Vendor Hours Grammar (Irony)

VendorHoursGrammar.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Irony.Parsing;

namespace IronyHours
{
    public class HoursGrammar : Grammar
    {
        public HoursGrammar() : base(false)
        {
            //misc
            var COLON = ToTerm(":");

            //days of week
            var sunday = new NonTerminal("sunday");
            var monday = new NonTerminal("monday");
            var tuesday = new NonTerminal("tuesday");
            var wednesday = new NonTerminal("wednesday");
            var thursday = new NonTerminal("thursday");
            var friday = new NonTerminal("friday");
            var saturday = new NonTerminal("saturday");

            sunday.Rule = ToTerm("Su") | ToTerm("Sun") | ToTerm("Sunday");
            monday.Rule = ToTerm("M") | ToTerm("Mon") | ToTerm("Monday");
            tuesday.Rule = ToTerm("Tu") | ToTerm("Tue") | ToTerm("Tues") | ToTerm("Tuesday");
            wednesday.Rule = ToTerm("W") | ToTerm("Wed") | ToTerm("Weds") | ToTerm("Wednesday");
            thursday.Rule = ToTerm("Th") | ToTerm("Thu") | ToTerm("Thur") | ToTerm("Thurs") | ToTerm("Thursday");
            friday.Rule = ToTerm("F") | ToTerm("Fr") | ToTerm("Fri") | ToTerm("Friday");
            saturday.Rule = ToTerm("Sa") | ToTerm("Sat") | ToTerm("Saturday");

            var dayOfWeek = new NonTerminal("dayOfWeek");
            dayOfWeek.Rule = sunday | monday | tuesday | wednesday | thursday | friday | saturday;

            var dayList = new NonTerminal("dayList");
            dayList.Rule = MakePlusRule(dayList, ToTerm(","), dayOfWeek);

            var dayRange = new NonTerminal("dayRange");
            dayRange.Rule = dayOfWeek + "-" + dayOfWeek;

            var dayCouple = new NonTerminal("dayCouple");
            dayCouple.Rule = dayOfWeek + "&" + dayOfWeek;

            //time
            var closed = ToTerm("Closed");

            var time = new TimeLiteral("time");

            var timeRange = new NonTerminal("timeRange");
            timeRange.Rule = time + "-" + time;

            var timeRangeList = new NonTerminal("timeRangeList");
            timeRangeList.Rule = MakePlusRule(timeRangeList, ToTerm(","), timeRange);

            //entries
            var entrySeparator = new NonTerminal("entrySeparator");
            entrySeparator.Rule = COLON | Empty;

            var entryDay = new NonTerminal("entryDay");
            entryDay.Rule = dayList | dayRange | dayCouple;

            var entryTime = new NonTerminal("entryTime");
            entryTime.Rule = timeRangeList | closed;

            var entry = new NonTerminal("entry");
            entry.Rule = entryDay + entrySeparator + entryTime;

            var timeset = new NonTerminal("timeset");
            timeset.Rule = MakeStarRule(timeset, entry);

            var program = new NonTerminal("program");
            program.Rule = timeset | entryTime;

            Root = program;
        }

    }

    public sealed class TimeLiteral : RegexBasedTerminal
    {
        //am/pm is not optional
        const string pattern = @"(?:10|11|12|[1-9])(?:\:[0-5][0-9])?(?: ?[aApP][mM])";

        public TimeLiteral(string name)
            : base(name, pattern)
        {

        }

        public TimeLiteral()
            : base(pattern)
        {

        }
    }
}

@kylefritz basic vendor hours grammar for Irony