mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-22 21:23:04 +01:00
519 lines
12 KiB
C
519 lines
12 KiB
C
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <stdio.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 ((int)0x7FFFFFFF)
|
|
#define MINSHORT ((int)0x80000000)
|
|
#define MAXTABLE 200000
|
|
|
|
#ifdef __MSDOS__
|
|
#define BITS_PER_WORD 16
|
|
#define LOG2_BPW 4
|
|
#else /* Real computers... */
|
|
#define BITS_PER_WORD 32
|
|
#define LOG2_BPW 5
|
|
#endif
|
|
#define BITS_PER_WORD_1 (BITS_PER_WORD-1)
|
|
|
|
#define WORDSIZE(n) (((n)+(BITS_PER_WORD_1))/BITS_PER_WORD)
|
|
#define BIT(r, n) ((((r)[(n)>>LOG2_BPW])>>((n)&BITS_PER_WORD_1))&1)
|
|
#define SETBIT(r, n) ((r)[(n)>>LOG2_BPW]|=((unsigned)1<<((n)&BITS_PER_WORD_1)))
|
|
|
|
/* VM: this is a 32-bit replacement for original 16-bit short */
|
|
typedef int Yshort;
|
|
|
|
|
|
/* 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 DEFINES_SUFFIX "_tab.h"
|
|
#define OUTPUT_SUFFIX "_tab.c"
|
|
#define CODE_SUFFIX "_code.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
|
|
|
|
|
|
/* symbol classes */
|
|
|
|
#define UNKNOWN 0
|
|
#define TERM 1
|
|
#define NONTERM 2
|
|
#define ACTION 3
|
|
#define ARGUMENT 4
|
|
|
|
|
|
/* 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((unsigned)(k),(unsigned)(n)))
|
|
#define FREE(x) (free((char*)(x)))
|
|
#define MALLOC(n) (malloc((unsigned)(n)))
|
|
#define NEW(t) ((t*)allocate(sizeof(t)))
|
|
#define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t))))
|
|
#define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n)))
|
|
#define RENEW(p,n,t) ((t*)realloc((char*)(p),(unsigned)((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;
|
|
char **argnames;
|
|
char **argtags;
|
|
Yshort args;
|
|
Yshort value;
|
|
Yshort index;
|
|
Yshort 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;
|
|
Yshort number;
|
|
Yshort accessing_symbol;
|
|
Yshort nitems;
|
|
Yshort items[1];
|
|
};
|
|
|
|
|
|
/* the structure used to record shifts */
|
|
|
|
typedef struct shifts shifts;
|
|
struct shifts
|
|
{
|
|
struct shifts *next;
|
|
Yshort number;
|
|
Yshort nshifts;
|
|
Yshort shift[1];
|
|
};
|
|
|
|
|
|
/* the structure used to store reductions */
|
|
|
|
typedef struct reductions reductions;
|
|
struct reductions
|
|
{
|
|
struct reductions *next;
|
|
Yshort number;
|
|
Yshort nreds;
|
|
Yshort rules[1];
|
|
};
|
|
|
|
|
|
/* the structure used to represent parser actions */
|
|
|
|
typedef struct action action;
|
|
struct action
|
|
{
|
|
struct action *next;
|
|
Yshort symbol;
|
|
Yshort number;
|
|
Yshort prec;
|
|
char action_code;
|
|
char assoc;
|
|
char suppressed;
|
|
};
|
|
|
|
struct section {
|
|
char *name;
|
|
char **ptr;
|
|
};
|
|
|
|
extern struct section section_list[];
|
|
|
|
|
|
/* global variables */
|
|
|
|
extern char dflag;
|
|
extern char lflag;
|
|
extern char rflag;
|
|
extern char tflag;
|
|
extern char vflag;
|
|
|
|
extern char *myname;
|
|
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 *action_file_name;
|
|
extern char *code_file_name;
|
|
extern char *defines_file_name;
|
|
extern char *input_file_name;
|
|
extern char *output_file_name;
|
|
extern char *text_file_name;
|
|
extern char *union_file_name;
|
|
extern char *verbose_file_name;
|
|
|
|
extern FILE *inc_file;
|
|
extern char inc_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 Yshort *symbol_value;
|
|
extern Yshort *symbol_prec;
|
|
extern char *symbol_assoc;
|
|
|
|
extern Yshort *ritem;
|
|
extern Yshort *rlhs;
|
|
