457 lines
9.3 KiB
C
457 lines
9.3 KiB
C
/*
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Paul Corbett.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)defs.h 5.6 (Berkeley) 5/24/93
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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/* Quiet warnings which might bother rpm */
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#ifdef __GNUC__
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#pragma GCC diagnostic ignored "-Wimplicit-function-declaration"
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#pragma GCC diagnostic ignored "-Wreturn-type"
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#endif
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/* machine-dependent definitions */
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/* the following definitions are for the Tahoe */
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/* they might have to be changed for other machines */
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/* MAXCHAR is the largest unsigned character value */
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/* MAXSHORT is the largest value of a C short */
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/* MINSHORT is the most negative value of a C short */
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/* MAXTABLE is the maximum table size */
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/* BITS_PER_WORD is the number of bits in a C unsigned */
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/* WORDSIZE computes the number of words needed to */
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/* store n bits */
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/* BIT returns the value of the n-th bit starting */
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/* from r (0-indexed) */
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/* SETBIT sets the n-th bit starting from r */
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#define MAXCHAR 255
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#define MAXSHORT 32767
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#define MINSHORT -32768
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#define MAXTABLE 32500
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#define BITS_PER_WORD 32
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#define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
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#define BIT(r, n) ((((r)[(n)>>5])>>((n)&31))&1)
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#define SETBIT(r, n) ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
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/* character names */
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#define NUL '\0' /* the null character */
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#define NEWLINE '\n' /* line feed */
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#define SP ' ' /* space */
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#define BS '\b' /* backspace */
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#define HT '\t' /* horizontal tab */
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#define VT '\013' /* vertical tab */
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#define CR '\r' /* carriage return */
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#define FF '\f' /* form feed */
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#define QUOTE '\'' /* single quote */
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#define DOUBLE_QUOTE '\"' /* double quote */
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#define BACKSLASH '\\' /* backslash */
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/* defines for constructing filenames */
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#define CODE_SUFFIX ".code.c"
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#define DEFINES_SUFFIX ".tab.h"
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#define OUTPUT_SUFFIX ".tab.c"
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#define VERBOSE_SUFFIX ".output"
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/* keyword codes */
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#define TOKEN 0
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#define LEFT 1
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#define RIGHT 2
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#define NONASSOC 3
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#define MARK 4
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#define TEXT 5
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#define TYPE 6
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#define START 7
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/* symbol classes */
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#define UNKNOWN 0
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#define TERM 1
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#define NONTERM 2
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/* the undefined value */
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#define UNDEFINED (-1)
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/* action codes */
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#define SHIFT 1
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#define REDUCE 2
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/* character macros */
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#define IS_IDENT(c) (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
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#define IS_OCTAL(c) ((c) >= '0' && (c) <= '7')
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#define NUMERIC_VALUE(c) ((c) - '0')
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/* symbol macros */
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#define ISTOKEN(s) ((s) < start_symbol)
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#define ISVAR(s) ((s) >= start_symbol)
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/* storage allocation macros */
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#define CALLOC(k,n) (calloc((unsigned)(k),(unsigned)(n)))
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#define FREE(x) (free((char*)(x)))
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#define MALLOC(n) (malloc((unsigned)(n)))
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#define NEW(t) ((t*)allocate(sizeof(t)))
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#define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t))))
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#define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n)))
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/* the structure of a symbol table entry */
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typedef struct bucket bucket;
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struct bucket
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{
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struct bucket *link;
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struct bucket *next;
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char *name;
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char *tag;
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short value;
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short index;
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short prec;
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#define class clas
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char class;
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char assoc;
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};
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/* the structure of the LR(0) state machine */
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typedef struct core core;
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struct core
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{
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struct core *next;
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struct core *link;
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short number;
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short accessing_symbol;
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short nitems;
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short items[1];
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};
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/* the structure used to record shifts */
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typedef struct shifts shifts;
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struct shifts
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{
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struct shifts *next;
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short number;
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short nshifts;
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short shift[1];
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};
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/* the structure used to store reductions */
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typedef struct reductions reductions;
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struct reductions
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{
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struct reductions *next;
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short number;
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short nreds;
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short rules[1];
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};
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/* the structure used to represent parser actions */
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typedef struct action action;
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struct action
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{
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struct action *next;
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short symbol;
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short number;
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short prec;
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char action_code;
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char assoc;
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char suppressed;
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};
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/* global variables */
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extern char tflag;
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extern char vflag;
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extern char *myname;
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extern char *cptr;
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extern char *line;
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extern int lineno;
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extern int outline;
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extern char *action_file_name;
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extern char *input_file_name;
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extern char *prolog_file_name;
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extern char *local_file_name;
