175 lines
3.8 KiB
C
Executable File
175 lines
3.8 KiB
C
Executable File
/*************************************************************************
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* *
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* Yap Prolog *
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* *
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* Yap Prolog Was Developed At Nccup - Universidade Do Porto *
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* *
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* Copyright L.Damas, V.S.Costa And Universidade Do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: Yap.C *
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* Last Rev: *
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* Mods: *
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* Comments: Yap's Main File *
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* *
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*************************************************************************/
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/* static char SccsId[] = "X 4.3.3"; */
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#include "config.h"
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#include "YapInterface.h"
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#include "cut_c.h"
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#ifdef _MSC_VER /* Microsoft's Visual C++ Compiler */
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#ifdef HAVE_UNISTD_H
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#undef HAVE_UNISTD_H
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#endif
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#endif
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#include <stdio.h>
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#if HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#if HAVE_STDARG_H
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#include <stdarg.h>
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#endif
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#if HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#if HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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static void do_top_goal(YAP_Term Goal);
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static void exec_top_level(int BootMode, YAP_init_args *iap);
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#ifdef lint
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/* VARARGS1 */
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#endif
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#ifdef M_WILLIAMS
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long _stksize = 32000;
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#endif
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#ifdef USE_MYPUTC
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static void
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myputc (int ch)
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{
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putc(ch,stderr);
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}
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#endif
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static void
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do_top_goal (YAP_Term Goal)
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{
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YAP_RunGoalOnce(Goal);
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}
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static int
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init_standard_system(int argc, char *argv[], YAP_init_args *iap)
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{
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int BootMode;
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BootMode = YAP_parse_yap_arguments(argc,argv,iap);
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/* init memory */
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if (BootMode == YAP_BOOT_FROM_PROLOG ||
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BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
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int NewBootMode = YAP_Init(iap);
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if (NewBootMode != YAP_BOOT_FROM_PROLOG && BootMode != YAP_FULL_BOOT_FROM_PROLOG)
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BootMode = NewBootMode;
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} else {
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BootMode = YAP_Init(iap);
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}
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if (iap->ErrorNo) {
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/* boot failed */
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YAP_Error(iap->ErrorNo,0L,iap->ErrorCause);
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}
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return BootMode;
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}
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static void
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exec_top_level(int BootMode, YAP_init_args *iap)
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{
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YAP_Term atomfalse;
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YAP_Atom livegoal;
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if (BootMode == YAP_BOOT_FROM_SAVED_STACKS)
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{
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/* continue executing from the frozen stacks */
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YAP_ContinueGoal();
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}
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/* the top-level is now ready */
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/* read it before case someone, that is, Ashwin, hides
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the atom false away ;-).
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*/
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livegoal = YAP_FullLookupAtom("$live");
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atomfalse = YAP_MkAtomTerm (YAP_FullLookupAtom("$false"));
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while (YAP_GetValue (livegoal) != atomfalse) {
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YAP_Reset();
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do_top_goal (YAP_MkAtomTerm (livegoal));
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}
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YAP_Exit(EXIT_SUCCESS);
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}
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#ifdef LIGHT
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int
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_main (int argc, char **argv)
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#else
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int
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main (int argc, char **argv)
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#endif
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{
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int BootMode;
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YAP_init_args init_args;
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int i;
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BootMode = init_standard_system(argc, argv, &init_args);
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if (BootMode == YAP_BOOT_ERROR) {
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fprintf(stderr,"[ FATAL ERROR: could not find saved state ]\n");
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exit(1);
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}
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/* Begin preprocessor code */
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if (BootMode != YAP_BOOT_FROM_SAVED_STACKS) {
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// load the module
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YAP_Term mod_arg[1];
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mod_arg[0] = YAP_MkAtomTerm(YAP_LookupAtom("ypp"));
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YAP_RunGoalOnce(YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("use_module"),1), 1, mod_arg));
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// process the definitions
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for(i=0;i<init_args.def_c;++i) {
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YAP_Term t_args[2],t_goal;
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t_args[0] = YAP_MkAtomTerm(YAP_LookupAtom(init_args.def_var[i]));
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t_args[1] = YAP_MkAtomTerm(YAP_LookupAtom(init_args.def_value[i]));
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t_goal = YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("ypp_define"),2), 2, t_args);
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YAP_RunGoalOnce(t_goal);
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}
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}
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YAP_Reset();
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/* End preprocessor code */
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exec_top_level(BootMode, &init_args);
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return(0);
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}
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