1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 #include "v8.h"
29
30 #include "api.h"
31 #include "debug.h"
32 #include "execution.h"
33 #include "factory.h"
34 #include "isolate-inl.h"
35 #include "macro-assembler.h"
36 #include "objects.h"
37 #include "objects-visiting.h"
38 #include "platform.h"
39 #include "scopeinfo.h"
40
41 namespace v8 {
42 namespace internal {
43
44
NewBox(Handle<Object> value,PretenureFlag pretenure)45 Handle<Box> Factory::NewBox(Handle<Object> value, PretenureFlag pretenure) {
46 CALL_HEAP_FUNCTION(
47 isolate(),
48 isolate()->heap()->AllocateBox(*value, pretenure),
49 Box);
50 }
51
52
NewFixedArray(int size,PretenureFlag pretenure)53 Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) {
54 ASSERT(0 <= size);
55 CALL_HEAP_FUNCTION(
56 isolate(),
57 isolate()->heap()->AllocateFixedArray(size, pretenure),
58 FixedArray);
59 }
60
61
NewFixedArrayWithHoles(int size,PretenureFlag pretenure)62 Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size,
63 PretenureFlag pretenure) {
64 ASSERT(0 <= size);
65 CALL_HEAP_FUNCTION(
66 isolate(),
67 isolate()->heap()->AllocateFixedArrayWithHoles(size, pretenure),
68 FixedArray);
69 }
70
71
NewFixedDoubleArray(int size,PretenureFlag pretenure)72 Handle<FixedDoubleArray> Factory::NewFixedDoubleArray(int size,
73 PretenureFlag pretenure) {
74 ASSERT(0 <= size);
75 CALL_HEAP_FUNCTION(
76 isolate(),
77 isolate()->heap()->AllocateUninitializedFixedDoubleArray(size, pretenure),
78 FixedDoubleArray);
79 }
80
81
NewConstantPoolArray(int number_of_int64_entries,int number_of_ptr_entries,int number_of_int32_entries)82 Handle<ConstantPoolArray> Factory::NewConstantPoolArray(
83 int number_of_int64_entries,
84 int number_of_ptr_entries,
85 int number_of_int32_entries) {
86 ASSERT(number_of_int64_entries > 0 || number_of_ptr_entries > 0 ||
87 number_of_int32_entries > 0);
88 CALL_HEAP_FUNCTION(
89 isolate(),
90 isolate()->heap()->AllocateConstantPoolArray(number_of_int64_entries,
91 number_of_ptr_entries,
92 number_of_int32_entries),
93 ConstantPoolArray);
94 }
95
96
NewNameDictionary(int at_least_space_for)97 Handle<NameDictionary> Factory::NewNameDictionary(int at_least_space_for) {
98 ASSERT(0 <= at_least_space_for);
99 CALL_HEAP_FUNCTION(isolate(),
100 NameDictionary::Allocate(isolate()->heap(),
101 at_least_space_for),
102 NameDictionary);
103 }
104
105
NewSeededNumberDictionary(int at_least_space_for)106 Handle<SeededNumberDictionary> Factory::NewSeededNumberDictionary(
107 int at_least_space_for) {
108 ASSERT(0 <= at_least_space_for);
109 CALL_HEAP_FUNCTION(isolate(),
110 SeededNumberDictionary::Allocate(isolate()->heap(),
111 at_least_space_for),
112 SeededNumberDictionary);
113 }
114
115
NewUnseededNumberDictionary(int at_least_space_for)116 Handle<UnseededNumberDictionary> Factory::NewUnseededNumberDictionary(
117 int at_least_space_for) {
118 ASSERT(0 <= at_least_space_for);
119 CALL_HEAP_FUNCTION(isolate(),
120 UnseededNumberDictionary::Allocate(isolate()->heap(),
121 at_least_space_for),
122 UnseededNumberDictionary);
123 }
124
125
NewObjectHashSet(int at_least_space_for)126 Handle<ObjectHashSet> Factory::NewObjectHashSet(int at_least_space_for) {
127 ASSERT(0 <= at_least_space_for);
128 CALL_HEAP_FUNCTION(isolate(),
129 ObjectHashSet::Allocate(isolate()->heap(),
130 at_least_space_for),
131 ObjectHashSet);
132 }
133
134
NewObjectHashTable(int at_least_space_for,MinimumCapacity capacity_option)135 Handle<ObjectHashTable> Factory::NewObjectHashTable(
136 int at_least_space_for,
137 MinimumCapacity capacity_option) {
138 ASSERT(0 <= at_least_space_for);
139 CALL_HEAP_FUNCTION(isolate(),
140 ObjectHashTable::Allocate(isolate()->heap(),
141 at_least_space_for,
142 capacity_option),
143 ObjectHashTable);
144 }
145
146
NewWeakHashTable(int at_least_space_for)147 Handle<WeakHashTable> Factory::NewWeakHashTable(int at_least_space_for) {
148 ASSERT(0 <= at_least_space_for);
149 CALL_HEAP_FUNCTION(
150 isolate(),
151 WeakHashTable::Allocate(isolate()->heap(),
152 at_least_space_for,
153 USE_DEFAULT_MINIMUM_CAPACITY,
154 TENURED),
155 WeakHashTable);
156 }
157
158
NewDescriptorArray(int number_of_descriptors,int slack)159 Handle<DescriptorArray> Factory::NewDescriptorArray(int number_of_descriptors,
160 int slack) {
161 ASSERT(0 <= number_of_descriptors);
162 CALL_HEAP_FUNCTION(isolate(),
163 DescriptorArray::Allocate(
164 isolate(), number_of_descriptors, slack),
165 DescriptorArray);
166 }
167
168
NewDeoptimizationInputData(int deopt_entry_count,PretenureFlag pretenure)169 Handle<DeoptimizationInputData> Factory::NewDeoptimizationInputData(
170 int deopt_entry_count,
171 PretenureFlag pretenure) {
172 ASSERT(deopt_entry_count > 0);
173 CALL_HEAP_FUNCTION(isolate(),
174 DeoptimizationInputData::Allocate(isolate(),
175 deopt_entry_count,
176 pretenure),
177 DeoptimizationInputData);
178 }
179
180
NewDeoptimizationOutputData(int deopt_entry_count,PretenureFlag pretenure)181 Handle<DeoptimizationOutputData> Factory::NewDeoptimizationOutputData(
182 int deopt_entry_count,
183 PretenureFlag pretenure) {
184 ASSERT(deopt_entry_count > 0);
185 CALL_HEAP_FUNCTION(isolate(),
186 DeoptimizationOutputData::Allocate(isolate(),
187 deopt_entry_count,
188 pretenure),
189 DeoptimizationOutputData);
190 }
191
192
NewAccessorPair()193 Handle<AccessorPair> Factory::NewAccessorPair() {
194 CALL_HEAP_FUNCTION(isolate(),
195 isolate()->heap()->AllocateAccessorPair(),
196 AccessorPair);
197 }
198
199
NewTypeFeedbackInfo()200 Handle<TypeFeedbackInfo> Factory::NewTypeFeedbackInfo() {
201 CALL_HEAP_FUNCTION(isolate(),
202 isolate()->heap()->AllocateTypeFeedbackInfo(),
203 TypeFeedbackInfo);
204 }
205
206
207 // Internalized strings are created in the old generation (data space).
InternalizeUtf8String(Vector<const char> string)208 Handle<String> Factory::InternalizeUtf8String(Vector<const char> string) {
209 CALL_HEAP_FUNCTION(isolate(),
210 isolate()->heap()->InternalizeUtf8String(string),
211 String);
212 }
213
214
215 // Internalized strings are created in the old generation (data space).
