1234 lines
34 KiB
C
1234 lines
34 KiB
C
/*************************************************************************
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* *
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* YAP Prolog *
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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 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: charcodes.c *
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* Last rev: 5/2/88 *
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* mods: *
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* comments: Character codes and character conversion *
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* *
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*************************************************************************/
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#ifdef SCCS
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static char SccsId[] = "%W% %G%";
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#endif
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/**
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* @file charsio.c
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* @author VITOR SANTOS COSTA <vsc@VITORs-MBP.lan>
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* @date Thu Nov 19 11:37:16 2015
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* @brief This file includes the definition of character-by-character related
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*IO.
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*
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*
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*/
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/** @defgroup CharIO Character-Based Input/Output
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* @ingroup InputOutput
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* @{
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* YAP implements most of the ISO-Prolog built-ins. Input/Output may be
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*performed on
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* the current stream or on a specified stream, and it may involve a:
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* + byte
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* + character code
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* + character atom
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*
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* Old-style operations, like get0/2 are still implemented.
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*
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*
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*/
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#include "Yap.h"
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#include "YapHeap.h"
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#include "YapText.h"
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#include "Yatom.h"
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#include "yapio.h"
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_STDARG_H
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#include <stdarg.h>
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#endif
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#ifdef _WIN32
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#if HAVE_IO_H
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/* Windows */
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#include <io.h>
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#endif
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#if HAVE_SOCKET
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#include <winsock2.h>
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#endif
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#include <windows.h>
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#ifndef S_ISDIR
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#define S_ISDIR(x) (((x)&_S_IFDIR) == _S_IFDIR)
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#endif
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#endif
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#include "iopreds.h"
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static Int get_code(USES_REGS1);
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static Int get_byte(USES_REGS1);
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// static Int past_eof( USES_REGS1);
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static Int put_code(USES_REGS1);
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static Int put_byte(USES_REGS1);
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static Int skip(USES_REGS1);
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static Int flush_output(USES_REGS1);
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/**
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* CharOfAtom: convert an atom into a single character.
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*
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* @param at the atom
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*
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* @return the char .
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*/
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INLINE_ONLY inline EXTERN Int CharOfAtom(Atom at) {
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int32_t val;
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get_utf8(at->UStrOfAE, 1, &val);
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return val;
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}
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int Yap_peekWideWithGetwc(int sno) {
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StreamDesc *s;
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s = GLOBAL_Stream + sno;
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int ch = fgetwc(s->file);
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ungetwc(ch, s->file);
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return ch;
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}
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int Yap_peekWithGetc(int sno) {
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StreamDesc *s;
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s = GLOBAL_Stream + sno;
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int ch = fgetc(s->file);
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ungetc(ch, s->file);
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return ch;
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}
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int Yap_peekWideWithSeek(int sno) {
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StreamDesc *s;
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s = GLOBAL_Stream + sno;
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Int pos = IntegerOfTerm(Yap_StreamPosition(sno));
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Int line = s->linecount;
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Int lpos = s->linepos;
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int ch = s->stream_wgetc(sno);
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if (ch == EOF) {
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if (s->file)
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clearerr(s->file);
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s->status &= ~Eof_Error_Stream_f;
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// do not try doing error processing
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} else {
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Yap_SetCurInpPos(sno, pos);
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s->charcount = pos;
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s->linecount = line;
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s->linepos = lpos;
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}
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return ch;
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}
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int Yap_peekWithSeek(int sno) {
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StreamDesc *s;
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s = GLOBAL_Stream + sno;
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Int pos = IntegerOfTerm(Yap_StreamPosition(sno));
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Int line = s->linecount;
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Int lpos = s->linepos;
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int ch = s->stream_getc(sno);
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if (ch == EOF) {
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if (s->file)
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clearerr(s->file);
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s->status &= ~Eof_Error_Stream_f;
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// do not try doing error processing
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} else {
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Yap_SetCurInpPos(sno, pos);
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s->charcount = pos;
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s->linecount = line;
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s->linepos = lpos;
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}
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return ch;
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}
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int Yap_popChar(int sno) {
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StreamDesc *s = GLOBAL_Stream + sno;
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s->buf.on = false;
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Yap_DefaultStreamOps(s);
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return s->buf.ch;
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}
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int Yap_peekWide(int sno) {
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StreamDesc *s = GLOBAL_Stream + sno;
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Int pos = s->charcount;
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Int line = s->linecount;
