--- /dev/null
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 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
+ */
+
+\f
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include "libguile/_scm.h"
+#include "libguile/procprop.h"
+#include "libguile/root.h"
+
+#include "libguile/gsubr.h"
+#include "libguile/deprecation.h"
+\f
+/*
+ * gsubr.c
+ * Provide `gsubrs' -- subrs taking a prescribed number of required, optional,
+ * and rest arguments.
+ */
+
+/* #define GSUBR_TEST */
+
+SCM_GLOBAL_SYMBOL (scm_sym_name, "name");
+
+SCM scm_f_gsubr_apply;
+
+static SCM
+create_gsubr (int define, const char *name,
+ int req, int opt, int rst, SCM (*fcn)())
+{
+ SCM subr;
+
+ switch (SCM_GSUBR_MAKTYPE (req, opt, rst))
+ {
+ case SCM_GSUBR_MAKTYPE(0, 0, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_0, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(1, 0, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_1, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(0, 1, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_1o, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(1, 1, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_2o, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(2, 0, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_2, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(3, 0, 0):
+ subr = scm_c_make_subr (name, scm_tc7_subr_3, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(0, 0, 1):
+ subr = scm_c_make_subr (name, scm_tc7_lsubr, fcn);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(2, 0, 1):
+ subr = scm_c_make_subr (name, scm_tc7_lsubr_2, fcn);
+ create_subr:
+ if (define)
+ scm_define (SCM_SUBR_ENTRY(subr).name, subr);
+ return subr;
+ default:
+ {
+ SCM cclo = scm_makcclo (scm_f_gsubr_apply, 3L);
+ SCM subr = scm_c_make_subr (name, scm_tc7_subr_0, fcn);
+ SCM sym = SCM_SUBR_ENTRY(subr).name;
+ if (SCM_GSUBR_MAX < req + opt + rst)
+ {
+ fprintf (stderr,
+ "ERROR in scm_c_make_gsubr: too many args (%d) to %s\n",
+ req + opt + rst, name);
+ exit (1);
+ }
+ SCM_SET_GSUBR_PROC (cclo, subr);
+ SCM_SET_GSUBR_TYPE (cclo,
+ scm_from_int (SCM_GSUBR_MAKTYPE (req, opt, rst)));
+ if (SCM_REC_PROCNAMES_P)
+ scm_set_procedure_property_x (cclo, scm_sym_name, sym);
+ if (define)
+ scm_define (sym, cclo);
+ return cclo;
+ }
+ }
+}
+
+SCM
+scm_c_make_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)())
+{
+ return create_gsubr (0, name, req, opt, rst, fcn);
+}
+
+SCM
+scm_c_define_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)())
+{
+ return create_gsubr (1, name, req, opt, rst, fcn);
+}
+
+static SCM
+create_gsubr_with_generic (int define,
+ const char *name,
+ int req,
+ int opt,
+ int rst,
+ SCM (*fcn)(),
+ SCM *gf)
+{
+ SCM subr;
+
+ switch (SCM_GSUBR_MAKTYPE(req, opt, rst))
+ {
+ case SCM_GSUBR_MAKTYPE(0, 0, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_0, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(1, 0, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_1, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(0, 1, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_1o, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(1, 1, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_2o, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(2, 0, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_2, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(3, 0, 0):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_subr_3, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(0, 0, 1):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_lsubr, fcn, gf);
