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support for passing priority as argument to write. (Ulrich's #45).

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fixes on making write handle infinite loops
This commit is contained in:
Vitor Santos Costa 2009-05-22 13:24:27 -05:00
parent e1421f207e
commit 51e669dcfb
13 changed files with 154 additions and 77 deletions
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4
BEAM/eam_am.c
View File

@ -140,7 +140,7 @@ int showTime(void);
struct AND_BOX *choose_leftmost(void);
extern Cell BEAM_is(void);
extern void do_eam_indexing(struct Predicates *);
extern void Yap_plwrite(Term, int (*mywrite) (int, int), int);
extern void Yap_plwrite(Term, int (*mywrite) (int, int), int, int);
#if Debug_Dump_State
void dump_eam_state(void);
@ -2511,7 +2511,7 @@ break_debug(contador);
#endif
#ifdef DEBUG
Yap_plwrite ((Term) beam_X[1], Yap_DebugPutc, 0);
Yap_plwrite ((Term) beam_X[1], Yap_DebugPutc, 0, 1200);
#else
extern int beam_write (void);
beam_write();

4
BEAM/toeam.c
View File

@ -742,10 +742,10 @@ void ShowCode_new2(int op, int new1,CELL new4)
switch (ch = *f++)
{
case '1':
Yap_plwrite(MkIntTerm(new1), Yap_DebugPutc, 0);
Yap_plwrite(MkIntTerm(new1), Yap_DebugPutc, 0, 1200);
break;
case '4':
Yap_plwrite(MkIntTerm(new4), Yap_DebugPutc, 0);
Yap_plwrite(MkIntTerm(new4), Yap_DebugPutc, 0, 1200);
break;
default:
Yap_DebugPutc (Yap_c_error_stream,'%');

2
C/c_interface.c
View File

@ -1868,7 +1868,7 @@ YAP_Write(Term t, int (*myputc)(wchar_t), int flags)
BACKUP_MACHINE_REGS();
do_putcf = myputc; /* */
Yap_plwrite (t, do_yap_putc, flags);
Yap_plwrite (t, do_yap_putc, flags, 1200);
RECOVER_MACHINE_REGS();
}

16
C/cdmgr.c
View File

@ -926,31 +926,31 @@ IPred(PredEntry *ap, UInt NSlots)
if (!tmod)
tmod = TermProlog;
Yap_DebugPutc(Yap_c_error_stream,'\t');
Yap_plwrite(tmod, Yap_DebugPutc, 0);
Yap_DebugPlWrite(tmod);
Yap_DebugPutc(Yap_c_error_stream,':');
if (ap->ModuleOfPred == IDB_MODULE) {
Term t = Deref(ARG1);
if (IsAtomTerm(t)) {
Yap_plwrite(t, Yap_DebugPutc, 0);
Yap_DebugPlWrite(t);
} else if (IsIntegerTerm(t)) {
Yap_plwrite(t, Yap_DebugPutc, 0);
Yap_DebugPlWrite(t);
} else {
Functor f = FunctorOfTerm(t);
Atom At = NameOfFunctor(f);
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
Yap_DebugPlWrite(MkAtomTerm(At));
Yap_DebugPutc(Yap_c_error_stream,'/');
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
Yap_DebugPlWrite(MkIntTerm(ArityOfFunctor(f)));
}
} else {
if (ap->ArityOfPE == 0) {
Atom At = (Atom)ap->FunctorOfPred;
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
Yap_DebugPlWrite(MkAtomTerm(At));
} else {
Functor f = ap->FunctorOfPred;
Atom At = NameOfFunctor(f);
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
Yap_DebugPlWrite(MkAtomTerm(At));
Yap_DebugPutc(Yap_c_error_stream,'/');
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
Yap_DebugPlWrite(MkIntTerm(ArityOfFunctor(f)));
}
}
Yap_DebugPutc(Yap_c_error_stream,'\n');

