Function trimCurlyBrackets

stack/context.go:1190–1203

trimCurlyBrackets is the faster equivalent of bytes.TrimRight(bytes.TrimLeft(s, "{"), "}"). The function also returns the number of curly brackets trimmed from the left and the right.

(s []byte)

// also returns the number of curly brackets trimmed from the
// left and the right.
func trimCurlyBrackets(s []byte) (int, []byte, int) {
	i, j := 0, len(s)
	for ; i < j; i++ {
		if s[i] != '{' {
			break
		}
	}
	for ; i < j; j-- {
		if s[j-1] != '}' {
			break
		}
	}
	return i, s[i:j], len(s) - j
}

// unsafeString performs an unsafe conversion from a []byte to a string. The
// returned string will share the underlying memory with the []byte which thus