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/*
* Copyright (C) 2003, 2008 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 COMPUTER, 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 COMPUTER, 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 "runtime_method.h"
#include "JSDOMBinding.h"
#include "JSHTMLElement.h"
#include "JSPluginElementFunctions.h"
#include "runtime_object.h"
#include <runtime/Error.h>
#include <runtime/FunctionPrototype.h>
using namespace WebCore;
namespace JSC {
using namespace Bindings;
ASSERT_CLASS_FITS_IN_CELL(RuntimeMethod);
const ClassInfo RuntimeMethod::s_info = { "RuntimeMethod", &InternalFunction::s_info, 0, 0, CREATE_METHOD_TABLE(RuntimeMethod) };
RuntimeMethod::RuntimeMethod(JSGlobalObject* globalObject, Structure* structure, Bindings::MethodList& m)
// Callers will need to pass in the right global object corresponding to this native object "m".
: InternalFunction(globalObject, structure)
, _methodList(adoptPtr(new MethodList(m)))
{
}
void RuntimeMethod::destroy(JSCell* cell)
{
jsCast<RuntimeMethod*>(cell)->RuntimeMethod::~RuntimeMethod();
}
void RuntimeMethod::finishCreation(JSGlobalData& globalData, const Identifier& ident)
{
Base::finishCreation(globalData, ident);
ASSERT(inherits(&s_info));
}
JSValue RuntimeMethod::lengthGetter(ExecState*, JSValue slotBase, const Identifier&)
{
RuntimeMethod* thisObj = static_cast<RuntimeMethod*>(asObject(slotBase));
// Ick! There may be more than one method with this name. Arbitrarily
// just pick the first method. The fundamental problem here is that
// JavaScript doesn't have the notion of method overloading and
// Java does.
// FIXME: a better solution might be to give the maximum number of parameters
// of any method
return jsNumber(thisObj->_methodList->at(0)->numParameters());
}
bool RuntimeMethod::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
{
RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(cell);
if (propertyName == exec->propertyNames().length) {
slot.setCacheableCustom(thisObject, thisObject->lengthGetter);
return true;
}
return InternalFunction::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
bool RuntimeMethod::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor &descriptor)
{
RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(object);
if (propertyName == exec->propertyNames().length) {
PropertySlot slot;
slot.setCustom(thisObject, lengthGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return InternalFunction::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
static EncodedJSValue JSC_HOST_CALL callRuntimeMethod(ExecState* exec)
{
RuntimeMethod* method = static_cast<RuntimeMethod*>(exec->callee());
if (method->methods()->isEmpty())
return JSValue::encode(jsUndefined());
RefPtr<Instance> instance;
JSValue thisValue = exec->hostThisValue();
if (thisValue.inherits(&RuntimeObject::s_info)) {
RuntimeObject* runtimeObject = static_cast<RuntimeObject*>(asObject(thisValue));
instance = runtimeObject->getInternalInstance();
if (!instance)
return JSValue::encode(RuntimeObject::throwInvalidAccessError(exec));
} else {
// Calling a runtime object of a plugin element?
if (thisValue.inherits(&JSHTMLElement::s_info)) {
HTMLElement* element = static_cast<JSHTMLElement*>(asObject(thisValue))->impl();
instance = pluginInstance(element);
}
if (!instance)
return throwVMTypeError(exec);
}
ASSERT(instance);
instance->begin();
JSValue result = instance->invokeMethod(exec, method);
instance->end();
return JSValue::encode(result);
}
CallType RuntimeMethod::getCallData(JSCell*, CallData& callData)
{
callData.native.function = callRuntimeMethod;
return CallTypeHost;
}
}
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