parse.gno

 1package game
 2
 3// indexFrom returns the index of the first c in s at or after i, or len(s)
 4// when there is none.
 5func indexFrom(s string, i int, c byte) int {
 6	for i < len(s) && s[i] != c {
 7		i++
 8	}
 9	return i
10}
11
12// digits parses a non-empty string of decimal digits. Kill counts are never
13// negative, so there is no sign to read.
14func digits(s string) (int64, bool) {
15	if len(s) == 0 {
16		return 0, false
17	}
18	n := int64(0)
19	for i := 0; i < len(s); i++ {
20		c := s[i]
21		if c < '0' || c > '9' {
22			return 0, false
23		}
24		n = n*10 + int64(c-'0')
25	}
26	return n, true
27}