extern Yshort *rrhs;
|
|
extern Yshort *rprec;
|
|
extern char *rassoc;
|
|
|
|
extern Yshort **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 Yshort *accessing_symbol;
|
|
extern core **state_table;
|
|
extern shifts **shift_table;
|
|
extern reductions **reduction_table;
|
|
extern unsigned *LA;
|
|
extern Yshort *LAruleno;
|
|
extern Yshort *lookaheads;
|
|
extern Yshort *goto_map;
|
|
extern Yshort *from_state;
|
|
extern Yshort *to_state;
|
|
|
|
extern action **parser;
|
|
extern int SRtotal;
|
|
extern int RRtotal;
|
|
extern Yshort *SRconflicts;
|
|
extern Yshort *RRconflicts;
|
|
extern Yshort *defred;
|
|
extern Yshort *rules_used;
|
|
extern Yshort nunused;
|
|
extern Yshort final_state;
|
|
|
|
/* system variable */
|
|
#ifndef _MSC_VER
|
|
extern int errno;
|
|
#endif
|
|
|
|
/* global functions */
|
|
|
|
/* closure.c */
|
|
void set_EFF(void);
|
|
void set_first_derives(void);
|
|
void closure(Yshort *, int);
|
|
void finalize_closure(void);
|
|
void print_closure(int);
|
|
void print_EFF(void);
|
|
void print_first_derives(void);
|
|
|
|
/* error.c */
|
|
void fatal(char *);
|
|
void no_space(void);
|
|
void open_error(char *);
|
|
void unexpected_EOF(void);
|
|
void print_pos(char *, char *);
|
|
void error(int, char *, char *, char *, ...);
|
|
void syntax_error(int, char *, char *);
|
|
void unterminated_comment(int, char *, char *);
|
|
void unterminated_string(int, char *, char *);
|
|
void unterminated_text(int, char *, char *);
|
|
void unterminated_union(int, char *, char *);
|
|
void over_unionized(char *);
|
|
void illegal_tag(int, char *, char *);
|
|
void illegal_character(char *);
|
|
void used_reserved(char *);
|
|
void tokenized_start(char *);
|
|
void retyped_warning(char *);
|
|
void reprec_warning(char *);
|
|
void revalued_warning(char *);
|
|
void terminal_start(char *);
|
|
void restarted_warning(void);
|
|
void no_grammar(void);
|
|
void terminal_lhs(int);
|
|
void prec_redeclared(void);
|
|
void unterminated_action(int, char *, char *);
|
|
void unterminated_arglist(int, char *, char *);
|
|
void bad_formals(void);
|
|
void dollar_warning(int, int);
|
|
void dollar_error(int, char *, char *);
|
|
void untyped_lhs(void);
|
|
void untyped_rhs(int, char *);
|
|
void unknown_rhs(int);
|
|
void default_action_warning(void);
|
|
void undefined_goal(char *);
|
|
void undefined_symbol_warning(char *);
|
|
|
|
/* lalr.c */
|
|
void lalr(void);
|
|
void set_state_table(void);
|
|
void set_accessing_symbol(void);
|
|
void set_shift_table(void);
|
|
void set_reduction_table(void);
|
|
void set_maxrhs(void);
|
|
void initialize_LA(void);
|
|
void set_goto_map(void);
|
|
int map_goto(int, int);
|
|
void initialize_F(void);
|
|
void build_relations(void);
|
|
void add_lookback_edge(int, int, int);
|
|
Yshort **transpose(Yshort **, int);
|
|
void compute_FOLLOWS(void);
|
|
void compute_lookaheads(void);
|
|
void digraph(Yshort **);
|
|
void traverse(int);
|
|
|
|
/* lr0.c */
|
|
void allocate_itemsets(void);
|
|
void allocate_storage(void);
|
|
void append_states(void);
|
|
void free_storage(void);
|
|
void generate_states(void);
|
|
int get_state(int);
|
|
void initialize_states(void);
|
|
void new_itemsets(void);
|
|
core *new_state(int);
|
|
void show_cores(void);
|
|
void show_ritems(void);
|
|
void show_rrhs(void);
|
|
void show_shifts(void);
|
|
void save_shifts(void);
|
|
void save_reductions(void);
|
|
void set_derives(void);
|
|
void free_derives(void);
|
|
void print_derives(void);
|
|
void set_nullable(void);
|
|
