mdw@git.distorted.org.uk Git - catacomb-perl/blob - pgproc.c

   1 /* -*-c-*-
   2  *
   3  * $Id$
   4  *
   5  * Prime generation procedures
   6  *
   7  * (c) 2001 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of the Perl interface to Catacomb.
  13  *
  14  * Catacomb/Perl is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * Catacomb/Perl is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with Catacomb/Perl; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Header files ------------------------------------------------------*/
  30
  31 #include "catacomb-perl.h"
  32
  33 /*----- Main code ---------------------------------------------------------*/
  34
  35 static int perlevent(int rq, pgen_event *e, void *p)
  36 {
  37   char *meth = 0;
  38   int n;
  39   SV *sv = p;
  40   int rc;
  41   dSP;
  42
  43   switch (rq) {
  44     case PGEN_BEGIN:    meth = "PG_BEGIN"; break;
  45     case PGEN_TRY:      meth = "PG_TRY"; break;
  46     case PGEN_FAIL:     meth = "PG_FAIL"; break;
  47     case PGEN_PASS:     meth = "PG_PASS"; break;
  48     case PGEN_DONE:     meth = "PG_DONE"; break;
  49     case PGEN_ABORT:    meth = "PG_ABORT"; break;
  50     default:
  51       abort();
  52   }
  53
  54   ENTER;
  55   SAVETMPS;
  56   PUSHMARK(SP);
  57   XPUSHs(sv);
  58   XPUSHs(RET(e, "Catacomb::MP::Prime::Gen::Event"));
  59   PUTBACK;
  60   n = perl_call_method(meth, G_SCALAR);
  61   assert(n == 1);
  62   SPAGAIN;
  63   rc = POPi;
  64   PUTBACK;
  65   FREETMPS;
  66   LEAVE;
  67   return (rc);
  68 }
  69
  70 void pgproc_get(SV *sv, pgen_proc **p, void **ctx)
  71 {
  72   if (!SvOK(sv)) {
  73     *p = 0;
  74     *ctx = 0;
  75   } else if (sv_derived_from(sv, "Catacomb::MP::Prime::Gen::MagicProc")) {
  76     MP_Prime_Gen_MagicProc *mg =
  77       (MP_Prime_Gen_MagicProc *)SvIV((SV *)SvRV(sv));
  78     *p = mg->p;
  79     *ctx = mg->ctx;
  80   } else {
  81     *p = perlevent;
  82     *ctx = sv;
  83   }
  84 }
  85
  86 /*----- That's all, folks -------------------------------------------------*/