InternalizeString(Handle<String> string)216 Handle<String> Factory::InternalizeString(Handle<String> string) {
217 CALL_HEAP_FUNCTION(isolate(),
218 isolate()->heap()->InternalizeString(*string),
219 String);
220 }
221
222
InternalizeOneByteString(Vector<const uint8_t> string)223 Handle<String> Factory::InternalizeOneByteString(Vector<const uint8_t> string) {
224 CALL_HEAP_FUNCTION(isolate(),
225 isolate()->heap()->InternalizeOneByteString(string),
226 String);
227 }
228
229
InternalizeOneByteString(Handle<SeqOneByteString> string,int from,int length)230 Handle<String> Factory::InternalizeOneByteString(
231 Handle<SeqOneByteString> string, int from, int length) {
232 CALL_HEAP_FUNCTION(isolate(),
233 isolate()->heap()->InternalizeOneByteString(
234 string, from, length),
235 String);
236 }
237
238
InternalizeTwoByteString(Vector<const uc16> string)239 Handle<String> Factory::InternalizeTwoByteString(Vector<const uc16> string) {
240 CALL_HEAP_FUNCTION(isolate(),
241 isolate()->heap()->InternalizeTwoByteString(string),
242 String);
243 }
244
245
NewStringFromOneByte(Vector<const uint8_t> string,PretenureFlag pretenure)246 Handle<String> Factory::NewStringFromOneByte(Vector<const uint8_t> string,
247 PretenureFlag pretenure) {
248 CALL_HEAP_FUNCTION(
249 isolate(),
250 isolate()->heap()->AllocateStringFromOneByte(string, pretenure),
251 String);
252 }
253
NewStringFromUtf8(Vector<const char> string,PretenureFlag pretenure)254 Handle<String> Factory::NewStringFromUtf8(Vector<const char> string,
255 PretenureFlag pretenure) {
256 CALL_HEAP_FUNCTION(
257 isolate(),
258 isolate()->heap()->AllocateStringFromUtf8(string, pretenure),
259 String);
260 }
261
262
NewStringFromTwoByte(Vector<const uc16> string,PretenureFlag pretenure)263 Handle<String> Factory::NewStringFromTwoByte(Vector<const uc16> string,
264 PretenureFlag pretenure) {
265 CALL_HEAP_FUNCTION(
266 isolate(),
267 isolate()->heap()->AllocateStringFromTwoByte(string, pretenure),
268 String);
269 }
270
271
NewRawOneByteString(int length,PretenureFlag pretenure)272 Handle<SeqOneByteString> Factory::NewRawOneByteString(int length,
273 PretenureFlag pretenure) {
274 CALL_HEAP_FUNCTION(
275 isolate(),
276 isolate()->heap()->AllocateRawOneByteString(length, pretenure),
277 SeqOneByteString);
278 }
279
280
NewRawTwoByteString(int length,PretenureFlag pretenure)281 Handle<SeqTwoByteString> Factory::NewRawTwoByteString(int length,
282 PretenureFlag pretenure) {
283 CALL_HEAP_FUNCTION(
284 isolate(),
285 isolate()->heap()->AllocateRawTwoByteString(length, pretenure),
286 SeqTwoByteString);
287 }
288
289
NewConsString(Handle<String> first,Handle<String> second)290 Handle<String> Factory::NewConsString(Handle<String> first,
291 Handle<String> second) {
292 CALL_HEAP_FUNCTION(isolate(),
293 isolate()->heap()->AllocateConsString(*first, *second),
294 String);
295 }
296
297
298 template<typename SinkChar, typename StringType>
ConcatStringContent(Handle<StringType> result,Handle<String> first,Handle<String> second)299 Handle<String> ConcatStringContent(Handle<StringType> result,
300 Handle<String> first,
301 Handle<String> second) {
302 DisallowHeapAllocation pointer_stays_valid;
303 SinkChar* sink = result->GetChars();
304 String::WriteToFlat(*first, sink, 0, first->length());
305 String::WriteToFlat(*second, sink + first->length(), 0, second->length());
306 return result;
307 }
308
309
NewFlatConcatString(Handle<String> first,Handle<String> second)310 Handle<String> Factory::NewFlatConcatString(Handle<String> first,
311 Handle<String> second) {
312 int total_length = first->length() + second->length();
313 if (first->IsOneByteRepresentation() && second->IsOneByteRepresentation()) {
314 return ConcatStringContent<uint8_t>(
315 NewRawOneByteString(total_length), first, second);
316 } else {
317 return ConcatStringContent<uc16>(
318 NewRawTwoByteString(total_length), first, second);
319 }
320 }
321
322
NewSubString(Handle<String> str,int begin,int end)323 Handle<String> Factory::NewSubString(Handle<String> str,
324 int begin,
325 int end) {
326 CALL_HEAP_FUNCTION(isolate(),
327 str->SubString(begin, end),
328 String);
329 }
330
331
NewProperSubString(Handle<String> str,int begin,int end)332 Handle<String> Factory::NewProperSubString(Handle<String> str,
333 int begin,
334 int end) {
335 ASSERT(begin > 0 || end < str->length());
336 CALL_HEAP_FUNCTION(isolate(),
337 isolate()->heap()->AllocateSubString(*str, begin, end),
338 String);
339 }
340
341
NewExternalStringFromAscii(const ExternalAsciiString::Resource * resource)342 Handle<String> Factory::NewExternalStringFromAscii(
343 const ExternalAsciiString::Resource* resource) {
344 CALL_HEAP_FUNCTION(
345 isolate(),
346 isolate()->heap()->AllocateExternalStringFromAscii(resource),
347 String);
348 }
349
350
NewExternalStringFromTwoByte(const ExternalTwoByteString::Resource * resource)351 Handle<String> Factory::NewExternalStringFromTwoByte(
352 const ExternalTwoByteString::Resource* resource) {
353 CALL_HEAP_FUNCTION(
354 isolate(),
355 isolate()->heap()->AllocateExternalStringFromTwoByte(resource),
356 String);
357 }
358
359
NewSymbol()360 Handle<Symbol> Factory::NewSymbol() {
361 CALL_HEAP_FUNCTION(
362 isolate(),
363 isolate()->heap()->AllocateSymbol(),
364 Symbol);
365 }
366
367
NewPrivateSymbol()368 Handle<Symbol> Factory::NewPrivateSymbol() {
369 CALL_HEAP_FUNCTION(
370 isolate(),
371 isolate()->heap()->AllocatePrivateSymbol(),
372 Symbol);
373 }
374
375
NewNativeContext()376 Handle<Context> Factory::NewNativeContext() {
377 CALL_HEAP_FUNCTION(
378 isolate(),
379 isolate()->heap()->AllocateNativeContext(),
380 Context);
381 }
382
383
NewGlobalContext(Handle<JSFunction> function,Handle<ScopeInfo> scope_info)384 Handle<Context> Factory::NewGlobalContext(Handle<JSFunction> function,
385 Handle<ScopeInfo> scope_info) {
386 CALL_HEAP_FUNCTION(
387 isolate(),
388 isolate()->heap()->AllocateGlobalContext(*function, *scope_info),
389 Context);
390 }
391
392
NewModuleContext(Handle<ScopeInfo> scope_info)393 Handle<Context> Factory::NewModuleContext(Handle<ScopeInfo> scope_info) {
394 CALL_HEAP_FUNCTION(
395 isolate(),
396 isolate()->heap()->AllocateModuleContext(*scope_info),
397 Context);
398 }
399
400
NewFunctionContext(int length,Handle<JSFunction> function)401 Handle<Context> Factory::NewFunctionContext(int length,
402 Handle<JSFunction> function) {
403 CALL_HEAP_FUNCTION(
404 isolate(),
405 isolate()->heap()->AllocateFunctionContext(length, *function),
406 Context);
407 }
408
409
NewCatchContext(Handle<JSFunction> function,Handle<Context> previous,Handle<String> name,Handle<Object> thrown_object)410 Handle<Context> Factory::NewCatchContext(Handle<JSFunction> function,
411 Handle<Context> previous,
412 Handle<String> name,
413 Handle<Object> thrown_object) {
414 CALL_HEAP_FUNCTION(
415 isolate(),
416 isolate()->heap()->AllocateCatchContext(*function,
417 *previous,
418 *name,
419 *thrown_object),
420 Context);
421 }
422
423
NewWithContext(Handle<JSFunction> function,Handle<Context> previous,Handle<JSObject> extension)424 Handle<Context> Factory::NewWithContext(Handle<JSFunction> function,
425 Handle<Context> previous,
426 Handle<JSObject> extension) {
427 CALL_HEAP_FUNCTION(
428 isolate(),
429 isolate()->heap()->AllocateWithContext(*function, *previous, *extension),
430 Context);
431 }
432
433
NewBlockContext(Handle<JSFunction> function,Handle<Context> previous,Handle<ScopeInfo> scope_info)434 Handle<Context> Factory::NewBlockContext(Handle<JSFunction> function,
435 Handle<Context> previous,
436 Handle<ScopeInfo> scope_info) {
437 CALL_HEAP_FUNCTION(
438 isolate(),
439 isolate()->heap()->AllocateBlockContext(*function,
440 *previous,
441 *scope_info),
442 Context);
443 }
444
445
NewStruct(InstanceType type)446 Handle<Struct> Factory::NewStruct(InstanceType type) {
447 CALL_HEAP_FUNCTION(
448 isolate(),
449 isolate()->heap()->AllocateStruct(type),
450 Struct);
451 }
452
453
NewAliasedArgumentsEntry(int aliased_context_slot)454 Handle<AliasedArgumentsEntry> Factory::NewAliasedArgumentsEntry(
455 int aliased_context_slot) {
456 Handle<AliasedArgumentsEntry> entry = Handle<AliasedArgumentsEntry>::cast(
457 NewStruct(ALIASED_ARGUMENTS_ENTRY_TYPE));
458 entry->set_aliased_context_slot(aliased_context_slot);
459 return entry;
460 }
461
462
NewDeclaredAccessorDescriptor()463 Handle<DeclaredAccessorDescriptor> Factory::NewDeclaredAccessorDescriptor() {
464 return Handle<DeclaredAccessorDescriptor>::cast(
465 NewStruct(DECLARED_ACCESSOR_DESCRIPTOR_TYPE));
466 }
467
468
NewDeclaredAccessorInfo()469 Handle<DeclaredAccessorInfo> Factory::NewDeclaredAccessorInfo() {
470 Handle<DeclaredAccessorInfo> info =
471 Handle<DeclaredAccessorInfo>::cast(
472 NewStruct(DECLARED_ACCESSOR_INFO_TYPE));
473 info->set_flag(0); // Must clear the flag, it was initialized as undefined.
474 return info;
475 }
476
477
NewExecutableAccessorInfo()478 Handle<ExecutableAccessorInfo> Factory::NewExecutableAccessorInfo() {
479 Handle<ExecutableAccessorInfo> info =
480 Handle<ExecutableAccessorInfo>::cast(
481 NewStruct(EXECUTABLE_ACCESSOR_INFO_TYPE));
482 info->set_flag(0); // Must clear the flag, it was initialized as undefined.
