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/*
* Copyright (C) 2009-2017 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.
*/
#pragma once
#include "CallFrameClosure.h"
#include "ExceptionHelpers.h"
#include "JSFunction.h"
#include "Interpreter.h"
#include "ProtoCallFrame.h"
#include "VMEntryScope.h"
#include "VMInlines.h"
#include <wtf/ForbidHeapAllocation.h>
namespace JSC {
class CachedCall {
WTF_MAKE_NONCOPYABLE(CachedCall);
WTF_FORBID_HEAP_ALLOCATION;
public:
CachedCall(CallFrame* callFrame, JSFunction* function, int argumentCount)
: m_valid(false)
, m_interpreter(callFrame->interpreter())
, m_vm(callFrame->vm())
, m_entryScope(m_vm, function->scope()->globalObject(m_vm))
{
VM& vm = m_entryScope.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(!function->isHostFunctionNonInline());
if (UNLIKELY(vm.isSafeToRecurseSoft())) {
m_arguments.ensureCapacity(argumentCount);
m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, &m_protoCallFrame, function, argumentCount + 1, function->scope(), m_arguments);
} else
throwStackOverflowError(callFrame, scope);
m_valid = !scope.exception();
}
JSValue call()
{
ASSERT(m_valid);
ASSERT(m_arguments.size() == static_cast<size_t>(m_protoCallFrame.argumentCount()));
return m_interpreter->execute(m_closure);
}
void setThis(JSValue v) { m_protoCallFrame.setThisValue(v); }
void clearArguments() { m_arguments.clear(); }
void appendArgument(JSValue v) { m_arguments.append(v); }
private:
bool m_valid;
Interpreter* m_interpreter;
VM& m_vm;
VMEntryScope m_entryScope;
ProtoCallFrame m_protoCallFrame;
MarkedArgumentBuffer m_arguments;
CallFrameClosure m_closure;
};
}
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