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- /* GNU Objective-C Typed Streams interface.
- Copyright (C) 1993, 1995 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- GNU CC is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
- License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
- /* As a special exception, if you link this library with files compiled
- with GCC to produce an executable, this does not cause the resulting
- executable to be covered by the GNU General Public License. This
- exception does not however invalidate any other reasons why the
- executable file might be covered by the GNU General Public License. */
-
- #ifndef __typedstream_INCLUDE_GNU
- #define __typedstream_INCLUDE_GNU
-
- #include "objc/objc.h"
- #include "objc/hash.h"
- #include <stdio.h>
-
- typedef int (*objc_typed_read_func)(void*, char*, int);
- typedef int (*objc_typed_write_func)(void*, const char*, int);
- typedef int (*objc_typed_flush_func)(void*);
- typedef int (*objc_typed_eof_func)(void*);
-
- #define OBJC_READONLY 0x01
- #define OBJC_WRITEONLY 0x02
-
- #define OBJC_MANAGED_STREAM 0x01
- #define OBJC_FILE_STREAM 0x02
- #define OBJC_MEMORY_STREAM 0x04
-
- #define OBJC_TYPED_STREAM_VERSION 0x01
-
- typedef struct objc_typed_stream {
- void* physical;
- cache_ptr object_table; /* read/written objects */
- cache_ptr stream_table; /* other read/written but shared things.. */
- cache_ptr class_table; /* class version mapping */
- cache_ptr object_refs; /* forward references */
- int mode; /* OBJC_READONLY or OBJC_WRITEONLY */
- int type; /* MANAGED, FILE, MEMORY etc bit string */
- int version; /* version used when writing */
- int writing_root_p;
- objc_typed_read_func read;
- objc_typed_write_func write;
- objc_typed_eof_func eof;
- objc_typed_flush_func flush;
- } TypedStream;
-
- /* opcode masks */
- #define _B_VALUE 0x1fU
- #define _B_CODE 0xe0U
- #define _B_SIGN 0x10U
- #define _B_NUMBER 0x0fU
-
- /* standard opcodes */
- #define _B_INVALID 0x00U
- #define _B_SINT 0x20U
- #define _B_NINT 0x40U
- #define _B_SSTR 0x60U
- #define _B_NSTR 0x80U
- #define _B_RCOMM 0xa0U
- #define _B_UCOMM 0xc0U
- #define _B_EXT 0xe0U
-
- /* eXtension opcodes */
- #define _BX_OBJECT 0x00U
- #define _BX_CLASS 0x01U
- #define _BX_SEL 0x02U
- #define _BX_OBJREF 0x03U
- #define _BX_OBJROOT 0x04U
- #define _BX_EXT 0x1fU
-
- /*
- ** Read and write objects as specified by TYPE. All the `last'
- ** arguments are pointers to the objects to read/write.
- */
-
- int objc_write_type (TypedStream* stream, const char* type, const void* data);
- int objc_read_type (TypedStream* stream, const char* type, void* data);
-
- int objc_write_types (TypedStream* stream, const char* type, ...);
- int objc_read_types (TypedStream* stream, const char* type, ...);
-
- int objc_write_object_reference (TypedStream* stream, id object);
- int objc_write_root_object (TypedStream* stream, id object);
-
- long objc_get_stream_class_version (TypedStream* stream, Class class);
-
-
- /*
- ** Convenience functions
- */
-
- int objc_write_array (TypedStream* stream, const char* type,
- int count, const void* data);
- int objc_read_array (TypedStream* stream, const char* type,
- int count, void* data);
-
- int objc_write_object (TypedStream* stream, id object);
- int objc_read_object (TypedStream* stream, id* object);
-
-
-
- /*
- ** Open a typed stream for reading or writing. MODE may be either of
- ** OBJC_READONLY or OBJC_WRITEONLY.
- */
-
- TypedStream* objc_open_typed_stream (FILE* physical, int mode);
- TypedStream* objc_open_typed_stream_for_file (const char* file_name, int mode);
-
- void objc_close_typed_stream (TypedStream* stream);
-
- BOOL objc_end_of_typed_stream (TypedStream* stream);
- void objc_flush_typed_stream (TypedStream* stream);
-
- #endif /* not __typedstream_INCLUDE_GNU */
-