| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #include "api.h" |
| #include "debug.h" |
| #include "execution.h" |
| #include "factory.h" |
| #include "isolate-inl.h" |
| #include "macro-assembler.h" |
| #include "objects.h" |
| #include "objects-visiting.h" |
| #include "platform.h" |
| #include "scopeinfo.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| Handle<Box> Factory::NewBox(Handle<Object> value, PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateBox(*value, pretenure), |
| Box); |
| } |
| |
| |
| Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) { |
| ASSERT(0 <= size); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFixedArray(size, pretenure), |
| FixedArray); |
| } |
| |
| |
| Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size, |
| PretenureFlag pretenure) { |
| ASSERT(0 <= size); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFixedArrayWithHoles(size, pretenure), |
| FixedArray); |
| } |
| |
| |
| Handle<FixedDoubleArray> Factory::NewFixedDoubleArray(int size, |
| PretenureFlag pretenure) { |
| ASSERT(0 <= size); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateUninitializedFixedDoubleArray(size, pretenure), |
| FixedDoubleArray); |
| } |
| |
| |
| Handle<ConstantPoolArray> Factory::NewConstantPoolArray( |
| int number_of_int64_entries, |
| int number_of_ptr_entries, |
| int number_of_int32_entries) { |
| ASSERT(number_of_int64_entries > 0 || number_of_ptr_entries > 0 || |
| number_of_int32_entries > 0); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateConstantPoolArray(number_of_int64_entries, |
| number_of_ptr_entries, |
| number_of_int32_entries), |
| ConstantPoolArray); |
| } |
| |
| |
| Handle<NameDictionary> Factory::NewNameDictionary(int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION(isolate(), |
| NameDictionary::Allocate(isolate()->heap(), |
| at_least_space_for), |
| NameDictionary); |
| } |
| |
| |
| Handle<SeededNumberDictionary> Factory::NewSeededNumberDictionary( |
| int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION(isolate(), |
| SeededNumberDictionary::Allocate(isolate()->heap(), |
| at_least_space_for), |
| SeededNumberDictionary); |
| } |
| |
| |
| Handle<UnseededNumberDictionary> Factory::NewUnseededNumberDictionary( |
| int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION(isolate(), |
| UnseededNumberDictionary::Allocate(isolate()->heap(), |
| at_least_space_for), |
| UnseededNumberDictionary); |
| } |
| |
| |
| Handle<ObjectHashSet> Factory::NewObjectHashSet(int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION(isolate(), |
| ObjectHashSet::Allocate(isolate()->heap(), |
| at_least_space_for), |
| ObjectHashSet); |
| } |
| |
| |
| Handle<ObjectHashTable> Factory::NewObjectHashTable(int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION(isolate(), |
| ObjectHashTable::Allocate(isolate()->heap(), |
| at_least_space_for), |
| ObjectHashTable); |
| } |
| |
| |
| Handle<WeakHashTable> Factory::NewWeakHashTable(int at_least_space_for) { |
| ASSERT(0 <= at_least_space_for); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| WeakHashTable::Allocate(isolate()->heap(), |
| at_least_space_for, |
| WeakHashTable::USE_DEFAULT_MINIMUM_CAPACITY, |
| TENURED), |
| WeakHashTable); |
| } |
| |
| |
| Handle<DescriptorArray> Factory::NewDescriptorArray(int number_of_descriptors, |
| int slack) { |
| ASSERT(0 <= number_of_descriptors); |
| CALL_HEAP_FUNCTION(isolate(), |
| DescriptorArray::Allocate( |
| isolate(), number_of_descriptors, slack), |
| DescriptorArray); |
| } |
| |
| |
| Handle<DeoptimizationInputData> Factory::NewDeoptimizationInputData( |
| int deopt_entry_count, |
| PretenureFlag pretenure) { |
| ASSERT(deopt_entry_count > 0); |
| CALL_HEAP_FUNCTION(isolate(), |
| DeoptimizationInputData::Allocate(isolate(), |
| deopt_entry_count, |
| pretenure), |
| DeoptimizationInputData); |
| } |
| |
| |
| Handle<DeoptimizationOutputData> Factory::NewDeoptimizationOutputData( |
| int deopt_entry_count, |
| PretenureFlag pretenure) { |
| ASSERT(deopt_entry_count > 0); |
| CALL_HEAP_FUNCTION(isolate(), |
| DeoptimizationOutputData::Allocate(isolate(), |
| deopt_entry_count, |
| pretenure), |
| DeoptimizationOutputData); |
| } |
| |
| |
| Handle<AccessorPair> Factory::NewAccessorPair() { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateAccessorPair(), |
| AccessorPair); |
| } |
| |
| |
| Handle<TypeFeedbackInfo> Factory::NewTypeFeedbackInfo() { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateTypeFeedbackInfo(), |
| TypeFeedbackInfo); |
| } |
| |
| |
| // Internalized strings are created in the old generation (data space). |
| Handle<String> Factory::InternalizeUtf8String(Vector<const char> string) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeUtf8String(string), |
| String); |
| } |
| |
| |
| // Internalized strings are created in the old generation (data space). |
| Handle<String> Factory::InternalizeString(Handle<String> string) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeString(*string), |
| String); |
| } |
| |
| |
| Handle<String> Factory::InternalizeOneByteString(Vector<const uint8_t> string) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeOneByteString(string), |
| String); |
| } |
| |
| |
| Handle<String> Factory::InternalizeOneByteString( |
| Handle<SeqOneByteString> string, int from, int length) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeOneByteString( |
| string, from, length), |
| String); |
| } |
| |
| |
| Handle<String> Factory::InternalizeTwoByteString(Vector<const uc16> string) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeTwoByteString(string), |
| String); |
| } |
| |
| |
| Handle<String> Factory::NewStringFromOneByte(Vector<const uint8_t> string, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateStringFromOneByte(string, pretenure), |
| String); |
| } |
| |
| Handle<String> Factory::NewStringFromUtf8(Vector<const char> string, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateStringFromUtf8(string, pretenure), |
| String); |
| } |
| |
| |
| Handle<String> Factory::NewStringFromTwoByte(Vector<const uc16> string, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateStringFromTwoByte(string, pretenure), |
| String); |
| } |
| |
| |
| Handle<SeqOneByteString> Factory::NewRawOneByteString(int length, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateRawOneByteString(length, pretenure), |
