blob: 483e6a632a3e6f975a9f8bee259869d5e318251a [file] [log] [blame]
// 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,
MinimumCapacity capacity_option) {
ASSERT(0 <= at_least_space_for);
CALL_HEAP_FUNCTION(isolate(),
ObjectHashTable::Allocate(isolate()->heap(),
at_least_space_for,
capacity_option),
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,
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->IsOneByteRepresentation() && second->IsOneByteRepresentation()) {
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<Symbol> Factory::NewPrivateSymbol() {
CALL_HEAP_FUNCTION(
isolate(),
isolate()->heap()->AllocatePrivateSymbol(),
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<AliasedArgumentsEntry> Factory::NewAliasedArgumentsEntry(
int aliased_context_slot) {
Handle<AliasedArgumentsEntry> entry = Handle<AliasedArgumentsEntry>::cast(
NewStruct(ALIASED_ARGUMENTS_ENTRY_TYPE));
entry->set_aliased_context_slot(aliased_context_slot);
return entry;
}
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) {
// Make sure to use globals from the function's context, since the function
// can be from a different context.
Handle<Context> native_context(function->context()->native_context());
Handle<Map> new_map;
if (function->shared()->is_generator()) {
// Generator prototypes can share maps since they don't have "constructor"
// properties.
new_map = handle(native_context->generator_object_prototype_map());
} else {
// Each function prototype gets a fresh map to avoid unwanted sharing of
// maps between prototypes of different constructors.
Handle<JSFunction> object_function(native_context->object_function());
ASSERT(object_function->has_initial_map());
new_map = Map::Copy(handle(object_function->initial_map()));
}
Handle<JSObject> prototype = NewJSObjectFromMap(new_map);
if (!function->shared()->is_generator()) {
JSObject::SetLocalPropertyIgnoreAttributes(prototype,
constructor_string(),
function,
DONT_ENUM);
}
return prototype;
}
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();
int max_extra_properties = max_instance_size_delta >> kPointerSizeLog2;
if (extra_inobject_properties > max_extra_properties) {
// 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_extra_properties;
}
// 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::EscapableHandleScope 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) {
JSFunction::EnsureHasInitialMap(constructor);
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<JSGeneratorObject> Factory::NewJSGeneratorObject(
Handle<JSFunction> function) {
ASSERT(function->shared()->is_generator());
JSFunction::EnsureHasInitialMap(function);
Handle<Map> map(function->initial_map());
ASSERT(map->instance_type() == JS_GENERATOR_OBJECT_TYPE);
CALL_HEAP_FUNCTION(
isolate(),
isolate()->heap()->AllocateJSObjectFromMap(*map),
JSGeneratorObject);
}
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