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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_PROPERTY_DETAILS_H_ | 5 #ifndef V8_PROPERTY_DETAILS_H_ |
| 6 #define V8_PROPERTY_DETAILS_H_ | 6 #define V8_PROPERTY_DETAILS_H_ |
| 7 | 7 |
| 8 #include "include/v8.h" | 8 #include "include/v8.h" |
| 9 #include "src/allocation.h" | 9 #include "src/allocation.h" |
| 10 #include "src/utils.h" | 10 #include "src/utils.h" |
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| 225 enum class PropertyCellConstantType { | 225 enum class PropertyCellConstantType { |
| 226 kSmi, | 226 kSmi, |
| 227 kStableMap, | 227 kStableMap, |
| 228 }; | 228 }; |
| 229 | 229 |
| 230 | 230 |
| 231 // PropertyDetails captures type and attributes for a property. | 231 // PropertyDetails captures type and attributes for a property. |
| 232 // They are used both in property dictionaries and instance descriptors. | 232 // They are used both in property dictionaries and instance descriptors. |
| 233 class PropertyDetails BASE_EMBEDDED { | 233 class PropertyDetails BASE_EMBEDDED { |
| 234 public: | 234 public: |
| 235 PropertyDetails(PropertyAttributes attributes, PropertyType type, int index, | 235 // Property details for dictionary mode properties/elements. |
| 236 PropertyDetails(PropertyKind kind, PropertyAttributes attributes, int index, |
| 236 PropertyCellType cell_type) { | 237 PropertyCellType cell_type) { |
| 237 value_ = TypeField::encode(type) | AttributesField::encode(attributes) | | 238 value_ = KindField::encode(kind) | LocationField::encode(kField) | |
| 239 AttributesField::encode(attributes) | |
| 238 DictionaryStorageField::encode(index) | | 240 DictionaryStorageField::encode(index) | |
| 239 PropertyCellTypeField::encode(cell_type); | 241 PropertyCellTypeField::encode(cell_type); |
| 240 | |
| 241 DCHECK(type == this->type()); | |
| 242 DCHECK(attributes == this->attributes()); | |
| 243 } | 242 } |
| 244 | 243 |
| 245 PropertyDetails(PropertyAttributes attributes, | 244 // Property details for fast mode properties. |
| 246 PropertyType type, | |
| 247 Representation representation, | |
| 248 int field_index = 0) { | |
| 249 value_ = TypeField::encode(type) | |
| 250 | AttributesField::encode(attributes) | |
| 251 | RepresentationField::encode(EncodeRepresentation(representation)) | |
| 252 | FieldIndexField::encode(field_index); | |
| 253 } | |
| 254 | |
| 255 PropertyDetails(PropertyKind kind, PropertyAttributes attributes, | 245 PropertyDetails(PropertyKind kind, PropertyAttributes attributes, |
| 256 PropertyLocation location, Representation representation, | 246 PropertyLocation location, Representation representation, |
| 257 int field_index = 0) { | 247 int field_index = 0) { |
| 258 value_ = KindField::encode(kind) | LocationField::encode(location) | | 248 value_ = KindField::encode(kind) | LocationField::encode(location) | |
| 259 AttributesField::encode(attributes) | | 249 AttributesField::encode(attributes) | |
| 260 RepresentationField::encode(EncodeRepresentation(representation)) | | 250 RepresentationField::encode(EncodeRepresentation(representation)) | |
| 261 FieldIndexField::encode(field_index); | 251 FieldIndexField::encode(field_index); |
| 262 } | 252 } |
| 263 | 253 |
| 264 static PropertyDetails Empty( | 254 static PropertyDetails Empty( |
| 265 PropertyCellType cell_type = PropertyCellType::kNoCell) { | 255 PropertyCellType cell_type = PropertyCellType::kNoCell) { |
| 266 return PropertyDetails(NONE, DATA, 0, cell_type); | 256 return PropertyDetails(kData, NONE, 0, cell_type); |
| 267 } | 257 } |
| 268 | 258 |
| 269 int pointer() const { return DescriptorPointer::decode(value_); } | 259 int pointer() const { return DescriptorPointer::decode(value_); } |
| 270 | 260 |
| 271 PropertyDetails set_pointer(int i) const { | 261 PropertyDetails set_pointer(int i) const { |
| 272 return PropertyDetails(value_, i); | 262 return PropertyDetails(value_, i); |
| 273 } | 263 } |
| 274 | 264 |
| 275 PropertyDetails set_cell_type(PropertyCellType type) const { | 265 PropertyDetails set_cell_type(PropertyCellType type) const { |
| 276 PropertyDetails details = *this; | 266 PropertyDetails details = *this; |
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| 403 uint32_t value_; | 393 uint32_t value_; |
| 404 }; | 394 }; |
| 405 | 395 |
| 406 | 396 |
| 407 std::ostream& operator<<(std::ostream& os, | 397 std::ostream& operator<<(std::ostream& os, |
| 408 const PropertyAttributes& attributes); | 398 const PropertyAttributes& attributes); |
| 409 } // namespace internal | 399 } // namespace internal |
| 410 } // namespace v8 | 400 } // namespace v8 |
| 411 | 401 |
| 412 #endif // V8_PROPERTY_DETAILS_H_ | 402 #endif // V8_PROPERTY_DETAILS_H_ |
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