Method parseIntSafely

core/src/main/java/io/questdb/std/Numbers.java:1376–1412

(CharSequence sequence, final int p, int lim)

    }

    public static long parseIntSafely(CharSequence sequence, final int p, int lim) throws NumericException {
        if (lim == p) {
            throw NumericException.instance().put("empty number string");
        }

        boolean negative = sequence.charAt(p) == '-';
        int i = p;
        if (negative) {
            i++;
        }

        if (i >= lim || notDigit(sequence.charAt(i))) {
            throw NumericException.instance().put("not a number: ").put(sequence);
        }

        int val = 0;
        for (; i < lim; i++) {
            char c = sequence.charAt(i);

            if (notDigit(c)) {
                break;
            }

            // val * 10 + (c - '0')
            int r = (val << 3) + (val << 1) - (c - '0');
            if (r > val) {
                throw NumericException.instance().put("number overflow");
            }
            val = r;
        }

        if (val == Integer.MIN_VALUE && !negative) {
            throw NumericException.instance().put("number overflow");
        }

        return encodeLowHighInts(negative ? val : -val, i - p);
    }

    public static int parseIntSize(CharSequence sequence) throws NumericException {
        int lim = sequence.length();