OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // modification, are permitted provided that the following conditions are | 3 // found in the LICENSE file. |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | 4 |
28 #ifndef V8_PROPERTY_H_ | 5 #ifndef V8_PROPERTY_H_ |
29 #define V8_PROPERTY_H_ | 6 #define V8_PROPERTY_H_ |
30 | 7 |
31 #include "allocation.h" | 8 #include "isolate.h" |
32 #include "transitions.h" | |
33 | 9 |
34 namespace v8 { | 10 namespace v8 { |
35 namespace internal { | 11 namespace internal { |
36 | 12 |
37 | |
38 // Abstraction for elements in instance-descriptor arrays. | 13 // Abstraction for elements in instance-descriptor arrays. |
39 // | 14 // |
40 // Each descriptor has a key, property attributes, property type, | 15 // Each descriptor has a key, property attributes, property type, |
41 // property index (in the actual instance-descriptor array) and | 16 // property index (in the actual instance-descriptor array) and |
42 // optionally a piece of data. | 17 // optionally a piece of data. |
43 // | |
44 | |
45 class Descriptor BASE_EMBEDDED { | 18 class Descriptor BASE_EMBEDDED { |
46 public: | 19 public: |
47 MUST_USE_RESULT MaybeObject* KeyToUniqueName() { | 20 MUST_USE_RESULT MaybeObject* KeyToUniqueName() { |
48 if (!key_->IsUniqueName()) { | 21 if (!key_->IsUniqueName()) { |
49 MaybeObject* maybe_result = | 22 MaybeObject* maybe_result = |
50 key_->GetIsolate()->heap()->InternalizeString(String::cast(key_)); | 23 key_->GetIsolate()->heap()->InternalizeString(String::cast(key_)); |
51 if (!maybe_result->To(&key_)) return maybe_result; | 24 if (!maybe_result->To(&key_)) return maybe_result; |
52 } | 25 } |
53 return key_; | 26 return key_; |
54 } | 27 } |
(...skipping 34 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
89 Representation representation, | 62 Representation representation, |
90 int field_index = 0) | 63 int field_index = 0) |
91 : key_(key), | 64 : key_(key), |
92 value_(value), | 65 value_(value), |
93 details_(attributes, type, representation, field_index) { } | 66 details_(attributes, type, representation, field_index) { } |
94 | 67 |
95 friend class DescriptorArray; | 68 friend class DescriptorArray; |
96 }; | 69 }; |
97 | 70 |
98 | 71 |
99 class FieldDescriptor: public Descriptor { | 72 class FieldDescriptor V8_FINAL : public Descriptor { |
100 public: | 73 public: |
101 FieldDescriptor(Name* key, | 74 FieldDescriptor(Name* key, |
102 int field_index, | 75 int field_index, |
103 PropertyAttributes attributes, | 76 PropertyAttributes attributes, |
104 Representation representation) | 77 Representation representation) |
105 : Descriptor(key, Smi::FromInt(0), attributes, | 78 : Descriptor(key, Smi::FromInt(0), attributes, |
106 FIELD, representation, field_index) {} | 79 FIELD, representation, field_index) {} |
107 }; | 80 }; |
108 | 81 |
109 | 82 |
110 class ConstantDescriptor: public Descriptor { | 83 class ConstantDescriptor V8_FINAL : public Descriptor { |
111 public: | 84 public: |
112 ConstantDescriptor(Name* key, | 85 ConstantDescriptor(Name* key, |
113 Object* value, | 86 Object* value, |
114 PropertyAttributes attributes) | 87 PropertyAttributes attributes) |
115 : Descriptor(key, value, attributes, CONSTANT, | 88 : Descriptor(key, value, attributes, CONSTANT, |
116 value->OptimalRepresentation()) {} | 89 value->OptimalRepresentation()) {} |
117 }; | 90 }; |
118 | 91 |
119 | 92 |
