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RoboVM fork of Soot - A Java optimization framework
/* 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.*;
/** Instruction subclasses are used to represent parsed bytecode; each
* bytecode operation has a corresponding subclass of Instruction.
*
* Each subclass is derived from one of
*
- Instruction
* - Instruction_noargs (an Instruction with no embedded arguments)
* - Instruction_byte (an Instruction with a single byte data argument)
* - Instruction_bytevar (a byte argument specifying a local variable)
* - Instruction_byteindex (a byte argument specifying a constant pool index)
* - Instruction_int (an Instruction with a single short data argument)
* - Instruction_intvar (a short argument specifying a local variable)
* - Instruction_intindex (a short argument specifying a constant pool index)
* - Instruction_intbranch (a short argument specifying a code offset)
* - Instruction_longbranch (an int argument specifying a code offset)
*
* @author Clark Verbrugge
* @see Instruction
* @see Instruction_noargs
* @see Instruction_byte
* @see Instruction_bytevar
* @see Instruction_byteindex
* @see Instruction_int
* @see Instruction_intvar
* @see Instruction_intindex
* @see Instruction_intbranch
* @see Instruction_longbranch
* @see Instruction_Unknown
*/
class Instruction_Lookupswitch extends Instruction {
public Instruction_Lookupswitch() { super((byte)ByteCode.LOOKUPSWITCH); name = "lookupswitch"; branches = true; }
public byte pad; // number of bytes used for padding
public int default_offset;
public int npairs;
public int match_offsets[];
public Instruction default_inst;
public Instruction match_insts[];
public String toString(cp_info constant_pool[]) {
// first figure out padding to next 4-byte quantity
String args;
int i;
args = super.toString(constant_pool) + argsep + "(" +
Integer.toString(pad) + ")";
args = args + argsep + Integer.toString(default_inst.label);
args = args + argsep + Integer.toString(npairs) + ": ";
for (i=0;i0) {
match_offsets = new int[npairs*2];
j = 0;
do {
match_offsets[j] = getInt(bc,index);
j++;
index += 4;
match_offsets[j] = getInt(bc,index);
index += 4;
j++;
} while(j0) {
match_insts = new Instruction[npairs];
for (i=0;i