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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_CONTEXTS_H_ | 5 #ifndef V8_CONTEXTS_H_ |
6 #define V8_CONTEXTS_H_ | 6 #define V8_CONTEXTS_H_ |
7 | 7 |
8 #include "src/heap/heap.h" | 8 #include "src/heap/heap.h" |
9 #include "src/objects.h" | 9 #include "src/objects.h" |
10 | 10 |
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115 V(INT16_ARRAY_EXTERNAL_MAP_INDEX, Map, int16_array_external_map) \ | 115 V(INT16_ARRAY_EXTERNAL_MAP_INDEX, Map, int16_array_external_map) \ |
116 V(UINT16_ARRAY_EXTERNAL_MAP_INDEX, Map, uint16_array_external_map) \ | 116 V(UINT16_ARRAY_EXTERNAL_MAP_INDEX, Map, uint16_array_external_map) \ |
117 V(INT32_ARRAY_EXTERNAL_MAP_INDEX, Map, int32_array_external_map) \ | 117 V(INT32_ARRAY_EXTERNAL_MAP_INDEX, Map, int32_array_external_map) \ |
118 V(UINT32_ARRAY_EXTERNAL_MAP_INDEX, Map, uint32_array_external_map) \ | 118 V(UINT32_ARRAY_EXTERNAL_MAP_INDEX, Map, uint32_array_external_map) \ |
119 V(FLOAT32_ARRAY_EXTERNAL_MAP_INDEX, Map, float32_array_external_map) \ | 119 V(FLOAT32_ARRAY_EXTERNAL_MAP_INDEX, Map, float32_array_external_map) \ |
120 V(FLOAT64_ARRAY_EXTERNAL_MAP_INDEX, Map, float64_array_external_map) \ | 120 V(FLOAT64_ARRAY_EXTERNAL_MAP_INDEX, Map, float64_array_external_map) \ |
121 V(UINT8_CLAMPED_ARRAY_EXTERNAL_MAP_INDEX, Map, \ | 121 V(UINT8_CLAMPED_ARRAY_EXTERNAL_MAP_INDEX, Map, \ |
122 uint8_clamped_array_external_map) \ | 122 uint8_clamped_array_external_map) \ |
123 V(DATA_VIEW_FUN_INDEX, JSFunction, data_view_fun) \ | 123 V(DATA_VIEW_FUN_INDEX, JSFunction, data_view_fun) \ |
124 V(SLOPPY_FUNCTION_MAP_INDEX, Map, sloppy_function_map) \ | 124 V(SLOPPY_FUNCTION_MAP_INDEX, Map, sloppy_function_map) \ |
| 125 V(PLAIN_FUNCTION_MAP_INDEX, Map, plain_function_map) \ |
125 V(SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX, Map, \ | 126 V(SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX, Map, \ |
126 sloppy_function_with_readonly_prototype_map) \ | 127 sloppy_function_with_readonly_prototype_map) \ |
127 V(STRICT_FUNCTION_MAP_INDEX, Map, strict_function_map) \ | 128 V(STRICT_FUNCTION_MAP_INDEX, Map, strict_function_map) \ |
128 V(STRONG_FUNCTION_MAP_INDEX, Map, strong_function_map) \ | 129 V(STRONG_FUNCTION_MAP_INDEX, Map, strong_function_map) \ |
129 V(SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, Map, \ | 130 V(SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, Map, \ |
130 sloppy_function_without_prototype_map) \ | 131 sloppy_function_without_prototype_map) \ |
| 132 V(PLAIN_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, Map, \ |
| 133 plain_function_without_prototype_map) \ |
131 V(STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, Map, \ | 134 V(STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, Map, \ |
132 strict_function_without_prototype_map) \ | 135 strict_function_without_prototype_map) \ |
133 V(STRONG_CONSTRUCTOR_MAP_INDEX, Map, strong_constructor_map) \ | 136 V(STRONG_CONSTRUCTOR_MAP_INDEX, Map, strong_constructor_map) \ |
134 V(BOUND_FUNCTION_MAP_INDEX, Map, bound_function_map) \ | 137 V(BOUND_FUNCTION_MAP_INDEX, Map, bound_function_map) \ |
135 V(REGEXP_RESULT_MAP_INDEX, Map, regexp_result_map) \ | 138 V(REGEXP_RESULT_MAP_INDEX, Map, regexp_result_map) \ |
136 V(SLOPPY_ARGUMENTS_MAP_INDEX, Map, sloppy_arguments_map) \ | 139 V(SLOPPY_ARGUMENTS_MAP_INDEX, Map, sloppy_arguments_map) \ |
137 V(ALIASED_ARGUMENTS_MAP_INDEX, Map, aliased_arguments_map) \ | 140 V(ALIASED_ARGUMENTS_MAP_INDEX, Map, aliased_arguments_map) \ |
