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runtime_method.cpp
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120 lines (99 loc) · 4.52 KB
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/*
* Copyright (C) 2003-2022 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 "runtime_method.h"
#include "JSDOMBinding.h"
#include "JSHTMLElement.h"
#include "JSPluginElementFunctions.h"
#include "WebCoreJSClientData.h"
#include "runtime_object.h"
#include <JavaScriptCore/Error.h>
#include <JavaScriptCore/FunctionPrototype.h>
#include <JavaScriptCore/JSGlobalObjectInlines.h>
using namespace WebCore;
namespace JSC {
using namespace Bindings;
WEBCORE_EXPORT const ClassInfo RuntimeMethod::s_info = { "RuntimeMethod"_s, &InternalFunction::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(RuntimeMethod) };
static JSC_DECLARE_HOST_FUNCTION(callRuntimeMethod);
static JSC_DECLARE_CUSTOM_GETTER(methodLengthGetter);
RuntimeMethod::RuntimeMethod(VM& vm, Structure* structure, Method* method)
// Callers will need to pass in the right global object corresponding to this native object "method".
: InternalFunction(vm, structure, callRuntimeMethod, nullptr)
, m_method(method)
{
}
void RuntimeMethod::finishCreation(VM& vm, const String& ident)
{
Base::finishCreation(vm, 0, ident);
ASSERT(inherits(info()));
}
JSC_DEFINE_CUSTOM_GETTER(methodLengthGetter, (JSGlobalObject* exec, EncodedJSValue thisValue, PropertyName))
{
auto scope = DECLARE_THROW_SCOPE(exec->vm());
RuntimeMethod* thisObject = jsDynamicCast<RuntimeMethod*>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(exec, scope);
return JSValue::encode(jsNumber(thisObject->method()->numParameters()));
}
bool RuntimeMethod::getOwnPropertySlot(JSObject* object, JSGlobalObject* exec, PropertyName propertyName, PropertySlot &slot)
{
Ref vm = exec->vm();
RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(object);
if (propertyName == vm->propertyNames->length) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, methodLengthGetter);
return true;
}
return InternalFunction::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
GCClient::IsoSubspace* RuntimeMethod::subspaceForImpl(VM& vm)
{
return &downcast<JSVMClientData>(vm.clientData)->runtimeMethodSpace();
}
JSC_DEFINE_HOST_FUNCTION(callRuntimeMethod, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
auto* method = jsCast<RuntimeMethod*>(callFrame->jsCallee());
if (!method->method())
return JSValue::encode(jsUndefined());
RefPtr<Instance> instance;
JSValue thisValue = callFrame->thisValue();
if (auto* runtimeObject = jsDynamicCast<RuntimeObject*>(thisValue)) {
instance = runtimeObject->getInternalInstance();
if (!instance)
return JSValue::encode(throwRuntimeObjectInvalidAccessError(globalObject, scope));
} else {
// Calling a runtime object of a plugin element?
if (auto* jsHTMLElement = jsDynamicCast<JSHTMLElement*>(thisValue))
instance = pluginInstance(jsHTMLElement->wrapped());
if (!instance)
return throwVMTypeError(globalObject, scope);
}
ASSERT(instance);
instance->begin();
JSValue result = instance->invokeMethod(globalObject, callFrame, method);
instance->end();
return JSValue::encode(result);
}
}