Method error

parser/lexer/lexer.go:163–178

(format string, args ...any)

}

func (l *Lexer) error(format string, args ...any) stateFn {
	if l.err == nil { // show first error
		end := l.end.rune
		if l.eof {
			end++
		}
		l.err = &file.Error{
			Location: file.Location{
				From: end - 1,
				To:   end,
			},
			Message: fmt.Sprintf(format, args...),
		}
	}
	return nil
}

func digitVal(ch rune) int {
	switch {