483 return info;
484 }
485
486
NewScript(Handle<String> source)487 Handle<Script> Factory::NewScript(Handle<String> source) {
488 // Generate id for this script.
489 Heap* heap = isolate()->heap();
490 int id = heap->last_script_id()->value() + 1;
491 if (!Smi::IsValid(id) || id < 0) id = 1;
492 heap->set_last_script_id(Smi::FromInt(id));
493
494 // Create and initialize script object.
495 Handle<Foreign> wrapper = NewForeign(0, TENURED);
496 Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE));
497 script->set_source(*source);
498 script->set_name(heap->undefined_value());
499 script->set_id(Smi::FromInt(id));
500 script->set_line_offset(Smi::FromInt(0));
501 script->set_column_offset(Smi::FromInt(0));
502 script->set_data(heap->undefined_value());
503 script->set_context_data(heap->undefined_value());
504 script->set_type(Smi::FromInt(Script::TYPE_NORMAL));
505 script->set_wrapper(*wrapper);
506 script->set_line_ends(heap->undefined_value());
507 script->set_eval_from_shared(heap->undefined_value());
508 script->set_eval_from_instructions_offset(Smi::FromInt(0));
509 script->set_flags(Smi::FromInt(0));
510
511 return script;
512 }
513
514
NewForeign(Address addr,PretenureFlag pretenure)515 Handle<Foreign> Factory::NewForeign(Address addr, PretenureFlag pretenure) {
516 CALL_HEAP_FUNCTION(isolate(),
517 isolate()->heap()->AllocateForeign(addr, pretenure),
518 Foreign);
519 }
520
521
NewForeign(const AccessorDescriptor * desc)522 Handle<Foreign> Factory::NewForeign(const AccessorDescriptor* desc) {
523 return NewForeign((Address) desc, TENURED);
524 }
525
526
NewByteArray(int length,PretenureFlag pretenure)527 Handle<ByteArray> Factory::NewByteArray(int length, PretenureFlag pretenure) {
528 ASSERT(0 <= length);
529 CALL_HEAP_FUNCTION(
530 isolate(),
531 isolate()->heap()->AllocateByteArray(length, pretenure),
532 ByteArray);
533 }
534
535
NewExternalArray(int length,ExternalArrayType array_type,void * external_pointer,PretenureFlag pretenure)536 Handle<ExternalArray> Factory::NewExternalArray(int length,
537 ExternalArrayType array_type,
538 void* external_pointer,
539 PretenureFlag pretenure) {
540 ASSERT(0 <= length);
541 CALL_HEAP_FUNCTION(
542 isolate(),
543 isolate()->heap()->AllocateExternalArray(length,
544 array_type,
545 external_pointer,
546 pretenure),
547 ExternalArray);
548 }
549
550
NewCell(Handle<Object> value)551 Handle<Cell> Factory::NewCell(Handle<Object> value) {
552 AllowDeferredHandleDereference convert_to_cell;
553 CALL_HEAP_FUNCTION(
554 isolate(),
555 isolate()->heap()->AllocateCell(*value),
556 Cell);
557 }
558
559
NewPropertyCellWithHole()560 Handle<PropertyCell> Factory::NewPropertyCellWithHole() {
561 CALL_HEAP_FUNCTION(
562 isolate(),
563 isolate()->heap()->AllocatePropertyCell(),
564 PropertyCell);
565 }
566
567
NewPropertyCell(Handle<Object> value)568 Handle<PropertyCell> Factory::NewPropertyCell(Handle<Object> value) {
569 AllowDeferredHandleDereference convert_to_cell;
570 Handle<PropertyCell> cell = NewPropertyCellWithHole();
571 PropertyCell::SetValueInferType(cell, value);
572 return cell;
573 }
574
575
NewAllocationSite()576 Handle<AllocationSite> Factory::NewAllocationSite() {
577 CALL_HEAP_FUNCTION(
578 isolate(),
579 isolate()->heap()->AllocateAllocationSite(),
580 AllocationSite);
581 }
582
583
NewMap(InstanceType type,int instance_size,ElementsKind elements_kind)584 Handle<Map> Factory::NewMap(InstanceType type,
585 int instance_size,
586 ElementsKind elements_kind) {
587 CALL_HEAP_FUNCTION(
588 isolate(),
589 isolate()->heap()->AllocateMap(type, instance_size, elements_kind),
590 Map);
591 }
592
593
NewFunctionPrototype(Handle<JSFunction> function)594 Handle<JSObject> Factory::NewFunctionPrototype(Handle<JSFunction> function) {
595 // Make sure to use globals from the function's context, since the function
596 // can be from a different context.
597 Handle<Context> native_context(function->context()->native_context());
598 Handle<Map> new_map;
599 if (function->shared()->is_generator()) {
600 // Generator prototypes can share maps since they don't have "constructor"
601 // properties.
602 new_map = handle(native_context->generator_object_prototype_map());
603 } else {
604 // Each function prototype gets a fresh map to avoid unwanted sharing of
605 // maps between prototypes of different constructors.
606 Handle<JSFunction> object_function(native_context->object_function());
607 ASSERT(object_function->has_initial_map());
608 new_map = Map::Copy(handle(object_function->initial_map()));
609 }
610
611 Handle<JSObject> prototype = NewJSObjectFromMap(new_map);
612
613 if (!function->shared()->is_generator()) {
614 JSObject::SetLocalPropertyIgnoreAttributes(prototype,
615 constructor_string(),
616 function,
617 DONT_ENUM);
618 }
619
620 return prototype;
621 }
622
623
CopyWithPreallocatedFieldDescriptors(Handle<Map> src)624 Handle<Map> Factory::CopyWithPreallocatedFieldDescriptors(Handle<Map> src) {
625 CALL_HEAP_FUNCTION(
626 isolate(), src->CopyWithPreallocatedFieldDescriptors(), Map);
627 }
628
629
CopyMap(Handle<Map> src,int extra_inobject_properties)630 Handle<Map> Factory::CopyMap(Handle<Map> src,
631 int extra_inobject_properties) {
632 Handle<Map> copy = CopyWithPreallocatedFieldDescriptors(src);
633 // Check that we do not overflow the instance size when adding the
634 // extra inobject properties.
635 int instance_size_delta = extra_inobject_properties * kPointerSize;
636 int max_instance_size_delta =
637 JSObject::kMaxInstanceSize - copy->instance_size();
638 int max_extra_properties = max_instance_size_delta >> kPointerSizeLog2;
639 if (extra_inobject_properties > max_extra_properties) {
640 // If the instance size overflows, we allocate as many properties
641 // as we can as inobject properties.
642 instance_size_delta = max_instance_size_delta;
643 extra_inobject_properties = max_extra_properties;
644 }
645 // Adjust the map with the extra inobject properties.
646 int inobject_properties =
647 copy->inobject_properties() + extra_inobject_properties;
648 copy->set_inobject_properties(inobject_properties);
649 copy->set_unused_property_fields(inobject_properties);
650 copy->set_instance_size(copy->instance_size() + instance_size_delta);
651 copy->set_visitor_id(StaticVisitorBase::GetVisitorId(*copy));
652 return copy;
653 }
654
655
CopyMap(Handle<Map> src)656 Handle<Map> Factory::CopyMap(Handle<Map> src) {
657 CALL_HEAP_FUNCTION(isolate(), src->Copy(), Map);
658 }
659
660
GetElementsTransitionMap(Handle<JSObject> src,ElementsKind elements_kind)661 Handle<Map> Factory::GetElementsTransitionMap(
662 Handle<JSObject> src,
663 ElementsKind elements_kind) {
664 Isolate* i = isolate();
665 CALL_HEAP_FUNCTION(i,
666 src->GetElementsTransitionMap(i, elements_kind),
667 Map);
668 }
669
670
CopyFixedArray(Handle<FixedArray> array)671 Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
672 CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedArray);
673 }
674
675
CopySizeFixedArray(Handle<FixedArray> array,int new_length,PretenureFlag pretenure)676 Handle<FixedArray> Factory::CopySizeFixedArray(Handle<FixedArray> array,
677 int new_length,
678 PretenureFlag pretenure) {
679 CALL_HEAP_FUNCTION(isolate(),
680 array->CopySize(new_length, pretenure),
681 FixedArray);
682 }
683
684
CopyFixedDoubleArray(Handle<FixedDoubleArray> array)685 Handle<FixedDoubleArray> Factory::CopyFixedDoubleArray(
686 Handle<FixedDoubleArray> array) {
687 CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedDoubleArray);
688 }
689
690
CopyConstantPoolArray(Handle<ConstantPoolArray> array)691 Handle<ConstantPoolArray> Factory::CopyConstantPoolArray(
692 Handle<ConstantPoolArray> array) {
693 CALL_HEAP_FUNCTION(isolate(), array->Copy(), ConstantPoolArray);
694 }
695
696
BaseNewFunctionFromSharedFunctionInfo(Handle<SharedFunctionInfo> function_info,Handle<Map> function_map,PretenureFlag pretenure)697 Handle<JSFunction> Factory::BaseNewFunctionFromSharedFunctionInfo(
698 Handle<SharedFunctionInfo> function_info,
699 Handle<Map> function_map,
700 PretenureFlag pretenure) {
701 CALL_HEAP_FUNCTION(
702 isolate(),
703 isolate()->heap()->AllocateFunction(*function_map,
704 *function_info,
705 isolate()->heap()->the_hole_value(),
706 pretenure),
707 JSFunction);
708 }
709
710
MapForNewFunction(Isolate * isolate,Handle<SharedFunctionInfo> function_info)711 static Handle<Map> MapForNewFunction(Isolate *isolate,
712 Handle<SharedFunctionInfo> function_info) {
713 Context *context = isolate->context()->native_context();
714 int map_index = Context::FunctionMapIndex(function_info->language_mode(),
715 function_info->is_generator());
716 return Handle<Map>(Map::cast(context->get(map_index)));
717 }
718
719
NewFunctionFromSharedFunctionInfo(Handle<SharedFunctionInfo> function_info,Handle<Context> context,PretenureFlag pretenure)720 Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo(
721 Handle<SharedFunctionInfo> function_info,
722 Handle<Context> context,
723 PretenureFlag pretenure) {
724 Handle<JSFunction> result = BaseNewFunctionFromSharedFunctionInfo(
725 function_info,
726 MapForNewFunction(isolate(), function_info),
727 pretenure);
728
729 if (function_info->ic_age() != isolate()->heap()->global_ic_age()) {
730 function_info->ResetForNewContext(isolate()->heap()->global_ic_age());
731 }
732
733 result->set_context(*context);
734
735 int index = function_info->SearchOptimizedCodeMap(context->native_context());
736 if (!function_info->bound() && index < 0) {
737 int number_of_literals = function_info->num_literals();
738 Handle<FixedArray> literals = NewFixedArray(number_of_literals, pretenure);
739 if (number_of_literals > 0) {
740 // Store the native context in the literals array prefix. This
741 // context will be used when creating object, regexp and array
742 // literals in this function.
