php-parser/node/expr/n_empty.go
2018-06-19 22:56:52 +03:00

40 lines
668 B
Go

package expr
import (
"github.com/z7zmey/php-parser/node"
"github.com/z7zmey/php-parser/walker"
)
// Empty node
type Empty struct {
Expr node.Node
}
// NewEmpty node constructor
func NewEmpty(Expression node.Node) *Empty {
return &Empty{
Expression,
}
}
// Attributes returns node attributes as map
func (n *Empty) Attributes() map[string]interface{} {
return nil
}
// Walk traverses nodes
// Walk is invoked recursively until v.EnterNode returns true
func (n *Empty) Walk(v walker.Visitor) {
if v.EnterNode(n) == false {
return
}
if n.Expr != nil {
v.EnterChildNode("Expr", n)
n.Expr.Walk(v)
v.LeaveChildNode("Expr", n)
}
v.LeaveNode(n)
}