| SeqOneByteString); |
| } |
| |
| |
| Handle<SeqTwoByteString> Factory::NewRawTwoByteString(int length, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateRawTwoByteString(length, pretenure), |
| SeqTwoByteString); |
| } |
| |
| |
| Handle<String> Factory::NewConsString(Handle<String> first, |
| Handle<String> second) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateConsString(*first, *second), |
| String); |
| } |
| |
| |
| template<typename SinkChar, typename StringType> |
| Handle<String> ConcatStringContent(Handle<StringType> result, |
| Handle<String> first, |
| Handle<String> second) { |
| DisallowHeapAllocation pointer_stays_valid; |
| SinkChar* sink = result->GetChars(); |
| String::WriteToFlat(*first, sink, 0, first->length()); |
| String::WriteToFlat(*second, sink + first->length(), 0, second->length()); |
| return result; |
| } |
| |
| |
| Handle<String> Factory::NewFlatConcatString(Handle<String> first, |
| Handle<String> second) { |
| int total_length = first->length() + second->length(); |
| if (first->IsOneByteRepresentationUnderneath() && |
| second->IsOneByteRepresentationUnderneath()) { |
| return ConcatStringContent<uint8_t>( |
| NewRawOneByteString(total_length), first, second); |
| } else { |
| return ConcatStringContent<uc16>( |
| NewRawTwoByteString(total_length), first, second); |
| } |
| } |
| |
| |
| Handle<String> Factory::NewSubString(Handle<String> str, |
| int begin, |
| int end) { |
| CALL_HEAP_FUNCTION(isolate(), |
| str->SubString(begin, end), |
| String); |
| } |
| |
| |
| Handle<String> Factory::NewProperSubString(Handle<String> str, |
| int begin, |
| int end) { |
| ASSERT(begin > 0 || end < str->length()); |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateSubString(*str, begin, end), |
| String); |
| } |
| |
| |
| Handle<String> Factory::NewExternalStringFromAscii( |
| const ExternalAsciiString::Resource* resource) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateExternalStringFromAscii(resource), |
| String); |
| } |
| |
| |
| Handle<String> Factory::NewExternalStringFromTwoByte( |
| const ExternalTwoByteString::Resource* resource) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateExternalStringFromTwoByte(resource), |
| String); |
| } |
| |
| |
| Handle<Symbol> Factory::NewSymbol() { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateSymbol(), |
| Symbol); |
| } |
| |
| |
| Handle<Context> Factory::NewNativeContext() { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateNativeContext(), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewGlobalContext(Handle<JSFunction> function, |
| Handle<ScopeInfo> scope_info) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateGlobalContext(*function, *scope_info), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewModuleContext(Handle<ScopeInfo> scope_info) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateModuleContext(*scope_info), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewFunctionContext(int length, |
| Handle<JSFunction> function) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFunctionContext(length, *function), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewCatchContext(Handle<JSFunction> function, |
| Handle<Context> previous, |
| Handle<String> name, |
| Handle<Object> thrown_object) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateCatchContext(*function, |
| *previous, |
| *name, |
| *thrown_object), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewWithContext(Handle<JSFunction> function, |
| Handle<Context> previous, |
| Handle<JSObject> extension) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateWithContext(*function, *previous, *extension), |
| Context); |
| } |
| |
| |
| Handle<Context> Factory::NewBlockContext(Handle<JSFunction> function, |
| Handle<Context> previous, |
| Handle<ScopeInfo> scope_info) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateBlockContext(*function, |
| *previous, |
| *scope_info), |
| Context); |
| } |
| |
| |
| Handle<Struct> Factory::NewStruct(InstanceType type) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateStruct(type), |
| Struct); |
| } |
| |
| |
| Handle<DeclaredAccessorDescriptor> Factory::NewDeclaredAccessorDescriptor() { |
| return Handle<DeclaredAccessorDescriptor>::cast( |
| NewStruct(DECLARED_ACCESSOR_DESCRIPTOR_TYPE)); |
| } |
| |
| |
| Handle<DeclaredAccessorInfo> Factory::NewDeclaredAccessorInfo() { |
| Handle<DeclaredAccessorInfo> info = |
| Handle<DeclaredAccessorInfo>::cast( |
| NewStruct(DECLARED_ACCESSOR_INFO_TYPE)); |
| info->set_flag(0); // Must clear the flag, it was initialized as undefined. |
| return info; |
| } |
| |
| |
| Handle<ExecutableAccessorInfo> Factory::NewExecutableAccessorInfo() { |
| Handle<ExecutableAccessorInfo> info = |
| Handle<ExecutableAccessorInfo>::cast( |
| NewStruct(EXECUTABLE_ACCESSOR_INFO_TYPE)); |
| info->set_flag(0); // Must clear the flag, it was initialized as undefined. |
| return info; |
| } |
| |
| |
| Handle<Script> Factory::NewScript(Handle<String> source) { |
| // Generate id for this script. |
| Heap* heap = isolate()->heap(); |
| int id = heap->last_script_id()->value() + 1; |
| if (!Smi::IsValid(id) || id < 0) id = 1; |
| heap->set_last_script_id(Smi::FromInt(id)); |
| |
| // Create and initialize script object. |
| Handle<Foreign> wrapper = NewForeign(0, TENURED); |
| Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE)); |
| script->set_source(*source); |
| script->set_name(heap->undefined_value()); |
| script->set_id(Smi::FromInt(id)); |
| script->set_line_offset(Smi::FromInt(0)); |
| script->set_column_offset(Smi::FromInt(0)); |
| script->set_data(heap->undefined_value()); |
| script->set_context_data(heap->undefined_value()); |
| script->set_type(Smi::FromInt(Script::TYPE_NORMAL)); |
| script->set_wrapper(*wrapper); |
| script->set_line_ends(heap->undefined_value()); |
| script->set_eval_from_shared(heap->undefined_value()); |
| script->set_eval_from_instructions_offset(Smi::FromInt(0)); |
| script->set_flags(Smi::FromInt(0)); |
| |
| return script; |
| } |
| |
| |
| Handle<Foreign> Factory::NewForeign(Address addr, PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateForeign(addr, pretenure), |
| Foreign); |
| } |
| |
| |
| Handle<Foreign> Factory::NewForeign(const AccessorDescriptor* desc) { |
| return NewForeign((Address) desc, TENURED); |
| } |
| |
| |
