OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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_KEY_ACCUMULATOR_H_ | 5 #ifndef V8_KEY_ACCUMULATOR_H_ |
6 #define V8_KEY_ACCUMULATOR_H_ | 6 #define V8_KEY_ACCUMULATOR_H_ |
7 | 7 |
| 8 #include <set> |
| 9 |
8 #include "src/isolate.h" | 10 #include "src/isolate.h" |
9 #include "src/objects.h" | 11 #include "src/objects.h" |
10 | 12 |
11 namespace v8 { | 13 namespace v8 { |
12 namespace internal { | 14 namespace internal { |
13 | 15 |
14 enum AddKeyConversion { DO_NOT_CONVERT, CONVERT_TO_ARRAY_INDEX, PROXY_MAGIC }; | 16 enum AddKeyConversion { DO_NOT_CONVERT, CONVERT_TO_ARRAY_INDEX, PROXY_MAGIC }; |
15 | 17 |
16 // This is a helper class for JSReceiver::GetKeys which collects and sorts keys. | 18 // This is a helper class for JSReceiver::GetKeys which collects and sorts keys. |
17 // GetKeys needs to sort keys per prototype level, first showing the integer | 19 // GetKeys needs to sort keys per prototype level, first showing the integer |
(...skipping 20 matching lines...) Expand all Loading... |
38 bool AddKey(uint32_t key); | 40 bool AddKey(uint32_t key); |
39 bool AddKey(Object* key, AddKeyConversion convert = DO_NOT_CONVERT); | 41 bool AddKey(Object* key, AddKeyConversion convert = DO_NOT_CONVERT); |
40 bool AddKey(Handle<Object> key, AddKeyConversion convert = DO_NOT_CONVERT); | 42 bool AddKey(Handle<Object> key, AddKeyConversion convert = DO_NOT_CONVERT); |
41 void AddKeys(Handle<FixedArray> array, | 43 void AddKeys(Handle<FixedArray> array, |
42 AddKeyConversion convert = DO_NOT_CONVERT); | 44 AddKeyConversion convert = DO_NOT_CONVERT); |
43 void AddKeys(Handle<JSObject> array, | 45 void AddKeys(Handle<JSObject> array, |
44 AddKeyConversion convert = DO_NOT_CONVERT); | 46 AddKeyConversion convert = DO_NOT_CONVERT); |
45 void AddKeysFromProxy(Handle<JSObject> array); | 47 void AddKeysFromProxy(Handle<JSObject> array); |
46 Maybe<bool> AddKeysFromProxy(Handle<JSProxy> proxy, Handle<FixedArray> keys); | 48 Maybe<bool> AddKeysFromProxy(Handle<JSProxy> proxy, Handle<FixedArray> keys); |
47 void AddElementKeysFromInterceptor(Handle<JSObject> array); | 49 void AddElementKeysFromInterceptor(Handle<JSObject> array); |
| 50 void HideKey(uint32_t key); |
| 51 void HideKey(Object* key); |
| 52 void HideKey(Handle<Object> key); |
| 53 void Prepare(); |
48 // Jump to the next level, pushing the current |levelLength_| to | 54 // Jump to the next level, pushing the current |levelLength_| to |
49 // |levelLengths_| and adding a new list to |elements_|. | 55 // |levelLengths_| and adding a new list to |elements_|. |
50 void NextPrototype(); | 56 void NextPrototype(); |
51 // Sort the integer indices in the last list in |elements_| | 57 // Sort the integer indices in the last list in |elements_| |
52 void SortCurrentElementsList(); | 58 void SortCurrentElementsList(); |
53 Handle<FixedArray> GetKeys(GetKeysConversion convert = KEEP_NUMBERS); | 59 Handle<FixedArray> GetKeys(GetKeysConversion convert = KEEP_NUMBERS); |
54 int length() { return length_; } | 60 int length() { return length_; } |
55 Isolate* isolate() { return isolate_; } | 61 Isolate* isolate() { return isolate_; } |
56 | 62 |
57 private: | 63 private: |
58 bool AddIntegerKey(uint32_t key); | 64 bool AddIntegerKey(uint32_t key); |
