added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 48 insertions, 0 deletions

diff --git a/trunk/lib/test/unit/util/procwrapper.rb b/trunk/lib/test/unit/util/procwrapper.rb
new file mode 100644
index 0000000000..ad3b4d8a6f
--- /dev/null
+++ b/trunk/lib/test/unit/util/procwrapper.rb
@@ -0,0 +1,48 @@
+#--
+#
+# Author:: Nathaniel Talbott.
+# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.
+# License:: Ruby license.
+
+module Test
+  module Unit
+    module Util
+
+      # Allows the storage of a Proc passed through '&' in a
+      # hash.
+      #
+      # Note: this may be inefficient, since the hash being
+      # used is not necessarily very good. In Observable,
+      # efficiency is not too important, since the hash is
+      # only accessed when adding and removing listeners,
+      # not when notifying.
+
+      class ProcWrapper
+
+        # Creates a new wrapper for a_proc.
+        def initialize(a_proc)
+          @a_proc = a_proc
+          @hash = a_proc.inspect.sub(/^(#<#{a_proc.class}:)/, '').sub(/(>)$/, '').hex
+        end
+
+        def hash # :nodoc:
+          return @hash
+        end
+
+        def ==(other) # :nodoc:
+          case(other)
+            when ProcWrapper
+              return @a_proc == other.to_proc
+            else
+              return super
+          end
+        end
+        alias :eql? :==
+
+        def to_proc # :nodoc:
+          return @a_proc
+        end
+      end
+    end
+  end
+end