/* $Header: /home/ncvs/src/sys/netiso/xebec/llparse.h,v 1.1.1.1 1994/05/24 10:07:50 rgrimes Exp $ */ /* $Source: /home/ncvs/src/sys/netiso/xebec/llparse.h,v $ */ /************************************************************ attributes stack garbage ************************************************************/ #define LLMAXATTR 512 #define LLMAXDESC 256 #define LLATTR /* build an attribute stack */ /* ** attribute stack ** ** AttrStack = stack of record ** values : array of values; ** ptr : index; ** end; ** */ typedef union llattrib LLattrib; extern LLattrib llattributes[LLMAXATTR]; extern int llattrtop; extern struct llattr { LLattrib *llabase; /* ptr into the attr stack (llattributes) */ int llaindex;/* # attrs on the stack so far for this prod */ int llacnt;/* total # ever to go on for this prod */ int lloldtop;/* when popping this prod, restore stack to here ; one attr will remain on the stack (for the lhs) */ } llattrdesc[LLMAXDESC]; extern int lldescindex; /************************************************************ attributes stack garbage ************************************************************/ extern struct lltoken { short llterm; /* token number */ short llstate; /* inserted deleted normal */ LLattrib llattrib; } lltoken; typedef struct lltoken LLtoken; /************************************************************ constants used in llparse.c ************************************************************/ #define STACKSIZE 500 #define MAXCORR 16 #define NORMAL 0 #define DELETE 1 #define INSERT 2 /************************************************************ datatypes used to communicate with the parser ************************************************************/ struct llinsert { short llinscost; short llinslength; short llinsert[MAXCORR]; }; typedef struct llinsert LLinsert; extern short llparsestack[]; extern short llstackptr; extern short llinfinite; /************************************************************ variables used to pass information specific to each grammer ************************************************************/ extern short llnterms; extern short llnsyms; extern short llnprods; extern char *llefile; extern struct llparsetable { short llterm; short llprod; } llparsetable[]; extern short llparseindex[]; extern short llepsilon[]; extern short llproductions[]; extern struct llprodindex { short llprodstart; short llprodlength; short llprodtlen; } llprodindex[]; extern struct llcosts { short llinsert; short lldelete; } llcosts[]; extern struct llstable { short llsstart; short llslength; } llstable[]; extern short llsspace[]; extern struct lletable { short llecost; short llelength; short llestart; } lletable[]; extern long lleindex[]; extern short llespace[]; extern char *llstrings[]; /************************************************************ routines defined in llparse.c ************************************************************/ extern llparse(); extern llcopye(); extern llcopys(); extern llcorrector(); extern llepsilonok(); extern llexpand(); extern short llfindaction(); extern llgetprefix(); extern llgettoken(); extern llinsert(); extern llinsertsym(); extern llinserttokens(); extern llparsererror(); extern llpushprod(); extern llreadetab();