blob: 67ed10d58db6fdccc55dc17170d3605a922cdf5b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
module ActiveSupport
module Memoizable
def self.memoized_ivar_for(symbol)
"@_memoized_#{symbol.to_s.sub(/\?\Z/, '_query').sub(/!\Z/, '_bang')}".to_sym
end
module InstanceMethods
def self.included(base)
base.class_eval do
unless base.method_defined?(:freeze_without_memoizable)
alias_method_chain :freeze, :memoizable
end
end
end
def freeze_with_memoizable
memoize_all unless frozen?
freeze_without_memoizable
end
def memoize_all
prime_cache ".*"
end
def unmemoize_all
flush_cache ".*"
end
def prime_cache(*syms)
syms.each do |sym|
methods.each do |m|
if m.to_s =~ /^_unmemoized_(#{sym})/
if method(m).arity == 0
__send__($1)
else
ivar = ActiveSupport::Memoizable.memoized_ivar_for($1)
instance_variable_set(ivar, {})
end
end
end
end
end
def flush_cache(*syms, &block)
syms.each do |sym|
methods.each do |m|
if m.to_s =~ /^_unmemoized_(#{sym})/
ivar = ActiveSupport::Memoizable.memoized_ivar_for($1)
instance_variable_get(ivar).clear if instance_variable_defined?(ivar)
end
end
end
end
end
def memoize(*symbols)
symbols.each do |symbol|
original_method = :"_unmemoized_#{symbol}"
memoized_ivar = ActiveSupport::Memoizable.memoized_ivar_for(symbol)
class_eval <<-EOS, __FILE__, __LINE__ + 1
include InstanceMethods
raise "Already memoized #{symbol}" if method_defined?(:#{original_method}) # raise "Already memoized if_modified_since" if method_defined?(:__unmemoized_if_modified_since)
alias #{original_method} #{symbol} # alias __unmemoized_if_modified_since if_modified_since
if instance_method(:#{symbol}).arity == 0 # if instance_method(:if_modified_since).arity == 0
def #{symbol}(reload = false) # def if_modified_since(reload = false)
if reload || !defined?(#{memoized_ivar}) || #{memoized_ivar}.empty? # if reload || !defined?(@_memoized_if_modified_since) || @_memoized_if_modified_since.empty?
#{memoized_ivar} = [#{original_method}.freeze] # @_memoized_if_modified_since = [__unmemoized_if_modified_since.freeze]
end # end
#{memoized_ivar}[0] # @_memoized_if_modified_since[0]
end # end
else # else
def #{symbol}(*args) # def if_modified_since(*args)
#{memoized_ivar} ||= {} unless frozen? # @_memoized_if_modified_since ||= {} unless frozen?
reload = args.pop if args.last == true || args.last == :reload # reload = args.pop if args.last == true || args.last == :reload
#
if defined?(#{memoized_ivar}) && #{memoized_ivar} # if defined?(@_memoized_if_modified_since) && @_memoized_if_modified_since
if !reload && #{memoized_ivar}.has_key?(args) # if !reload && @_memoized_if_modified_since.has_key?(args)
#{memoized_ivar}[args] # @_memoized_if_modified_since[args]
elsif #{memoized_ivar} # elsif @_memoized_if_modified_since
#{memoized_ivar}[args] = #{original_method}(*args).freeze # @_memoized_if_modified_since[args] = __unmemoized_if_modified_since(*args).freeze
end # end
else # else
#{original_method}(*args) # __unmemoized_if_modified_since(*args)
end # end
end # end
end # end
EOS
end
end
end
end
|
