X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=guile18%2Flibguile%2Fvalues.c;fp=guile18%2Flibguile%2Fvalues.c;h=e766edba13a4d62f3ee3b8c7e0dca22af91b808b;hb=139c38d9204dd07f6b235f83bae644faedbc63fd;hp=0000000000000000000000000000000000000000;hpb=652ed35a2013489d0a14fede6307cd2595abb2c4;p=lilypond.git diff --git a/guile18/libguile/values.c b/guile18/libguile/values.c new file mode 100644 index 0000000000..e766edba13 --- /dev/null +++ b/guile18/libguile/values.c @@ -0,0 +1,98 @@ +/* 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 +#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 ("#", 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: +*/