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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 "src/isolate.h" | 8 #include "src/isolate.h" |
9 #include "src/objects.h" | 9 #include "src/objects.h" |
10 | 10 |
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24 // collected in |string_properties_|, a single OrderedHashSet (similar for | 24 // collected in |string_properties_|, a single OrderedHashSet (similar for |
25 // Symbols in |symbol_properties_|. To separate the keys per level later when | 25 // Symbols in |symbol_properties_|. To separate the keys per level later when |
26 // assembling the final list, |levelLengths_| keeps track of the number of | 26 // assembling the final list, |levelLengths_| keeps track of the number of |
27 // String and Symbol keys per level. | 27 // String and Symbol keys per level. |
28 // | 28 // |
29 // Only unique keys are kept by the KeyAccumulator, strings are stored in a | 29 // Only unique keys are kept by the KeyAccumulator, strings are stored in a |
30 // HashSet for inexpensive lookups. Integer keys are kept in sorted lists which | 30 // HashSet for inexpensive lookups. Integer keys are kept in sorted lists which |
31 // are more compact and allow for reasonably fast includes check. | 31 // are more compact and allow for reasonably fast includes check. |
32 class KeyAccumulator final BASE_EMBEDDED { | 32 class KeyAccumulator final BASE_EMBEDDED { |
33 public: | 33 public: |
34 KeyAccumulator(Isolate* isolate, PropertyFilter filter) | 34 KeyAccumulator(Isolate* isolate, KeyCollectionType type, |
35 : isolate_(isolate), filter_(filter) {} | 35 PropertyFilter filter) |
| 36 : isolate_(isolate), type_(type), filter_(filter) {} |
36 ~KeyAccumulator(); | 37 ~KeyAccumulator(); |
37 | 38 |
38 bool AddKey(uint32_t key); | 39 bool AddKey(uint32_t key); |
39 bool AddKey(Object* key, AddKeyConversion convert); | 40 bool AddKey(Object* key, AddKeyConversion convert); |
40 bool AddKey(Handle<Object> key, AddKeyConversion convert); | 41 bool AddKey(Handle<Object> key, AddKeyConversion convert); |
41 void AddKeys(Handle<FixedArray> array, AddKeyConversion convert); | 42 void AddKeys(Handle<FixedArray> array, AddKeyConversion convert); |
42 void AddKeys(Handle<JSObject> array, AddKeyConversion convert); | 43 void AddKeys(Handle<JSObject> array, AddKeyConversion convert); |
43 void AddKeysFromProxy(Handle<JSObject> array); | 44 void AddKeysFromProxy(Handle<JSObject> array); |
44 Maybe<bool> AddKeysFromProxy(Handle<JSProxy> proxy, Handle<FixedArray> keys); | 45 Maybe<bool> AddKeysFromProxy(Handle<JSProxy> proxy, Handle<FixedArray> keys); |
45 void AddElementKeysFromInterceptor(Handle<JSObject> array); | 46 void AddElementKeysFromInterceptor(Handle<JSObject> array); |
46 // Jump to the next level, pushing the current |levelLength_| to | 47 // Jump to the next level, pushing the current |levelLength_| to |
47 // |levelLengths_| and adding a new list to |elements_|. | 48 // |levelLengths_| and adding a new list to |elements_|. |
48 void NextPrototype(); | 49 void NextPrototype(); |
49 // Sort the integer indices in the last list in |elements_| | 50 // Sort the integer indices in the last list in |elements_| |
50 void SortCurrentElementsList(); | 51 void SortCurrentElementsList(); |
51 Handle<FixedArray> GetKeys(GetKeysConversion convert = KEEP_NUMBERS); | 52 Handle<FixedArray> GetKeys(GetKeysConversion convert = KEEP_NUMBERS); |
52 int length() { return length_; } | 53 int length() { return length_; } |
53 Isolate* isolate() { return isolate_; } | 54 Isolate* isolate() { return isolate_; } |
54 | 55 |
55 private: | 56 private: |
56 bool AddIntegerKey(uint32_t key); | 57 bool AddIntegerKey(uint32_t key); |
57 bool AddStringKey(Handle<Object> key, AddKeyConversion convert); | 58 bool AddStringKey(Handle<Object> key, AddKeyConversion convert); |
58 bool AddSymbolKey(Handle<Object> array); | 59 bool AddSymbolKey(Handle<Object> array); |
59 void SortCurrentElementsListRemoveDuplicates(); | 60 void SortCurrentElementsListRemoveDuplicates(); |
60 | 61 |
61 Isolate* isolate_; | 62 Isolate* isolate_; |
| 63 KeyCollectionType type_; |
62 PropertyFilter filter_; | 64 PropertyFilter filter_; |
63 // |elements_| contains the sorted element keys (indices) per level. | 65 // |elements_| contains the sorted element keys (indices) per level. |
64 std::vector<std::vector<uint32_t>*> elements_; | 66 std::vector<std::vector<uint32_t>*> elements_; |
65 // |protoLengths_| contains the total number of keys (elements + properties) | 67 // |protoLengths_| contains the total number of keys (elements + properties) |
66 // per level. Negative values mark counts for a level with keys from a proxy. | 68 // per level. Negative values mark counts for a level with keys from a proxy. |
67 std::vector<int> level_lengths_; | 69 std::vector<int> level_lengths_; |
68 // |string_properties_| contains the unique String property keys for all | 70 // |string_properties_| contains the unique String property keys for all |
69 // levels in insertion order per level. | 71 // levels in insertion order per level. |
70 Handle<OrderedHashSet> string_properties_; | 72 Handle<OrderedHashSet> string_properties_; |
71 // |symbol_properties_| contains the unique Symbol property keys for all | 73 // |symbol_properties_| contains the unique Symbol property keys for all |
72 // levels in insertion order per level. | 74 // levels in insertion order per level. |
73 Handle<OrderedHashSet> symbol_properties_; | 75 Handle<OrderedHashSet> symbol_properties_; |
| 76 Handle<FixedArray> ownProxyKeys_; |
74 // |length_| keeps track of the total number of all element and property keys. | 77 // |length_| keeps track of the total number of all element and property keys. |
75 int length_ = 0; | 78 int length_ = 0; |
76 // |levelLength_| keeps track of the number of String keys in the current | 79 // |levelLength_| keeps track of the number of String keys in the current |
77 // level. | 80 // level. |
78 int level_string_length_ = 0; | 81 int level_string_length_ = 0; |
79 // |levelSymbolLength_| keeps track of the number of Symbol keys in the | 82 // |levelSymbolLength_| keeps track of the number of Symbol keys in the |
80 // current level. | 83 // current level. |
81 int level_symbol_length_ = 0; | 84 int level_symbol_length_ = 0; |
82 | 85 |
83 DISALLOW_COPY_AND_ASSIGN(KeyAccumulator); | 86 DISALLOW_COPY_AND_ASSIGN(KeyAccumulator); |
84 }; | 87 }; |
85 | 88 |
86 | 89 |
87 } // namespace internal | 90 } // namespace internal |
88 } // namespace v8 | 91 } // namespace v8 |
89 | 92 |
90 | 93 |
91 #endif // V8_KEY_ACCUMULATOR_H_ | 94 #endif // V8_KEY_ACCUMULATOR_H_ |
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