59 bool AddStringKey(Handle<Object> key, AddKeyConversion convert); | 65 bool AddStringKey(Handle<Object> key, AddKeyConversion convert); |
60 bool AddSymbolKey(Handle<Object> array); | 66 bool AddSymbolKey(Handle<Object> array); |
61 void SortCurrentElementsListRemoveDuplicates(); | 67 void SortCurrentElementsListRemoveDuplicates(); |
| 68 bool IsKeyHidden(Handle<Object> key); |
| 69 bool IsKeyHidden(uint32_t key); |
62 | 70 |
63 Isolate* isolate_; | 71 Isolate* isolate_; |
64 PropertyFilter filter_; | 72 PropertyFilter filter_; |
65 // |elements_| contains the sorted element keys (indices) per level. | 73 // |elements_| contains the sorted element keys (indices) per level. |
66 std::vector<std::vector<uint32_t>*> elements_; | 74 std::vector<std::vector<uint32_t>*> elements_; |
67 // |protoLengths_| contains the total number of keys (elements + properties) | 75 // |protoLengths_| contains the total number of keys (elements + properties) |
68 // per level. Negative values mark counts for a level with keys from a proxy. | 76 // per level. Negative values mark counts for a level with keys from a proxy. |
69 std::vector<int> level_lengths_; | 77 std::vector<int> level_lengths_; |
70 // |string_properties_| contains the unique String property keys for all | 78 // |string_properties_| contains the unique String property keys for all |
71 // levels in insertion order per level. | 79 // levels in insertion order per level. |
72 Handle<OrderedHashSet> string_properties_; | 80 Handle<OrderedHashSet> string_properties_; |
73 // |symbol_properties_| contains the unique Symbol property keys for all | 81 // |symbol_properties_| contains the unique Symbol property keys for all |
74 // levels in insertion order per level. | 82 // levels in insertion order per level. |
75 Handle<OrderedHashSet> symbol_properties_; | 83 Handle<OrderedHashSet> symbol_properties_; |
| 84 // |hidden_keys_| keeps track of the non-enumerable property keys to prevent |
| 85 // them from being added to the accumulator if they reappear higher up in the |
| 86 // prototype-chain. |
| 87 Handle<OrderedHashSet> hidden_keys_; |
| 88 std::set<uint32_t> hidden_element_keys_; |
76 // |length_| keeps track of the total number of all element and property keys. | 89 // |length_| keeps track of the total number of all element and property keys. |
77 int length_ = 0; | 90 int length_ = 0; |
78 // |levelLength_| keeps track of the number of String keys in the current | 91 // |levelLength_| keeps track of the number of String keys in the current |
79 // level. | 92 // level. |
80 int level_string_length_ = 0; | 93 int level_string_length_ = 0; |
81 // |levelSymbolLength_| keeps track of the number of Symbol keys in the | 94 // |levelSymbolLength_| keeps track of the number of Symbol keys in the |
82 // current level. | 95 // current level. |
83 int level_symbol_length_ = 0; | 96 int level_symbol_length_ = 0; |
84 | 97 |
85 DISALLOW_COPY_AND_ASSIGN(KeyAccumulator); | 98 DISALLOW_COPY_AND_ASSIGN(KeyAccumulator); |
86 }; | 99 }; |
87 | 100 |
88 | 101 |
89 } // namespace internal | 102 } // namespace internal |
90 } // namespace v8 | 103 } // namespace v8 |
91 | 104 |
92 | 105 |
93 #endif // V8_KEY_ACCUMULATOR_H_ | 106 #endif // V8_KEY_ACCUMULATOR_H_ |
OLD | NEW |