[8833] | 1 | /* GNU Objective-C Typed Streams interface. |
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| 2 | Copyright (C) 1993, 1995 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 it |
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| 7 | under the terms of the GNU General Public License as published by the |
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| 8 | Free Software Foundation; either version 2, or (at your option) any |
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| 9 | later version. |
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| 10 | |
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| 11 | GNU CC is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
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| 14 | 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 compiled |
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| 22 | with GCC to produce an executable, this does not cause the resulting |
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| 23 | executable to be covered by the GNU General Public License. This |
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| 24 | exception does not however invalidate any other reasons why the |
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| 25 | executable file might be covered by the GNU General Public License. */ |
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| 26 | |
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| 27 | #ifndef __typedstream_INCLUDE_GNU |
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| 28 | #define __typedstream_INCLUDE_GNU |
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| 29 | |
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| 30 | #include "objc/objc.h" |
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| 31 | #include "objc/hash.h" |
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| 32 | #include <stdio.h> |
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| 33 | |
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| 34 | typedef int (*objc_typed_read_func)(void*, char*, int); |
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| 35 | typedef int (*objc_typed_write_func)(void*, const char*, int); |
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| 36 | typedef int (*objc_typed_flush_func)(void*); |
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| 37 | typedef int (*objc_typed_eof_func)(void*); |
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| 38 | |
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| 39 | #define OBJC_READONLY 0x01 |
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| 40 | #define OBJC_WRITEONLY 0x02 |
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| 41 | |
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| 42 | #define OBJC_MANAGED_STREAM 0x01 |
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| 43 | #define OBJC_FILE_STREAM 0x02 |
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| 44 | #define OBJC_MEMORY_STREAM 0x04 |
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| 45 | |
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| 46 | #define OBJC_TYPED_STREAM_VERSION 0x01 |
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| 47 | |
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| 48 | typedef struct objc_typed_stream { |
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| 49 | void* physical; |
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| 50 | cache_ptr object_table; /* read/written objects */ |
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| 51 | cache_ptr stream_table; /* other read/written but shared things.. */ |
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| 52 | cache_ptr class_table; /* class version mapping */ |
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| 53 | cache_ptr object_refs; /* forward references */ |
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| 54 | int mode; /* OBJC_READONLY or OBJC_WRITEONLY */ |
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| 55 | int type; /* MANAGED, FILE, MEMORY etc bit string */ |
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| 56 | int version; /* version used when writing */ |
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| 57 | int writing_root_p; |
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| 58 | objc_typed_read_func read; |
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| 59 | objc_typed_write_func write; |
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| 60 | objc_typed_eof_func eof; |
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| 61 | objc_typed_flush_func flush; |
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| 62 | } TypedStream; |
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| 63 | |
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| 64 | /* opcode masks */ |
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| 65 | #define _B_VALUE 0x1fU |
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| 66 | #define _B_CODE 0xe0U |
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| 67 | #define _B_SIGN 0x10U |
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| 68 | #define _B_NUMBER 0x0fU |
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| 69 | |
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| 70 | /* standard opcodes */ |
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| 71 | #define _B_INVALID 0x00U |
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| 72 | #define _B_SINT 0x20U |
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| 73 | #define _B_NINT 0x40U |
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| 74 | #define _B_SSTR 0x60U |
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| 75 | #define _B_NSTR 0x80U |
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| 76 | #define _B_RCOMM 0xa0U |
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| 77 | #define _B_UCOMM 0xc0U |
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| 78 | #define _B_EXT 0xe0U |
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| 79 | |
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| 80 | /* eXtension opcodes */ |
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| 81 | #define _BX_OBJECT 0x00U |
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| 82 | #define _BX_CLASS 0x01U |
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| 83 | #define _BX_SEL 0x02U |
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| 84 | #define _BX_OBJREF 0x03U |
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| 85 | #define _BX_OBJROOT 0x04U |
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| 86 | #define _BX_EXT 0x1fU |
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| 87 | |
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| 88 | /* |
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| 89 | ** Read and write objects as specified by TYPE. All the `last' |
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| 90 | ** arguments are pointers to the objects to read/write. |
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| 91 | */ |
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| 92 | |
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| 93 | int objc_write_type (TypedStream* stream, const char* type, const void* data); |
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| 94 | int objc_read_type (TypedStream* stream, const char* type, void* data); |
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| 95 | |
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| 96 | int objc_write_types (TypedStream* stream, const char* type, ...); |
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| 97 | int objc_read_types (TypedStream* stream, const char* type, ...); |
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| 98 | |
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| 99 | int objc_write_object_reference (TypedStream* stream, id object); |
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| 100 | int objc_write_root_object (TypedStream* stream, id object); |
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| 101 | |
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| 102 | long objc_get_stream_class_version (TypedStream* stream, Class class); |
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| 103 | |
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| 104 | |
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| 105 | /* |
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| 106 | ** Convenience functions |
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| 107 | */ |
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| 108 | |
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| 109 | int objc_write_array (TypedStream* stream, const char* type, |
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| 110 | int count, const void* data); |
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| 111 | int objc_read_array (TypedStream* stream, const char* type, |
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| 112 | int count, void* data); |
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| 113 | |
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| 114 | int objc_write_object (TypedStream* stream, id object); |
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| 115 | int objc_read_object (TypedStream* stream, id* object); |
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| 116 | |
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| 117 | |
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| 118 | |
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| 119 | /* |
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| 120 | ** Open a typed stream for reading or writing. MODE may be either of |
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| 121 | ** OBJC_READONLY or OBJC_WRITEONLY. |
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| 122 | */ |
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| 123 | |
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| 124 | TypedStream* objc_open_typed_stream (FILE* physical, int mode); |
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| 125 | TypedStream* objc_open_typed_stream_for_file (const char* file_name, int mode); |
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| 126 | |
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| 127 | void objc_close_typed_stream (TypedStream* stream); |
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| 128 | |
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| 129 | BOOL objc_end_of_typed_stream (TypedStream* stream); |
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| 130 | void objc_flush_typed_stream (TypedStream* stream); |
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| 131 | |
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| 132 | #endif /* not __typedstream_INCLUDE_GNU */ |
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