mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/*
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* Copyright (C) 2015-2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "NullSetterFunction.h"
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#include "CodeBlock.h"
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#include "Error.h"
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#include "JSCInlines.h"
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#include "JSCJSValueInlines.h"
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#include "StackVisitor.h"
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namespace JSC {
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const ClassInfo NullSetterFunction::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(NullSetterFunction) };
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class GetCallerStrictnessFunctor {
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public:
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GetCallerStrictnessFunctor()
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: m_iterations(0)
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, m_callerIsStrict(false)
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{
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}
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StackVisitor::Status operator()(StackVisitor& visitor) const
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{
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++m_iterations;
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if (m_iterations < 2)
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return StackVisitor::Continue;
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CodeBlock* codeBlock = visitor->codeBlock();
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m_callerIsStrict = codeBlock && codeBlock->isStrictMode();
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return StackVisitor::Done;
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}
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bool callerIsStrict() const { return m_callerIsStrict; }
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private:
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mutable int m_iterations;
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mutable bool m_callerIsStrict;
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};
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static bool callerIsStrict(ExecState* exec)
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{
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GetCallerStrictnessFunctor iter;
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exec->iterate(iter);
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return iter.callerIsStrict();
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}
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namespace NullSetterFunctionInternal {
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static EncodedJSValue JSC_HOST_CALL callReturnUndefined(ExecState* exec)
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{
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VM& vm = exec->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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if (callerIsStrict(exec))
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return JSValue::encode(throwTypeError(exec, scope, "Setting a property that has only a getter"_s));
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return JSValue::encode(jsUndefined());
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}
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}
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NullSetterFunction::NullSetterFunction(VM& vm, Structure* structure)
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: Base(vm, structure, NullSetterFunctionInternal::callReturnUndefined, nullptr)
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{
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}
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}
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