Class: Prism::BasicVisitor

Inherits:
Object
  • Object
show all
Defined in:
lib/prism/visitor.rb

Overview

A class that knows how to walk down the tree. None of the individual visit methods are implemented on this visitor, so it forces the consumer to implement each one that they need. For a default implementation that continues walking the tree, see the Visitor class.

Direct Known Subclasses

Visitor

Instance Method Summary collapse

Instance Method Details

#visit(node) ⇒ Object

Calls accept on the given node if it is not nil, which in turn should call back into this visitor by calling the appropriate visit_* method.



17
18
19
20
 
# File 'lib/prism/visitor.rb', line 17

def visit(node)
  # @type self: _Visitor
  node&.accept(self)
end

#visit_all(nodes) ⇒ Object

Visits each node in nodes by calling accept on each one.



23
24
25
26
 
# File 'lib/prism/visitor.rb', line 23

def visit_all(nodes)
  # @type self: _Visitor
  nodes.each { |node| node&.accept(self) }
end

#visit_child_nodes(node) ⇒ Object

Visits the child nodes of node by calling accept on each one.



29
30
31
32
 
# File 'lib/prism/visitor.rb', line 29

def visit_child_nodes(node)
  # @type self: _Visitor
  node.compact_child_nodes.each { |node| node.accept(self) }
end