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/* $OpenBSD: defs.h,v 1.20 2020/05/24 17:31:54 espie Exp $ */
/* $NetBSD: defs.h,v 1.6 1996/03/19 03:21:30 jtc Exp $ */
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Robert Paul Corbett.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)defs.h 5.6 (Berkeley) 5/24/93
*/
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/* machine-dependent definitions */
/* the following definitions are for the Tahoe */
/* they might have to be changed for other machines */
/* MAXCHAR is the largest unsigned character value */
/* MAXSHORT is the largest value of a C short */
/* MINSHORT is the most negative value of a C short */
/* MAXTABLE is the maximum table size */
/* BITS_PER_WORD is the number of bits in a C unsigned */
/* WORDSIZE computes the number of words needed to */
/* store n bits */
/* BIT returns the value of the n-th bit starting */
/* from r (0-indexed) */
/* SETBIT sets the n-th bit starting from r */
#define MAXCHAR 255
#define MAXSHORT 32767
#define MINSHORT -32768
#define MAXTABLE 32500
#define BITS_PER_WORD 32
#define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
#define BIT(r, n) ((((r)[(n)>>5])>>((n)&31))&1)
#define SETBIT(r, n) ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
/* character names */
#define NUL '\0' /* the null character */
#define NEWLINE '\n' /* line feed */
#define SP ' ' /* space */
#define BS '\b' /* backspace */
#define HT '\t' /* horizontal tab */
#define VT '\013' /* vertical tab */
#define CR '\r' /* carriage return */
#define FF '\f' /* form feed */
#define QUOTE '\'' /* single quote */
#define DOUBLE_QUOTE '\"' /* double quote */
#define BACKSLASH '\\' /* backslash */
/* defines for constructing filenames */
#define CODE_SUFFIX ".code.c"
#define DEFINES_SUFFIX ".tab.h"
#define OUTPUT_SUFFIX ".tab.c"
#define VERBOSE_SUFFIX ".output"
/* keyword codes */
#define TOKEN 0
#define LEFT 1
#define RIGHT 2
#define NONASSOC 3
#define MARK 4
#define TEXT 5
#define TYPE 6
#define START 7
#define UNION 8
#define IDENT 9
#define EXPECT 10
/* symbol classes */
#define UNKNOWN 0
#define TERM 1
#define NONTERM 2
/* the undefined value */
#define UNDEFINED (-1)
/* action codes */
#define SHIFT 1
#define REDUCE 2
/* character macros */
#define IS_IDENT(c) (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
#define NUMERIC_VALUE(c) ((c) - '0')
/* symbol macros */
#define ISTOKEN(s) ((s) < start_symbol)
#define ISVAR(s) ((s) >= start_symbol)
/* storage allocation macros */
#define NEW(t) ((t*)allocate(sizeof(t)))
#define NEW2(n,t) ((t*)allocate((n)*sizeof(t)))
/* the structure of a symbol table entry */
typedef struct bucket bucket;
struct bucket {
struct bucket *link;
struct bucket *next;
char *name;
char *tag;
short value;
short index;
short prec;
char class;
char assoc;
};
/* the structure of the LR(0) state machine */
typedef struct core core;
struct core {
struct core *next;
struct core *link;
short number;
short accessing_symbol;
short nitems;
short items[1];
};
/* the structure used to record shifts */
typedef struct shifts shifts;
struct shifts {
struct shifts *next;
short number;
short nshifts;
short shift[1];
};
/* the structure used to store reductions */
typedef struct reductions reductions;
struct reductions {
struct reductions *next;
short number;
short nreds;
short rules[1];
};
/* the structure used to represent parser actions */
typedef struct action action;
struct action {
struct action *next;
short symbol;
short number;
short prec;
char action_code;
char assoc;
char suppressed;
};
/* global variables */
extern char dflag;
extern char lflag;
extern char rflag;
extern char tflag;
extern char vflag;
extern char *symbol_prefix;
extern char *cptr;
extern char *line;
extern int lineno;
extern int outline;
extern char *banner[];
extern char *tables[];
