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yap-6.3/H/yapio.h
2011-06-12 17:23:10 +01:00

388 lines
8.9 KiB
C

/*************************************************************************
* *
* 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 <stdio.h>
#include <wchar.h>
#include "SWI-Stream.h"
#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 defined(_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 defined(_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
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;
/* ricardo
typedef enum TokenKinds {
Name_tok,
Number_tok,
Var_tok,
String_tok,
WString_tok,
Ponctuation_tok,
Error_tok,
eot_tok
} tkinds;
typedef struct TOKEN {
enum TokenKinds Tok;
Term TokInfo;
int TokPos;
struct TOKEN *TokNext;
} TokEntry;
#define Ord(X) ((enum TokenKinds) (X))
#define NextToken GNextToken( PASS_REGS1 )
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
/* info on aliases */
typedef struct AliasDescS {
Atom name;
int alias_stream;
} * AliasDesc;
/************ SWI compatible support for different encodings ************/
#ifndef _PL_STREAM_H
typedef enum {
ENC_OCTET = 0,
ENC_ISO_LATIN1 = 1,
ENC_ISO_ASCII = 2,
ENC_ISO_ANSI = 4,
ENC_ISO_UTF8 = 8,
ENC_UNICODE_BE = 16,
ENC_UNICODE_LE = 32,
ENC_ISO_UTF32_BE = 64,
ENC_ISO_UTF32_LE = 128
} encoding_t;
#else
#define ENC_ISO_LATIN1 ENC_ISO_LATIN_1
#define ENC_ISO_UTF32_BE ENC_UNKNOWN //bogus
#define ENC_ISO_UTF32_LE ENC_WCHAR // bogus
#define ENC_ISO_UTF8 ENC_UTF8
#define ENC_ISO_ASCII ENC_ASCII
#define ENC_ISO_ANSI ENC_ANSI
typedef IOENC encoding_t;
#endif
#define MAX_ISO_LATIN1 255
/****************** character definition table **************************/
#define NUMBER_OF_CHARS 256
extern char *Yap_chtype;
EXTERN inline int STD_PROTO(chtype,(Int));
int STD_PROTO(Yap_wide_chtype,(Int));
EXTERN inline int
chtype(Int ch)
{
if (ch < NUMBER_OF_CHARS)
return Yap_chtype[ch];
return Yap_wide_chtype(ch);
}
/* parser stack, used to be AuxSp, now is ASP */
#define ParserAuxSp LOCAL_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,(struct io_stream *, int, Term *));
void STD_PROTO(Yap_clean_tokenizer,(TokEntry *, VarEntry *, VarEntry *,Term));
Term STD_PROTO(Yap_scan_num,(struct io_stream *));
char STD_PROTO(*Yap_AllocScannerMemory,(unsigned int));
/* routines in iopreds.c */
FILE *STD_PROTO(Yap_FileDescriptorFromStream,(Term));
Int STD_PROTO(Yap_FirstLineInParse,(void));
int STD_PROTO(Yap_CheckIOStream,(Term, char *));
#if defined(YAPOR) || defined(THREADS)
void STD_PROTO(Yap_LockStream,(struct io_stream *));
void STD_PROTO(Yap_UnLockStream,(struct io_stream *));
#else
#define Yap_LockStream(X)
#define Yap_UnLockStream(X)
#endif
Int STD_PROTO(Yap_GetStreamFd,(int));
void STD_PROTO(Yap_CloseStreams,(int));
void STD_PROTO(Yap_FlushStreams,(void));
void STD_PROTO(Yap_CloseStream,(int));
int STD_PROTO(Yap_PlGetchar,(void));
int STD_PROTO(Yap_PlGetWchar,(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));
int STD_PROTO(Yap_GetFreeStreamDForReading,(void));
Term STD_PROTO(Yap_WStringToList,(wchar_t *));
Term STD_PROTO(Yap_WStringToListOfAtoms,(wchar_t *));
Atom STD_PROTO(Yap_LookupWideAtom,(wchar_t *));
#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 0x01
#define Ignore_ops_f 0x02
#define Handle_vars_f 0x04
#define Use_portray_f 0x08
#define To_heap_f 0x10
#define Unfold_cyclics_f 0x20
#define Use_SWI_Stream_f 0x40
/* grow.c */
int STD_PROTO(Yap_growheap_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
int STD_PROTO(Yap_growstack_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
int STD_PROTO(Yap_growtrail_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
#ifdef HAVE_ERRNO_H
#include <errno.h>
#else
extern int errno;
#endif
#ifdef DEBUG
#if COROUTINING
extern int Yap_Portray_delays;
#endif
#endif
EXTERN inline UInt STD_PROTO(HashFunction, (unsigned char *));
EXTERN inline UInt STD_PROTO(WideHashFunction, (wchar_t *));
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;
*/
}
EXTERN inline UInt
WideHashFunction(wchar_t *CHP)
{
UInt hash = 5381;
UInt c;
while ((c = *CHP++) != '\0') {
hash = hash * 33 ^ c;
}
return hash;
}
#define FAIL_ON_PARSER_ERROR 0
#define QUIET_ON_PARSER_ERROR 1
#define CONTINUE_ON_PARSER_ERROR 2
#define EXCEPTION_ON_PARSER_ERROR 3