Module: Docscribe::Infer::ASTWalk

Defined in:
lib/docscribe/infer/ast_walk.rb

Overview

AST traversal helpers for parser AST nodes.

Class Method Summary collapse

Class Method Details

.walk(node, &block) {|node| ... } ⇒ void

Note:

module_function: when included, also defines #walk (instance visibility: private)

This method returns an undefined value.

Depth-first walk over a parser AST.

Yields each node exactly once, descending recursively through child nodes. Non-AST values are ignored.

Parameters:

  • node (Parser::AST::Node, nil) —

    root AST node

  • block (Proc) —

    visitor block

Yields:

  • (node) 


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# File 'lib/docscribe/infer/ast_walk.rb', line 18

def walk(node, &block)
  return unless node.is_a?(Parser::AST::Node)

  yield node
  node.children.each do |ch|
    walk(ch, &block) if ch.is_a?(Parser::AST::Node)
  end
end