743 literals->set(JSFunction::kLiteralNativeContextIndex,
744 context->native_context());
745 }
746 result->set_literals(*literals);
747 }
748
749 if (index > 0) {
750 // Caching of optimized code enabled and optimized code found.
751 function_info->InstallFromOptimizedCodeMap(*result, index);
752 return result;
753 }
754
755 if (isolate()->use_crankshaft() &&
756 FLAG_always_opt &&
757 result->is_compiled() &&
758 !function_info->is_toplevel() &&
759 function_info->allows_lazy_compilation() &&
760 !function_info->optimization_disabled() &&
761 !isolate()->DebuggerHasBreakPoints()) {
762 result->MarkForLazyRecompilation();
763 }
764 return result;
765 }
766
767
NewNumber(double value,PretenureFlag pretenure)768 Handle<Object> Factory::NewNumber(double value,
769 PretenureFlag pretenure) {
770 CALL_HEAP_FUNCTION(
771 isolate(),
772 isolate()->heap()->NumberFromDouble(value, pretenure), Object);
773 }
774
775
NewNumberFromInt(int32_t value,PretenureFlag pretenure)776 Handle<Object> Factory::NewNumberFromInt(int32_t value,
777 PretenureFlag pretenure) {
778 CALL_HEAP_FUNCTION(
779 isolate(),
780 isolate()->heap()->NumberFromInt32(value, pretenure), Object);
781 }
782
783
NewNumberFromUint(uint32_t value,PretenureFlag pretenure)784 Handle<Object> Factory::NewNumberFromUint(uint32_t value,
785 PretenureFlag pretenure) {
786 CALL_HEAP_FUNCTION(
787 isolate(),
788 isolate()->heap()->NumberFromUint32(value, pretenure), Object);
789 }
790
791
NewHeapNumber(double value,PretenureFlag pretenure)792 Handle<HeapNumber> Factory::NewHeapNumber(double value,
793 PretenureFlag pretenure) {
794 CALL_HEAP_FUNCTION(
795 isolate(),
796 isolate()->heap()->AllocateHeapNumber(value, pretenure), HeapNumber);
797 }
798
799
NewNeanderObject()800 Handle<JSObject> Factory::NewNeanderObject() {
801 CALL_HEAP_FUNCTION(
802 isolate(),
803 isolate()->heap()->AllocateJSObjectFromMap(
804 isolate()->heap()->neander_map()),
805 JSObject);
806 }
807
808
NewTypeError(const char * message,Vector<Handle<Object>> args)809 Handle<Object> Factory::NewTypeError(const char* message,
810 Vector< Handle<Object> > args) {
811 return NewError("MakeTypeError", message, args);
812 }
813
814
NewTypeError(Handle<String> message)815 Handle<Object> Factory::NewTypeError(Handle<String> message) {
816 return NewError("$TypeError", message);
817 }
818
819
NewRangeError(const char * message,Vector<Handle<Object>> args)820 Handle<Object> Factory::NewRangeError(const char* message,
821 Vector< Handle<Object> > args) {
822 return NewError("MakeRangeError", message, args);
823 }
824
825
NewRangeError(Handle<String> message)826 Handle<Object> Factory::NewRangeError(Handle<String> message) {
827 return NewError("$RangeError", message);
828 }
829
830
NewSyntaxError(const char * message,Handle<JSArray> args)831 Handle<Object> Factory::NewSyntaxError(const char* message,
832 Handle<JSArray> args) {
833 return NewError("MakeSyntaxError", message, args);
834 }
835
836
NewSyntaxError(Handle<String> message)837 Handle<Object> Factory::NewSyntaxError(Handle<String> message) {
838 return NewError("$SyntaxError", message);
839 }
840
841
NewReferenceError(const char * message,Vector<Handle<Object>> args)842 Handle<Object> Factory::NewReferenceError(const char* message,
843 Vector< Handle<Object> > args) {
844 return NewError("MakeReferenceError", message, args);
845 }
846
847
NewReferenceError(Handle<String> message)848 Handle<Object> Factory::NewReferenceError(Handle<String> message) {
849 return NewError("$ReferenceError", message);
850 }
851
852
NewError(const char * maker,const char * message,Vector<Handle<Object>> args)853 Handle<Object> Factory::NewError(const char* maker,
854 const char* message,
855 Vector< Handle<Object> > args) {
856 // Instantiate a closeable HandleScope for EscapeFrom.
857 v8::EscapableHandleScope scope(reinterpret_cast<v8::Isolate*>(isolate()));
858 Handle<FixedArray> array = NewFixedArray(args.length());
859 for (int i = 0; i < args.length(); i++) {
860 array->set(i, *args[i]);
861 }
862 Handle<JSArray> object = NewJSArrayWithElements(array);
863 Handle<Object> result = NewError(maker, message, object);
864 return result.EscapeFrom(&scope);
865 }
866
867
NewEvalError(const char * message,Vector<Handle<Object>> args)868 Handle<Object> Factory::NewEvalError(const char* message,
869 Vector< Handle<Object> > args) {
870 return NewError("MakeEvalError", message, args);
871 }
872
873
NewError(const char * message,Vector<Handle<Object>> args)874 Handle<Object> Factory::NewError(const char* message,
875 Vector< Handle<Object> > args) {
876 return NewError("MakeError", message, args);
877 }
878
879
EmergencyNewError(const char * message,Handle<JSArray> args)880 Handle<String> Factory::EmergencyNewError(const char* message,
881 Handle<JSArray> args) {
882 const int kBufferSize = 1000;
883 char buffer[kBufferSize];
884 size_t space = kBufferSize;
885 char* p = &buffer[0];
886
887 Vector<char> v(buffer, kBufferSize);
888 OS::StrNCpy(v, message, space);
889 space -= Min(space, strlen(message));
890 p = &buffer[kBufferSize] - space;
891
892 for (unsigned i = 0; i < ARRAY_SIZE(args); i++) {
893 if (space > 0) {
894 *p++ = ' ';
895 space--;
896 if (space > 0) {
897 MaybeObject* maybe_arg = args->GetElement(isolate(), i);
898 Handle<String> arg_str(reinterpret_cast<String*>(maybe_arg));
899 const char* arg = *arg_str->ToCString();
900 Vector<char> v2(p, static_cast<int>(space));
901 OS::StrNCpy(v2, arg, space);
902 space -= Min(space, strlen(arg));
903 p = &buffer[kBufferSize] - space;
904 }
905 }
906 }
907 if (space > 0) {
908 *p = '\0';
909 } else {
910 buffer[kBufferSize - 1] = '\0';
911 }
912 Handle<String> error_string = NewStringFromUtf8(CStrVector(buffer), TENURED);
913 return error_string;
914 }
915
916
NewError(const char * maker,const char * message,Handle<JSArray> args)917 Handle<Object> Factory::NewError(const char* maker,
918 const char* message,
919 Handle<JSArray> args) {
920 Handle<String> make_str = InternalizeUtf8String(maker);
921 Handle<Object> fun_obj(
922 isolate()->js_builtins_object()->GetPropertyNoExceptionThrown(*make_str),
923 isolate());
924 // If the builtins haven't been properly configured yet this error
925 // constructor may not have been defined. Bail out.
926 if (!fun_obj->IsJSFunction()) {
927 return EmergencyNewError(message, args);
928 }
929 Handle<JSFunction> fun = Handle<JSFunction>::cast(fun_obj);
930 Handle<Object> message_obj = InternalizeUtf8String(message);
931 Handle<Object> argv[] = { message_obj, args };
932
933 // Invoke the JavaScript factory method. If an exception is thrown while
934 // running the factory method, use the exception as the result.
