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/*
* Copyright (C) 2012 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 CallLinkStatus_h
#define CallLinkStatus_h
namespace JSC {
class JSFunction;
class CodeBlock;
class CallLinkStatus {
public:
CallLinkStatus()
: m_callTarget(0)
, m_couldTakeSlowPath(false)
{
}
CallLinkStatus(JSFunction* callTarget, bool couldTakeSlowPath)
: m_callTarget(callTarget)
, m_couldTakeSlowPath(couldTakeSlowPath)
{
}
static CallLinkStatus computeFor(CodeBlock*, unsigned bytecodeIndex);
bool isSet() const { return !!m_callTarget || m_couldTakeSlowPath; }
bool operator!() const { return !isSet(); }
bool couldTakeSlowPath() const { return m_couldTakeSlowPath; }
JSFunction* callTarget() const { return m_callTarget; }
private:
static CallLinkStatus computeFromLLInt(CodeBlock*, unsigned bytecodeIndex);
JSFunction* m_callTarget;
bool m_couldTakeSlowPath;
};
} // namespace JSC
#endif // CallLinkStatus_h
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