36 lines
617 B
Go
36 lines
617 B
Go
package node
|
|
|
|
import "github.com/z7zmey/php-parser/walker"
|
|
|
|
// Nullable node
|
|
type Nullable struct {
|
|
Expr Node
|
|
}
|
|
|
|
// NewNullable node constuctor
|
|
func NewNullable(Expression Node) *Nullable {
|
|
return &Nullable{
|
|
Expression,
|
|
}
|
|
}
|
|
|
|
// Attributes returns node attributes as map
|
|
func (n *Nullable) Attributes() map[string]interface{} {
|
|
return nil
|
|
}
|
|
|
|
// Walk traverses nodes
|
|
// Walk is invoked recursively until v.EnterNode returns true
|
|
func (n *Nullable) Walk(v walker.Visitor) {
|
|
if v.EnterNode(n) == false {
|
|
return
|
|
}
|
|
|
|
if n.Expr != nil {
|
|
vv := v.GetChildrenVisitor("Expr")
|
|
n.Expr.Walk(vv)
|
|
}
|
|
|
|
v.LeaveNode(n)
|
|
}
|