433 lines
10 KiB
C
433 lines
10 KiB
C
/*************************************************************************
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* *
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* YAP Prolog %W% %G%
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-2003 *
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* *
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**************************************************************************
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* *
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* File: yapio.h *
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* Last rev: 22/1/03 *
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* mods: *
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* comments: Input/Output information *
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* *
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*************************************************************************/
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#ifdef SIMICS
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#undef HAVE_LIBREADLINE
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#endif
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#include <stdio.h>
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#include <wchar.h>
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#ifndef YAP_STDIO
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#define YP_printf printf
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#define YP_putchar putchar
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#define YP_getc getc
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#define YP_fgetc fgetc
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#define YP_getchar getchar
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#define YP_fgets fgets
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#define YP_clearerr clearerr
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#define YP_feof feof
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#define YP_ferror ferror
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#if defined(_MSC_VER) || defined(__MINGW32__)
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#define YP_fileno _fileno
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#else
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#define YP_fileno fileno
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#endif
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#define YP_fopen fopen
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#define YP_fclose fclose
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#define YP_ftell ftell
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#define YP_fseek fseek
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#define YP_setbuf setbuf
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#define YP_fputs fputs
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#define YP_ungetc ungetc
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#define YP_fdopen fdopen
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#define init_yp_stdio()
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#if defined(_MSC_VER) || defined(__MINGW32__)
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#define open _open
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#define close _close
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#define popen _popen
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#define pclose _pclose
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#define read _read
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#define write _write
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#define isatty _isatty
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#define putenv(S) _putenv(S)
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#define chdir(P) _chdir(P)
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#define getcwd(B,S) _getcwd(B,S)
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#endif
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#define YP_FILE FILE
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extern YP_FILE *Yap_stdin;
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extern YP_FILE *Yap_stdout;
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extern YP_FILE *Yap_stderr;
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int STD_PROTO(YP_putc,(int, int));
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#else
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#ifdef putc
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#undef putc
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#undef getc
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#undef putchar
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#undef getchar
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#undef stdin
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#undef stdout
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#undef stderr
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#endif
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#define printf ERR_printf
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#define fprintf ERR_fprintf
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#define putchar ERR_putchar
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#define putc ERR_putc
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#define getc ERR_getc
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#define fgetc ERR_fgetc
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#define getchar ERR_getchar
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#define fgets ERR_fgets
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#define clearerr ERR_clearerr
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#define feof ERR_feof
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#define ferror ERR_ferror
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#define fileno ERR_fileno
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#define fopen ERR_fopen
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#define fclose ERR_fclose
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#define fflush ERR_fflush
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/* flags for files in IOSTREAM struct */
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#define _YP_IO_WRITE 1
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#define _YP_IO_READ 2
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#define _YP_IO_ERR 0x04
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#define _YP_IO_EOF 0x08
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#define _YP_IO_FILE 0x10
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#define _YP_IO_SOCK 0x20
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typedef struct IOSTREAM {
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int check;
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int fd; /* file descriptor */
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int flags;
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int cnt;
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int buflen;
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char buf[2];
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char *ptr;
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char *base;
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int (*close)(int fd); /* close file */
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int (*read)(int fd, char *b, int n); /* read bytes */
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int (*write)(int fd, char *b, int n);/* write bytes */
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} YP_FILE;
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#define YP_stdin &yp_iob[0]
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#define YP_stdout &yp_iob[1]
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#define YP_stderr &yp_iob[2]
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#define YP_getc(f) (--(f)->cnt < 0 ? YP_fillbuf(f) : *((unsigned char *) ((f)->ptr++)))
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#define YP_fgetc(f) YP_fgetc(f)
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#define YP_putc(c,f) (--(f)->cnt < 0 ? YP_flushbuf(c,f) : (unsigned char) (*(f)->ptr++ = (char) c))
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#define YP_putchar(cc) YP_putc(cc,YP_stdout)
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#define YP_getchar() YP_getc(YP_stdin)
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int YP_fillbuf(YP_FILE *f);
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int YP_flushbuf(int c, YP_FILE *f);
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int YP_printf(char *, ...);
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int YP_fprintf(YP_FILE *, char *, ...);
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char* YP_fgets(char *, int, YP_FILE *);
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char* YP_gets(char *);
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YP_FILE *YP_fopen(char *, char *);
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int YP_fclose(YP_FILE *);
