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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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_H_ | 5 #ifndef V8_PROPERTY_H_ |
| 6 #define V8_PROPERTY_H_ | 6 #define V8_PROPERTY_H_ |
| 7 | 7 |
| 8 #include "src/factory.h" | 8 #include "src/factory.h" |
| 9 #include "src/field-index.h" | 9 #include "src/field-index.h" |
| 10 #include "src/field-index-inl.h" | 10 #include "src/field-index-inl.h" |
| (...skipping 107 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 118 next_(isolate->top_lookup_result()), | 118 next_(isolate->top_lookup_result()), |
| 119 lookup_type_(NOT_FOUND), | 119 lookup_type_(NOT_FOUND), |
| 120 holder_(NULL), | 120 holder_(NULL), |
| 121 transition_(NULL), | 121 transition_(NULL), |
| 122 cacheable_(true), | 122 cacheable_(true), |
| 123 details_(NONE, NONEXISTENT, Representation::None()) { | 123 details_(NONE, NONEXISTENT, Representation::None()) { |
| 124 isolate->set_top_lookup_result(this); | 124 isolate->set_top_lookup_result(this); |
| 125 } | 125 } |
| 126 | 126 |
| 127 ~LookupResult() { | 127 ~LookupResult() { |
| 128 ASSERT(isolate()->top_lookup_result() == this); | 128 DCHECK(isolate()->top_lookup_result() == this); |
| 129 isolate()->set_top_lookup_result(next_); | 129 isolate()->set_top_lookup_result(next_); |
| 130 } | 130 } |
| 131 | 131 |
| 132 Isolate* isolate() const { return isolate_; } | 132 Isolate* isolate() const { return isolate_; } |
| 133 | 133 |
| 134 void DescriptorResult(JSObject* holder, PropertyDetails details, int number) { | 134 void DescriptorResult(JSObject* holder, PropertyDetails details, int number) { |
| 135 lookup_type_ = DESCRIPTOR_TYPE; | 135 lookup_type_ = DESCRIPTOR_TYPE; |
| 136 holder_ = holder; | 136 holder_ = holder; |
| 137 transition_ = NULL; | 137 transition_ = NULL; |
| 138 details_ = details; | 138 details_ = details; |
| 139 number_ = number; | 139 number_ = number; |
| 140 } | 140 } |
| 141 | 141 |
| 142 bool CanHoldValue(Handle<Object> value) const { | 142 bool CanHoldValue(Handle<Object> value) const { |
| 143 switch (type()) { | 143 switch (type()) { |
| 144 case NORMAL: | 144 case NORMAL: |
| 145 return true; | 145 return true; |
| 146 case FIELD: | 146 case FIELD: |
| 147 return value->FitsRepresentation(representation()) && | 147 return value->FitsRepresentation(representation()) && |
| 148 GetFieldType()->NowContains(value); | 148 GetFieldType()->NowContains(value); |
| 149 case CONSTANT: | 149 case CONSTANT: |
| 150 ASSERT(GetConstant() != *value || | 150 DCHECK(GetConstant() != *value || |
| 151 value->FitsRepresentation(representation())); | 151 value->FitsRepresentation(representation())); |
| 152 return GetConstant() == *value; | 152 return GetConstant() == *value; |
| 153 case CALLBACKS: | 153 case CALLBACKS: |
| 154 case HANDLER: | 154 case HANDLER: |
| 155 case INTERCEPTOR: | 155 case INTERCEPTOR: |
| 156 return true; | 156 return true; |
| 157 case NONEXISTENT: | 157 case NONEXISTENT: |
| 158 UNREACHABLE(); | 158 UNREACHABLE(); |
| 159 } | 159 } |
| 160 UNREACHABLE(); | 160 UNREACHABLE(); |
| (...skipping 32 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 193 } | 193 } |
| 194 | 194 |
| 195 void NotFound() { | 195 void NotFound() { |
| 196 lookup_type_ = NOT_FOUND; | 196 lookup_type_ = NOT_FOUND; |
| 197 details_ = PropertyDetails(NONE, NONEXISTENT, Representation::None()); | 197 details_ = PropertyDetails(NONE, NONEXISTENT, Representation::None()); |
