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