120 class CallbacksDescriptor: public Descriptor { | 93 class CallbacksDescriptor V8_FINAL : public Descriptor { |
121 public: | 94 public: |
122 CallbacksDescriptor(Name* key, | 95 CallbacksDescriptor(Name* key, |
123 Object* foreign, | 96 Object* foreign, |
124 PropertyAttributes attributes) | 97 PropertyAttributes attributes) |
125 : Descriptor(key, foreign, attributes, CALLBACKS, | 98 : Descriptor(key, foreign, attributes, CALLBACKS, |
126 Representation::Tagged()) {} | 99 Representation::Tagged()) {} |
127 }; | 100 }; |
128 | 101 |
129 | 102 |
130 // Holds a property index value distinguishing if it is a field index or an | 103 // Holds a property index value distinguishing if it is a field index or an |
131 // index inside the object header. | 104 // index inside the object header. |
132 class PropertyIndex { | 105 class PropertyIndex V8_FINAL { |
133 public: | 106 public: |
134 static PropertyIndex NewFieldIndex(int index) { | 107 static PropertyIndex NewFieldIndex(int index) { |
135 return PropertyIndex(index, false); | 108 return PropertyIndex(index, false); |
136 } | 109 } |
137 static PropertyIndex NewHeaderIndex(int index) { | 110 static PropertyIndex NewHeaderIndex(int index) { |
138 return PropertyIndex(index, true); | 111 return PropertyIndex(index, true); |
139 } | 112 } |
140 | 113 |
141 bool is_field_index() { return (index_ & kHeaderIndexBit) == 0; } | 114 bool is_field_index() { return (index_ & kHeaderIndexBit) == 0; } |
142 bool is_header_index() { return (index_ & kHeaderIndexBit) != 0; } | 115 bool is_header_index() { return (index_ & kHeaderIndexBit) != 0; } |
(...skipping 27 matching lines...) Expand all Loading... |
170 | 143 |
171 PropertyIndex(int index, bool is_header_based) | 144 PropertyIndex(int index, bool is_header_based) |
172 : index_(index | (is_header_based ? kHeaderIndexBit : 0)) { | 145 : index_(index | (is_header_based ? kHeaderIndexBit : 0)) { |
173 ASSERT(index <= kIndexMask); | 146 ASSERT(index <= kIndexMask); |
174 } | 147 } |
175 | 148 |
176 int index_; | 149 int index_; |
177 }; | 150 }; |
178 | 151 |
179 | 152 |
180 class LookupResult BASE_EMBEDDED { | 153 class LookupResult V8_FINAL BASE_EMBEDDED { |
181 public: | 154 public: |
182 explicit LookupResult(Isolate* isolate) | 155 explicit LookupResult(Isolate* isolate) |
183 : isolate_(isolate), | 156 : isolate_(isolate), |
184 next_(isolate->top_lookup_result()), | 157 next_(isolate->top_lookup_result()), |
185 lookup_type_(NOT_FOUND), | 158 lookup_type_(NOT_FOUND), |
186 holder_(NULL), | 159 holder_(NULL), |
187 transition_(NULL), | 160 transition_(NULL), |
188 cacheable_(true), | 161 cacheable_(true), |
189 details_(NONE, NONEXISTENT, Representation::None()) { | 162 details_(NONE, NONEXISTENT, Representation::None()) { |
190 isolate->set_top_lookup_result(this); | 163 isolate->set_top_lookup_result(this); |
(...skipping 290 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
481 INTERCEPTOR_TYPE | 454 INTERCEPTOR_TYPE |
482 } lookup_type_; | 455 } lookup_type_; |
483 | 456 |
484 JSReceiver* holder_; | 457 JSReceiver* holder_; |
485 Map* transition_; | 458 Map* transition_; |
486 int number_; | 459 int number_; |
487 bool cacheable_; | 460 bool cacheable_; |
488 PropertyDetails details_; | 461 PropertyDetails details_; |
489 }; | 462 }; |
490 | 463 |
491 | |
492 } } // namespace v8::internal | 464 } } // namespace v8::internal |
493 | 465 |
494 #endif // V8_PROPERTY_H_ | 466 #endif // V8_PROPERTY_H_ |
OLD | NEW |