diff options
Diffstat (limited to 'lib/weakref.rb')
| -rw-r--r-- | lib/weakref.rb | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/lib/weakref.rb b/lib/weakref.rb index 78f88a3f12..c7274f9664 100644 --- a/lib/weakref.rb +++ b/lib/weakref.rb @@ -1,20 +1,24 @@ +# frozen_string_literal: true require "delegate" # Weak Reference class that allows a referenced object to be -# garbage-collected. A WeakRef may be used exactly like the object it -# references. +# garbage-collected. +# +# A WeakRef may be used exactly like the object it references. # # Usage: # -# foo = Object.new -# foo = Object.new +# foo = Object.new # create a new object instance # p foo.to_s # original's class -# foo = WeakRef.new(foo) +# foo = WeakRef.new(foo) # reassign foo with WeakRef instance # p foo.to_s # should be same class -# ObjectSpace.garbage_collect +# GC.start # start the garbage collector # p foo.to_s # should raise exception (recycled) +# class WeakRef < Delegator + # The version string + VERSION = "0.1.4" ## # RefError is raised when a referenced object has been recycled by the @@ -38,7 +42,7 @@ class WeakRef < Delegator super end - def __getobj__ # :nodoc: + def __getobj__(&_block) # :nodoc: @@__map[self] or defined?(@delegate_sd_obj) ? @delegate_sd_obj : Kernel::raise(RefError, "Invalid Reference - probably recycled", Kernel::caller(2)) end @@ -50,17 +54,6 @@ class WeakRef < Delegator # Returns true if the referenced object is still alive. def weakref_alive? - !!(@@__map[self] or defined?(@delegate_sd_obj)) + @@__map.key?(self) or defined?(@delegate_sd_obj) end end - -if __FILE__ == $0 -# require 'thread' - foo = Object.new - p foo.to_s # original's class - foo = WeakRef.new(foo) - p foo.to_s # should be same class - ObjectSpace.garbage_collect - ObjectSpace.garbage_collect - p foo.to_s # should raise exception (recycled) -end |