Proposal: Module#method_adding

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Module#method_adding
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On Tue, 10 Feb 2009 21:50:53 +0900
SASADA Koichi [email protected] wrote:

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http://d.hatena.ne.jp/rubikitch/20080504/1209835550

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old_e$B$H$$$&L>A0$rIU$1$k!”$H$$$&9T0Y$rJ#?t$N?M4V$,;W$$$D$/$N$O!”$h$/$"$j$=$&$J$3$H$G$9!#e(B

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Tadashi S. wrote::

e$B$=$N$h$&$J;~$O!"L58B%k!<%W$K$J$C$F$7$^$$$^$9!#e(B

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e$B$=$l$3$=!$e(Bold_foo e$B$r:FEY:n$m$&$H$7$?$H$-$H$+!%e(B

e$B$"!$e(Balias e$B$G$b$A$c$s$He(B method_added

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On Wed, 11 Feb 2009 03:32:41 +0900
SASADA Koichi [email protected] wrote:

e$B!!e(Bold_foo e$B$r0B0W$K:n$k$3$H$O$^$:$$$+$b$7$l$^$;$s$,!$Ds0F<+BN$OK<AE*$K$Oe(B
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http://www.rubyist.net/~nobu/t/20051118.html

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: SASADA Koichi [email protected]
Subject: [ruby-dev:37982] Re: proposal: Module#method_adding
Date: Fri, 13 Feb 2009 05:52:57 +0900
Message-ID: [email protected]

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method_added e$B$re(B method_added(symbol, pre_method_obj,
new_method_obj)
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e$B$=$&$9$l$P!$e(Bdefine_method
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pre_method_obj e$B$He(B new_method_obj
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SASADA Koichi wrote::

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Module#method_adding e$B$H$$$&$N$r?7@_$9$k$N$O$I$&$@$m$&!$$H$$$&0F$,$G$^$7e(B
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Index: object.c

— object.c (e$B%j%S%8%g%se(B 22272)
+++ object.c (e$B:n6H%3%T!<e(B)
@@ -523,6 +523,91 @@ rb_obj_tap(VALUE obj)
*/

/*

    • Document-method: method_adding
    • call-seq:
    • method_adding(symbol)
      
    • Invoked as a callback whenever a method (except singleton method)
    • is adding to the class.
    • This method is called before method adding process.
    • module Chatty
      
    •   def Chatty.method_adding(id)
      
    •     puts "adding: #{id}, respond_to?: #{method_defined? id}"
      
    •   end
      
    •   def Chatty.method_added(id)
      
    •     puts "added: #{id}, respond_to?: #{method_defined? id}"
      
    •   end
      
    •   def self.one()     end
      
    •   def two()          end
      
    •   def Chatty.three() end
      
    • end
      
    • produces:
    • adding: two, respond_to?: false
      
    • added: two, respond_to?: true
      
  • */

+/*

    • Document-method: method_added
    • call-seq:
    • method_added(symbol)
      
    • Invoked as a callback whenever a method (except singleton method)
    • is added to the class.
    • module Chatty
      
    •   def Chatty.singleton_method_added(id)
      
    •     puts "Adding #{id}"
      
    •   end
      
    •   def self.one()     end
      
    •   def two()          end
      
    •   def Chatty.three() end
      
    • end
      
    • produces:
    • Adding 2
      
  • */

+/*

    • Document-method: singleton_method_adding
    • call-seq:
    • singleton_method_adding(symbol)
      
    • Invoked as a callback whenever a singleton method is adding to the
    • receiver. This method is called before method added process.
    • module Chatty
      
    •   def Chatty.singleton_method_adding(id)
      
    •     puts "adding: #{id}, respond_to?: #{self.respond_to? id}"
      
    •   end
      
    •   def Chatty.singleton_method_added(id)
      
    •     puts "added: #{id}, respond_to?: #{self.respond_to? id}"
      
