355 lines
8.0 KiB
C
355 lines
8.0 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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#include "SWI-Stream.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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#define YP_FILE FILE
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int 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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/* ricardo
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typedef 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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} tkinds;
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typedef struct TOKEN {
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enum TokenKinds 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) ((enum TokenKinds) (X))
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#define NextToken GNextToken( PASS_REGS1 )
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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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*/
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#ifndef _PL_WRITE_
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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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#endif
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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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#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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#include "inline-only.h"
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INLINE_ONLY EXTERN inline int chtype(Int);
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int Yap_wide_chtype(Int);
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INLINE_ONLY EXTERN inline int
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chtype(Int ch)
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{
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if (ch < NUMBER_OF_CHARS)
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return Yap_chtype[ch];
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return Yap_wide_chtype(ch);
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}
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/* parser stack, used to be AuxSp, now is ASP */
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#define ParserAuxSp LOCAL_ScannerStack
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/* routines in parser.c */
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VarEntry *Yap_LookupVar(char *);
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Term Yap_VarNames(VarEntry *,Term);
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Term Yap_Variables(VarEntry *,Term);
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Term Yap_Singletons(VarEntry *,Term);
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/* routines in scanner.c */
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TokEntry *Yap_tokenizer(struct io_stream *, int, Term *, void *rd);
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void Yap_clean_tokenizer(TokEntry *, VarEntry *, VarEntry *,Term);
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Term Yap_scan_num(struct io_stream *);
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char *Yap_AllocScannerMemory(unsigned int);
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/* routines in iopreds.c */
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FILE *Yap_FileDescriptorFromStream(Term);
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Int Yap_FirstLineInParse(void);
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int Yap_CheckIOStream(Term, char *);
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#if defined(YAPOR) || defined(THREADS)
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void Yap_LockStream(struct io_stream *);
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void Yap_UnLockStream(struct io_stream *);
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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 Yap_GetStreamFd(int);
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void Yap_CloseStreams(int);
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void Yap_FlushStreams(void);
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void Yap_CloseStream(int);
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int Yap_PlGetchar(void);
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int Yap_PlGetWchar(void);
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int Yap_PlFGetchar(void);
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int Yap_GetCharForSIGINT(void);
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Int Yap_StreamToFileNo(Term);
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Term Yap_OpenStream(FILE *,char *,Term,int);
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char *Yap_TermToString(Term t, char *s, size_t sz, size_t *length, int *encoding, int flags);
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int Yap_GetFreeStreamD(void);
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int Yap_GetFreeStreamDForReading(void);
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Term Yap_WStringToList(wchar_t *);
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Term Yap_WStringToListOfAtoms(wchar_t *);
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Atom Yap_LookupWideAtom( const wchar_t * );
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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 0x01
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#define Ignore_ops_f 0x02
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#define Handle_vars_f 0x04
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#define Use_portray_f 0x08
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#define To_heap_f 0x10
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#define Unfold_cyclics_f 0x20
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#define Use_SWI_Stream_f 0x40
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#define BackQuote_String_f 0x80
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#define AttVar_None_f 0x100
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#define AttVar_Dots_f 0x200
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#define AttVar_Portray_f 0x400
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#define Blob_Portray_f 0x800
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/* grow.c */
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int Yap_growheap_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
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int Yap_growstack_in_parser(tr_fr_ptr *, TokEntry **, VarEntry **);
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int 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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INLINE_ONLY EXTERN UInt inline HashFunction(unsigned char *);
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INLINE_ONLY EXTERN UInt inline WideHashFunction(wchar_t *);
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INLINE_ONLY 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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INLINE_ONLY EXTERN UInt inline
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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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