00cdc3f1a3
The abstractions have led to bugs because it looks like descriptor streams are GC safe but they are not. I have moved the descriptor stream helper functions to descriptor arrays and I find most of the code just as readable now as it was before. Review URL: http://codereview.chromium.org/149458 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2428 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
925 lines
32 KiB
C++
925 lines
32 KiB
C++
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "api.h"
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#include "debug.h"
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#include "execution.h"
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#include "factory.h"
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#include "macro-assembler.h"
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namespace v8 {
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namespace internal {
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Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) {
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ASSERT(0 <= size);
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CALL_HEAP_FUNCTION(Heap::AllocateFixedArray(size, pretenure), FixedArray);
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}
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Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size) {
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ASSERT(0 <= size);
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CALL_HEAP_FUNCTION(Heap::AllocateFixedArrayWithHoles(size), FixedArray);
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}
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Handle<StringDictionary> Factory::NewStringDictionary(int at_least_space_for) {
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ASSERT(0 <= at_least_space_for);
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CALL_HEAP_FUNCTION(StringDictionary::Allocate(at_least_space_for),
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StringDictionary);
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}
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Handle<NumberDictionary> Factory::NewNumberDictionary(int at_least_space_for) {
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ASSERT(0 <= at_least_space_for);
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CALL_HEAP_FUNCTION(NumberDictionary::Allocate(at_least_space_for),
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NumberDictionary);
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}
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Handle<DescriptorArray> Factory::NewDescriptorArray(int number_of_descriptors) {
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ASSERT(0 <= number_of_descriptors);
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CALL_HEAP_FUNCTION(DescriptorArray::Allocate(number_of_descriptors),
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DescriptorArray);
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}
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// Symbols are created in the old generation (data space).
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Handle<String> Factory::LookupSymbol(Vector<const char> string) {
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CALL_HEAP_FUNCTION(Heap::LookupSymbol(string), String);
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}
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Handle<String> Factory::NewStringFromAscii(Vector<const char> string,
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PretenureFlag pretenure) {
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CALL_HEAP_FUNCTION(Heap::AllocateStringFromAscii(string, pretenure), String);
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}
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Handle<String> Factory::NewStringFromUtf8(Vector<const char> string,
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PretenureFlag pretenure) {
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CALL_HEAP_FUNCTION(Heap::AllocateStringFromUtf8(string, pretenure), String);
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}
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Handle<String> Factory::NewStringFromTwoByte(Vector<const uc16> string) {
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CALL_HEAP_FUNCTION(Heap::AllocateStringFromTwoByte(string), String);
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}
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Handle<String> Factory::NewRawTwoByteString(int length,
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PretenureFlag pretenure) {
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CALL_HEAP_FUNCTION(Heap::AllocateRawTwoByteString(length, pretenure), String);
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}
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Handle<String> Factory::NewConsString(Handle<String> first,
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Handle<String> second) {
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CALL_HEAP_FUNCTION(Heap::AllocateConsString(*first, *second), String);
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}
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Handle<String> Factory::NewStringSlice(Handle<String> str,
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int begin,
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int end) {
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CALL_HEAP_FUNCTION(str->Slice(begin, end), String);
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}
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Handle<String> Factory::NewExternalStringFromAscii(
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ExternalAsciiString::Resource* resource) {
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CALL_HEAP_FUNCTION(Heap::AllocateExternalStringFromAscii(resource), String);
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}
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Handle<String> Factory::NewExternalStringFromTwoByte(
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ExternalTwoByteString::Resource* resource) {
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CALL_HEAP_FUNCTION(Heap::AllocateExternalStringFromTwoByte(resource), String);
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}
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Handle<Context> Factory::NewGlobalContext() {
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CALL_HEAP_FUNCTION(Heap::AllocateGlobalContext(), Context);
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}
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Handle<Context> Factory::NewFunctionContext(int length,
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Handle<JSFunction> closure) {
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CALL_HEAP_FUNCTION(Heap::AllocateFunctionContext(length, *closure), Context);
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}
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Handle<Context> Factory::NewWithContext(Handle<Context> previous,
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Handle<JSObject> extension,
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bool is_catch_context) {
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CALL_HEAP_FUNCTION(Heap::AllocateWithContext(*previous,
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*extension,
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is_catch_context),
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Context);
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}
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Handle<Struct> Factory::NewStruct(InstanceType type) {
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CALL_HEAP_FUNCTION(Heap::AllocateStruct(type), Struct);
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}
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Handle<AccessorInfo> Factory::NewAccessorInfo() {
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Handle<AccessorInfo> info =
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Handle<AccessorInfo>::cast(NewStruct(ACCESSOR_INFO_TYPE));
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info->set_flag(0); // Must clear the flag, it was initialized as undefined.
