funcs.go

// goodName reports whether the function name is a valid identifier.
func goodName(name string) bool {
	if name == "" {
		return false
	}
	for i, r := range name {
		switch {
		case r == '_':
		case i == 0 && !unicode.IsLetter(r):
			return false
		case !unicode.IsLetter(r) && !unicode.IsDigit(r):
			return false
		}
	}
	return true
}