void free_nullable(void);
|
|
void lr0(void);
|
|
|
|
/* main.c */
|
|
void done(int);
|
|
void onintr(int);
|
|
void set_signals(void);
|
|
void usage(void);
|
|
void getargs(int, char **);
|
|
char *allocate(unsigned);
|
|
void create_file_names(void);
|
|
void open_files(void);
|
|
int main(int, char **);
|
|
|
|
/* mkpar.c */
|
|
void make_parser(void);
|
|
action *parse_actions(int);
|
|
action *get_shifts(int);
|
|
action *add_reductions(int, action *);
|
|
action *add_reduce(action *, int, int);
|
|
void find_final_state(void);
|
|
void unused_rules(void);
|
|
void remove_conflicts(void);
|
|
void total_conflicts(void);
|
|
int sole_reduction(int);
|
|
void defreds(void);
|
|
void free_action_row(action *);
|
|
void free_parser(void);
|
|
|
|
/* output.c */
|
|
void output(void);
|
|
void output_rule_data(void);
|
|
void output_yydefred(void);
|
|
void output_actions(void);
|
|
int find_conflict_base(int);
|
|
void token_actions(void);
|
|
void goto_actions(void);
|
|
int default_goto(int);
|
|
void save_column(int, int);
|
|
void sort_actions(void);
|
|
void pack_table(void);
|
|
int matching_vector(int);
|
|
int pack_vector(int);
|
|
void output_base(void);
|
|
void output_table(void);
|
|
void output_check(void);
|
|
void output_ctable(void);
|
|
int is_C_identifier(char *);
|
|
void output_defines(void);
|
|
void output_stored_text(void);
|
|
void output_debug(void);
|
|
void output_stype(void);
|
|
void output_trailing_text(void);
|
|
void output_semantic_actions(void);
|
|
void free_itemsets(void);
|
|
void free_shifts(void);
|
|
void free_reductions(void);
|
|
void write_section(char *section_name);
|
|
|
|
|
|
/* reader.c */
|
|
int cachec(int);
|
|
char *get_line(void);
|
|
char *dup_line(void);
|
|
char *skip_comment(void);
|
|
int nextc(void);
|
|
int keyword(void);
|
|
void copy_ident(void);
|
|
void copy_string(int, FILE *, FILE *);
|
|
void copy_comment(FILE *, FILE *);
|
|
void copy_text(void);
|
|
void copy_union(void);
|
|
int hexval(int);
|
|
bucket *get_literal(void);
|
|
int is_reserved(char *);
|
|
bucket *get_name(void);
|
|
int get_number(void);
|
|
char *get_tag(void);
|
|
void declare_tokens(int);
|
|
void declare_types(void);
|
|
void declare_start(void);
|
|
void read_declarations(void);
|
|
void initialize_grammar(void);
|
|
void expand_items(void);
|
|
void expand_rules(void);
|
|
void advance_to_start(void);
|
|
void start_rule(bucket *, int);
|
|
void end_rule(void);
|
|
void insert_empty_rule(void);
|
|
void add_symbol(void);
|
|
void copy_action(void);
|
|
int mark_symbol(void);
|
|
void read_grammar(void);
|
|
void free_tags(void);
|
|
void pack_names(void);
|
|
void check_symbols(void);
|
|
void pack_symbols(void);
|
|
void pack_grammar(void);
|
|
void print_grammar(void);
|
|
void reader(void);
|
|
|
|
/* readskel.c */
|
|
void read_skel(char *);
|
|
|
|
/* symtab.c */
|
|
int hash(char *);
|
|
bucket *make_bucket(char *);
|
|
bucket *lookup(char *);
|
|
void create_symbol_table(void);
|
|
void free_symbol_table(void);
|
|
void free_symbols(void);
|
|
|
|
/* verbose.c */
|
|
void verbose(void);
|
|
void log_unused(void);
|
|
void log_conflicts(void);
|
|
void print_state(int);
|
|
void print_conflicts(int);
|
|
void print_core(int);
|
|
void print_nulls(int);
|
|
void print_actions(int);
|
|
void print_shifts(action *);
|
|
void print_reductions(action *, int);
|
|
void print_gotos(int);
|
|
|
|
/* warshall.c */
|
|
void transitive_closure(unsigned *, int);
|
|
void reflexive_transitive_closure(unsigned *, int);
|