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return info;
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}
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Handle<Script> Factory::NewScript(Handle<String> source) {
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// Generate id for this script.
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int id;
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if (Heap::last_script_id()->IsUndefined()) {
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// Script ids start from one.
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id = 1;
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} else {
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// Increment id, wrap when positive smi is exhausted.
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id = Smi::cast(Heap::last_script_id())->value();
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id++;
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if (!Smi::IsValid(id)) {
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id = 0;
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}
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}
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Heap::SetLastScriptId(Smi::FromInt(id));
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// Create and initialize script object.
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Handle<Proxy> wrapper = Factory::NewProxy(0, TENURED);
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Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE));
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script->set_source(*source);
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script->set_name(Heap::undefined_value());
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script->set_id(Heap::last_script_id());
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script->set_line_offset(Smi::FromInt(0));
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script->set_column_offset(Smi::FromInt(0));
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script->set_data(Heap::undefined_value());
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script->set_context_data(Heap::undefined_value());
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script->set_type(Smi::FromInt(Script::TYPE_NORMAL));
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script->set_compilation_type(Smi::FromInt(Script::COMPILATION_TYPE_HOST));
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script->set_wrapper(*wrapper);
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script->set_line_ends(Heap::undefined_value());
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script->set_eval_from_function(Heap::undefined_value());
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script->set_eval_from_instructions_offset(Smi::FromInt(0));
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return script;
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}
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Handle<Proxy> Factory::NewProxy(Address addr, PretenureFlag pretenure) {
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CALL_HEAP_FUNCTION(Heap::AllocateProxy(addr, pretenure), Proxy);
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}
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Handle<Proxy> Factory::NewProxy(const AccessorDescriptor* desc) {
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return NewProxy((Address) desc, TENURED);
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}
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Handle<ByteArray> Factory::NewByteArray(int length, PretenureFlag pretenure) {
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ASSERT(0 <= length);
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CALL_HEAP_FUNCTION(Heap::AllocateByteArray(length, pretenure), ByteArray);
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}
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Handle<Map> Factory::NewMap(InstanceType type, int instance_size) {
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CALL_HEAP_FUNCTION(Heap::AllocateMap(type, instance_size), Map);
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}
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Handle<JSObject> Factory::NewFunctionPrototype(Handle<JSFunction> function) {
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CALL_HEAP_FUNCTION(Heap::AllocateFunctionPrototype(*function), JSObject);
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}
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Handle<Map> Factory::CopyMapDropDescriptors(Handle<Map> src) {
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CALL_HEAP_FUNCTION(src->CopyDropDescriptors(), Map);
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}
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Handle<Map> Factory::CopyMap(Handle<Map> src,
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int extra_inobject_properties) {
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Handle<Map> copy = CopyMapDropDescriptors(src);
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// Check that we do not overflow the instance size when adding the
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// extra inobject properties.
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int instance_size_delta = extra_inobject_properties * kPointerSize;
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int max_instance_size_delta =
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JSObject::kMaxInstanceSize - copy->instance_size();
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if (instance_size_delta > max_instance_size_delta) {
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// If the instance size overflows, we allocate as many properties
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// as we can as inobject properties.
