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/*
* Copyright (C) 2015 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 "NullSetterFunction.h"
#include "CodeBlock.h"
#include "Error.h"
#include "JSCInlines.h"
#include "JSCJSValueInlines.h"
#include "StackVisitor.h"
namespace JSC {
const ClassInfo NullSetterFunction::s_info = { "Function", &Base::s_info, 0, CREATE_METHOD_TABLE(NullSetterFunction) };
class GetCallerStrictnessFunctor {
public:
GetCallerStrictnessFunctor()
: m_iterations(0)
, m_callerIsStrict(false)
{
}
StackVisitor::Status operator()(StackVisitor& visitor)
{
++m_iterations;
if (m_iterations < 2)
return StackVisitor::Continue;
CodeBlock* codeBlock = visitor->codeBlock();
m_callerIsStrict = codeBlock && codeBlock->isStrictMode();
return StackVisitor::Done;
}
bool callerIsStrict() const { return m_callerIsStrict; }
private:
int m_iterations;
bool m_callerIsStrict;
};
static bool callerIsStrict(ExecState* exec)
{
GetCallerStrictnessFunctor iter;
exec->iterate(iter);
return iter.callerIsStrict();
}
static EncodedJSValue JSC_HOST_CALL callReturnUndefined(ExecState* exec)
{
if (callerIsStrict(exec))
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Setting a property that has only a getter")));
return JSValue::encode(jsUndefined());
}
CallType NullSetterFunction::getCallData(JSCell*, CallData& callData)
{
callData.native.function = callReturnUndefined;
return CallTypeHost;
}
ConstructType NullSetterFunction::getConstructData(JSCell*, ConstructData&)
{
return ConstructTypeNone;
}
}
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