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/*
* Copyright (C) 2007-2021 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.
* 3. Neither the name of Apple Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 "ZigGlobalObject.h"
#include "JSCallbackData.h"
#include "JSDOMBinding.h"
// #include "JSExecState.h"
// #include "JSExecStateInstrumentation.h"
#include <JavaScriptCore/Exception.h>
namespace WebCore {
using namespace JSC;
// https://webidl.spec.whatwg.org/#call-a-user-objects-operation
JSValue JSCallbackData::invokeCallback(VM& vm, JSObject* callback, JSValue thisValue, MarkedArgumentBuffer& args, CallbackType method, PropertyName functionName, NakedPtr<JSC::Exception>& returnedException)
{
ASSERT(callback);
// https://webidl.spec.whatwg.org/#ref-for-prepare-to-run-script makes callback's [[Realm]] a running JavaScript execution context,
// which is used for creating TypeError objects: https://tc39.es/ecma262/#sec-ecmascript-function-objects-call-thisargument-argumentslist (step 4).
JSGlobalObject* lexicalGlobalObject = callback->globalObject(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSValue function;
CallData callData;
if (method != CallbackType::Object) {
function = callback;
callData = getCallData(vm, callback);
}
if (callData.type == CallData::Type::None) {
if (method == CallbackType::Function) {
returnedException = JSC::Exception::create(vm, createTypeError(lexicalGlobalObject));
return JSValue();
}
ASSERT(!functionName.isNull());
function = callback->get(lexicalGlobalObject, functionName);
if (UNLIKELY(scope.exception())) {
returnedException = scope.exception();
scope.clearException();
return JSValue();
}
callData = getCallData(vm, function);
if (callData.type == CallData::Type::None) {
returnedException = JSC::Exception::create(vm, createTypeError(lexicalGlobalObject, makeString("'", String(functionName.uid()), "' property of callback interface should be callable")));
return JSValue();
}
thisValue = callback;
}
ASSERT(!function.isEmpty());
ASSERT(callData.type != CallData::Type::None);
ScriptExecutionContext* context = jsCast<JSDOMGlobalObject*>(lexicalGlobalObject)->scriptExecutionContext();
// We will fail to get the context if the frame has been detached.
if (!context)
return JSValue();
// JSExecState::instrumentFunction(context, callData);
returnedException = nullptr;
JSValue result = JSC::profiledCall(lexicalGlobalObject, JSC::ProfilingReason::Other, function, callData, thisValue, args, returnedException);
// InspectorInstrumentation::didCallFunction(context);
return result;
}
template<typename Visitor>
void JSCallbackDataWeak::visitJSFunction(Visitor& visitor)
{
visitor.append(m_callback);
}
template void JSCallbackDataWeak::visitJSFunction(JSC::AbstractSlotVisitor&);
template void JSCallbackDataWeak::visitJSFunction(JSC::SlotVisitor&);
bool JSCallbackDataWeak::WeakOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, AbstractSlotVisitor& visitor, const char** reason)
{
if (UNLIKELY(reason))
*reason = "Context is opaque root"; // FIXME: what is the context.
return visitor.containsOpaqueRoot(context);
}
} // namespace WebCore
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