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Int lpos = s->linepos;
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int ch = s->stream_wgetc(sno);
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if (ch == EOF) {
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if (s->file)
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clearerr(s->file);
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s->status &= ~Eof_Error_Stream_f;
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// do not try doing error processing
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} else {
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s->buf.on = true;
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s->buf.ch = ch;
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s->charcount = pos;
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s->linecount = line;
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s->linepos = lpos;
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s->stream_wgetc = Yap_popChar;
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s->stream_getc = NULL;
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s->stream_peek = NULL;
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s->stream_wpeek = NULL;
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s->stream_getc = Yap_popChar;
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s->stream_wgetc = Yap_popChar;
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// Yap_SetCurInpPos(sno, pos);
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}
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return ch;
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}
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int Yap_peekChar(int sno) {
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StreamDesc *s = GLOBAL_Stream + sno;
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Int pos = s->charcount;
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Int line = s->linecount;
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Int lpos = s->linepos;
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int ch = s->stream_getc(sno);
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if (ch == EOF) {
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if (s->file)
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clearerr(s->file);
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s->status &= ~Eof_Error_Stream_f;
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// do not try doing error processing
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} else {
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s->buf.on = true;
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s->buf.ch = ch;
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s->charcount = pos;
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s->linecount = line;
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s->linepos = lpos;
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s->stream_getc = Yap_popChar;
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s->stream_wgetc = NULL;
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s->stream_peek = NULL;
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s->stream_wpeek = NULL;
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// Yap_SetCurInpPos(sno, pos);
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}
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return ch;
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}
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int Yap_peek(int sno) { return GLOBAL_Stream[sno].stream_wpeek(sno); }
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static int dopeek_byte(int sno) { return GLOBAL_Stream[sno].stream_peek(sno); }
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bool store_code(int ch, Term t USES_REGS) {
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Term t2 = Deref(t);
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bool rc = Yap_unify_constant(t2, MkIntegerTerm(ch));
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if (!rc && !IsVarTerm(t2)) {
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if (!IsIntegerTerm(t2)) {
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Yap_Error(TYPE_ERROR_INTEGER, t, "in output argument");
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} else if (IntegerOfTerm(t2) < 0) {
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Yap_Error(REPRESENTATION_ERROR_IN_CHARACTER_CODE, t,
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"in output argument");
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}
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}
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return rc;
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}
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/** @pred at_end_of_stream(+ _S_) is iso
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Succeed if the stream _S_ has stream position end-of-stream or
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past-end-of-stream. Note that _S_ must be a readable stream.
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*/
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static Int at_end_of_stream(USES_REGS1) { /* at_end_of_stream */
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/* the next character is a EOF */
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int sno = Yap_CheckStream(ARG1, Input_Stream_f, NULL);
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Int out;
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if (sno < 0)
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return (FALSE);
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out = GLOBAL_Stream[sno].status & Eof_Stream_f;
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if (!out) {
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if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
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out = (dopeek_byte(sno) < 0);
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} else {
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out = (Yap_peek(sno) < 0);
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}
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}
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return out;
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}
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/** @pred at_end_of_stream is iso
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Succeed if the current stream has stream position end-of-stream or
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past-end-of-stream.
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*/
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static Int at_end_of_stream_0(USES_REGS1) { /* at_end_of_stream */
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/* the next character is a EOF */
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Int out;
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int sno = LOCAL_c_input_stream;
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out = GLOBAL_Stream[sno].status & Eof_Stream_f;
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if (!out) {
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out = (Yap_peek(sno) < 0);
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}
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return out;
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}
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static int yap_fflush(int sno) {
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#if USE_READLINE
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Yap_ReadlineFlush(sno);
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#endif
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if ((GLOBAL_Stream[sno].status & Output_Stream_f) &&
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!(GLOBAL_Stream[sno].status &
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(Null_Stream_f | InMemory_Stream_f | Socket_Stream_f | Pipe_Stream_f |
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Free_Stream_f))) {
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return (fflush(GLOBAL_Stream[sno].file));
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} else
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return (0);
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}
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/** @pred get(_S_, - _C_)
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The next non-blank character from the stream _S_ is unified
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with _C_. Blank characters are the ones whose ASCII codes are not
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greater than 32. If there are no more non-blank characters in the
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stream, _C_ is unified with -1. If `end_of_stream` has already
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been reached in the previous reading, this call will give an error message.
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*/
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static Int get(USES_REGS1) { /* '$get'(Stream,-N) */
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int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "get/2");
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int ch;
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// Int status;
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if (sno < 0)
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return FALSE;
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// status = GLOBAL_Stream[sno].status;
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while ((ch = GLOBAL_Stream[sno].stream_wgetc(sno)) <= 32 && ch >= 0)
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;
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return store_code(ch, ARG2 PASS_REGS);
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}
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/** @pred get_char(+ _S_,- _C_) is iso
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If _C_ is unbound, or is an atom representation of a character, and
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the stream _S_ is a text stream, read the next character from that
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stream and unify its representation as an atom with _C_.
