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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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_OBJECTS_H_ | 5 #ifndef V8_OBJECTS_H_ |
6 #define V8_OBJECTS_H_ | 6 #define V8_OBJECTS_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 #include <memory> | 9 #include <memory> |
10 | 10 |
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63 // - JSWeakMap | 63 // - JSWeakMap |
64 // - JSWeakSet | 64 // - JSWeakSet |
65 // - JSRegExp | 65 // - JSRegExp |
66 // - JSFunction | 66 // - JSFunction |
67 // - JSGeneratorObject | 67 // - JSGeneratorObject |
68 // - JSGlobalObject | 68 // - JSGlobalObject |
69 // - JSGlobalProxy | 69 // - JSGlobalProxy |
70 // - JSValue | 70 // - JSValue |
71 // - JSDate | 71 // - JSDate |
72 // - JSMessageObject | 72 // - JSMessageObject |
73 // - JSModule | |
74 // - JSProxy | 73 // - JSProxy |
75 // - FixedArrayBase | 74 // - FixedArrayBase |
76 // - ByteArray | 75 // - ByteArray |
77 // - BytecodeArray | 76 // - BytecodeArray |
78 // - FixedArray | 77 // - FixedArray |
79 // - DescriptorArray | 78 // - DescriptorArray |
80 // - FrameArray | 79 // - FrameArray |
81 // - LiteralsArray | 80 // - LiteralsArray |
82 // - HashTable | 81 // - HashTable |
83 // - Dictionary | 82 // - Dictionary |
84 // - StringTable | 83 // - StringTable |
85 // - StringSet | 84 // - StringSet |
86 // - CompilationCacheTable | 85 // - CompilationCacheTable |
87 // - CodeCacheHashTable | 86 // - CodeCacheHashTable |
88 // - MapCache | 87 // - MapCache |
89 // - OrderedHashTable | 88 // - OrderedHashTable |
90 // - OrderedHashSet | 89 // - OrderedHashSet |
91 // - OrderedHashMap | 90 // - OrderedHashMap |
92 // - Context | 91 // - Context |
93 // - TypeFeedbackMetadata | 92 // - TypeFeedbackMetadata |
94 // - TypeFeedbackVector | 93 // - TypeFeedbackVector |
95 // - TemplateList | 94 // - TemplateList |
96 // - TransitionArray | 95 // - TransitionArray |
97 // - ScopeInfo | 96 // - ScopeInfo |
98 // - ModuleInfoEntry | |
99 // - ModuleInfo | 97 // - ModuleInfo |
100 // - ScriptContextTable | 98 // - ScriptContextTable |
101 // - WeakFixedArray | 99 // - WeakFixedArray |
102 // - FixedDoubleArray | 100 // - FixedDoubleArray |
103 // - Name | 101 // - Name |
104 // - String | 102 // - String |
105 // - SeqString | 103 // - SeqString |
106 // - SeqOneByteString | 104 // - SeqOneByteString |
107 // - SeqTwoByteString | 105 // - SeqTwoByteString |
108 // - SlicedString | 106 // - SlicedString |
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874 class ElementsAccessor; | 872 class ElementsAccessor; |
875 class FixedArrayBase; | 873 class FixedArrayBase; |
876 class FunctionLiteral; | 874 class FunctionLiteral; |
877 class JSGlobalObject; | 875 class JSGlobalObject; |
878 class KeyAccumulator; | 876 class KeyAccumulator; |
879 class LayoutDescriptor; | 877 class LayoutDescriptor; |
880 class LiteralsArray; | 878 class LiteralsArray; |
881 class LookupIterator; | 879 class LookupIterator; |
882 class FieldType; | 880 class FieldType; |
883 class ModuleDescriptor; | 881 class ModuleDescriptor; |
884 class ModuleInfoEntry; | |
885 class ModuleInfo; | 882 class ModuleInfo; |
886 class ObjectHashTable; | 883 class ObjectHashTable; |
887 class ObjectVisitor; | 884 class ObjectVisitor; |
888 class PropertyCell; | 885 class PropertyCell; |
889 class PropertyDescriptor; | 886 class PropertyDescriptor; |
890 class SafepointEntry; | 887 class SafepointEntry; |
891 class SharedFunctionInfo; | 888 class SharedFunctionInfo; |
892 class StringStream; | 889 class StringStream; |
