Mercurial > hg > xemacs-beta
annotate src/opaque.h @ 5923:61d7d7bcbe76 cygwin
merged heads after pull -u
| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Thu, 05 Feb 2015 17:19:05 +0000 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* Opaque Lisp objects. |
| 2 Copyright (C) 1993 Sun Microsystems, Inc. | |
| 3 Copyright (C) 1995, 1996 Ben Wing. | |
| 4 | |
| 5 This file is part of XEmacs. | |
| 6 | |
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
| 428 | 11 |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* Synched up with: Not in FSF. */ | |
| 21 | |
| 22 /* Written by Ben Wing, October 1993. */ | |
| 23 | |
| 440 | 24 #ifndef INCLUDED_opaque_h_ |
| 25 #define INCLUDED_opaque_h_ | |
| 428 | 26 |
| 27 typedef struct Lisp_Opaque | |
| 28 { | |
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29 NORMAL_LISP_OBJECT_HEADER header; |
| 665 | 30 Bytecount size; |
| 428 | 31 max_align_t data[1]; |
| 32 } Lisp_Opaque; | |
| 33 | |
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34 DECLARE_LISP_OBJECT (opaque, Lisp_Opaque); |
| 428 | 35 #define XOPAQUE(x) XRECORD (x, opaque, Lisp_Opaque) |
| 617 | 36 #define wrap_opaque(p) wrap_record (p, opaque) |
| 428 | 37 #define OPAQUEP(x) RECORDP (x, opaque) |
| 38 /* #define CHECK_OPAQUE(x) CHECK_RECORD (x, opaque) | |
| 39 Opaque pointers should never escape to the Lisp level, so | |
| 40 functions should not be doing this. */ | |
| 41 | |
| 440 | 42 /* Alternative DATA arguments to make_opaque() */ |
| 442 | 43 #define OPAQUE_CLEAR ((const void *) 0) |
| 44 #define OPAQUE_UNINIT ((const void *) -1) | |
| 428 | 45 |
| 46 #define OPAQUE_SIZE(op) ((op)->size) | |
| 47 #define OPAQUE_DATA(op) ((void *) ((op)->data)) | |
| 48 #define XOPAQUE_SIZE(op) OPAQUE_SIZE (XOPAQUE (op)) | |
| 49 #define XOPAQUE_DATA(op) OPAQUE_DATA (XOPAQUE (op)) | |
| 50 | |
| 665 | 51 Lisp_Object make_opaque (const void *data, Bytecount size); |
| 428 | 52 |
| 53 typedef struct Lisp_Opaque_Ptr | |
| 54 { | |
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55 NORMAL_LISP_OBJECT_HEADER header; |
| 428 | 56 void *ptr; |
| 57 } Lisp_Opaque_Ptr; | |
| 58 | |
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59 DECLARE_LISP_OBJECT (opaque_ptr, Lisp_Opaque_Ptr); |
| 428 | 60 #define XOPAQUE_PTR(x) XRECORD (x, opaque_ptr, Lisp_Opaque_Ptr) |
| 617 | 61 #define wrap_opaque_ptr(p) wrap_record (p, opaque_ptr) |
| 428 | 62 #define OPAQUE_PTRP(x) RECORDP (x, opaque_ptr) |
| 63 | |
| 1650 | 64 EXTERN_C MODULE_API Lisp_Object make_opaque_ptr (void *val); |
| 65 EXTERN_C MODULE_API void free_opaque_ptr (Lisp_Object ptr); | |
| 428 | 66 |
| 67 #define get_opaque_ptr(op) (XOPAQUE_PTR (op)->ptr) | |
| 68 #define set_opaque_ptr(op, ptr_) (XOPAQUE_PTR (op)->ptr = (ptr_)) | |
| 69 | |
| 440 | 70 #endif /* INCLUDED_opaque_h_ */ |