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*/
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static Int get_char(USES_REGS1) { /* '$get'(Stream,-N) */
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int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "get/2");
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int ch;
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// Int status;
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if (sno < 0)
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return false;
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// status = GLOBAL_Stream[sno].status;
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ch = GLOBAL_Stream[sno].stream_wgetc(sno);
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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Term t2 = Deref(ARG2);
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bool rc = Yap_unify_constant(t2, MkCharTerm(ch));
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if (!rc) {
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if (!IsAtomTerm(t2)) {
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Yap_Error(TYPE_ERROR_IN_CHARACTER, ARG2, "in input argument");
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}
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}
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return rc;
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}
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/** @pred get_code(+ _S_,- _C_) is iso
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If _C_ is unbound, or is a character code, and the stream _S_ is a
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text stream, read the next character from that stream and unify its
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code with _C_.
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*/
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static Int get_code(USES_REGS1) { /* get0(Stream,-N) */
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int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "get0/2");
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// Int status;
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Int out;
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if (sno < 0)
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return (FALSE);
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// status = GLOBAL_Stream[sno].status;
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out = GLOBAL_Stream[sno].stream_wgetc(sno);
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return store_code(out, ARG2 PASS_REGS);
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}
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/** @pred get(- _C_)
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The next non-blank character from the current input stream is unified
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with _C_. Blank characters are the ones whose ASCII codes are not
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greater than 32. If there are no more non-blank characters in the
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stream, _C_ is unified with -1. If `end_of_stream` has already
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been reached in the previous reading, this call will give an error message.
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*/
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static Int get_1(USES_REGS1) { /* get_code1(Stream,-N) */
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int sno = LOCAL_c_input_stream;
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int ch;
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// Int status;
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LOCK(GLOBAL_Stream[sno].streamlock);
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// status = GLOBAL_Stream[sno].status;
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if ((GLOBAL_Stream[sno].status & Binary_Stream_f)) {
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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PlIOError(PERMISSION_ERROR_INPUT_BINARY_STREAM, TermUserIn,
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"while getting code");
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return false;
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}
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while ((ch = GLOBAL_Stream[sno].stream_wgetc(sno)) <= 32 && ch >= 0)
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;
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return store_code(ch, ARG1 PASS_REGS);
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}
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/** @pred get_code(- _C_) is iso
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If _C_ is unbound, or is the code for a character, and
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the current stream is a text stream, read the next character from the
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current stream and unify its code with _C_.
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*/
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static Int getcode_1(USES_REGS1) { /* get0(Stream,-N) */
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int sno = LOCAL_c_input_stream;
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// Int status;
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Int out;
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// status = GLOBAL_Stream[sno].status;
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LOCK(GLOBAL_Stream[sno].streamlock);
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if ((GLOBAL_Stream[sno].status & Binary_Stream_f)) {
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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PlIOError(PERMISSION_ERROR_INPUT_BINARY_STREAM, TermUserIn,
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"while getting code");
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return false;
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}
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out = GLOBAL_Stream[sno].stream_wgetc(sno);
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return store_code(out, ARG1 PASS_REGS);
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}
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/** @pred get_char(- _C_) is iso
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If _C_ is unbound, or is an atom representation of a character, and
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the current stream is a text stream, read the next character from the
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current stream and unify its atom representation with _C_.
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*/
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static Int getchar_1(USES_REGS1) { /* get0(Stream,-N) */
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int sno = LOCAL_c_input_stream;
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// Int status;
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Int ch;
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LOCK(GLOBAL_Stream[sno].streamlock);
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// status = GLOBAL_Stream[sno].status;
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ch = GLOBAL_Stream[sno].stream_wgetc(sno);
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if ((GLOBAL_Stream[sno].status & Binary_Stream_f)) {
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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PlIOError(PERMISSION_ERROR_INPUT_BINARY_STREAM, TermUserIn,
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"while getting code");
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return false;
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}
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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bool rc = Yap_unify_constant(ARG1, MkCharTerm(ch));
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if (!rc) {
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Term t2 = Deref(ARG1);
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if (!IsAtomTerm(t2)) {
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Yap_Error(TYPE_ERROR_IN_CHARACTER, ARG1, "in input argument");
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}
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}
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return rc;
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}
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static Int get0_line_codes(USES_REGS1) { /* '$get0'(Stream,-N) */
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int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "get0/2");
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// Int status;
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Term out;
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Int ch = '\0';
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int rewind;
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if (sno < 0)
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return (FALSE);
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rewind = FALSE;
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// status = GLOBAL_Stream[sno].status;
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out = read_line(sno);
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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if (rewind)
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return Yap_unify(MkPairTerm(MkIntegerTerm(ch), out), ARG2);
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else
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return Yap_unify(out, ARG2);
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}
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/** @pred get_byte(+ _S_,- _C_) is iso
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If _C_ is unbound, or is a byte, and the stream _S_ is a
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binary stream, read the next byte from that stream and unify its
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code with _C_. A byte is represented as either a number between 1 and 255, or as -1 for EOF.
