# /* MANIFEST CONSTANT DEFINITIONS */ # define NTBASE 010000 /* internal codes for error and accept actions */ # define ERRCODE 8190 # define ACCEPTCODE 8191 # define errfileno 1 /* file number for erros and reduction message */ # define _tbitset 6 /* 16*_tbitset - 1 >= _nterms */ extern int tbitset; /* number of wds of lookahead vector */ extern int nolook; /* flag to turn off lookahed computations */ struct looksets { int lset[ _tbitset ]; } ; struct item { int *pitem; struct looksets *look; } ; /* output actions */ # define ERRACT 0 # define TESTACT 4096 # define SHIFTACT 8192 # define REDUCACT 12288 # define ACCEPTACT 16384 # define _REGISTER register extern int nstate ; /* number of states */ extern struct item *pstate[]; /* pointers to the descriptions of the states */ extern int apstate[]; /* index to actions in amem by state */ extern int actsiz; /* size of the action table array */ extern int tystate[]; /* contains type information about the states */ /* 0 = simple state, completely generated 1 = state awaiting generation 2 = state with an empty production in closure */ extern int stsize ; /* maximum number of states, at present */ extern int memsiz ; /* maximum size for productions and states */ extern int mem0[] ; /* added production */ extern int *mem ; extern int amem[]; /* action table storage */ extern int actsiz; /* action table size */ extern int memact ; /* next free action table position */ extern int nprod ; /* number of productions */ extern int *prdptr[]; /* pointers to descriptions of productions */ extern int prdlim; /* the number of productions allowed */ extern int levprd[] ; /* contains production levels to break conflicts */ /* last two bits code associativity: 0 = no definition 1 = left associative 2 = binary 3 = right associative bit 04 is 1 if the production has an action the high 13 bits have the production level */ extern int nterms ; /* number of terminals */ extern int nerrors; /* number of errors */ extern int fatfl; /* if on, error is fatal */ /* the ascii representations of the terminals */ extern int extval; /* start of output values */ extern struct sxxx1 {char *name; int value;} trmset[]; extern char cnames[]; extern int cnamsz; extern char *cnamp; extern int maxtmp ; /* the size of the temp arrays */ /* temporary vectors, indexable by states, terms, or nterms */ extern int temp1[]; extern int temp2[]; extern int trmlev[]; /* vector with the precedence of the terminals */ /* The levels are the same as for levprd, but bit 04 is always 0 */ /* the ascii representations of the nonterminals */ extern struct sxxx2 { char *name; } nontrst[]; extern int indgo[]; /* index to the stored goto table */ extern int ***pres; /* vector of pointers to the productions yielding each nonterminal */ extern struct looksets **pfirst; /* vector of pointers to first sets for each nonterminal */ extern int *pempty ; /* table of nonterminals nontrivially deriving e */ extern int nnonter ; /* the number of nonterminals */ extern int lastred ; /* the number of the last reduction of a state */ extern int ftable; /* y.tab.c file */ extern int Foutput; /* y.output file */ extern int cin; /* current input file */ extern int cout; /* current output file */ extern int arrndx; extern int zzcwset; extern int zzpairs ; extern int zzgoent ; extern int zzgobest ; extern int zzacent ; extern int zzacsave ; extern int zznsave ; extern int zzclose ; extern int zzrrconf ; extern int zzsrconf ; extern char *ctokn; struct {int **ppi;} ; extern int ntlim ; /* maximum number of nonterminals */ extern int tlim ; /* maximum number of terminals */ extern int lineno; /* current line number */ extern int peekc; /* look-ahead character */ extern int tstates[]; extern int ntstates[]; extern int mstates[]; extern struct looksets clset; extern struct looksets lkst[]; extern int nlset; /* next lookahead set index */ extern int lsetsz; /* number of lookahead sets */ extern struct wset { int *pitem, flag, ws[ _tbitset ]; } wsets[]; extern int cwset; extern int wssize; extern int numbval; /* the value of an input number */ extern int rflag; /* ratfor flag */ extern int sflag; /* suppress crap output flag */ extern int oflag; /* optimization flag */ extern int ndeFout; /* number of defined symbols output */ extern int machine; # define UNIX 1 # define GCOS 2 # define IBM 3