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instance_size_delta = max_instance_size_delta;
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extra_inobject_properties = max_instance_size_delta >> kPointerSizeLog2;
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}
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// Adjust the map with the extra inobject properties.
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int inobject_properties =
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copy->inobject_properties() + extra_inobject_properties;
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copy->set_inobject_properties(inobject_properties);
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copy->set_unused_property_fields(inobject_properties);
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copy->set_instance_size(copy->instance_size() + instance_size_delta);
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return copy;
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}
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Handle<Map> Factory::CopyMapDropTransitions(Handle<Map> src) {
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CALL_HEAP_FUNCTION(src->CopyDropTransitions(), Map);
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}
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Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
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CALL_HEAP_FUNCTION(array->Copy(), FixedArray);
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}
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Handle<JSFunction> Factory::BaseNewFunctionFromBoilerplate(
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Handle<JSFunction> boilerplate,
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Handle<Map> function_map) {
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ASSERT(boilerplate->IsBoilerplate());
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ASSERT(!boilerplate->has_initial_map());
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ASSERT(!boilerplate->has_prototype());
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ASSERT(boilerplate->properties() == Heap::empty_fixed_array());
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ASSERT(boilerplate->elements() == Heap::empty_fixed_array());
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CALL_HEAP_FUNCTION(Heap::AllocateFunction(*function_map,
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boilerplate->shared(),
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Heap::the_hole_value()),
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JSFunction);
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}
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Handle<JSFunction> Factory::NewFunctionFromBoilerplate(
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Handle<JSFunction> boilerplate,
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Handle<Context> context) {
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Handle<JSFunction> result =
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BaseNewFunctionFromBoilerplate(boilerplate, Top::function_map());
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result->set_context(*context);
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int number_of_literals = boilerplate->NumberOfLiterals();
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Handle<FixedArray> literals =
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Factory::NewFixedArray(number_of_literals, TENURED);
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if (number_of_literals > 0) {
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// Store the object, regexp and array functions in the literals
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// array prefix. These functions will be used when creating
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// object, regexp and array literals in this function.
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literals->set(JSFunction::kLiteralGlobalContextIndex,
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context->global_context());
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}
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result->set_literals(*literals);
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ASSERT(!result->IsBoilerplate());
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return result;
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}
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Handle<Object> Factory::NewNumber(double value,
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PretenureFlag pretenure) {
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CALL_HEAP_FUNCTION(Heap::NumberFromDouble(value, pretenure), Object);
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}
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Handle<Object> Factory::NewNumberFromInt(int value) {
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CALL_HEAP_FUNCTION(Heap::NumberFromInt32(value), Object);
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}
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Handle<Object> Factory::NewNumberFromUint(uint32_t value) {
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CALL_HEAP_FUNCTION(Heap::NumberFromUint32(value), Object);
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}
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Handle<JSObject> Factory::NewNeanderObject() {
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CALL_HEAP_FUNCTION(Heap::AllocateJSObjectFromMap(Heap::neander_map()),
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JSObject);
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}
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Handle<Object> Factory::NewTypeError(const char* type,
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Vector< Handle<Object> > args) {
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return NewError("MakeTypeError", type, args);
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}
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Handle<Object> Factory::NewTypeError(Handle<String> message) {
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return NewError("$TypeError", message);
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}
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Handle<Object> Factory::NewRangeError(const char* type,
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Vector< Handle<Object> > args) {
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return NewError("MakeRangeError", type, args);
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}
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Handle<Object> Factory::NewRangeError(Handle<String> message) {
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return NewError("$RangeError", message);
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}
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Handle<Object> Factory::NewSyntaxError(const char* type, Handle<JSArray> args) {
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return NewError("MakeSyntaxError", type, args);
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}
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Handle<Object> Factory::NewSyntaxError(Handle<String> message) {
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return NewError("$SyntaxError", message);
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}
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Handle<Object> Factory::NewReferenceError(const char* type,
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Vector< Handle<Object> > args) {
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return NewError("MakeReferenceError", type, args);
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}
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Handle<Object> Factory::NewReferenceError(Handle<String> message) {
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return NewError("$ReferenceError", message);
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}
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Handle<Object> Factory::NewError(const char* maker, const char* type,
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Vector< Handle<Object> > args) {
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v8::HandleScope scope; // Instantiate a closeable HandleScope for EscapeFrom.
