vVuWdx02

1module REST
2  def self.OAuth(client)
3    REST::OAuth.new(client)
4  end
5
6  class OAuth < Module
7    def initialize(client)
8      @client = client
9      freeze
10    end
11
12    private
13
14    def included(descendant)
15      super
16      descendant.send(:include, Methods)
17    end
18
19    def define_methods
20      define_cmp_method
21      define_hash_method
22      define_inspect_method if inspect
23    end
24
25    # Define an #cmp? method based on the instance's values identified by #keys
26    #
27    # @return [undefined]
28    #
29    # @api private
30    def define_cmp_method
31      keys = @keys
32      define_method(:cmp?) do |comparator, other|
33        keys.all? do |key|
34          __send__(key).public_send(comparator, other.__send__(key))
35        end
36      end
37      private :cmp?
38    end
39
40    # Define a #hash method based on the instance's values identified by #keys
41    #
42    # @return [undefined]
43    #
44    # @api private
45    def define_hash_method
46      keys = @keys
47      define_method(:hash) do | |
48        keys.map(&method(:send)).push(self.class).hash
49      end
50    end
51
52    # Define an inspect method that reports the values of the instance's keys
53    #
54    # @return [undefined]
55    #
56    # @api private
57    def define_inspect_method
58      keys = @keys
59      define_method(:inspect) do | |
60        klass = self.class
61        name  = klass.name || klass.inspect
62        "#<#{name}#{keys.map { |key| " #{key}=#{__send__(key).inspect}" }.join}>"
63      end
64    end
65
66    # The comparison methods
67    module Methods
68      # Compare the object with other object for equality
69      #
70      # @example
71      #   object.eql?(other)  # => true or false
72      #
73      # @param [Object] other
74      #   the other object to compare with
75      #
76      # @return [Boolean]
77      #
78      # @api public
79      def eql?(other)
80        instance_of?(other.class) && cmp?(__method__, other)
81      end
82
83      # Compare the object with other object for equivalency
84      #
85      # @example
86      #   object == other  # => true or false
87      #
88      # @param [Object] other
89      #   the other object to compare with
90      #
91      # @return [Boolean]
92      #
93      # @api public
94      def ==(other)
95        other.is_a?(self.class) && cmp?(__method__, other)
96      end
97    end # module Methods
98  end # class Equalizer
99end