935 bool caught_exception;
936 Handle<Object> result = Execution::TryCall(fun,
937 isolate()->js_builtins_object(),
938 ARRAY_SIZE(argv),
939 argv,
940 &caught_exception);
941 return result;
942 }
943
944
NewError(Handle<String> message)945 Handle<Object> Factory::NewError(Handle<String> message) {
946 return NewError("$Error", message);
947 }
948
949
NewError(const char * constructor,Handle<String> message)950 Handle<Object> Factory::NewError(const char* constructor,
951 Handle<String> message) {
952 Handle<String> constr = InternalizeUtf8String(constructor);
953 Handle<JSFunction> fun = Handle<JSFunction>(
954 JSFunction::cast(isolate()->js_builtins_object()->
955 GetPropertyNoExceptionThrown(*constr)));
956 Handle<Object> argv[] = { message };
957
958 // Invoke the JavaScript factory method. If an exception is thrown while
959 // running the factory method, use the exception as the result.
960 bool caught_exception;
961 Handle<Object> result = Execution::TryCall(fun,
962 isolate()->js_builtins_object(),
963 ARRAY_SIZE(argv),
964 argv,
965 &caught_exception);
966 return result;
967 }
968
969
NewFunction(Handle<String> name,InstanceType type,int instance_size,Handle<Code> code,bool force_initial_map)970 Handle<JSFunction> Factory::NewFunction(Handle<String> name,
971 InstanceType type,
972 int instance_size,
973 Handle<Code> code,
974 bool force_initial_map) {
975 // Allocate the function
976 Handle<JSFunction> function = NewFunction(name, the_hole_value());
977
978 // Set up the code pointer in both the shared function info and in
979 // the function itself.
980 function->shared()->set_code(*code);
981 function->set_code(*code);
982
983 if (force_initial_map ||
984 type != JS_OBJECT_TYPE ||
985 instance_size != JSObject::kHeaderSize) {
986 Handle<Map> initial_map = NewMap(type, instance_size);
987 Handle<JSObject> prototype = NewFunctionPrototype(function);
988 initial_map->set_prototype(*prototype);
989 function->set_initial_map(*initial_map);
990 initial_map->set_constructor(*function);
991 } else {
992 ASSERT(!function->has_initial_map());
993 ASSERT(!function->has_prototype());
994 }
995
996 return function;
997 }
998
999
NewFunctionWithPrototype(Handle<String> name,InstanceType type,int instance_size,Handle<JSObject> prototype,Handle<Code> code,bool force_initial_map)1000 Handle<JSFunction> Factory::NewFunctionWithPrototype(Handle<String> name,
1001 InstanceType type,
1002 int instance_size,
1003 Handle<JSObject> prototype,
1004 Handle<Code> code,
1005 bool force_initial_map) {
1006 // Allocate the function.
1007 Handle<JSFunction> function = NewFunction(name, prototype);
1008
1009 // Set up the code pointer in both the shared function info and in
1010 // the function itself.
1011 function->shared()->set_code(*code);
1012 function->set_code(*code);
1013
1014 if (force_initial_map ||
1015 type != JS_OBJECT_TYPE ||
1016 instance_size != JSObject::kHeaderSize) {
1017 Handle<Map> initial_map = NewMap(type,
1018 instance_size,
1019 GetInitialFastElementsKind());
1020 function->set_initial_map(*initial_map);
1021 initial_map->set_constructor(*function);
1022 }
1023
1024 JSFunction::SetPrototype(function, prototype);
1025 return function;
1026 }
1027
1028
NewFunctionWithoutPrototype(Handle<String> name,Handle<Code> code)1029 Handle<JSFunction> Factory::NewFunctionWithoutPrototype(Handle<String> name,
1030 Handle<Code> code) {
1031 Handle<JSFunction> function = NewFunctionWithoutPrototype(name,
1032 CLASSIC_MODE);
1033 function->shared()->set_code(*code);
1034 function->set_code(*code);
1035 ASSERT(!function->has_initial_map());
1036 ASSERT(!function->has_prototype());
1037 return function;
1038 }
1039
1040
NewScopeInfo(int length)1041 Handle<ScopeInfo> Factory::NewScopeInfo(int length) {
1042 CALL_HEAP_FUNCTION(
1043 isolate(),
1044 isolate()->heap()->AllocateScopeInfo(length),
1045 ScopeInfo);
1046 }
1047
1048
NewExternal(void * value)1049 Handle<JSObject> Factory::NewExternal(void* value) {
1050 CALL_HEAP_FUNCTION(isolate(),
1051 isolate()->heap()->AllocateExternal(value),
1052 JSObject);
1053 }
1054
1055
NewCode(const CodeDesc & desc,Code::Flags flags,Handle<Object> self_ref,bool immovable,bool crankshafted,int prologue_offset)1056 Handle<Code> Factory::NewCode(const CodeDesc& desc,
1057 Code::Flags flags,
1058 Handle<Object> self_ref,
1059 bool immovable,
1060 bool crankshafted,
1061 int prologue_offset) {
1062 CALL_HEAP_FUNCTION(isolate(),
1063 isolate()->heap()->CreateCode(
1064 desc, flags, self_ref, immovable, crankshafted,
1065 prologue_offset),
1066 Code);
1067 }
1068
1069
CopyCode(Handle<Code> code)1070 Handle<Code> Factory::CopyCode(Handle<Code> code) {
1071 CALL_HEAP_FUNCTION(isolate(),
1072 isolate()->heap()->CopyCode(*code),
1073 Code);
1074 }
1075
1076
CopyCode(Handle<Code> code,Vector<byte> reloc_info)1077 Handle<Code> Factory::CopyCode(Handle<Code> code, Vector<byte> reloc_info) {
1078 CALL_HEAP_FUNCTION(isolate(),
1079 isolate()->heap()->CopyCode(*code, reloc_info),
1080 Code);
1081 }
1082
1083
InternalizedStringFromString(Handle<String> value)1084 Handle<String> Factory::InternalizedStringFromString(Handle<String> value) {
1085 CALL_HEAP_FUNCTION(isolate(),
1086 isolate()->heap()->InternalizeString(*value), String);
1087 }
1088
1089
NewJSObject(Handle<JSFunction> constructor,PretenureFlag pretenure)1090 Handle<JSObject> Factory::NewJSObject(Handle<JSFunction> constructor,
1091 PretenureFlag pretenure) {
1092 JSFunction::EnsureHasInitialMap(constructor);
1093 CALL_HEAP_FUNCTION(
1094 isolate(),
1095 isolate()->heap()->AllocateJSObject(*constructor, pretenure), JSObject);
1096 }
1097
1098
NewJSModule(Handle<Context> context,Handle<ScopeInfo> scope_info)1099 Handle<JSModule> Factory::NewJSModule(Handle<Context> context,
1100 Handle<ScopeInfo> scope_info) {
1101 CALL_HEAP_FUNCTION(
1102 isolate(),
1103 isolate()->heap()->AllocateJSModule(*context, *scope_info), JSModule);
1104 }
1105
1106
1107 // TODO(mstarzinger): Temporary wrapper until handlified.
NameDictionaryAdd(Handle<NameDictionary> dict,Handle<Name> name,Handle<Object> value,PropertyDetails details)1108 static Handle<NameDictionary> NameDictionaryAdd(Handle<NameDictionary> dict,
1109 Handle<Name> name,
1110 Handle<Object> value,
1111 PropertyDetails details) {
1112 CALL_HEAP_FUNCTION(dict->GetIsolate(),
1113 dict->Add(*name, *value, details),
1114 NameDictionary);
1115 }
1116
1117
NewGlobalObjectFromMap(Isolate * isolate,Handle<Map> map)1118 static Handle<GlobalObject> NewGlobalObjectFromMap(Isolate* isolate,
1119 Handle<Map> map) {
1120 CALL_HEAP_FUNCTION(isolate,
1121 isolate->heap()->Allocate(*map, OLD_POINTER_SPACE),
1122 GlobalObject);
1123 }
1124
1125
NewGlobalObject(Handle<JSFunction> constructor)1126 Handle<GlobalObject> Factory::NewGlobalObject(Handle<JSFunction> constructor) {
1127 ASSERT(constructor->has_initial_map());
1128 Handle<Map> map(constructor->initial_map());
1129 ASSERT(map->is_dictionary_map());
1130
1131 // Make sure no field properties are described in the initial map.
1132 // This guarantees us that normalizing the properties does not
1133 // require us to change property values to PropertyCells.
1134 ASSERT(map->NextFreePropertyIndex() == 0);
1135
1136 // Make sure we don't have a ton of pre-allocated slots in the
1137 // global objects. They will be unused once we normalize the object.
1138 ASSERT(map->unused_property_fields() == 0);
1139 ASSERT(map->inobject_properties() == 0);
1140
1141 // Initial size of the backing store to avoid resize of the storage during
1142 // bootstrapping. The size differs between the JS global object ad the
1143 // builtins object.
1144 int initial_size = map->instance_type() == JS_GLOBAL_OBJECT_TYPE ? 64 : 512;
1145
1146 // Allocate a dictionary object for backing storage.
1147 int at_least_space_for = map->NumberOfOwnDescriptors() * 2 + initial_size;
1148 Handle<NameDictionary> dictionary = NewNameDictionary(at_least_space_for);
1149
1150 // The global object might be created from an object template with accessors.