2
C/computils.c
View File

@ -324,7 +324,7 @@ write_address(CELL address)
{
if (address < (CELL)AtomBase) {
Yap_DebugErrorPutc('L');
Yap_DebugPlWrite (MkIntTerm (address));
Yap_DebugPlWrite(MkIntTerm (address));
} else if (address == (CELL) FAILCODE) {
Yap_DebugPlWrite (MkAtomTerm (AtomFail));
} else {

67
C/iopreds.c
View File

@ -696,7 +696,7 @@ Yap_DebugPutc(int sno, wchar_t ch)
void
Yap_DebugPlWrite(Term t)
{
Yap_plwrite(t, Yap_DebugPutc, 0);
Yap_plwrite(t, Yap_DebugPutc, 0, 1200);
}
void
@ -3578,7 +3578,7 @@ p_current_output (void)
int beam_write (void)
{
Yap_StartSlots();
Yap_plwrite (ARG1, Stream[Yap_c_output_stream].stream_wputc, 0);
Yap_plwrite (ARG1, Stream[Yap_c_output_stream].stream_wputc, 0, 1200);
if (EX != 0L) {
Term ball = EX;
EX = 0L;
@ -3591,12 +3591,55 @@ int beam_write (void)
static Int
p_write (void)
{ /* '$write'(+Flags,?Term) */
{
/* '$write'(+Flags,?Term) */
int flags = (int) IntOfTerm (Deref (ARG1));
/* notice: we must have ASP well set when using portray, otherwise
we cannot make recursive Prolog calls */
Yap_StartSlots();
Yap_plwrite (ARG2, Stream[Yap_c_output_stream].stream_wputc, flags);
Yap_plwrite (ARG2, Stream[Yap_c_output_stream].stream_wputc, flags, 1200);
if (EX != 0L) {
Term ball = EX;
EX = 0L;
Yap_JumpToEnv(ball);
return(FALSE);
}
return (TRUE);
}
static Int
p_write_prio (void)
{
/* '$write'(+Flags,?Term) */
int flags = (int) IntOfTerm (Deref (ARG1));
/* notice: we must have ASP well set when using portray, otherwise
we cannot make recursive Prolog calls */
Yap_StartSlots();
Yap_plwrite (ARG3, Stream[Yap_c_output_stream].stream_wputc, flags, (int)IntOfTerm(Deref(ARG2)));
if (EX != 0L) {
Term ball = EX;
EX = 0L;
Yap_JumpToEnv(ball);
return(FALSE);
}
return (TRUE);
}
static Int
p_write2_prio (void)
{ /* '$write'(+Stream,+Flags,?Term) */
int old_output_stream = Yap_c_output_stream;
Yap_c_output_stream = CheckStream (ARG1, Output_Stream_f, "write/2");
if (Yap_c_output_stream == -1) {
Yap_c_output_stream = old_output_stream;
return(FALSE);
}
UNLOCK(Stream[Yap_c_output_stream].streamlock);
/* notice: we must have ASP well set when using portray, otherwise
we cannot make recursive Prolog calls */
Yap_StartSlots();
Yap_plwrite (ARG4, Stream[Yap_c_output_stream].stream_wputc, (int) IntOfTerm (Deref (ARG2)), (int) IntOfTerm (Deref (ARG3)));
Yap_c_output_stream = old_output_stream;
if (EX != 0L) {
Term ball = EX;
EX = 0L;
@ -3619,7 +3662,7 @@ p_write2 (void)
/* notice: we must have ASP well set when using portray, otherwise
we cannot make recursive Prolog calls */
Yap_StartSlots();
Yap_plwrite (ARG3, Stream[Yap_c_output_stream].stream_wputc, (int) IntOfTerm (Deref (ARG2)));
