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freebsd-skq/contrib/byacc/defs.h
bapt 913116490c Import byacc from invisible island, it brings us lots of compatibilities with 
bison, keeping full compatibility with our previous yacc implementation.

Also bring the ability to create reentrant parser

This fix bin/140309 [1]

PR:		bin/140309 [1]
Submitted by:	Philippe Pepiot <ksh@philpep.org> [1]
Approved by:	des (mentor)
MFC after:	1 month
2012-05-21 13:31:26 +00:00

439 lines
11 KiB
C
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/* $Id: defs.h,v 1.36 2011/12/20 01:31:16 tom Exp $ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#define YYMAJOR 1
#define YYMINOR 9
#define CONCAT(first,second) first #second
#define CONCAT1(string,number) CONCAT(string, number)
#define CONCAT2(first,second) #first "." #second
#ifdef YYPATCH
#define VSTRING(a,b) CONCAT2(a,b) CONCAT1(" ",YYPATCH)
#else
#define VSTRING(a,b) CONCAT2(a,b)
#endif
#define VERSION VSTRING(YYMAJOR, YYMINOR)
/* 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 */
#define UCH(c) (unsigned char)(c)
/* defines for constructing filenames */
#if defined(VMS)
#define CODE_SUFFIX "_code.c"
#define DEFINES_SUFFIX "_tab.h"
#define EXTERNS_SUFFIX "_tab.i"
#define OUTPUT_SUFFIX "_tab.c"
#else
#define CODE_SUFFIX ".code.c"
#define DEFINES_SUFFIX ".tab.h"
#define EXTERNS_SUFFIX ".tab.i"
#define OUTPUT_SUFFIX ".tab.c"
#endif
#define VERBOSE_SUFFIX ".output"
#define GRAPH_SUFFIX ".dot"
/* 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
#define EXPECT_RR 11
#define PURE_PARSER 12
#define PARSE_PARAM 13
#define LEX_PARAM 14
#define POSIX_YACC 15
/* 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 IS_OCTAL(c) ((c) >= '0' && (c) <= '7')
#define NUMERIC_VALUE(c) ((c) - '0')
/* symbol macros */
#define ISTOKEN(s) ((s) < start_symbol)
#define ISVAR(s) ((s) >= start_symbol)
/* storage allocation macros */
#define CALLOC(k,n) (calloc((size_t)(k),(size_t)(n)))
#define FREE(x) (free((char*)(x)))
#define MALLOC(n) (malloc((size_t)(n)))
#define NEW(t) ((t*)allocate(sizeof(t)))
#define NEW2(n,t) ((t*)allocate(((size_t)(n)*sizeof(t))))
#define REALLOC(p,n) (realloc((char*)(p),(size_t)(n)))
#define DO_FREE(x) if (x) { FREE(x); x = 0; }
#define NO_SPACE(p) if (p == 0) no_space(); assert(p != 0)
/* messages */
#define PLURAL(n) ((n) > 1 ? "s" : "")
typedef char Assoc_t;
typedef char Class_t;
typedef short Index_t;
typedef short Value_t;
/* the structure of a symbol table entry */
typedef struct bucket bucket;
struct bucket
{
struct bucket *link;
struct bucket *next;
char *name;
char *tag;
Value_t value;
Index_t index;
Value_t prec;
Class_t class;
Assoc_t assoc;
};
/* the structure of the LR(0) state machine */
typedef struct core core;
struct core
{
struct core *next;
struct core *link;
Value_t number;
Value_t accessing_symbol;
Value_t nitems;
Value_t items[1];
};
/* the structure used to record shifts */
typedef struct shifts shifts;
struct shifts
{
struct shifts *next;
Value_t number;
Value_t nshifts;
Value_t shift[1];
};
/* the structure used to store reductions */
typedef struct reductions reductions;
struct reductions
{
struct reductions *next;
Value_t number;
Value_t nreds;
Value_t rules[1];
};
/* the structure used to represent parser actions */
typedef struct action action;
struct action
{
struct action *next;
Value_t symbol;
Value_t number;
Value_t prec;
char action_code;
Assoc_t assoc;
char suppressed;
};
/* the structure used to store parse/lex parameters */
typedef struct param param;
struct param
{
struct param *next;
char *name; /* parameter name */
char *type; /* everything before parameter name */
char *type2; /* everything after parameter name */
};
/* global variables */
extern char dflag;
extern char gflag;
extern char iflag;
extern char lflag;
extern char rflag;
extern char sflag;
extern char tflag;
extern char vflag;
extern const char *symbol_prefix;
extern const char *myname;
extern char *cptr;
extern char *line;
extern int lineno;
extern int outline;
extern int exit_code;
extern const char *const banner[];
extern const char *const xdecls[];
extern const char *const tables[];
extern const char *const global_vars[];
extern const char *const impure_vars[];
extern const char *const hdr_defs[];
extern const char *const hdr_vars[];
extern const char *const body_1[];
extern const char *const body_vars[];
extern const char *const body_2[];
extern const char *const body_3[];
extern const char *const trailer[];
extern const char *const trailer_2[];
extern char *code_file_name;
extern char *input_file_name;
extern char *defines_file_name;
extern char *externs_file_name;