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extern char *verbose_file_name;
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extern char *output_file_name;
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extern FILE *action_file;
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extern FILE *input_file;
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extern FILE *prolog_file;
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extern FILE *local_file;
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extern FILE *verbose_file;
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extern FILE *output_file;
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extern int nitems;
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extern int nrules;
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extern int nsyms;
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extern int ntokens;
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extern int nvars;
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extern int nmethods;
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extern const char *line_format;
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extern const char *default_line_format;
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extern int start_symbol;
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extern char **symbol_name;
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extern short *symbol_value;
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extern short *symbol_prec;
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extern char *symbol_assoc;
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extern char **methods;
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extern short *ritem;
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extern short *rlhs;
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extern short *rrhs;
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extern short *rprec;
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extern char *rassoc;
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extern short **derives;
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extern char *nullable;
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extern bucket *first_symbol;
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extern bucket *last_symbol;
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extern int nstates;
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extern core *first_state;
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extern shifts *first_shift;
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extern reductions *first_reduction;
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extern short *accessing_symbol;
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extern core **state_table;
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extern shifts **shift_table;
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extern reductions **reduction_table;
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extern unsigned *LA;
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extern short *LAruleno;
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extern short *lookaheads;
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extern short *goto_map;
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extern short *from_state;
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extern short *to_state;
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extern action **parser;
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extern int SRtotal;
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extern int RRtotal;
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extern short *SRconflicts;
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extern short *RRconflicts;
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extern short *defred;
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extern short *rules_used;
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extern short nunused;
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extern short final_state;
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/* global functions */
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char *
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allocate (unsigned);
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bucket *
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lookup (const char *);
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bucket *
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make_bucket (const char *);
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void
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reflexive_transitive_closure (unsigned *R, int n);
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void
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done (int);
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void
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fatal (const char*);
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void
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no_space (void);
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void
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finalize_closure (void);
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void
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closure (short *nucleus, int n);
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void
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set_first_derives (void);
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void
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open_error (const char *filename);
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void
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make_parser (void);
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void
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free_parser (void);
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void
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lr0 (void);
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void
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output (void);
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void
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verbose (void);
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void
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xxlr0 (void);
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void
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reader (void);
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void
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lalr (void);
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void
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free_symbols (void);
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void
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free_symbol_table (void);
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void
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create_symbol_table (void);
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void
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fatal (const char *msg);
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void
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no_space (void);
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void
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open_error (const char *filename);
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void
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unexpected_EOF (void);
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void
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syntax_error (int st_lineno, const char *st_line, const char *st_cptr);
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void
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unterminated_comment (int c_lineno, const char *c_line, const char *c_cptr);
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void
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unterminated_string (int s_lineno, const char *s_line, const char *s_cptr);
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void
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unterminated_text (int t_lineno, const char *t_line, const char *t_cptr);
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void
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illegal_tag (int t_lineno, const char *t_line, const char *t_cptr);
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void
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illegal_character (const char *c_cptr);
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void
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used_reserved (const char *s);
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void
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tokenized_start (const char *s);
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void
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retyped_warning (const char *s);
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void
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reprec_warning (const char *s);
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void
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revalued_warning (const char *s);
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void
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terminal_start (const char *s);
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void
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restarted_warning (void);
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void
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no_grammar (void);
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void
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terminal_lhs (int s_lineno);
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void
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prec_redeclared (void);
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void
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unterminated_action (int a_lineno, const char *a_line, const char *a_cptr);
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void
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dollar_warning (int a_lineno, int i);
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void
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dollar_error (int a_lineno, const char *a_line, char *a_cptr);
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void
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untyped_lhs (void);
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void
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untyped_rhs (int i, const char *s);
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void
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unknown_rhs (int i);
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void
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default_action_warning (void);
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void
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undefined_goal (const char *s);
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void
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undefined_symbol_warning (const char *s);
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