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int YP_fileno(YP_FILE *);
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int YP_fflush(YP_FILE *);
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int YP_feof(YP_FILE *);
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int YP_ftell(YP_FILE *);
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int YP_fseek(YP_FILE *, int, int);
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int YP_clearerr(YP_FILE *);
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void init_yp_stdio(void);
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int YP_fputs(char *s, YP_FILE *f);
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int YP_puts(char *s);
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int YP_setbuf(YP_FILE *f, char *buf);
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#define YP_MAX_FILES 40
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extern YP_FILE yp_iob[YP_MAX_FILES];
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#endif /* YAP_STDIO */
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typedef YP_FILE *YP_File;
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enum TokenKinds {
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Name_tok,
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Number_tok,
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Var_tok,
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String_tok,
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WString_tok,
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Ponctuation_tok,
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Error_tok,
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eot_tok
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};
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typedef struct TOKEN {
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unsigned char Tok;
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Term TokInfo;
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int TokPos;
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struct TOKEN *TokNext;
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} TokEntry;
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#define Ord(X) ((int) (X))
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#define NextToken GNextToken()
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typedef struct VARSTRUCT {
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Term VarAdr;
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CELL hv;
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struct VARSTRUCT *VarLeft, *VarRight;
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char VarRep[1];
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} VarEntry;
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/* Character types for tokenizer and write.c */
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#define UC 1 /* Upper case */
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#define UL 2 /* Underline */
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#define LC 3 /* Lower case */
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#define NU 4 /* digit */
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#define QT 5 /* single quote */
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#define DC 6 /* double quote */
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#define SY 7 /* Symbol character */
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#define SL 8 /* Solo character */
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#define BK 9 /* Brackets & friends */
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#define BS 10 /* Blank */
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#define EF 11 /* End of File marker */
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#define CC 12 /* comment char % */
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#define EOFCHAR EOF
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#if USE_SOCKET
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/****************** defines for sockets *********************************/
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typedef enum{ /* in YAP, sockets may be in one of 4 possible status */
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new_socket,
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server_socket,
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client_socket,
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server_session_socket,
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closed_socket
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} socket_info;
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typedef enum{ /* we accept two domains for the moment, IPV6 may follow */
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af_inet, /* IPV4 */
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af_unix /* or AF_FILE */
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} socket_domain;
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Term STD_PROTO(Yap_InitSocketStream,(int, socket_info, socket_domain));
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int STD_PROTO(Yap_CheckStream,(Term, int, char *));
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int STD_PROTO(Yap_CheckSocketStream,(Term, char *));
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socket_domain STD_PROTO(Yap_GetSocketDomain,(int));
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socket_info STD_PROTO(Yap_GetSocketStatus,(int));
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void STD_PROTO(Yap_UpdateSocketStream,(int, socket_info, socket_domain));
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/* routines in ypsocks.c */
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Int STD_PROTO(Yap_CloseSocket,(int, socket_info, socket_domain));
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#endif /* USE_SOCKET */
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/* info on aliases */
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typedef struct AliasDescS {
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Atom name;
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int alias_stream;
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} * AliasDesc;
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/************ SWI compatible support for different encodings ************/
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typedef enum {
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ENC_OCTET = 0,
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ENC_ISO_LATIN1 = 1,
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ENC_ISO_ASCII = 2,
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ENC_ISO_ANSI = 4,
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ENC_ISO_UTF8 = 8,
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ENC_UNICODE_BE = 16,
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ENC_UNICODE_LE = 32
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} encoding_t;
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#define MAX_ISO_LATIN1 255
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/****************** character definition table **************************/
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#define NUMBER_OF_CHARS 256
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extern char *Yap_chtype;
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EXTERN inline int STD_PROTO(chtype,(int));
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EXTERN inline int
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chtype(int ch)
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{
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if (ch < 256)
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return Yap_chtype[ch];
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return SL;
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}
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/* parser stack, used to be AuxSp, now is ASP */
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#define ParserAuxSp ScannerStack
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/* routines in parser.c */
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VarEntry STD_PROTO(*Yap_LookupVar,(char *));
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Term STD_PROTO(Yap_VarNames,(VarEntry *,Term));
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/* routines in scanner.c */
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TokEntry STD_PROTO(*Yap_tokenizer,(int, Term *));
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void STD_PROTO(Yap_clean_tokenizer,(TokEntry *, VarEntry *, VarEntry *));
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Term STD_PROTO(Yap_scan_num,(int (*)(int)));
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char STD_PROTO(*Yap_AllocScannerMemory,(unsigned int));
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/* routines in iopreds.c */
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FILE *STD_PROTO(Yap_FileDescriptorFromStream,(Term));
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Int STD_PROTO(Yap_FirstLineInParse,(void));
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int STD_PROTO(Yap_CheckIOStream,(Term, char *));
