_Core/Lang/Plugins/System/FunctionPlugin.cs

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

namespace ComLib.Lang
{
    /// <summary>
    /// Plugin for throwing errors from the script.
    /// </summary>
    public class FuncDeclarePlugin : StmtBlockPlugin, IParserCallbacks
    {
        private static string[] _tokens = new string[] { "function" };


        /// <summary>
        /// Intialize.
        /// </summary>
        public FuncDeclarePlugin()
        {
            _startTokens = _tokens;
            _isSystemLevel = true;
            _supportsBlock = true;
        }


        /// <summary>
        /// The grammer for the function declaration
        /// </summary>
        public override string Grammer
        {
            get { return "function ( <id> | <stringliteral> ) ( ',' ( <id> | <stringliteral> ) )* <statementblock>"; }
        }


        /// <summary>
        /// Examples
        /// </summary>
        public override string[] Examples
        {
            get
            {
                return new string[]
                {
                    "function hour( num ) { ... }",
                    "function hours, hour, hrs, hr( num ) { ... }",
                    "function order_toBuy, 'order to buy'( num ) { ... }"
                };
            }
        }


        /// <summary>
        /// return value;
        /// </summary>
        /// <returns></returns>
        public override Stmt Parse()
        {
            return Parse(_tokenIt.NextToken, true);
        }