1151 // Fill these accessors into the dictionary.
1152 Handle<DescriptorArray> descs(map->instance_descriptors());
1153 for (int i = 0; i < map->NumberOfOwnDescriptors(); i++) {
1154 PropertyDetails details = descs->GetDetails(i);
1155 ASSERT(details.type() == CALLBACKS); // Only accessors are expected.
1156 PropertyDetails d = PropertyDetails(details.attributes(), CALLBACKS, i + 1);
1157 Handle<Name> name(descs->GetKey(i));
1158 Handle<Object> value(descs->GetCallbacksObject(i), isolate());
1159 Handle<PropertyCell> cell = NewPropertyCell(value);
1160 NameDictionaryAdd(dictionary, name, cell, d);
1161 }
1162
1163 // Allocate the global object and initialize it with the backing store.
1164 Handle<GlobalObject> global = NewGlobalObjectFromMap(isolate(), map);
1165 isolate()->heap()->InitializeJSObjectFromMap(*global, *dictionary, *map);
1166
1167 // Create a new map for the global object.
1168 Handle<Map> new_map = Map::CopyDropDescriptors(map);
1169 new_map->set_dictionary_map(true);
1170
1171 // Set up the global object as a normalized object.
1172 global->set_map(*new_map);
1173 global->set_properties(*dictionary);
1174
1175 // Make sure result is a global object with properties in dictionary.
1176 ASSERT(global->IsGlobalObject() && !global->HasFastProperties());
1177 return global;
1178 }
1179
1180
NewJSObjectFromMap(Handle<Map> map,PretenureFlag pretenure,bool alloc_props)1181 Handle<JSObject> Factory::NewJSObjectFromMap(Handle<Map> map,
1182 PretenureFlag pretenure,
1183 bool alloc_props) {
1184 CALL_HEAP_FUNCTION(
1185 isolate(),
1186 isolate()->heap()->AllocateJSObjectFromMap(*map, pretenure, alloc_props),
1187 JSObject);
1188 }
1189
1190
NewJSArray(int capacity,ElementsKind elements_kind,PretenureFlag pretenure)1191 Handle<JSArray> Factory::NewJSArray(int capacity,
1192 ElementsKind elements_kind,
1193 PretenureFlag pretenure) {
1194 if (capacity != 0) {
1195 elements_kind = GetHoleyElementsKind(elements_kind);
1196 }
1197 CALL_HEAP_FUNCTION(isolate(),
1198 isolate()->heap()->AllocateJSArrayAndStorage(
1199 elements_kind,
1200 0,
1201 capacity,
1202 INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE,
1203 pretenure),
1204 JSArray);
1205 }
1206
1207
NewJSArrayWithElements(Handle<FixedArrayBase> elements,ElementsKind elements_kind,PretenureFlag pretenure)1208 Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArrayBase> elements,
1209 ElementsKind elements_kind,
1210 PretenureFlag pretenure) {
1211 CALL_HEAP_FUNCTION(
1212 isolate(),
1213 isolate()->heap()->AllocateJSArrayWithElements(*elements,
1214 elements_kind,
1215 elements->length(),
1216 pretenure),
1217 JSArray);
1218 }
1219
1220
SetElementsCapacityAndLength(Handle<JSArray> array,int capacity,int length)1221 void Factory::SetElementsCapacityAndLength(Handle<JSArray> array,
1222 int capacity,
1223 int length) {
1224 ElementsAccessor* accessor = array->GetElementsAccessor();
1225 CALL_HEAP_FUNCTION_VOID(
1226 isolate(),
1227 accessor->SetCapacityAndLength(*array, capacity, length));
1228 }
1229
1230
SetContent(Handle<JSArray> array,Handle<FixedArrayBase> elements)1231 void Factory::SetContent(Handle<JSArray> array,
1232 Handle<FixedArrayBase> elements) {
1233 CALL_HEAP_FUNCTION_VOID(
1234 isolate(),
1235 array->SetContent(*elements));
1236 }
1237
1238
NewJSGeneratorObject(Handle<JSFunction> function)1239 Handle<JSGeneratorObject> Factory::NewJSGeneratorObject(
1240 Handle<JSFunction> function) {
1241 ASSERT(function->shared()->is_generator());
1242 JSFunction::EnsureHasInitialMap(function);
1243 Handle<Map> map(function->initial_map());
1244 ASSERT(map->instance_type() == JS_GENERATOR_OBJECT_TYPE);
1245 CALL_HEAP_FUNCTION(
1246 isolate(),
1247 isolate()->heap()->AllocateJSObjectFromMap(*map),
1248 JSGeneratorObject);
1249 }
1250
1251
NewJSArrayBuffer()1252 Handle<JSArrayBuffer> Factory::NewJSArrayBuffer() {
1253 Handle<JSFunction> array_buffer_fun(
1254 isolate()->context()->native_context()->array_buffer_fun());
1255 CALL_HEAP_FUNCTION(
1256 isolate(),
1257 isolate()->heap()->AllocateJSObject(*array_buffer_fun),
1258 JSArrayBuffer);
1259 }
1260
1261
NewJSDataView()1262 Handle<JSDataView> Factory::NewJSDataView() {
1263 Handle<JSFunction> data_view_fun(
1264 isolate()->context()->native_context()->data_view_fun());
1265 CALL_HEAP_FUNCTION(
1266 isolate(),
1267 isolate()->heap()->AllocateJSObject(*data_view_fun),
1268 JSDataView);
1269 }
1270
1271
GetTypedArrayFun(ExternalArrayType type,Isolate * isolate)1272 static JSFunction* GetTypedArrayFun(ExternalArrayType type,
1273 Isolate* isolate) {
1274 Context* native_context = isolate->context()->native_context();
1275 switch (type) {
1276 case kExternalUnsignedByteArray:
1277 return native_context->uint8_array_fun();
1278
1279 case kExternalByteArray:
1280 return native_context->int8_array_fun();
1281
1282 case kExternalUnsignedShortArray:
1283 return native_context->uint16_array_fun();
1284
1285 case kExternalShortArray:
1286 return native_context->int16_array_fun();
1287
1288 case kExternalUnsignedIntArray:
1289 return native_context->uint32_array_fun();
1290
1291 case kExternalIntArray:
1292 return native_context->int32_array_fun();
1293
1294 case kExternalFloatArray:
1295 return native_context->float_array_fun();
1296
1297 case kExternalDoubleArray:
1298 return native_context->double_array_fun();
1299
1300 case kExternalPixelArray:
1301 return native_context->uint8c_array_fun();
1302
1303 default:
1304 UNREACHABLE();
1305 return NULL;
1306 }
1307 }
1308
1309
NewJSTypedArray(ExternalArrayType type)1310 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) {
1311 Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate()));
1312
1313 CALL_HEAP_FUNCTION(
1314 isolate(),
1315 isolate()->heap()->AllocateJSObject(*typed_array_fun_handle),
1316 JSTypedArray);
1317 }
1318
1319
NewJSProxy(Handle<Object> handler,Handle<Object> prototype)1320 Handle<JSProxy> Factory::NewJSProxy(Handle<Object> handler,
1321 Handle<Object> prototype) {
1322 CALL_HEAP_FUNCTION(
1323 isolate(),
1324 isolate()->heap()->AllocateJSProxy(*handler, *prototype),
1325 JSProxy);
1326 }
1327
1328
BecomeJSObject(Handle<JSReceiver> object)1329 void Factory::BecomeJSObject(Handle<JSReceiver> object) {
1330 CALL_HEAP_FUNCTION_VOID(
1331 isolate(),
1332 isolate()->heap()->ReinitializeJSReceiver(
1333 *object, JS_OBJECT_TYPE, JSObject::kHeaderSize));
1334 }
1335
1336
BecomeJSFunction(Handle<JSReceiver> object)1337 void Factory::BecomeJSFunction(Handle<JSReceiver> object) {
1338 CALL_HEAP_FUNCTION_VOID(
1339 isolate(),
1340 isolate()->heap()->ReinitializeJSReceiver(
1341 *object, JS_FUNCTION_TYPE, JSFunction::kSize));
1342 }
1343
1344
NewSharedFunctionInfo(Handle<String> name,int number_of_literals,bool is_generator,Handle<Code> code,Handle<ScopeInfo> scope_info)1345 Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
1346 Handle<String> name,
1347 int number_of_literals,
1348 bool is_generator,
1349 Handle<Code> code,
1350 Handle<ScopeInfo> scope_info) {
1351 Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo(name);
1352 shared->set_code(*code);
1353 shared->set_scope_info(*scope_info);
1354 int literals_array_size = number_of_literals;
1355 // If the function contains object, regexp or array literals,
1356 // allocate extra space for a literals array prefix containing the
1357 // context.