extern char *header[];
extern char *body[];
extern char *trailer[];
extern char *code_file_name;
extern char *defines_file_name;
extern char *input_file_name;
extern char *output_file_name;
extern char *verbose_file_name;
extern FILE *action_file;
extern FILE *code_file;
extern FILE *defines_file;
extern FILE *input_file;
extern FILE *output_file;
extern FILE *text_file;
extern FILE *union_file;
extern FILE *verbose_file;
extern int nitems;
extern int nrules;
extern int nsyms;
extern int ntokens;
extern int nvars;
extern int ntags;
extern char unionized;
extern char line_format[];
extern int start_symbol;
extern char **symbol_name;
extern short *symbol_value;
extern short *symbol_prec;
extern char *symbol_assoc;
extern short *ritem;
extern short *rlhs;
extern short *rrhs;
extern short *rprec;
extern char *rassoc;
extern short **derives;
extern char *nullable;
extern bucket *first_symbol;
extern bucket *last_symbol;
extern int nstates;
extern core *first_state;
extern shifts *first_shift;
extern reductions *first_reduction;
extern short *accessing_symbol;
extern core **state_table;
extern shifts **shift_table;
extern reductions **reduction_table;
extern unsigned *LA;
extern short *LAruleno;
extern short *lookaheads;
extern short *goto_map;
extern short *from_state;
extern short *to_state;
extern action **parser;
extern int SRtotal;
extern int SRexpect;
extern int RRtotal;
extern short *SRconflicts;
extern short *RRconflicts;
extern short *defred;
extern short *rules_used;
extern short nunused;
extern short final_state;
/* global functions */
extern void *allocate(size_t);
extern bucket *lookup(char *);
extern bucket *make_bucket(char *);
extern void set_first_derives(void);
extern void closure(short *, int);
extern void finalize_closure(void);
extern __dead void fatal(char *);
extern void reflexive_transitive_closure(unsigned *, int);
extern __dead void no_space(void);
extern __dead void open_error(char *);
extern __dead void tempfile_error(void);
extern __dead void open_write_error(char *);
extern __dead void unexpected_EOF(void);
extern void print_pos(char *, char *);
extern __dead void syntax_error(int, char *, char *);
extern __dead void unterminated_comment(int, char *, char *);
extern __dead void unterminated_string(int, char *, char *);
extern __dead void unterminated_text(int, char *, char *);
extern __dead void unterminated_union(int, char *, char *);
extern __dead void over_unionized(char *);
extern __dead void illegal_tag(int, char *, char *);
extern __dead void illegal_character(char *);
extern __dead void used_reserved(char *);
extern __dead void tokenized_start(char *);
extern void retyped_warning(char *);
extern void reprec_warning(char *);
extern void revalued_warning(char *);
extern __dead void terminal_start(char *);
extern void restarted_warning(void);
extern __dead void no_grammar(void);
extern __dead void terminal_lhs(int);
extern void prec_redeclared(void);
extern __dead void unterminated_action(int, char *, char *);
extern void dollar_warning(int, int);
extern __dead void dollar_error(int, char *, char *);
extern __dead void untyped_lhs(void);
extern __dead void untyped_rhs(int, char *);
extern __dead void unknown_rhs(int);
extern void default_action_warning(void);
extern __dead void undefined_goal(char *);
extern void undefined_symbol_warning(char *);
extern void lalr(void);
extern void reader(void);
extern void lr0(void);
extern void free_nullable(void);
extern void free_derives(void);
extern void make_parser(void);
extern void verbose(void);
extern void output(void);
extern void free_parser(void);
extern void write_section(char *[]);
extern void create_symbol_table(void);
extern void free_symbol_table(void);
extern void free_symbols(void);
/* system variables */
extern char *__progname;
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