| Handle<ByteArray> Factory::NewByteArray(int length, PretenureFlag pretenure) { |
| ASSERT(0 <= length); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateByteArray(length, pretenure), |
| ByteArray); |
| } |
| |
| |
| Handle<ExternalArray> Factory::NewExternalArray(int length, |
| ExternalArrayType array_type, |
| void* external_pointer, |
| PretenureFlag pretenure) { |
| ASSERT(0 <= length); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateExternalArray(length, |
| array_type, |
| external_pointer, |
| pretenure), |
| ExternalArray); |
| } |
| |
| |
| Handle<Cell> Factory::NewCell(Handle<Object> value) { |
| AllowDeferredHandleDereference convert_to_cell; |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateCell(*value), |
| Cell); |
| } |
| |
| |
| Handle<PropertyCell> Factory::NewPropertyCellWithHole() { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocatePropertyCell(), |
| PropertyCell); |
| } |
| |
| |
| Handle<PropertyCell> Factory::NewPropertyCell(Handle<Object> value) { |
| AllowDeferredHandleDereference convert_to_cell; |
| Handle<PropertyCell> cell = NewPropertyCellWithHole(); |
| PropertyCell::SetValueInferType(cell, value); |
| return cell; |
| } |
| |
| |
| Handle<AllocationSite> Factory::NewAllocationSite() { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateAllocationSite(), |
| AllocationSite); |
| } |
| |
| |
| Handle<Map> Factory::NewMap(InstanceType type, |
| int instance_size, |
| ElementsKind elements_kind) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateMap(type, instance_size, elements_kind), |
| Map); |
| } |
| |
| |
| Handle<JSObject> Factory::NewFunctionPrototype(Handle<JSFunction> function) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFunctionPrototype(*function), |
| JSObject); |
| } |
| |
| |
| Handle<Map> Factory::CopyWithPreallocatedFieldDescriptors(Handle<Map> src) { |
| CALL_HEAP_FUNCTION( |
| isolate(), src->CopyWithPreallocatedFieldDescriptors(), Map); |
| } |
| |
| |
| Handle<Map> Factory::CopyMap(Handle<Map> src, |
| int extra_inobject_properties) { |
| Handle<Map> copy = CopyWithPreallocatedFieldDescriptors(src); |
| // Check that we do not overflow the instance size when adding the |
| // extra inobject properties. |
| int instance_size_delta = extra_inobject_properties * kPointerSize; |
| int max_instance_size_delta = |
| JSObject::kMaxInstanceSize - copy->instance_size(); |
| if (instance_size_delta > max_instance_size_delta) { |
| // If the instance size overflows, we allocate as many properties |
| // as we can as inobject properties. |
| instance_size_delta = max_instance_size_delta; |
| extra_inobject_properties = max_instance_size_delta >> kPointerSizeLog2; |
| } |
| // Adjust the map with the extra inobject properties. |
| int inobject_properties = |
| copy->inobject_properties() + extra_inobject_properties; |
| copy->set_inobject_properties(inobject_properties); |
| copy->set_unused_property_fields(inobject_properties); |
| copy->set_instance_size(copy->instance_size() + instance_size_delta); |
| copy->set_visitor_id(StaticVisitorBase::GetVisitorId(*copy)); |
| return copy; |
| } |
| |
| |
| Handle<Map> Factory::CopyMap(Handle<Map> src) { |
| CALL_HEAP_FUNCTION(isolate(), src->Copy(), Map); |
| } |
| |
| |
| Handle<Map> Factory::GetElementsTransitionMap( |
| Handle<JSObject> src, |
| ElementsKind elements_kind) { |
| Isolate* i = isolate(); |
| CALL_HEAP_FUNCTION(i, |
| src->GetElementsTransitionMap(i, elements_kind), |
| Map); |
| } |
| |
| |
| Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) { |
| CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedArray); |
| } |
| |
| |
| Handle<FixedArray> Factory::CopySizeFixedArray(Handle<FixedArray> array, |
| int new_length, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION(isolate(), |
| array->CopySize(new_length, pretenure), |
| FixedArray); |
| } |
| |
| |
| Handle<FixedDoubleArray> Factory::CopyFixedDoubleArray( |
| Handle<FixedDoubleArray> array) { |
| CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedDoubleArray); |
| } |
| |
| |
| Handle<ConstantPoolArray> Factory::CopyConstantPoolArray( |
| Handle<ConstantPoolArray> array) { |
| CALL_HEAP_FUNCTION(isolate(), array->Copy(), ConstantPoolArray); |
| } |
| |
| |
| Handle<JSFunction> Factory::BaseNewFunctionFromSharedFunctionInfo( |
| Handle<SharedFunctionInfo> function_info, |
| Handle<Map> function_map, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFunction(*function_map, |
| *function_info, |
| isolate()->heap()->the_hole_value(), |
| pretenure), |
| JSFunction); |
| } |
| |
| |
| static Handle<Map> MapForNewFunction(Isolate *isolate, |
| Handle<SharedFunctionInfo> function_info) { |
| Context *context = isolate->context()->native_context(); |
| int map_index = Context::FunctionMapIndex(function_info->language_mode(), |
| function_info->is_generator()); |
| return Handle<Map>(Map::cast(context->get(map_index))); |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo( |
| Handle<SharedFunctionInfo> function_info, |
| Handle<Context> context, |
| PretenureFlag pretenure) { |
| Handle<JSFunction> result = BaseNewFunctionFromSharedFunctionInfo( |
| function_info, |
| MapForNewFunction(isolate(), function_info), |
| pretenure); |
| |
| if (function_info->ic_age() != isolate()->heap()->global_ic_age()) { |
| function_info->ResetForNewContext(isolate()->heap()->global_ic_age()); |
| } |
| |
| result->set_context(*context); |
| |
| int index = function_info->SearchOptimizedCodeMap(context->native_context()); |
| if (!function_info->bound() && index < 0) { |
| int number_of_literals = function_info->num_literals(); |
| Handle<FixedArray> literals = NewFixedArray(number_of_literals, pretenure); |
| if (number_of_literals > 0) { |
| // Store the native context in the literals array prefix. This |
| // context will be used when creating object, regexp and array |
| // literals in this function. |
| literals->set(JSFunction::kLiteralNativeContextIndex, |
| context->native_context()); |
| } |
| result->set_literals(*literals); |
| } |
| |
| if (index > 0) { |
| // Caching of optimized code enabled and optimized code found. |
| function_info->InstallFromOptimizedCodeMap(*result, index); |
| return result; |
| } |
| |
| if (isolate()->use_crankshaft() && |
| FLAG_always_opt && |
| result->is_compiled() && |
| !function_info->is_toplevel() && |
| function_info->allows_lazy_compilation() && |
