| 1 | /* Basic data types for Objective C.
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| 2 | Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GNU CC.
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| 5 |
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| 6 | GNU CC is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GNU CC is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GNU CC; see the file COPYING. If not, write to
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| 18 | the Free Software Foundation, 59 Temple Place - Suite 330,
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| 19 | Boston, MA 02111-1307, USA. */
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| 20 |
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| 21 | /* As a special exception, if you link this library with files
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| 22 | compiled with GCC to produce an executable, this does not cause
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| 23 | the resulting executable to be covered by the GNU General Public License.
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| 24 | This exception does not however invalidate any other reasons why
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| 25 | the executable file might be covered by the GNU General Public License. */
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| 26 |
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| 27 | #ifndef __objc_INCLUDE_GNU
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| 28 | #define __objc_INCLUDE_GNU
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| 29 |
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| 30 | #ifdef __cplusplus
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| 31 | extern "C" {
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| 32 | #endif
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| 33 |
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| 34 | #include <stddef.h>
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| 35 |
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| 36 | /*
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| 37 | ** Definition of the boolean type.
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| 38 | */
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| 39 | #ifdef __vxworks
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| 40 | typedef int BOOL;
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| 41 | #else
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| 42 | typedef unsigned char BOOL;
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| 43 | #endif
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| 44 | #define YES (BOOL)1
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| 45 | #define NO (BOOL)0
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| 46 |
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| 47 | /*
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| 48 | ** Definition of a selector. Selectors themselves are not unique, but
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| 49 | ** the sel_id is a unique identifier.
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| 50 | */
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| 51 | typedef const struct objc_selector
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| 52 | {
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| 53 | void *sel_id;
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| 54 | const char *sel_types;
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| 55 | } *SEL;
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| 56 |
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| 57 | inline static BOOL
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| 58 | sel_eq (SEL s1, SEL s2)
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| 59 | {
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| 60 | if (s1 == 0 || s2 == 0)
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| 61 | return s1 == s2;
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| 62 | else
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| 63 | return s1->sel_id == s2->sel_id;
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| 64 | }
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| 65 |
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| 66 |
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| 67 | /*
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| 68 | ** ObjC uses this typedef for untyped instances.
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| 69 | */
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| 70 | typedef struct objc_object {
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| 71 | struct objc_class* class_pointer;
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| 72 | } *id;
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| 73 |
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| 74 | /*
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| 75 | ** Definition of method type. When retrieving the implementation of a
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| 76 | ** method, this is type of the pointer returned
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| 77 | */
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| 78 | typedef id (*IMP)(id, SEL, ...);
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| 79 |
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| 80 | /*
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| 81 | ** More simple types...
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| 82 | */
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| 83 | #define nil (id)0 /* id of Nil instance */
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| 84 | #define Nil (Class)0 /* id of Nil class */
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| 85 | typedef char *STR; /* String alias */
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| 86 |
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