public override Maybe<Result> VisitNot_expr(QueryParser.Not_exprContext context) => context.NOT() != null
? Visit(context.not_expr()).Bind(n => n.Negate().Just())
: Visit(context.bool_expr());
/// <summary>
/// Visit a parse tree produced by <see cref="QueryParser.not_expr"/>.
/// <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 VisitNot_expr([NotNull] QueryParser.Not_exprContext context)
{
return(VisitChildren(context));
}