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*/
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static Int get_byte(USES_REGS) { /* '$get_byte'(Stream,-N) */
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Term out = Deref(ARG2);
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if (!IsVarTerm(out)) {
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if (!IsIntegerTerm(out)) Yap_ThrowError(TYPE_ERROR_IN_BYTE, ARG1, " bad type");
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Int ch = IntegerOfTerm(out);
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if (ch < -1 || ch > 255) Yap_ThrowError(TYPE_ERROR_IN_BYTE, ARG1, " bad type");
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}
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int sno = Yap_CheckBinaryStream(ARG1, Input_Stream_f, "get_byte/2");
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if (sno < 0)
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return (FALSE);
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out = MkIntTerm(GLOBAL_Stream[sno].stream_getc(sno));
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UNLOCK(GLOBAL_Stream[sno].streamlock);
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return Yap_unify_constant(ARG2, out);
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}
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/** @pred get_byte(- _C_) is iso
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If _C_ is unbound, or is a character code, and the current stream is a
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binary stream, read the next byte from the current stream and unify its
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code with _C_.
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|
*/
|
|
static Int get_byte_1(USES_REGS1) { /* '$get_byte'(Stream,-N) */
|
|
int sno = LOCAL_c_input_stream;
|
|
Int status;
|
|
Term out = Deref(ARG1);
|
|
|
|
if (!IsVarTerm(out)) {
|
|
if (!IsIntegerTerm(out)) Yap_ThrowError(TYPE_ERROR_IN_BYTE, ARG2, " bad type");
|
|
Int ch = IntegerOfTerm(out);
|
|
if (ch < -1 || ch > 255) Yap_ThrowError(TYPE_ERROR_IN_BYTE, ARG2, " bad type");
|
|
}
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
status = GLOBAL_Stream[sno].status;
|
|
if (!(status & Binary_Stream_f)
|
|
// &&strictISOFlag()
|
|
) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_INPUT_TEXT_STREAM, ARG1, "get_byte/1");
|
|
return (FALSE);
|
|
}
|
|
out = MkIntTerm(GLOBAL_Stream[sno].stream_getc(sno));
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return Yap_unify_constant(ARG1, out);
|
|
}
|
|
|
|
/** @pred put_code(+ _N_) is iso
|
|
|
|
Outputs to the current output stream the character whose ASCII code is
|
|
_N_. The current output stream must be a text stream. The character
|
|
_N_ must be a legal ASCII character code, an expression yielding such
|
|
a code, or a list in which case only the first element is used.
|
|
|
|
|
|
*/
|
|
static Int put_code_1(USES_REGS1) { /* '$put'(,N) */
|
|
int sno = LOCAL_c_output_stream, ch;
|
|
Term t2;
|
|
|
|
if (IsVarTerm(t2 = Deref(ARG1))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if ((ch = IntegerOfTerm(t2)) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_code/1");
|
|
return FALSE;
|
|
}
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
GLOBAL_Stream[sno].stream_wputc(sno, ch);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred put_code(+ _S_,+ _N_) is iso
|
|
|
|
As `put_code(N)`, but to text stream _S_.
|
|
|
|
|
|
*/
|
|
static Int put_code(USES_REGS1) { /* '$put'(Stream,N) */
|
|
int ch;
|
|
Term t2;
|
|
int sno;
|
|
|
|
if (IsVarTerm(t2 = Deref(ARG2))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if ((ch = IntegerOfTerm(t2)) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_code/1");
|
|
return FALSE;
|
|
}
|
|
sno = Yap_CheckTextStream(ARG1, Output_Stream_f, "put/2");
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_TEXT_STREAM, ARG1, "put/2");
|
|
return (FALSE);
|
|
}
|
|
|
|
GLOBAL_Stream[sno].stream_wputc(sno, ch);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred put_char(+ _N_) is iso
|
|
|
|
|
|
Outputs to the current output stream the character who is used to build
|
|
the representation of atom `A`. The current output stream must be a
|
|
text stream.
