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| author | Dennis Glatting <dennisg@gnu.org> | 1991-11-16 15:57:35 +0000 |
|---|---|---|
| committer | Dennis Glatting <dennisg@gnu.org> | 1991-11-16 15:57:35 +0000 |
| commit | 5b548897881659b5b232de098debd28cce749b1b (patch) | |
| tree | 5ccce460987d28a07aa2909d17d7dd526207dc1a /gcc | |
| parent | defc614f046a261be356c9fad32ec1cf3c8ce58e (diff) | |
| download | gcc-5b548897881659b5b232de098debd28cce749b1b.zip gcc-5b548897881659b5b232de098debd28cce749b1b.tar.gz gcc-5b548897881659b5b232de098debd28cce749b1b.tar.bz2 | |
changed the defs for class structures for new implementation of run-time.
changed def of SEL back to its original type.
From-SVN: r61
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/objc/objc.h | 87 |
1 files changed, 47 insertions, 40 deletions
diff --git a/gcc/objc/objc.h b/gcc/objc/objc.h index 3303e1f..553f202 100644 --- a/gcc/objc/objc.h +++ b/gcc/objc/objc.h @@ -19,10 +19,13 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - $Header: /usr/user/dennis_glatting/ObjC/c-runtime/include/RCS/ObjC.h,v 0.1 1991/10/24 00:19:24 dennisg Exp dennisg $ + $Header: /usr/user/dennis_glatting/ObjC/c-runtime/include/RCS/ObjC.h,v 0.2 1991/11/07 22:31:42 dennisg Exp dennisg $ $Author: dennisg $ - $Date: 1991/10/24 00:19:24 $ + $Date: 1991/11/07 22:31:42 $ $Log: ObjC.h,v $ + * Revision 0.2 1991/11/07 22:31:42 dennisg + * added copyleft. + * * Revision 0.1 1991/10/24 00:19:24 dennisg * Initial check in. Preliminary development stage. * @@ -53,12 +56,18 @@ typedef char BOOL; #define YES (BOOL)1 #define NO (BOOL)0 - /* Defination of a + /* Definition of a selector. Selectors are really of type char*. The - run-time uses strcmp() to - locate selectors. */ -typedef STR SEL; + run-time hashes the + string's address to locate + the method. If the method + isn't in the hash table then + a search is made through the + class hierarchy using + strcmp() to locate the + method. */ +typedef struct objc_selector* SEL; /* ObjC uses this typedef for untyped instances. */ @@ -68,11 +77,7 @@ typedef struct objc_object { /* Prototype for method functions. */ -typedef id ( *IMP )( -#ifdef __STDC__ - id, SEL, ... -#endif -); +typedef id ( *IMP )( id, SEL, ... ); /* Filer types used to describe Ivars and @@ -163,10 +168,8 @@ typedef struct objc_symtab { * module structure of the executable. */ typedef struct objc_module { - u_long version; /* Unknown. */ - u_long size; /* Suspect this is - sizeof(Module). It is always - 16. */ + u_long version; /* Compiler revision. */ + u_long size; /* sizeof(Module). */ char* name; /* Name of the file where the module was generated. The name includes the path. */ @@ -250,25 +253,27 @@ typedef struct objc_method_list { * * This structure is generated by the compiler in the * executable and used by the run-time during normal - * messaging operations. Therefore some definitions - * don't make sense in some contexts. + * messaging operations. Therefore some members + * change type. + * The compiler generates "char* const" and places a string + * in the following member variables: isa and super_class. */ typedef struct objc_metaClass { - char* isa; /* Always a pointer to the - string "Object". */ - char* super_class; /* Name of the class's super - class. */ - char* name; /* Name of the meta class. */ - long version; /* Unknown. */ - long info; /* Bit mask. See class masks + struct objc_metaClass* isa; /* Pointer to Object meta + class. */ + struct objc_metaClass* super_class; /* Pointer to meta class's + super meta class. */ + char* name; /* Name of the meta class. */ + long version; /* Unknown. */ + long info; /* Bit mask. See class masks defined above. */ - long instance_size; /* Always 0 except for Object. + long instance_size; /* Always 0 except for Object. Should be ignored. */ - IvarList_t ivars; /* Always NULL except for + IvarList_t ivars; /* Always NULL except for Object. Should be ignored. */ - MethodList_t methods; /* Linked List of factory methods + MethodList_t methods; /* Linked List of factory methods for the class. */ - Cache_t cache; /* Used to cache factory methods + Cache_t cache; /* Used to cache factory methods defined for the class and its super classes. Entries are made to the cache as the @@ -284,33 +289,35 @@ typedef struct objc_metaClass { * * This structure is generated by the compiler in the * executable and used by the run-time during normal - * messaging operations. Therefore some definitions - * don't make sense in some contexts. + * messaging operations. Therefore some members + * change type. + * The compiler generates "char* const" and places a string + * in the following member variables: super_class. */ typedef struct objc_class { - MetaClass_t isa; /* Pointer to the class's + MetaClass_t isa; /* Pointer to the class's meta class. */ - char* super_class; /* Name of the class's super - class. */ - char* name; /* Name of the class. */ - long version; /* Unknown. */ - long info; /* Bit mask. See class masks + struct objc_class* super_class; /* Pointer to the super + class. */ + char* name; /* Name of the class. */ + long version; /* Unknown. */ + long info; /* Bit mask. See class masks defined above. */ - long instance_size; /* Size in bytes of the class. + long instance_size; /* Size in bytes of the class. The sum of the class definition and all super class definitions. */ - IvarList_t ivars; /* Pointer to a structure that + IvarList_t ivars; /* Pointer to a structure that describes the instance variables in the class definition. NULL indicates no instance variables. Does not include super class variables. */ - MethodList_t methods; /* Linked list of instance + MethodList_t methods; /* Linked list of instance methods defined for the class. */ - Cache_t cache; /* Used to cache instance methods + Cache_t cache; /* Used to cache instance methods defined for the class and its super classes. Entries are made to the cache as the |