Exemplo n.º 1
0
  public void outAMethodMember(AMethodMember node) {
    int modifier = 0;
    Type type;
    String name;
    List parameterList = null;
    List throwsClause = null;
    JimpleBody methodBody = null;

    if (node.getMethodBody() instanceof AFullMethodBody)
      methodBody = (JimpleBody) mProductions.removeLast();

    if (node.getThrowsClause() != null) throwsClause = (List) mProductions.removeLast();

    if (node.getParameterList() != null) {
      parameterList = (List) mProductions.removeLast();
    } else {
      parameterList = new ArrayList();
    }

    Object o = mProductions.removeLast();

    name = (String) o;
    type = (Type) mProductions.removeLast();
    modifier = processModifiers(node.getModifier());

    SootMethod method;

    if (throwsClause != null)
      method = new SootMethod(name, parameterList, type, modifier, throwsClause);
    else method = new SootMethod(name, parameterList, type, modifier);

    mSootClass.addMethod(method);

    if (method.isConcrete()) {
      methodBody.setMethod(method);
      method.setActiveBody(methodBody);

    } else if (node.getMethodBody() instanceof AFullMethodBody)
      throw new RuntimeException("Impossible: !concrete => ! instanceof");
  }
Exemplo n.º 2
0
  public void outAFullMethodBody(AFullMethodBody node) {
    Object catchClause = null;
    JimpleBody jBody = Jimple.v().newBody();

    if (node.getCatchClause() != null) {
      int size = node.getCatchClause().size();
      for (int i = 0; i < size; i++) jBody.getTraps().addFirst((Trap) mProductions.removeLast());
    }

    if (node.getStatement() != null) {
      int size = node.getStatement().size();
      Unit lastStmt = null;
      for (int i = 0; i < size; i++) {
        Object o = mProductions.removeLast();
        if (o instanceof Unit) {
          jBody.getUnits().addFirst(o);
          lastStmt = (Unit) o;
        } else if (o instanceof String) {
          if (lastStmt == null) throw new RuntimeException("impossible");
          mLabelToStmtMap.put(o, lastStmt);
        } else throw new RuntimeException("impossible");
      }
    }

    if (node.getDeclaration() != null) {
      int size = node.getDeclaration().size();
      for (int i = 0; i < size; i++) {
        List localList = (List) mProductions.removeLast();

        int listSize = localList.size();
        for (int j = listSize - 1; j >= 0; j--) jBody.getLocals().addFirst(localList.get(j));
      }
    }

    Iterator it = mLabelToPatchList.keySet().iterator();
    while (it.hasNext()) {
      String label = (String) it.next();
      Unit target = (Unit) mLabelToStmtMap.get(label);

      Iterator patchIt = ((List) mLabelToPatchList.get(label)).iterator();
      while (patchIt.hasNext()) {
        UnitBox box = (UnitBox) patchIt.next();
        box.setUnit(target);
      }
    }

    /*
    Iterator it = mLabelToStmtMap.keySet().iterator();
    while(it.hasNext()) {
        String label = (String) it.next();
        Unit target = (Unit) mLabelToStmtMap.get(label);

        List l =         (List) mLabelToPatchList.get(label);
        if(l != null) {
            Iterator patchIt = l.iterator();
            while(patchIt.hasNext()) {
                UnitBox box = (UnitBox) patchIt.next();
                box.setUnit(target);
            }
        }
    }
    */

    mProductions.addLast(jBody);
  }
  /**
   * This method pushes all newExpr down to be the stmt directly before every invoke of the init
   * only if they are in the types list
   */
  public void internalTransform(Body b, String phaseName, Map options) {
    JimpleBody body = (JimpleBody) b;

    if (Options.v().verbose())
      G.v().out.println("[" + body.getMethod().getName() + "] Folding Jimple constructors...");

    Chain units = body.getUnits();
    List<Unit> stmtList = new ArrayList<Unit>();
    stmtList.addAll(units);

    Iterator<Unit> it = stmtList.iterator();
    Iterator<Unit> nextStmtIt = stmtList.iterator();
    // start ahead one
    nextStmtIt.next();

    SmartLocalDefs localDefs = SmartLocalDefsPool.v().getSmartLocalDefsFor(body);
    UnitGraph graph = localDefs.getGraph();
    LocalUses localUses = new SimpleLocalUses(graph, localDefs);

    /* fold in NewExpr's with specialinvoke's */
    while (it.hasNext()) {
      Stmt s = (Stmt) it.next();

      if (!(s instanceof AssignStmt)) continue;

      /* this should be generalized to ArrayRefs */
      // only deal with stmts that are an local = newExpr
      Value lhs = ((AssignStmt) s).getLeftOp();
      if (!(lhs instanceof Local)) continue;

      Value rhs = ((AssignStmt) s).getRightOp();
      if (!(rhs instanceof NewExpr)) continue;

      // check if very next statement is invoke -->
      // this indicates there is no control flow between
      // new and invoke and should do nothing
      if (nextStmtIt.hasNext()) {
        Stmt next = (Stmt) nextStmtIt.next();
        if (next instanceof InvokeStmt) {
          InvokeStmt invoke = (InvokeStmt) next;

          if (invoke.getInvokeExpr() instanceof SpecialInvokeExpr) {
            SpecialInvokeExpr invokeExpr = (SpecialInvokeExpr) invoke.getInvokeExpr();
            if (invokeExpr.getBase() == lhs) {
              break;
            }
          }
        }
      }

      // check if new is in the types list - only process these
      if (!types.contains(((NewExpr) rhs).getType())) continue;

      List lu = localUses.getUsesOf(s);
      Iterator luIter = lu.iterator();
      boolean MadeNewInvokeExpr = false;

      while (luIter.hasNext()) {
        Unit use = ((UnitValueBoxPair) (luIter.next())).unit;
        if (!(use instanceof InvokeStmt)) continue;
        InvokeStmt is = (InvokeStmt) use;
        if (!(is.getInvokeExpr() instanceof SpecialInvokeExpr)
            || lhs != ((SpecialInvokeExpr) is.getInvokeExpr()).getBase()) continue;

        // make a new one here
        AssignStmt constructStmt =
            Jimple.v()
                .newAssignStmt(((DefinitionStmt) s).getLeftOp(), ((DefinitionStmt) s).getRightOp());
        constructStmt.setRightOp(Jimple.v().newNewExpr(((NewExpr) rhs).getBaseType()));
        MadeNewInvokeExpr = true;

        // redirect jumps
        use.redirectJumpsToThisTo(constructStmt);
        // insert new one here
        units.insertBefore(constructStmt, use);

        constructStmt.addTag(s.getTag("SourceLnPosTag"));
      }
      if (MadeNewInvokeExpr) {
        units.remove(s);
      }
    }
  }