| !function_info->optimization_disabled() && |
| !isolate()->DebuggerHasBreakPoints()) { |
| result->MarkForLazyRecompilation(); |
| } |
| return result; |
| } |
| |
| |
| Handle<Object> Factory::NewNumber(double value, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->NumberFromDouble(value, pretenure), Object); |
| } |
| |
| |
| Handle<Object> Factory::NewNumberFromInt(int32_t value, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->NumberFromInt32(value, pretenure), Object); |
| } |
| |
| |
| Handle<Object> Factory::NewNumberFromUint(uint32_t value, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->NumberFromUint32(value, pretenure), Object); |
| } |
| |
| |
| Handle<HeapNumber> Factory::NewHeapNumber(double value, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateHeapNumber(value, pretenure), HeapNumber); |
| } |
| |
| |
| Handle<JSObject> Factory::NewNeanderObject() { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObjectFromMap( |
| isolate()->heap()->neander_map()), |
| JSObject); |
| } |
| |
| |
| Handle<Object> Factory::NewTypeError(const char* message, |
| Vector< Handle<Object> > args) { |
| return NewError("MakeTypeError", message, args); |
| } |
| |
| |
| Handle<Object> Factory::NewTypeError(Handle<String> message) { |
| return NewError("$TypeError", message); |
| } |
| |
| |
| Handle<Object> Factory::NewRangeError(const char* message, |
| Vector< Handle<Object> > args) { |
| return NewError("MakeRangeError", message, args); |
| } |
| |
| |
| Handle<Object> Factory::NewRangeError(Handle<String> message) { |
| return NewError("$RangeError", message); |
| } |
| |
| |
| Handle<Object> Factory::NewSyntaxError(const char* message, |
| Handle<JSArray> args) { |
| return NewError("MakeSyntaxError", message, args); |
| } |
| |
| |
| Handle<Object> Factory::NewSyntaxError(Handle<String> message) { |
| return NewError("$SyntaxError", message); |
| } |
| |
| |
| Handle<Object> Factory::NewReferenceError(const char* message, |
| Vector< Handle<Object> > args) { |
| return NewError("MakeReferenceError", message, args); |
| } |
| |
| |
| Handle<Object> Factory::NewReferenceError(Handle<String> message) { |
| return NewError("$ReferenceError", message); |
| } |
| |
| |
| Handle<Object> Factory::NewError(const char* maker, |
| const char* message, |
| Vector< Handle<Object> > args) { |
| // Instantiate a closeable HandleScope for EscapeFrom. |
| v8::HandleScope scope(reinterpret_cast<v8::Isolate*>(isolate())); |
| Handle<FixedArray> array = NewFixedArray(args.length()); |
| for (int i = 0; i < args.length(); i++) { |
| array->set(i, *args[i]); |
| } |
| Handle<JSArray> object = NewJSArrayWithElements(array); |
| Handle<Object> result = NewError(maker, message, object); |
| return result.EscapeFrom(&scope); |
| } |
| |
| |
| Handle<Object> Factory::NewEvalError(const char* message, |
| Vector< Handle<Object> > args) { |
| return NewError("MakeEvalError", message, args); |
| } |
| |
| |
| Handle<Object> Factory::NewError(const char* message, |
| Vector< Handle<Object> > args) { |
| return NewError("MakeError", message, args); |
| } |
| |
| |
| Handle<String> Factory::EmergencyNewError(const char* message, |
| Handle<JSArray> args) { |
| const int kBufferSize = 1000; |
| char buffer[kBufferSize]; |
| size_t space = kBufferSize; |
| char* p = &buffer[0]; |
| |
| Vector<char> v(buffer, kBufferSize); |
| OS::StrNCpy(v, message, space); |
| space -= Min(space, strlen(message)); |
| p = &buffer[kBufferSize] - space; |
| |
| for (unsigned i = 0; i < ARRAY_SIZE(args); i++) { |
| if (space > 0) { |
| *p++ = ' '; |
| space--; |
| if (space > 0) { |
| MaybeObject* maybe_arg = args->GetElement(isolate(), i); |
| Handle<String> arg_str(reinterpret_cast<String*>(maybe_arg)); |
| const char* arg = *arg_str->ToCString(); |
| Vector<char> v2(p, static_cast<int>(space)); |
| OS::StrNCpy(v2, arg, space); |
| space -= Min(space, strlen(arg)); |
| p = &buffer[kBufferSize] - space; |
| } |
| } |
| } |
| if (space > 0) { |
| *p = '\0'; |
| } else { |
| buffer[kBufferSize - 1] = '\0'; |
| } |
| Handle<String> error_string = NewStringFromUtf8(CStrVector(buffer), TENURED); |
| return error_string; |
| } |
| |
| |
| Handle<Object> Factory::NewError(const char* maker, |
| const char* message, |
| Handle<JSArray> args) { |
| Handle<String> make_str = InternalizeUtf8String(maker); |
| Handle<Object> fun_obj( |
| isolate()->js_builtins_object()->GetPropertyNoExceptionThrown(*make_str), |
| isolate()); |
| // If the builtins haven't been properly configured yet this error |
| // constructor may not have been defined. Bail out. |
| if (!fun_obj->IsJSFunction()) { |
| return EmergencyNewError(message, args); |
| } |
| Handle<JSFunction> fun = Handle<JSFunction>::cast(fun_obj); |
| Handle<Object> message_obj = InternalizeUtf8String(message); |
| Handle<Object> argv[] = { message_obj, args }; |
| |
| // Invoke the JavaScript factory method. If an exception is thrown while |
| // running the factory method, use the exception as the result. |
| bool caught_exception; |
| Handle<Object> result = Execution::TryCall(fun, |
| isolate()->js_builtins_object(), |
| ARRAY_SIZE(argv), |
| argv, |
| &caught_exception); |
| return result; |
| } |
| |
| |
| Handle<Object> Factory::NewError(Handle<String> message) { |
| return NewError("$Error", message); |
| } |
| |
| |
| Handle<Object> Factory::NewError(const char* constructor, |
| Handle<String> message) { |
| Handle<String> constr = InternalizeUtf8String(constructor); |
| Handle<JSFunction> fun = Handle<JSFunction>( |
| JSFunction::cast(isolate()->js_builtins_object()-> |
| GetPropertyNoExceptionThrown(*constr))); |
| Handle<Object> argv[] = { message }; |
| |
| // Invoke the JavaScript factory method. If an exception is thrown while |
| // running the factory method, use the exception as the result. |
| bool caught_exception; |
| Handle<Object> result = Execution::TryCall(fun, |
| isolate()->js_builtins_object(), |
| ARRAY_SIZE(argv), |
| argv, |
| &caught_exception); |
| return result; |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunction(Handle<String> name, |
| InstanceType type, |
| int instance_size, |
| Handle<Code> code, |
| bool force_initial_map) { |
| // Allocate the function |
| Handle<JSFunction> function = NewFunction(name, the_hole_value()); |
| |
| // Set up the code pointer in both the shared function info and in |
