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improve mod flags & system flags

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This commit is contained in:
Vítor Santos Costa 2016-01-03 01:32:04 +00:00
parent eabc869c69
commit 811808fc34
1 changed files with 793 additions and 697 deletions
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458
C/flags.c
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@ -15,14 +15,12 @@
* * * *
*************************************************************************/ *************************************************************************/
/** @file C/flags.c /** @file C/flags.c
@ingroup Flags @ingroup Flags
@{ @{
*/ */
// this is where we define flags // this is where we define flags
#define INIT_FLAGS 1 #define INIT_FLAGS 1
@ -56,35 +54,34 @@ static Int set_prolog_flag(USES_REGS1);
#include "yapio.h" #include "yapio.h"
#include "eval.h" #include "eval.h"
#define YAP_FLAG( ID, NAME, WRITABLE, DEF, INIT, HELPER ) { NAME, WRITABLE, DEF, INIT, HELPER } #define YAP_FLAG(ID, NAME, WRITABLE, DEF, INIT, HELPER) \
{ NAME, WRITABLE, DEF, INIT, HELPER }
#define GZERO_FLAG { NULL, false, NULL, NULL, NULL } #define GZERO_FLAG \
#define LZERO_FLAG { NULL, false, NULL, NULL, NULL } { NULL, false, NULL, NULL, NULL }
#define LZERO_FLAG \
{ NULL, false, NULL, NULL, NULL }
static flag_info global_flags_setup[] = { static flag_info global_flags_setup[] = {
#include "YapGFlagInfo.h" #include "YapGFlagInfo.h"
GZERO_FLAG GZERO_FLAG};
};
static flag_info local_flags_setup[] = { static flag_info local_flags_setup[] = {
#include "YapLFlagInfo.h" #include "YapLFlagInfo.h"
LZERO_FLAG LZERO_FLAG};
};
static bool indexer(Term inp) { static bool indexer(Term inp) {
if (inp == TermOff || if (inp == TermOff || inp == TermSingle || inp == TermCompact ||
inp == TermSingle|| inp == TermMulti || inp == TermOn || inp == TermMax)
inp == TermCompact||
inp == TermMulti||
inp == TermOn||
inp == TermMax )
return true; return true;
if (IsAtomTerm(inp)) { if (IsAtomTerm(inp)) {
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp, "set_prolog_flag index in {off,single,compact,multi,on,max}"); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp,
"set_prolog_flag index in {off,single,compact,multi,on,max}");
return false; return false;
} }
Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag in {dec10,error,fail,quiet}"); Yap_Error(TYPE_ERROR_ATOM, inp,
"set_prolog_flag in {dec10,error,fail,quiet}");
return false; return false;
} }
@ -105,10 +102,15 @@ static bool dqf1( ModEntry *new, Term t2 USES_REGS ) {
return true; return true;
} }
/* bad argument, but still an atom */ /* bad argument, but still an atom */
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for backquoted string flag, use one string, arom, codes or chars", RepAtom(AtomOfTerm(t2))->StrOfAE); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for backquoted "
"string flag, use one string, "
"arom, codes or chars",
RepAtom(AtomOfTerm(t2))->StrOfAE);
return false; return false;
} else { } else {
Yap_Error(TYPE_ERROR_ATOM, t2, "set_prolog_flag(double_quotes, %s), should be {string,atom,codes,chars}", RepAtom(AtomOfTerm(t2))->StrOfAE); Yap_Error(TYPE_ERROR_ATOM, t2, "set_prolog_flag(double_quotes, %s), should "
"be {string,atom,codes,chars}",
RepAtom(AtomOfTerm(t2))->StrOfAE);
return false; return false;
} }
} }
@ -119,8 +121,6 @@ static bool dqf1( ModEntry *new, Term t2 USES_REGS ) {
return dqf1(new, t2 PASS_REGS); return dqf1(new, t2 PASS_REGS);
} }