893 class TypeFeedbackInfo; | 890 class TypeFeedbackInfo; |
894 class TypeFeedbackMetadata; | 891 class TypeFeedbackMetadata; |
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957 V(FixedFloat32Array) \ | 954 V(FixedFloat32Array) \ |
958 V(FixedFloat64Array) \ | 955 V(FixedFloat64Array) \ |
959 V(FixedUint8ClampedArray) \ | 956 V(FixedUint8ClampedArray) \ |
960 V(ByteArray) \ | 957 V(ByteArray) \ |
961 V(BytecodeArray) \ | 958 V(BytecodeArray) \ |
962 V(FreeSpace) \ | 959 V(FreeSpace) \ |
963 V(JSReceiver) \ | 960 V(JSReceiver) \ |
964 V(JSObject) \ | 961 V(JSObject) \ |
965 V(JSContextExtensionObject) \ | 962 V(JSContextExtensionObject) \ |
966 V(JSGeneratorObject) \ | 963 V(JSGeneratorObject) \ |
967 V(JSModule) \ | |
968 V(Map) \ | 964 V(Map) \ |
969 V(DescriptorArray) \ | 965 V(DescriptorArray) \ |
970 V(FrameArray) \ | 966 V(FrameArray) \ |
971 V(TransitionArray) \ | 967 V(TransitionArray) \ |
972 V(LiteralsArray) \ | 968 V(LiteralsArray) \ |
973 V(TypeFeedbackMetadata) \ | 969 V(TypeFeedbackMetadata) \ |
974 V(TypeFeedbackVector) \ | 970 V(TypeFeedbackVector) \ |
975 V(DeoptimizationInputData) \ | 971 V(DeoptimizationInputData) \ |
976 V(DeoptimizationOutputData) \ | 972 V(DeoptimizationOutputData) \ |
977 V(DependentCode) \ | 973 V(DependentCode) \ |
978 V(HandlerTable) \ | 974 V(HandlerTable) \ |
979 V(FixedArray) \ | 975 V(FixedArray) \ |
980 V(FixedDoubleArray) \ | 976 V(FixedDoubleArray) \ |
981 V(WeakFixedArray) \ | 977 V(WeakFixedArray) \ |
982 V(ArrayList) \ | 978 V(ArrayList) \ |
983 V(Context) \ | 979 V(Context) \ |
984 V(ScriptContextTable) \ | 980 V(ScriptContextTable) \ |
985 V(NativeContext) \ | 981 V(NativeContext) \ |
986 V(ScopeInfo) \ | 982 V(ScopeInfo) \ |
987 V(ModuleInfoEntry) \ | |
988 V(ModuleInfo) \ | 983 V(ModuleInfo) \ |
989 V(JSBoundFunction) \ | 984 V(JSBoundFunction) \ |
990 V(JSFunction) \ | 985 V(JSFunction) \ |
991 V(Code) \ | 986 V(Code) \ |
992 V(AbstractCode) \ | 987 V(AbstractCode) \ |
993 V(Oddball) \ | 988 V(Oddball) \ |
994 V(SharedFunctionInfo) \ | 989 V(SharedFunctionInfo) \ |
995 V(JSValue) \ | 990 V(JSValue) \ |
996 V(JSDate) \ | 991 V(JSDate) \ |
997 V(JSMessageObject) \ | 992 V(JSMessageObject) \ |
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4410 | 4405 |
4411 // Serializes empty scope info. | 4406 // Serializes empty scope info. |
4412 static ScopeInfo* Empty(Isolate* isolate); | 4407 static ScopeInfo* Empty(Isolate* isolate); |
4413 | 4408 |
4414 #ifdef DEBUG | 4409 #ifdef DEBUG |
4415 void Print(); | 4410 void Print(); |
4416 #endif | 4411 #endif |
4417 | 4412 |
4418 // The layout of the static part of a ScopeInfo is as follows. Each entry is | 4413 // The layout of the static part of a ScopeInfo is as follows. Each entry is |
4419 // numeric and occupies one array slot. | 4414 // numeric and occupies one array slot. |
4420 // 1. A set of properties of the scope. | 4415 // 1. A set of properties of the scope |
4421 // 2. The number of parameters. For non-function scopes this is 0. | 4416 // 2. The number of parameters. For non-function scopes this is 0. |
4422 // 3. The number of non-parameter variables allocated on the stack. | 4417 // 3. The number of non-parameter variables allocated on the stack. |
4423 // 4. The number of non-parameter and parameter variables allocated in the | 4418 // 4. The number of non-parameter and parameter variables allocated in the |
4424 // context. | 4419 // context. |
4425 #define FOR_EACH_SCOPE_INFO_NUMERIC_FIELD(V) \ | 4420 #define FOR_EACH_SCOPE_INFO_NUMERIC_FIELD(V) \ |
4426 V(Flags) \ | 4421 V(Flags) \ |
