io.IoLexer.readIdentifier C# (CSharp) Method

        public int readIdentifier()
        {
            pushPos();
            while (readLetter() != 0 || readDigit() != 0 || readSpecialChar() != 0);
            if (grabLength() != 0)
            {
                if (s[currentPos - 1] == ':' && s[currentPos] == '=') prevChar();
                grabTokenType(IoTokenType.IDENTIFIER_TOKEN);
                popPos();
                return 1;
            }
             			return 0;
        }