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1 | /* do not edit automatically generated by mc from StdIO. */ |
2 | /* StdIO.def provides general Read and Write procedures. | |
3 | ||
83ffe9cd | 4 | Copyright (C) 2001-2023 Free Software Foundation, Inc. |
1eee94d3 GM |
5 | Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
6 | ||
7 | This file is part of GNU Modula-2. | |
8 | ||
9 | GNU Modula-2 is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU Modula-2 is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | General Public License for more details. | |
18 | ||
19 | Under Section 7 of GPL version 3, you are granted additional | |
20 | permissions described in the GCC Runtime Library Exception, version | |
21 | 3.1, as published by the Free Software Foundation. | |
22 | ||
23 | You should have received a copy of the GNU General Public License and | |
24 | a copy of the GCC Runtime Library Exception along with this program; | |
25 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
26 | <http://www.gnu.org/licenses/>. */ | |
27 | ||
28 | ||
29 | #if !defined (_StdIO_H) | |
30 | # define _StdIO_H | |
31 | ||
32 | #include "config.h" | |
33 | #include "system.h" | |
34 | # ifdef __cplusplus | |
35 | extern "C" { | |
36 | # endif | |
37 | # if !defined (PROC_D) | |
38 | # define PROC_D | |
39 | typedef void (*PROC_t) (void); | |
40 | typedef struct { PROC_t proc; } PROC; | |
41 | # endif | |
42 | ||
43 | ||
44 | # if defined (_StdIO_C) | |
45 | # define EXTERN | |
46 | # else | |
47 | # define EXTERN extern | |
48 | # endif | |
49 | ||
50 | typedef struct StdIO_ProcWrite_p StdIO_ProcWrite; | |
51 | ||
52 | typedef struct StdIO_ProcRead_p StdIO_ProcRead; | |
53 | ||
54 | typedef void (*StdIO_ProcWrite_t) (char); | |
55 | struct StdIO_ProcWrite_p { StdIO_ProcWrite_t proc; }; | |
56 | ||
57 | typedef void (*StdIO_ProcRead_t) (char *); | |
58 | struct StdIO_ProcRead_p { StdIO_ProcRead_t proc; }; | |
59 | ||
60 | ||
61 | /* | |
62 | Read - is the generic procedure that all higher application layers | |
63 | should use to receive a character. | |
64 | */ | |
65 | ||
66 | EXTERN void StdIO_Read (char *ch); | |
67 | ||
68 | /* | |
69 | Write - is the generic procedure that all higher application layers | |
70 | should use to emit a character. | |
71 | */ | |
72 | ||
73 | EXTERN void StdIO_Write (char ch); | |
74 | ||
75 | /* | |
76 | PushOutput - pushes the current Write procedure onto a stack, | |
77 | any future references to Write will actually invoke | |
78 | procedure, p. | |
79 | */ | |
80 | ||
81 | EXTERN void StdIO_PushOutput (StdIO_ProcWrite p); | |
82 | ||
83 | /* | |
84 | PopOutput - restores Write to use the previous output procedure. | |
85 | */ | |
86 | ||
87 | EXTERN void StdIO_PopOutput (void); | |
88 | ||
89 | /* | |
90 | GetCurrentOutput - returns the current output procedure. | |
91 | */ | |
92 | ||
93 | EXTERN StdIO_ProcWrite StdIO_GetCurrentOutput (void); | |
94 | ||
95 | /* | |
96 | PushInput - pushes the current Read procedure onto a stack, | |
97 | any future references to Read will actually invoke | |
98 | procedure, p. | |
99 | */ | |
100 | ||
101 | EXTERN void StdIO_PushInput (StdIO_ProcRead p); | |
102 | ||
103 | /* | |
104 | PopInput - restores Write to use the previous output procedure. | |
105 | */ | |
106 | ||
107 | EXTERN void StdIO_PopInput (void); | |
108 | ||
109 | /* | |
110 | GetCurrentInput - returns the current input procedure. | |
111 | */ | |
112 | ||
113 | EXTERN StdIO_ProcRead StdIO_GetCurrentInput (void); | |
114 | # ifdef __cplusplus | |
115 | } | |
116 | # endif | |
117 | ||
118 | # undef EXTERN | |
119 | #endif |