| // the function itself. |
| function->shared()->set_code(*code); |
| function->set_code(*code); |
| |
| if (force_initial_map || |
| type != JS_OBJECT_TYPE || |
| instance_size != JSObject::kHeaderSize) { |
| Handle<Map> initial_map = NewMap(type, instance_size); |
| Handle<JSObject> prototype = NewFunctionPrototype(function); |
| initial_map->set_prototype(*prototype); |
| function->set_initial_map(*initial_map); |
| initial_map->set_constructor(*function); |
| } else { |
| ASSERT(!function->has_initial_map()); |
| ASSERT(!function->has_prototype()); |
| } |
| |
| return function; |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionWithPrototype(Handle<String> name, |
| InstanceType type, |
| int instance_size, |
| Handle<JSObject> prototype, |
| Handle<Code> code, |
| bool force_initial_map) { |
| // Allocate the function. |
| Handle<JSFunction> function = NewFunction(name, prototype); |
| |
| // Set up the code pointer in both the shared function info and in |
| // the function itself. |
| function->shared()->set_code(*code); |
| function->set_code(*code); |
| |
| if (force_initial_map || |
| type != JS_OBJECT_TYPE || |
| instance_size != JSObject::kHeaderSize) { |
| Handle<Map> initial_map = NewMap(type, |
| instance_size, |
| GetInitialFastElementsKind()); |
| function->set_initial_map(*initial_map); |
| initial_map->set_constructor(*function); |
| } |
| |
| JSFunction::SetPrototype(function, prototype); |
| return function; |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionWithoutPrototype(Handle<String> name, |
| Handle<Code> code) { |
| Handle<JSFunction> function = NewFunctionWithoutPrototype(name, |
| CLASSIC_MODE); |
| function->shared()->set_code(*code); |
| function->set_code(*code); |
| ASSERT(!function->has_initial_map()); |
| ASSERT(!function->has_prototype()); |
| return function; |
| } |
| |
| |
| Handle<ScopeInfo> Factory::NewScopeInfo(int length) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateScopeInfo(length), |
| ScopeInfo); |
| } |
| |
| |
| Handle<JSObject> Factory::NewExternal(void* value) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateExternal(value), |
| JSObject); |
| } |
| |
| |
| Handle<Code> Factory::NewCode(const CodeDesc& desc, |
| Code::Flags flags, |
| Handle<Object> self_ref, |
| bool immovable, |
| bool crankshafted, |
| int prologue_offset) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->CreateCode( |
| desc, flags, self_ref, immovable, crankshafted, |
| prologue_offset), |
| Code); |
| } |
| |
| |
| Handle<Code> Factory::CopyCode(Handle<Code> code) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->CopyCode(*code), |
| Code); |
| } |
| |
| |
| Handle<Code> Factory::CopyCode(Handle<Code> code, Vector<byte> reloc_info) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->CopyCode(*code, reloc_info), |
| Code); |
| } |
| |
| |
| Handle<String> Factory::InternalizedStringFromString(Handle<String> value) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->InternalizeString(*value), String); |
| } |
| |
| |
| Handle<JSObject> Factory::NewJSObject(Handle<JSFunction> constructor, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObject(*constructor, pretenure), JSObject); |
| } |
| |
| |
| Handle<JSModule> Factory::NewJSModule(Handle<Context> context, |
| Handle<ScopeInfo> scope_info) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSModule(*context, *scope_info), JSModule); |
| } |
| |
| |
| // TODO(mstarzinger): Temporary wrapper until handlified. |
| static Handle<NameDictionary> NameDictionaryAdd(Handle<NameDictionary> dict, |
| Handle<Name> name, |
| Handle<Object> value, |
| PropertyDetails details) { |
| CALL_HEAP_FUNCTION(dict->GetIsolate(), |
| dict->Add(*name, *value, details), |
| NameDictionary); |
| } |
| |
| |
| static Handle<GlobalObject> NewGlobalObjectFromMap(Isolate* isolate, |
| Handle<Map> map) { |
| CALL_HEAP_FUNCTION(isolate, |
| isolate->heap()->Allocate(*map, OLD_POINTER_SPACE), |
| GlobalObject); |
| } |
| |
| |
| Handle<GlobalObject> Factory::NewGlobalObject(Handle<JSFunction> constructor) { |
| ASSERT(constructor->has_initial_map()); |
| Handle<Map> map(constructor->initial_map()); |
| ASSERT(map->is_dictionary_map()); |
| |
| // Make sure no field properties are described in the initial map. |
| // This guarantees us that normalizing the properties does not |
| // require us to change property values to PropertyCells. |
| ASSERT(map->NextFreePropertyIndex() == 0); |
| |
| // Make sure we don't have a ton of pre-allocated slots in the |
| // global objects. They will be unused once we normalize the object. |
| ASSERT(map->unused_property_fields() == 0); |
| ASSERT(map->inobject_properties() == 0); |
| |
| // Initial size of the backing store to avoid resize of the storage during |
| // bootstrapping. The size differs between the JS global object ad the |
| // builtins object. |
| int initial_size = map->instance_type() == JS_GLOBAL_OBJECT_TYPE ? 64 : 512; |
| |
| // Allocate a dictionary object for backing storage. |
| int at_least_space_for = map->NumberOfOwnDescriptors() * 2 + initial_size; |
| Handle<NameDictionary> dictionary = NewNameDictionary(at_least_space_for); |
| |
| // The global object might be created from an object template with accessors. |
| // Fill these accessors into the dictionary. |
| Handle<DescriptorArray> descs(map->instance_descriptors()); |
| for (int i = 0; i < map->NumberOfOwnDescriptors(); i++) { |
| PropertyDetails details = descs->GetDetails(i); |
| ASSERT(details.type() == CALLBACKS); // Only accessors are expected. |
| PropertyDetails d = PropertyDetails(details.attributes(), CALLBACKS, i + 1); |
| Handle<Name> name(descs->GetKey(i)); |
| Handle<Object> value(descs->GetCallbacksObject(i), isolate()); |
| Handle<PropertyCell> cell = NewPropertyCell(value); |
| NameDictionaryAdd(dictionary, name, cell, d); |
| } |
| |
| // Allocate the global object and initialize it with the backing store. |
| Handle<GlobalObject> global = NewGlobalObjectFromMap(isolate(), map); |
| isolate()->heap()->InitializeJSObjectFromMap(*global, *dictionary, *map); |
| |
| // Create a new map for the global object. |
| Handle<Map> new_map = Map::CopyDropDescriptors(map); |
| new_map->set_dictionary_map(true); |
| |
| // Set up the global object as a normalized object. |
| global->set_map(*new_map); |
| global->set_properties(*dictionary); |
| |