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Handle<FixedArray> array = Factory::NewFixedArray(args.length());
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for (int i = 0; i < args.length(); i++) {
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array->set(i, *args[i]);
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}
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Handle<JSArray> object = Factory::NewJSArrayWithElements(array);
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Handle<Object> result = NewError(maker, type, object);
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return result.EscapeFrom(&scope);
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}
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Handle<Object> Factory::NewEvalError(const char* type,
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Vector< Handle<Object> > args) {
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return NewError("MakeEvalError", type, args);
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}
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Handle<Object> Factory::NewError(const char* type,
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Vector< Handle<Object> > args) {
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return NewError("MakeError", type, args);
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}
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Handle<Object> Factory::NewError(const char* maker,
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const char* type,
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Handle<JSArray> args) {
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Handle<String> make_str = Factory::LookupAsciiSymbol(maker);
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Handle<JSFunction> fun =
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Handle<JSFunction>(
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JSFunction::cast(
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Top::builtins()->GetProperty(*make_str)));
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Handle<Object> type_obj = Factory::LookupAsciiSymbol(type);
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Object** argv[2] = { type_obj.location(),
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Handle<Object>::cast(args).location() };
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// Invoke the JavaScript factory method. If an exception is thrown while
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// running the factory method, use the exception as the result.
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bool caught_exception;
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Handle<Object> result = Execution::TryCall(fun,
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Top::builtins(),
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2,
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argv,
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&caught_exception);
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return result;
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}
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Handle<Object> Factory::NewError(Handle<String> message) {
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return NewError("$Error", message);
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}
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Handle<Object> Factory::NewError(const char* constructor,
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Handle<String> message) {
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Handle<String> constr = Factory::LookupAsciiSymbol(constructor);
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Handle<JSFunction> fun =
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Handle<JSFunction>(
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JSFunction::cast(
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Top::builtins()->GetProperty(*constr)));
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Object** argv[1] = { Handle<Object>::cast(message).location() };
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// Invoke the JavaScript factory method. If an exception is thrown while
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// running the factory method, use the exception as the result.
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bool caught_exception;
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Handle<Object> result = Execution::TryCall(fun,
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Top::builtins(),
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1,
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argv,
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&caught_exception);
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return result;
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}
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Handle<JSFunction> Factory::NewFunction(Handle<String> name,
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InstanceType type,
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int instance_size,
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Handle<Code> code,
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bool force_initial_map) {
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// Allocate the function
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Handle<JSFunction> function = NewFunction(name, the_hole_value());
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function->set_code(*code);
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if (force_initial_map ||
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type != JS_OBJECT_TYPE ||
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instance_size != JSObject::kHeaderSize) {
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Handle<Map> initial_map = NewMap(type, instance_size);
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Handle<JSObject> prototype = NewFunctionPrototype(function);
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initial_map->set_prototype(*prototype);
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function->set_initial_map(*initial_map);
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initial_map->set_constructor(*function);
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} else {
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ASSERT(!function->has_initial_map());
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ASSERT(!function->has_prototype());
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}
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return function;
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}
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Handle<JSFunction> Factory::NewFunctionBoilerplate(Handle<String> name,
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int number_of_literals,
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bool contains_array_literal,
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Handle<Code> code) {
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Handle<JSFunction> function = NewFunctionBoilerplate(name);
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function->set_code(*code);
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int literals_array_size = number_of_literals;
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// If the function contains object, regexp or array literals,
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// allocate extra space for a literals array prefix containing the
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// object, regexp and array constructor functions.
