|
|
1.1 ! root 1: # include "ldefs.c" ! 2: # include "once.c" ! 3: ! 4: /* lex [-[drcyvntf]] [file] ... [file] */ ! 5: ! 6: /* Copyright 1976, Bell Telephone Laboratories, Inc., ! 7: written by Eric Schmidt, August 27, 1976 */ ! 8: ! 9: main(argc,argv) ! 10: int argc; ! 11: char **argv; { ! 12: register int i; ! 13: # ifdef DEBUG ! 14: signal(10,buserr); ! 15: signal(11,segviol); ! 16: # endif ! 17: while (argc > 1 && argv[1][0] == '-' ){ ! 18: i = 0; ! 19: while(argv[1][++i]){ ! 20: switch (argv[1][i]){ ! 21: # ifdef DEBUG ! 22: case 'd': debug++; break; ! 23: case 'y': yydebug = TRUE; break; ! 24: # endif ! 25: case 'r': case 'R': ! 26: warning("Ratfor not currently supported with lex"); ! 27: ratfor=TRUE; break; ! 28: case 'c': case 'C': ! 29: ratfor=FALSE; break; ! 30: case 't': case 'T': ! 31: fout = stdout; ! 32: errorf = stderr; ! 33: break; ! 34: case 'v': case 'V': ! 35: report = 1; ! 36: break; ! 37: case 'n': case 'N': ! 38: report = 0; ! 39: break; ! 40: default: ! 41: warning("Unknown option %c",argv[1][i]); ! 42: } ! 43: } ! 44: argc--; ! 45: argv++; ! 46: } ! 47: sargc = argc; ! 48: sargv = argv; ! 49: if (argc > 1){ ! 50: fin = fopen(argv[++fptr], "r"); /* open argv[1] */ ! 51: sargc--; ! 52: sargv++; ! 53: } ! 54: else fin = stdin; ! 55: if(fin == NULL) ! 56: error ("Can't read input file %s",argc>1?argv[1]:"standard input"); ! 57: gch(); ! 58: /* may be gotten: def, subs, sname, schar, ccl, dchar */ ! 59: get1core(); ! 60: /* may be gotten: name, left, right, nullstr, parent */ ! 61: scopy("INITIAL",sp); ! 62: sname[0] = sp; ! 63: sp += slength("INITIAL") + 1; ! 64: sname[1] = 0; ! 65: if(yyparse(0)) exit(1); /* error return code */ ! 66: /* may be disposed of: def, subs, dchar */ ! 67: free1core(); ! 68: /* may be gotten: tmpstat, foll, positions, gotof, nexts, nchar, state, atable, sfall, cpackflg */ ! 69: get2core(); ! 70: ptail(); ! 71: mkmatch(); ! 72: # ifdef DEBUG ! 73: if(debug) pccl(); ! 74: # endif ! 75: sect = ENDSECTION; ! 76: if(tptr>0)cfoll(tptr-1); ! 77: # ifdef DEBUG ! 78: if(debug)pfoll(); ! 79: # endif ! 80: cgoto(); ! 81: # ifdef DEBUG ! 82: if(debug){ ! 83: printf("Print %d states:\n",stnum+1); ! 84: for(i=0;i<=stnum;i++)stprt(i); ! 85: } ! 86: # endif ! 87: /* may be disposed of: positions, tmpstat, foll, state, name, left, right, parent, ccl, schar, sname */ ! 88: /* may be gotten: verify, advance, stoff */ ! 89: free2core(); ! 90: get3core(); ! 91: layout(); ! 92: /* may be disposed of: verify, advance, stoff, nexts, nchar, ! 93: gotof, atable, ccpackflg, sfall */ ! 94: # ifdef DEBUG ! 95: free3core(); ! 96: # endif ! 97: if (ZCH>NCH) cname="/usr/lib/lex/ebcform"; ! 98: fother = fopen(ratfor?ratname:cname,"r"); ! 99: if(fother == NULL) ! 100: error("Lex driver missing, file %s",ratfor?ratname:cname); ! 101: while ( (i=getc(fother)) != EOF) ! 102: putc(i,fout); ! 103: ! 104: fclose(fother); ! 105: fclose(fout); ! 106: if( ! 107: # ifdef DEBUG ! 108: debug || ! 109: # endif ! 110: report == 1)statistics(); ! 111: fclose(stdout); ! 112: fclose(stderr); ! 113: exit(0); /* success return code */ ! 114: } ! 115: get1core(){ ! 116: register int i, val; ! 117: register char *p; ! 118: ccptr = ccl = myalloc(CCLSIZE,sizeof(*ccl)); ! 119: pcptr = pchar = myalloc(pchlen, sizeof(*pchar)); ! 120: def = (char **)myalloc(DEFSIZE,sizeof(*def)); ! 121: subs = (char **)myalloc(DEFSIZE,sizeof(*subs)); ! 122: dp = dchar = myalloc(DEFCHAR,sizeof(*dchar)); ! 123: sname = (char **)myalloc(STARTSIZE,sizeof(*sname)); ! 124: sp = schar = myalloc(STARTCHAR,sizeof(*schar)); ! 125: if(ccl == 0 || def == 0 || subs == 0 || dchar == 0 || sname == 0 || schar == 0) ! 