Problem with Module#append_features

ruby-talk
21

----------------------------------------> 8---- before.rb

try this

module Mod
  before :fnname
  def fnname_Mod
    puts "fnname_Mod called"
  end
end

class Klass
  include Mod
  def fnname
    puts "fnname called"
  end
end

k=Klass.new
k.fnname

   class A < Klass
      def fnname
         puts "A#fnname called"
         super
      end
   end

   A.new.fnname

Guy Decoux

22

class A < Klass
def fnname
puts “A#fnname called”
super
end
end

A.new.fnname

Ok, another version from the heart method
‘beforehack_insertBeforeWrapper’:

def beforehack_insertBeforeWrapper(klass,method_name)
debug "beforehack_insertBeforeWrapper: hacking
#{klass}.#{method_name} to exec #{method_name}#{self}", :before
klass.module_eval <<-END_OF_ADVICE
@before_in_beforehack_semaphore=true
alias pre_include#{self}#{klass}#{method_name} #{method_name}
def #{method_name}(*args,&block)
debug “redefined #{klass}.#{method_name} - calling
‘#{method_name}#{self}', then
'pre_include#{self}#{klass}#{method_name}’”, :before
#{method_name}#{self}(*args,&block)
pre_include#{self}#{klass}#{method_name}(*args,&block)
end
@before_in_beforehack_semaphore=false
END_OF_ADVICE
end

It now calls the wrapper method twice in the case above, but it can
be easily detected in the wrapper method, and it is enough for me.

Anyway, you have a modified ruby, so just keep silent… :)))
Really, thanks for pointing out this bug! :slight_smile:

Circum

PS: since I use ruby, where everything is soooo simple and
straightforward and elagant, I have scratched too many hair from
my head… :))

23

  def beforehack_insertBeforeWrapper(klass,method_name)

more complex, now :slight_smile:

   module Mod
      undef :fnname_Mod
   end

   A.new.fnname

I just want to remove the before advice and still want that #fnname work

Guy Decoux

24

ts wrote:

def beforehack_insertBeforeWrapper(klass,method_name)

more complex, now :slight_smile:

module Mod
undef :fnname_Mod
end

A.new.fnname

I just want to remove the before advice and still want that #fnname work

Guy Decoux

module Mod
def fnname_Mod
end
end

:)))

Ferenc