walk

Documentation

Overview

walk provides functions for visiting the nodes of an ADT tree.

Index

• func Features(x adt.Expr, f func(label adt.Feature, src adt.Node))
• type Visitor
  • func (w *Visitor) Elem(x adt.Elem)

Functions

func Features

func Features(x adt.Expr, f func(label adt.Feature, src adt.Node))

Features calls f for all features used in x and indicates whether the feature is used as a reference or not.

Types

type Visitor

type Visitor struct {
	// Feature is invoked for all field names.
	Feature func(f adt.Feature, src adt.Node)

	// Before is invoked for all nodes in pre-order traversal.
	// Returning false prevents the visitor from visiting the node's
	// children.
	Before func(adt.Node) bool
}

A Visitor walks over all elements in an ADT, recursively.

func (*Visitor) Elem

func (w *Visitor) Elem(x adt.Elem)