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class << (@@__wrapper = Object.new) # :nodoc:

def inspect

obj = get

"#<WeakRef:#{obj ? obj.inspect : 'dead'}>"

end

def get

@@__map[self]

end

def weakref_alive?

!!@@__map[self]

end

freeze

end

@@__const_wrapper = Struct.new(:get) # :nodoc:

@@__const_wrapper.class_eval do

def weakref_alive?

true

end

end

def self.[](obj)

case obj

when true, false, nil, ::Symbol, ::Fixnum, ::Float

@@__const_wrapper.new(obj)

else

@@__map[w = @@__wrapper.clone] = obj

w

end

end

def self.new(*)

if $VERBOSE

label = caller_locations(1, 1)[0].to_s.freeze

(@__warned ||= {})[label] ||=

begin

warn <<-MSG

#{label}: WeakRef.new with delegation is deprecated, use WeakRef[]

#{label}: instead and use `get' method to achieve the target object.

MSG

true

end

end

super

end