soot.dexpler.instructions.GotoInstruction Maven / Gradle / Ivy
package soot.dexpler.instructions;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2012 Michael Markert, Frank Hartmann
*
* (c) 2012 University of Luxembourg - Interdisciplinary Centre for
* Security Reliability and Trust (SnT) - All rights reserved
* Alexandre Bartel
*
* %%
* This program 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 program 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 General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import org.jf.dexlib2.iface.instruction.Instruction;
import soot.dexpler.DexBody;
import soot.jimple.GotoStmt;
import soot.jimple.Jimple;
public class GotoInstruction extends JumpInstruction implements DeferableInstruction {
public GotoInstruction(Instruction instruction, int codeAdress) {
super(instruction, codeAdress);
}
public void jimplify(DexBody body) {
// check if target instruction has been jimplified
if (getTargetInstruction(body).getUnit() != null) {
body.add(gotoStatement());
return;
}
// set marker unit to swap real gotostmt with otherwise
body.addDeferredJimplification(this);
markerUnit = Jimple.v().newNopStmt();
addTags(markerUnit);
unit = markerUnit;
body.add(markerUnit);
}
public void deferredJimplify(DexBody body) {
body.getBody().getUnits().insertAfter(gotoStatement(), markerUnit);
}
private GotoStmt gotoStatement() {
GotoStmt go = Jimple.v().newGotoStmt(targetInstruction.getUnit());
setUnit(go);
addTags(go);
return go;
}
}