/**
* Create a method conveniently. The method is added to the class "TestClass". Parameters can be
* given as an (positional) array of local variables (the "identity statements", required by Soot
* to map parameters to local variables, are inserted automatically)
*/
public SootMethod makeMethod(
int modifier, String name, List<Local> params, soot.Type retType, List<Unit> bodyStmts) {
SootMethod m =
new SootMethod(
name, params.stream().map(Local::getType).collect(toList()), retType, modifier);
this.testClass.addMethod(m);
Body body = Jimple.v().newBody(m);
m.setActiveBody(body);
// set the statements for the body.. first the identity statements, then the bodyStmts
if (!m.isStatic()) {
body.getLocals().add(localThis);
body.getUnits()
.add(Jimple.v().newIdentityStmt(localThis, Jimple.v().newThisRef(testClass.getType())));
}
IntStream.range(0, params.size())
.forEach(
pos -> {
Local l = params.get(pos);
ParameterRef pr = Jimple.v().newParameterRef(l.getType(), pos);
body.getUnits().add(Jimple.v().newIdentityStmt(l, pr));
});
body.getUnits().addAll(bodyStmts);
// set the locals for the body
Set<Local> locals =
Stream.concat(
params.stream(),
body.getUseAndDefBoxes()
.stream()
.filter(b -> b.getValue() instanceof Local)
.map(b -> (Local) b.getValue()))
.collect(toSet());
locals.removeAll(body.getLocals());
body.getLocals().addAll(locals);
return m;
}
/*
* Generates the sequence of instructions needed to instrument ifStmtUnit
*
* @param ifStmtUnit: the unit to be instrumented
* @return A Chain of Units that represent the instrumentation of ifStmtUnit
*/
private static Chain<Unit> generateInstrumentationUnits(Unit ifStmtUnit, Body b) {
AbstractBinopExpr expression =
(AbstractBinopExpr)
((JIfStmt) ifStmtUnit).getCondition(); // implementation of AbstractBinopExpr
Value operand1 = expression.getOp1();
Value operand2 = expression.getOp2();
JimpleLocal op1Local = (JimpleLocal) operand1;
// Local localOperand = Jimple.v().newLocal("op1", operand1.getType());
// b.getLocals().add(localOperand);
// We need to use these operand as Locals or constants
/**
* JimpleLocal test; if(operand1 instanceof soot.jimple.internal.JimpleLocal) test =
* (JimpleLocal)operand1; else test = null;
*/
String op = expression.getClass().toString();
Chain<Unit> resultUnits = new HashChain<Unit>();
Local tmpRef;
// Add locals directely on the top of the body, java.io.printStream tmpRef
tmpRef = Jimple.v().newLocal("tmpRef", RefType.v("java.io.PrintStream"));
b.getLocals().addFirst(tmpRef);
// add "tmpRef = java.lang.System.out"
resultUnits.add(
Jimple.v()
.newAssignStmt(
tmpRef,
Jimple.v()
.newStaticFieldRef(
Scene.v()
.getField("<java.lang.System: java.io.PrintStream out>")
.makeRef())));
{
SootMethod toCall =
Scene.v().getMethod("<java.io.PrintStream: void println(java.lang.String)>");
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v()
.newVirtualInvokeExpr(
tmpRef, toCall.makeRef(), StringConstant.v("Operande 1: "))));
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v()
.newVirtualInvokeExpr(
tmpRef,
toCall.makeRef(),
StringConstant.v(operand1.getClass().toString()))));
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v()
.newVirtualInvokeExpr(
tmpRef, toCall.makeRef(), StringConstant.v("Operande 2:"))));
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v()
.newVirtualInvokeExpr(
tmpRef,
toCall.makeRef(),
StringConstant.v(operand2.getClass().toString()))));
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v()
.newVirtualInvokeExpr(
tmpRef, toCall.makeRef(), StringConstant.v("Operateur: "))));
resultUnits.add(
Jimple.v()
.newInvokeStmt(
Jimple.v().newVirtualInvokeExpr(tmpRef, toCall.makeRef(), StringConstant.v(op))));
}
return resultUnits;
}