/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ # include <u.h># include <libc.h># include <ctype.h># include <bio.h># define PP 1 # define CWIDTH 8# define CMASK 0377# define NCH 256  # define TOKENSIZE 1000# define DEFSIZE 40# define DEFCHAR 1000# define STARTCHAR 100# define STARTSIZE 256# define CCLSIZE 1000 # define TREESIZE 1000# define NSTATES 500# define MAXPOS 2500# define NTRANS 2000# define NOUTPUT 5000 # define NACTIONS 100# define ALITTLEEXTRA 30 # define RCCL NCH+90# define RNCCL NCH+91# define RSTR NCH+92# define RSCON NCH+93# define RNEWE NCH+94# define FINAL NCH+95# define RNULLS NCH+96# define RCAT NCH+97# define STAR NCH+98# define PLUS NCH+99# define QUEST NCH+100# define DIV NCH+101# define BAR NCH+102# define CARAT NCH+103# define S1FINAL NCH+104# define S2FINAL NCH+105 # define DEFSECTION 1# define RULESECTION 2# define ENDSECTION 5# define TRUE 1# define FALSE 0 # define PC 1# define PS 1 # ifdef DEBUG# define LINESIZE 110extern int yydebug;extern int debug;		/* 1 = on */extern int charc;# endif # ifdef DEBUGextern int	freturn(int);# else# define freturn(s) s# endif extern int sargc;extern char **sargv;extern uchar buf[520];extern int yyline;		/* line number of file */extern char *yyfile;		/* file name of file */extern int sect;extern int eof;extern int lgatflg;extern int divflg;extern int funcflag;extern int pflag;extern int casecount;extern int chset;	/* 1 = char set modified */extern Biobuf *fin, fout, *fother;extern int foutopen;extern int errorf;extern int fptr;extern char *cname;extern int prev;	/* previous input character */extern int pres;	/* present input character */extern int peek;	/* next input character */extern int *name;extern int *left;extern int *right;extern int *parent;extern uchar **ptr;extern uchar *nullstr;extern int tptr;extern uchar pushc[TOKENSIZE];extern uchar *pushptr;extern uchar slist[STARTSIZE];extern uchar *slptr;extern uchar **def, **subs, *dchar;extern uchar **sname, *stchar;extern uchar *ccl;extern uchar *ccptr;extern uchar *dp, *sp;extern int dptr, sptr;extern uchar *bptr;		/* store input position */extern uchar *tmpstat;extern int count;extern int **foll;extern int *nxtpos;extern int *positions;extern int *gotof;extern int *nexts;extern uchar *nchar;extern int **state;extern int *sfall;		/* fallback state num */extern uchar *cpackflg;		/* true if state has been character packed */extern int *atable, aptr;extern int nptr;extern uchar symbol[NCH];extern uchar cindex[NCH];extern int xstate;extern int stnum;extern int ccount;extern uchar match[NCH];extern uchar extra[NACTIONS];extern uchar *pcptr, *pchar;extern int pchlen;extern int nstates, maxpos;extern int yytop;extern int report;extern int ntrans, treesize, outsize;extern long rcount;extern int *verify, *advance, *stoff;extern int scon;extern uchar *psave; extern void	acompute(int);extern void	add(int **, int);extern void	allprint(int);extern void	cclinter(int);extern void	cgoto(void);extern void	cfoll(int);extern int	cpyact(void);extern int	dupl(int);extern void	error(char *,...);extern void	first(int);extern void	follow(int);extern int	gch(void);extern uchar	*getl(uchar *);extern void	layout(void);extern void	lgate(void);extern int	lookup(uchar *, uchar **);extern int	member(int, uchar *);extern void	mkmatch(void);extern int	mn0(int);extern int	mn1(int, int);extern int	mnp(int, void*);extern int	mn2(int, int, uintptr);extern void	munputc(int);extern void	munputs(uchar *);extern void	*myalloc(int, int);extern void	nextstate(int, int);extern int	notin(int);extern void	packtrans(int, uchar *, int *, int, int);extern void	padd(int **, int);extern void	pccl(void);extern void	pfoll(void);extern void	phead1(void);extern void	phead2(void);extern void	pstate(int);extern void	ptail(void);extern void	sect1dump(void);extern void	sect2dump(void);extern void	statistics(void);extern void	stprt(int);extern void	strpt(uchar *);extern void	treedump(void);extern int	usescape(int);extern void	warning(char *,...);extern int	yyparse(void);extern void	yyerror(char *);