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/* do not edit automatically generated by mc from StdIO. */
/* StdIO.def provides general Read and Write procedures.
Copyright (C) 2001-2023 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 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 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#if !defined (_StdIO_H)
# define _StdIO_H
#include "config.h"
#include "system.h"
# ifdef __cplusplus
extern "C" {
# endif
#include <stdbool.h>
# if !defined (PROC_D)
# define PROC_D
typedef void (*PROC_t) (void);
typedef struct { PROC_t proc; } PROC;
# endif
# if defined (_StdIO_C)
# define EXTERN
# else
# define EXTERN extern
# endif
typedef struct StdIO_ProcWrite_p StdIO_ProcWrite;
typedef struct StdIO_ProcRead_p StdIO_ProcRead;
typedef void (*StdIO_ProcWrite_t) (char);
struct StdIO_ProcWrite_p { StdIO_ProcWrite_t proc; };
typedef void (*StdIO_ProcRead_t) (char *);
struct StdIO_ProcRead_p { StdIO_ProcRead_t proc; };
/*
Read - is the generic procedure that all higher application layers
should use to receive a character.
*/
EXTERN void StdIO_Read (char *ch);
/*
Write - is the generic procedure that all higher application layers
should use to emit a character.
*/
EXTERN void StdIO_Write (char ch);
/*
PushOutput - pushes the current Write procedure onto a stack,
any future references to Write will actually invoke
procedure, p.
*/
EXTERN void StdIO_PushOutput (StdIO_ProcWrite p);
/*
PopOutput - restores Write to use the previous output procedure.
*/
EXTERN void StdIO_PopOutput (void);
/*
GetCurrentOutput - returns the current output procedure.
*/
EXTERN StdIO_ProcWrite StdIO_GetCurrentOutput (void);
/*
PushInput - pushes the current Read procedure onto a stack,
any future references to Read will actually invoke
procedure, p.
*/
EXTERN void StdIO_PushInput (StdIO_ProcRead p);
/*
PopInput - restores Write to use the previous output procedure.
*/
EXTERN void StdIO_PopInput (void);
/*
GetCurrentInput - returns the current input procedure.
*/
EXTERN StdIO_ProcRead StdIO_GetCurrentInput (void);
# ifdef __cplusplus
}
# endif
# undef EXTERN
#endif
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