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/* Copyright (C) 2000, 2001, 2006, 2008 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 2.1 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 "libguile/_scm.h"
#include "libguile/eval.h"
#include "libguile/feature.h"
#include "libguile/gc.h"
#include "libguile/numbers.h"
#include "libguile/ports.h"
#include "libguile/root.h"
#include "libguile/strings.h"
#include "libguile/struct.h"
#include "libguile/validate.h"
#include "libguile/values.h"
SCM scm_values_vtable;
static SCM
print_values (SCM obj, SCM pwps)
{
SCM values = scm_struct_ref (obj, SCM_INUM0);
SCM port = SCM_PORT_WITH_PS_PORT (pwps);
scm_print_state *ps = SCM_PRINT_STATE (SCM_PORT_WITH_PS_PS (pwps));
scm_puts ("#<values ", port);
scm_iprin1 (values, port, ps);
scm_puts (">", port);
return SCM_UNSPECIFIED;
}
SCM_DEFINE (scm_values, "values", 0, 0, 1,
(SCM args),
"Delivers all of its arguments to its continuation. Except for\n"
"continuations created by the @code{call-with-values} procedure,\n"
"all continuations take exactly one value. The effect of\n"
"passing no value or more than one value to continuations that\n"
"were not created by @code{call-with-values} is unspecified.")
#define FUNC_NAME s_scm_values
{
long n;
SCM result;
SCM_VALIDATE_LIST_COPYLEN (1, args, n);
if (n == 1)
result = SCM_CAR (args);
else
{
result = scm_make_struct (scm_values_vtable, SCM_INUM0,
scm_list_1 (args));
}
return result;
}
#undef FUNC_NAME
void
scm_init_values (void)
{
SCM print = scm_c_define_subr ("%print-values", scm_tc7_subr_2,
print_values);
scm_values_vtable
= scm_permanent_object (
scm_make_vtable_vtable (scm_from_locale_string ("pr"),
SCM_INUM0, SCM_EOL));
SCM_SET_STRUCT_PRINTER (scm_values_vtable, print);
scm_add_feature ("values");
#include "libguile/values.x"
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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