oec/goparsify
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cleanup parseMatcher

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This commit is contained in:
Adam Scarr 2018-06-11 11:33:15 +10:00
parent 268bdd51a1
commit 981f4347b1
1 changed files with 4 additions and 12 deletions
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16
parser.go
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@ -168,13 +168,7 @@ func parseRepetition(defaultMin, defaultMax int, repetition ...int) (min int, ma
// - a set of ranges [][]rune{{'a', 'f'}, {'A', 'F'}}
func parseMatcher(matcher string) (alphabet string, ranges [][]rune) {
runes := []rune(matcher)
i := 0
for {
if i >= len(runes) {
break
}
for i := 0; i < len(runes); {
if i+2 < len(runes) && runes[i+1] == '-' && runes[i] != '\\' {
start := runes[i]
end := runes[i+2]
@ -185,15 +179,13 @@ func parseMatcher(matcher string) (alphabet string, ranges [][]rune) {
}
i += 3 // we just consumed 3 bytes: range start, hyphen, and range end
continue
}
if i+1 < len(runes) && runes[i] == '\\' {
}else if i+1 < len(runes) && runes[i] == '\\' {
alphabet += string(runes[i+1])
i += 2 // we just consumed 2 bytes: escape and the char
} else {
alphabet += string(runes[i])
i +=1
}
i++
}
return alphabet, ranges