static bool bqf1(ModEntry *new, Term t2 USES_REGS) { static bool bqf1(ModEntry *new, Term t2 USES_REGS) {
new->flags &= ~(BCKQ_CHARS | BCKQ_CODES | BCKQ_ATOM | BCKQ_STRING); new->flags &= ~(BCKQ_CHARS | BCKQ_CODES | BCKQ_ATOM | BCKQ_STRING);
if (IsAtomTerm(t2)) { if (IsAtomTerm(t2)) {
@ -137,47 +137,48 @@ static bool bqf1( ModEntry *new, Term t2 USES_REGS ) {
new->flags |= BCKQ_CHARS; new->flags |= BCKQ_CHARS;
return true; return true;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for backquoted string flag, use one string, arom, codes or chars", RepAtom(AtomOfTerm(t2))->StrOfAE); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for backquoted "
"string flag, use one string, "
"arom, codes or chars",
RepAtom(AtomOfTerm(t2))->StrOfAE);
return false; return false;
} else { } else {
Yap_Error(TYPE_ERROR_ATOM, t2, "flag %s is not module-scoped", RepAtom(AtomOfTerm(t2))->StrOfAE); Yap_Error(TYPE_ERROR_ATOM, t2, "flag %s is not module-scoped",
RepAtom(AtomOfTerm(t2))->StrOfAE);
return false; return false;
} }
} }
static bool isaccess(Term inp) { static bool isaccess(Term inp) {
if (inp == TermReadWrite || if (inp == TermReadWrite || inp == TermReadOnly)
inp == TermReadOnly )
return true; return true;
if (IsAtomTerm(inp)) { if (IsAtomTerm(inp)) {
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp, "set_prolog_flag access in {read_write,read_only}"); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp,
"set_prolog_flag access in {read_write,read_only}");
return false; return false;
} }
Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag access in {read_write,read_only}"); Yap_Error(TYPE_ERROR_ATOM, inp,
"set_prolog_flag access in {read_write,read_only}");
return false; return false;
} }
static bool isground( Term inp ) { static bool isground(Term inp) { return Yap_IsGroundTerm(inp); }
return Yap_IsGroundTerm( inp );
}
static bool flagscope(Term inp) { static bool flagscope(Term inp) {
if (inp == TermGlobal || if (inp == TermGlobal || inp == TermThread || inp == TermModule)
inp == TermThread ||
inp == TermModule)
return true; return true;
if (IsAtomTerm(inp)) { if (IsAtomTerm(inp)) {
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp, "set_prolog_flag access in {global,module,thread}"); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, inp,
"set_prolog_flag access in {global,module,thread}");
return false; return false;
} }
Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag access in {global,module,thread}"); Yap_Error(TYPE_ERROR_ATOM, inp,
"set_prolog_flag access in {global,module,thread}");
return false; return false;
} }
static bool mkprompt(Term inp) { static bool mkprompt(Term inp) {
CACHE_REGS CACHE_REGS
if (IsVarTerm(inp)) { if (IsVarTerm(inp)) {
@ -187,7 +188,8 @@ static bool mkprompt( Term inp ) {
Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag"); Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag");
return false; return false;
} }
strncpy( LOCAL_Prompt, (const char *)RepAtom( AtomOfTerm( inp ) )->StrOfAE, MAX_PROMPT ); strncpy(LOCAL_Prompt, (const char *)RepAtom(AtomOfTerm(inp))->StrOfAE,
MAX_PROMPT);
return true; return true;
} }
@ -208,7 +210,8 @@ static bool getenc( Term inp ) {
static bool enablerl( Term inp ) { static bool enablerl( Term inp ) {
CACHE_REGS CACHE_REGS
if (IsVarTerm(inp)) { if (IsVarTerm(inp)) {
return Yap_unify( inp, MkAtomTerm( Yap_LookupAtom( enc_name(LOCAL_encoding) )) ); return Yap_unify( inp, MkAtomTerm( Yap_LookupAtom( enc_name(LOCAL_encoding)
)) );
} }
if (!IsAtomTerm(inp) ) { if (!IsAtomTerm(inp) ) {
Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag"); Yap_Error(TYPE_ERROR_ATOM, inp, "set_prolog_flag");
@ -232,7 +235,8 @@ static bool typein( Term inp ) {
return false; return false;
} }
CurrentModule = inp; CurrentModule = inp;
if (inp == TermProlog) CurrentModule = PROLOG_MODULE; if (inp == TermProlog)
CurrentModule = PROLOG_MODULE;
return true; return true;
} }
@ -388,7 +392,6 @@ static bool list_atom( Term inp ) {
} }
#endif #endif
static bool list_option(Term inp) { static bool list_option(Term inp) {
if (IsVarTerm(inp)) { if (IsVarTerm(inp)) {
Yap_Error(INSTANTIATION_ERROR, inp, "set_prolog_flag in \"...\""); Yap_Error(INSTANTIATION_ERROR, inp, "set_prolog_flag in \"...\"");
@ -404,8 +407,7 @@ static bool list_option( Term inp ) {
} }
if (IsApplTerm(hd)) { if (IsApplTerm(hd)) {
Functor f = FunctorOfTerm(hd); Functor f = FunctorOfTerm(hd);
if (!IsExtensionFunctor(f) && if (!IsExtensionFunctor(f) && ArityOfFunctor(f) == 1 &&
ArityOfFunctor(f) == 1 &&
Yap_IsGroundTerm(hd)) { Yap_IsGroundTerm(hd)) {
continue; continue;
} }
@ -424,13 +426,11 @@ static bool list_option( Term inp ) {
return true; return true;
} else if (IsApplTerm(inp)) { } else if (IsApplTerm(inp)) {
Functor f = FunctorOfTerm(inp); Functor f = FunctorOfTerm(inp);
if (!IsExtensionFunctor(f) && if (!IsExtensionFunctor(f) && ArityOfFunctor(f) == 1 &&
ArityOfFunctor(f) == 1 &&
Yap_IsGroundTerm(ArgOfTerm(1, inp))) { Yap_IsGroundTerm(ArgOfTerm(1, inp))) {
return true; return true;
} }
} }
} }
return false; return false;
} }
@ -548,12 +548,8 @@ static bool os_argv(Term inp) {
return false; return false;
} }
static FlagEntry * static FlagEntry *
GetFlagProp(Atom a ) GetFlagProp(Atom a) { /* look property list of atom a for kind */
{ /* look property list of atom a for kind */
AtomEntry *ae = RepAtom(a); AtomEntry *ae = RepAtom(a);
FlagEntry *pp; FlagEntry *pp;
@ -567,9 +563,7 @@ GetFlagProp(Atom a )
return pp; return pp;
} }
static void static void initFlag(flag_info *f, int fnum, bool global) {
initFlag(flag_info *f, int fnum, bool global)
{
Atom name = Yap_LookupAtom(f->name); Atom name = Yap_LookupAtom(f->name);
AtomEntry *ae = RepAtom(name); AtomEntry *ae = RepAtom(name);
WRITE_LOCK(ae->ARWLock); WRITE_LOCK(ae->ARWLock);
@ -578,7 +572,9 @@ initFlag(flag_info *f, int fnum, bool global)
fprop = (FlagEntry *)Yap_AllocAtomSpace(sizeof(FlagEntry)); fprop = (FlagEntry *)Yap_AllocAtomSpace(sizeof(FlagEntry));
if (fprop == NULL) { if (fprop == NULL) {
WRITE_UNLOCK(ae->ARWLock); WRITE_UNLOCK(ae->ARWLock);
Yap_Error(RESOURCE_ERROR_HEAP,TermNil,"not enough space for new Flag %s", ae->StrOfAE); return; Yap_Error(RESOURCE_ERROR_HEAP, TermNil,
"not enough space for new Flag %s", ae->StrOfAE);
return;
} }
fprop->KindOfPE = FlagProperty; fprop->KindOfPE = FlagProperty;
fprop->FlagOfVE = fnum; fprop->FlagOfVE = fnum;
@ -601,8 +597,7 @@ static bool executable(Term inp) {
return Yap_unify(MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)), inp); return Yap_unify(MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)), inp);
} }
static bool sys_thread_id(Term inp) static bool sys_thread_id(Term inp) {
{
CACHE_REGS CACHE_REGS
int pid; int pid;
#ifdef HAVE_GETTID_SYSCALL #ifdef HAVE_GETTID_SYSCALL
@ -618,9 +613,7 @@ static bool sys_thread_id(Term inp)
return Yap_unify(MkIntegerTerm(pid), inp); return Yap_unify(MkIntegerTerm(pid), inp);
} }
static bool setYapFlagInModule(Term tflag, Term t2, Term mod) {
static bool setYapFlagInModule( Term tflag, Term t2, Term mod )
