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1 | /* GNU Objective-C Typed Streams interface. |
2 | Copyright (C) 1993 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU CC. | |
5 | ||
6 | GNU CC is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | GNU CC is distributed in the hope that it will be useful, but WITHOUT | |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
14 | License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU CC; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* As a special exception, if you link this library with files compiled | |
21 | with GCC to produce an executable, this does not cause the resulting | |
22 | executable to be covered by the GNU General Public License. This | |
23 | exception does not however invalidate any other reasons why the | |
24 | executable file might be covered by the GNU General Public License. */ | |
25 | ||
26 | #ifndef __typedstream_INCLUDE_GNU | |
27 | #define __typedstream_INCLUDE_GNU | |
28 | ||
29 | #include "objc/objc.h" | |
30 | #include "objc/hash.h" | |
31 | #include <stdio.h> | |
32 | ||
33 | #ifndef __alpha__ /* alpha is currently not supported */ | |
34 | ||
35 | typedef int (*objc_typed_read_func)(void*, char*, int); | |
36 | typedef int (*objc_typed_write_func)(void*, const char*, int); | |
37 | typedef int (*objc_typed_flush_func)(void*); | |
38 | typedef int (*objc_typed_eof_func)(void*); | |
39 | ||
40 | #define OBJC_READONLY 0x01 | |
41 | #define OBJC_WRITEONLY 0x02 | |
42 | ||
43 | #define OBJC_MANAGED_STREAM 0x01 | |
44 | #define OBJC_FILE_STREAM 0x02 | |
45 | #define OBJC_MEMORY_STREAM 0x04 | |
46 | ||
47 | #define OBJC_TYPED_STREAM_VERSION 0x01 | |
48 | ||
49 | typedef struct objc_typed_stream { | |
50 | void* physical; | |
51 | cache_ptr object_table; /* read/written objects */ | |
52 | cache_ptr stream_table; /* other read/written but shared things.. */ | |
53 | cache_ptr class_table; /* class version mapping */ | |
54 | cache_ptr object_refs; /* forward references */ | |
55 | int mode; /* OBJC_READONLY or OBJC_WRITEONLY */ | |
56 | int type; /* MANAGED, FILE, MEMORY etc bit string */ | |
57 | int version; /* version used when writing */ | |
58 | int writing_root_p; | |
59 | objc_typed_read_func read; | |
60 | objc_typed_write_func write; | |
61 | objc_typed_eof_func eof; | |
62 | objc_typed_flush_func flush; | |
63 | } TypedStream; | |
64 | ||
65 | /* opcode masks */ | |
66 | #define _B_VALUE 0x1fU | |
67 | #define _B_CODE 0xe0U | |
68 | #define _B_SIGN 0x10U | |
69 | #define _B_NUMBER 0x0fU | |
70 | ||
71 | /* standard opcodes */ | |
72 | #define _B_INVALID 0x00U | |
73 | #define _B_SINT 0x20U | |
74 | #define _B_NINT 0x40U | |
75 | #define _B_SSTR 0x60U | |
76 | #define _B_NSTR 0x80U | |
77 | #define _B_RCOMM 0xa0U | |
78 | #define _B_UCOMM 0xc0U | |
79 | #define _B_EXT 0xe0U | |
80 | ||
81 | /* eXtension opcodes */ | |
82 | #define _BX_OBJECT 0x00U | |
83 | #define _BX_CLASS 0x01U | |
84 | #define _BX_SEL 0x02U | |
85 | #define _BX_OBJREF 0x03U | |
86 | #define _BX_OBJROOT 0x04U | |
87 | #define _BX_EXT 0x1fU | |
88 | ||
89 | /* | |
90 | ** Read and write objects as specified by TYPE. All the `last' | |
91 | ** arguments are pointers to the objects to read/write. | |
92 | */ | |
93 | ||
94 | int objc_write_type (TypedStream* stream, const char* type, const void* data); | |
95 | int objc_read_type (TypedStream* stream, const char* type, void* data); | |
96 | ||
97 | int objc_write_types (TypedStream* stream, const char* type, ...); | |
98 | int objc_read_types (TypedStream* stream, const char* type, ...); | |
99 | ||
100 | int objc_write_object_reference (TypedStream* stream, id object); | |
101 | int objc_write_root_object (TypedStream* stream, id object); | |
102 | ||
103 | int objc_get_stream_class_version (TypedStream* stream, Class* class); | |
104 | ||
105 | ||
106 | /* | |
107 | ** Convenience funtions | |
108 | */ | |
109 | ||
110 | int objc_write_array (TypedStream* stream, const char* type, | |
111 | int count, const void* data); | |
112 | int objc_read_array (TypedStream* stream, const char* type, | |
113 | int count, void* data); | |
114 | ||
115 | int objc_write_object (TypedStream* stream, id object); | |
116 | ||
117 | /* | |
118 | ** Open a typed stream for reading or writing. MODE may be either of | |
119 | ** OBJC_READONLY or OBJC_WRITEONLY. | |
120 | */ | |
121 | ||
122 | TypedStream* objc_open_typed_stream (FILE* physical, int mode); | |
123 | TypedStream* objc_open_typed_stream_for_file (const char* file_name, int mode); | |
124 | ||
125 | void objc_close_typed_stream (TypedStream* stream); | |
126 | ||
127 | BOOL objc_end_of_typed_stream (TypedStream* stream); | |
128 | void objc_flush_typed_stream (TypedStream* stream); | |
129 | ||
130 | #endif /* __alpha__ */ | |
131 | ||
132 | #endif /* not __typedstream_INCLUDE_GNU */ |