Module: PoolParty::Callbacks::ClassMethods

Defined in:
lib/modules/callback.rb

Instance Method Summary collapse

Instance Method Details

#after(m, *args, &block) ⇒ Object 



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# File 'lib/modules/callback.rb', line 51

def after(m, *args, &block)
  callback(:after, m, *args, &block)
end

#before(m, *args, &block) ⇒ Object 



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# File 'lib/modules/callback.rb', line 48

def before(m, *args, &block)
  callback(:before, m, *args, &block)
end

#callback(type, m, *args, &block) ⇒ Object 



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# File 'lib/modules/callback.rb', line 13

def callback(type, m, *args, &block)
  arr = []                
  args.each do |arg|
    arr << case arg.class.to_s
    when "Hash"
      arg.collect do |meth, klass|
        case klass.class.to_s
        when "String"
          define_callback_class(klass)
          "self.#{klass.to_s.downcase}.#{meth}(self)"
        else
          "#{klass}.send :#{meth}, self"
        end              
      end
    when "Symbol"
      "self.send :#{arg}, self"
    end
  end

  string = ""
  if block_given?
    num = store_proc(block.to_proc)
    arr << <<-EOM
      self.class.get_proc(#{num}).bind(self).call
    EOM
  end

  string = create_eval_for_mod_with_string_and_type!(m, type) do
    arr.join("\n")
  end        

  mMode = Module.new {eval string}

  define_callback_module(mMode)
end

#callbacks ⇒ Object 



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# File 'lib/modules/callback.rb', line 82

def callbacks
  @callbacks ||= []
end

#classes ⇒ Object 



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# File 'lib/modules/callback.rb', line 85

def classes
  @classes ||= []
end

#create_eval_for_mod_with_string_and_type!(meth, type = nil, &block) ⇒ Object 



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# File 'lib/modules/callback.rb', line 55

def create_eval_for_mod_with_string_and_type!(meth, type=nil, &block)
  str = ""
  case type
  when :before          
    str << <<-EOD
      def #{meth}(*args)
        #{yield}
        super
      end
    EOD
  when :after
    str << <<-EOD
      def #{meth}(*args)
        super
        #{yield}
      end
    EOD
  else
    str << <<-EOD
      def #{meth}(*args)
        #{yield}
      end
    EOD
  end
  str
end

#define_callback_class(cla) ⇒ Object 



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# File 'lib/modules/callback.rb', line 10

def define_callback_class(cla)
  classes << cla
end

#define_callback_module(mod) ⇒ Object 



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# File 'lib/modules/callback.rb', line 7

def define_callback_module(mod)
  callbacks << mod
end