398 lines
8.7 KiB
C
398 lines
8.7 KiB
C
#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 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
|
|
|
|
|
|
/* 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((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)))
|
|
|
|
|
|
/* 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 *myname;
|
|
extern char *cptr;
|
|
extern char *line;
|
|
extern int lineno;
|
|
extern int outline;
|
|
|
|
extern char *banner[];
|
|
extern char *tables[];
|
|
#if defined (TRIPLISH)
|
|
extern char *includefiles[];
|
|
#endif
|
|
#if defined(KYLEP_CHANGE)
|
|
extern char *header1[];
|
|
extern char *header2[];
|
|
extern char *header3[];
|
|
#if defined (TRIPLISH)
|
|
extern char *header4[];
|
|
#endif
|
|
#else
|
|
extern char *header[];
|
|
#endif
|
|
extern char *body[];
|
|
extern char *trailer[];
|
|
#if defined (TRIPLISH)
|
|
extern char *TriplishBody[];
|
|
extern char *TriplishTrailer[];
|
|
#endif
|
|
|
|
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 *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 RRtotal;
|
|
extern short *SRconflicts;
|
|
extern short *RRconflicts;
|
|
extern short *defred;
|
|
extern short *rules_used;
|
|
extern short nunused;
|
|
extern short final_state;
|
|
|
|
/* global functions */
|
|
|
|
extern char *allocate();
|
|
extern bucket *lookup();
|
|
extern bucket *make_bucket();
|
|
|
|
|
|
/* system variables */
|
|
|
|
extern int errno;
|
|
|
|
|
|
/* system functions */
|
|
#if defined(KYLEP_CHANGE)
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <io.h>
|
|
|
|
#define mktemp _mktemp
|
|
#define unlink _unlink
|
|
#else
|
|
extern void free();
|
|
extern char *calloc();
|
|
extern char *malloc();
|
|
extern char *realloc();
|
|
extern char *strcpy();
|
|
#endif // KYLEP_CHANGE
|
|
|
|
#if defined(KYLEP_CHANGE)
|
|
|
|
extern char *baseclass;
|
|
extern char *ctorargs;
|
|
|
|
/* BYACC prototypes, with type safety */
|
|
void reflexive_transitive_closure( unsigned * R, int n );
|
|
void set_first_derives();
|
|
void closure( short * nucleus, int n );
|
|
void finalize_closure();
|
|
|
|
/* From main.c */
|
|
int done( int k );
|
|
|
|
/* From error.c */
|
|
void no_space();
|
|
void fatal( char * msg );
|
|
void open_error( char * filename );
|
|
void unterminated_comment( int c_lineno, char * c_line, char * c_cptr );
|
|
void unterminated_string( int s_lineno, char * s_line, char * s_cptr );
|
|
void unterminated_text( int t_lineno, char * t_line, char * t_cptr );
|
|
void unterminated_union( int u_lineno, char * u_line, char * u_cptr );
|
|
void syntax_error( int st_lineno, char * st_line, char * st_cptr );
|
|
void unexpected_EOF();
|
|
void over_unionized( char * u_cptr );
|
|
void illegal_character( char * c_cptr );
|
|
void used_reserved( char * s );
|
|
void illegal_tag( int t_lineno, char * t_line, char * t_cptr );
|
|
void tokenized_start( char * s );
|
|
void retyped_warning( char * s );
|
|
void reprec_warning( char * s );
|
|
void revalued_warning( char * s );
|
|
void terminal_start( char * s );
|
|
void restarted_warning();
|
|
void no_grammar();
|
|
void terminal_lhs( int s_lineno );
|
|
void default_action_warning();
|
|
void dollar_warning( int a_lineno, int i );
|
|
void dollar_error( int a_lineno, char * a_line, char * a_cptr );
|
|
void untyped_lhs();
|
|
void unknown_rhs( int i );
|
|
void untyped_rhs( int i, char * s );
|
|
void unterminated_action( int a_lineno, char * a_line, char * a_cptr );
|
|
void prec_redeclared();
|
|
void undefined_goal( char * s );
|
|
void undefined_symbol_warning( char * s );
|
|
|
|
/* From reader.c */
|
|
void reader();
|
|
|
|
/* From lr0.c */
|
|
void lr0();
|
|
|
|
/* From lalr.c */
|
|
void lalr();
|
|
|
|
/* From mkpar.c */
|
|
void make_parser();
|
|
void free_parser();
|
|
|
|
/* From verbose.c */
|
|
void verbose();
|
|
|
|
/* From output.c */
|
|
void output();
|
|
|
|
/* From skeleton.c */
|
|
void write_section( char * section[], FILE * f );
|
|
|
|
/* From symtab.c */
|
|
void create_symbol_table();
|
|
void free_symbol_table();
|
|
void free_symbols();
|
|
|
|
#if defined (TRIPLISH)
|
|
enum eParser
|
|
{
|
|
eSQLParser,
|
|
eTriplishParser
|
|
};
|
|
#endif
|
|
|
|
#endif //KYLEP_CHANGE
|