+ goto create_subr;
+ case SCM_GSUBR_MAKTYPE(2, 0, 1):
+ subr = scm_c_make_subr_with_generic (name, scm_tc7_lsubr_2, fcn, gf);
+ create_subr:
+ if (define)
+ scm_define (SCM_SUBR_ENTRY(subr).name, subr);
+ return subr;
+ default:
+ ;
+ }
+ scm_misc_error ("scm_c_make_gsubr_with_generic",
+ "can't make primitive-generic with this arity",
+ SCM_EOL);
+ return SCM_BOOL_F; /* never reached */
+}
+
+SCM
+scm_c_make_gsubr_with_generic (const char *name,
+ int req,
+ int opt,
+ int rst,
+ SCM (*fcn)(),
+ SCM *gf)
+{
+ return create_gsubr_with_generic (0, name, req, opt, rst, fcn, gf);
+}
+
+SCM
+scm_c_define_gsubr_with_generic (const char *name,
+ int req,
+ int opt,
+ int rst,
+ SCM (*fcn)(),
+ SCM *gf)
+{
+ return create_gsubr_with_generic (1, name, req, opt, rst, fcn, gf);
+}
+
+
+SCM
+scm_gsubr_apply (SCM args)
+#define FUNC_NAME "scm_gsubr_apply"
+{
+ SCM self = SCM_CAR (args);
+ SCM (*fcn)() = SCM_SUBRF (SCM_GSUBR_PROC (self));
+ SCM v[SCM_GSUBR_MAX];
+ int typ = scm_to_int (SCM_GSUBR_TYPE (self));
+ long i, n = SCM_GSUBR_REQ (typ) + SCM_GSUBR_OPT (typ) + SCM_GSUBR_REST (typ);
+#if 0
+ if (n > SCM_GSUBR_MAX)
+ scm_misc_error (FUNC_NAME,
+ "Function ~S has illegal arity ~S.",
+ scm_list_2 (self, scm_from_int (n)));
+#endif
+ args = SCM_CDR (args);
+ for (i = 0; i < SCM_GSUBR_REQ (typ); i++) {
+ if (scm_is_null (args))
+ scm_wrong_num_args (SCM_SNAME (SCM_GSUBR_PROC (self)));
+ v[i] = SCM_CAR(args);
+ args = SCM_CDR(args);
+ }
+ for (; i < SCM_GSUBR_REQ (typ) + SCM_GSUBR_OPT (typ); i++) {
+ if (SCM_NIMP (args)) {
+ v[i] = SCM_CAR (args);
+ args = SCM_CDR(args);
+ }
+ else
+ v[i] = SCM_UNDEFINED;
+ }
+ if (SCM_GSUBR_REST(typ))
+ v[i] = args;
+ else if (!scm_is_null (args))
+ scm_wrong_num_args (SCM_SNAME (SCM_GSUBR_PROC (self)));
+ switch (n) {
+ case 2: return (*fcn)(v[0], v[1]);
+ case 3: return (*fcn)(v[0], v[1], v[2]);
+ case 4: return (*fcn)(v[0], v[1], v[2], v[3]);
+ case 5: return (*fcn)(v[0], v[1], v[2], v[3], v[4]);
+ case 6: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5]);
+ case 7: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6]);
+ case 8: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]);
+ case 9: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8]);
+ case 10: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]);
+ }
+ return SCM_BOOL_F; /* Never reached. */
+}
+#undef FUNC_NAME
+
+
+#ifdef GSUBR_TEST
+/* A silly example, taking 2 required args, 1 optional, and
+ a scm_list of rest args
+ */
+SCM
+gsubr_21l(SCM req1, SCM req2, SCM opt, SCM rst)
+{
+ scm_puts ("gsubr-2-1-l:\n req1: ", scm_cur_outp);
+ scm_display(req1, scm_cur_outp);
+ scm_puts ("\n req2: ", scm_cur_outp);
+ scm_display(req2, scm_cur_outp);
+ scm_puts ("\n opt: ", scm_cur_outp);
+ scm_display(opt, scm_cur_outp);
+ scm_puts ("\n rest: ", scm_cur_outp);
+ scm_display(rst, scm_cur_outp);
+ scm_newline(scm_cur_outp);
+ return SCM_UNSPECIFIED;
+}
+#endif
+
+
+void
+scm_init_gsubr()
+{
+ scm_f_gsubr_apply = scm_c_make_subr ("gsubr-apply", scm_tc7_lsubr,
+ scm_gsubr_apply);
+#ifdef GSUBR_TEST
+ scm_c_define_gsubr ("gsubr-2-1-l", 2, 1, 1, gsubr_21l); /* example */
+#endif
+
+#include "libguile/gsubr.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
projects / lilypond.git / blobdiff