soot.jimple.toolkits.typing.Util Maven / Gradle / Ivy
package soot.jimple.toolkits.typing;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
* %%
* 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 soot.Body;
import soot.Unit;
import soot.jimple.IdentityStmt;
import soot.jimple.Stmt;
public class Util {
/**
* A new "normal" statement cannot be inserted in the middle of special "identity statements" (a = @parameter or b = @this
* in Jimple).
*
* This method returns the last "identity statement" of the method.
*
* @param b
* @param s
* @return
*/
public static Unit findLastIdentityUnit(Body b, Stmt s) {
Unit u2 = s;
Unit u1 = s;
while (u1 instanceof IdentityStmt) {
u2 = u1;
u1 = b.getUnits().getSuccOf(u1);
}
return u2;
}
/**
* Returns the first statement after all the "identity statements".
*
* @param b
* @param s
* @return
*/
public static Unit findFirstNonIdentityUnit(Body b, Stmt s) {
Unit u1 = s;
while (u1 instanceof IdentityStmt) {
u1 = b.getUnits().getSuccOf(u1);
}
return u1;
}
}