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/* Copyright (C) 2001 Free Software Foundation, Inc.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include <stdio.h>
#include <string.h>
#include "libguile/_scm.h"
#include "libguile/deprecation.h"
#include "libguile/hashtab.h"
#include "libguile/strings.h"
#include "libguile/ports.h"
#if (SCM_DEBUG_DEPRECATED == 0)
/* This is either a boolean (when a summary should be printed) or a
hashtab (when detailed warnings shouold be printed).
*/
static SCM issued_msgs;
void
scm_c_issue_deprecation_warning (const char *msg)
{
if (SCM_BOOLP (issued_msgs))
issued_msgs = SCM_BOOL_T;
else
scm_issue_deprecation_warning (scm_list_1 (scm_makfrom0str (msg)));
}
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{msg}. 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_BOOLP (issued_msgs))
issued_msgs = SCM_BOOL_T;
else
{
SCM handle = scm_hash_create_handle_x (issued_msgs, msgs, SCM_BOOL_F);
if (SCM_CDR (handle) == SCM_BOOL_F)
{
while (SCM_CONSP (msgs))
{
scm_display (SCM_CAR (msgs), scm_current_error_port ());
scm_newline (scm_current_error_port ());
msgs = SCM_CDR (msgs);
}
SCM_SETCDR (handle, SCM_BOOL_T);
}
}
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
static void
print_deprecation_summary (void)
{
if (issued_msgs == SCM_BOOL_T)
{
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);
}
}
#endif
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
{
#if SCM_DEBUG_DEPRECATED == 0
return SCM_BOOL_T;
#else
return SCM_BOOL_F;
#endif
}
#undef FUNC_NAME
void
scm_init_deprecation ()
{
#if SCM_DEBUG_DEPRECATED == 0
const char *level = getenv ("GUILE_WARN_DEPRECATED");
if (level == NULL)
level = SCM_WARN_DEPRECATED_DEFAULT;
if (!strcmp (level, "detailed"))
issued_msgs = scm_permanent_object (scm_c_make_hash_table (17));
else if (!strcmp (level, "no"))
issued_msgs = SCM_BOOL_F;
else
{
issued_msgs = SCM_BOOL_F;
atexit (print_deprecation_summary);
}
#endif
#include "libguile/deprecation.x"
}
/*
Local Variables:
c-file-style: "gnu"
End: */
|