Yap_plwrite (ARG3, Stream[Yap_c_output_stream].stream_wputc, (int) IntOfTerm (Deref (ARG2)), 1200);
Yap_c_output_stream = old_output_stream;
if (EX != 0L) {
Term ball = EX;
@ -4950,7 +4993,7 @@ format(volatile Term otail, volatile Term oargs, int sno)
goto do_instantiation_error;
if (!IsAtomTerm(t))
goto do_type_atom_error;
Yap_plwrite (t, f_putc, Handle_vars_f|To_heap_f);
Yap_plwrite (t, f_putc, Handle_vars_f|To_heap_f, 1200);
FormatInfo = &finfo;
break;
case 'c':
@ -5173,7 +5216,7 @@ format(volatile Term otail, volatile Term oargs, int sno)
goto do_consistency_error;
t = targs[targ++];
Yap_StartSlots();
Yap_plwrite (t, f_putc, Quote_illegal_f|Ignore_ops_f|To_heap_f );
Yap_plwrite (t, f_putc, Quote_illegal_f|Ignore_ops_f|To_heap_f , 1200);
FormatInfo = &finfo;
ASP++;
break;
@ -5212,7 +5255,7 @@ format(volatile Term otail, volatile Term oargs, int sno)
Yap_StartSlots();
{
long sl = Yap_InitSlot(args);
Yap_plwrite(t, f_putc, Handle_vars_f|Use_portray_f|To_heap_f);
Yap_plwrite(t, f_putc, Handle_vars_f|Use_portray_f|To_heap_f, 1200);
FormatInfo = &finfo;
args = Yap_GetFromSlot(sl);
Yap_RecoverSlots(1);
@ -5242,7 +5285,7 @@ format(volatile Term otail, volatile Term oargs, int sno)
goto do_consistency_error;
t = targs[targ++];
Yap_StartSlots();
Yap_plwrite (t, f_putc, Handle_vars_f|Quote_illegal_f|To_heap_f);
Yap_plwrite (t, f_putc, Handle_vars_f|Quote_illegal_f|To_heap_f, 1200);
FormatInfo = &finfo;
ASP++;
break;
@ -5251,7 +5294,7 @@ format(volatile Term otail, volatile Term oargs, int sno)
goto do_consistency_error;
t = targs[targ++];
Yap_StartSlots();
Yap_plwrite (t, f_putc, Handle_vars_f|To_heap_f);
Yap_plwrite (t, f_putc, Handle_vars_f|To_heap_f, 1200);
FormatInfo = &finfo;
ASP++;
break;
@ -6102,7 +6145,7 @@ Yap_TermToString(Term t, char *s, unsigned int sz, int flags)
return FALSE;
Yap_StartSlots();
Yap_c_output_stream = sno;
Yap_plwrite (t, Stream[sno].stream_wputc, flags);
Yap_plwrite (t, Stream[sno].stream_wputc, flags, 1200);
s[Stream[sno].u.mem_string.pos] = '\0';
Stream[sno].status = Free_Stream_f;
Yap_c_output_stream = old_output_stream;
@ -6174,6 +6217,8 @@ Yap_InitIOPreds(void)
Yap_InitCPred ("$skip", 2, p_skip, SafePredFlag|SyncPredFlag|HiddenPredFlag);
Yap_InitCPred ("$write", 2, p_write, SyncPredFlag|HiddenPredFlag);
Yap_InitCPred ("$write", 3, p_write2, SyncPredFlag|HiddenPredFlag);
Yap_InitCPred ("$write_with_prio", 3, p_write_prio, SyncPredFlag|HiddenPredFlag);
Yap_InitCPred ("$write_with_prio", 4, p_write2_prio, SyncPredFlag|HiddenPredFlag);
Yap_InitCPred ("format", 2, p_format, SyncPredFlag);
Yap_InitCPred ("format", 3, p_format2, SyncPredFlag);
Yap_InitCPred ("$current_line_number", 2, p_cur_line_no, SafePredFlag|SyncPredFlag|HiddenPredFlag);

