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Tag: v4.0.1.rc2
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require 'active_support/inflector'
class Module
# Returns the name of the module containing this one.
#
# M::N.parent_name # => "M"
def parent_name
if defined? @parent_name
@parent_name
else
@parent_name = name =~ /::[^:]+\Z/ ? $`.freeze : nil
end
end
# Returns the module which contains this one according to its name.
#
# module M
# module N
# end
# end
# X = M::N
#
# M::N.parent # => M
# X.parent # => M
#
# The parent of top-level and anonymous modules is Object.
#
# M.parent # => Object
# Module.new.parent # => Object
def parent
parent_name ? ActiveSupport::Inflector.constantize(parent_name) : 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
#
# M.parents # => [Object]
# M::N.parents # => [M, Object]
# X.parents # => [M, Object]
def parents
parents = []
if parent_name
parts = parent_name.split('::')
until parts.empty?
parents << ActiveSupport::Inflector.constantize(parts * '::')
parts.pop
end
end
parents << Object unless parents.include? Object
parents
end
def local_constants #:nodoc:
constants(false)
end
# *DEPRECATED*: Use +local_constants+ instead.
#
# Returns the names of the constants defined locally as strings.
#
# module M
# X = 1
# end
# M.local_constant_names # => ["X"]
#
# This method is useful for forward compatibility, since Ruby 1.8 returns
# constant names as strings, whereas 1.9 returns them as symbols.
def local_constant_names
ActiveSupport::Deprecation.warn 'Module#local_constant_names is deprecated, use Module#local_constants instead'
local_constants.map { |c| c.to_s }
end
end
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