4427 V(ParameterCount) \ | 4422 V(ParameterCount) \ |
4428 V(StackLocalCount) \ | 4423 V(StackLocalCount) \ |
4429 V(ContextLocalCount) | 4424 V(ContextLocalCount) |
4430 | 4425 |
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4528 : public BitField<bool, FunctionKindField::kNext, 1> {}; | 4523 : public BitField<bool, FunctionKindField::kNext, 1> {}; |
4529 | 4524 |
4530 // Properties of variables. | 4525 // Properties of variables. |
4531 class VariableModeField : public BitField<VariableMode, 0, 3> {}; | 4526 class VariableModeField : public BitField<VariableMode, 0, 3> {}; |
4532 class InitFlagField : public BitField<InitializationFlag, 3, 1> {}; | 4527 class InitFlagField : public BitField<InitializationFlag, 3, 1> {}; |
4533 class MaybeAssignedFlagField : public BitField<MaybeAssignedFlag, 4, 1> {}; | 4528 class MaybeAssignedFlagField : public BitField<MaybeAssignedFlag, 4, 1> {}; |
4534 | 4529 |
4535 friend class ScopeIterator; | 4530 friend class ScopeIterator; |
4536 }; | 4531 }; |
4537 | 4532 |
4538 class ModuleInfoEntry : public FixedArray { | |
4539 public: | |
4540 DECLARE_CAST(ModuleInfoEntry) | |
4541 static Handle<ModuleInfoEntry> New(Isolate* isolate, | |
4542 Handle<Object> export_name, | |
4543 Handle<Object> local_name, | |
4544 Handle<Object> import_name, | |
4545 Handle<Object> module_request); | |
4546 inline Object* export_name() const; | |
4547 inline Object* local_name() const; | |
4548 inline Object* import_name() const; | |
4549 inline Object* module_request() const; | |
4550 | |
4551 private: | |
4552 friend class Factory; | |
4553 enum { | |
4554 kExportNameIndex, | |
4555 kLocalNameIndex, | |
4556 kImportNameIndex, | |
4557 kModuleRequestIndex, | |
4558 kLength | |
4559 }; | |
4560 }; | |
4561 | |
4562 // ModuleInfo is to ModuleDescriptor what ScopeInfo is to Scope. | 4533 // ModuleInfo is to ModuleDescriptor what ScopeInfo is to Scope. |
4563 class ModuleInfo : public FixedArray { | 4534 class ModuleInfo : public FixedArray { |
4564 public: | 4535 public: |
4565 DECLARE_CAST(ModuleInfo) | 4536 DECLARE_CAST(ModuleInfo) |
4566 static Handle<ModuleInfo> New(Isolate* isolate, ModuleDescriptor* descr); | 4537 static Handle<ModuleInfo> New(Isolate* isolate, ModuleDescriptor* descr); |
4567 inline FixedArray* special_exports() const; | 4538 inline FixedArray* special_exports() const; |
4568 inline FixedArray* regular_exports() const; | 4539 inline FixedArray* regular_exports() const; |
4569 | 4540 |
4570 #ifdef DEBUG | 4541 #ifdef DEBUG |
4571 inline bool Equals(ModuleInfo* other) const; | 4542 inline bool Equals(ModuleInfo* other) const; |
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6359 inline bool CanTransition(); | 6330 inline bool CanTransition(); |
6360 | 6331 |
6361 inline bool IsBooleanMap(); | 6332 inline bool IsBooleanMap(); |
6362 inline bool IsPrimitiveMap(); | 6333 inline bool IsPrimitiveMap(); |
6363 inline bool IsJSReceiverMap(); | 6334 inline bool IsJSReceiverMap(); |
6364 inline bool IsJSObjectMap(); | 6335 inline bool IsJSObjectMap(); |
6365 inline bool IsJSArrayMap(); | 6336 inline bool IsJSArrayMap(); |
6366 inline bool IsJSFunctionMap(); | 6337 inline bool IsJSFunctionMap(); |
6367 inline bool IsStringMap(); | 6338 inline bool IsStringMap(); |
6368 inline bool IsJSProxyMap(); | 6339 inline bool IsJSProxyMap(); |
6369 inline bool IsJSModuleMap(); | |
6370 inline bool IsJSGlobalProxyMap(); | 6340 inline bool IsJSGlobalProxyMap(); |
6371 inline bool IsJSGlobalObjectMap(); | 6341 inline bool IsJSGlobalObjectMap(); |
