwoByteRepresentationTag = 0x02; |
3463 | 3463 |
3464 static const int kJSObjectType = 0xa0; | 3464 static const int kJSObjectType = 0xa1; |
3465 static const int kFirstNonstringType = 0x80; | 3465 static const int kFirstNonstringType = 0x80; |
3466 static const int kProxyType = 0x85; | 3466 static const int kProxyType = 0x85; |
3467 | 3467 |
3468 static inline bool HasHeapObjectTag(internal::Object* value) { | 3468 static inline bool HasHeapObjectTag(internal::Object* value) { |
3469 return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) == | 3469 return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) == |
3470 kHeapObjectTag); | 3470 kHeapObjectTag); |
3471 } | 3471 } |
3472 | 3472 |
3473 static inline bool HasSmiTag(internal::Object* value) { | 3473 static inline bool HasSmiTag(internal::Object* value) { |
3474 return ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag); | 3474 return ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag); |
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3855 | 3855 |
3856 | 3856 |
3857 } // namespace v8 | 3857 } // namespace v8 |
3858 | 3858 |
3859 | 3859 |
3860 #undef V8EXPORT | 3860 #undef V8EXPORT |
3861 #undef TYPE_CHECK | 3861 #undef TYPE_CHECK |
3862 | 3862 |
3863 | 3863 |
3864 #endif // V8_H_ | 3864 #endif // V8_H_ |
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