| // Make sure result is a global object with properties in dictionary. |
| ASSERT(global->IsGlobalObject() && !global->HasFastProperties()); |
| return global; |
| } |
| |
| |
| Handle<JSObject> Factory::NewJSObjectFromMap(Handle<Map> map, |
| PretenureFlag pretenure, |
| bool alloc_props) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObjectFromMap(*map, pretenure, alloc_props), |
| JSObject); |
| } |
| |
| |
| Handle<JSArray> Factory::NewJSArray(int capacity, |
| ElementsKind elements_kind, |
| PretenureFlag pretenure) { |
| if (capacity != 0) { |
| elements_kind = GetHoleyElementsKind(elements_kind); |
| } |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateJSArrayAndStorage( |
| elements_kind, |
| 0, |
| capacity, |
| INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE, |
| pretenure), |
| JSArray); |
| } |
| |
| |
| Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArrayBase> elements, |
| ElementsKind elements_kind, |
| PretenureFlag pretenure) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSArrayWithElements(*elements, |
| elements_kind, |
| elements->length(), |
| pretenure), |
| JSArray); |
| } |
| |
| |
| void Factory::SetElementsCapacityAndLength(Handle<JSArray> array, |
| int capacity, |
| int length) { |
| ElementsAccessor* accessor = array->GetElementsAccessor(); |
| CALL_HEAP_FUNCTION_VOID( |
| isolate(), |
| accessor->SetCapacityAndLength(*array, capacity, length)); |
| } |
| |
| |
| void Factory::SetContent(Handle<JSArray> array, |
| Handle<FixedArrayBase> elements) { |
| CALL_HEAP_FUNCTION_VOID( |
| isolate(), |
| array->SetContent(*elements)); |
| } |
| |
| |
| Handle<JSArrayBuffer> Factory::NewJSArrayBuffer() { |
| Handle<JSFunction> array_buffer_fun( |
| isolate()->context()->native_context()->array_buffer_fun()); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObject(*array_buffer_fun), |
| JSArrayBuffer); |
| } |
| |
| |
| Handle<JSDataView> Factory::NewJSDataView() { |
| Handle<JSFunction> data_view_fun( |
| isolate()->context()->native_context()->data_view_fun()); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObject(*data_view_fun), |
| JSDataView); |
| } |
| |
| |
| static JSFunction* GetTypedArrayFun(ExternalArrayType type, |
| Isolate* isolate) { |
| Context* native_context = isolate->context()->native_context(); |
| switch (type) { |
| case kExternalUnsignedByteArray: |
| return native_context->uint8_array_fun(); |
| |
| case kExternalByteArray: |
| return native_context->int8_array_fun(); |
| |
| case kExternalUnsignedShortArray: |
| return native_context->uint16_array_fun(); |
| |
| case kExternalShortArray: |
| return native_context->int16_array_fun(); |
| |
| case kExternalUnsignedIntArray: |
| return native_context->uint32_array_fun(); |
| |
| case kExternalIntArray: |
| return native_context->int32_array_fun(); |
| |
| case kExternalFloatArray: |
| return native_context->float_array_fun(); |
| |
| case kExternalDoubleArray: |
| return native_context->double_array_fun(); |
| |
| case kExternalPixelArray: |
| return native_context->uint8c_array_fun(); |
| |
| default: |
| UNREACHABLE(); |
| return NULL; |
| } |
| } |
| |
| |
| Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) { |
| Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate())); |
| |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSObject(*typed_array_fun_handle), |
| JSTypedArray); |
| } |
| |
| |
| Handle<JSProxy> Factory::NewJSProxy(Handle<Object> handler, |
| Handle<Object> prototype) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateJSProxy(*handler, *prototype), |
| JSProxy); |
| } |
| |
| |
| void Factory::BecomeJSObject(Handle<JSReceiver> object) { |
| CALL_HEAP_FUNCTION_VOID( |
| isolate(), |
| isolate()->heap()->ReinitializeJSReceiver( |
| *object, JS_OBJECT_TYPE, JSObject::kHeaderSize)); |
| } |
| |
| |
| void Factory::BecomeJSFunction(Handle<JSReceiver> object) { |
| CALL_HEAP_FUNCTION_VOID( |
| isolate(), |
| isolate()->heap()->ReinitializeJSReceiver( |
| *object, JS_FUNCTION_TYPE, JSFunction::kSize)); |
| } |
| |
| |
| Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo( |
| Handle<String> name, |
| int number_of_literals, |
| bool is_generator, |
| Handle<Code> code, |
| Handle<ScopeInfo> scope_info) { |
| Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo(name); |
| shared->set_code(*code); |
| shared->set_scope_info(*scope_info); |
| int literals_array_size = number_of_literals; |
| // If the function contains object, regexp or array literals, |
| // allocate extra space for a literals array prefix containing the |
| // context. |
| if (number_of_literals > 0) { |
| literals_array_size += JSFunction::kLiteralsPrefixSize; |
| } |
| shared->set_num_literals(literals_array_size); |
| if (is_generator) { |
| shared->set_instance_class_name(isolate()->heap()->Generator_string()); |
| shared->DisableOptimization(kGenerator); |
| } |
| return shared; |
| } |
| |
| |
| Handle<JSMessageObject> Factory::NewJSMessageObject( |
| Handle<String> type, |
| Handle<JSArray> arguments, |
| int start_position, |
| int end_position, |
| Handle<Object> script, |
| Handle<Object> stack_trace, |
| Handle<Object> stack_frames) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateJSMessageObject(*type, |
| *arguments, |
| start_position, |
| end_position, |
| *script, |
| *stack_trace, |
| *stack_frames), |
| JSMessageObject); |
| } |
| |
| |
| Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(Handle<String> name) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateSharedFunctionInfo(*name), |
| SharedFunctionInfo); |
| } |
| |
| |
| Handle<String> Factory::NumberToString(Handle<Object> number) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->NumberToString(*number), String); |
| } |
| |
| |
| Handle<String> Factory::Uint32ToString(uint32_t value) { |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->Uint32ToString(value), String); |
| } |
| |
| |
| Handle<SeededNumberDictionary> Factory::DictionaryAtNumberPut( |
| Handle<SeededNumberDictionary> dictionary, |
| uint32_t key, |
| Handle<Object> value) { |
| CALL_HEAP_FUNCTION(isolate(), |
| dictionary->AtNumberPut(key, *value), |
| SeededNumberDictionary); |
| } |
| |
| |
| Handle<UnseededNumberDictionary> Factory::DictionaryAtNumberPut( |
| Handle<UnseededNumberDictionary> dictionary, |
| uint32_t key, |
| Handle<Object> value) { |
| CALL_HEAP_FUNCTION(isolate(), |