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#if defined(YAPOR) || defined(THREADS)
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void STD_PROTO(Yap_LockStream,(int));
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void STD_PROTO(Yap_UnLockStream,(int));
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#else
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#define Yap_LockStream(X)
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#define Yap_UnLockStream(X)
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#endif
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int STD_PROTO(Yap_GetStreamFd,(int));
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void STD_PROTO(Yap_CloseStreams,(int));
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void STD_PROTO(Yap_FlushStreams,(void));
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void STD_PROTO(Yap_CloseStream,(int));
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int STD_PROTO(Yap_PlGetchar,(void));
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int STD_PROTO(Yap_PlGetWchar,(void));
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int STD_PROTO(Yap_PlFGetchar,(void));
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int STD_PROTO(Yap_GetCharForSIGINT,(void));
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int STD_PROTO(Yap_StreamToFileNo,(Term));
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Term STD_PROTO(Yap_OpenStream,(FILE *,char *,Term,int));
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Term STD_PROTO(Yap_StringToTerm,(char *,Term *));
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Term STD_PROTO(Yap_TermToString,(Term,char *,unsigned int,int));
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int STD_PROTO(Yap_GetFreeStreamD,(void));
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int STD_PROTO(Yap_GetFreeStreamDForReading,(void));
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Term STD_PROTO(Yap_WStringToList,(wchar_t *));
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Term STD_PROTO(Yap_WStringToListOfAtoms,(wchar_t *));
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Atom STD_PROTO(Yap_LookupWideAtom,(wchar_t *));
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extern int
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Yap_c_input_stream,
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Yap_c_output_stream,
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Yap_c_error_stream;
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#define YAP_INPUT_STREAM 0x01
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#define YAP_OUTPUT_STREAM 0x02
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#define YAP_APPEND_STREAM 0x04
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#define YAP_PIPE_STREAM 0x08
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#define YAP_TTY_STREAM 0x10
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#define YAP_POPEN_STREAM 0x20
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#define YAP_BINARY_STREAM 0x40
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#define YAP_SEEKABLE_STREAM 0x80
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#define Quote_illegal_f 1
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#define Ignore_ops_f 2
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#define Handle_vars_f 4
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#define Use_portray_f 8
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#define To_heap_f 16
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#define Unfold_cyclics_f 32
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/* write.c */
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void STD_PROTO(Yap_plwrite,(Term,int (*)(int, wchar_t), int, int));
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/* grow.c */
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int STD_PROTO(Yap_growheap_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
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int STD_PROTO(Yap_growstack_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
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int STD_PROTO(Yap_growtrail_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#else
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extern int errno;
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#endif
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#ifdef DEBUG
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#if COROUTINING
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extern int Yap_Portray_delays;
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#endif
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#endif
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EXTERN inline UInt STD_PROTO(HashFunction, (unsigned char *));
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EXTERN inline UInt STD_PROTO(WideHashFunction, (wchar_t *));
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EXTERN inline UInt
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HashFunction(unsigned char *CHP)
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{
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/* djb2 */
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UInt hash = 5381;
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UInt c;
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while ((c = *CHP++) != '\0') {
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/* hash = ((hash << 5) + hash) + c; hash * 33 + c */
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hash = hash * 33 ^ c;
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}
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return hash;
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/*
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UInt OUT=0, i = 1;
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while(*CHP != '\0') { OUT += (UInt)(*CHP++); }
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return OUT;
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*/
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}
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EXTERN inline UInt
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WideHashFunction(wchar_t *CHP)
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{
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UInt hash = 5381;
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UInt c;
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while ((c = *CHP++) != '\0') {
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hash = hash * 33 ^ c;
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}
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return hash;
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}
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#define FAIL_ON_PARSER_ERROR 0
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#define QUIET_ON_PARSER_ERROR 1
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#define CONTINUE_ON_PARSER_ERROR 2
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#define EXCEPTION_ON_PARSER_ERROR 3
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#ifdef THREADS
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#define Yap_IOBotch Yap_thread_gl[worker_id].io_botch
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#define Yap_tokptr Yap_thread_gl[worker_id].tokptr
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#define Yap_toktide Yap_thread_gl[worker_id].toktide
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#define Yap_VarTable Yap_thread_gl[worker_id].var_table
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#define Yap_AnonVarTable Yap_thread_gl[worker_id].anon_var_table
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#define Yap_eot_before_eof Yap_thread_gl[worker_id].eot_before_eof
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#define Yap_FileNameBuf Yap_thread_gl[worker_id].file_name_buf
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#define Yap_FileNameBuf2 Yap_thread_gl[worker_id].file_name_buf2
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#else
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extern jmp_buf Yap_IOBotch;
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/*************** variables concerned with parsing *********************/
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extern TokEntry *Yap_tokptr, *Yap_toktide;
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extern VarEntry *Yap_VarTable, *Yap_AnonVarTable;
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extern int Yap_eot_before_eof;
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extern char Yap_FileNameBuf[YAP_FILENAME_MAX], Yap_FileNameBuf2[YAP_FILENAME_MAX];
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#endif
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#ifdef DEBUG
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extern YP_FILE *Yap_logfile;
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#endif
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#if USE_SOCKET
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extern int Yap_sockets_io;
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#endif
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