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+/* routines.h: Generating the finite state automaton
+
+This file is part of Omega,
+which is based on the web2c distribution of TeX,
+
+Copyright (c) 1994--2001 John Plaice and Yannis Haralambous
+Copyright (C) 2005 Roozbeh Pournader
+
+Omega is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+Omega is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Omega; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <w2c/config.h>
+#endif
+#ifdef KPATHSEA
+#include <kpathsea/config.h>
+#include <kpathsea/c-memstr.h>
+#include <kpathsea/c-std.h>
+#else /* !KPATHSEA */
+#include <stdio.h>
+#include <string.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#else
+extern void exit();
+#endif
+#endif /* KPATHSEA */
+
+#define nil 0
+
+#define WILDCARD 0
+#define STRINGLEFT 1
+#define SINGLELEFT 2
+#define DOUBLELEFT 3
+#define CHOICELEFT 4
+#define NOTCHOICELEFT 5
+#define PLUSLEFT 6
+#define COMPLETELEFT 7
+#define BEGINNINGLEFT 8
+#define ENDLEFT 9
+
+extern int yyparse(void);
+extern int yylex(void);
+extern int yywrap(void);
+
+extern int line_number;
+
+/* linked list of ints */
+typedef struct cell_struct {struct cell_struct *ptr;
+ int val; } cell;
+typedef cell *list;
+
+typedef struct left_cell {
+ int kind;
+ int val1, val2;
+ char *valstr;
+ struct lcell_struct *more_lefts;
+ struct left_cell *one_left;
+} lft_cell;
+typedef lft_cell *left;
+
+/* linked list of lefts */
+typedef struct lcell_struct {struct lcell_struct *ptr;
+ left val; } lcell;
+typedef lcell *llist;
+
+extern list cons(int x, list L);
+extern list list1(int x);
+extern list list2(int x, int y);
+extern list append(list K, list L);
+extern list append1(list L, int x);
+
+extern llist lcons(left x, llist L);
+extern llist llist1(left x);
+extern llist llist2(left x, left y);
+extern llist lappend(llist K, llist L);
+extern llist lappend1(llist L, left x);
+
+extern left WildCard(void);
+extern left StringLeft(char *x);
+extern left SingleLeft(int x);
+extern left DoubleLeft(int x, int y);
+extern left ChoiceLeft(llist L);
+extern left NotChoiceLeft(llist L);
+extern left PlusLeft(left l, int n);
+extern left CompleteLeft(left l, int n, int m);
+extern left BeginningLeft(void);
+extern left EndLeft(void);
+extern list gen_left(left arg);
+
+extern int no_lefts;
+extern void store_alias(string str, left l);
+extern left lookup_alias(string str);
+extern void out_left(llist L);
+extern void fill_in_left(void);
+
+#define ARRAY_SIZE 50000
+typedef struct {
+ int length;
+ char * str;
+ int table[ARRAY_SIZE];
+} table_type;
+
+extern int no_tables;
+extern int cur_table;
+extern int room_for_tables;
+extern table_type tables[];
+extern void add_to_table(int x);
+
+typedef struct {
+ int length;
+ char * str;
+ int no_exprs;
+ int instrs[ARRAY_SIZE];
+} state_type;
+
+extern int no_states;
+extern int cur_state;
+extern int room_for_states;
+extern state_type states[];
+extern void add_to_state(int x);
+
+extern void fill_in(list L);
+extern void out_int(int instr, int val);
+extern void out_right(int instr, int val);
+
+extern void store_state(const_string str);
+extern int lookup_state(string str);
+extern void store_table(string str, int len);
+extern int lookup_table(string str);
+
+typedef struct { char * str; left left_val; } alias_pair;
+
+extern alias_pair aliases[];
+
+extern int right_offset;
+extern int input_bytes;
+extern int output_bytes;
+