| dictionary->AtNumberPut(key, *value), |
| UnseededNumberDictionary); |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionHelper(Handle<String> name, |
| Handle<Object> prototype) { |
| Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name); |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateFunction(*isolate()->function_map(), |
| *function_share, |
| *prototype), |
| JSFunction); |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunction(Handle<String> name, |
| Handle<Object> prototype) { |
| Handle<JSFunction> fun = NewFunctionHelper(name, prototype); |
| fun->set_context(isolate()->context()->native_context()); |
| return fun; |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionWithoutPrototypeHelper( |
| Handle<String> name, |
| LanguageMode language_mode) { |
| Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name); |
| Handle<Map> map = (language_mode == CLASSIC_MODE) |
| ? isolate()->function_without_prototype_map() |
| : isolate()->strict_mode_function_without_prototype_map(); |
| CALL_HEAP_FUNCTION(isolate(), |
| isolate()->heap()->AllocateFunction( |
| *map, |
| *function_share, |
| *the_hole_value()), |
| JSFunction); |
| } |
| |
| |
| Handle<JSFunction> Factory::NewFunctionWithoutPrototype( |
| Handle<String> name, |
| LanguageMode language_mode) { |
| Handle<JSFunction> fun = |
| NewFunctionWithoutPrototypeHelper(name, language_mode); |
| fun->set_context(isolate()->context()->native_context()); |
| return fun; |
| } |
| |
| |
| Handle<Object> Factory::ToObject(Handle<Object> object) { |
| CALL_HEAP_FUNCTION(isolate(), object->ToObject(isolate()), Object); |
| } |
| |
| |
| Handle<Object> Factory::ToObject(Handle<Object> object, |
| Handle<Context> native_context) { |
| CALL_HEAP_FUNCTION(isolate(), object->ToObject(*native_context), Object); |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| Handle<DebugInfo> Factory::NewDebugInfo(Handle<SharedFunctionInfo> shared) { |
| // Get the original code of the function. |
| Handle<Code> code(shared->code()); |
| |
| // Create a copy of the code before allocating the debug info object to avoid |
| // allocation while setting up the debug info object. |
| Handle<Code> original_code(*Factory::CopyCode(code)); |
| |
| // Allocate initial fixed array for active break points before allocating the |
| // debug info object to avoid allocation while setting up the debug info |
| // object. |
| Handle<FixedArray> break_points( |
| NewFixedArray(Debug::kEstimatedNofBreakPointsInFunction)); |
| |
| // Create and set up the debug info object. Debug info contains function, a |
| // copy of the original code, the executing code and initial fixed array for |
| // active break points. |
| Handle<DebugInfo> debug_info = |
| Handle<DebugInfo>::cast(NewStruct(DEBUG_INFO_TYPE)); |
| debug_info->set_shared(*shared); |
| debug_info->set_original_code(*original_code); |
| debug_info->set_code(*code); |
| debug_info->set_break_points(*break_points); |
| |
| // Link debug info to function. |
| shared->set_debug_info(*debug_info); |
| |
| return debug_info; |
| } |
| #endif |
| |
| |
| Handle<JSObject> Factory::NewArgumentsObject(Handle<Object> callee, |
| int length) { |
| CALL_HEAP_FUNCTION( |
| isolate(), |
| isolate()->heap()->AllocateArgumentsObject(*callee, length), JSObject); |
| } |
| |
| |
| Handle<JSFunction> Factory::CreateApiFunction( |
| Handle<FunctionTemplateInfo> obj, ApiInstanceType instance_type) { |
| Handle<Code> code = isolate()->builtins()->HandleApiCall(); |
| Handle<Code> construct_stub = isolate()->builtins()->JSConstructStubApi(); |
| |
| int internal_field_count = 0; |
| if (!obj->instance_template()->IsUndefined()) { |
| Handle<ObjectTemplateInfo> instance_template = |
| Handle<ObjectTemplateInfo>( |
| ObjectTemplateInfo::cast(obj->instance_template())); |
| internal_field_count = |
| Smi::cast(instance_template->internal_field_count())->value(); |
| } |
| |
| // TODO(svenpanne) Kill ApiInstanceType and refactor things by generalizing |
| // JSObject::GetHeaderSize. |
| int instance_size = kPointerSize * internal_field_count; |
| InstanceType type; |
| switch (instance_type) { |
| case JavaScriptObject: |
| type = JS_OBJECT_TYPE; |
| instance_size += JSObject::kHeaderSize; |
| break; |
| case InnerGlobalObject: |
| type = JS_GLOBAL_OBJECT_TYPE; |
| instance_size += JSGlobalObject::kSize; |
| break; |
| case OuterGlobalObject: |
| type = JS_GLOBAL_PROXY_TYPE; |
| instance_size += JSGlobalProxy::kSize; |
| break; |
| default: |
| UNREACHABLE(); |
| type = JS_OBJECT_TYPE; // Keep the compiler happy. |
| break; |
| } |
| |
| Handle<JSFunction> result = |
| NewFunction(Factory::empty_string(), |
| type, |
| instance_size, |
| code, |
| true); |
| |
| // Set length. |
| result->shared()->set_length(obj->length()); |
| |
| // Set class name. |
| Handle<Object> class_name = Handle<Object>(obj->class_name(), isolate()); |
| if (class_name->IsString()) { |
| result->shared()->set_instance_class_name(*class_name); |
| result->shared()->set_name(*class_name); |
| } |
| |
| Handle<Map> map = Handle<Map>(result->initial_map()); |
| |
| // Mark as undetectable if needed. |
| if (obj->undetectable()) { |
| map->set_is_undetectable(); |
| } |
| |
| // Mark as hidden for the __proto__ accessor if needed. |
| if (obj->hidden_prototype()) { |
| map->set_is_hidden_prototype(); |
| } |
| |
| // Mark as needs_access_check if needed. |
| if (obj->needs_access_check()) { |
| map->set_is_access_check_needed(true); |
| } |
| |
| // Set interceptor information in the map. |
| if (!obj->named_property_handler()->IsUndefined()) { |
| map->set_has_named_interceptor(); |
| } |
| if (!obj->indexed_property_handler()->IsUndefined()) { |
| map->set_has_indexed_interceptor(); |
| } |
| |
| // Set instance call-as-function information in the map. |
| if (!obj->instance_call_handler()->IsUndefined()) { |
| map->set_has_instance_call_handler(); |
| } |
| |
| result->shared()->set_function_data(*obj); |
| result->shared()->set_construct_stub(*construct_stub); |
| result->shared()->DontAdaptArguments(); |
| |
| // Recursively copy parent instance templates' accessors, |
| // 'data' may be modified. |
| int max_number_of_additional_properties = 0; |
| int max_number_of_static_properties = 0; |
| FunctionTemplateInfo* info = *obj; |
| while (true) { |
| if (!info->instance_template()->IsUndefined()) { |
| Object* props = |
