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path: root/Source/JavaScriptCore/dfg/DFGNode.cpp
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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. 
 */

#include "config.h"
#include "DFGNode.h"

#if ENABLE(DFG_JIT)

namespace JSC { namespace DFG {

const char* arithNodeFlagsAsString(NodeFlags flags)
{
    flags &= NodeArithMask;
    
    if (!flags)
        return "<empty>";

    static const int size = 64;
    static char description[size];
    BoundsCheckedPointer<char> ptr(description, size);
    
    bool hasPrinted = false;
    
    if (flags & NodeUsedAsNumber) {
        ptr.strcat("UsedAsNum");
        hasPrinted = true;
    }
    
    if (flags & NodeNeedsNegZero) {
        if (hasPrinted)
            ptr.strcat("|");
        ptr.strcat("NeedsNegZero");
        hasPrinted = true;
    }
    
    if (flags & NodeMayOverflow) {
        if (hasPrinted)
            ptr.strcat("|");
        ptr.strcat("MayOverflow");
        hasPrinted = true;
    }
    
    if (flags & NodeMayNegZero) {
        if (hasPrinted)
            ptr.strcat("|");
        ptr.strcat("MayNegZero");
        hasPrinted = true;
    }
    
    *ptr++ = 0;
    
    return description;
}


} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)