@Override
  protected void assignToArray(
      Expression orig, Expression receiver, Expression index, Expression rhsValueLoader) {
    ClassNode current = getController().getClassNode();
    ClassNode arrayType = getController().getTypeChooser().resolveType(receiver, current);
    ClassNode arrayComponentType = arrayType.getComponentType();
    int operationType = getOperandType(arrayComponentType);
    BinaryExpressionWriter bew = binExpWriter[operationType];
    AsmClassGenerator acg = getController().getAcg();

    if (bew.arraySet(true) && arrayType.isArray()) {
      OperandStack operandStack = getController().getOperandStack();

      // load the array
      receiver.visit(acg);
      operandStack.doGroovyCast(arrayType);

      // load index
      index.visit(acg);
      operandStack.doGroovyCast(int_TYPE);

      // load rhs
      rhsValueLoader.visit(acg);
      operandStack.doGroovyCast(arrayComponentType);

      // store value in array
      bew.arraySet(false);

      // load return value && correct operand stack stack
      operandStack.remove(3);
      rhsValueLoader.visit(acg);
    } else {
      super.assignToArray(orig, receiver, index, rhsValueLoader);
    }
  }
 @Override
 protected void writePostOrPrefixMethod(
     int op, String method, Expression expression, Expression orig) {
   ClassNode type =
       getController().getTypeChooser().resolveType(orig, getController().getClassNode());
   int operationType = getOperandType(type);
   BinaryExpressionWriter bew = binExpWriter[operationType];
   if (bew.writePostOrPrefixMethod(op, true)) {
     OperandStack operandStack = getController().getOperandStack();
     // at this point the receiver will be already on the stack
     operandStack.doGroovyCast(type);
     bew.writePostOrPrefixMethod(op, false);
     operandStack.replace(bew.getNormalOpResultType());
   } else {
     super.writePostOrPrefixMethod(op, method, expression, orig);
   }
 }
  protected boolean doPrimitiveCompare(
      ClassNode leftType, ClassNode rightType, BinaryExpression binExp) {
    Expression leftExp = binExp.getLeftExpression();
    Expression rightExp = binExp.getRightExpression();
    int operation = binExp.getOperation().getType();

    int operationType = getOperandConversionType(leftType, rightType);
    BinaryExpressionWriter bew = binExpWriter[operationType];

    if (!bew.write(operation, true)) return false;

    AsmClassGenerator acg = getController().getAcg();
    OperandStack os = getController().getOperandStack();
    leftExp.visit(acg);
    os.doGroovyCast(bew.getNormalOpResultType());
    rightExp.visit(acg);
    os.doGroovyCast(bew.getNormalOpResultType());
    bew.write(operation, false);

    return true;
  }
  private boolean doAssignmentToArray(BinaryExpression binExp) {
    if (!isAssignmentToArray(binExp)) return false;
    // we need to handle only assignment to arrays combined with an operation
    // special here. e.g x[a] += b

    int operation = removeAssignment(binExp.getOperation().getType());
    ClassNode current = getController().getClassNode();

    Expression leftExp = binExp.getLeftExpression();
    ClassNode leftType = getController().getTypeChooser().resolveType(leftExp, current);
    Expression rightExp = binExp.getRightExpression();
    ClassNode rightType = getController().getTypeChooser().resolveType(rightExp, current);

    int operationType = getOperandType(leftType);
    BinaryExpressionWriter bew = binExpWriter[operationType];

    boolean simulationSuccess = bew.arrayGet(LEFT_SQUARE_BRACKET, true);
    simulationSuccess = simulationSuccess && bew.write(operation, true);
    simulationSuccess = simulationSuccess && bew.arraySet(true);
    if (!simulationSuccess) return false;

    AsmClassGenerator acg = getController().getAcg();
    OperandStack operandStack = getController().getOperandStack();
    CompileStack compileStack = getController().getCompileStack();

    // for x[a] += b we have the structure:
    //   x = left(left(binExp))), b = right(binExp), a = right(left(binExp)))
    // for array set we need these values on stack: array, index, right
    // for array get we need these values on stack: array, index
    // to eval the expression we need x[a] = x[a]+b
    // -> arraySet(x,a, x[a]+b)
    // -> arraySet(x,a, arrayGet(x,a,b))
    // --> x,a, x,a, b as operands
    // --> load x, load a, DUP2, call arrayGet, load b, call operation,call arraySet
    // since we cannot DUP2 here easily we will save the subscript and DUP x
    // --> sub=a, load x, DUP, load sub, call arrayGet, load b, call operation, load sub, call
    // arraySet

