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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "config.h"
#include "JSBoundFunction.h"
#include "JSGlobalObject.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(JSBoundFunction);
ASSERT_HAS_TRIVIAL_DESTRUCTOR(JSBoundFunction);
const ClassInfo JSBoundFunction::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSBoundFunction) };
EncodedJSValue JSC_HOST_CALL boundFunctionCall(ExecState* exec)
{
JSBoundFunction* boundFunction = static_cast<JSBoundFunction*>(exec->callee());
ASSERT(isJSArray(boundFunction->boundArgs())); // Currently this is true!
JSArray* boundArgs = asArray(boundFunction->boundArgs());
MarkedArgumentBuffer args;
for (unsigned i = 0; i < boundArgs->length(); ++i)
args.append(boundArgs->getIndex(i));
for (unsigned i = 0; i < exec->argumentCount(); ++i)
args.append(exec->argument(i));
JSObject* targetFunction = boundFunction->targetFunction();
CallData callData;
CallType callType = getCallData(targetFunction, callData);
ASSERT(callType != CallTypeNone);
return JSValue::encode(call(exec, targetFunction, callType, callData, boundFunction->boundThis(), args));
}
EncodedJSValue JSC_HOST_CALL boundFunctionConstruct(ExecState* exec)
{
JSBoundFunction* boundFunction = static_cast<JSBoundFunction*>(exec->callee());
ASSERT(isJSArray(boundFunction->boundArgs())); // Currently this is true!
JSArray* boundArgs = asArray(boundFunction->boundArgs());
MarkedArgumentBuffer args;
for (unsigned i = 0; i < boundArgs->length(); ++i)
args.append(boundArgs->getIndex(i));
for (unsigned i = 0; i < exec->argumentCount(); ++i)
args.append(exec->argument(i));
JSObject* targetFunction = boundFunction->targetFunction();
ConstructData constructData;
ConstructType constructType = getConstructData(targetFunction, constructData);
ASSERT(constructType != ConstructTypeNone);
return JSValue::encode(construct(exec, targetFunction, constructType, constructData, args));
}
JSBoundFunction* JSBoundFunction::create(ExecState* exec, JSGlobalObject* globalObject, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs, int length, const Identifier& name)
{
ConstructData constructData;
ConstructType constructType = JSC::getConstructData(targetFunction, constructData);
bool canConstruct = constructType != ConstructTypeNone;
NativeExecutable* executable = exec->globalData().getHostFunction(boundFunctionCall, canConstruct ? boundFunctionConstruct : callHostFunctionAsConstructor);
JSBoundFunction* function = new (NotNull, allocateCell<JSBoundFunction>(*exec->heap())) JSBoundFunction(exec, globalObject, globalObject->boundFunctionStructure(), targetFunction, boundThis, boundArgs);
function->finishCreation(exec, executable, length, name);
return function;
}
bool JSBoundFunction::hasInstance(JSObject* object, ExecState* exec, JSValue value, JSValue)
{
JSBoundFunction* thisObject = jsCast<JSBoundFunction*>(object);
// FIXME: our instanceof implementation will have already (incorrectly) performed
// a [[Get]] of .prototype from the bound function object, which is incorrect!
// https://bugs.webkit.org/show_bug.cgi?id=68656
JSValue proto = thisObject->m_targetFunction->get(exec, exec->propertyNames().prototype);
return thisObject->m_targetFunction->methodTable()->hasInstance(thisObject->m_targetFunction.get(), exec, value, proto);
}
JSBoundFunction::JSBoundFunction(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs)
: Base(exec, globalObject, structure)
, m_targetFunction(exec->globalData(), this, targetFunction)
, m_boundThis(exec->globalData(), this, boundThis)
, m_boundArgs(exec->globalData(), this, boundArgs)
{
}
void JSBoundFunction::finishCreation(ExecState* exec, NativeExecutable* executable, int length, const Identifier& name)
{
Base::finishCreation(exec, executable, length, name);
ASSERT(inherits(&s_info));
initializeGetterSetterProperty(exec, exec->propertyNames().arguments, globalObject()->throwTypeErrorGetterSetter(exec), DontDelete | DontEnum | Accessor);
initializeGetterSetterProperty(exec, exec->propertyNames().caller, globalObject()->throwTypeErrorGetterSetter(exec), DontDelete | DontEnum | Accessor);
}
void JSBoundFunction::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
JSBoundFunction* thisObject = jsCast<JSBoundFunction*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
Base::visitChildren(thisObject, visitor);
visitor.append(&thisObject->m_targetFunction);
visitor.append(&thisObject->m_boundThis);
visitor.append(&thisObject->m_boundArgs);
}
} // namespace JSC
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