138 V(STRICT_ARGUMENTS_MAP_INDEX, Map, strict_arguments_map) \ | 141 V(STRICT_ARGUMENTS_MAP_INDEX, Map, strict_arguments_map) \ |
139 V(MESSAGE_LISTENERS_INDEX, JSObject, message_listeners) \ | 142 V(MESSAGE_LISTENERS_INDEX, JSObject, message_listeners) \ |
140 V(MAKE_MESSAGE_FUN_INDEX, JSFunction, make_message_fun) \ | 143 V(MAKE_MESSAGE_FUN_INDEX, JSFunction, make_message_fun) \ |
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169 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \ | 172 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \ |
170 V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate) \ | 173 V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate) \ |
171 V(OBSERVERS_NOTIFY_CHANGE_INDEX, JSFunction, observers_notify_change) \ | 174 V(OBSERVERS_NOTIFY_CHANGE_INDEX, JSFunction, observers_notify_change) \ |
172 V(OBSERVERS_ENQUEUE_SPLICE_INDEX, JSFunction, observers_enqueue_splice) \ | 175 V(OBSERVERS_ENQUEUE_SPLICE_INDEX, JSFunction, observers_enqueue_splice) \ |
173 V(OBSERVERS_BEGIN_SPLICE_INDEX, JSFunction, observers_begin_perform_splice) \ | 176 V(OBSERVERS_BEGIN_SPLICE_INDEX, JSFunction, observers_begin_perform_splice) \ |
174 V(OBSERVERS_END_SPLICE_INDEX, JSFunction, observers_end_perform_splice) \ | 177 V(OBSERVERS_END_SPLICE_INDEX, JSFunction, observers_end_perform_splice) \ |
175 V(NATIVE_OBJECT_OBSERVE_INDEX, JSFunction, native_object_observe) \ | 178 V(NATIVE_OBJECT_OBSERVE_INDEX, JSFunction, native_object_observe) \ |
176 V(NATIVE_OBJECT_GET_NOTIFIER_INDEX, JSFunction, native_object_get_notifier) \ | 179 V(NATIVE_OBJECT_GET_NOTIFIER_INDEX, JSFunction, native_object_get_notifier) \ |
177 V(NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE, JSFunction, \ | 180 V(NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE, JSFunction, \ |
178 native_object_notifier_perform_change) \ | 181 native_object_notifier_perform_change) \ |
179 V(SLOPPY_GENERATOR_FUNCTION_MAP_INDEX, Map, sloppy_generator_function_map) \ | 182 V(GENERATOR_FUNCTION_MAP_INDEX, Map, generator_function_map) \ |
180 V(STRICT_GENERATOR_FUNCTION_MAP_INDEX, Map, strict_generator_function_map) \ | |
181 V(STRONG_GENERATOR_FUNCTION_MAP_INDEX, Map, strong_generator_function_map) \ | 183 V(STRONG_GENERATOR_FUNCTION_MAP_INDEX, Map, strong_generator_function_map) \ |
182 V(GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX, Map, generator_object_prototype_map) \ | 184 V(GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX, Map, generator_object_prototype_map) \ |
183 V(ITERATOR_RESULT_MAP_INDEX, Map, iterator_result_map) \ | 185 V(ITERATOR_RESULT_MAP_INDEX, Map, iterator_result_map) \ |
184 V(MAP_ITERATOR_MAP_INDEX, Map, map_iterator_map) \ | 186 V(MAP_ITERATOR_MAP_INDEX, Map, map_iterator_map) \ |
185 V(SET_ITERATOR_MAP_INDEX, Map, set_iterator_map) \ | 187 V(SET_ITERATOR_MAP_INDEX, Map, set_iterator_map) \ |
186 V(ARRAY_VALUES_ITERATOR_INDEX, JSFunction, array_values_iterator) \ | 188 V(ARRAY_VALUES_ITERATOR_INDEX, JSFunction, array_values_iterator) \ |
187 V(SCRIPT_CONTEXT_TABLE_INDEX, ScriptContextTable, script_context_table) | 189 V(SCRIPT_CONTEXT_TABLE_INDEX, ScriptContextTable, script_context_table) |
188 | 190 |
189 | 191 |
190 // A table of all script contexts. Every loaded top-level script with top-level | 192 // A table of all script contexts. Every loaded top-level script with top-level |
