Initial revision

util/LLgen/src/extern.h

@@ -0,0 +1,86 @@
+/*
+ * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ *
+ *          This product is part of the Amsterdam Compiler Kit.
+ *
+ * Permission to use, sell, duplicate or disclose this software must be
+ * obtained in writing. Requests for such permissions may be sent to
+ *
+ *      Dr. Andrew S. Tanenbaum
+ *      Wiskundig Seminarium
+ *      Vrije Universiteit
+ *      Postbox 7161
+ *      1007 MC Amsterdam
+ *      The Netherlands
+ *
+ */
+
+/*
+ *  L L G E N
+ *
+ *  An Extended LL(1) Parser Generator
+ *
+ *  Author : Ceriel J.H. Jacobs
+ */
+
+/*
+ * extern.h $Header$
+ * Miscellanious constants and
+ * some variables that are visible in more than one file
+ */
+
+/*
+ * options for the identifier search routine
+ */
+# define JUSTLOOKING	0
+# define ENTERING	1
+# define BOTH		2
+
+/*
+ * Now for some	declarations
+ */
+
+extern char	ltext[];	/* input buffer	*/
+extern int	nnonterms;	/* number of nonterminals */
+extern int	nterminals;	/* number of terminals */
+extern p_start	start;		/* will	contain	startsymbols */
+extern int	linecount;	/* line number */
+extern int	assval;		/* to create difference	between	literals
+				 * and other terminals
+				 */
+extern t_nont	nonterms[];	/* the nonterminal array */
+extern p_nont	maxnt;		/* is filled up until here */
+extern int	order[];	/* order of nonterminals in the grammar,
+				 * important because actions are copied to
+				 * a temporary file in the order in which they
+				 * were read
+				 */
+extern int	*maxorder;	/* will contain &order[nnonterms] */
+extern t_entry	h_entry[];	/* terminal and nonterminal entrys,
+				 * first NTERMINAL entrys reserved
+				 * for terminals
+				 */
+extern p_entry	max_t_ent;	/* will contain &h_entry[nterminals] */
+# define	min_nt_ent	&h_entry[NTERMINALS]
+extern string	pentry[];	/* pointers to various allocated things */
+extern string	e_noopen;	/* Error message string used often */
+extern int	verbose;	/* Level of verbosity */
+extern string	lexical;	/* name of lexical analyser */
+extern int	ntneeded;	/* ntneeded = 1 if nonterminals are included
+				 * in the sets.
+				 */
+extern int	ntprint;	/* ntprint = 1 if they must be printed too in
+				 * the LL.output file (-x option)
+				 */
+# ifndef NDEBUG
+extern int	debug;
+# endif not NDEBUG
+extern p_file	files,pfile;	/* pointers to file structure.
+				 * "files" points to the start of the
+				 * list */
+extern string	LLgenid;	/* LLgen identification string */
+extern t_token	lextoken;	/* the current token */
+extern int	nerrors;
+extern int	fflag;		/* Enable compiler to generate jump tables
+				 * for switches?
+				 */