    •   end
      
    •   def self.one()     end
      
    •   def two()          end
      
    •   def Chatty.three() end
      
    • end
      
    • produces:
    • adding: singleton_method_added, respond_to?: false
      
    • added: singleton_method_added, respond_to?: true
      
    • adding: one, respond_to?: false
      
    • added: one, respond_to?: true
      
    • adding: three, respond_to?: false
      
    • added: three, respond_to?: true
      
  • */

+/*

  • Document-method: singleton_method_added
  • call-seq:
    @@ -533,7 +618,7 @@ rb_obj_tap(VALUE obj)
  • module Chatty
    
  •   def Chatty.singleton_method_added(id)
    
    •     puts "Adding #{id.id2name}"
      
    •     puts "Adding #{id}"
      
    •   end
      
    •   def self.one()     end
      
    •   def two()          end
      

@@ -2488,6 +2573,7 @@ Init_Object(void)
rb_define_method(rb_cBasicObject, “!=”, rb_obj_not_equal, 1);

 rb_define_private_method(rb_cBasicObject, "singleton_method_added",

rb_obj_dummy, 1);

  • rb_define_private_method(rb_cBasicObject,
    “singleton_method_adding”, rb_obj_dummy, 1);
    rb_define_private_method(rb_cBasicObject,
    “singleton_method_removed”, rb_obj_dummy, 1);
    rb_define_private_method(rb_cBasicObject,
    “singleton_method_undefined”, rb_obj_dummy, 1);

@@ -2497,6 +2583,7 @@ Init_Object(void)
rb_define_private_method(rb_cModule, “included”, rb_obj_dummy, 1);
rb_define_private_method(rb_cModule, “extended”, rb_obj_dummy, 1);
rb_define_private_method(rb_cModule, “method_added”, rb_obj_dummy,
1);

  • rb_define_private_method(rb_cModule, “method_adding”, rb_obj_dummy,
    1);
    rb_define_private_method(rb_cModule, “method_removed”,
    rb_obj_dummy, 1);
    rb_define_private_method(rb_cModule, “method_undefined”,
    rb_obj_dummy, 1);

Index: vm_method.c

— vm_method.c (e$B%j%S%8%g%se(B 22272)
+++ vm_method.c (e$B:n6H%3%T!<e(B)
@@ -10,7 +10,7 @@ static void rb_vm_check_redefinition_opt

static ID object_id;
static ID removed, singleton_removed, undefined, singleton_undefined;
-static ID added, singleton_added;
+static ID added, singleton_added, adding, singleton_adding;

struct cache_entry { /* method hash table. /
ID mid; /
method’s id */
@@ -125,6 +125,17 @@ rb_add_method(VALUE klass, ID mid, NODE
if (OBJ_FROZEN(klass)) {
rb_error_frozen(“class/module”);
}
+

  • if (node && mid != ID_ALLOCATOR && ruby_running) {

  • if (FL_TEST(klass, FL_SINGLETON)) {

  •  rb_funcall(rb_iv_get(klass, "__attached__"), singleton_adding, 1,
    
  •       ID2SYM(mid));
    
  • }

  • else {

  •  rb_funcall(klass, adding, 1, ID2SYM(mid));
    
  • }

  • }

  • rb_clear_cache_by_id(mid);

    /*
    @@ -749,6 +760,13 @@ rb_alias(VALUE klass, ID name, ID def)
    singleton = rb_iv_get(klass, “attached”);
    }

  • if (singleton) {

  • rb_funcall(singleton, singleton_adding, 1, ID2SYM(name));

  • }

  • else {

  • rb_funcall(klass, adding, 1, ID2SYM(name));

  • }

  • orig_fbody->nd_cnt++;

    if (st_lookup(RCLASS_M_TBL(klass), name, &data)) {
    @@ -1132,7 +1150,9 @@ Init_eval_method(void)

    object_id = rb_intern(“object_id”);
    added = rb_intern(“method_added”);

  • adding = rb_intern(“method_adding”);
    singleton_added = rb_intern(“singleton_method_added”);

  • singleton_adding = rb_intern(“singleton_method_adding”);
    removed = rb_intern(“method_removed”);
    singleton_removed = rb_intern(“singleton_method_removed”);
    undefined = rb_intern(“method_undefined”);

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: Urabe S. [email protected]
Subject: [ruby-dev:37989] Re: proposal: Module#method_adding
Date: Fri, 13 Feb 2009 12:19:50 +0900
Message-ID: [email protected]

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