/// <summary>
/// Visit a parse tree produced by the <c>ChangeSign</c>
/// labeled alternative in <see cref="CalculatorParser.unaryMinus"/>.
/// <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 VisitChangeSign([NotNull] CalculatorParser.ChangeSignContext context)
{
return(VisitChildren(context));
}
public override decimal VisitChangeSign([NotNull] CalculatorParser.ChangeSignContext context)
{
return(-1m * Visit(context.unaryMinus()));
}