soot.coffi.CONSTANT_Utf8_info Maven / Gradle / Ivy
/* Soot - a J*va Optimization Framework
* Copyright (C) 1997 Clark Verbrugge
*
* 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 1997-1999.
* 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.coffi;
import soot.*;
import java.io.*;
/** A constant pool entry of type CONSTANT_Utf8; note this is not
* multithread safe. It is, however, immutable.
* @see cp_info
* @author Clark Verbrugge
*/
public class CONSTANT_Utf8_info extends cp_info {
// Some local private objects to help with efficient comparisons.
private int sHashCode;
// for caching the conversion.
private String s;
/** Byte array of actual utf8 string. */
private final byte bytes[];
/** Constructor from a DataInputSream */
public CONSTANT_Utf8_info(DataInputStream d) throws IOException {
int len;
len = d.readUnsignedShort();
bytes = new byte[len+2];
bytes[0] = (byte)(len>>8);
bytes[1] = (byte)(len & 0xff);
if (len>0) {
int j;
for (j=0; jtrue if they are equal, false if they are not.
*/
public boolean equals(CONSTANT_Utf8_info cu) {
int i,j;
j = bytes.length;
if (j!=cu.bytes.length) return false;
for (i=0; i0 indicating whether this is smaller,
* the same or larger than cp.
* @see cp_info#compareTo
* @see CONSTANT_Utf8_info#compareTo(cp_info)
*/
public int compareTo(cp_info constant_pool[],cp_info cp,cp_info cp_constant_pool[]) {
return compareTo(cp);
}
/** Compares this entry with another cp_info object; note that for Utf8
* object it really doesn't matter whether they're in the same or a different
* constant pool, since they really do carry all their data.
* @param cp constant pool entry to compare against.
* @return a value <0, 0, or >0 indicating whether this is smaller,
* the same or larger than cp.
* @see cp_info#compareTo
* @see CONSTANT_Utf8_info#compareTo(cp_info[],cp_info,cp_info[])
*/
public int compareTo(cp_info cp) {
if (tag!=cp.tag) return tag-cp.tag;
CONSTANT_Utf8_info cu = (CONSTANT_Utf8_info)cp;
G.v().coffi_CONSTANT_Utf8_info_e1.reset(bytes);
G.v().coffi_CONSTANT_Utf8_info_e2.reset(cu.bytes);
for (;G.v().coffi_CONSTANT_Utf8_info_e1.hasMoreElements() && G.v().coffi_CONSTANT_Utf8_info_e2.hasMoreElements();) {
G.v().coffi_CONSTANT_Utf8_info_e1.nextElement();
G.v().coffi_CONSTANT_Utf8_info_e2.nextElement();
if (G.v().coffi_CONSTANT_Utf8_info_e1.c