Yamool.CWSharp.RewindStringReader.Peek C# (CSharp) Метод

        public char Peek()
        {
            if (_cursor >= _length)
            {
                return EOF;
            }
            var ch = _s[_cursor];

            return _ignoreCase ? ch : this.Normalize(ch);
        }

            public override Token Next()
            {
                var code = _reader.Read();

                if (code.IsNull())
                {
                    return(null);
                }
                if (code.IsLetterCase() || code.IsNumeralCase())
                {
                    _reader.Seek(_reader.Position - 1);
                    return(base.Next());
                }
                else if (code.IsCjkCase())
                {
                    var nextCode = _reader.Read();
                    if (nextCode.IsNull())
                    {
                        if (_beginState)
                        {
                            return(new Token(code.ToString(), TokenType.CJK));
                        }
                        return(null);
                    }
                    if (nextCode.IsCjkCase())
                    {
                        _beginState = false;
                        if (_reader.Peek().IsCjkCase())
                        {
                            _reader.Seek(_reader.Position - 1);
                        }
                        return(new Token(new string(new char[] { code, nextCode }), TokenType.CJK));
                    }
                    //may be code is a one of letter&numeral&punc.
                    _reader.Seek(_reader.Position - 2);
                    return(base.Next());
                }
                _beginState = true;
                return(new Token(code.ToString(), TokenType.PUNC));
            }