114 lines
4.2 KiB
C
114 lines
4.2 KiB
C
![]() |
/*
|
||
|
* Copyright (C) 2013, 2016 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.
|
||
|
*/
|
||
|
|
||
|
#ifndef APICallbackFunction_h
|
||
|
#define APICallbackFunction_h
|
||
|
|
||
|
#include "APICast.h"
|
||
|
#include "Error.h"
|
||
|
#include "JSCallbackConstructor.h"
|
||
|
#include "JSLock.h"
|
||
|
#include <wtf/Vector.h>
|
||
|
|
||
|
namespace JSC {
|
||
|
|
||
|
struct APICallbackFunction {
|
||
|
|
||
|
template <typename T> static EncodedJSValue JSC_HOST_CALL call(ExecState*);
|
||
|
template <typename T> static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
|
||
|
|
||
|
};
|
||
|
|
||
|
template <typename T>
|
||
|
EncodedJSValue JSC_HOST_CALL APICallbackFunction::call(ExecState* exec)
|
||
|
{
|
||
|
VM& vm = exec->vm();
|
||
|
auto scope = DECLARE_THROW_SCOPE(vm);
|
||
|
JSContextRef execRef = toRef(exec);
|
||
|
JSObjectRef functionRef = toRef(exec->jsCallee());
|
||
|
JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(exec->thisValue().toThis(exec, NotStrictMode)));
|
||
|
|
||
|
int argumentCount = static_cast<int>(exec->argumentCount());
|
||
|
Vector<JSValueRef, 16> arguments;
|
||
|
arguments.reserveInitialCapacity(argumentCount);
|
||
|
for (int i = 0; i < argumentCount; i++)
|
||
|
arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i)));
|
||
|
|
||
|
JSValueRef exception = 0;
|
||
|
JSValueRef result;
|
||
|
{
|
||
|
JSLock::DropAllLocks dropAllLocks(exec);
|
||
|
result = jsCast<T*>(toJS(functionRef))->functionCallback()(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
|
||
|
}
|
||
|
if (exception)
|
||
|
throwException(exec, scope, toJS(exec, exception));
|
||
|
|
||
|
// result must be a valid JSValue.
|
||
|
if (!result)
|
||
|
return JSValue::encode(jsUndefined());
|
||
|
|
||
|
return JSValue::encode(toJS(exec, result));
|
||
|
}
|
||
|
|
||
|
template <typename T>
|
||
|
EncodedJSValue JSC_HOST_CALL APICallbackFunction::construct(ExecState* exec)
|
||
|
{
|
||
|
VM& vm = exec->vm();
|
||
|
auto scope = DECLARE_THROW_SCOPE(vm);
|
||
|
JSObject* constructor = exec->jsCallee();
|
||
|
JSContextRef ctx = toRef(exec);
|
||
|
JSObjectRef constructorRef = toRef(constructor);
|
||
|
|
||
|
JSObjectCallAsConstructorCallback callback = jsCast<T*>(constructor)->constructCallback();
|
||
|
if (callback) {
|
||
|
size_t argumentCount = exec->argumentCount();
|
||
|
Vector<JSValueRef, 16> arguments;
|
||
|
arguments.reserveInitialCapacity(argumentCount);
|
||
|
for (size_t i = 0; i < argumentCount; ++i)
|
||
|
arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i)));
|
||
|
|
||
|
JSValueRef exception = 0;
|
||
|
JSObjectRef result;
|
||
|
{
|
||
|
JSLock::DropAllLocks dropAllLocks(exec);
|
||
|
result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
|
||
|
}
|
||
|
if (exception) {
|
||
|
throwException(exec, scope, toJS(exec, exception));
|
||
|
return JSValue::encode(toJS(exec, exception));
|
||
|
}
|
||
|
// result must be a valid JSValue.
|
||
|
if (!result)
|
||
|
return throwVMTypeError(exec, scope);
|
||
|
return JSValue::encode(toJS(result));
|
||
|
}
|
||
|
|
||
|
return JSValue::encode(toJS(JSObjectMake(ctx, jsCast<JSCallbackConstructor*>(constructor)->classRef(), 0)));
|
||
|
}
|
||
|
|
||
|
} // namespace JSC
|
||
|
|
||
|
#endif // APICallbackFunction_h
|