|
|
|
|
|
|
*/
|
|
static Int put_char_1(USES_REGS1) { /* '$put'(,N) */
|
|
int sno = LOCAL_c_output_stream;
|
|
Term t2;
|
|
int ch;
|
|
|
|
if (IsVarTerm(t2 = Deref(ARG1))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if (!IsAtomTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if ((ch = CharOfAtom(AtomOfTerm(t2))) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_char/1");
|
|
return FALSE;
|
|
}
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_TEXT_STREAM, ARG1, "put/2");
|
|
return (FALSE);
|
|
}
|
|
GLOBAL_Stream[sno].stream_wputc(sno, ch);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred put_char(+ _S_,+ _A_) is iso
|
|
|
|
As `put_char(A)`, but to text stream _S_.
|
|
|
|
|
|
*/
|
|
static Int put_char(USES_REGS1) { /* '$put'(Stream,N) */
|
|
Term t2;
|
|
int ch;
|
|
int sno;
|
|
|
|
if (IsVarTerm(t2 = Deref(ARG2))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if (!IsAtomTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if ((ch = CharOfAtom(AtomOfTerm(t2))) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_char/1");
|
|
return FALSE;
|
|
}
|
|
sno = Yap_CheckTextStream(ARG1, Output_Stream_f, "put/2");
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_TEXT_STREAM, ARG1, "put/2");
|
|
return (FALSE);
|
|
}
|
|
GLOBAL_Stream[sno].stream_wputc(sno, (int)IntegerOfTerm(Deref(ARG2)));
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred tab(+ _N_)
|
|
|
|
Outputs _N_ spaces to the current output stream.
|
|
*/
|
|
static Int tab_1(USES_REGS1) { /* nl */
|
|
int sno = LOCAL_c_output_stream;
|
|
Term t1;
|
|
Int tabs, i;
|
|
if (IsVarTerm(t1 = Deref(ARG1))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t1, "first argument");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t1)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t1, "first argument");
|
|
return FALSE;
|
|
} else if ((tabs = IntegerOfTerm(t1)) < 0) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t1, "first argument");
|
|
return FALSE;
|
|
}
|
|
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_TEXT_STREAM, ARG1, "user_output");
|
|
return (FALSE);
|
|
}
|
|
|
|
for (i = 0; i < tabs; i++)
|
|
GLOBAL_Stream[sno].stream_wputc(sno, ' ');
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred tab(+ _S_,+ _N_)
|
|
|
|
The same as tab/1, but using stream _S_.
|
|
|
|
|
|
*/
|
|
static Int tab(USES_REGS1) { /* nl(Stream) */
|
|
int sno;
|
|
Term t2;
|
|
Int tabs, i;
|
|
if (IsVarTerm(t2 = Deref(ARG2))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "put_char/1");
|
|
return FALSE;
|
|
} else if ((tabs = IntegerOfTerm(t2)) < 0) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "tab/1");
|
|
return FALSE;
|
|
}
|
|
sno = Yap_CheckTextStream(ARG1, Output_Stream_f, "nl/1");
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_TEXT_STREAM, ARG1, "nl/0");
|
|
return (FALSE);
|
|
}
|
|
|
|
for (i = 0; i < tabs; i++)
|
|
GLOBAL_Stream[sno].stream_wputc(sno, ' ');
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred nl(+ _S_) is iso
|
|
|
|
Outputs a new line to stream _S_.
|
|
*/
|
|
static Int nl_1(USES_REGS1) { /* nl */
|
|
int sno = LOCAL_c_output_stream;
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_BINARY_STREAM, ARG1, "nl/0");
|
|
return (FALSE);
|
|
}
|
|
GLOBAL_Stream[sno].stream_wputc(sno, 10);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred nl is iso
|
|
|
|
|
|
Outputs a new line to the current output stream.
|
|
|
|
|
|
|
|
|
|
*/
|
|
static Int nl(USES_REGS1) { /* nl(Stream) */
|
|
int sno = Yap_CheckTextStream(ARG1, Output_Stream_f, "nl/1");
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_BINARY_STREAM, ARG1, "put/2");
|
|
return (FALSE);
|
|
}
|
|
GLOBAL_Stream[sno].stream_wputc(sno, 10);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred put_byte(+ _S_,+ _N_) is iso
|
|
|
|
As `put_byte(N)`, but to binary stream _S_.
