Class: Array

Inherits:
Object show all
Defined in:
lib/rfm/utilities/core_ext.rb

Direct Known Subclasses

Rfm::CompoundQuery, Rfm::Resultset

Instance Method Summary collapse

Instance Method Details

#rfm_extend_member(member, extension, i = nil) ⇒ Object 



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# File 'lib/rfm/utilities/core_ext.rb', line 102

def rfm_extend_member(member, extension, i=nil)
  if member and extension
   unless member.instance_variable_get(:@root)
    member.instance_variable_set(:@root, @root)
    member.instance_variable_set(:@parent, self)
    member.instance_variable_set(:@index, i)
    member.instance_eval(){def root; @root; end}
    member.instance_eval(){def parent; @parent; end}
    member.instance_eval(){def get_index; @index; end}
  end
  member.extend(extension)
end  
end

#rfm_extend_members(klass, caller = nil) ⇒ Object

These methods allow dynamic extension of array members with other modules. These methods also carry the @root object for reference, when you don’t have the root object explicity referenced anywhere.

These methods might slow down array traversal, as they add interpreted code to methods that were otherwise pure C.



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# File 'lib/rfm/utilities/core_ext.rb', line 73

def rfm_extend_members(klass, caller=nil)
  @parent = caller
  @root = caller.instance_variable_get(:@root)
  @member_extension = klass
  self.instance_eval do
    class << self
     attr_accessor :parent
  
      alias_method 'old_reader', '[]'
      def [](*args)
        member = old_reader(*args)
        rfm_extend_member(member, @member_extension, args[0]) if args[0].is_a? Integer
        member
      end

      alias_method 'old_each', 'each'
      def each
        i = -1
        old_each do |member|
          i = i + 1
          rfm_extend_member(member, @member_extension, i)
          yield(member)
        end
      end
    end
  end unless defined? old_reader
  self
end

#rfm_extract_options! ⇒ Object

Taken from ActiveSupport extract_options!.



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# File 'lib/rfm/utilities/core_ext.rb', line 63

def rfm_extract_options!
  last.is_a?(::Hash) ? pop : {}
end