/* Copyright (C) 1995,1996,1997,1998, 1999, 2000, 2001 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. */ #include #include "libguile/_scm.h" #include "libguile/procprop.h" #include "libguile/root.h" #include "libguile/gsubr.h" #include "libguile/deprecation.h" /* * 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_MAKINUM (SCM_GSUBR_MAKTYPE (req, opt, rst))); #ifdef DEBUG_EXTENSIONS if (SCM_REC_PROCNAMES_P) scm_set_procedure_property_x (cclo, scm_sym_name, sym); #endif 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]; long typ = SCM_INUM (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_MAKINUM (n))); #endif args = SCM_CDR (args); for (i = 0; i < SCM_GSUBR_REQ (typ); i++) { #ifndef SCM_RECKLESS if (SCM_NULLP (args)) 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 if (!SCM_NULLP (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" } #if SCM_DEBUG_DEPRECATED == 0 SCM scm_make_gsubr (const char *name, int req, int opt, int rst, SCM (*fcn)()) { scm_c_issue_deprecation_warning ("`scm_make_gsubr' is deprecated. Use `scm_c_define_gsubr' instead."); return scm_c_define_gsubr (name, req, opt, rst, fcn); } SCM scm_make_gsubr_with_generic (const char *name, int req, int opt, int rst, SCM (*fcn)(), SCM *gf) { scm_c_issue_deprecation_warning ("`scm_make_gsubr_with_generic' is deprecated. " "Use `scm_c_define_gsubr_with_generic' instead."); return scm_c_define_gsubr_with_generic (name, req, opt, rst, fcn, gf); } #endif /* !SCM_DEBUG_DEPRECATED */ /* Local Variables: c-file-style: "gnu" End: */