    BinaryExpression arrayWithSubscript = (BinaryExpression) leftExp;
    Expression subscript = arrayWithSubscript.getRightExpression();

    // load array index: sub=a [load x, DUP, load sub, call arrayGet, load b, call operation, load
    // sub, call arraySet]
    subscript.visit(acg);
    operandStack.doGroovyCast(int_TYPE);
    int subscriptValueId = compileStack.defineTemporaryVariable("$sub", ClassHelper.int_TYPE, true);

    // load array: load x and DUP [load sub, call arrayGet, load b, call operation, load sub, call
    // arraySet]
    arrayWithSubscript.getLeftExpression().visit(acg);
    operandStack.doGroovyCast(leftType.makeArray());
    operandStack.dup();

    // array get: load sub, call arrayGet [load b, call operation, load sub, call arraySet]
    operandStack.load(ClassHelper.int_TYPE, subscriptValueId);
    bew.arrayGet(LEFT_SQUARE_BRACKET, false);
    operandStack.replace(leftType, 2);

    // complete rhs: load b, call operation [load sub, call arraySet]
    binExp.getRightExpression().visit(acg);
    if (!(bew instanceof BinaryObjectExpressionHelper)) {
      // in primopts we convert to the left type for supported binary operations
      operandStack.doGroovyCast(leftType);
    }
    bew.write(operation, false);

    // let us save that value for the return
    operandStack.dup();
    int resultValueId = compileStack.defineTemporaryVariable("$result", rightType, true);

    // array set: load sub, call arraySet []
    operandStack.load(ClassHelper.int_TYPE, subscriptValueId);
    operandStack.swap();
    bew.arraySet(false);
    operandStack.remove(3); // 3 operands, the array, the index and the value!

    // load return value
    operandStack.load(rightType, resultValueId);

    // cleanup
    compileStack.removeVar(resultValueId);
    compileStack.removeVar(subscriptValueId);
    return true;
  }
  @Override
  protected void evaluateBinaryExpression(final String message, BinaryExpression binExp) {
    int operation = removeAssignment(binExp.getOperation().getType());
    ClassNode current = getController().getClassNode();

    Expression leftExp = binExp.getLeftExpression();
    ClassNode leftTypeOrig = getController().getTypeChooser().resolveType(leftExp, current);
    ClassNode leftType = leftTypeOrig;
    Expression rightExp = binExp.getRightExpression();
    ClassNode rightType = getController().getTypeChooser().resolveType(rightExp, current);

    AsmClassGenerator acg = getController().getAcg();
    OperandStack os = getController().getOperandStack();

    if (operation == LEFT_SQUARE_BRACKET) {
      leftType = leftTypeOrig.getComponentType();
      int operationType = getOperandType(leftType);
      BinaryExpressionWriter bew = binExpWriter[operationType];
      if (leftTypeOrig.isArray() && isIntCastableType(rightExp) && bew.arrayGet(operation, true)) {
        leftExp.visit(acg);
        os.doGroovyCast(leftTypeOrig);
        rightExp.visit(acg);
        os.doGroovyCast(int_TYPE);
        bew.arrayGet(operation, false);
        os.replace(bew.getArrayGetResultType(), 2);
      } else {
        super.evaluateBinaryExpression(message, binExp);
      }
    } else if (operation == DIVIDE) {
      int operationType =
          getOperandType(getController().getTypeChooser().resolveType(binExp, current));
      BinaryExpressionWriter bew = binExpWriter[operationType];
      if (bew.writeDivision(true)) {
        leftExp.visit(acg);
        os.doGroovyCast(bew.getDevisionOpResultType());
        rightExp.visit(acg);
        os.doGroovyCast(bew.getDevisionOpResultType());
        bew.writeDivision(false);
      } else {
        super.evaluateBinaryExpression(message, binExp);
      }
    } else {
      int operationType = getOperandConversionType(leftType, rightType);
      BinaryExpressionWriter bew = binExpWriter[operationType];

      if (isShiftOperation(operation)
          && isIntCastableType(rightExp)
          && bew.write(operation, true)) {
        leftExp.visit(acg);
        os.doGroovyCast(bew.getNormalOpResultType());
        rightExp.visit(acg);
        os.doGroovyCast(int_TYPE);
        bew.write(operation, false);
      } else if (bew.write(operation, true)) {
        leftExp.visit(acg);
        os.doGroovyCast(bew.getNormalOpResultType());
        rightExp.visit(acg);
        os.doGroovyCast(bew.getNormalOpResultType());
        bew.write(operation, false);
      } else {
        super.evaluateBinaryExpression(message, binExp);
      }
    }
  }