ee9b97222a
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1419 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
688 lines
16 KiB
C
688 lines
16 KiB
C
/*************************************************************************
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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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#if (DefTrailSpace < MinTrailSpace)
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#undef DefTrailSpace
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#define DefTrailSpace MinTrailSpace
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#endif
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#if (DefStackSpace < MinStackSpace)
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#undef DefStackSpace
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#define DefStackSpace MinStackSpace
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#endif
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#if (DefHeapSpace < MinHeapSpace)
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#undef DefHeapSpace
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#define DefHeapSpace MinHeapSpace
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#endif
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#define DEFAULT_NUMBERWORKERS 1
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#define DEFAULT_SCHEDULERLOOP 10
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#define DEFAULT_DELAYEDRELEASELOAD 3
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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_STRING_H
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#include <string.h>
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#endif
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static int PROTO(mygetc, (void));
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static void PROTO(do_bootfile, (char *));
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static void PROTO(do_top_goal,(YAP_Term));
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static void PROTO(exec_top_level,(int, YAP_init_args *));
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#ifndef LIGHT
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void PROTO (exit, (int));
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#endif
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#ifdef LIGHT
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#include <unix.h>
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int
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_main (int, char **);
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#else
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int PROTO (main, (int, char **));
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#endif
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#ifdef DEBUG
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static int output_msg;
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#endif
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static char BootFile[] = "boot.yap";
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static char InitFile[] = "init.yap";
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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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static FILE *bootfile;
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static int eof_found = FALSE;
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static int yap_lineno = 0;
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/* nf: Begin preprocessor code */
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#define MAXDEFS 100
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static char *def_var[MAXDEFS];
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static char *def_value[MAXDEFS];
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static int def_c=0;
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/* End preprocessor code */
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#if 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 int
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mygetc (void)
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{
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int ch;
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if (eof_found)
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return (EOF);
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ch = getc (bootfile);
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if (ch == EOF)
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eof_found = TRUE;
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if (ch == '\n') {
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#ifdef MPW
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ch = 10;
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#endif
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yap_lineno++;
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}
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return (ch);
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}
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static void
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do_top_goal (YAP_Term Goal)
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{
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#ifdef DEBUG
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if (output_msg)
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fprintf(stderr,"Entering absmi\n");
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#endif
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/* PlPutc(0,'a'); PlPutc(0,'\n'); */
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YAP_RunGoal(Goal);
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}
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/* do initial boot by consulting the file boot.yap */
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static void
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do_bootfile (char *bootfilename)
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{
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YAP_Term t;
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YAP_Term term_nil = YAP_MkAtomTerm(YAP_LookupAtom("[]"));
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YAP_Term term_end_of_file = YAP_MkAtomTerm(YAP_LookupAtom("end_of_file"));
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YAP_Term term_true = YAP_MkAtomTerm(YAP_LookupAtom("true"));
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YAP_Functor functor_query = YAP_MkFunctor(YAP_LookupAtom("?-"),1);
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/* consult boot.pl */
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bootfile = fopen (bootfilename, "r");
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if (bootfile == NULL)
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{
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fprintf(stderr, "[ FATAL ERROR: could not open bootfile %s ]\n", bootfilename);
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exit(1);
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}
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/* the consult mode does not matter here, really */
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/*
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To be honest, YAP_InitConsult does not really do much,
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it's here for the future. It also makes what we want to do clearer.