1358 if (number_of_literals > 0) {
1359 literals_array_size += JSFunction::kLiteralsPrefixSize;
1360 }
1361 shared->set_num_literals(literals_array_size);
1362 if (is_generator) {
1363 shared->set_instance_class_name(isolate()->heap()->Generator_string());
1364 shared->DisableOptimization(kGenerator);
1365 }
1366 return shared;
1367 }
1368
1369
NewJSMessageObject(Handle<String> type,Handle<JSArray> arguments,int start_position,int end_position,Handle<Object> script,Handle<Object> stack_trace,Handle<Object> stack_frames)1370 Handle<JSMessageObject> Factory::NewJSMessageObject(
1371 Handle<String> type,
1372 Handle<JSArray> arguments,
1373 int start_position,
1374 int end_position,
1375 Handle<Object> script,
1376 Handle<Object> stack_trace,
1377 Handle<Object> stack_frames) {
1378 CALL_HEAP_FUNCTION(isolate(),
1379 isolate()->heap()->AllocateJSMessageObject(*type,
1380 *arguments,
1381 start_position,
1382 end_position,
1383 *script,
1384 *stack_trace,
1385 *stack_frames),
1386 JSMessageObject);
1387 }
1388
1389
NewSharedFunctionInfo(Handle<String> name)1390 Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(Handle<String> name) {
1391 CALL_HEAP_FUNCTION(isolate(),
1392 isolate()->heap()->AllocateSharedFunctionInfo(*name),
1393 SharedFunctionInfo);
1394 }
1395
1396
NumberToString(Handle<Object> number)1397 Handle<String> Factory::NumberToString(Handle<Object> number) {
1398 CALL_HEAP_FUNCTION(isolate(),
1399 isolate()->heap()->NumberToString(*number), String);
1400 }
1401
1402
Uint32ToString(uint32_t value)1403 Handle<String> Factory::Uint32ToString(uint32_t value) {
1404 CALL_HEAP_FUNCTION(isolate(),
1405 isolate()->heap()->Uint32ToString(value), String);
1406 }
1407
1408
DictionaryAtNumberPut(Handle<SeededNumberDictionary> dictionary,uint32_t key,Handle<Object> value)1409 Handle<SeededNumberDictionary> Factory::DictionaryAtNumberPut(
1410 Handle<SeededNumberDictionary> dictionary,
1411 uint32_t key,
1412 Handle<Object> value) {
1413 CALL_HEAP_FUNCTION(isolate(),
1414 dictionary->AtNumberPut(key, *value),
1415 SeededNumberDictionary);
1416 }
1417
1418
DictionaryAtNumberPut(Handle<UnseededNumberDictionary> dictionary,uint32_t key,Handle<Object> value)1419 Handle<UnseededNumberDictionary> Factory::DictionaryAtNumberPut(
1420 Handle<UnseededNumberDictionary> dictionary,
1421 uint32_t key,
1422 Handle<Object> value) {
1423 CALL_HEAP_FUNCTION(isolate(),
1424 dictionary->AtNumberPut(key, *value),
1425 UnseededNumberDictionary);
1426 }
1427
1428
NewFunctionHelper(Handle<String> name,Handle<Object> prototype)1429 Handle<JSFunction> Factory::NewFunctionHelper(Handle<String> name,
1430 Handle<Object> prototype) {
1431 Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name);
1432 CALL_HEAP_FUNCTION(
1433 isolate(),
1434 isolate()->heap()->AllocateFunction(*isolate()->function_map(),
1435 *function_share,
1436 *prototype),
1437 JSFunction);
1438 }
1439
1440
NewFunction(Handle<String> name,Handle<Object> prototype)1441 Handle<JSFunction> Factory::NewFunction(Handle<String> name,
1442 Handle<Object> prototype) {
1443 Handle<JSFunction> fun = NewFunctionHelper(name, prototype);
1444 fun->set_context(isolate()->context()->native_context());
1445 return fun;
1446 }
1447
1448
NewFunctionWithoutPrototypeHelper(Handle<String> name,LanguageMode language_mode)1449 Handle<JSFunction> Factory::NewFunctionWithoutPrototypeHelper(
1450 Handle<String> name,
1451 LanguageMode language_mode) {
1452 Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name);
1453 Handle<Map> map = (language_mode == CLASSIC_MODE)
1454 ? isolate()->function_without_prototype_map()
1455 : isolate()->strict_mode_function_without_prototype_map();
1456 CALL_HEAP_FUNCTION(isolate(),
1457 isolate()->heap()->AllocateFunction(
1458 *map,
1459 *function_share,
1460 *the_hole_value()),
1461 JSFunction);
1462 }
1463
1464
NewFunctionWithoutPrototype(Handle<String> name,LanguageMode language_mode)1465 Handle<JSFunction> Factory::NewFunctionWithoutPrototype(
1466 Handle<String> name,
1467 LanguageMode language_mode) {
1468 Handle<JSFunction> fun =
1469 NewFunctionWithoutPrototypeHelper(name, language_mode);
1470 fun->set_context(isolate()->context()->native_context());
1471 return fun;
1472 }
1473
1474
ToObject(Handle<Object> object)1475 Handle<Object> Factory::ToObject(Handle<Object> object) {
1476 CALL_HEAP_FUNCTION(isolate(), object->ToObject(isolate()), Object);
1477 }
1478
1479
ToObject(Handle<Object> object,Handle<Context> native_context)1480 Handle<Object> Factory::ToObject(Handle<Object> object,
1481 Handle<Context> native_context) {
1482 CALL_HEAP_FUNCTION(isolate(), object->ToObject(*native_context), Object);
1483 }
1484
1485
1486 #ifdef ENABLE_DEBUGGER_SUPPORT
NewDebugInfo(Handle<SharedFunctionInfo> shared)1487 Handle<DebugInfo> Factory::NewDebugInfo(Handle<SharedFunctionInfo> shared) {
1488 // Get the original code of the function.
1489 Handle<Code> code(shared->code());
1490
1491 // Create a copy of the code before allocating the debug info object to avoid
1492 // allocation while setting up the debug info object.
1493 Handle<Code> original_code(*Factory::CopyCode(code));
1494
1495 // Allocate initial fixed array for active break points before allocating the
1496 // debug info object to avoid allocation while setting up the debug info
1497 // object.
1498 Handle<FixedArray> break_points(
1499 NewFixedArray(Debug::kEstimatedNofBreakPointsInFunction));
1500
1501 // Create and set up the debug info object. Debug info contains function, a
1502 // copy of the original code, the executing code and initial fixed array for
1503 // active break points.
1504 Handle<DebugInfo> debug_info =
1505 Handle<DebugInfo>::cast(NewStruct(DEBUG_INFO_TYPE));
1506 debug_info->set_shared(*shared);
1507 debug_info->set_original_code(*original_code);
1508 debug_info->set_code(*code);
1509 debug_info->set_break_points(*break_points);
1510
1511 // Link debug info to function.
1512 shared->set_debug_info(*debug_info);
1513
1514 return debug_info;
1515 }
1516 #endif
1517
1518
NewArgumentsObject(Handle<Object> callee,int length)1519 Handle<JSObject> Factory::NewArgumentsObject(Handle<Object> callee,
1520 int length) {
1521 CALL_HEAP_FUNCTION(
1522 isolate(),
1523 isolate()->heap()->AllocateArgumentsObject(*callee, length), JSObject);
1524 }
1525
1526
CreateApiFunction(Handle<FunctionTemplateInfo> obj,ApiInstanceType instance_type)1527 Handle<JSFunction> Factory::CreateApiFunction(
1528 Handle<FunctionTemplateInfo> obj, ApiInstanceType instance_type) {
1529 Handle<Code> code = isolate()->builtins()->HandleApiCall();
1530 Handle<Code> construct_stub = isolate()->builtins()->JSConstructStubApi();
1531
1532 int internal_field_count = 0;
1533 if (!obj->instance_template()->IsUndefined()) {
1534 Handle<ObjectTemplateInfo> instance_template =
1535 Handle<ObjectTemplateInfo>(
1536 ObjectTemplateInfo::cast(obj->instance_template()));
1537 internal_field_count =
1538 Smi::cast(instance_template->internal_field_count())->value();
1539 }
1540
1541 // TODO(svenpanne) Kill ApiInstanceType and refactor things by generalizing
1542 // JSObject::GetHeaderSize.
1543 int instance_size = kPointerSize * internal_field_count;
1544 InstanceType type;
1545 switch (instance_type) {
1546 case JavaScriptObject:
1547 type = JS_OBJECT_TYPE;
1548 instance_size += JSObject::kHeaderSize;
1549 break;
1550 case InnerGlobalObject:
1551 type = JS_GLOBAL_OBJECT_TYPE;
1552 instance_size += JSGlobalObject::kSize;
1553 break;
1554 case OuterGlobalObject:
1555 type = JS_GLOBAL_PROXY_TYPE;
1556 instance_size += JSGlobalProxy::kSize;
1557 break;
1558 default:
1559 UNREACHABLE();
1560 type = JS_OBJECT_TYPE; // Keep the compiler happy.
1561 break;
1562 }
1563
1564 Handle<JSFunction> result =
1565 NewFunction(Factory::empty_string(),
1566 type,
1567 instance_size,
1568 code,
1569 true);
1570
1571 // Set length.
1572 result->shared()->set_length(obj->length());
1573
1574 // Set class name.
1575 Handle<Object> class_name = Handle<Object>(obj->class_name(), isolate());
1576 if (class_name->IsString()) {
1577 result->shared()->set_instance_class_name(*class_name);
1578 result->shared()->set_name(*class_name);
1579 }
1580
1581 Handle<Map> map = Handle<Map>(result->initial_map());
1582
1583 // Mark as undetectable if needed.
1584 if (obj->undetectable()) {
1585 map->set_is_undetectable();
1586 }
1587
1588 // Mark as hidden for the __proto__ accessor if needed.
1589 if (obj->hidden_prototype()) {
1590 map->set_is_hidden_prototype();
1591 }
1592
1593 // Mark as needs_access_check if needed.
