From: Hiroshi IGARASHI <igarashi@...>
Date: 2000-09-17T21:27:19+09:00
Subject: [ruby-dev:10936] Re: Meta-Level API

いがらしです。

At Sun, 17 Sep 2000 19:48:11 +0900,
in [ruby-dev:10935] Re: Meta-Level API,
Hiroshi IGARASHI <igarashi@ueda.info.waseda.ac.jp> wrote:
> 
> いがらしです。
> 
> At Sun, 17 Sep 2000 01:25:32 +0900,
> in [ruby-dev:10933] Meta-Level API,
> Hiroshi IGARASHI <igarashi@ueda.info.waseda.ac.jp> wrote:
> > 
> > Module#direct_included_modules
> >     直接includeしているModuleだけ返す版。
> 
> 無理矢理ですがこんな感じで計算できます。

Cレベルでもうちょっとましに書いてみました。
Module#constants_at も入ってます。

--
五十嵐  宏  (Hiroshi IGARASHI)

Index: intern.h
===================================================================
RCS file: /home/cvs/ruby/intern.h,v
retrieving revision 1.27
diff -u -r1.27 intern.h
--- intern.h	2000/09/15 06:00:24	1.27
+++ intern.h	2000/09/17 12:25:18
@@ -84,6 +84,7 @@
 VALUE rb_module_new _((void));
 VALUE rb_define_module_id _((ID));
 VALUE rb_mod_included_modules _((VALUE));
+VALUE rb_mod_included_modules_at _((VALUE));
 VALUE rb_mod_ancestors _((VALUE));
 VALUE rb_class_instance_methods _((int, VALUE*, VALUE));
 VALUE rb_class_protected_instance_methods _((int, VALUE*, VALUE));
@@ -355,6 +356,7 @@
 VALUE rb_mod_const_at _((VALUE, VALUE));
 VALUE rb_mod_constants _((VALUE));
 VALUE rb_mod_const_of _((VALUE, VALUE));
+VALUE rb_mod_constants_at _((VALUE));
 VALUE rb_mod_remove_const _((VALUE, VALUE));
 int rb_const_defined_at _((VALUE, ID));
 int rb_autoload_defined _((ID));
Index: object.c
===================================================================
RCS file: /home/cvs/ruby/object.c,v
retrieving revision 1.28
diff -u -r1.28 object.c
--- object.c	2000/09/15 06:00:26	1.28
+++ object.c	2000/09/17 12:25:19
@@ -1155,6 +1155,7 @@
     rb_define_method(rb_cModule, "clone", rb_mod_clone, 0);
     rb_define_method(rb_cModule, "to_s", rb_mod_to_s, 0);
     rb_define_method(rb_cModule, "included_modules", rb_mod_included_modules, 0);
+    rb_define_method(rb_cModule, "included_modules_at", rb_mod_included_modules_at, 0);
     rb_define_method(rb_cModule, "name", rb_mod_name, 0);
     rb_define_method(rb_cModule, "ancestors", rb_mod_ancestors, 0);
 
@@ -1171,6 +1172,7 @@
     rb_define_method(rb_cModule, "private_instance_methods", rb_class_private_instance_methods, -1);
 
     rb_define_method(rb_cModule, "constants", rb_mod_constants, 0);
+    rb_define_method(rb_cModule, "constants_at", rb_mod_constants_at, 0);
     rb_define_method(rb_cModule, "const_get", rb_mod_const_get, 1);
     rb_define_method(rb_cModule, "const_set", rb_mod_const_set, 2);
     rb_define_method(rb_cModule, "const_defined?", rb_mod_const_defined, 1);
Index: class.c
===================================================================
RCS file: /home/cvs/ruby/class.c,v
retrieving revision 1.12
diff -u -r1.12 class.c
--- class.c	2000/07/27 09:49:14	1.12
+++ class.c	2000/09/17 12:25:19
@@ -265,6 +265,42 @@
 }
 
 VALUE
+rb_mod_included_modules_at(mod)
+    VALUE mod;
+{
+    VALUE ams = rb_mod_ancestors(mod);
+    int i;
+
+    switch (RARRAY(ams)->len) {
+      case 1:
+	return rb_ary_new();
+      case 2:
+	return rb_ary_new3(1, RARRAY(ams)->ptr[1]);
+      default:
+	{
+	  VALUE ary = rb_obj_dup(ams);
+	  for (i = 1; i < RARRAY(ams)->len; i++) {
+	      VALUE m = RARRAY(ams)->ptr[i];
+	      if (BUILTIN_TYPE(m) == T_MODULE) {
+		  VALUE m2 = RCLASS(m)->super;
+		  if (m2) {
+		      rb_ary_delete(ary, RBASIC(m2)->klass); 
+		  }
+	      } else {
+		  ams = rb_mod_ancestors(m);
+		  for (i = 0; i < RARRAY(ams)->len; i++) {
+		      rb_ary_delete(ary, RARRAY(ams)->ptr[i]);
+		  }
+		  break;
+	      }
+	  }
+	  rb_ary_delete(ary, mod);
+	  return ary;
+      }
+    }
+}
+
+VALUE
 rb_mod_ancestors(mod)
     VALUE mod;
 {
Index: variable.c
===================================================================
RCS file: /home/cvs/ruby/variable.c,v
retrieving revision 1.24
diff -u -r1.24 variable.c
--- variable.c	2000/09/15 06:00:28	1.24
+++ variable.c	2000/09/17 12:25:20
@@ -1182,6 +1182,13 @@
     return rb_mod_const_of(mod, rb_ary_new());
 }
 
+VALUE
+rb_mod_constants_at(mod)
+    VALUE mod;
+{
+    return rb_mod_const_at(mod, rb_ary_new());
+}
+
 int
 rb_const_defined_at(klass, id)
     VALUE klass;