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*/
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YAP_InitConsult(YAP_CONSULT_MODE,bootfilename);
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while (!eof_found)
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{
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t = YAP_Read(mygetc);
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if (eof_found) {
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break;
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}
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if (t == 0)
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{
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fprintf(stderr, "[ SYNTAX ERROR: while parsing bootfile %s at line %d ]\n", bootfilename, yap_lineno);
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exit(1);
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}
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if (YAP_IsVarTerm (t) || t == term_nil)
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{
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continue;
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}
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else if (t == term_true)
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{
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YAP_Exit(0);
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}
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else if (t == term_end_of_file)
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{
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break;
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}
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else if (YAP_IsPairTerm (t))
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{
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fprintf(stderr, "[ SYSTEM ERROR: consult not allowed in boot file ]\n");
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fprintf(stderr, "error found at line %d and pos %d", yap_lineno, fseek(bootfile,0L,SEEK_CUR));
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}
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else if (YAP_IsApplTerm (t) && YAP_FunctorOfTerm (t) == functor_query)
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{
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do_top_goal(YAP_ArgOfTerm (1, t));
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}
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else
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{
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char *ErrorMessage = YAP_CompileClause(t);
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if (ErrorMessage)
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fprintf(stderr, ErrorMessage);
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}
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/* do backtrack */
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YAP_Reset();
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}
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YAP_EndConsult();
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fclose (bootfile);
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#ifdef DEBUG
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if (output_msg)
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fprintf(stderr,"Boot loaded\n");
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#endif
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}
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static void
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print_usage(void)
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{
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fprintf(stderr,"\n[ Valid switches for command line arguments: ]\n");
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fprintf(stderr," -? Shows this screen\n");
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fprintf(stderr," -b Boot file \n");
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fprintf(stderr," -g Run Goal Before Top-Level \n");
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fprintf(stderr," -z Run Goal Before Top-Level \n");
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fprintf(stderr," -l load Prolog file\n");
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fprintf(stderr," -L run Prolog file and exit\n");
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fprintf(stderr," -p extra path for file-search-path\n");
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fprintf(stderr," -h Heap area in Kbytes (default: %d, minimum: %d)\n",
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DefHeapSpace, MinHeapSpace);
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fprintf(stderr," -s Stack area in Kbytes (default: %d, minimum: %d)\n",
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DefStackSpace, MinStackSpace);
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fprintf(stderr," -t Trail area in Kbytes (default: %d, minimum: %d)\n",
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DefTrailSpace, MinTrailSpace);
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#ifdef TABLING
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fprintf(stderr," -ts Maximum table space area in Mbytes (default: unlimited)\n");
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#endif /* TABLING */
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#ifdef YAPOR
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fprintf(stderr," -w Number of workers (default: %d)\n",
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DEFAULT_NUMBERWORKERS);
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fprintf(stderr," -sl Loop scheduler executions before look for hiden shared work (default: %d)\n",
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DEFAULT_SCHEDULERLOOP);
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fprintf(stderr," -d Value of delayed release of load (default: %d)\n",
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DEFAULT_DELAYEDRELEASELOAD);
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/* nf: Preprocessor */
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fprintf(stderr," -DVar=Name : persistent definition\n");
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#endif /* YAPOR */
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fprintf(stderr,"\n");
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}
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/*
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* proccess command line arguments: valid switches are: -b boot -s
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* stack area size (K) -h heap area size -a aux stack size -e
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* emacs_mode -m -DVar=Value reserved memory for alloc IF DEBUG -p if you
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* want to check out startup IF MAC -mpw if we are using the mpw
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* shell
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*/
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static int
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parse_yap_arguments(int argc, char *argv[], YAP_init_args *iap)
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{
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char *p;
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#if USE_SYSTEM_MALLOC
