OLD | NEW |
1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_FIELD_INDEX_H_ | 5 #ifndef V8_FIELD_INDEX_H_ |
6 #define V8_FIELD_INDEX_H_ | 6 #define V8_FIELD_INDEX_H_ |
7 | 7 |
8 #include "src/property-details.h" | 8 #include "src/property-details.h" |
9 #include "src/utils.h" | 9 #include "src/utils.h" |
10 | 10 |
11 namespace v8 { | 11 namespace v8 { |
12 namespace internal { | 12 namespace internal { |
13 | 13 |
14 class Map; | 14 class Map; |
15 | 15 |
16 // Wrapper class to hold a field index, usually but not necessarily generated | 16 // Wrapper class to hold a field index, usually but not necessarily generated |
17 // from a property index. When available, the wrapper class captures additional | 17 // from a property index. When available, the wrapper class captures additional |
18 // information to allow the field index to be translated back into the property | 18 // information to allow the field index to be translated back into the property |
19 // index it was originally generated from. | 19 // index it was originally generated from. |
20 class FieldIndex final { | 20 class FieldIndex final { |
21 public: | 21 public: |
22 FieldIndex() : bit_field_(0) {} | 22 FieldIndex() : bit_field_(0) {} |
23 | 23 |
24 static FieldIndex ForPropertyIndex(Map* map, | 24 static FieldIndex ForPropertyIndex(Map* map, |
25 int index, | 25 int index, |
26 bool is_double = false); | 26 bool is_double = false); |
27 static FieldIndex ForInObjectOffset(int offset, Map* map = NULL); | 27 static FieldIndex ForInObjectOffset(int offset, Map* map = NULL); |
28 static FieldIndex ForDescriptor(Map* map, int descriptor_index); | 28 static FieldIndex ForDescriptor(Map* map, int descriptor_index); |
29 static FieldIndex ForLoadByFieldIndex(Map* map, int index); | 29 static FieldIndex ForLoadByFieldIndex(Map* map, int index); |
30 static FieldIndex ForLoadByFieldOffset(Map* map, int index); | |
31 static FieldIndex ForKeyedLookupCacheIndex(Map* map, int index); | 30 static FieldIndex ForKeyedLookupCacheIndex(Map* map, int index); |
32 static FieldIndex FromFieldAccessStubKey(int key); | 31 static FieldIndex FromFieldAccessStubKey(int key); |
33 | 32 |
34 int GetLoadByFieldIndex() const; | 33 int GetLoadByFieldIndex() const; |
35 int GetLoadByFieldOffset() const; | 34 int GetLoadByFieldOffset() const; |
36 | 35 |
37 bool is_inobject() const { | 36 bool is_inobject() const { |
38 return IsInObjectBits::decode(bit_field_); | 37 return IsInObjectBits::decode(bit_field_); |
39 } | 38 } |
40 | 39 |
(...skipping 76 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
117 : public BitField<bool, FirstInobjectPropertyOffsetBits::kNext, 1> {}; | 116 : public BitField<bool, FirstInobjectPropertyOffsetBits::kNext, 1> {}; |
118 STATIC_ASSERT(IsHiddenField::kNext <= 32); | 117 STATIC_ASSERT(IsHiddenField::kNext <= 32); |
119 | 118 |
120 int bit_field_; | 119 int bit_field_; |
121 }; | 120 }; |
122 | 121 |
123 } // namespace internal | 122 } // namespace internal |
124 } // namespace v8 | 123 } // namespace v8 |
125 | 124 |
126 #endif | 125 #endif |
OLD | NEW |