mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-22 20:03:02 +01:00
519 lines
12 KiB
C
519 lines
12 KiB
C
#include <stdlib.h>
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#include <string.h>
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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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/* 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 ((int)0x7FFFFFFF)
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#define MINSHORT ((int)0x80000000)
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#define MAXTABLE 200000
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#ifdef __MSDOS__
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#define BITS_PER_WORD 16
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#define LOG2_BPW 4
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#else /* Real computers... */
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#define BITS_PER_WORD 32
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#define LOG2_BPW 5
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#endif
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#define BITS_PER_WORD_1 (BITS_PER_WORD-1)
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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)>>LOG2_BPW])>>((n)&BITS_PER_WORD_1))&1)
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#define SETBIT(r, n) ((r)[(n)>>LOG2_BPW]|=((unsigned)1<<((n)&BITS_PER_WORD_1)))
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/* VM: this is a 32-bit replacement for original 16-bit short */
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typedef int Yshort;
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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 DEFINES_SUFFIX "_tab.h"
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#define OUTPUT_SUFFIX "_tab.c"
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#define CODE_SUFFIX "_code.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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#define UNION 8
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#define IDENT 9
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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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#define ACTION 3
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#define ARGUMENT 4
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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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#define RENEW(p,n,t) ((t*)realloc((char*)(p),(unsigned)((n)*sizeof(t))))
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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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char **argnames;
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char **argtags;
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Yshort args;
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Yshort value;
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Yshort index;
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Yshort prec;
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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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Yshort number;
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Yshort accessing_symbol;
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Yshort nitems;
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Yshort 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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Yshort number;
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Yshort nshifts;
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Yshort 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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Yshort number;
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Yshort nreds;
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Yshort 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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Yshort symbol;
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Yshort number;
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Yshort 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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struct section {
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char *name;
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char **ptr;
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};
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extern struct section section_list[];
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/* global variables */
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extern char dflag;
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extern char lflag;
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extern char rflag;
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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 *banner[];
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extern char *tables[];
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extern char *header[];
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extern char *body[];
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extern char *trailer[];
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extern char *action_file_name;
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extern char *code_file_name;
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extern char *defines_file_name;
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extern char *input_file_name;
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extern char *output_file_name;
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extern char *text_file_name;
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extern char *union_file_name;
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extern char *verbose_file_name;
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extern FILE *inc_file;
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extern char inc_file_name[];
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extern FILE *action_file;
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extern FILE *code_file;
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extern FILE *defines_file;
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extern FILE *input_file;
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extern FILE *output_file;
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extern FILE *text_file;
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extern FILE *union_file;
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extern FILE *verbose_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 ntags;
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extern char unionized;
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extern char line_format[];
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extern int start_symbol;
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extern char **symbol_name;
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extern Yshort *symbol_value;
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extern Yshort *symbol_prec;
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extern char *symbol_assoc;
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extern Yshort *ritem;
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extern Yshort *rlhs;
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extern Yshort *rrhs;
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extern Yshort *rprec;
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extern char *rassoc;
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extern Yshort **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 Yshort *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 Yshort *LAruleno;
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extern Yshort *lookaheads;
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extern Yshort *goto_map;
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extern Yshort *from_state;
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extern Yshort *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 Yshort *SRconflicts;
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extern Yshort *RRconflicts;
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extern Yshort *defred;
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extern Yshort *rules_used;
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extern Yshort nunused;
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extern Yshort final_state;
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/* system variable */
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#ifndef _MSC_VER
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extern int errno;
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#endif
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/* global functions */
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/* closure.c */
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void set_EFF(void);
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void set_first_derives(void);
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void closure(Yshort *, int);
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void finalize_closure(void);
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void print_closure(int);
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void print_EFF(void);
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void print_first_derives(void);
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/* error.c */
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void fatal(char *);
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void no_space(void);
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void open_error(char *);
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void unexpected_EOF(void);
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void print_pos(char *, char *);
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void error(int, char *, char *, char *, ...);
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void syntax_error(int, char *, char *);
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void unterminated_comment(int, char *, char *);
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void unterminated_string(int, char *, char *);
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void unterminated_text(int, char *, char *);
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void unterminated_union(int, char *, char *);
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void over_unionized(char *);
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void illegal_tag(int, char *, char *);
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void illegal_character(char *);
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void used_reserved(char *);
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void tokenized_start(char *);
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void retyped_warning(char *);
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void reprec_warning(char *);
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void revalued_warning(char *);
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void terminal_start(char *);
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void restarted_warning(void);
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void no_grammar(void);
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void terminal_lhs(int);
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void prec_redeclared(void);
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void unterminated_action(int, char *, char *);
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void unterminated_arglist(int, char *, char *);
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void bad_formals(void);
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void dollar_warning(int, int);
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void dollar_error(int, char *, char *);
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void untyped_lhs(void);
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void untyped_rhs(int, char *);
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void unknown_rhs(int);
