/usr/lib/ruby/vendor_ruby/active_support/core_ext/module/qualified_const.rb is in ruby-activesupport-3.2 3.2.16-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | require 'active_support/core_ext/string/inflections'
#--
# Allows code reuse in the methods below without polluting Module.
#++
module QualifiedConstUtils
def self.raise_if_absolute(path)
raise NameError, "wrong constant name #$&" if path =~ /\A::[^:]+/
end
def self.names(path)
path.split('::')
end
end
##
# Extends the API for constants to be able to deal with qualified names. Arguments
# are assumed to be relative to the receiver.
#
#--
# Qualified names are required to be relative because we are extending existing
# methods that expect constant names, ie, relative paths of length 1. For example,
# Object.const_get("::String") raises NameError and so does qualified_const_get.
#++
class Module
if method(:const_defined?).arity == 1
def qualified_const_defined?(path)
QualifiedConstUtils.raise_if_absolute(path)
QualifiedConstUtils.names(path).inject(self) do |mod, name|
return unless mod.const_defined?(name)
mod.const_get(name)
end
return true
end
else
def qualified_const_defined?(path, search_parents=true)
QualifiedConstUtils.raise_if_absolute(path)
QualifiedConstUtils.names(path).inject(self) do |mod, name|
return unless mod.const_defined?(name, search_parents)
mod.const_get(name)
end
return true
end
end
def qualified_const_get(path)
QualifiedConstUtils.raise_if_absolute(path)
QualifiedConstUtils.names(path).inject(self) do |mod, name|
mod.const_get(name)
end
end
def qualified_const_set(path, value)
QualifiedConstUtils.raise_if_absolute(path)
const_name = path.demodulize
mod_name = path.deconstantize
mod = mod_name.empty? ? self : qualified_const_get(mod_name)
mod.const_set(const_name, value)
end
end
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