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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
/**
* Diagnostic messages.
*/
#ifndef BFS_DIAG_H
#define BFS_DIAG_H
#include "ctx.h"
#include "config.h"
#include <stdarg.h>
/**
* static_assert() with an optional second argument.
*/
#if __STDC_VERSION__ >= 202311L
# define bfs_static_assert static_assert
#else
# define bfs_static_assert(...) bfs_static_assert_(__VA_ARGS__, #__VA_ARGS__, )
# define bfs_static_assert_(expr, msg, ...) _Static_assert(expr, msg)
#endif
/**
* A source code location.
*/
struct bfs_loc {
const char *file;
int line;
const char *func;
};
#define BFS_LOC_INIT { .file = __FILE__, .line = __LINE__, .func = __func__ }
/**
* Get the current source code location.
*/
#if __STDC_VERSION__ >= 202311L
# define bfs_location() (&(static const struct bfs_loc)BFS_LOC_INIT)
#else
# define bfs_location() (&(const struct bfs_loc)BFS_LOC_INIT)
#endif
/**
* Print a message to standard error and abort.
*/
BFS_FORMATTER(2, 3)
noreturn void bfs_abortf(const struct bfs_loc *loc, const char *format, ...);
/**
* Unconditional abort with a message.
*/
#define bfs_abort(...) bfs_abortf(bfs_location(), __VA_ARGS__)
/**
* Abort in debug builds; no-op in release builds.
*/
#ifdef NDEBUG
# define bfs_bug(...) ((void)0)
#else
# define bfs_bug bfs_abort
#endif
/**
* Unconditional assert.
*/
#define bfs_verify(...) \
bfs_verify_(#__VA_ARGS__, __VA_ARGS__, "", "")
#define bfs_verify_(str, cond, format, ...) \
((cond) ? (void)0 : bfs_abort( \
sizeof(format) > 1 \
? "%.0s" format "%s%s" \
: "Assertion failed: `%s`%s", \
str, __VA_ARGS__))
/**
* Assert in debug builds; no-op in release builds.
*/
#ifdef NDEBUG
# define bfs_assert(...) ((void)0)
#else
# define bfs_assert bfs_verify
#endif
struct bfs_expr;
/**
* Like perror(), but decorated like bfs_error().
*/
void bfs_perror(const struct bfs_ctx *ctx, const char *str);
/**
* Shorthand for printing error messages.
*/
BFS_FORMATTER(2, 3)
void bfs_error(const struct bfs_ctx *ctx, const char *format, ...);
/**
* Shorthand for printing warning messages.
*
* @return Whether a warning was printed.
*/
BFS_FORMATTER(2, 3)
bool bfs_warning(const struct bfs_ctx *ctx, const char *format, ...);
/**
* Shorthand for printing debug messages.
*
* @return Whether a debug message was printed.
*/
BFS_FORMATTER(3, 4)
bool bfs_debug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, ...);
/**
* bfs_error() variant that takes a va_list.
*/
BFS_FORMATTER(2, 0)
void bfs_verror(const struct bfs_ctx *ctx, const char *format, va_list args);
/**
* bfs_warning() variant that takes a va_list.
*/
BFS_FORMATTER(2, 0)
bool bfs_vwarning(const struct bfs_ctx *ctx, const char *format, va_list args);
/**
* bfs_debug() variant that takes a va_list.
*/
BFS_FORMATTER(3, 0)
bool bfs_vdebug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, va_list args);
/**
* Print the error message prefix.
*/
void bfs_error_prefix(const struct bfs_ctx *ctx);
/**
* Print the warning message prefix.
*/
bool bfs_warning_prefix(const struct bfs_ctx *ctx);
/**
* Print the debug message prefix.
*/
bool bfs_debug_prefix(const struct bfs_ctx *ctx, enum debug_flags flag);
/**
* Highlight parts of the command line in an error message.
*/
void bfs_argv_error(const struct bfs_ctx *ctx, const bool args[]);
/**
* Highlight parts of an expression in an error message.
*/
void bfs_expr_error(const struct bfs_ctx *ctx, const struct bfs_expr *expr);
/**
* Highlight parts of the command line in a warning message.
*/
bool bfs_argv_warning(const struct bfs_ctx *ctx, const bool args[]);
/**
* Highlight parts of an expression in a warning message.
*/
bool bfs_expr_warning(const struct bfs_ctx *ctx, const struct bfs_expr *expr);
#endif // BFS_DIAG_H
|