6372 inline bool IsJSTypedArrayMap(); | 6342 inline bool IsJSTypedArrayMap(); |
6373 inline bool IsJSDataViewMap(); | 6343 inline bool IsJSDataViewMap(); |
6374 | 6344 |
6375 inline bool CanOmitMapChecks(); | 6345 inline bool CanOmitMapChecks(); |
6376 | 6346 |
6377 static void AddDependentCode(Handle<Map> map, | 6347 static void AddDependentCode(Handle<Map> map, |
6378 DependentCode::DependencyGroup group, | 6348 DependentCode::DependencyGroup group, |
6379 Handle<Code> code); | 6349 Handle<Code> code); |
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7837 static const int kInputOrDebugPosOffset = kReceiverOffset + kPointerSize; | 7807 static const int kInputOrDebugPosOffset = kReceiverOffset + kPointerSize; |
7838 static const int kResumeModeOffset = kInputOrDebugPosOffset + kPointerSize; | 7808 static const int kResumeModeOffset = kInputOrDebugPosOffset + kPointerSize; |
7839 static const int kContinuationOffset = kResumeModeOffset + kPointerSize; | 7809 static const int kContinuationOffset = kResumeModeOffset + kPointerSize; |
7840 static const int kOperandStackOffset = kContinuationOffset + kPointerSize; | 7810 static const int kOperandStackOffset = kContinuationOffset + kPointerSize; |
7841 static const int kSize = kOperandStackOffset + kPointerSize; | 7811 static const int kSize = kOperandStackOffset + kPointerSize; |
7842 | 7812 |
7843 private: | 7813 private: |
7844 DISALLOW_IMPLICIT_CONSTRUCTORS(JSGeneratorObject); | 7814 DISALLOW_IMPLICIT_CONSTRUCTORS(JSGeneratorObject); |
7845 }; | 7815 }; |
7846 | 7816 |
7847 // A JSModule object is a mapping from export names to cells | |
7848 // This is still very much in flux. | |
7849 class JSModule : public JSObject { | |
7850 public: | |
7851 DECLARE_CAST(JSModule) | |
7852 DECLARE_VERIFIER(JSModule) | |
7853 | |
7854 static const int kSize = JSObject::kHeaderSize; | |
7855 | |
7856 static void CreateExport(Handle<JSModule> module, Handle<String> name); | |
7857 static void StoreExport(Handle<JSModule> module, Handle<String> name, | |
7858 Handle<Object> value); | |
7859 static Handle<Object> LoadExport(Handle<JSModule> module, | |
7860 Handle<String> name); | |
7861 }; | |
7862 | 7817 |
7863 // JSBoundFunction describes a bound function exotic object. | 7818 // JSBoundFunction describes a bound function exotic object. |
7864 class JSBoundFunction : public JSObject { | 7819 class JSBoundFunction : public JSObject { |
7865 public: | 7820 public: |
7866 // [bound_target_function]: The wrapped function object. | 7821 // [bound_target_function]: The wrapped function object. |
7867 DECL_ACCESSORS(bound_target_function, JSReceiver) | 7822 DECL_ACCESSORS(bound_target_function, JSReceiver) |
7868 | 7823 |
7869 // [bound_this]: The value that is always passed as the this value when | 7824 // [bound_this]: The value that is always passed as the this value when |
7870 // calling the wrapped function. | 7825 // calling the wrapped function. |
7871 DECL_ACCESSORS(bound_this, Object) | 7826 DECL_ACCESSORS(bound_this, Object) |
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11271 } | 11226 } |
11272 return value; | 11227 return value; |
11273 } | 11228 } |
11274 }; | 11229 }; |
11275 | 11230 |
11276 | 11231 |
11277 } // NOLINT, false-positive due to second-order macros. | 11232 } // NOLINT, false-positive due to second-order macros. |
11278 } // NOLINT, false-positive due to second-order macros. | 11233 } // NOLINT, false-positive due to second-order macros. |
11279 | 11234 |
11280 #endif // V8_OBJECTS_H_ | 11235 #endif // V8_OBJECTS_H_ |
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