SyntaxAnalyse/TokenRecord/TokenFactory/TokenKeywordFactory.cs

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//xxxxxxxxxxx
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Reflection;

namespace ConExpress.Calculator
{
    /// <summary>
    /// 关键字工厂
    /// </summary>
    /// <remarks>xxxxxxxxx</remarks>
    internal class TokenKeywordFactory : TokenFactory
    {
        private static SortedDictionary<string, string> m_DictionaryKeyword = new SortedDictionary<string, string>();
        /// <summary>
        /// 获取关键字字典
        /// </summary>
        /// <returns>关键字字典</returns>
        /// <remarks>xxxxxxxxx; Date:2008-5-19;</remarks>
        internal static SortedDictionary<string, string> GetKeywordDictionary()
        {
            if (m_DictionaryKeyword.Count == 0)
            {
                m_DictionaryKeyword = TokenFactory.GetOperateTokenDictionary(OperateTokenTypeEnum.TokenKeyword);
            }

            return m_DictionaryKeyword;
        }


        /// <summary>
        /// 词法分析
        /// </summary>
        /// <param name="TokenList">记号对象列表</param>
        /// <param name="Code">源表达式</param>
        /// <param name="Index">分析序号</param>
        /// <remarks>xxxxxxxxx</remarks>
        public static new void LexicalAnalysis(List<TokenRecord> TokenList, string Code, ref int Index)
        {
            int intIndexCurrent = Index;//当前序号
            bool blnContinue = true;
            //string strTempChar = "";//获取临时字符
            char chrTemp;
            string strTempWord = "";//获取临时字符串

            while (blnContinue && intIndexCurrent < Code.Length)
            {
                chrTemp = Code[intIndexCurrent];
                //关键字支持大小写字母及数字，但不允许以数字开头
                if (char.IsLetter(chrTemp) || char.IsDigit(chrTemp))
                {
                    intIndexCurrent += 1;//把当前序号后移
                }
                else
                {
                    blnContinue = false;
                }
            }