|
|
|
|
|
|
*/
|
|
static Int put_byte(USES_REGS1) { /* '$put_byte'(Stream,N) */
|
|
Term t2;
|
|
Int ch;
|
|
if (IsVarTerm(t2 = Deref(ARG2))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_code/2");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_BYTE, t2, "put_code/2");
|
|
return FALSE;
|
|
} else if ((ch = IntegerOfTerm(t2)) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_code/1");
|
|
return FALSE;
|
|
}
|
|
int sno = Yap_CheckBinaryStream(ARG1, Output_Stream_f, "put/2");
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
GLOBAL_Stream[sno].stream_putc(sno, ch);
|
|
/*
|
|
* if (!(GLOBAL_Stream[sno].status & Null_Stream_f))
|
|
* yap_fflush(GLOBAL_Stream[sno].file);
|
|
*/
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred put_byte(+ _N_) is iso
|
|
|
|
|
|
Outputs to the current output stream the character whose code is
|
|
_N_. The current output stream must be a binary stream.
|
|
|
|
|
|
*/
|
|
static Int put_byte_1(USES_REGS1) { /* '$put_byte'(Stream,N) */
|
|
Term t2;
|
|
Int ch;
|
|
int sno = LOCAL_c_output_stream;
|
|
if (IsVarTerm(t2 = Deref(ARG1))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
Yap_Error(TYPE_ERROR_BYTE, t2, "put_code/1");
|
|
return FALSE;
|
|
} else if ((ch = IntegerOfTerm(t2)) < -1) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "put_code/1");
|
|
return FALSE;
|
|
}
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (!(GLOBAL_Stream[sno].status & Binary_Stream_f)
|
|
//&& strictISOFlag()
|
|
) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_OUTPUT_BINARY_STREAM, ARG1, "get0/2");
|
|
return (FALSE);
|
|
}
|
|
GLOBAL_Stream[sno].stream_putc(sno, ch);
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/** @pred skip(+ _N_)
|
|
|
|
|
|
Skips input characters until the next occurrence of the character with
|
|
ASCII code _N_. The argument to this predicate can take the same forms
|
|
as those for `put` (see 6.11).
|
|
|
|
|
|
*/
|
|
static Int skip_1(USES_REGS1) { /* 'skip'(N) */
|
|
Int n;
|
|
Term t1;
|
|
int sno = LOCAL_c_output_stream;
|
|
int ch;
|
|
|
|
if (IsVarTerm(t1 = Deref(ARG1))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t1, "skip/1");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t1)) {
|
|
Yap_Error(TYPE_ERROR_INTEGER, t1, "skip/1");
|
|
return FALSE;
|
|
} else if ((n = IntegerOfTerm(t1)) < 0) {
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t1, "skip/1");
|
|
return false;
|
|
}
|
|
while ((ch = GLOBAL_Stream[sno].stream_wgetc(sno)) != n && ch != -1)
|
|
;
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return true;
|
|
}
|
|
|
|
/** @pred skip(+ _S_,- _C_)
|
|
|
|
Like skip/1, but using stream _S_ instead of the current
|
|
input stream.
|
|
|
|
|
|
*/
|
|
static Int skip(USES_REGS1) { /* '$skip'(Stream,N) */
|
|
Int n;
|
|
Term t2;
|
|
int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "skip/2");
|
|
int ch;
|
|
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
if (IsVarTerm(t2 = Deref(ARG2))) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(INSTANTIATION_ERROR, t2, "skip/2");
|
|
return FALSE;
|
|
} else if (!IsIntegerTerm(t2)) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(TYPE_ERROR_INTEGER, t2, "skip/2");
|
|
return FALSE;
|
|
} else if ((n = IntegerOfTerm(t2)) < 0) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "skip/2");
|
|
return FALSE;
|
|
}
|
|
while ((ch = GLOBAL_Stream[sno].stream_wgetc(sno)) != n && ch != -1)
|
|
;
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/**
|
|
* @pred flush_output(+Stream)
|
|
*
|
|
* Flush the stream _Stream_, that is, make sure all pending output is committed
|
|
* before any further execution.
|
|
*
|
|
* @param +_Stream_
|
|
*
|
|
*/
|
|
static Int flush_output(USES_REGS1) { /* flush_output(Stream) */
|
|
int sno = Yap_CheckStream(ARG1, Output_Stream_f, "flush_output/1");
|
|
if (sno < 0) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (FALSE);
|
|
}
|
|
yap_fflush(sno);
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (TRUE);
|
|
}
|
|
|
|
/**
|
|
* @pred flush_output
|
|
*
|
|
* Flush the current output stream, that is, make sure all pending output is
|
|
*committed
|
|
* before any further execution. By default this is user_output, but it may be
|
|
* changed by current_output/1.
