Function expectToken

parser/parser.go:841–850

(s *scanner, id int)

}

func expectToken(s *scanner, id int) (*token, error) {
	if !s.Next() {
		return nil, fmt.Errorf("cannot find token %s: %v", tokenIDToStr(id), s.LastError())
	}
	t := s.Token()
	if t.ID != id {
		return nil, fmt.Errorf("unexpected token found %s. Expecting %s at %s", t, tokenIDToStr(id), s.Context())
	}
	return t, nil
}

func validateOutputTagValue(stmt []byte) error {
	exprStr := string(stmt)