Module: RuboCop::AST::Traversal

Relationships & Source Files
Namespace Children
Modules: `CallbackCompiler`
Exceptions: `DebugError`
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `CallbackCompiler`
Defined in:	lib/rubocop/ast/traversal.rb

Overview

Provides methods for traversing an AST. Does not transform an AST; for that, use Parser::AST::Processor. Override methods to perform custom processing. Remember to call super if you want to recursively process descendant nodes.

Constant Summary

MISSING =
# File 'lib/rubocop/ast/traversal.rb', line 189
```
to_define
```
NO_CHILD_NODES = private
# File 'lib/rubocop/ast/traversal.rb', line 109
```
(no_children + opt_symbol_child + literal_child).to_set.freeze
```
TYPE_TO_METHOD =
# File 'lib/rubocop/ast/traversal.rb', line 15
```
Hash.new { |h, type| h[type] = :"on_#{type}" }
```

Class Method Summary

`CallbackCompiler` - Extended

body, children_count_check_code, def_callback

Instance Method Summary

#walk(node)

Instance Method Details

#walk(node)

[ GitHub ]

# File 'lib/rubocop/ast/traversal.rb', line 17


def walk(node)
  return if node.nil?

  send(TYPE_TO_METHOD[node.type], node)
  nil
end