/* * 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