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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* Copyright (C) 2001, 2006, 2010, 2011 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "libguile/_scm.h"
#include "libguile/deprecation.h"
#include "libguile/strings.h"
#include "libguile/ports.h"
#include "libguile/private-options.h"
struct issued_warning {
struct issued_warning *prev;
const char *message;
};
static scm_i_pthread_mutex_t warn_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER;
static struct issued_warning *issued_warnings;
static int print_summary = 0;
void
scm_c_issue_deprecation_warning (const char *msg)
{
if (!SCM_WARN_DEPRECATED)
print_summary = 1;
else
{
struct issued_warning *iw;
scm_i_pthread_mutex_lock (&warn_lock);
for (iw = issued_warnings; iw; iw = iw->prev)
if (!strcmp (iw->message, msg))
{
msg = NULL;
break;
}
if (msg)
{
msg = strdup (msg);
iw = malloc (sizeof (struct issued_warning));
if (msg == NULL || iw == NULL)
/* Nothing sensible to do if you can't allocate this small
amount of memory. */
abort ();
iw->message = msg;
iw->prev = issued_warnings;
issued_warnings = iw;
}
scm_i_pthread_mutex_unlock (&warn_lock);
/* All this dance is to avoid printing to a port inside a mutex,
which could recurse and deadlock. */
if (msg)
{
if (scm_gc_running_p)
fprintf (stderr, "%s\n", msg);
else
{
scm_puts (msg, scm_current_warning_port ());
scm_newline (scm_current_warning_port ());
}
}
}
}
void
scm_c_issue_deprecation_warning_fmt (const char *msg, ...)
{
va_list ap;
char buf[512];
va_start (ap, msg);
vsnprintf (buf, 511, msg, ap);
va_end (ap);
buf[511] = '\0';
scm_c_issue_deprecation_warning (buf);
}
SCM_DEFINE(scm_issue_deprecation_warning,
"issue-deprecation-warning", 0, 0, 1,
(SCM msgs),
"Output @var{msgs} to @code{(current-error-port)} when this "
"is the first call to @code{issue-deprecation-warning} with "
"this specific @var{msgs}. Do nothing otherwise. "
"The argument @var{msgs} should be a list of strings; "
"they are printed in turn, each one followed by a newline.")
#define FUNC_NAME s_scm_issue_deprecation_warning
{
if (!SCM_WARN_DEPRECATED)
print_summary = 1;
else
{
SCM nl = scm_from_locale_string ("\n");
SCM msgs_nl = SCM_EOL;
char *c_msgs;
while (scm_is_pair (msgs))
{
if (!scm_is_null (msgs_nl))
msgs_nl = scm_cons (nl, msgs_nl);
msgs_nl = scm_cons (SCM_CAR (msgs), msgs_nl);
msgs = SCM_CDR (msgs);
}
msgs_nl = scm_string_append (scm_reverse_x (msgs_nl, SCM_EOL));
c_msgs = scm_to_locale_string (msgs_nl);
scm_c_issue_deprecation_warning (c_msgs);
free (c_msgs);
}
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
static void
print_deprecation_summary (void)
{
if (print_summary)
{
fputs ("\n"
"Some deprecated features have been used. Set the environment\n"
"variable GUILE_WARN_DEPRECATED to \"detailed\" and rerun the\n"
"program to get more information. Set it to \"no\" to suppress\n"
"this message.\n", stderr);
}
}
SCM_DEFINE(scm_include_deprecated_features,
"include-deprecated-features", 0, 0, 0,
(),
"Return @code{#t} iff deprecated features should be included "
"in public interfaces.")
#define FUNC_NAME s_scm_include_deprecated_features
{
return scm_from_bool (SCM_ENABLE_DEPRECATED == 1);
}
#undef FUNC_NAME
void
scm_init_deprecation ()
{
const char *level = getenv ("GUILE_WARN_DEPRECATED");
if (level == NULL)
level = SCM_WARN_DEPRECATED_DEFAULT;
if (!strcmp (level, "detailed"))
SCM_WARN_DEPRECATED = 1;
else if (!strcmp (level, "no"))
SCM_WARN_DEPRECATED = 0;
else
{
SCM_WARN_DEPRECATED = 0;
atexit (print_deprecation_summary);
}
#include "libguile/deprecation.x"
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/
|