| 198 holder_ = NULL; | 198 holder_ = NULL; |
| 199 transition_ = NULL; | 199 transition_ = NULL; |
| 200 } | 200 } |
| 201 | 201 |
| 202 JSObject* holder() const { | 202 JSObject* holder() const { |
| 203 ASSERT(IsFound()); | 203 DCHECK(IsFound()); |
| 204 return JSObject::cast(holder_); | 204 return JSObject::cast(holder_); |
| 205 } | 205 } |
| 206 | 206 |
| 207 JSProxy* proxy() const { | 207 JSProxy* proxy() const { |
| 208 ASSERT(IsHandler()); | 208 DCHECK(IsHandler()); |
| 209 return JSProxy::cast(holder_); | 209 return JSProxy::cast(holder_); |
| 210 } | 210 } |
| 211 | 211 |
| 212 PropertyType type() const { | 212 PropertyType type() const { |
| 213 ASSERT(IsFound()); | 213 DCHECK(IsFound()); |
| 214 return details_.type(); | 214 return details_.type(); |
| 215 } | 215 } |
| 216 | 216 |
| 217 Representation representation() const { | 217 Representation representation() const { |
| 218 ASSERT(IsFound()); | 218 DCHECK(IsFound()); |
| 219 ASSERT(details_.type() != NONEXISTENT); | 219 DCHECK(details_.type() != NONEXISTENT); |
| 220 return details_.representation(); | 220 return details_.representation(); |
| 221 } | 221 } |
| 222 | 222 |
| 223 PropertyAttributes GetAttributes() const { | 223 PropertyAttributes GetAttributes() const { |
| 224 ASSERT(IsFound()); | 224 DCHECK(IsFound()); |
| 225 ASSERT(details_.type() != NONEXISTENT); | 225 DCHECK(details_.type() != NONEXISTENT); |
| 226 return details_.attributes(); | 226 return details_.attributes(); |
| 227 } | 227 } |
| 228 | 228 |
| 229 PropertyDetails GetPropertyDetails() const { | 229 PropertyDetails GetPropertyDetails() const { |
| 230 return details_; | 230 return details_; |
| 231 } | 231 } |
| 232 | 232 |
| 233 bool IsFastPropertyType() const { | 233 bool IsFastPropertyType() const { |
| 234 ASSERT(IsFound()); | 234 DCHECK(IsFound()); |
| 235 return IsTransition() || type() != NORMAL; | 235 return IsTransition() || type() != NORMAL; |
| 236 } | 236 } |
| 237 | 237 |
| 238 // Property callbacks does not include transitions to callbacks. | 238 // Property callbacks does not include transitions to callbacks. |
| 239 bool IsPropertyCallbacks() const { | 239 bool IsPropertyCallbacks() const { |
| 240 ASSERT(!(details_.type() == CALLBACKS && !IsFound())); | 240 DCHECK(!(details_.type() == CALLBACKS && !IsFound())); |
| 241 return !IsTransition() && details_.type() == CALLBACKS; | 241 return !IsTransition() && details_.type() == CALLBACKS; |
| 242 } | 242 } |
| 243 | 243 |
| 244 bool IsReadOnly() const { | 244 bool IsReadOnly() const { |
| 245 ASSERT(IsFound()); | 245 DCHECK(IsFound()); |
| 246 ASSERT(details_.type() != NONEXISTENT); | 246 DCHECK(details_.type() != NONEXISTENT); |
| 247 return details_.IsReadOnly(); | 247 return details_.IsReadOnly(); |
| 248 } | 248 } |
| 249 | 249 |
| 250 bool IsField() const { | 250 bool IsField() const { |
| 251 ASSERT(!(details_.type() == FIELD && !IsFound())); | 251 DCHECK(!(details_.type() == FIELD && !IsFound())); |
| 252 return IsDescriptorOrDictionary() && type() == FIELD; | 252 return IsDescriptorOrDictionary() && type() == FIELD; |
| 253 } | 253 } |
| 254 | 254 |
| 255 bool IsNormal() const { | 255 bool IsNormal() const { |
| 256 ASSERT(!(details_.type() == NORMAL && !IsFound())); | 256 DCHECK(!(details_.type() == NORMAL && !IsFound())); |
| 257 return IsDescriptorOrDictionary() && type() == NORMAL; | 257 return IsDescriptorOrDictionary() && type() == NORMAL; |
| 258 } | 258 } |
| 259 | 259 |
| 260 bool IsConstant() const { | 260 bool IsConstant() const { |