|
|
*
|
|
*/
|
|
static Int flush_output0(USES_REGS1) { /* flush_output */
|
|
yap_fflush(LOCAL_c_output_stream);
|
|
return (TRUE);
|
|
}
|
|
|
|
static Int flush_all_streams(USES_REGS1) { /* $flush_all_streams */
|
|
#if BROKEN_FFLUSH_NULL
|
|
int i;
|
|
for (i = 0; i < MaxStreams; ++i) {
|
|
LOCK(GLOBAL_Stream[i].streamlock);
|
|
yap_fflush(i);
|
|
UNLOCK(GLOBAL_Stream[i].streamlock);
|
|
}
|
|
#else
|
|
fflush(NULL);
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/** @pred peek_code(+ _S_, - _C_) is iso
|
|
|
|
If _C_ is unbound, or is the code for a character, and
|
|
the stream _S_ is a text stream, read the next character from the
|
|
current stream and unify its code with _C_, while
|
|
leaving the current stream position unaltered.
|
|
|
|
*/
|
|
static Int peek_code(USES_REGS1) { /* at_end_of_stream */
|
|
/* the next character is a EOF */
|
|
int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "peek/2");
|
|
Int ch;
|
|
|
|
if (sno < 0)
|
|
return FALSE;
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_INPUT_TEXT_STREAM, ARG1, "peek_code/2");
|
|
return FALSE;
|
|
}
|
|
if ((ch = Yap_peek(sno)) < 0) {
|
|
#ifdef PEEK_EOF
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return false;
|
|
#endif
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (Yap_unify_constant(ARG2, MkIntTerm(ch)));
|
|
}
|
|
|
|
/** @pred peek_code( - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is the code for a character, and
|
|
the current input stream is a text stream, read the next character from the
|
|
current stream and unify its code with _C_, while
|
|
leaving the current stream position unaltered.
|
|
|
|
*/
|
|
static Int peek_code_1(USES_REGS1) { /* at_end_of_stream */
|
|
/* the next character is a EOF */
|
|
int sno = LOCAL_c_input_stream;
|
|
Int ch;
|
|
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (GLOBAL_Stream[sno].status & Binary_Stream_f) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_INPUT_TEXT_STREAM, ARG1, "peek_code/2");
|
|
return FALSE;
|
|
}
|
|
if ((ch = Yap_peek(sno)) < 0) {
|
|
#ifdef PEEK_EOF
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return false;
|
|
#endif
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (Yap_unify_constant(ARG1, MkIntTerm(ch)));
|
|
}
|
|
|
|
/** @pred peek_byte(+Stream, - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is a character code, and _Stream_ is a
|
|
binary stream, read the next byte from the current stream and unify its
|
|
code with _C_, while leaving the current stream position unaltered.
|
|
*/
|
|
static Int peek_byte(USES_REGS1) { /* at_end_of_stream */
|
|
/* the next character is a EOF */
|
|
int sno = Yap_CheckBinaryStream(ARG1, Input_Stream_f, "peek_byte/2");
|
|
Int ch;
|
|
|
|
if (sno < 0)
|
|
return false;
|
|
if (!(GLOBAL_Stream[sno].status & Binary_Stream_f)) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_INPUT_BINARY_STREAM, ARG1, "peek_byte/2");
|
|
return (FALSE);
|
|
}
|
|
if ((ch = dopeek_byte(sno)) < 0) {
|
|
#ifdef PEEK_EOF
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return false;
|
|
#endif
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (Yap_unify_constant(ARG2, MkIntTerm(ch)));
|
|
}
|
|
|
|
/** @pred peek_byte( - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is a character code, and _Stream_ is a
|
|
binary stream, read the next byte from the current stream and unify its
|
|
code with _C_, while leaving the current stream position unaltered.
|
|
*/
|
|
static Int peek_byte_1(USES_REGS1) { /* at_end_of_stream */
|
|
/* the next character is a EOF */
|
|
int sno = LOCAL_c_input_stream;
|
|
Int ch;
|
|
|
|
if (sno < 0)
|
|
return (FALSE);
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if (!(GLOBAL_Stream[sno].status & Binary_Stream_f)) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
Yap_Error(PERMISSION_ERROR_INPUT_BINARY_STREAM, ARG1, "peek_byte/2");
|
|
return (FALSE);
|
|
}
|
|
if ((ch = dopeek_byte(sno)) < 0) {
|
|
#ifdef PEEK_EOF
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return false;
|
|
#endif
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return (Yap_unify_constant(ARG1, MkIntTerm(ch)));
|
|
}
|
|
|
|
/** @pred peek_char(+_S_, - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is a character code, and the stream _S_ is a
|
|
binary stream, read the next byte from the current stream and unify the
|
|
atom with _C_, while leaving the stream position unaltered.
