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
|
/*
Copyright (C) 2019 Leo Tenenbaum.
This file is part of toc. toc is distributed under version 3 of the GNU General Public License, without any warranty whatsoever.
You should have received a copy of the GNU General Public License along with toc. If not, see <https://www.gnu.org/licenses/>.
*/
#define USE_COLORED_TEXT 1
#if USE_COLORED_TEXT
#define TEXT_ERROR(x) "\x1b[91m" x "\x1b[0m"
#define TEXT_INFO(x) "\x1b[94m" x "\x1b[0m"
#define TEXT_WARN(x) "\x1b[93m" x "\x1b[0m"
#define TEXT_IMPORTANT(x) "\x1b[1m" x "\x1b[0m"
#else
#define TEXT_ERROR(x) x
#define TEXT_INFO(x) x
#define TEXT_WARN(x) x
#define TEXT_IMPORTANT(x) x
#endif
static inline const char *ordinals(size_t x) {
switch (x % 10) {
case 1: return "st";
case 2: return "nd";
case 3: return "rd";
default: return "th";
}
}
/* Write directly to the error file */
static void err_fwrite(const void *data, size_t size, size_t n) {
fwrite(data, size, n, stderr);
}
static void err_fprint(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
static void err_vfprint(const char *fmt, va_list args) {
vfprintf(stderr, fmt, args);
}
static void err_print_header_(Location where) {
err_fprint(TEXT_ERROR("error:") " at line %lu of %s:\n", (unsigned long)where.line, where.ctx->filename);
}
static void info_print_header_(Location where) {
err_fprint(TEXT_INFO("info:") " at line %lu of %s:\n", (unsigned long)where.line, where.ctx->filename);
}
static void warn_print_header_(Location where) {
err_fprint(TEXT_WARN("warning:") " at line %lu of %s:\n", (unsigned long)where.line, where.ctx->filename);
}
static void err_print_location_text(Location where) {
const char *text = where.code;
const char *end = strchr(text, '\n');
int has_newline = end != NULL;
if (!has_newline)
end = strchr(text, '\0');
assert(end);
err_fprint("\there: --> ");
if (!has_newline)
err_fprint("<end of file>");
else
err_fwrite(text, 1, (size_t)(end - text));
err_fprint("\n");
}
static void err_print_footer_(Location where) {
ErrCtx *ctx = where.ctx;
err_fprint("\n");
err_print_location_text(where);
arr_foreach(ctx->instance_stack, Location, inst) {
err_fprint("While generating the instance of a function\n");
err_print_location_text(*inst);
}
}
/* Write nicely-formatted errors to the error file */
static void err_vprint(Location where, const char *fmt, va_list args) {
if (!where.ctx->enabled) return;
err_print_header_(where);
err_vfprint(fmt, args);
err_print_footer_(where);
}
static void err_print_(int line, const char *file, Location where, const char *fmt, ...) {
va_list args;
if (!where.ctx->enabled) return;
if (file)
err_fprint("Generated by line %d of %s:\n", line, file);
va_start(args, fmt);
err_vprint(where, fmt, args);
va_end(args);
}
#define err_print(...) err_print_(__LINE__, __FILE__, __VA_ARGS__)
static void info_print(Location where, const char *fmt, ...) {
va_list args;
if (!where.ctx->enabled) return;
va_start(args, fmt);
info_print_header_(where);
err_vfprint(fmt, args);
err_print_footer_(where);
va_end(args);
}
static void warn_print(Location where, const char *fmt, ...) {
va_list args;
if (!where.ctx->enabled) return;
va_start(args, fmt);
warn_print_header_(where);
err_vfprint(fmt, args);
err_print_footer_(where);
va_end(args);
}
static void *err_malloc(size_t size) {
void *ret = malloc(size);
if (!ret) {
fprintf(stderr, "Error: Out of memory.\n");
abort();
}
return ret;
}
static void *err_calloc(size_t n, size_t size) {
void *ret = calloc(n, size);
if (!ret) {
fprintf(stderr, "Error: Out of memory.\n");
abort();
}
return ret;
}
static void *err_realloc(void *data, size_t new_size) {
void *ret = realloc(data, new_size);
if (!ret) {
fprintf(stderr, "Error: Out of memory.\n");
abort();
}
return ret;
}
|