extern FILE *action_file;
extern FILE *code_file;
extern FILE *defines_file;
extern FILE *externs_file;
extern FILE *input_file;
extern FILE *output_file;
extern FILE *text_file;
extern FILE *union_file;
extern FILE *verbose_file;
extern FILE *graph_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 Value_t start_symbol;
extern char **symbol_name;
extern char **symbol_pname;
extern Value_t *symbol_value;
extern Value_t *symbol_prec;
extern char *symbol_assoc;
extern Value_t *ritem;
extern Value_t *rlhs;
extern Value_t *rrhs;
extern Value_t *rprec;
extern Assoc_t *rassoc;
extern Value_t **derives;
extern char *nullable;
extern bucket *first_symbol;
extern bucket *last_symbol;
extern int pure_parser;
extern int nstates;
extern core *first_state;
extern shifts *first_shift;
extern reductions *first_reduction;
extern Value_t *accessing_symbol;
extern core **state_table;
extern shifts **shift_table;
extern reductions **reduction_table;
extern unsigned *LA;
extern Value_t *LAruleno;
extern Value_t *lookaheads;
extern Value_t *goto_map;
extern Value_t *from_state;
extern Value_t *to_state;
extern action **parser;
extern int SRexpect;
extern int RRexpect;
extern int SRtotal;
extern int RRtotal;
extern Value_t *SRconflicts;
extern Value_t *RRconflicts;
extern Value_t *defred;
extern Value_t *rules_used;
extern Value_t nunused;
extern Value_t final_state;
extern Value_t *itemset;
extern Value_t *itemsetend;
extern unsigned *ruleset;
extern param *lex_param;
extern param *parse_param;
/* global functions */
extern bucket *lookup(const char *);
extern bucket *make_bucket(const char *);
#ifndef GCC_NORETURN
#define GCC_NORETURN /* nothing */
#endif
#ifndef GCC_UNUSED
#define GCC_UNUSED /* nothing */
#endif
/* closure.c */
extern void closure(Value_t * nucleus, int n);
extern void finalize_closure(void);
extern void set_first_derives(void);
/* error.c */
extern void default_action_warning(void);
extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
extern void dollar_warning(int a_lineno, int i);
extern void fatal(const char *msg) GCC_NORETURN;
extern void illegal_character(char *c_cptr) GCC_NORETURN;
extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
extern void missing_brace(void) GCC_NORETURN;
extern void no_grammar(void) GCC_NORETURN;
extern void no_space(void) GCC_NORETURN;
extern void open_error(const char *filename) GCC_NORETURN;
extern void over_unionized(char *u_cptr) GCC_NORETURN;
extern void prec_redeclared(void);
extern void reprec_warning(char *s);
extern void restarted_warning(void);
extern void retyped_warning(char *s);
extern void revalued_warning(char *s);
extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
extern void terminal_lhs(int s_lineno) GCC_NORETURN;
extern void terminal_start(char *s) GCC_NORETURN;
extern void tokenized_start(char *s) GCC_NORETURN;
extern void undefined_goal(char *s) GCC_NORETURN;
extern void undefined_symbol_warning(char *s);
extern void unexpected_EOF(void) GCC_NORETURN;
extern void unknown_rhs(int i) GCC_NORETURN;
extern void unterminated_action(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
extern void unterminated_comment(int c_lineno, char *c_line, char *c_cptr) GCC_NORETURN;
extern void unterminated_string(int s_lineno, char *s_line, char *s_cptr) GCC_NORETURN;
extern void unterminated_text(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
extern void unterminated_union(int u_lineno, char *u_line, char *u_cptr) GCC_NORETURN;
extern void untyped_lhs(void) GCC_NORETURN;
extern void untyped_rhs(int i, char *s) GCC_NORETURN;
extern void used_reserved(char *s) GCC_NORETURN;
/* graph.c */
extern void graph(void);
/* lalr.c */
extern void create_symbol_table(void);
extern void free_symbol_table(void);
extern void free_symbols(void);
/* lalr.c */
extern void lalr(void);
/* lr0.c */
extern void lr0(void);
extern void show_cores(void);
extern void show_ritems(void);
extern void show_rrhs(void);
extern void show_shifts(void);
/* main.c */
extern void *allocate(size_t n);
extern void done(int k) GCC_NORETURN;
/* mkpar.c */
extern void free_parser(void);
extern void make_parser(void);
/* output.c */
extern void output(void);
/* reader.c */
extern void reader(void);
/* skeleton.c */
extern void write_section(FILE *fp, const char *const section[]);
/* verbose.c */
extern void verbose(void);
/* warshall.c */
extern void reflexive_transitive_closure(unsigned *R, int n);
#ifdef NO_LEAKS
extern void lr0_leaks(void);
extern void lalr_leaks(void);
extern void mkpar_leaks(void);
extern void output_leaks(void);
extern void reader_leaks(void);
#endif
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