|
|
*/
|
|
static Int peek_char(USES_REGS1) {
|
|
/* the next character is a EOF */
|
|
int sno = Yap_CheckTextStream(ARG1, Input_Stream_f, "peek/2");
|
|
unsigned char sinp[16];
|
|
Int ch;
|
|
|
|
if (sno < 0)
|
|
return false;
|
|
ch = Yap_peek(sno);
|
|
if (ch < 0) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return Yap_unify_constant(ARG2, MkAtomTerm(AtomEof));
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
int off = put_utf8(sinp, ch);
|
|
if (off < 0) {
|
|
return false;
|
|
}
|
|
sinp[off] = '\0';
|
|
return Yap_unify_constant(ARG2, MkAtomTerm(Yap_ULookupAtom(sinp)));
|
|
}
|
|
|
|
/** @pred peek_char( - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is a character code, and the current input stream is a
|
|
binary stream, read the next byte from the current stream and unify the
|
|
atom with _C_, while leaving the stream position unaltered.
|
|
*/
|
|
static Int peek_char_1(USES_REGS1) {
|
|
/* the next character is a EOF */
|
|
int sno = LOCAL_c_input_stream;
|
|
unsigned char sinp[10];
|
|
Int ch;
|
|
|
|
LOCK(GLOBAL_Stream[sno].streamlock);
|
|
if ((ch = Yap_peek(sno)) < 0) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return Yap_unify_constant(ARG2, MkAtomTerm(AtomEof));
|
|
// return false;
|
|
}
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
int off = put_utf8(sinp, ch);
|
|
sinp[off] = '\0';
|
|
return Yap_unify_constant(ARG2, MkAtomTerm(Yap_ULookupAtom(sinp)));
|
|
}
|
|
|
|
/** @pred peek(+ _S_, - _C_) is deprecated
|
|
|
|
|
|
If _C_ is unbound, or is the code for a character, and
|
|
the stream _S_ is a text stream, read the next character from the
|
|
current stream and unify its code with _C_, while
|
|
leaving the current stream position unaltered.
|
|
|
|
Please use the ISO built-in peek_code/2.
|
|
*/
|
|
|
|
/** @pred peek( - _C_) is iso
|
|
|
|
|
|
If _C_ is unbound, or is the code for a character, and
|
|
the currrent input stream is a text stream, read the next character from the
|
|
current stream and unify its code with _C_, while
|
|
leaving the current stream position unaltered.
|
|
|
|
*/
|
|
|
|
void Yap_flush_all(void) { CACHE_REGS(void) flush_all_streams(PASS_REGS1); }
|
|
|
|
void Yap_FlushStreams(void) { CACHE_REGS(void) flush_all_streams(PASS_REGS1); }
|
|
|
|
void Yap_InitCharsio(void) {
|
|
Yap_InitCPred("get", 2, get, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get_code", 2, get_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get_char", 2, get_char, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get0", 2, get_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get", 1, get_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get_code", 1, getcode_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get_char", 1, getchar_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get0", 1, getcode_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("$get0_line_codes", 2, get0_line_codes,
|
|
SafePredFlag | SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("get_byte", 2, get_byte, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("get_byte", 1, get_byte_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put", 1, put_code_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put", 2, put_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_code", 1, put_code_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_code", 2, put_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_char", 1, put_char_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_char", 2, put_char, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_byte", 2, put_byte, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_byte", 1, put_byte_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_char", 2, put_char, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("put_char1", 1, put_char_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("tab", 2, tab, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("tab", 1, tab_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("nl", 0, nl_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("nl", 1, nl, SafePredFlag | SyncPredFlag);
|
|
|
|
Yap_InitCPred("$flush_all_streams", 0, flush_all_streams,
|
|
SafePredFlag | SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("flush_output", 1, flush_output, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("flush_output", 0, flush_output0, SafePredFlag | SyncPredFlag);
|
|
|
|
Yap_InitCPred("at_end_of_stream", 1, at_end_of_stream,
|
|
SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("at_end_of_stream_0", 0, at_end_of_stream_0,
|
|
SafePredFlag | SyncPredFlag);
|
|
// Yap_InitCPred ("$past_eof", 1, past_eof, SafePredFlag|SyncPredFlag);
|
|
Yap_InitCPred("peek", 2, peek_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_code", 2, peek_code, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_char", 2, peek_char, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_byte", 2, peek_byte, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek", 1, peek_code_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_code", 1, peek_code_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_char", 1, peek_char_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("peek_byte", 1, peek_byte_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("skip", 2, skip, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("skip", 1, skip_1, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("tab", 2, tab, SafePredFlag | SyncPredFlag);
|
|
Yap_InitCPred("tab", 1, tab_1, SafePredFlag | SyncPredFlag);
|
|
}
|
|
|
|
/// @}
|