2
C/parser.c
View File

@ -705,7 +705,7 @@ ParseTerm(int prio, JMPBUFF *FailBuff)
#ifdef DEBUG
if (Yap_Option['p' - 'a' + 1]) {
Yap_DebugPutc(Yap_c_error_stream,'[');
Yap_plwrite (t, Yap_DebugPutc, 0);
Yap_DebugPlWrite(t);
Yap_DebugPutc(Yap_c_error_stream,']');
Yap_DebugPutc(Yap_c_error_stream,'\n');
}

2
C/tracer.c
View File

@ -72,7 +72,7 @@ send_tracer_message(char *start, char *name, Int arity, char *mname, CELL *args)
max_depth = 5;
max_list = 5;
max_write_args = 10;
Yap_plwrite(args[i], TracePutchar, Handle_vars_f);
Yap_plwrite(args[i], TracePutchar, Handle_vars_f, 1200);
max_depth = omax_depth;
max_list = omax_list;
max_write_args = omax_write_args;

36
C/write.c
View File

@ -444,14 +444,14 @@ static Term
from_pointer(CELL *ptr, struct rewind_term *rwt)
{
Term t;
while (IsVarTerm(*ptr) && *ptr)
while (IsVarTerm(*ptr) && !IsUnboundVar(ptr))
ptr = (CELL *)*ptr;
t = *ptr;
rwt->old = t;
if (!IsVarTerm(t)) {
rwt->ptr = ptr;
rwt->old = t;
*ptr = TermFoundVar;
}
return t;
}
@ -520,7 +520,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepPair(t), &nrwt), 999, new_depth, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
t = Yap_GetFromSlot(sl);
Yap_RecoverSlots(1);
@ -538,7 +538,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
wrputc('|', wglb->writewch);
lastw = separator;
writeTerm(from_pointer(RepPair(t)+1, &nrwt), 999, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
}
wrputc(']', wglb->writewch);
lastw = separator;
@ -647,7 +647,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot((CELL)p);
}
writeTerm(from_pointer(p++, &nrwt), 999, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
p = (CELL *)Yap_GetFromSlot(sl);
@ -707,7 +707,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
lastw = separator;
}
writeTerm(from_pointer(RepAppl(t)+1, &nrwt), rp, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (bracket_right) {
wrputc(')', wglb->writewch);
lastw = separator;
@ -739,7 +739,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepAppl(t)+1, &nrwt), lp, depth + 1, rinfixarg, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
t = Yap_GetFromSlot(sl);
@ -783,7 +783,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepAppl(t)+1, &nrwt), lp, depth + 1, rinfixarg, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
t = Yap_GetFromSlot(sl);
@ -805,7 +805,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
lastw = separator;
}
writeTerm(from_pointer(RepAppl(t)+2, &nrwt), rp, depth + 1, TRUE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (bracket_right) {
wrputc(')', wglb->writewch);
lastw = separator;
@ -848,7 +848,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepAppl(t)+1, &nrwt), 999, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
t = Yap_GetFromSlot(sl);
@ -861,7 +861,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
wrputc('{', wglb->writewch);
lastw = separator;
writeTerm(from_pointer(RepAppl(t)+1, &nrwt), 1200, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
wrputc('}', wglb->writewch);
lastw = separator;
} else if (atom == AtomArray) {
@ -881,7 +881,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepAppl(t)+op, &nrwt), 999, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
t = Yap_GetFromSlot(sl);
@ -912,7 +912,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
sl = Yap_InitSlot(t);
}
writeTerm(from_pointer(RepAppl(t)+op, &nrwt), 999, depth + 1, FALSE, wglb, &nrwt);
*nrwt.ptr = nrwt.old; nrwt.ptr = NULL;
if (nrwt.ptr) { *nrwt.ptr = nrwt.old; nrwt.ptr = NULL; };
if (wglb->keep_terms) {
/* garbage collection may be called */
t = Yap_GetFromSlot(sl);
@ -930,7 +930,7 @@ writeTerm(Term t, int p, int depth, int rinfixarg, struct write_globs *wglb, str
}
void
Yap_plwrite(Term t, int (*mywrite) (int, wchar_t), int flags)
Yap_plwrite(Term t, int (*mywrite) (int, wchar_t), int flags, int priority)
/* term to be written */
/* consumer */
/* write options */
@ -953,7 +953,7 @@ Yap_plwrite(Term t, int (*mywrite) (int, wchar_t), int flags)
wglb.keep_terms = (flags & (Use_portray_f|To_heap_f));
wglb.Ignore_ops = flags & Ignore_ops_f;
/* protect slots for portray */
writeTerm(from_pointer(&t, &rwt), 1200, 1, FALSE, &wglb, &rwt);
*rwt.ptr = rwt.old; rwt.ptr = NULL;
writeTerm(from_pointer(&t, &rwt), priority, 1, FALSE, &wglb, &rwt);
if (rwt.ptr) { *rwt.ptr = rwt.old; rwt.ptr = NULL; };
}