{
CACHE_REGS CACHE_REGS
FlagEntry *fv; FlagEntry *fv;
ModEntry *new = Yap_GetModuleEntry(mod); ModEntry *new = Yap_GetModuleEntry(mod);
@ -628,12 +621,26 @@ static bool setYapFlagInModule( Term tflag, Term t2, Term mod )
return false; return false;
fv = GetFlagProp(AtomOfTerm(tflag)); fv = GetFlagProp(AtomOfTerm(tflag));
if (!fv && !fv->global) { if (!fv && !fv->global) {
Yap_Error(DOMAIN_ERROR_PROLOG_FLAG, tflag, "trying to set unknown module flag"); Yap_Error(DOMAIN_ERROR_PROLOG_FLAG, tflag,
"trying to set unknown module flag");
return false; return false;
} }
if (mod == USER_MODULE && !setYapFlag( tflag, t2) )
return false;
if (mod == USER_MODULE) {
flag_term *tarr = GLOBAL_Flags;
if (!(fv->type(t2)))
return false;
if (fv->helper && !(fv->helper(t2)))
return false;
Term tout = tarr[fv->FlagOfVE].at;
if (IsVarTerm(tout))
Yap_PopTermFromDB(tarr[fv->FlagOfVE].DBT);
if (IsAtomOrIntTerm(t2))
tarr[fv->FlagOfVE].at = t2;
else {
tarr[fv->FlagOfVE].DBT = Yap_StoreTermInDB(t2, 2);
}
}
// module specific stuff now // module specific stuff now
if (fv->FlagOfVE == UNKNOWN_FLAG) { if (fv->FlagOfVE == UNKNOWN_FLAG) {
@ -651,7 +658,10 @@ static bool setYapFlagInModule( Term tflag, Term t2, Term mod )
new->flags |= (UNKNOWN_FAST_FAIL); new->flags |= (UNKNOWN_FAST_FAIL);
return true; return true;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for unknown flag, use one of error, fail or warning.", RepAtom(AtomOfTerm(tflag))->StrOfAE); Yap_Error(
DOMAIN_ERROR_OUT_OF_RANGE, t2,
"bad option %s for unknown flag, use one of error, fail or warning.",
RepAtom(AtomOfTerm(tflag))->StrOfAE);
return false; return false;
} else if (fv->FlagOfVE == DOUBLE_QUOTES_FLAG) { } else if (fv->FlagOfVE == DOUBLE_QUOTES_FLAG) {
return dqf1(new, t2 PASS_REGS); return dqf1(new, t2 PASS_REGS);
@ -663,17 +673,19 @@ static bool setYapFlagInModule( Term tflag, Term t2, Term mod )
new->flags &= ~(M_CHARESCAPE); new->flags &= ~(M_CHARESCAPE);
return true; return true;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2, "bad option %s for character_escapes flag, use true or false", RepAtom(AtomOfTerm(tflag))->StrOfAE); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, t2,
"bad option %s for character_escapes flag, use true or false",
RepAtom(AtomOfTerm(tflag))->StrOfAE);
return false; return false;
} else if (fv->FlagOfVE == BACKQUOTED_STRING_FLAG) { } else if (fv->FlagOfVE == BACKQUOTED_STRING_FLAG) {
return bqf1( new, t2 PASS_REGS );; return bqf1(new, t2 PASS_REGS);
;
} }
// bad key? // bad key?
return false; return false;
} }
static Term getYapFlagInModule( Term tflag, Term mod ) static Term getYapFlagInModule(Term tflag, Term mod) {
{
FlagEntry *fv; FlagEntry *fv;
ModEntry *new = Yap_GetModuleEntry(mod); ModEntry *new = Yap_GetModuleEntry(mod);
if (!mod) if (!mod)
@ -711,7 +723,8 @@ static Term getYapFlagInModule( Term tflag, Term mod )
return TermAtom; return TermAtom;
return TermString; return TermString;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, tflag, "flag %s is not module-scoped", RepAtom(AtomOfTerm(tflag))->StrOfAE); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, tflag, "flag %s is not module-scoped",
RepAtom(AtomOfTerm(tflag))->StrOfAE);
return 0L; return 0L;
} }
@ -725,11 +738,11 @@ static Int cont_yap_flag( USES_REGS1) {
if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) { if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) {
Term modt = CurrentModule; Term modt = CurrentModule;
tflag = Yap_StripModule(tflag, &modt); tflag = Yap_StripModule(tflag, &modt);
