45 lines
710 B
Go
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()
|
|
}
|