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/*
* Copyright (C) 2009-2023 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 "ExceptionHelpers.h"
#include "JSFunction.h"
#include "Interpreter.h"
#include "ProtoCallFrame.h"
#include "VMEntryScope.h"
#include "VMInlines.h"
#include <wtf/ForbidHeapAllocation.h>
#include <wtf/Scope.h>
namespace JSC {
class CachedCall {
WTF_MAKE_NONCOPYABLE(CachedCall);
WTF_FORBID_HEAP_ALLOCATION;
public:
CachedCall(JSGlobalObject* globalObject, JSFunction* function, int argumentCount)
: m_vm(globalObject->vm())
, m_entryScope(m_vm, function->scope()->globalObject())
, m_functionExecutable(function->jsExecutable())
, m_scope(function->scope())
{
VM& vm = m_vm;
auto scope = DECLARE_THROW_SCOPE(vm);
#if ASSERT_ENABLED
auto updateValidStatus = makeScopeExit([&] {
m_valid = !scope.exception();
});
#endif
ASSERT(!function->isHostFunctionNonInline());
if (UNLIKELY(!vm.isSafeToRecurseSoft())) {
throwStackOverflowError(globalObject, scope);
return;
}
m_arguments.ensureCapacity(argumentCount);
if (UNLIKELY(m_arguments.hasOverflowed())) {
throwOutOfMemoryError(globalObject, scope);
return;
}
scope.release();
m_vm.interpreter.prepareForCachedCall(*this, function, argumentCount + 1, m_arguments);
}
ALWAYS_INLINE JSValue call()
{
ASSERT(m_valid);
ASSERT(m_arguments.size() == static_cast<size_t>(m_protoCallFrame.argumentCount()));
return m_vm.interpreter.executeCachedCall(*this);
}
JSFunction* function()
{
ASSERT(m_valid);
return jsCast<JSFunction*>(m_protoCallFrame.calleeValue.unboxedCell());
}
FunctionExecutable* functionExecutable() { return m_functionExecutable; }
JSScope* scope() { return m_scope; }
void setThis(JSValue v) { m_protoCallFrame.setThisValue(v); }
void clearArguments() { m_arguments.clear(); }
void appendArgument(JSValue v) { m_arguments.append(v); }
bool hasOverflowedArguments() { return m_arguments.hasOverflowed(); }
private:
VM& m_vm;
VMEntryScope m_entryScope;
ProtoCallFrame m_protoCallFrame;
MarkedArgumentBuffer m_arguments;
FunctionExecutable* m_functionExecutable;
JSScope* m_scope;
void* m_addressForCall;
#if ASSERT_ENABLED
bool m_valid { false };
#endif
friend class Interpreter;
};
} // namespace JSC
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