| 261 ASSERT(!(details_.type() == CONSTANT && !IsFound())); | 261 DCHECK(!(details_.type() == CONSTANT && !IsFound())); |
| 262 return IsDescriptorOrDictionary() && type() == CONSTANT; | 262 return IsDescriptorOrDictionary() && type() == CONSTANT; |
| 263 } | 263 } |
| 264 | 264 |
| 265 bool IsConstantFunction() const { | 265 bool IsConstantFunction() const { |
| 266 return IsConstant() && GetConstant()->IsJSFunction(); | 266 return IsConstant() && GetConstant()->IsJSFunction(); |
| 267 } | 267 } |
| 268 | 268 |
| 269 bool IsDontDelete() const { return details_.IsDontDelete(); } | 269 bool IsDontDelete() const { return details_.IsDontDelete(); } |
| 270 bool IsDontEnum() const { return details_.IsDontEnum(); } | 270 bool IsDontEnum() const { return details_.IsDontEnum(); } |
| 271 bool IsFound() const { return lookup_type_ != NOT_FOUND; } | 271 bool IsFound() const { return lookup_type_ != NOT_FOUND; } |
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| 291 | 291 |
| 292 case DESCRIPTOR_TYPE: | 292 case DESCRIPTOR_TYPE: |
| 293 case DICTIONARY_TYPE: | 293 case DICTIONARY_TYPE: |
| 294 switch (type()) { | 294 switch (type()) { |
| 295 case FIELD: | 295 case FIELD: |
| 296 case NORMAL: | 296 case NORMAL: |
| 297 case CONSTANT: | 297 case CONSTANT: |
| 298 return true; | 298 return true; |
| 299 case CALLBACKS: { | 299 case CALLBACKS: { |
| 300 Object* callback = GetCallbackObject(); | 300 Object* callback = GetCallbackObject(); |
| 301 ASSERT(!callback->IsForeign()); | 301 DCHECK(!callback->IsForeign()); |
| 302 return callback->IsAccessorInfo(); | 302 return callback->IsAccessorInfo(); |
| 303 } | 303 } |
| 304 case HANDLER: | 304 case HANDLER: |
| 305 case INTERCEPTOR: | 305 case INTERCEPTOR: |
| 306 case NONEXISTENT: | 306 case NONEXISTENT: |
| 307 UNREACHABLE(); | 307 UNREACHABLE(); |
| 308 return false; | 308 return false; |
| 309 } | 309 } |
| 310 } | 310 } |
| 311 UNREACHABLE(); | 311 UNREACHABLE(); |
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| 345 case NONEXISTENT: | 345 case NONEXISTENT: |
| 346 UNREACHABLE(); | 346 UNREACHABLE(); |
| 347 return NULL; | 347 return NULL; |
| 348 } | 348 } |
| 349 } | 349 } |
| 350 UNREACHABLE(); | 350 UNREACHABLE(); |
| 351 return NULL; | 351 return NULL; |
| 352 } | 352 } |
| 353 | 353 |
| 354 Map* GetTransitionTarget() const { | 354 Map* GetTransitionTarget() const { |
| 355 ASSERT(IsTransition()); | 355 DCHECK(IsTransition()); |
| 356 return transition_; | 356 return transition_; |
| 357 } | 357 } |
| 358 | 358 |
| 359 bool IsTransitionToField() const { | 359 bool IsTransitionToField() const { |
| 360 return IsTransition() && details_.type() == FIELD; | 360 return IsTransition() && details_.type() == FIELD; |
| 361 } | 361 } |
| 362 | 362 |
| 363 bool IsTransitionToConstant() const { | 363 bool IsTransitionToConstant() const { |
| 364 return IsTransition() && details_.type() == CONSTANT; | 364 return IsTransition() && details_.type() == CONSTANT; |
| 365 } | 365 } |
| 366 | 366 |
| 367 int GetDescriptorIndex() const { | 367 int GetDescriptorIndex() const { |
| 368 ASSERT(lookup_type_ == DESCRIPTOR_TYPE); | 368 DCHECK(lookup_type_ == DESCRIPTOR_TYPE); |
| 369 return number_; | 369 return number_; |
| 370 } | 370 } |
| 371 | 371 |
| 372 FieldIndex GetFieldIndex() const { | 372 FieldIndex GetFieldIndex() const { |
| 373 ASSERT(lookup_type_ == DESCRIPTOR_TYPE || | 373 DCHECK(lookup_type_ == DESCRIPTOR_TYPE || |