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void default_action_warning(void);
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void undefined_goal(char *);
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void undefined_symbol_warning(char *);
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/* lalr.c */
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void lalr(void);
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void set_state_table(void);
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void set_accessing_symbol(void);
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void set_shift_table(void);
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void set_reduction_table(void);
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void set_maxrhs(void);
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void initialize_LA(void);
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void set_goto_map(void);
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int map_goto(int, int);
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void initialize_F(void);
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void build_relations(void);
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void add_lookback_edge(int, int, int);
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Yshort **transpose(Yshort **, int);
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void compute_FOLLOWS(void);
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void compute_lookaheads(void);
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void digraph(Yshort **);
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void traverse(int);
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/* lr0.c */
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void allocate_itemsets(void);
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void allocate_storage(void);
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void append_states(void);
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void free_storage(void);
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void generate_states(void);
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int get_state(int);
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void initialize_states(void);
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void new_itemsets(void);
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core *new_state(int);
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void show_cores(void);
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void show_ritems(void);
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void show_rrhs(void);
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void show_shifts(void);
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void save_shifts(void);
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void save_reductions(void);
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void set_derives(void);
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void free_derives(void);
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void print_derives(void);
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void set_nullable(void);
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void free_nullable(void);
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void lr0(void);
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/* main.c */
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void done(int);
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void onintr(int);
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void set_signals(void);
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void usage(void);
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void getargs(int, char **);
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char *allocate(unsigned);
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void create_file_names(void);
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void open_files(void);
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int main(int, char **);
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/* mkpar.c */
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void make_parser(void);
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action *parse_actions(int);
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action *get_shifts(int);
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action *add_reductions(int, action *);
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action *add_reduce(action *, int, int);
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void find_final_state(void);
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void unused_rules(void);
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void remove_conflicts(void);
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void total_conflicts(void);
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int sole_reduction(int);
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void defreds(void);
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void free_action_row(action *);
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void free_parser(void);
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/* output.c */
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void output(void);
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void output_rule_data(void);
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void output_yydefred(void);
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void output_actions(void);
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int find_conflict_base(int);
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void token_actions(void);
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void goto_actions(void);
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int default_goto(int);
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void save_column(int, int);
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void sort_actions(void);
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void pack_table(void);
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int matching_vector(int);
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int pack_vector(int);
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void output_base(void);
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void output_table(void);
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void output_check(void);
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void output_ctable(void);
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int is_C_identifier(char *);
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void output_defines(void);
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void output_stored_text(void);
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void output_debug(void);
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void output_stype(void);
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void output_trailing_text(void);
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void output_semantic_actions(void);
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void free_itemsets(void);
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void free_shifts(void);
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void free_reductions(void);
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void write_section(char *section_name);
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/* reader.c */
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int cachec(int);
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char *get_line(void);
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char *dup_line(void);
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char *skip_comment(void);
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int nextc(void);
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int keyword(void);
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void copy_ident(void);
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void copy_string(int, FILE *, FILE *);
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void copy_comment(FILE *, FILE *);
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void copy_text(void);
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void copy_union(void);
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int hexval(int);
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bucket *get_literal(void);
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int is_reserved(char *);
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bucket *get_name(void);
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int get_number(void);
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char *get_tag(void);
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void declare_tokens(int);
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void declare_types(void);
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void declare_start(void);
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void read_declarations(void);
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void initialize_grammar(void);
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void expand_items(void);
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void expand_rules(void);
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void advance_to_start(void);
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void start_rule(bucket *, int);
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void end_rule(void);
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void insert_empty_rule(void);
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void add_symbol(void);
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void copy_action(void);
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int mark_symbol(void);
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void read_grammar(void);
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void free_tags(void);
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void pack_names(void);
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void check_symbols(void);
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void pack_symbols(void);
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void pack_grammar(void);
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void print_grammar(void);
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void reader(void);
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/* readskel.c */
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void read_skel(char *);
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/* symtab.c */
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int hash(char *);
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bucket *make_bucket(char *);
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bucket *lookup(char *);
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void create_symbol_table(void);
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void free_symbol_table(void);
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void free_symbols(void);
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/* verbose.c */
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void verbose(void);
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void log_unused(void);
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void log_conflicts(void);
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void print_state(int);
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void print_conflicts(int);
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void print_core(int);
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void print_nulls(int);
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void print_actions(int);
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void print_shifts(action *);
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void print_reductions(action *, int);
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void print_gotos(int);
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/* warshall.c */
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void transitive_closure(unsigned *, int);
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void reflexive_transitive_closure(unsigned *, int);
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