mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-01 12:20:26 +02:00
1bbd0b849f
function headers and argument checking. Switched SCM_PROC, SCM_PROC1 macros to be GUILE_PROC, GUILE_PROC1 (may change names later, but was useful to keep old versions around while migrate) that has docstrings and argument lists embedded in the GUILE_PROC macro invocations that expand into a function header. Use lots of new SCM_VALIDATE_* macros to simplify error checking and reduce tons of redundancy. This is very similar to what I did for Scwm. Note that none of the extraction of the docstrings, nor software engineering checks of Scwm is yet added to Guile. I'll work on that tomorrow, I expect. * Makefile.am: Added scm_validate.h to modinclude_HEADERS. * chars.c: Added docstrings for the primitives defined in here. * snarf.h: Added GUILE_PROC, GUILE_PROC1. Added SCM_REGISTER_PROC to be like old SCM_PROC, though old SCM_PROC still remains for now. Changed naming convention for the s_foo string name of the primitive to be s_scm_foo for ease of use with the macro. * scm_validate.h: Lots of new SCM_VALIDATE macros to simplify argument checking through guile. Maybe some of these should be folded into the header file for the types they check, but for now it was easiest to just stick them all in one place.
215 lines
7.5 KiB
C
215 lines
7.5 KiB
C
/* Copyright (C) 1995,1996,1997,1998, 1999 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., 59 Temple Place, Suite 330,
|
||
* Boston, MA 02111-1307 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. */
|
||
|
||
/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
|
||
gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
|
||
|
||
|
||
|
||
#include <stdio.h>
|
||
#include "_scm.h"
|
||
#include "genio.h"
|
||
#include "procprop.h"
|
||
|
||
#include "gsubr.h"
|
||
|
||
/*
|
||
* gsubr.c
|
||
* Provide `gsubrs' -- subrs taking a prescribed number of required, optional,
|
||
* and rest arguments.
|
||
*/
|
||
|
||
/* #define GSUBR_TEST */
|
||
|
||
SCM scm_sym_name;
|
||
SCM scm_f_gsubr_apply;
|
||
|
||
SCM
|
||
scm_make_gsubr(const char *name,int req,int opt,int rst,SCM (*fcn)())
|
||
{
|
||
switch SCM_GSUBR_MAKTYPE(req, opt, rst) {
|
||
case SCM_GSUBR_MAKTYPE(0, 0, 0): return scm_make_subr(name, scm_tc7_subr_0, fcn);
|
||
case SCM_GSUBR_MAKTYPE(1, 0, 0): return scm_make_subr(name, scm_tc7_subr_1, fcn);
|
||
case SCM_GSUBR_MAKTYPE(0, 1, 0): return scm_make_subr(name, scm_tc7_subr_1o, fcn);
|
||
case SCM_GSUBR_MAKTYPE(1, 1, 0): return scm_make_subr(name, scm_tc7_subr_2o, fcn);
|
||
case SCM_GSUBR_MAKTYPE(2, 0, 0): return scm_make_subr(name, scm_tc7_subr_2, fcn);
|
||
case SCM_GSUBR_MAKTYPE(3, 0, 0): return scm_make_subr(name, scm_tc7_subr_3, fcn);
|
||
case SCM_GSUBR_MAKTYPE(0, 0, 1): return scm_make_subr(name, scm_tc7_lsubr, fcn);
|
||
case SCM_GSUBR_MAKTYPE(2, 0, 1): return scm_make_subr(name, scm_tc7_lsubr_2, fcn);
|
||
default:
|
||
{
|
||
SCM symcell = scm_sysintern (name, SCM_UNDEFINED);
|
||
SCM cclo = scm_makcclo (scm_f_gsubr_apply, 3L);
|
||
if (SCM_GSUBR_MAX < req + opt + rst) {
|
||
