1 files changed, 12 insertions, 5 deletions

diff --git a/method.h b/method.h
index 0185c059b5..e6d4fab8b3 100644
--- a/method.h
+++ b/method.h
@@ -49,12 +49,9 @@ typedef struct rb_method_cfunc_struct {
 
 typedef struct rb_iseq_struct rb_iseq_t;
 
-typedef struct rb_method_entry_struct {
-    rb_method_flag_t flag;
+typedef struct rb_method_definition_struct {
     rb_method_type_t type; /* method type */
-    ID called_id;
     ID original_id;
-    VALUE klass;                    /* should be mark */
     union {
 	rb_iseq_t *iseq;            /* should be mark */
 	rb_method_cfunc_t cfunc;
@@ -66,13 +63,23 @@ typedef struct rb_method_entry_struct {
 	} optimize_type;
     } body;
     int alias_count;
+} rb_method_definition_t;
+
+typedef struct rb_method_entry_struct {
+    rb_method_flag_t flag;
+    rb_method_definition_t *def;
+    ID called_id;
+    VALUE klass;                    /* should be mark */
 } rb_method_entry_t;
 
+#define UNDEFINED_METHOD_ENTRY_P(me) (!(me) || !(me)->def || (me)->def->type == VM_METHOD_TYPE_UNDEF)
+
 void rb_add_method_cfunc(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc, rb_method_flag_t noex);
 rb_method_entry_t *rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *option, rb_method_flag_t noex);
-void rb_add_method_me(VALUE klass, ID mid, const rb_method_entry_t *, rb_method_flag_t noex);
+rb_method_entry_t *rb_add_method_me(VALUE klass, ID mid, const rb_method_entry_t *, rb_method_flag_t noex);
 rb_method_entry_t *rb_method_entry(VALUE klass, ID id);
 int rb_method_entry_arity(const rb_method_entry_t *me);
 void rb_gc_mark_method_entry(const rb_method_entry_t *me);
+void rb_free_method_entry(rb_method_entry_t *me);
 
 #endif /* METHOD_H */