/*
 * Created on Dec 4, 2004
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package org.apache.bcel.classfile;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import org.apache.bcel.Constants;

/**
 * @author yann
 *
 */
public final class EscapeAttribute extends Attribute {

	static final long serialVersionUID = 0;
	
	private short[] offsets;
	
	public EscapeAttribute(int name_index, int length, short[] offsets, ConstantPool cp) {
		super(Constants.ATTR_ESCAPE_MAP,name_index,length,cp);
		this.offsets = offsets; 
	}
	
	public EscapeAttribute(int name_index, int length, DataInputStream str, ConstantPool cp)
		throws IOException {
	    this(name_index, length, (short [])null, cp);

	    int nb = length / 2;
	    if(nb > 0) {
	        offsets = new short[nb];
	        
	        for(int i = 0; i < nb; i++) {
	            offsets[i] = str.readShort();
	        }
	    }
	}
	
	public void accept(Visitor v) {
	    v.visitEscapeMap(this);
	}

	public Attribute copy(ConstantPool cp) {
		EscapeAttribute copy = (EscapeAttribute)clone();
		System.arraycopy(offsets,0,copy.offsets,0,offsets.length);
		return copy;
	}

	public final void dump(DataOutputStream file) throws IOException {
		super.dump(file);
		for(int i = 0; i < offsets.length; i++) {
			file.writeShort(offsets[i]);
		}
	}
	
	public short[] getOffsets() {
		return offsets;
	}

	public final String toString() {
	    StringBuffer buf = new StringBuffer("EscapeMap(");
	    
	    for(int i=0; i < offsets.length; i++) {
	        buf.append(offsets[i]);
	        
	        if(i < offsets.length - 1)
	            buf.append(", ");
	    }

	    buf.append(')');
	 	
	    return buf.toString();    
	}
}