Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func WalkFunc ¶
func WalkFunc(n *Node, f NodeVisitorFunc)
WalkFunc is like Walk but accepts just a callback function
Types ¶
type NodeVisitor ¶
type NodeVisitor interface {
Visit(node *Node, entering bool) WalkStatus
}
NodeVisitor is a callback to be called when traversing the syntax tree. Called twice for every node: once with entering=true when the branch is first visited, then with entering=false after all the children are done.
type NodeVisitorFunc ¶
type NodeVisitorFunc func(node *Node, entering bool) WalkStatus
NodeVisitorFunc casts a function to match NodeVisitor interface
func (NodeVisitorFunc) Visit ¶
func (f NodeVisitorFunc) Visit(node *Node, entering bool) WalkStatus
Visit calls visitor function
type WalkStatus ¶
type WalkStatus int
WalkStatus allows NodeVisitor to have some control over the tree traversal. It is returned from NodeVisitor and different values allow Node.Walk to decide which node to go to next.
const ( // GoToNext is the default traversal of every node. GoToNext WalkStatus = iota // SkipChildren tells walker to skip all children of current node. SkipChildren // Terminate tells walker to terminate the traversal. Terminate )
func Walk ¶
func Walk(n *Node, visitor NodeVisitor) WalkStatus
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