io.IoLexer.readDecimal C# (CSharp) Method

        public int readDecimal()
        {
            pushPos();

            if (readDigits()!=0)
            {
                if (readDecimalPlaces() == -1)
                {
                    goto error;
                }
            }
            else
            {
                if (readDecimalPlaces() != 1)
                {
                    goto error;
                }
            }

            if (readExponent() == -1)
            {
                goto error;
            }

            if (grabLength()!=0)
            {
                grabTokenType(IoTokenType.NUMBER_TOKEN);
                popPos();
                return 1;
            }
            error:
            popPosBack();
            return 0;
        }