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313 THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS, | 315 THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS, |
314 | 316 |
315 // These slots are only in native contexts. | 317 // These slots are only in native contexts. |
316 GLOBAL_PROXY_INDEX = MIN_CONTEXT_SLOTS, | 318 GLOBAL_PROXY_INDEX = MIN_CONTEXT_SLOTS, |
317 SECURITY_TOKEN_INDEX, | 319 SECURITY_TOKEN_INDEX, |
318 SLOPPY_ARGUMENTS_MAP_INDEX, | 320 SLOPPY_ARGUMENTS_MAP_INDEX, |
319 ALIASED_ARGUMENTS_MAP_INDEX, | 321 ALIASED_ARGUMENTS_MAP_INDEX, |
320 STRICT_ARGUMENTS_MAP_INDEX, | 322 STRICT_ARGUMENTS_MAP_INDEX, |
321 REGEXP_RESULT_MAP_INDEX, | 323 REGEXP_RESULT_MAP_INDEX, |
322 SLOPPY_FUNCTION_MAP_INDEX, | 324 SLOPPY_FUNCTION_MAP_INDEX, |
| 325 PLAIN_FUNCTION_MAP_INDEX, |
323 SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX, | 326 SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX, |
324 STRICT_FUNCTION_MAP_INDEX, | 327 STRICT_FUNCTION_MAP_INDEX, |
325 STRONG_FUNCTION_MAP_INDEX, | 328 STRONG_FUNCTION_MAP_INDEX, |
326 SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, | 329 SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, |
| 330 PLAIN_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, |
327 STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, | 331 STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, |
328 STRONG_CONSTRUCTOR_MAP_INDEX, | 332 STRONG_CONSTRUCTOR_MAP_INDEX, |
329 BOUND_FUNCTION_MAP_INDEX, | 333 BOUND_FUNCTION_MAP_INDEX, |
330 INITIAL_OBJECT_PROTOTYPE_INDEX, | 334 INITIAL_OBJECT_PROTOTYPE_INDEX, |
331 INITIAL_ARRAY_PROTOTYPE_INDEX, | 335 INITIAL_ARRAY_PROTOTYPE_INDEX, |
332 BOOLEAN_FUNCTION_INDEX, | 336 BOOLEAN_FUNCTION_INDEX, |
333 NUMBER_FUNCTION_INDEX, | 337 NUMBER_FUNCTION_INDEX, |
334 STRING_FUNCTION_INDEX, | 338 STRING_FUNCTION_INDEX, |
335 STRING_FUNCTION_PROTOTYPE_MAP_INDEX, | 339 STRING_FUNCTION_PROTOTYPE_MAP_INDEX, |
336 SYMBOL_FUNCTION_INDEX, | 340 SYMBOL_FUNCTION_INDEX, |
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402 DERIVED_GET_TRAP_INDEX, | 406 DERIVED_GET_TRAP_INDEX, |
403 DERIVED_SET_TRAP_INDEX, | 407 DERIVED_SET_TRAP_INDEX, |
404 PROXY_ENUMERATE_INDEX, | 408 PROXY_ENUMERATE_INDEX, |
405 OBSERVERS_NOTIFY_CHANGE_INDEX, | 409 OBSERVERS_NOTIFY_CHANGE_INDEX, |
406 OBSERVERS_ENQUEUE_SPLICE_INDEX, | 410 OBSERVERS_ENQUEUE_SPLICE_INDEX, |
407 OBSERVERS_BEGIN_SPLICE_INDEX, | 411 OBSERVERS_BEGIN_SPLICE_INDEX, |
408 OBSERVERS_END_SPLICE_INDEX, | 412 OBSERVERS_END_SPLICE_INDEX, |
409 NATIVE_OBJECT_OBSERVE_INDEX, | 413 NATIVE_OBJECT_OBSERVE_INDEX, |
410 NATIVE_OBJECT_GET_NOTIFIER_INDEX, | 414 NATIVE_OBJECT_GET_NOTIFIER_INDEX, |
411 NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE, | 415 NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE, |
412 SLOPPY_GENERATOR_FUNCTION_MAP_INDEX, | 416 GENERATOR_FUNCTION_MAP_INDEX, |
413 STRICT_GENERATOR_FUNCTION_MAP_INDEX, | |
414 STRONG_GENERATOR_FUNCTION_MAP_INDEX, | 417 STRONG_GENERATOR_FUNCTION_MAP_INDEX, |
415 GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX, | 418 GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX, |
416 ITERATOR_RESULT_MAP_INDEX, | 419 ITERATOR_RESULT_MAP_INDEX, |
417 MAP_ITERATOR_MAP_INDEX, | 420 MAP_ITERATOR_MAP_INDEX, |
418 SET_ITERATOR_MAP_INDEX, | 421 SET_ITERATOR_MAP_INDEX, |
419 ARRAY_VALUES_ITERATOR_INDEX, | 422 ARRAY_VALUES_ITERATOR_INDEX, |
420 SCRIPT_CONTEXT_TABLE_INDEX, | 423 SCRIPT_CONTEXT_TABLE_INDEX, |
421 MAP_CACHE_INDEX, | 424 MAP_CACHE_INDEX, |
