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/*
 * Copyright (C) 2012 RoboVM AB
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.robovm.compiler.llvm;


import java.io.IOException;
import java.io.Writer;

/**
 *
 * @version $Id$
 */
public class UnnamedMetadataRef extends Metadata {
    private final int index;

    public UnnamedMetadataRef(UnnamedMetadata metadata) {
        this(metadata.getIndex());
    }
    
    public UnnamedMetadataRef(int index) {
        this.index = index;
    }
    
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + index;
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        UnnamedMetadataRef other = (UnnamedMetadataRef) obj;
        if (index != other.index) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "!" + index;
    }

    @Override
    public void write(Writer writer) throws IOException {
        writer.write(toString());
    }
}