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| author | David Heinemeier Hansson <david@loudthinking.com> | 2006-02-04 19:14:53 +0000 |
|---|---|---|
| committer | David Heinemeier Hansson <david@loudthinking.com> | 2006-02-04 19:14:53 +0000 |
| commit | 2ee6229bd8cf3a87ede0cd8b573e3faf5a15dbfa (patch) | |
| tree | 6448472533f1bc97162e3d498281a306030a932a /activesupport/lib/active_support | |
| parent | 5cbc062c8ad82271de11ae245d2bdaeffc0c4da7 (diff) | |
| download | rails-2ee6229bd8cf3a87ede0cd8b573e3faf5a15dbfa.tar.gz rails-2ee6229bd8cf3a87ede0cd8b573e3faf5a15dbfa.tar.bz2 rails-2ee6229bd8cf3a87ede0cd8b573e3faf5a15dbfa.zip | |
Added delegation support to Module that allows multiple delegations at once (unlike Forwardable in the stdlib) [DHH]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3535 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activesupport/lib/active_support')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/module.rb | 3 | ||||
| -rw-r--r-- | activesupport/lib/active_support/core_ext/module/delegation.rb | 16 |
2 files changed, 18 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/module.rb b/activesupport/lib/active_support/core_ext/module.rb index 0f46631e65..bd6d62468a 100644 --- a/activesupport/lib/active_support/core_ext/module.rb +++ b/activesupport/lib/active_support/core_ext/module.rb @@ -1,2 +1,3 @@ require File.dirname(__FILE__) + '/module/inclusion' -require File.dirname(__FILE__) + '/module/attribute_accessors'
\ No newline at end of file +require File.dirname(__FILE__) + '/module/attribute_accessors' +require File.dirname(__FILE__) + '/module/delegation'
\ No newline at end of file diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb new file mode 100644 index 0000000000..95173007ca --- /dev/null +++ b/activesupport/lib/active_support/core_ext/module/delegation.rb @@ -0,0 +1,16 @@ +class Module + def delegate(*methods) + options = methods.pop + unless options.is_a?(Hash) && to = options[:to] + raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key" + end + + methods.each do |method| + module_eval(<<-EOS, "(__DELEGATION__)", 1) + def #{method}(*args, &block) + #{to}.__send__(#{method.inspect}, *args, &block) + end + EOS + end + end +end
\ No newline at end of file |