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1 // Copyright 2007-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2007-2008 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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2718 static const int kMapInstanceTypeOffset = sizeof(void*) + sizeof(int); | 2718 static const int kMapInstanceTypeOffset = sizeof(void*) + sizeof(int); |
2719 static const int kStringResourceOffset = 2 * sizeof(void*); | 2719 static const int kStringResourceOffset = 2 * sizeof(void*); |
2720 static const int kProxyProxyOffset = sizeof(void*); | 2720 static const int kProxyProxyOffset = sizeof(void*); |
2721 static const int kJSObjectHeaderSize = 3 * sizeof(void*); | 2721 static const int kJSObjectHeaderSize = 3 * sizeof(void*); |
2722 static const int kFullStringRepresentationMask = 0x07; | 2722 static const int kFullStringRepresentationMask = 0x07; |
2723 static const int kExternalTwoByteRepresentationTag = 0x03; | 2723 static const int kExternalTwoByteRepresentationTag = 0x03; |
2724 static const int kAlignedPointerShift = 2; | 2724 static const int kAlignedPointerShift = 2; |
2725 | 2725 |
2726 // These constants are compiler dependent so their values must be | 2726 // These constants are compiler dependent so their values must be |
2727 // defined within the implementation. | 2727 // defined within the implementation. |
2728 static int kJSObjectType; | 2728 V8EXPORT static int kJSObjectType; |
2729 static int kFirstNonstringType; | 2729 V8EXPORT static int kFirstNonstringType; |
2730 static int kProxyType; | 2730 V8EXPORT static int kProxyType; |
2731 | 2731 |
2732 static inline bool HasHeapObjectTag(internal::Object* value) { | 2732 static inline bool HasHeapObjectTag(internal::Object* value) { |
2733 return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) == | 2733 return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) == |
2734 kHeapObjectTag); | 2734 kHeapObjectTag); |
2735 } | 2735 } |
2736 | 2736 |
2737 static inline bool HasSmiTag(internal::Object* value) { | 2737 static inline bool HasSmiTag(internal::Object* value) { |
2738 return ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag); | 2738 return ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag); |
2739 } | 2739 } |
2740 | 2740 |
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3080 | 3080 |
3081 } // namespace v8 | 3081 } // namespace v8 |
3082 | 3082 |
3083 | 3083 |
3084 #undef V8EXPORT | 3084 #undef V8EXPORT |
3085 #undef V8EXPORT_INLINE | 3085 #undef V8EXPORT_INLINE |
3086 #undef TYPE_CHECK | 3086 #undef TYPE_CHECK |
3087 | 3087 |
3088 | 3088 |
3089 #endif // V8_H_ | 3089 #endif // V8_H_ |
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