private Node VisitUnaryOperands(MetaCodeParser.ExpressionContext expression, IToken @operator)
{
if (new object[] { expression, @operator }.Any(value => value == null))
return null;
var expr = expression.Accept(this) as ExpressionNode;
var op = @operator.Text;
return ExpressionFactory.UnaryOperand(expr, op);
}
private Node VisitBinaryOperands(MetaCodeParser.ExpressionContext left, MetaCodeParser.ExpressionContext right,
IToken @operator)
{
if (new object[] { left, right, @operator }.Any(obj => obj == null))
return null;
var leftExpression = left.Accept(this) as ExpressionNode;
var rightExpression = right.Accept(this) as ExpressionNode;
var operatorText = @operator.Text;
return ExpressionFactory.BinaryOperand(leftExpression, rightExpression, operatorText);
}