TokenInfo.cs

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namespace System.Xml.Xsl.Runtime;
 
internal sealed class TokenInfo
{
    public char startChar;
 
    public int startIdx;
 
    public string formatString;
 
    public int length;
 
    private TokenInfo()
    {
    }
 
    public static TokenInfo CreateSeparator(string formatString, int startIdx, int tokLen)
    {
        TokenInfo tokenInfo = new TokenInfo();
        tokenInfo.startIdx = startIdx;
        tokenInfo.formatString = formatString;
        tokenInfo.length = tokLen;
        return tokenInfo;
    }
 
    public static TokenInfo CreateFormat(string formatString, int startIdx, int tokLen)
    {
        TokenInfo tokenInfo = new TokenInfo();
        tokenInfo.formatString = null;
        tokenInfo.length = 1;
        bool flag = false;
        char c = formatString[startIdx];
        switch (c)
        {
        default:
            if (CharUtil.IsDecimalDigitOne(c))
            {
                break;
            }
            if (CharUtil.IsDecimalDigitOne((char)(c + 1)))
            {
                int num = startIdx;
                do
                {
                    tokenInfo.length++;
                }
                while (--tokLen > 0 && c == formatString[++num]);
                if (formatString[num] == (c = (char)(c + 1)))
                {
                    break;
                }
            }
            flag = true;
            break;
        case '1':
        case 'A':
        case 'I':
        case 'a':
        case 'i':
            break;
        }
        if (tokLen != 1)
        {
            flag = true;
        }
        if (flag)
        {
            tokenInfo.startChar = '1';
            tokenInfo.length = 1;
        }
        else
        {
            tokenInfo.startChar = c;
        }
        return tokenInfo;
    }
}