422 TO_LENGTH_FUN_INDEX, | 425 TO_LENGTH_FUN_INDEX, |
423 | 426 |
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569 PropertyAttributes* attributes, | 572 PropertyAttributes* attributes, |
570 BindingFlags* binding_flags); | 573 BindingFlags* binding_flags); |
571 | 574 |
572 // Code generation support. | 575 // Code generation support. |
573 static int SlotOffset(int index) { | 576 static int SlotOffset(int index) { |
574 return kHeaderSize + index * kPointerSize - kHeapObjectTag; | 577 return kHeaderSize + index * kPointerSize - kHeapObjectTag; |
575 } | 578 } |
576 | 579 |
577 static int FunctionMapIndex(LanguageMode language_mode, FunctionKind kind) { | 580 static int FunctionMapIndex(LanguageMode language_mode, FunctionKind kind) { |
578 if (IsGeneratorFunction(kind)) { | 581 if (IsGeneratorFunction(kind)) { |
579 return is_strong(language_mode) ? STRONG_GENERATOR_FUNCTION_MAP_INDEX : | 582 return is_strong(language_mode) ? STRONG_GENERATOR_FUNCTION_MAP_INDEX |
580 is_strict(language_mode) ? STRICT_GENERATOR_FUNCTION_MAP_INDEX | 583 : GENERATOR_FUNCTION_MAP_INDEX; |
581 : SLOPPY_GENERATOR_FUNCTION_MAP_INDEX; | |
582 } | 584 } |
583 | 585 |
584 if (IsConstructor(kind)) { | 586 if (IsConstructor(kind)) { |
585 return is_strong(language_mode) ? STRONG_CONSTRUCTOR_MAP_INDEX : | 587 return is_strong(language_mode) ? STRONG_CONSTRUCTOR_MAP_INDEX |
586 is_strict(language_mode) ? STRICT_FUNCTION_MAP_INDEX | 588 : PLAIN_FUNCTION_MAP_INDEX; |
587 : SLOPPY_FUNCTION_MAP_INDEX; | |
588 } | 589 } |
589 | 590 |
590 if (IsArrowFunction(kind) || IsConciseMethod(kind) || | 591 if (IsArrowFunction(kind) || IsConciseMethod(kind)) { |
591 IsAccessorFunction(kind)) { | 592 return is_strong(language_mode) |
| 593 ? STRONG_FUNCTION_MAP_INDEX |
| 594 : PLAIN_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX; |
| 595 } |
| 596 |
| 597 if (IsAccessorFunction(kind)) { |
592 return is_strong(language_mode) ? STRONG_FUNCTION_MAP_INDEX : | 598 return is_strong(language_mode) ? STRONG_FUNCTION_MAP_INDEX : |
593 is_strict(language_mode) ? | 599 is_strict(language_mode) ? |
594 STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX : | 600 STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX : |
595 SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX; | 601 SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX; |
596 } | 602 } |
597 | 603 |
598 return is_strong(language_mode) ? STRONG_FUNCTION_MAP_INDEX : | 604 return is_strong(language_mode) ? STRONG_FUNCTION_MAP_INDEX : |
599 is_strict(language_mode) ? STRICT_FUNCTION_MAP_INDEX | 605 is_strict(language_mode) ? STRICT_FUNCTION_MAP_INDEX |
600 : SLOPPY_FUNCTION_MAP_INDEX; | 606 : SLOPPY_FUNCTION_MAP_INDEX; |
601 } | 607 } |
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621 static bool IsBootstrappingOrGlobalObject(Isolate* isolate, Object* object); | 627 static bool IsBootstrappingOrGlobalObject(Isolate* isolate, Object* object); |
622 #endif | 628 #endif |
623 | 629 |
624 STATIC_ASSERT(kHeaderSize == Internals::kContextHeaderSize); | 630 STATIC_ASSERT(kHeaderSize == Internals::kContextHeaderSize); |
625 STATIC_ASSERT(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex); | 631 STATIC_ASSERT(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex); |
626 }; | 632 }; |
627 | 633 |
628 } } // namespace v8::internal | 634 } } // namespace v8::internal |
629 | 635 |
630 #endif // V8_CONTEXTS_H_ | 636 #endif // V8_CONTEXTS_H_ |
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