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Merge RDoc changes from HEAD.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10679 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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drbrain 2006-08-04 22:00:31 +00:00
parent 4d2d744487
commit 91edcb053b
35 changed files with 361 additions and 321 deletions
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21
lib/weakref.rb
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@ -1,13 +1,13 @@
require "delegate"
# Weak Reference class that does not bother GCing. This allows the
# referenced object to be garbage collected as if nothing else is
# referring to it. Because Weakref inherits from Delegator it passes
# method calls to the object from which it was constructed, so it
# is of the same Duck Type.
# WeakRef is a class to represent a reference to an object that is not seen by
# the tracing phase of the garbage collector. This allows the referenced
# object to be garbage collected as if nothing is referring to it. Because
# WeakRef delegates method calls to the referenced object, it may be used in
# place of that object, i.e. it is of the same duck type.
#
# Usage:
#
# foo = Object.new
# foo = Object.new
# p foo.to_s # original's class
@ -62,9 +62,9 @@ class WeakRef<Delegator
@@id_rev_map[self.__id__] = @__id
end
# Return the object this WeakRef references. Raise
# RefError if this is impossible. The object is that
# to which method calls are delegated (see Delegator).
# Return the object this WeakRef references. Raises RefError if the object
# has been garbage collected. The object returned is the object to which
# method calls are delegated (see Delegator).
def __getobj__
unless @@id_rev_map[self.__id__] == @__id
raise RefError, "Illegal Reference - probably recycled", caller(2)
@ -76,7 +76,8 @@ class WeakRef<Delegator
end
end
# Determine if this Weakref still refers to anything.
# Returns true if the referenced object still exists, and false if it has
# been garbage collected.
def weakref_alive?
@@id_rev_map[self.__id__] == @__id
end