/* Soot - a J*va Optimization Framework
* Copyright (C) 1997-2002 Raja Vallee-Rai
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the Sable Research Group and others 1997-2002.
* See the 'credits' file distributed with Soot for the complete list of
* contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
*/
package soot.tagkit;
/** This class represents a tag for byte-code offset of
* instructions that correspond to Jimple statements.
*
* @author Roman Manevich.
* @since October 3 2002 Initial creation.
*/
public class BytecodeOffsetTag implements Tag {
/** The index of the last byte-code instruction.
*/
private int offset;
/** Constructs a tag from the index offset.
*/
public BytecodeOffsetTag(int offset) {
this.offset = offset;
}
/** Returns the name of this tag.
*/
public String getName() {
return "BytecodeOffsetTag";
}
/** Returns the offset in a four byte array.
*/
public byte [] getValue() {
byte [] v = new byte[4];
v[0] = (byte) ((offset >> 24) % 256);;
v[1] = (byte) ((offset >> 16) % 256);;
v[2] = (byte) ((offset >> 8) % 256);;
v[3] = (byte) (offset % 256);
return v;
}
/** Returns the offset as an int.
*/
public int getBytecodeOffset() {
return offset;
}
/** Returns the offset in a string.
*/
public String toString() {
return "" + offset;
}
}