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int BootMode = YAP_FULL_BOOT_FROM_PROLOG;
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#else
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int BootMode = YAP_BOOT_FROM_SAVED_CODE;
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#endif
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int *ssize;
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while (--argc > 0)
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{
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p = *++argv;
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if (*p == '-')
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switch (*++p)
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{
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case 'b':
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BootMode = YAP_BOOT_FROM_PROLOG;
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iap->YapPrologBootFile = *++argv;
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argc--;
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break;
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case '?':
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print_usage();
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exit(EXIT_SUCCESS);
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case 'w':
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ssize = &(iap->NumberWorkers);
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goto GetSize;
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case 'd':
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ssize = &(iap->DelayedReleaseLoad);
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goto GetSize;
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#ifdef USE_SOCKET
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case 'c': /* running as client */
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{
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char *host, *p1;
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long port;
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char *ptr;
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host = *++argv;
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argc--;
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if (host == NULL || host[0] == '-')
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YAP_Error(0,0L,"sockets must receive host to connect to");
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p1 = *++argv;
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argc--;
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if (p1 == NULL || p1[0] == '-')
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YAP_Error(0,0L,"sockets must receive port to connect to");
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port = strtol(p1, &ptr, 10);
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if (ptr == NULL || ptr[0] != '\0')
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YAP_Error(0,0L,"port argument to socket must be a number");
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YAP_InitSocks(host,port);
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}
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break;
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#endif
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#ifdef EMACS
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case 'e':
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emacs_mode = TRUE;
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{
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File fd;
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strcpy (emacs_tmp, ++p);
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if ((fd = fopen (emacs_tmp, "w")) == NIL)
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fprintf(stderr, "[ Warning: unable to communicate with emacs: failed to open %s ]\n", emacs_tmp);
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fclose (fd);
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unlink (emacs_tmp);
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p = *++argv;
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--argc;
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strcpy (emacs_tmp2, p);
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if ((fd = fopen (emacs_tmp2, "w")) == NIL)
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fprintf(stderr, "Unable to communicate with emacs: failed to open %s\n", emacs_tmp2);
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fclose (fd);
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unlink (emacs_tmp2);
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}
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break;
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#endif /* EMACS */
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case 'f':
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iap->FastBoot = TRUE;
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break;
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#ifdef MPWSHELL
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case 'm':
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if (*++p == 'p' && *++p == 'w' && *++p == '\0')
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mpwshell = TRUE;
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break;
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#endif
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case 's':
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case 'S':
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ssize = &(iap->StackSize);
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if (p[1] == 'l') {
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p++;
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ssize = &(iap->SchedulerLoop);
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}
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goto GetSize;
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case 'h':
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case 'H':
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ssize = &(iap->HeapSize);
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goto GetSize;
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case 't':
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case 'T':
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ssize = &(iap->TrailSize);
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if (p[1] == 's') {
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p++;
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ssize = &(iap->MaxTableSpaceSize);
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}
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GetSize:
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if (*++p == '\0')
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{
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if (argc > 1)
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--argc, p = *++argv;
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else
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{
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fprintf(stderr,"[ YAP unrecoverable error: missing size in flag %s ]", argv[0]);
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print_usage();
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exit(EXIT_FAILURE);
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}
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}
