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