gitea/vendor/github.com/go-xorm/builder/cond_not.go
2016-11-04 08:43:11 +01:00

45 lines
710 B
Go

package builder
import "fmt"
type Not [1]Cond
var _ Cond = Not{}
func (not Not) WriteTo(w Writer) error {
if _, err := fmt.Fprint(w, "NOT "); err != nil {
return err
}
switch not[0].(type) {
case condAnd, condOr:
if _, err := fmt.Fprint(w, "("); err != nil {
return err
}
}
if err := not[0].WriteTo(w); err != nil {
return err
}
switch not[0].(type) {
case condAnd, condOr:
if _, err := fmt.Fprint(w, ")"); err != nil {
return err
}
}
return nil
}
func (not Not) And(conds ...Cond) Cond {
return And(not, And(conds...))
}
func (not Not) Or(conds ...Cond) Cond {
return Or(not, Or(conds...))
}
func (not Not) IsValid() bool {
return not[0] != nil && not[0].IsValid()
}