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{
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int i = 0, ch;
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while ((ch = *p++) >= '0' && ch <= '9')
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i = i * 10 + ch - '0';
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if (ch)
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{
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fprintf(stderr,"[ YAP unrecoverable error: illegal size specification %s ]", argv[-1]);
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YAP_Exit(1);
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}
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*ssize = i;
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}
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break;
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#ifdef DEBUG
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case 'P':
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YAP_SetOutputMessage();
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output_msg = TRUE;
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break;
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#endif
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case 'L':
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p++;
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iap->HaltAfterConsult = TRUE;
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if (*p != '\0') {
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iap->YapPrologRCFile = p;
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break;
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} else {
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if (--argc == 0) {
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fprintf(stderr,
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" [ YAP unrecoverable error: missing file name with option 'L' ]\n");
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exit(1);
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}
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p = *++argv;
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if (p[0] == '-' && p[1] == '-' && p[2] == '\0') {
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if (--argc == 0) {
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fprintf(stderr,
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" [ YAP unrecoverable error: missing filename with option 'L' ]\n");
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exit(1);
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}
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p = *++argv;
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iap->YapPrologRCFile = p;
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argc = 1;
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} else {
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iap->YapPrologRCFile = p;
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}
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}
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break;
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case 'l':
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if ((*argv)[0] == '\0')
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iap->YapPrologRCFile = *argv;
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else {
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argc--;
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if (argc == 0) {
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fprintf(stderr," [ YAP unrecoverable error: missing file name with option 'l' ]\n");
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exit(EXIT_FAILURE);
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}
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argv++;
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iap->YapPrologRCFile = *argv;
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}
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break;
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/* run goal before top-level */
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case 'g':
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if ((*argv)[0] == '\0')
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iap->YapPrologGoal = *argv;
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else {
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argc--;
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if (argc == 0) {
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fprintf(stderr," [ YAP unrecoverable error: missing initialization goal for option 'g' ]\n");
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exit(EXIT_FAILURE);
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}
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argv++;
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iap->YapPrologGoal = *argv;
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}
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break;
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/* run goal as top-level */
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case 'z':
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if ((*argv)[0] == '\0')
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iap->YapPrologTopLevelGoal = *argv;
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else {
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argc--;
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if (argc == 0) {
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fprintf(stderr," [ YAP unrecoverable error: missing goal for option 'z' ]\n");
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exit(EXIT_FAILURE);
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}
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argv++;
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iap->YapPrologTopLevelGoal = *argv;
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}
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break;
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case 'p':
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if ((*argv)[0] == '\0')
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iap->YapPrologAddPath = *argv;
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else {
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argc--;
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if (argc == 0) {
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fprintf(stderr," [ YAP unrecoverable error: missing paths for option 'p' ]\n");
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exit(EXIT_FAILURE);
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}
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argv++;
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iap->YapPrologAddPath = *argv;
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}
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break;
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/* nf: Begin preprocessor code */
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case 'D':
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{
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char *var, *value;
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++p;
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var = p;
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if (var == NULL || *var=='\0')
