Start line:  
End line:  

Snippet Preview

Snippet HTML Code

Stack Overflow Questions
 /* 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)

abstract class Instruction_branch extends Instruction {
   public int arg_i;
   public Instruction target;         // pointer to target instruction
   public Instruction_branch(byte c) { super(c);  = true; }
   public String toString(cp_info constant_pool[]) {
      return super.toString(constant_pool) +  
	  + "[label_" + Integer.toString(.) + "]";
   }
   public void offsetToPointer(ByteCode bc) {
       = bc.locateInst(+);
      if (==null) {
         G.v()..println("Warning: can't locate target of instruction");
         G.v()..println(" which should be at byte address " + (+));
      } else
         . = true;
   }
   // returns the array of instructions which might be the target of a
   // branch with this instruction, assuming the next instruction is next
   public Instruction[] branchpoints(Instruction next) {
      Instruction i[] = new Instruction[2];
      i[0] = i[1] = next;
      return i;
   }
    public String toString()
    {
	return super.toString()+ "\t"+.;
    }
New to GrepCode? Check out our FAQ X