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if (number_of_literals > 0 || contains_array_literal) {
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literals_array_size += JSFunction::kLiteralsPrefixSize;
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}
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Handle<FixedArray> literals =
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Factory::NewFixedArray(literals_array_size, TENURED);
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function->set_literals(*literals);
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ASSERT(!function->has_initial_map());
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ASSERT(!function->has_prototype());
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return function;
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}
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Handle<JSFunction> Factory::NewFunctionBoilerplate(Handle<String> name) {
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Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo(name);
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CALL_HEAP_FUNCTION(Heap::AllocateFunction(Heap::boilerplate_function_map(),
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*shared,
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Heap::the_hole_value()),
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JSFunction);
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}
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Handle<JSFunction> Factory::NewFunctionWithPrototype(Handle<String> name,
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InstanceType type,
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int instance_size,
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Handle<JSObject> prototype,
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Handle<Code> code,
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bool force_initial_map) {
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// Allocate the function
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Handle<JSFunction> function = NewFunction(name, prototype);
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function->set_code(*code);
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if (force_initial_map ||
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type != JS_OBJECT_TYPE ||
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instance_size != JSObject::kHeaderSize) {
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Handle<Map> initial_map = NewMap(type, instance_size);
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function->set_initial_map(*initial_map);
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initial_map->set_constructor(*function);
|
|
}
|
|
|
|
// Set function.prototype and give the prototype a constructor
|
|
// property that refers to the function.
|
|
SetPrototypeProperty(function, prototype);
|
|
SetProperty(prototype, Factory::constructor_symbol(), function, DONT_ENUM);
|
|
return function;
|
|
}
|
|
|
|
|
|
Handle<Code> Factory::NewCode(const CodeDesc& desc,
|
|
ZoneScopeInfo* sinfo,
|
|
Code::Flags flags,
|
|
Handle<Object> self_ref) {
|
|
CALL_HEAP_FUNCTION(Heap::CreateCode(desc, sinfo, flags, self_ref), Code);
|
|
}
|
|
|
|
|
|
Handle<Code> Factory::CopyCode(Handle<Code> code) {
|
|
CALL_HEAP_FUNCTION(Heap::CopyCode(*code), Code);
|
|
}
|
|
|
|
|
|
static inline Object* DoCopyInsert(DescriptorArray* array,
|
|
String* key,
|
|
Object* value,
|
|
PropertyAttributes attributes) {
|
|
CallbacksDescriptor desc(key, value, attributes);
|
|
Object* obj = array->CopyInsert(&desc, REMOVE_TRANSITIONS);
|
|
return obj;
|
|
}
|
|
|
|
|
|
// Allocate the new array.
|
|
Handle<DescriptorArray> Factory::CopyAppendProxyDescriptor(
|
|
Handle<DescriptorArray> array,
|
|
Handle<String> key,
|
|
Handle<Object> value,
|
|
PropertyAttributes attributes) {
|
|
CALL_HEAP_FUNCTION(DoCopyInsert(*array, *key, *value, attributes),
|
|
DescriptorArray);
|
|
}
|
|
|
|
|
|
Handle<String> Factory::SymbolFromString(Handle<String> value) {
|
|
CALL_HEAP_FUNCTION(Heap::LookupSymbol(*value), String);
|
|
}
|
|
|
|
|
|
Handle<DescriptorArray> Factory::CopyAppendCallbackDescriptors(
|
|
Handle<DescriptorArray> array,
|
|
Handle<Object> descriptors) {
|
|
v8::NeanderArray callbacks(descriptors);
|
|
int nof_callbacks = callbacks.length();
|
|
Handle<DescriptorArray> result =
|
|
NewDescriptorArray(array->number_of_descriptors() + nof_callbacks);
|
|
|
|
// Number of descriptors added to the result so far.
