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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 // 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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1931 Isolate* isolate, | 1931 Isolate* isolate, |
1932 ElementsKind elements_kind); | 1932 ElementsKind elements_kind); |
1933 MUST_USE_RESULT MaybeObject* GetElementsTransitionMapSlow( | 1933 MUST_USE_RESULT MaybeObject* GetElementsTransitionMapSlow( |
1934 ElementsKind elements_kind); | 1934 ElementsKind elements_kind); |
1935 | 1935 |
1936 static Handle<Object> TransitionElementsKind(Handle<JSObject> object, | 1936 static Handle<Object> TransitionElementsKind(Handle<JSObject> object, |
1937 ElementsKind to_kind); | 1937 ElementsKind to_kind); |
1938 | 1938 |
1939 MUST_USE_RESULT MaybeObject* TransitionElementsKind(ElementsKind to_kind); | 1939 MUST_USE_RESULT MaybeObject* TransitionElementsKind(ElementsKind to_kind); |
1940 | 1940 |
1941 // Converts a descriptor of any other type to a real field, | 1941 // Replaces an existing transition with a transition to a map with a FIELD. |
1942 // backed by the properties array. Descriptors of visible | 1942 MUST_USE_RESULT MaybeObject* ConvertTransitionToMapTransition( |
1943 // types, such as CONSTANT_FUNCTION, keep their enumeration order. | 1943 int transition_index, |
1944 // Converts the descriptor on the original object's map to a | |
1945 // map transition, and the the new field is on the object's new map. | |
1946 MUST_USE_RESULT MaybeObject* ConvertDescriptorToFieldAndMapTransition( | |
1947 String* name, | 1944 String* name, |
1948 Object* new_value, | 1945 Object* new_value, |
1949 PropertyAttributes attributes); | 1946 PropertyAttributes attributes); |
1950 | 1947 |
1951 // Converts a descriptor of any other type to a real field, | 1948 // Converts a descriptor of any other type to a real field, backed by the |
1952 // backed by the properties array. Descriptors of visible | 1949 // properties array. |
1953 // types, such as CONSTANT_FUNCTION, keep their enumeration order. | |
1954 MUST_USE_RESULT MaybeObject* ConvertDescriptorToField( | 1950 MUST_USE_RESULT MaybeObject* ConvertDescriptorToField( |
1955 String* name, | 1951 String* name, |
1956 Object* new_value, | 1952 Object* new_value, |
1957 PropertyAttributes attributes); | 1953 PropertyAttributes attributes); |
1958 | 1954 |
1959 // Add a property to a fast-case object. | 1955 // Add a property to a fast-case object. |
1960 MUST_USE_RESULT MaybeObject* AddFastProperty( | 1956 MUST_USE_RESULT MaybeObject* AddFastProperty( |
1961 String* name, | 1957 String* name, |
1962 Object* value, | 1958 Object* value, |
1963 PropertyAttributes attributes, | 1959 PropertyAttributes attributes, |
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4804 | 4800 |
4805 static bool IsValidElementsTransition(ElementsKind from_kind, | 4801 static bool IsValidElementsTransition(ElementsKind from_kind, |
4806 ElementsKind to_kind); | 4802 ElementsKind to_kind); |
4807 | 4803 |
4808 inline bool HasTransitionArray(); | 4804 inline bool HasTransitionArray(); |
4809 inline bool HasElementsTransition(); | 4805 inline bool HasElementsTransition(); |
4810 inline Map* elements_transition_map(); | 4806 inline Map* elements_transition_map(); |
4811 MUST_USE_RESULT inline MaybeObject* set_elements_transition_map( | 4807 MUST_USE_RESULT inline MaybeObject* set_elements_transition_map( |
4812 Map* transitioned_map); | 4808 Map* transitioned_map); |
4813 inline TransitionArray* transitions(); | 4809 inline TransitionArray* transitions(); |
4814 MUST_USE_RESULT inline MaybeObject* AddTransition(String* key, | 4810 inline void SetTransition(int index, Object* value); |
4815 Object* value); | 4811 MUST_USE_RESULT inline MaybeObject* AddTransition(String* key, Object* value); |
4816 MUST_USE_RESULT inline MaybeObject* set_transitions( | 4812 MUST_USE_RESULT inline MaybeObject* set_transitions( |
4817 TransitionArray* transitions); | 4813 TransitionArray* transitions); |
4818 inline void ClearTransitions(Heap* heap, | 4814 inline void ClearTransitions(Heap* heap, |
4819 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); | 4815 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); |
4820 | 4816 |
4821 // Tells whether the map is attached to SharedFunctionInfo | 4817 // Tells whether the map is attached to SharedFunctionInfo |
4822 // (for inobject slack tracking). | 4818 // (for inobject slack tracking). |
4823 inline void set_attached_to_shared_function_info(bool value); | 4819 inline void set_attached_to_shared_function_info(bool value); |
4824 | 4820 |
4825 inline bool attached_to_shared_function_info(); | 4821 inline bool attached_to_shared_function_info(); |
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8885 } else { | 8881 } else { |
8886 value &= ~(1 << bit_position); | 8882 value &= ~(1 << bit_position); |
8887 } | 8883 } |
8888 return value; | 8884 return value; |
8889 } | 8885 } |
8890 }; | 8886 }; |
8891 | 8887 |
8892 } } // namespace v8::internal | 8888 } } // namespace v8::internal |
8893 | 8889 |
8894 #endif // V8_OBJECTS_H_ | 8890 #endif // V8_OBJECTS_H_ |
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