/*
 * 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 HandlerInfo_h
#define HandlerInfo_h

#include "CodeLocation.h"
#include <wtf/Platform.h>

namespace JSC {

enum class HandlerType {
    Catch = 0,
    Finally = 1,
    SynthesizedCatch = 2,
    SynthesizedFinally = 3
};

struct HandlerInfo {
    HandlerType type() const { return static_cast<HandlerType>(typeBits); }
    void setType(HandlerType type) { typeBits = static_cast<uint32_t>(type); }

    const char* typeName()
    {
        switch (type()) {
        case HandlerType::Catch:
            return "catch";
        case HandlerType::Finally:
            return "finally";
        case HandlerType::SynthesizedCatch:
            return "synthesized catch";
        case HandlerType::SynthesizedFinally:
            return "synthesized finally";
        default:
            ASSERT_NOT_REACHED();
        }
        return 0;
    }

    bool isCatchHandler() const { return type() == HandlerType::Catch; }

    uint32_t start;
    uint32_t end;
    uint32_t target;
    uint32_t typeBits : 2; // HandlerType
    CodeLocationLabel nativeCode;
};

} // namespace JSC

#endif // HandlerInfo_h

