87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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/*
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* L L G E N
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*
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* An Extended LL(1) Parser Generator
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*
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* Author : Ceriel J.H. Jacobs
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*/
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/*
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* extern.h $Header$
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* Miscellanious constants and
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* some variables that are visible in more than one file
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*/
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/*
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* options for the identifier search routine
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*/
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# define JUSTLOOKING 0
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# define ENTERING 1
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# define BOTH 2
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/*
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* Now for some declarations
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*/
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extern char ltext[]; /* input buffer */
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extern int nnonterms; /* number of nonterminals */
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extern int nterminals; /* number of terminals */
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extern p_start start; /* will contain startsymbols */
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extern int linecount; /* line number */
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extern int assval; /* to create difference between literals
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* and other terminals
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*/
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extern t_nont nonterms[]; /* the nonterminal array */
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extern p_nont maxnt; /* is filled up until here */
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extern int order[]; /* order of nonterminals in the grammar,
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* important because actions are copied to
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* a temporary file in the order in which they
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* were read
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*/
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extern int *maxorder; /* will contain &order[nnonterms] */
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extern t_entry h_entry[]; /* terminal and nonterminal entrys,
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* first NTERMINAL entrys reserved
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* for terminals
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*/
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extern p_entry max_t_ent; /* will contain &h_entry[nterminals] */
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# define min_nt_ent &h_entry[NTERMINALS]
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extern string pentry[]; /* pointers to various allocated things */
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extern string e_noopen; /* Error message string used often */
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extern int verbose; /* Level of verbosity */
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extern string lexical; /* name of lexical analyser */
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extern int ntneeded; /* ntneeded = 1 if nonterminals are included
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* in the sets.
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*/
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extern int ntprint; /* ntprint = 1 if they must be printed too in
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* the LL.output file (-x option)
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*/
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# ifndef NDEBUG
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extern int debug;
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# endif not NDEBUG
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extern p_file files,pfile; /* pointers to file structure.
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* "files" points to the start of the
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* list */
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extern string LLgenid; /* LLgen identification string */
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extern t_token lextoken; /* the current token */
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extern int nerrors;
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extern int fflag; /* Enable compiler to generate jump tables
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* for switches?
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*/
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