| 374 lookup_type_ == TRANSITION_TYPE); | 374 lookup_type_ == TRANSITION_TYPE); |
| 375 return FieldIndex::ForLookupResult(this); | 375 return FieldIndex::ForLookupResult(this); |
| 376 } | 376 } |
| 377 | 377 |
| 378 int GetLocalFieldIndexFromMap(Map* map) const { | 378 int GetLocalFieldIndexFromMap(Map* map) const { |
| 379 return GetFieldIndexFromMap(map) - map->inobject_properties(); | 379 return GetFieldIndexFromMap(map) - map->inobject_properties(); |
| 380 } | 380 } |
| 381 | 381 |
| 382 int GetDictionaryEntry() const { | 382 int GetDictionaryEntry() const { |
| 383 ASSERT(lookup_type_ == DICTIONARY_TYPE); | 383 DCHECK(lookup_type_ == DICTIONARY_TYPE); |
| 384 return number_; | 384 return number_; |
| 385 } | 385 } |
| 386 | 386 |
| 387 JSFunction* GetConstantFunction() const { | 387 JSFunction* GetConstantFunction() const { |
| 388 ASSERT(type() == CONSTANT); | 388 DCHECK(type() == CONSTANT); |
| 389 return JSFunction::cast(GetValue()); | 389 return JSFunction::cast(GetValue()); |
| 390 } | 390 } |
| 391 | 391 |
| 392 Object* GetConstantFromMap(Map* map) const { | 392 Object* GetConstantFromMap(Map* map) const { |
| 393 ASSERT(type() == CONSTANT); | 393 DCHECK(type() == CONSTANT); |
| 394 return GetValueFromMap(map); | 394 return GetValueFromMap(map); |
| 395 } | 395 } |
| 396 | 396 |
| 397 JSFunction* GetConstantFunctionFromMap(Map* map) const { | 397 JSFunction* GetConstantFunctionFromMap(Map* map) const { |
| 398 return JSFunction::cast(GetConstantFromMap(map)); | 398 return JSFunction::cast(GetConstantFromMap(map)); |
| 399 } | 399 } |
| 400 | 400 |
| 401 Object* GetConstant() const { | 401 Object* GetConstant() const { |
| 402 ASSERT(type() == CONSTANT); | 402 DCHECK(type() == CONSTANT); |
| 403 return GetValue(); | 403 return GetValue(); |
| 404 } | 404 } |
| 405 | 405 |
| 406 Object* GetCallbackObject() const { | 406 Object* GetCallbackObject() const { |
| 407 ASSERT(!IsTransition()); | 407 DCHECK(!IsTransition()); |
| 408 ASSERT(type() == CALLBACKS); | 408 DCHECK(type() == CALLBACKS); |
| 409 return GetValue(); | 409 return GetValue(); |
| 410 } | 410 } |
| 411 | 411 |
| 412 Object* GetValue() const { | 412 Object* GetValue() const { |
| 413 if (lookup_type_ == DESCRIPTOR_TYPE) { | 413 if (lookup_type_ == DESCRIPTOR_TYPE) { |
| 414 return GetValueFromMap(holder()->map()); | 414 return GetValueFromMap(holder()->map()); |
| 415 } else if (lookup_type_ == TRANSITION_TYPE) { | 415 } else if (lookup_type_ == TRANSITION_TYPE) { |
| 416 return GetValueFromMap(transition_); | 416 return GetValueFromMap(transition_); |
| 417 } | 417 } |
| 418 // In the dictionary case, the data is held in the value field. | 418 // In the dictionary case, the data is held in the value field. |
| 419 ASSERT(lookup_type_ == DICTIONARY_TYPE); | 419 DCHECK(lookup_type_ == DICTIONARY_TYPE); |
| 420 return holder()->GetNormalizedProperty(this); | 420 return holder()->GetNormalizedProperty(this); |
| 421 } | 421 } |
| 422 | 422 |
| 423 Object* GetValueFromMap(Map* map) const { | 423 Object* GetValueFromMap(Map* map) const { |
| 424 ASSERT(lookup_type_ == DESCRIPTOR_TYPE || | 424 DCHECK(lookup_type_ == DESCRIPTOR_TYPE || |
| 425 lookup_type_ == TRANSITION_TYPE); | 425 lookup_type_ == TRANSITION_TYPE); |
| 426 ASSERT(number_ < map->NumberOfOwnDescriptors()); | 426 DCHECK(number_ < map->NumberOfOwnDescriptors()); |
| 427 return map->instance_descriptors()->GetValue(number_); | 427 return map->instance_descriptors()->GetValue(number_); |
| 428 } | 428 } |
| 429 | 429 |
