php-parser/node/expr/n_isset.go

62 lines
1.1 KiB
Go

package expr
import (
"github.com/z7zmey/php-parser/meta"
"github.com/z7zmey/php-parser/node"
"github.com/z7zmey/php-parser/position"
"github.com/z7zmey/php-parser/walker"
)
// Isset node
type Isset struct {
Meta meta.Collection
Position *position.Position
Variables []node.Node
}
// NewIsset node constructor
func NewIsset(Variables []node.Node) *Isset {
return &Isset{
Variables: Variables,
}
}
// SetPosition sets node position
func (n *Isset) SetPosition(p *position.Position) {
n.Position = p
}
// GetPosition returns node positions
func (n *Isset) GetPosition() *position.Position {
return n.Position
}
func (n *Isset) GetMeta() *meta.Collection {
return &n.Meta
}
// Attributes returns node attributes as map
func (n *Isset) Attributes() map[string]interface{} {
return nil
}
// Walk traverses nodes
// Walk is invoked recursively until v.EnterNode returns true
func (n *Isset) Walk(v walker.Visitor) {
if v.EnterNode(n) == false {
return
}
if n.Variables != nil {
v.EnterChildList("Variables", n)
for _, nn := range n.Variables {
if nn != nil {
nn.Walk(v)
}
}
v.LeaveChildList("Variables", n)
}
v.LeaveNode(n)
}