From 88b5f938cf7d3eb26ad204451a4dbb9c2cf4f571 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@gmail.com>
Date: Mon, 2 Aug 2010 18:40:20 +0200
Subject: Bring returning back to ease migration.

---
 .../lib/active_support/core_ext/object.rb          |  1 +
 .../active_support/core_ext/object/returning.rb    | 43 ++++++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 activesupport/lib/active_support/core_ext/object/returning.rb

(limited to 'activesupport/lib/active_support')

diff --git a/activesupport/lib/active_support/core_ext/object.rb b/activesupport/lib/active_support/core_ext/object.rb
index 790a26f5c1..d671da6711 100644
--- a/activesupport/lib/active_support/core_ext/object.rb
+++ b/activesupport/lib/active_support/core_ext/object.rb
@@ -2,6 +2,7 @@ require 'active_support/core_ext/object/acts_like'
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/object/duplicable'
 require 'active_support/core_ext/object/try'
+require 'active_support/core_ext/object/returning'
 
 require 'active_support/core_ext/object/conversions'
 require 'active_support/core_ext/object/instance_variables'
diff --git a/activesupport/lib/active_support/core_ext/object/returning.rb b/activesupport/lib/active_support/core_ext/object/returning.rb
new file mode 100644
index 0000000000..07250b2a27
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/returning.rb
@@ -0,0 +1,43 @@
+class Object
+  # Returns +value+ after yielding +value+ to the block. This simplifies the
+  # process of constructing an object, performing work on the object, and then
+  # returning the object from a method. It is a Ruby-ized realization of the K
+  # combinator, courtesy of Mikael Brockman.
+  #
+  # ==== Examples
+  #
+  #  # Without returning
+  #  def foo
+  #    values = []
+  #    values << "bar"
+  #    values << "baz"
+  #    return values
+  #  end
+  #
+  #  foo # => ['bar', 'baz']
+  #
+  #  # returning with a local variable
+  #  def foo
+  #    returning values = [] do
+  #      values << 'bar'
+  #      values << 'baz'
+  #    end
+  #  end
+  #
+  #  foo # => ['bar', 'baz']
+  #  
+  #  # returning with a block argument
+  #  def foo
+  #    returning [] do |values|
+  #      values << 'bar'
+  #      values << 'baz'
+  #    end
+  #  end
+  #  
+  #  foo # => ['bar', 'baz']
+  def returning(value)
+    ActiveSupport::Deprecation.warn('Object#returning has been deprecated in favor of Object#tap.', caller)
+    yield(value)
+    value
+  end
+end
\ No newline at end of file
-- 
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