public override BaseExpression VisitUnary([NotNull] ExpressionParser.UnaryContext context)
{
BaseExpression ret = Visit(context.factor());
if (context.MINUS() != null)
{
ret = new BinaryOpExpression(new NumberExpression(decimal.MinusOne), BinaryOp.Multiply, ret);
}
return(ret);
}
/// <summary>
/// Visit a parse tree produced by <see cref="ExpressionParser.unary"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitUnary([NotNull] ExpressionParser.UnaryContext context)
{
return(VisitChildren(context));
}