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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