1594 if (obj->needs_access_check()) {
1595 map->set_is_access_check_needed(true);
1596 }
1597
1598 // Set interceptor information in the map.
1599 if (!obj->named_property_handler()->IsUndefined()) {
1600 map->set_has_named_interceptor();
1601 }
1602 if (!obj->indexed_property_handler()->IsUndefined()) {
1603 map->set_has_indexed_interceptor();
1604 }
1605
1606 // Set instance call-as-function information in the map.
1607 if (!obj->instance_call_handler()->IsUndefined()) {
1608 map->set_has_instance_call_handler();
1609 }
1610
1611 result->shared()->set_function_data(*obj);
1612 result->shared()->set_construct_stub(*construct_stub);
1613 result->shared()->DontAdaptArguments();
1614
1615 // Recursively copy parent instance templates' accessors,
1616 // 'data' may be modified.
1617 int max_number_of_additional_properties = 0;
1618 int max_number_of_static_properties = 0;
1619 FunctionTemplateInfo* info = *obj;
1620 while (true) {
1621 if (!info->instance_template()->IsUndefined()) {
1622 Object* props =
1623 ObjectTemplateInfo::cast(
1624 info->instance_template())->property_accessors();
1625 if (!props->IsUndefined()) {
1626 Handle<Object> props_handle(props, isolate());
1627 NeanderArray props_array(props_handle);
1628 max_number_of_additional_properties += props_array.length();
1629 }
1630 }
1631 if (!info->property_accessors()->IsUndefined()) {
1632 Object* props = info->property_accessors();
1633 if (!props->IsUndefined()) {
1634 Handle<Object> props_handle(props, isolate());
1635 NeanderArray props_array(props_handle);
1636 max_number_of_static_properties += props_array.length();
1637 }
1638 }
1639 Object* parent = info->parent_template();
1640 if (parent->IsUndefined()) break;
1641 info = FunctionTemplateInfo::cast(parent);
1642 }
1643
1644 Map::EnsureDescriptorSlack(map, max_number_of_additional_properties);
1645
1646 // Use a temporary FixedArray to acculumate static accessors
1647 int valid_descriptors = 0;
1648 Handle<FixedArray> array;
1649 if (max_number_of_static_properties > 0) {
1650 array = NewFixedArray(max_number_of_static_properties);
1651 }
1652
1653 while (true) {
1654 // Install instance descriptors
1655 if (!obj->instance_template()->IsUndefined()) {
1656 Handle<ObjectTemplateInfo> instance =
1657 Handle<ObjectTemplateInfo>(
1658 ObjectTemplateInfo::cast(obj->instance_template()), isolate());
1659 Handle<Object> props = Handle<Object>(instance->property_accessors(),
1660 isolate());
1661 if (!props->IsUndefined()) {
1662 Map::AppendCallbackDescriptors(map, props);
1663 }
1664 }
1665 // Accumulate static accessors
1666 if (!obj->property_accessors()->IsUndefined()) {
1667 Handle<Object> props = Handle<Object>(obj->property_accessors(),
1668 isolate());
1669 valid_descriptors =
1670 AccessorInfo::AppendUnique(props, array, valid_descriptors);
1671 }
1672 // Climb parent chain
1673 Handle<Object> parent = Handle<Object>(obj->parent_template(), isolate());
1674 if (parent->IsUndefined()) break;
1675 obj = Handle<FunctionTemplateInfo>::cast(parent);
1676 }
1677
1678 // Install accumulated static accessors
1679 for (int i = 0; i < valid_descriptors; i++) {
1680 Handle<AccessorInfo> accessor(AccessorInfo::cast(array->get(i)));
1681 JSObject::SetAccessor(result, accessor);
1682 }
1683
1684 ASSERT(result->shared()->IsApiFunction());
1685 return result;
1686 }
1687
1688
NewMapCache(int at_least_space_for)1689 Handle<MapCache> Factory::NewMapCache(int at_least_space_for) {
1690 CALL_HEAP_FUNCTION(isolate(),
1691 MapCache::Allocate(isolate()->heap(),
1692 at_least_space_for),
1693 MapCache);
1694 }
1695
1696
UpdateMapCacheWith(Context * context,FixedArray * keys,Map * map)1697 MUST_USE_RESULT static MaybeObject* UpdateMapCacheWith(Context* context,
1698 FixedArray* keys,
1699 Map* map) {
1700 Object* result;
1701 { MaybeObject* maybe_result =
1702 MapCache::cast(context->map_cache())->Put(keys, map);
1703 if (!maybe_result->ToObject(&result)) return maybe_result;
1704 }
1705 context->set_map_cache(MapCache::cast(result));
1706 return result;
1707 }
1708
1709
AddToMapCache(Handle<Context> context,Handle<FixedArray> keys,Handle<Map> map)1710 Handle<MapCache> Factory::AddToMapCache(Handle<Context> context,
1711 Handle<FixedArray> keys,
1712 Handle<Map> map) {
1713 CALL_HEAP_FUNCTION(isolate(),
1714 UpdateMapCacheWith(*context, *keys, *map), MapCache);
1715 }
1716
1717
ObjectLiteralMapFromCache(Handle<Context> context,Handle<FixedArray> keys)1718 Handle<Map> Factory::ObjectLiteralMapFromCache(Handle<Context> context,
1719 Handle<FixedArray> keys) {
1720 if (context->map_cache()->IsUndefined()) {
1721 // Allocate the new map cache for the native context.
1722 Handle<MapCache> new_cache = NewMapCache(24);
1723 context->set_map_cache(*new_cache);
1724 }
1725 // Check to see whether there is a matching element in the cache.
1726 Handle<MapCache> cache =
1727 Handle<MapCache>(MapCache::cast(context->map_cache()));
1728 Handle<Object> result = Handle<Object>(cache->Lookup(*keys), isolate());
1729 if (result->IsMap()) return Handle<Map>::cast(result);
1730 // Create a new map and add it to the cache.
1731 Handle<Map> map =
1732 CopyMap(Handle<Map>(context->object_function()->initial_map()),
1733 keys->length());
1734 AddToMapCache(context, keys, map);
1735 return Handle<Map>(map);
1736 }
1737
1738
SetRegExpAtomData(Handle<JSRegExp> regexp,JSRegExp::Type type,Handle<String> source,JSRegExp::Flags flags,Handle<Object> data)1739 void Factory::SetRegExpAtomData(Handle<JSRegExp> regexp,
1740 JSRegExp::Type type,
1741 Handle<String> source,
1742 JSRegExp::Flags flags,
1743 Handle<Object> data) {
1744 Handle<FixedArray> store = NewFixedArray(JSRegExp::kAtomDataSize);
1745
1746 store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
1747 store->set(JSRegExp::kSourceIndex, *source);
1748 store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
1749 store->set(JSRegExp::kAtomPatternIndex, *data);
1750 regexp->set_data(*store);
1751 }
1752
SetRegExpIrregexpData(Handle<JSRegExp> regexp,JSRegExp::Type type,Handle<String> source,JSRegExp::Flags flags,int capture_count)1753 void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp,
1754 JSRegExp::Type type,
1755 Handle<String> source,
1756 JSRegExp::Flags flags,
1757 int capture_count) {
1758 Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize);
1759 Smi* uninitialized = Smi::FromInt(JSRegExp::kUninitializedValue);
1760 store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
1761 store->set(JSRegExp::kSourceIndex, *source);
1762 store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
1763 store->set(JSRegExp::kIrregexpASCIICodeIndex, uninitialized);
1764 store->set(JSRegExp::kIrregexpUC16CodeIndex, uninitialized);
1765 store->set(JSRegExp::kIrregexpASCIICodeSavedIndex, uninitialized);
1766 store->set(JSRegExp::kIrregexpUC16CodeSavedIndex, uninitialized);
1767 store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0));
1768 store->set(JSRegExp::kIrregexpCaptureCountIndex,
1769 Smi::FromInt(capture_count));
1770 regexp->set_data(*store);
1771 }
1772
1773
1774
ConfigureInstance(Handle<FunctionTemplateInfo> desc,Handle<JSObject> instance,bool * pending_exception)1775 void Factory::ConfigureInstance(Handle<FunctionTemplateInfo> desc,
1776 Handle<JSObject> instance,
1777 bool* pending_exception) {
1778 // Configure the instance by adding the properties specified by the
1779 // instance template.
1780 Handle<Object> instance_template(desc->instance_template(), isolate());
1781 if (!instance_template->IsUndefined()) {
1782 Execution::ConfigureInstance(isolate(),
1783 instance,
1784 instance_template,
1785 pending_exception);
1786 } else {
1787 *pending_exception = false;
1788 }
1789 }
1790
1791
GlobalConstantFor(Handle<String> name)1792 Handle<Object> Factory::GlobalConstantFor(Handle<String> name) {
1793 Heap* h = isolate()->heap();
1794 if (name->Equals(h->undefined_string())) return undefined_value();
1795 if (name->Equals(h->nan_string())) return nan_value();
1796 if (name->Equals(h->infinity_string())) return infinity_value();
1797 return Handle<Object>::null();
1798 }
1799
1800
ToBoolean(bool value)1801 Handle<Object> Factory::ToBoolean(bool value) {
1802 return value ? true_value() : false_value();
1803 }
1804
1805
1806 } } // namespace v8::internal
1807