1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
(* Debug.mod provides some simple debugging routines.
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/>. *)
IMPLEMENTATION MODULE Debug ;
FROM ASCII IMPORT cr, nul, lf ;
FROM NumberIO IMPORT CardToStr ;
FROM StdIO IMPORT Write ;
FROM libc IMPORT exit ;
(*
Halt - writes a message in the format:
Module:Function:Line:Message
It then terminates by calling HALT.
*)
PROCEDURE Halt (Message,
Module,
Function: ARRAY OF CHAR ;
LineNo : CARDINAL) ;
CONST
MaxNoOfDigits = 12 ; (* should be large enough for most source files.. *)
VAR
No : ARRAY [0..MaxNoOfDigits] OF CHAR ;
BEGIN
DebugString(Module) ;
DebugString(':') ;
DebugString(Function) ;
DebugString(':') ;
CardToStr(LineNo, 0, No) ;
DebugString(':') ;
DebugString(No) ;
DebugString(':') ;
DebugString(Message) ;
DebugString('\n') ;
HALT
END Halt ;
(*
DebugString - writes a string to the debugging device (Scn.Write).
It interprets \n as carriage return, linefeed.
*)
PROCEDURE DebugString (a: ARRAY OF CHAR) ;
VAR
n, high: CARDINAL ;
BEGIN
high := HIGH( a ) ;
n := 0 ;
WHILE (n <= high) AND (a[n] # nul) DO
IF a[n]='\'
THEN
IF n+1<=high
THEN
IF a[n+1]='n'
THEN
WriteLn ;
INC(n)
ELSIF a[n+1]='\'
THEN
Write('\') ;
INC(n)
END
END
ELSE
Write( a[n] )
END ;
INC( n )
END
END DebugString ;
(*
WriteLn - writes a carriage return and a newline
character.
*)
PROCEDURE WriteLn ;
BEGIN
Write(cr) ;
Write(lf)
END WriteLn ;
END Debug.
|