3
H/yapio.h
View File

@ -338,9 +338,10 @@ extern int
#define Handle_vars_f 4
#define Use_portray_f 8
#define To_heap_f 16
#define Unfold_cyclics_f 32
/* write.c */
void STD_PROTO(Yap_plwrite,(Term,int (*)(int, wchar_t),int));
void STD_PROTO(Yap_plwrite,(Term,int (*)(int, wchar_t), int, int));
/* grow.c */
int STD_PROTO(Yap_growheap_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));

6
docs/yap.tex
View File

@ -4653,6 +4653,12 @@ If @code{Depth} is a positive integer, use @t{Depth} as
the maximum depth to portray a term. The default is @code{0}, that is,
unlimited depth.
@item priority(+@var{Piority})
If @code{Priority} is a positive integer smaller than @code{1200},
give the context priority. The default is @code{1200}.
@item cycles(+@var{Bool})
Do not loop in rational trees (default).
@end table
@item writeq(@var{T}) [ISO]

4
pl/boot.yap
View File

@ -644,8 +644,8 @@ true :- true.
'$write_output_vars'(VL),
format(user_error,' = ', []),
( recorded('$print_options','$toplevel'(Opts),_) ->
write_term(user_error,B,Opts) ;
format(user_error,'~w',[B])
write_term(user_error,B,[priority(699)|Opts]) ;
write_term(user_error,B,[priority(699)])
).
'$write_goal_output'(nl, First, NG, First, NG) :- !,
format(user_error,'~n',[]).

