Method save

scanner.go:141–145

(c rune)

}

func (s *scanner) save(c rune) {
	if err := s.buffer.WriteByte(byte(c)); err != nil {
		s.scanError("lexical element too long", 0)
	}
}

func (s *scanner) checkNext(str string) bool {
	if s.current == 0 || !strings.ContainsRune(str, s.current) {