3 MEMOIZED_IVAR
= Proc
.new
do |symbol
|
4 "@_memoized_#{symbol.to_s.sub(/\?\Z/, '_query').sub(/!\Z/, '_bang')}".to_sym
8 def self.included(base
)
10 unless base
.method_defined
?(:freeze_without_memoizable)
11 alias_method_chain
:freeze, :memoizable
16 def freeze_with_memoizable
17 memoize_all
unless frozen
?
18 freeze_without_memoizable
23 if m
.to_s
=~
/^_unmemoized_(.*)/
24 if method(m
).arity
== 0
27 ivar
= MEMOIZED_IVAR
.call($1)
28 instance_variable_set(ivar
, {})
36 if m
.to_s
=~
/^_unmemoized_(.*)/
37 ivar
= MEMOIZED_IVAR
.call($1)
38 instance_variable_get(ivar
).clear
if instance_variable_defined
?(ivar
)
45 symbols
.each
do |symbol
|
46 original_method
= :"_unmemoized_#{symbol}"
47 memoized_ivar
= MEMOIZED_IVAR
.call(symbol
)
49 class_eval
<<-EOS, __FILE__, __LINE__
52 raise "Already memoized #{symbol}" if method_defined?(:#{original_method})
53 alias #{original_method} #{symbol}
55 if instance_method(:#{symbol}).arity == 0
56 def #{symbol}(reload = false)
57 if reload || !defined?(#{memoized_ivar}) || #{memoized_ivar}.empty?
58 #{memoized_ivar} = [#{original_method}.freeze]
64 #{memoized_ivar} ||= {} unless frozen?
65 reload = args.pop if args.last == true || args.last == :reload
67 if defined?(#{memoized_ivar}) && #{memoized_ivar}
68 if !reload && #{memoized_ivar}.has_key?(args)
69 #{memoized_ivar}[args]
70 elsif #{memoized_ivar}
71 #{memoized_ivar}[args] = #{original_method}(*args).freeze
74 #{original_method}(*args)