|
|
int descriptor_count = 0;
|
|
|
|
// Copy the descriptors from the array.
|
|
for (int i = 0; i < array->number_of_descriptors(); i++) {
|
|
if (array->GetType(i) != NULL_DESCRIPTOR) {
|
|
result->CopyFrom(descriptor_count++, *array, i);
|
|
}
|
|
}
|
|
|
|
// Number of duplicates detected.
|
|
int duplicates = 0;
|
|
|
|
// Fill in new callback descriptors. Process the callbacks from
|
|
// back to front so that the last callback with a given name takes
|
|
// precedence over previously added callbacks with that name.
|
|
for (int i = nof_callbacks - 1; i >= 0; i--) {
|
|
Handle<AccessorInfo> entry =
|
|
Handle<AccessorInfo>(AccessorInfo::cast(callbacks.get(i)));
|
|
// Ensure the key is a symbol before writing into the instance descriptor.
|
|
Handle<String> key =
|
|
SymbolFromString(Handle<String>(String::cast(entry->name())));
|
|
// Check if a descriptor with this name already exists before writing.
|
|
if (result->LinearSearch(*key, descriptor_count) ==
|
|
DescriptorArray::kNotFound) {
|
|
CallbacksDescriptor desc(*key, *entry, entry->property_attributes());
|
|
result->Set(descriptor_count, &desc);
|
|
descriptor_count++;
|
|
} else {
|
|
duplicates++;
|
|
}
|
|
}
|
|
|
|
// If duplicates were detected, allocate a result of the right size
|
|
// and transfer the elements.
|
|
if (duplicates > 0) {
|
|
int number_of_descriptors = result->number_of_descriptors() - duplicates;
|
|
Handle<DescriptorArray> new_result =
|
|
NewDescriptorArray(number_of_descriptors);
|
|
for (int i = 0; i < number_of_descriptors; i++) {
|
|
new_result->CopyFrom(i, *result, i);
|
|
}
|
|
result = new_result;
|
|
}
|
|
|
|
// Sort the result before returning.
|
|
result->Sort();
|
|
return result;
|
|
}
|
|
|
|
|
|
Handle<JSObject> Factory::NewJSObject(Handle<JSFunction> constructor,
|
|
PretenureFlag pretenure) {
|
|
CALL_HEAP_FUNCTION(Heap::AllocateJSObject(*constructor, pretenure), JSObject);
|
|
}
|
|
|
|
|
|
Handle<GlobalObject> Factory::NewGlobalObject(
|
|
Handle<JSFunction> constructor) {
|
|
CALL_HEAP_FUNCTION(Heap::AllocateGlobalObject(*constructor),
|
|
GlobalObject);
|
|
}
|
|
|
|
|
|
|
|
Handle<JSObject> Factory::NewJSObjectFromMap(Handle<Map> map) {
|
|
CALL_HEAP_FUNCTION(Heap::AllocateJSObjectFromMap(*map, NOT_TENURED),
|
|
JSObject);
|
|
}
|
|
|
|
|
|
Handle<JSArray> Factory::NewJSArray(int length,
|
|
PretenureFlag pretenure) {
|
|
Handle<JSObject> obj = NewJSObject(Top::array_function(), pretenure);
|
|
CALL_HEAP_FUNCTION(Handle<JSArray>::cast(obj)->Initialize(length), JSArray);
|
|
}
|
|
|
|
|
|
Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArray> elements,
|
|
PretenureFlag pretenure) {
|
|
Handle<JSArray> result =
|
|
Handle<JSArray>::cast(NewJSObject(Top::array_function(), pretenure));
|
|
result->SetContent(*elements);
|
|
return result;
|
|
}
|
|
|
|
|
|
Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(Handle<String> name) {
|
|
CALL_HEAP_FUNCTION(Heap::AllocateSharedFunctionInfo(*name),
|
|
SharedFunctionInfo);
|
|
}
|
|
|
|
|
|
Handle<NumberDictionary> Factory::DictionaryAtNumberPut(
|
|
Handle<NumberDictionary> dictionary,
|
|
uint32_t key,
|
|
Handle<Object> value) {
|
|
CALL_HEAP_FUNCTION(dictionary->AtNumberPut(key, *value), NumberDictionary);
|
|
}
|
|
|
|
|
|
Handle<JSFunction> Factory::NewFunctionHelper(Handle<String> name,
|
|
Handle<Object> prototype) {
