_Core/Lang/Plugins/Parser/DateNumberPlugin.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ComLib.Lang;


namespace ComLib.Lang.Extensions
{

    /* *************************************************************************
    <doc:example>	
    // Date number plugin allow you to specify dates in the form of numbers as 
    // samples below.
    // The separator between months/days/years can be "/", "-", "\"
    
    var date1 = 1/27/1978;
    var date2 = 4-20-1979 at 4:30pm;
    var date3 = 6\10\2012 at 7:45am;
    
    </doc:example>
    ***************************************************************************/

    /// <summary>
    /// Combinator for handling date numbers such as 1/27/1978
    /// </summary>
    public class DateNumberPlugin : LexPlugin
    {
        private static Dictionary<string, string> _keywords = new Dictionary<string, string>();
        private int _endPos = -1;

        /// <summary>
        /// Initialize
        /// </summary>
        public DateNumberPlugin()
        {
            _tokens = new string[] { "$NumberToken" };
            _canHandleToken = true;
        }


        /// <summary>
        /// Whether or not this uri plugin can handle the current token.
        /// </summary>
        /// <param name="current"></param>
        /// <returns></returns>
        public override bool  CanHandle(Token current)
        {            
            _endPos = -1;
            
            string next = "";
            int pos = _lexer.State.Pos + 1;

            // Check position.
            if (pos > _lexer.LAST_POSITION)
                return false;

            char n = _lexer.State.Text[pos];
            
            // Check that the next char is date part separator as in 3/10/2012 or 3-10-2012