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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_COMPILER_ACCESS_INFO_H_ | 5 #ifndef V8_COMPILER_ACCESS_INFO_H_ |
| 6 #define V8_COMPILER_ACCESS_INFO_H_ | 6 #define V8_COMPILER_ACCESS_INFO_H_ |
| 7 | 7 |
| 8 #include <iosfwd> | 8 #include <iosfwd> |
| 9 | 9 |
| 10 #include "src/field-index.h" | 10 #include "src/field-index.h" |
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| 55 // This class encapsulates all information required to access a certain | 55 // This class encapsulates all information required to access a certain |
| 56 // object property, either on the object itself or on the prototype chain. | 56 // object property, either on the object itself or on the prototype chain. |
| 57 class PropertyAccessInfo final { | 57 class PropertyAccessInfo final { |
| 58 public: | 58 public: |
| 59 enum Kind { | 59 enum Kind { |
| 60 kInvalid, | 60 kInvalid, |
| 61 kNotFound, | 61 kNotFound, |
| 62 kDataConstant, | 62 kDataConstant, |
| 63 kDataField, | 63 kDataField, |
| 64 kAccessorConstant, | 64 kAccessorConstant, |
| 65 kFunctionPrototype, | |
| 66 kGeneric | 65 kGeneric |
| 67 }; | 66 }; |
| 68 | 67 |
| 69 static PropertyAccessInfo NotFound(MapList const& receiver_maps, | 68 static PropertyAccessInfo NotFound(MapList const& receiver_maps, |
| 70 MaybeHandle<JSObject> holder); | 69 MaybeHandle<JSObject> holder); |
| 71 static PropertyAccessInfo DataConstant(MapList const& receiver_maps, | 70 static PropertyAccessInfo DataConstant(MapList const& receiver_maps, |
| 72 Handle<Object> constant, | 71 Handle<Object> constant, |
| 73 MaybeHandle<JSObject> holder); | 72 MaybeHandle<JSObject> holder); |
| 74 static PropertyAccessInfo DataField( | 73 static PropertyAccessInfo DataField( |
| 75 MapList const& receiver_maps, FieldIndex field_index, | 74 MapList const& receiver_maps, FieldIndex field_index, |
| 76 MachineRepresentation field_representation, Type* field_type, | 75 MachineRepresentation field_representation, Type* field_type, |
| 77 MaybeHandle<Map> field_map = MaybeHandle<Map>(), | 76 MaybeHandle<Map> field_map = MaybeHandle<Map>(), |
| 78 MaybeHandle<JSObject> holder = MaybeHandle<JSObject>(), | 77 MaybeHandle<JSObject> holder = MaybeHandle<JSObject>(), |
| 79 MaybeHandle<Map> transition_map = MaybeHandle<Map>()); | 78 MaybeHandle<Map> transition_map = MaybeHandle<Map>()); |
| 80 static PropertyAccessInfo AccessorConstant(MapList const& receiver_maps, | 79 static PropertyAccessInfo AccessorConstant(MapList const& receiver_maps, |
| 81 Handle<Object> constant, | 80 Handle<Object> constant, |
| 82 MaybeHandle<JSObject> holder); | 81 MaybeHandle<JSObject> holder); |
| 83 static PropertyAccessInfo FunctionPrototype(MapList const& receiver_maps); | |
| 84 static PropertyAccessInfo Generic(MapList const& receiver_maps); | 82 static PropertyAccessInfo Generic(MapList const& receiver_maps); |
| 85 | 83 |
| 86 PropertyAccessInfo(); | 84 PropertyAccessInfo(); |
| 87 | 85 |
| 88 bool Merge(PropertyAccessInfo const* that) WARN_UNUSED_RESULT; | 86 bool Merge(PropertyAccessInfo const* that) WARN_UNUSED_RESULT; |
| 89 | 87 |
| 90 bool IsNotFound() const { return kind() == kNotFound; } | 88 bool IsNotFound() const { return kind() == kNotFound; } |
| 91 bool IsDataConstant() const { return kind() == kDataConstant; } | 89 bool IsDataConstant() const { return kind() == kDataConstant; } |
| 92 bool IsDataField() const { return kind() == kDataField; } | 90 bool IsDataField() const { return kind() == kDataField; } |
| 93 bool IsAccessorConstant() const { return kind() == kAccessorConstant; } | 91 bool IsAccessorConstant() const { return kind() == kAccessorConstant; } |
| 94 bool IsFunctionPrototype() const { return kind() == kFunctionPrototype; } | |
| 95 bool IsGeneric() const { return kind() == kGeneric; } | 92 bool IsGeneric() const { return kind() == kGeneric; } |
| 96 | 93 |
| 97 bool HasTransitionMap() const { return !transition_map().is_null(); } | 94 bool HasTransitionMap() const { return !transition_map().is_null(); } |
| 98 | 95 |
| 99 Kind kind() const { return kind_; } | 96 Kind kind() const { return kind_; } |
| 100 MaybeHandle<JSObject> holder() const { return holder_; } | 97 MaybeHandle<JSObject> holder() const { return holder_; } |
| 101 MaybeHandle<Map> transition_map() const { return transition_map_; } | 98 MaybeHandle<Map> transition_map() const { return transition_map_; } |
| 102 Handle<Object> constant() const { return constant_; } | 99 Handle<Object> constant() const { return constant_; } |
| 103 FieldIndex field_index() const { return field_index_; } | 100 FieldIndex field_index() const { return field_index_; } |
| 104 Type* field_type() const { return field_type_; } | 101 Type* field_type() const { return field_type_; } |
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| 169 Zone* const zone_; | 166 Zone* const zone_; |
| 170 | 167 |
| 171 DISALLOW_COPY_AND_ASSIGN(AccessInfoFactory); | 168 DISALLOW_COPY_AND_ASSIGN(AccessInfoFactory); |
| 172 }; | 169 }; |
| 173 | 170 |
| 174 } // namespace compiler | 171 } // namespace compiler |
| 175 } // namespace internal | 172 } // namespace internal |
| 176 } // namespace v8 | 173 } // namespace v8 |
| 177 | 174 |
| 178 #endif // V8_COMPILER_ACCESS_INFO_H_ | 175 #endif // V8_COMPILER_ACCESS_INFO_H_ |
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