diff options
author | Yehuda Katz and Carl Lerche <wycats@gmail.com> | 2009-04-07 14:57:18 -0700 |
---|---|---|
committer | Yehuda Katz and Carl Lerche <wycats@gmail.com> | 2009-04-07 14:57:18 -0700 |
commit | c1aa5b0e14cd4bd27a5d8bd85cf7c36fa5911830 (patch) | |
tree | c4d08a6227e5a39cb65726fa40c2c54516068d24 /activesupport/lib/active_support/core_ext/module | |
parent | 9c8eaf8e254cf8ccaa6ecae3fdf1f468fbb60db8 (diff) | |
download | rails-c1aa5b0e14cd4bd27a5d8bd85cf7c36fa5911830.tar.gz rails-c1aa5b0e14cd4bd27a5d8bd85cf7c36fa5911830.tar.bz2 rails-c1aa5b0e14cd4bd27a5d8bd85cf7c36fa5911830.zip |
Add depends_on, use, and setup to abstract up ideas about module inheritance.
Diffstat (limited to 'activesupport/lib/active_support/core_ext/module')
-rw-r--r-- | activesupport/lib/active_support/core_ext/module/setup.rb | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/setup.rb b/activesupport/lib/active_support/core_ext/module/setup.rb new file mode 100644 index 0000000000..e6dfd0cf56 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/module/setup.rb @@ -0,0 +1,26 @@ +class Module + attr_accessor :_setup_block + attr_accessor :_dependencies + + def setup(&blk) + @_setup_block = blk + end + + def use(mod) + return if self < mod + + (mod._dependencies || []).each do |dep| + use dep + end + # raise "Circular dependencies" if self < mod + include mod + extend mod.const_get("ClassMethods") if mod.const_defined?("ClassMethods") + class_eval(&mod._setup_block) if mod._setup_block + end + + def depends_on(mod) + return if self < mod + @_dependencies ||= [] + @_dependencies << mod + end +end
\ No newline at end of file |