| ObjectTemplateInfo::cast( |
| info->instance_template())->property_accessors(); |
| if (!props->IsUndefined()) { |
| Handle<Object> props_handle(props, isolate()); |
| NeanderArray props_array(props_handle); |
| max_number_of_additional_properties += props_array.length(); |
| } |
| } |
| if (!info->property_accessors()->IsUndefined()) { |
| Object* props = info->property_accessors(); |
| if (!props->IsUndefined()) { |
| Handle<Object> props_handle(props, isolate()); |
| NeanderArray props_array(props_handle); |
| max_number_of_static_properties += props_array.length(); |
| } |
| } |
| Object* parent = info->parent_template(); |
| if (parent->IsUndefined()) break; |
| info = FunctionTemplateInfo::cast(parent); |
| } |
| |
| Map::EnsureDescriptorSlack(map, max_number_of_additional_properties); |
| |
| // Use a temporary FixedArray to acculumate static accessors |
| int valid_descriptors = 0; |
| Handle<FixedArray> array; |
| if (max_number_of_static_properties > 0) { |
| array = NewFixedArray(max_number_of_static_properties); |
| } |
| |
| while (true) { |
| // Install instance descriptors |
| if (!obj->instance_template()->IsUndefined()) { |
| Handle<ObjectTemplateInfo> instance = |
| Handle<ObjectTemplateInfo>( |
| ObjectTemplateInfo::cast(obj->instance_template()), isolate()); |
| Handle<Object> props = Handle<Object>(instance->property_accessors(), |
| isolate()); |
| if (!props->IsUndefined()) { |
| Map::AppendCallbackDescriptors(map, props); |
| } |
| } |
| // Accumulate static accessors |
| if (!obj->property_accessors()->IsUndefined()) { |
| Handle<Object> props = Handle<Object>(obj->property_accessors(), |
| isolate()); |
| valid_descriptors = |
| AccessorInfo::AppendUnique(props, array, valid_descriptors); |
| } |
| // Climb parent chain |
| Handle<Object> parent = Handle<Object>(obj->parent_template(), isolate()); |
| if (parent->IsUndefined()) break; |
| obj = Handle<FunctionTemplateInfo>::cast(parent); |
| } |
| |
| // Install accumulated static accessors |
| for (int i = 0; i < valid_descriptors; i++) { |
| Handle<AccessorInfo> accessor(AccessorInfo::cast(array->get(i))); |
| JSObject::SetAccessor(result, accessor); |
| } |
| |
| ASSERT(result->shared()->IsApiFunction()); |
| return result; |
| } |
| |
| |
| Handle<MapCache> Factory::NewMapCache(int at_least_space_for) { |
| CALL_HEAP_FUNCTION(isolate(), |
| MapCache::Allocate(isolate()->heap(), |
| at_least_space_for), |
| MapCache); |
| } |
| |
| |
| MUST_USE_RESULT static MaybeObject* UpdateMapCacheWith(Context* context, |
| FixedArray* keys, |
| Map* map) { |
| Object* result; |
| { MaybeObject* maybe_result = |
| MapCache::cast(context->map_cache())->Put(keys, map); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| context->set_map_cache(MapCache::cast(result)); |
| return result; |
| } |
| |
| |
| Handle<MapCache> Factory::AddToMapCache(Handle<Context> context, |
| Handle<FixedArray> keys, |
| Handle<Map> map) { |
| CALL_HEAP_FUNCTION(isolate(), |
| UpdateMapCacheWith(*context, *keys, *map), MapCache); |
| } |
| |
| |
| Handle<Map> Factory::ObjectLiteralMapFromCache(Handle<Context> context, |
| Handle<FixedArray> keys) { |
| if (context->map_cache()->IsUndefined()) { |
| // Allocate the new map cache for the native context. |
| Handle<MapCache> new_cache = NewMapCache(24); |
| context->set_map_cache(*new_cache); |
| } |
| // Check to see whether there is a matching element in the cache. |
| Handle<MapCache> cache = |
| Handle<MapCache>(MapCache::cast(context->map_cache())); |
| Handle<Object> result = Handle<Object>(cache->Lookup(*keys), isolate()); |
| if (result->IsMap()) return Handle<Map>::cast(result); |
| // Create a new map and add it to the cache. |
| Handle<Map> map = |
| CopyMap(Handle<Map>(context->object_function()->initial_map()), |
| keys->length()); |
| AddToMapCache(context, keys, map); |
| return Handle<Map>(map); |
| } |
| |
| |
| void Factory::SetRegExpAtomData(Handle<JSRegExp> regexp, |
| JSRegExp::Type type, |
| Handle<String> source, |
| JSRegExp::Flags flags, |
| Handle<Object> data) { |
| Handle<FixedArray> store = NewFixedArray(JSRegExp::kAtomDataSize); |
| |
| store->set(JSRegExp::kTagIndex, Smi::FromInt(type)); |
| store->set(JSRegExp::kSourceIndex, *source); |
| store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value())); |
| store->set(JSRegExp::kAtomPatternIndex, *data); |
| regexp->set_data(*store); |
| } |
| |
| void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp, |
| JSRegExp::Type type, |
| Handle<String> source, |
| JSRegExp::Flags flags, |
| int capture_count) { |
| Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize); |
| Smi* uninitialized = Smi::FromInt(JSRegExp::kUninitializedValue); |
| store->set(JSRegExp::kTagIndex, Smi::FromInt(type)); |
| store->set(JSRegExp::kSourceIndex, *source); |
| store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value())); |
| store->set(JSRegExp::kIrregexpASCIICodeIndex, uninitialized); |
| store->set(JSRegExp::kIrregexpUC16CodeIndex, uninitialized); |
| store->set(JSRegExp::kIrregexpASCIICodeSavedIndex, uninitialized); |
| store->set(JSRegExp::kIrregexpUC16CodeSavedIndex, uninitialized); |
| store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0)); |
| store->set(JSRegExp::kIrregexpCaptureCountIndex, |
| Smi::FromInt(capture_count)); |
| regexp->set_data(*store); |
| } |
| |
| |
| |
| void Factory::ConfigureInstance(Handle<FunctionTemplateInfo> desc, |
| Handle<JSObject> instance, |
| bool* pending_exception) { |
| // Configure the instance by adding the properties specified by the |
| // instance template. |
| Handle<Object> instance_template(desc->instance_template(), isolate()); |
| if (!instance_template->IsUndefined()) { |
| Execution::ConfigureInstance(isolate(), |
| instance, |
| instance_template, |
| pending_exception); |
| } else { |
| *pending_exception = false; |
| } |
| } |
| |
| |
| Handle<Object> Factory::GlobalConstantFor(Handle<String> name) { |
| Heap* h = isolate()->heap(); |
| if (name->Equals(h->undefined_string())) return undefined_value(); |
| if (name->Equals(h->nan_string())) return nan_value(); |
| if (name->Equals(h->infinity_string())) return infinity_value(); |
| return Handle<Object>::null(); |
| } |
| |
| |
| Handle<Object> Factory::ToBoolean(bool value) { |
| return value ? true_value() : false_value(); |
| } |
| |
| |
| } } // namespace v8::internal |
