_Core/Lang/Plugins/Parser/SwapPlugin.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>	
    // Swap plugin provides 1 line statement to swap variables.
    
    var a = 1, b = 2;
    
    // Swap values in 1 statement.
    // Instead of needing a third variable.
    swap a with b;
    
    
    </doc:example>
    ***************************************************************************/

    /// <summary>
    /// Combinator for handling swapping of variable values. swap a and b.
    /// </summary>
    public class SwapPlugin : ExprPlugin
    {
        private static string[] _tokens = new string[] { "swap", "Swap" };


        /// <summary>
        /// Intialize.
        /// </summary>
        public SwapPlugin()
        {
            _hasStatementSupport = true;
            _canHandleExpression = true;
            _startTokens = _tokens;
        }


        /// <summary>
        /// The grammer for the function declaration
        /// </summary>
        public override string Grammer
        {
            get
            {
                return "swap <id> with <id> <statementtermninator>";
            }
        }


        /// <summary>
        /// Examples
        /// </summary>
        public override string[] Examples
        {