Module: Callbacks::ClassMethods

Defined in:
lib/backcall.rb

Instance Method Summary collapse

Instance Method Details

#after(m, *args, &block) ⇒ Object 



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# File 'lib/backcall.rb', line 53

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

#before(m, *args, &block) ⇒ Object 



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# File 'lib/backcall.rb', line 50

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

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



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# File 'lib/backcall.rb', line 15

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 << "      self.class.get_proc(\#{num}).bind(self).call\n    EOM\n  end\n\n  string = create_eval_for_mod_with_string_and_type!(m, type) do\n    arr.join(\"\\n\")\n  end        \n\n  mMode = Module.new {eval string}\n\n  define_callback_module(mMode)\nend\n"

#callbacks ⇒ Object 



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# File 'lib/backcall.rb', line 84

def callbacks
  @callbacks ||= []
end

#classes ⇒ Object 



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# File 'lib/backcall.rb', line 87

def classes
  @classes ||= []
end

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



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# File 'lib/backcall.rb', line 57

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

#define_callback_class(cla) ⇒ Object 



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# File 'lib/backcall.rb', line 12

def define_callback_class(cla)
  classes << cla
end

#define_callback_module(mod) ⇒ Object 



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# File 'lib/backcall.rb', line 9

def define_callback_module(mod)
  callbacks << mod
end