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92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libguile/_scm.h"
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#include "libguile/eval.h"
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#include "libguile/feature.h"
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#include "libguile/gc.h"
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#include "libguile/numbers.h"
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#include "libguile/ports.h"
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#include "libguile/root.h"
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#include "libguile/strings.h"
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#include "libguile/struct.h"
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#include "libguile/validate.h"
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#include "libguile/values.h"
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SCM scm_values_vtable;
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static SCM
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print_values (SCM obj, SCM pwps)
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{
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SCM values = scm_struct_ref (obj, SCM_INUM0);
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SCM port = SCM_PORT_WITH_PS_PORT (pwps);
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scm_print_state *ps = SCM_PRINT_STATE (SCM_PORT_WITH_PS_PS (pwps));
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scm_puts ("#<values ", port);
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scm_iprin1 (values, port, ps);
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scm_puts (">", port);
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return SCM_UNSPECIFIED;
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}
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SCM_DEFINE (scm_values, "values", 0, 0, 1,
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(SCM args),
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"Delivers all of its arguments to its continuation. Except for\n"
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"continuations created by the @code{call-with-values} procedure,\n"
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"all continuations take exactly one value. The effect of\n"
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"passing no value or more than one value to continuations that\n"
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"were not created by @code{call-with-values} is unspecified.")
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#define FUNC_NAME s_scm_values
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{
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long n;
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SCM result;
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SCM_VALIDATE_LIST_COPYLEN (1, args, n);
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if (n == 1)
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result = SCM_CAR (args);
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else
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{
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result = scm_make_struct (scm_values_vtable, SCM_INUM0,
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scm_list_1 (args));
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}
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return result;
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}
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#undef FUNC_NAME
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void
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scm_init_values (void)
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{
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SCM print = scm_c_define_subr ("%print-values", scm_tc7_subr_2,
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print_values);
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scm_values_vtable
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= scm_permanent_object (scm_make_vtable_vtable (scm_makfrom0str ("pr"),
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SCM_INUM0, SCM_EOL));
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SCM_SET_STRUCT_PRINTER (scm_values_vtable, print);
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scm_add_feature ("values");
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#include "libguile/values.x"
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}
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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