diff options
Diffstat (limited to 'libobjc/objc-private/module-abi-8.h')
| -rw-r--r-- | libobjc/objc-private/module-abi-8.h | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/libobjc/objc-private/module-abi-8.h b/libobjc/objc-private/module-abi-8.h index 414e5e354ec..7505a6b0bf3 100644 --- a/libobjc/objc-private/module-abi-8.h +++ b/libobjc/objc-private/module-abi-8.h @@ -115,13 +115,15 @@ struct objc_ivar_list problem is a singly linked list of methods. */ struct objc_method { - SEL method_name; /* This variable is the method's name. It - is a char*. The unique integer passed - to objc_msg_send is a char* too. It is - compared against method_name using - strcmp. */ + SEL method_name; /* This variable is the method's name. + The compiler puts a char* here, and + it's replaced by a real SEL at runtime + when the method is registered. */ const char* method_types; /* Description of the method's parameter - list. Useful for debuggers. */ + list. Used when registering the + selector with the runtime. When that + happens, method_name will contain the + method's parameter list. */ IMP method_imp; /* Address of the method in the executable. */ }; @@ -139,7 +141,12 @@ struct objc_method_list }; /* Currently defined in Protocol.m (that definition should go away - once we include this file). */ + once we include this file). Note that a 'struct + objc_method_description' as embedded inside a Protocol uses the + same trick as a 'struct objc_method': the method_name is a 'char *' + according to the compiler, who puts the method name as a string in + there. At runtime, the selectors need to be registered, and the + method_name then becomes a SEL. */ struct objc_method_description_list { int count; |
