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Diffstat (limited to 'gnu/usr.bin/cc/libobjc/objc.h')
| -rw-r--r-- | gnu/usr.bin/cc/libobjc/objc.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/gnu/usr.bin/cc/libobjc/objc.h b/gnu/usr.bin/cc/libobjc/objc.h new file mode 100644 index 000000000000..4bb9da361dec --- /dev/null +++ b/gnu/usr.bin/cc/libobjc/objc.h @@ -0,0 +1,185 @@ +/* Basic data types for Objective C. + Copyright (C) 1993 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +#ifndef __objc_INCLUDE_GNU +#define __objc_INCLUDE_GNU + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef IN_GCC +#include "gstddef.h" +#else +#include "stddef.h" +#endif + +/* +** Definition of the boolean type. +*/ +typedef char BOOL; +#define YES (BOOL)1 +#define NO (BOOL)0 + +/* +** Definition of a selector. Selectors are really of type unsigned int. +** The runtime does this mapping from SEL's to names internally in the +** sel_... operations. You should never use the fact that it is actually +** an integer, since other Objective-C implementations use other conventions. +*/ +typedef void* SEL; + +/* +** ObjC uses this typedef for untyped instances. +*/ +typedef struct objc_object { + struct objc_class* class_pointer; +} *id; + +/* +** Definition of method type. When retrieving the implementation of a +** method, this is type of the pointer returned +*/ +typedef id (*IMP)(id, SEL, ...); + +/* +** More simple types... +*/ +#define nil (id)0 /* id of Nil instance */ +#define Nil (Class*)0 /* id of Nil class */ +typedef char *STR; /* String alias */ + +/* +** The compiler generates one of these structures for each class. +** +** This structure is the definition for classes. +** +** This structure is generated by the compiler in the executable and used by +** the run-time during normal 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; +typedef struct objc_class Class; +struct objc_class { + MetaClass* class_pointer; /* Pointer to the class's + meta class. */ + struct objc_class* super_class; /* Pointer to the super + class. NULL for class + Object. */ + const char* name; /* Name of the class. */ + long version; /* Unknown. */ + unsigned long info; /* Bit mask. See class masks + defined above. */ + long instance_size; /* Size in bytes of the class. + The sum of the class definition + and all super class + definitions. */ + struct objc_ivar_list* 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. */ + struct objc_method_list* methods; /* Linked list of instance + methods defined for the + class. */ + struct sarray * dtable; /* Pointer to instance + method dispatch table. */ + struct objc_class* subclass_list; /* Subclasses */ + struct objc_class* sibling_class; + + struct objc_protocol_list *protocols; /* Protocols conformed to */ +}; + +#ifndef __OBJC__ +typedef struct objc_protocol { + struct objc_class* class_pointer; + char *protocol_name; + struct objc_protocol_list *protocol_list; + struct objc_method_description_list *instance_methods, *class_methods; +} Protocol; + +#else + +@class Protocol; +#endif + +typedef void* retval_t; /* return value */ +typedef void(*apply_t)(void); /* function pointer */ + +#if defined(REG_ARGS) || defined(STACK_ARGS) + +typedef struct { + char* arg_pointer; +#ifdef STRUCT_RETURN + void* struct_return; +#endif +#ifdef REG_ARGS + void* regs[2]; +#endif +} *arglist_t; + +#ifdef REG_ARGS +#define __objc_frame_receiver(FRAME) (FRAME)->regs[0] +#define __objc_frame_selector(FRAME) ((SEL)(FRAME)->regs[1]) + +#else +#define __objc_frame_receiver(FRAME) ((id*)(FRAME)->arg_pointer)[0] +#define __objc_frame_selector(FRAME) ((SEL*)(FRAME)->arg_pointer)[1] +#endif +#else + +typedef void* arglist_t; + +#endif + +#if defined(__OBJC__) + +#include "objc/sarray.h" + +static id nil_method(id rcv, SEL op, ...) { return rcv; } + +extern __inline__ IMP +objc_msg_lookup(id receiver, SEL op) +{ + if(receiver) + return sarray_get(receiver->class_pointer->dtable, (size_t) op); + else + return nil_method; +} + +#else + +IMP objc_msg_lookup(id receiver, SEL op); + +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* not __objc_INCLUDE_GNU */ |