php-parser/node/n_nullable.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)
}