79
pl/yio.yap
View File

@ -226,6 +226,8 @@ open(F,T,S,Opts) :-
'$check_opt_sp'(A, G) :-
'$do_error'(domain_error(stream_property,A),G).
'$check_opt_write'(cycles(T), G) :- !,
'$check_cycles_arg'(T, G).
'$check_opt_write'(quoted(T), G) :- !,
'$check_write_quoted_arg'(T, G).
'$check_opt_write'(ignore_ops(T), G) :- !,
@ -234,6 +236,8 @@ open(F,T,S,Opts) :-
'$check_write_numbervars_arg'(T, G).
'$check_opt_write'(portrayed(T), G) :- !,
'$check_write_portrayed'(T, G).
'$check_opt_write'(priority(T), G) :- !,
'$check_priority_arg'(T, G).
'$check_opt_write'(max_depth(T), G) :- !,
'$check_write_max_depth'(T, G).
'$check_opt_write'(A, G) :-
@ -319,6 +323,13 @@ open(F,T,S,Opts) :-
'$check_write_quoted_arg'(X,G) :-
'$do_error'(domain_error(write_option,write_quoted(X)),G).
'$check_cycles_arg'(X, G) :- var(X), !,
'$do_error'(instantiation_error,G).
'$check_cycles_arg'(true,_) :- !.
'$check_cycles_arg'(false,_) :- !.
'$check_cycles_arg'(X,G) :-
'$do_error'(domain_error(write_option,cycles(X)),G).
'$check_write_ignore_ops_arg'(X, G) :- var(X), !,
'$do_error'(instantiation_error,G).
'$check_write_ignore_ops_arg'(true,_) :- !.
@ -346,6 +357,12 @@ open(F,T,S,Opts) :-
'$check_write_max_depth'(X,G) :-
'$do_error'(domain_error(write_option,max_depth(X)),G).
'$check_priority_arg'(X, G) :- var(X), !,
'$do_error'(instantiation_error,G).
'$check_priority_arg'(I,_) :- integer(I), I >= 0, I =< 1200, !.
'$check_priority_arg'(X,G) :-
'$do_error'(domain_error(write_option,priority(X)),G).
set_input(Stream) :-
'$set_input'(Stream).
@ -536,50 +553,58 @@ write_canonical(_,_).
write_term(T,Opts) :-
'$check_io_opts'(Opts, write_term(T,Opts)),
'$process_wt_opts'(Opts, 0, Flag, Callbacks),
'$write'(Flag, T),
'$process_wt_opts'(Opts, 0, Flag, Priority, Callbacks),
'$write_with_prio'(Flag, Priority, T),
'$process_wt_callbacks'(Callbacks),
fail.
write_term(_,_).
write_term(S, T, Opts) :-
'$check_io_opts'(Opts, write_term(T,Opts)),
'$process_wt_opts'(Opts, 0, Flag, Callbacks),
'$write'(S, Flag, T),
'$process_wt_opts'(Opts, 0, Flag, Priority, Callbacks),
'$write_with_prio'(S, Flag, Priority, T),
'$process_wt_callbacks'(Callbacks),
fail.
write_term(_,_,_).
'$process_wt_opts'([], Flag, Flag, []).
'$process_wt_opts'([quoted(true)|Opts], Flag0, Flag, CallBacks) :-
'$process_wt_opts'([], Flag, Flag, 1200, []).
'$process_wt_opts'([quoted(true)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 \/ 1,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([quoted(false)|Opts], Flag0, Flag, CallBacks) :-
FlagI is Flag0 /\ 14,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([ignore_ops(true)|Opts], Flag0, Flag, CallBacks) :-
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([quoted(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 /\ 30,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([cycles(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 \/ 16,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([cycles(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 /\ 15,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([ignore_ops(true)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 \/ 2,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([ignore_ops(false)|Opts], Flag0, Flag, CallBacks) :-
FlagI is Flag0 /\ 13,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([numbervars(true)|Opts], Flag0, Flag, CallBacks) :-
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([ignore_ops(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 /\ 39,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([numbervars(true)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 \/ 4,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([numbervars(false)|Opts], Flag0, Flag, CallBacks) :-
FlagI is Flag0 /\ 11,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([portrayed(true)|Opts], Flag0, Flag, CallBacks) :-
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([numbervars(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 /\ 27,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([portrayed(true)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 \/ 8,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([portrayed(false)|Opts], Flag0, Flag, CallBacks) :-
FlagI is Flag0 /\ 7,
'$process_wt_opts'(Opts, FlagI, Flag, CallBacks).
'$process_wt_opts'([max_depth(D)|Opts], Flag0, Flag, [max_depth(D1,D0,D2)|CallBacks]) :-
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([portrayed(false)|Opts], Flag0, Flag, Priority, CallBacks) :-
FlagI is Flag0 /\ 23,
'$process_wt_opts'(Opts, FlagI, Flag, Priority, CallBacks).
'$process_wt_opts'([priority(Priority)|Opts], Flag0, Flag, Priority, CallBacks) :-
'$process_wt_opts'(Opts, Flag0, Flag, _, CallBacks).
'$process_wt_opts'([max_depth(D)|Opts], Flag0, Flag, Priority, [max_depth(D1,D0,D2)|CallBacks]) :-
write_depth(D1,D0,D2),
D10 is D*10,
write_depth(D,D,D10),
'$process_wt_opts'(Opts, Flag0, Flag, CallBacks).
'$process_wt_opts'(Opts, Flag0, Flag, Priority, CallBacks).
'$process_wt_callbacks'([]).
'$process_wt_callbacks'([max_depth(D1,D0,D2)|Cs]) :-