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break;
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while(*p!='=' && *p!='\0') ++p;
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if ( *p=='\0' ) break;
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*p='\0';
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++p;
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value=p;
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if ( *value == '\0' ) break;
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//
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++def_c;
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def_var[def_c-1]=var;
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def_value[def_c-1]=value;
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//printf("var=value--->%s=%s\n",var,value);
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break;
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}
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/* End preprocessor code */
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case '-':
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/* skip remaining arguments */
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argc = 1;
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break;
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default:
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{
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fprintf(stderr,"[ YAP unrecoverable error: unknown switch -%c ]\n", *p);
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print_usage();
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exit(EXIT_FAILURE);
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}
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}
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else {
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iap->SavedState = p;
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}
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}
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return(BootMode);
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}
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static char boot_file[256];
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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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iap->SavedState = NULL;
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iap->HeapSize = 0;
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iap->StackSize = 0;
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iap->TrailSize = 0;
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iap->YapLibDir = NULL;
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iap->YapPrologBootFile = NULL;
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iap->YapPrologInitFile = NULL;
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iap->YapPrologRCFile = NULL;
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iap->YapPrologGoal = NULL;
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iap->YapPrologTopLevelGoal = NULL;
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iap->YapPrologAddPath = NULL;
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iap->HaltAfterConsult = FALSE;
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iap->FastBoot = FALSE;
|
|
iap->MaxTableSpaceSize = 0;
|
|
iap->NumberWorkers = DEFAULT_NUMBERWORKERS;
|
|
iap->SchedulerLoop = DEFAULT_SCHEDULERLOOP;
|
|
iap->DelayedReleaseLoad = DEFAULT_DELAYEDRELEASELOAD;
|
|
iap->PrologShouldHandleInterrupts = TRUE;
|
|
iap->Argc = argc;
|
|
iap->Argv = argv;
|
|
iap->ErrorNo = 0;
|
|
iap->ErrorCause = NULL;
|
|
|
|
BootMode = parse_yap_arguments(argc,argv,iap);
|
|
|
|
if (BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
|
|
#if HAVE_STRNCAT
|
|
strncpy(boot_file, PL_SRC_DIR, 256);
|
|
#else
|
|
strcpy(boot_file, PL_SRC_DIR);
|
|
#endif
|
|
#if HAVE_STRNCAT
|
|
strncat(boot_file, BootFile, 256);
|
|
#else
|
|
strcat(boot_file, BootFile);
|
|
#endif
|
|
iap->YapPrologBootFile = boot_file;
|
|
}
|
|
/* init memory */
|
|
if (BootMode == YAP_BOOT_FROM_PROLOG ||
|
|
BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
int NewBootMode = YAP_Init(iap);
|
|
if (NewBootMode != YAP_BOOT_FROM_PROLOG && BootMode != YAP_FULL_BOOT_FROM_PROLOG)
|
|
BootMode = NewBootMode;
|
|
} else {
|
|
BootMode = YAP_Init(iap);
|
|
}
|
|
if (iap->ErrorNo) {
|
|
/* boot failed */
|
|
YAP_Error(iap->ErrorNo,0L,iap->ErrorCause);
|
|
}
|
|
return BootMode;
|
|
}
|
|
|
|
|
|
static void
|
|
exec_top_level(int BootMode, YAP_init_args *iap)
|
|
{
|
|
YAP_Term atomfalse;
|
|
YAP_Atom livegoal;
|
|
|
|
if (BootMode == YAP_BOOT_FROM_SAVED_STACKS)
|
|
{
|
|
/* continue executing from the frozen stacks */
|
|
YAP_ContinueGoal();
|
|
}
|
|
else if (BootMode == YAP_BOOT_FROM_PROLOG ||
|
|
BootMode == YAP_FULL_BOOT_FROM_PROLOG)
|
|
{
|
|
YAP_Atom livegoal;
|
|
/* read the bootfile */
|
|
do_bootfile (iap->YapPrologBootFile ? iap->YapPrologBootFile : BootFile);
|
|
livegoal = YAP_FullLookupAtom("$live");
|
|
/* initialise the top-level */
|
|
if (BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
char init_file[256];
|
|
YAP_Atom atfile;
|
|
YAP_Functor fgoal;
|
|
YAP_Term goal, as[2];
|
|
|
|
#if HAVE_STRNCAT
|
|
strncpy(init_file, PL_SRC_DIR, 256);
|
|
#else
|
|
strcpy(init_file, PL_SRC_DIR);
|
|
#endif
|
|
#if HAVE_STRNCAT
|
|
strncat(init_file, InitFile, 256);
|
|
#else
|
|
strcat(init_file, InitFile);
|
|
#endif
|
|
/* consult init file */
|
|
atfile = YAP_LookupAtom(init_file);
|
|
as[0] = YAP_MkAtomTerm(atfile);
|
|
fgoal = YAP_MkFunctor(YAP_FullLookupAtom("$silent_bootstrap"), 1);
|
|
goal = YAP_MkApplTerm(fgoal, 1, as);
|
|
/* launch consult */
|
|
YAP_RunGoal(goal);
|
|
/* set default module to user */
|
|
as[0] = YAP_MkAtomTerm(YAP_LookupAtom("user"));
|
|
fgoal = YAP_MkFunctor(YAP_FullLookupAtom("module"), 1);
|
|
goal = YAP_MkApplTerm(fgoal, 1, as);
|
|
YAP_RunGoal(goal);
|
|
}
|
|
YAP_PutValue(livegoal, YAP_MkAtomTerm (YAP_FullLookupAtom("$true")));
|
|
|
|
}
|
|
/* the top-level is now ready */
|
|
|
|
/* read it before case someone, that is, Ashwin, hides
|
|
the atom false away ;-).
|
|
*/
|
|
livegoal = YAP_FullLookupAtom("$live");
|
|
atomfalse = YAP_MkAtomTerm (YAP_FullLookupAtom("$false"));
|
|
while (YAP_GetValue (livegoal) != atomfalse) {
|
|
YAP_Reset();
|
|
do_top_goal (YAP_MkAtomTerm (livegoal));
|
|
}
|
|
YAP_Exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
#ifdef LIGHT
|
|
int
|
|
_main (int argc, char **argv)
|
|
#else
|
|
int
|
|
main (int argc, char **argv)
|
|
#endif
|
|
{
|
|
int BootMode;
|
|
YAP_init_args init_args;
|
|
int i;
|
|
|
|
BootMode = init_standard_system(argc, argv, &init_args);
|
|
if (BootMode == YAP_BOOT_ERROR) {
|
|
fprintf(stderr,"[ FATAL ERROR: could not find saved state ]\n");
|
|
exit(1);
|
|
}
|
|
/* Begin preprocessor code */
|
|
{
|
|
// load the module
|
|
YAP_Term mod_arg[1];
|
|
mod_arg[0] = YAP_MkAtomTerm(YAP_LookupAtom("ypp"));
|
|
YAP_RunGoal(YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("use_module"),1), 1, mod_arg));
|
|
// process the definitions
|
|
for(i=0;i<def_c;++i) {
|
|
YAP_Term t_args[2],t_goal;
|
|
t_args[0] = YAP_MkAtomTerm(YAP_LookupAtom(def_var[i]));
|
|
t_args[1] = YAP_MkAtomTerm(YAP_LookupAtom(def_value[i]));
|
|
t_goal = YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("ypp_define"),2), 2, t_args);
|
|
YAP_RunGoal(t_goal);
|
|
}
|
|
}
|
|
YAP_ClearExceptions();
|
|
/* End preprocessor code */
|
|
|
|
exec_top_level(BootMode, &init_args);
|
|
|
|
return(0);
|
|
}
|
|
|