126: error("Too little core to begin"); ! 127: } ! 128: free1core(){ ! 129: cfree((char *)def,DEFSIZE,sizeof(*def)); ! 130: cfree((char *)subs,DEFSIZE,sizeof(*subs)); ! 131: cfree((char *)dchar,DEFCHAR,sizeof(*dchar)); ! 132: } ! 133: get2core(){ ! 134: register int i, val; ! 135: register char *p; ! 136: gotof = (int *)myalloc(nstates,sizeof(*gotof)); ! 137: nexts = (int *)myalloc(ntrans,sizeof(*nexts)); ! 138: nchar = myalloc(ntrans,sizeof(*nchar)); ! 139: state = (int **)myalloc(nstates,sizeof(*state)); ! 140: atable = (int *)myalloc(nstates,sizeof(*atable)); ! 141: sfall = (int *)myalloc(nstates,sizeof(*sfall)); ! 142: cpackflg = myalloc(nstates,sizeof(*cpackflg)); ! 143: tmpstat = myalloc(tptr+1,sizeof(*tmpstat)); ! 144: foll = (int **)myalloc(tptr+1,sizeof(*foll)); ! 145: nxtpos = positions = (int *)myalloc(maxpos,sizeof(*positions)); ! 146: if(tmpstat == 0 || foll == 0 || positions == 0 || ! 147: gotof == 0 || nexts == 0 || nchar == 0 || state == 0 || atable == 0 || sfall == 0 || cpackflg == 0 ) ! 148: error("Too little core for state generation"); ! 149: for(i=0;i<=tptr;i++)foll[i] = 0; ! 150: } ! 151: free2core(){ ! 152: cfree((char *)positions,maxpos,sizeof(*positions)); ! 153: cfree((char *)tmpstat,tptr+1,sizeof(*tmpstat)); ! 154: cfree((char *)foll,tptr+1,sizeof(*foll)); ! 155: cfree((char *)name,treesize,sizeof(*name)); ! 156: cfree((char *)left,treesize,sizeof(*left)); ! 157: cfree((char *)right,treesize,sizeof(*right)); ! 158: cfree((char *)parent,treesize,sizeof(*parent)); ! 159: cfree((char *)nullstr,treesize,sizeof(*nullstr)); ! 160: cfree((char *)state,nstates,sizeof(*state)); ! 161: cfree((char *)sname,STARTSIZE,sizeof(*sname)); ! 162: cfree((char *)schar,STARTCHAR,sizeof(*schar)); ! 163: cfree((char *)ccl,CCLSIZE,sizeof(*ccl)); ! 164: } ! 165: get3core(){ ! 166: register int i, val; ! 167: register char *p; ! 168: verify = (int *)myalloc(outsize,sizeof(*verify)); ! 169: advance = (int *)myalloc(outsize,sizeof(*advance)); ! 170: stoff = (int *)myalloc(stnum+2,sizeof(*stoff)); ! 171: if(verify == 0 || advance == 0 || stoff == 0) ! 172: error("Too little core for final packing"); ! 173: } ! 174: # ifdef DEBUG ! 175: free3core(){ ! 176: cfree((char *)advance,outsize,sizeof(*advance)); ! 177: cfree((char *)verify,outsize,sizeof(*verify)); ! 178: cfree((char *)stoff,stnum+1,sizeof(*stoff)); ! 179: cfree((char *)gotof,nstates,sizeof(*gotof)); ! 180: cfree((char *)nexts,ntrans,sizeof(*nexts)); ! 181: cfree((char *)nchar,ntrans,sizeof(*nchar)); ! 182: cfree((char *)atable,nstates,sizeof(*atable)); ! 183: cfree((char *)sfall,nstates,sizeof(*sfall)); ! 184: cfree((char *)cpackflg,nstates,sizeof(*cpackflg)); ! 185: } ! 186: # endif ! 187: char *myalloc(a,b) ! 188: int a,b; { ! 189: register int i; ! 190: i = (int)calloc(a, b); ! 191: if(i==0) ! 192: warning("OOPS - calloc returns a 0"); ! 193: else if(i == -1){ ! 194: # ifdef DEBUG ! 195: warning("calloc returns a -1"); ! 196: # endif ! 197: return(0); ! 198: } ! 199: return((char *)i); ! 200: } ! 201: # ifdef DEBUG ! 202: buserr(){ ! 203: fflush(errorf); ! 204: fflush(fout); ! 205: fflush(stdout); ! 206: fprintf(errorf,"Bus error\n"); ! 207: if(report == 1)statistics(); ! 208: fflush(errorf); ! 209: } ! 210: segviol(){ ! 211: fflush(errorf); ! 212: fflush(fout); ! 213: fflush(stdout); ! 214: fprintf(errorf,"Segmentation violation\n"); ! 215: if(report == 1)statistics(); ! 216: fflush(errorf); ! 217: } ! 218: # endif ! 219: ! 220: yyerror(s) ! 221: char *s; ! 222: { ! 223: fprintf(stderr, "line %d: %s\n", yyline, s); ! 224: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.