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[cc65] / src / cc65 / check.c
1 /*****************************************************************************/
2 /*                                                                           */
3 /*                                  check.c                                  */
4 /*                                                                           */
5 /*                   Assert macros for the cc65 C compiler                   */
6 /*                                                                           */
7 /*                                                                           */
8 /*                                                                           */
9 /* (C) 1998     Ullrich von Bassewitz                                        */
10 /*              Wacholderweg 14                                              */
11 /*              D-70597 Stuttgart                                            */
12 /* EMail:       uz@musoftware.de                                             */
13 /*                                                                           */
14 /*                                                                           */
15 /* This software is provided 'as-is', without any expressed or implied       */
16 /* warranty.  In no event will the authors be held liable for any damages    */
17 /* arising from the use of this software.                                    */
18 /*                                                                           */
19 /* Permission is granted to anyone to use this software for any purpose,     */
20 /* including commercial applications, and to alter it and redistribute it    */
21 /* freely, subject to the following restrictions:                            */
22 /*                                                                           */
23 /* 1. The origin of this software must not be misrepresented; you must not   */
24 /*    claim that you wrote the original software. If you use this software   */
25 /*    in a product, an acknowledgment in the product documentation would be  */
26 /*    appreciated but is not required.                                       */
27 /* 2. Altered source versions must be plainly marked as such, and must not   */
28 /*    be misrepresented as being the original software.                      */
29 /* 3. This notice may not be removed or altered from any source              */
30 /*    distribution.                                                          */
31 /*                                                                           */
32 /*****************************************************************************/
33
34
35
36 #include <stdlib.h>
37
38 #include "error.h"
39 #include "check.h"
40
41
42
43 /*****************************************************************************/
44 /*                                   Data                                    */
45 /*****************************************************************************/
46
47
48
49 /* Predefined messages */
50 const char* _MsgInternalError   = "Internal error: ";
51 const char* _MsgAbstractCall    = "Call to abstract method";
52 const char* _MsgPrecondition    = "Precondition violated: ";
53 const char* _MsgCheckFailed     = "Check failed: ";
54 const char* _MsgProgramAborted  = "Program aborted: ";
55
56
57
58 static void _CheckFailed (const char* msg, const char* cond,
59                           int code, const char* file, unsigned line);
60
61 void (*CheckFailed) (const char* Msg, const char* Cond, int Code,
62                      const char* File, unsigned Line) = _CheckFailed;
63 /* Function pointer that is called from check if the condition code is true. */
64
65
66
67 /*****************************************************************************/
68 /*                                   Code                                    */
69 /*****************************************************************************/
70
71
72
73 static void _CheckFailed (const char* Msg, const char* Cond,
74                           int Code, const char* File, unsigned Line)
75 {
76     /* Log the error */
77     if (Code) {
78         Internal ("%s%s (= %d), file `%s', line %u", Msg, Cond, Code, File, Line);
79     } else {
80         Internal ("%s%s, file `%s', line %u", Msg, Cond, File, Line);
81     }
82
83     /* Use abort() to create a core for debugging */
84     abort ();
85 }
86
87
88
89 void Check (const char* Msg, const char* Cond, int Code,
90             const char* File, unsigned Line)
91 /* This function is called from all check macros (see below). It checks,
92  * wether the given Code is true (!= 0). If so, it calls the CheckFailed
93  * vector with the given strings. If not, it simply returns.
94  */
95 {
96     if (Code != 0) {
97         CheckFailed (Msg, Cond, Code, File, Line);
98     }
99 }
100
101
102