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#--
#
# 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
return @hash
end
def ==(other)
case(other)
when ProcWrapper
return @a_proc == other.to_proc
else
return super
end
end
alias :eql? :==
def to_proc
return @a_proc
end
end
end
end
end
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