+++ /dev/null
-module ActiveSupport
- module CoreExtensions
- module Module
- # Returns the name of the module containing this one.
- #
- # p M::N.parent_name # => "M"
- def parent_name
- unless defined? @parent_name
- @parent_name = name =~ /::[^:]+\Z/ ? $`.freeze : nil
- end
- @parent_name
- end
-
- # Returns the module which contains this one according to its name.
- #
- # module M
- # module N
- # end
- # end
- # X = M::N
- #
- # p M::N.parent # => M
- # p X.parent # => M
- #
- # The parent of top-level and anonymous modules is Object.
- #
- # p M.parent # => Object
- # p Module.new.parent # => Object
- #
- def parent
- parent_name ? parent_name.constantize : Object
- end
-
- # Returns all the parents of this module according to its name, ordered from
- # nested outwards. The receiver is not contained within the result.
- #
- # module M
- # module N
- # end
- # end
- # X = M::N
- #
- # p M.parents # => [Object]
- # p M::N.parents # => [M, Object]
- # p X.parents # => [M, Object]
- #
- def parents
- parents = []
- if parent_name
- parts = parent_name.split('::')
- until parts.empty?
- parents << (parts * '::').constantize
- parts.pop
- end
- end
- parents << Object unless parents.include? Object
- parents
- end
-
- if RUBY_VERSION < '1.9'
- # Returns the constants that have been defined locally by this object and
- # not in an ancestor. This method is exact if running under Ruby 1.9. In
- # previous versions it may miss some constants if their definition in some
- # ancestor is identical to their definition in the receiver.
- def local_constants
- inherited = {}
-
- ancestors.each do |anc|
- next if anc == self
- anc.constants.each { |const| inherited[const] = anc.const_get(const) }
- end
-
- constants.select do |const|
- !inherited.key?(const) || inherited[const].object_id != const_get(const).object_id
- end
- end
- else
- def local_constants #:nodoc:
- constants(false)
- end
- end
-
- # Returns the names of the constants defined locally rather than the
- # constants themselves. See <tt>local_constants</tt>.
- def local_constant_names
- local_constants.map { |c| c.to_s }
- end
- end
- end
-end