class RuboCop::Cop::Style::ConstantVisibility

end
public_constant :BAZ
BAZ = 43
private_constant :BAR
BAR = 42
class Foo
# good
end
BAZ = 43
BAR = 42
class Foo
# bad
@example
clear, and prevents outside actors from touching private state.
class or module. Explicitly declaring a visibility makes intent more
and module constants public, which litters the public API of the
an explicit visibility declaration. By default, Ruby makes all class-
This cop checks that constants defined in classes and modules have

def class_or_module_scope?(node)

def class_or_module_scope?(node)
  node.parent && %i[class module].include?(node.parent.type)
end

def message(node)

def message(node)
  _namespace, constant_name, _value = *node
  format(MSG, constant_name: constant_name)
end

def on_casgn(node)

def on_casgn(node)
  return unless class_or_module_scope?(node)
  return if visibility_declaration?(node)
  add_offense(node)
end

def visibility_declaration?(node)

def visibility_declaration?(node)
  _namespace, constant_name, _value = *node
  node.parent.each_child_node(:send).any? do |child|
    visibility_declaration_for?(child, constant_name)
  end
end