| 430 int GetFieldIndexFromMap(Map* map) const { | 430 int GetFieldIndexFromMap(Map* map) const { |
| 431 ASSERT(lookup_type_ == DESCRIPTOR_TYPE || | 431 DCHECK(lookup_type_ == DESCRIPTOR_TYPE || |
| 432 lookup_type_ == TRANSITION_TYPE); | 432 lookup_type_ == TRANSITION_TYPE); |
| 433 ASSERT(number_ < map->NumberOfOwnDescriptors()); | 433 DCHECK(number_ < map->NumberOfOwnDescriptors()); |
| 434 return map->instance_descriptors()->GetFieldIndex(number_); | 434 return map->instance_descriptors()->GetFieldIndex(number_); |
| 435 } | 435 } |
| 436 | 436 |
| 437 HeapType* GetFieldType() const { | 437 HeapType* GetFieldType() const { |
| 438 ASSERT(type() == FIELD); | 438 DCHECK(type() == FIELD); |
| 439 if (lookup_type_ == DESCRIPTOR_TYPE) { | 439 if (lookup_type_ == DESCRIPTOR_TYPE) { |
| 440 return GetFieldTypeFromMap(holder()->map()); | 440 return GetFieldTypeFromMap(holder()->map()); |
| 441 } | 441 } |
| 442 ASSERT(lookup_type_ == TRANSITION_TYPE); | 442 DCHECK(lookup_type_ == TRANSITION_TYPE); |
| 443 return GetFieldTypeFromMap(transition_); | 443 return GetFieldTypeFromMap(transition_); |
| 444 } | 444 } |
| 445 | 445 |
| 446 HeapType* GetFieldTypeFromMap(Map* map) const { | 446 HeapType* GetFieldTypeFromMap(Map* map) const { |
| 447 ASSERT(lookup_type_ == DESCRIPTOR_TYPE || | 447 DCHECK(lookup_type_ == DESCRIPTOR_TYPE || |
| 448 lookup_type_ == TRANSITION_TYPE); | 448 lookup_type_ == TRANSITION_TYPE); |
| 449 ASSERT(number_ < map->NumberOfOwnDescriptors()); | 449 DCHECK(number_ < map->NumberOfOwnDescriptors()); |
| 450 return map->instance_descriptors()->GetFieldType(number_); | 450 return map->instance_descriptors()->GetFieldType(number_); |
| 451 } | 451 } |
| 452 | 452 |
| 453 Map* GetFieldOwner() const { | 453 Map* GetFieldOwner() const { |
| 454 return GetFieldOwnerFromMap(holder()->map()); | 454 return GetFieldOwnerFromMap(holder()->map()); |
| 455 } | 455 } |
| 456 | 456 |
| 457 Map* GetFieldOwnerFromMap(Map* map) const { | 457 Map* GetFieldOwnerFromMap(Map* map) const { |
| 458 ASSERT(lookup_type_ == DESCRIPTOR_TYPE || | 458 DCHECK(lookup_type_ == DESCRIPTOR_TYPE || |
| 459 lookup_type_ == TRANSITION_TYPE); | 459 lookup_type_ == TRANSITION_TYPE); |
| 460 ASSERT(number_ < map->NumberOfOwnDescriptors()); | 460 DCHECK(number_ < map->NumberOfOwnDescriptors()); |
| 461 return map->FindFieldOwner(number_); | 461 return map->FindFieldOwner(number_); |
| 462 } | 462 } |
| 463 | 463 |
| 464 bool ReceiverIsHolder(Handle<Object> receiver) { | 464 bool ReceiverIsHolder(Handle<Object> receiver) { |
| 465 if (*receiver == holder()) return true; | 465 if (*receiver == holder()) return true; |
| 466 if (lookup_type_ == TRANSITION_TYPE) return true; | 466 if (lookup_type_ == TRANSITION_TYPE) return true; |
| 467 return false; | 467 return false; |
| 468 } | 468 } |
| 469 | 469 |
| 470 void Iterate(ObjectVisitor* visitor); | 470 void Iterate(ObjectVisitor* visitor); |
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| 488 int number_; | 488 int number_; |
| 489 bool cacheable_; | 489 bool cacheable_; |
| 490 PropertyDetails details_; | 490 PropertyDetails details_; |
| 491 }; | 491 }; |
| 492 | 492 |
| 493 | 493 |
| 494 OStream& operator<<(OStream& os, const LookupResult& r); | 494 OStream& operator<<(OStream& os, const LookupResult& r); |
| 495 } } // namespace v8::internal | 495 } } // namespace v8::internal |
| 496 | 496 |
| 497 #endif // V8_PROPERTY_H_ | 497 #endif // V8_PROPERTY_H_ |
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