fputs("ERROR in scm_make_gsubr: too many args\n", stderr);
|
||
exit (1);
|
||
}
|
||
SCM_GSUBR_PROC (cclo) = scm_make_subr_opt (name, scm_tc7_subr_0, fcn, 0);
|
||
SCM_GSUBR_TYPE (cclo) = SCM_MAKINUM (SCM_GSUBR_MAKTYPE (req, opt, rst));
|
||
SCM_SETCDR (symcell, cclo);
|
||
#ifdef DEBUG_EXTENSIONS
|
||
if (SCM_REC_PROCNAMES_P)
|
||
scm_set_procedure_property_x (cclo, scm_sym_name, SCM_CAR (symcell));
|
||
#endif
|
||
return cclo;
|
||
}
|
||
}
|
||
}
|
||
|
||
SCM
|
||
scm_make_gsubr_with_generic (const char *name,
|
||
int req,
|
||
int opt,
|
||
int rst,
|
||
SCM (*fcn)(),
|
||
SCM *gf)
|
||
{
|
||
switch SCM_GSUBR_MAKTYPE(req, opt, rst) {
|
||
case SCM_GSUBR_MAKTYPE(0, 0, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_0, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(1, 0, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_1, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(0, 1, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_1o, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(1, 1, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_2o, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(2, 0, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_2, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(3, 0, 0):
|
||
return scm_make_subr_with_generic(name, scm_tc7_subr_3, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(0, 0, 1):
|
||
return scm_make_subr_with_generic(name, scm_tc7_lsubr, fcn, gf);
|
||
case SCM_GSUBR_MAKTYPE(2, 0, 1):
|
||
return scm_make_subr_with_generic(name, scm_tc7_lsubr_2, fcn, gf);
|
||
default:
|
||
;
|
||
}
|
||
scm_misc_error ("scm_make_gsubr_with_generic",
|
||
"can't make primitive-generic with this arity",
|
||
SCM_EOL);
|
||
return 0; /* never reached */
|
||
}
|
||
|
||
|
||
GUILE_PROC(scm_gsubr_apply, "gsubr-apply", 0, 0, 1,
|
||
(SCM args),
|
||
"")
|
||
#define FUNC_NAME s_scm_gsubr_apply
|
||
{
|
||
SCM self = SCM_CAR(args);
|
||
SCM (*fcn)() = SCM_SUBRF(SCM_GSUBR_PROC(self));
|
||
SCM v[10]; /* must agree with greatest supported arity */
|
||
int typ = SCM_INUM(SCM_GSUBR_TYPE(self));
|
||
int i, n = SCM_GSUBR_REQ(typ) + SCM_GSUBR_OPT(typ) + SCM_GSUBR_REST(typ);
|
||
#if 0
|
||
SCM_ASSERT(n <= sizeof(v)/sizeof(SCM),
|
||
self, "internal programming error", FUNC_NAME);
|
||
#endif
|
||
args = SCM_CDR(args);
|
||
for (i = 0; i < SCM_GSUBR_REQ(typ); i++) {
|
||
#ifndef SCM_RECKLESS
|
||
if (SCM_IMP(args))
|
||
wnargs: scm_wrong_num_args (SCM_SNAME(SCM_GSUBR_PROC(self)));
|
||
#endif
|
||
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
|
||
SCM_ASRTGO(SCM_NULLP(args), wnargs);
|
||
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 0; /* 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()
|
||
{
|
||
/* GJB:FIXME:: why is this file not including the .x file? */
|
||
scm_f_gsubr_apply = scm_make_subr(s_scm_gsubr_apply, scm_tc7_lsubr, scm_gsubr_apply);
|
||
scm_sym_name = SCM_CAR (scm_sysintern ("name", SCM_UNDEFINED));
|
||
scm_permanent_object (scm_sym_name);
|
||
#ifdef GSUBR_TEST
|
||
scm_make_gsubr("gsubr-2-1-l", 2, 1, 1, gsubr_21l); /* example */
|
||
#endif
|
||
}
|