Function concatStrings

value.go:179–200

(a, b valueString)

}

func concatStrings(a, b valueString) valueString {
	aLen := a.length()
	bLen := b.length()
	if aLen == 0 {
		return b
	} else if bLen == 0 {
		return a
	} else if aLen+bLen < extendedStringMinLength {
		runesA := a.getRunes()
		runesB := b.getRunes()
		result := make([]rune, 0, aLen+bLen)
		result = append(result, runesA...)
		result = append(result, runesB...)
		return makeStringFromRunes(result)
	} else {
		return &valueStringTree{
			left:  a,
			right: b,
			len:   aLen + bLen,
		}
	}
}

func stringCmp(a, b valueString) int {
	runesA := a.getRunes()