private ExpressionNode EExpression() throws SyntaxException {
        try {
            ExpressionNode node = FExpression();

            if (iterator.current().type().is(Token.Type.IncDec)) {
                UnaryOperationNode.Operation operation;
                Position pos = iterator.current().coordinates().starting();
                switch (iterator.current().type()) {
                    case INC:
                        operation = UnaryOperationNode.Operation.POST_INC;
                        break;
                    case DEC:
                        operation = UnaryOperationNode.Operation.POST_DEC;
                        break;
                    default:
                        return ExpressionNode.InvalidNode(pos);
                }
                nextToken();
                node = new UnaryOperationNode(operation, node, pos);
            }

            return node;
        } catch(SyntaxException ex) {
            throw ex;
        } catch(Exception ex) {
            throw (NonAnalysisException)new NonAnalysisException(ex)
                    .initPosition(iterator.current().coordinates().starting())
                    .Log("ru.bmstu.iu9.compiler.syntax");
        }
    }