|
|
Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name);
|
|
CALL_HEAP_FUNCTION(Heap::AllocateFunction(*Top::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(Top::context()->global_context());
|
|
return fun;
|
|
}
|
|
|
|
|
|
Handle<Object> Factory::ToObject(Handle<Object> object,
|
|
Handle<Context> global_context) {
|
|
CALL_HEAP_FUNCTION(object->ToObject(*global_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(
|
|
Factory::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(Factory::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(Heap::AllocateArgumentsObject(*callee, length), JSObject);
|
|
}
|
|
|
|
|
|
Handle<JSFunction> Factory::CreateApiFunction(
|
|
Handle<FunctionTemplateInfo> obj, ApiInstanceType instance_type) {
|
|
Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::HandleApiCall));
|
|
|
|
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();
|
|
}
|
|
|
|
int instance_size = kPointerSize * internal_field_count;
|
|
InstanceType type = INVALID_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:
|
|
break;
|
|
}
|
|
ASSERT(type != INVALID_TYPE);
|
|
|
|
Handle<JSFunction> result =
|
|
Factory::NewFunction(Factory::empty_symbol(),
|
|
type,
|
|
instance_size,
|
|
code,
|
|
true);
|
|
// Set class name.
|
|
Handle<Object> class_name = Handle<Object>(obj->class_name());
|
|
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()->DontAdaptArguments();
|
|
|
|
// Recursively copy parent templates' accessors, 'data' may be modified.
|
|
Handle<DescriptorArray> array =
|
|
Handle<DescriptorArray>(map->instance_descriptors());
|
|
while (true) {
|
|
Handle<Object> props = Handle<Object>(obj->property_accessors());
|
|
if (!props->IsUndefined()) {
|
|
array = Factory::CopyAppendCallbackDescriptors(array, props);
|
|
}
|
|
Handle<Object> parent = Handle<Object>(obj->parent_template());
|
|
if (parent->IsUndefined()) break;
|
|
obj = Handle<FunctionTemplateInfo>::cast(parent);
|
|
}
|
|
if (!array->IsEmpty()) {
|
|
map->set_instance_descriptors(*array);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
Handle<MapCache> Factory::NewMapCache(int at_least_space_for) {
|
|
CALL_HEAP_FUNCTION(MapCache::Allocate(at_least_space_for), MapCache);
|
|
}
|
|
|
|
|
|
static Object* UpdateMapCacheWith(Context* context,
|
|
FixedArray* keys,
|
|
Map* map) {
|
|
Object* result = MapCache::cast(context->map_cache())->Put(keys, map);
|
|
if (!result->IsFailure()) 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(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 global 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));
|
|
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);
|
|
|
|
store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
|
|
store->set(JSRegExp::kSourceIndex, *source);
|
|
store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
|
|
store->set(JSRegExp::kIrregexpASCIICodeIndex, Heap::the_hole_value());
|
|
store->set(JSRegExp::kIrregexpUC16CodeIndex, Heap::the_hole_value());
|
|
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 = Handle<Object>(desc->instance_template());
|
|
if (!instance_template->IsUndefined()) {
|
|
Execution::ConfigureInstance(instance,
|
|
instance_template,
|
|
pending_exception);
|
|
} else {
|
|
*pending_exception = false;
|
|
}
|
|
}
|
|
|
|
|
|
} } // namespace v8::internal
|