while (i != gmax && while (i != gmax && i != UNKNOWN_FLAG && i != CHARACTER_ESCAPES_FLAG &&
i != UNKNOWN_FLAG && i != BACKQUOTED_STRING_FLAG)
i != CHARACTER_ESCAPES_FLAG && i++;
i != BACKQUOTED_STRING_FLAG) i++; if (i == gmax)
if (i == gmax) cut_fail(); cut_fail();
EXTRA_CBACK_ARG(2, 1) = MkIntTerm(i + 1); EXTRA_CBACK_ARG(2, 1) = MkIntTerm(i + 1);
{ {
Term lab = MkAtomTerm(Yap_LookupAtom(global_flags_setup[i].name)); Term lab = MkAtomTerm(Yap_LookupAtom(global_flags_setup[i].name));
@ -749,7 +762,8 @@ static Int cont_yap_flag( USES_REGS1) {
return false; return false;
} }
if (i >= gmax) { if (i >= gmax) {
Yap_unify( ARG1, MkAtomTerm( Yap_LookupAtom(local_flags_setup[i-gmax].name ) ) ); Yap_unify(ARG1,
MkAtomTerm(Yap_LookupAtom(local_flags_setup[i - gmax].name)));
if (i == gmax + lmax - 1) if (i == gmax + lmax - 1)
do_cut(0); do_cut(0);
} else { } else {
@ -774,8 +788,10 @@ static Int yap_flag(USES_REGS1) {
} }
do_cut(0); do_cut(0);
if (!isatom(tflag)) return false; if (!isatom(tflag))
if (!isatom(modt)) return false; return false;
if (!isatom(modt))
return false;
if (IsVarTerm(Deref(ARG2))) { if (IsVarTerm(Deref(ARG2))) {
Term flag = getYapFlagInModule(tflag, modt); Term flag = getYapFlagInModule(tflag, modt);
if (flag == 0) if (flag == 0)
@ -807,9 +823,11 @@ static Int cont_prolog_flag(USES_REGS1) {
if (i >= gmax + lmax) { if (i >= gmax + lmax) {
cut_fail(); cut_fail();
} else if (i >= gmax) { } else if (i >= gmax) {
Yap_unify( ARG1, ( f = MkAtomTerm( Yap_LookupAtom(local_flags_setup[i-gmax].name ) ) )); Yap_unify(ARG1, (f = MkAtomTerm(
Yap_LookupAtom(local_flags_setup[i - gmax].name))));
} else { } else {
Yap_unify( ARG1, (f = MkAtomTerm( Yap_LookupAtom( global_flags_setup[i].name ) ) ) ); Yap_unify(ARG1,
(f = MkAtomTerm(Yap_LookupAtom(global_flags_setup[i].name))));
} }
EXTRA_CBACK_ARG(3, 1) = MkIntTerm(++i); EXTRA_CBACK_ARG(3, 1) = MkIntTerm(++i);
flag = getYapFlag(f); flag = getYapFlag(f);
@ -844,6 +862,41 @@ static Int prolog_flag(USES_REGS1) {
return setYapFlag(Deref(ARG1), Deref(ARG3)); return setYapFlag(Deref(ARG1), Deref(ARG3));
} }
static Int cont_current_prolog_flag(USES_REGS1) {
int i = IntOfTerm(EXTRA_CBACK_ARG(2, 1));
while (i < GLOBAL_flagCount + LOCAL_flagCount) {
int gmax = GLOBAL_flagCount;
int lmax = LOCAL_flagCount;
Term flag, f;
if (i >= gmax + lmax) {
cut_fail();
} else if (i >= gmax) {
Yap_unify(ARG1, (f = MkAtomTerm(
Yap_LookupAtom(local_flags_setup[i - gmax].name))));
} else {
Yap_unify(ARG1,
(f = MkAtomTerm(Yap_LookupAtom(global_flags_setup[i].name))));
}
EXTRA_CBACK_ARG(2, 1) = MkIntTerm(++i);
flag = getYapFlag(f);
if (!Yap_unify(f, ARG2))
return false;
}
cut_fail();
}
static Int current_prolog_flag(USES_REGS1) {
if (IsVarTerm(Deref(ARG1))) {
EXTRA_CBACK_ARG(3, 1) = MkIntTerm(0);
return cont_current_prolog_flag(PASS_REGS1);
}
do_cut(0);
Term flag = getYapFlag(Deref(ARG1));
if (flag == 0)
return false;
return Yap_unify(flag, ARG2);
}
/** @pred current_prolog_flag(? _Flag_,- _Value_) is iso /** @pred current_prolog_flag(? _Flag_,- _Value_) is iso
@ -852,7 +905,7 @@ yap_flag/2 with the second argument unbound, and unifying the
returned second argument with _Value_. returned second argument with _Value_.
*/ */
static Int current_prolog_flag( USES_REGS1 ) { static Int current_prolog_flag2(USES_REGS1) {
Term tflag = Deref(ARG1); Term tflag = Deref(ARG1);
Term tout = 0; Term tout = 0;
FlagEntry *fv; FlagEntry *fv;
@ -882,27 +935,24 @@ static Int current_prolog_flag( USES_REGS1 ) {
return (Yap_unify(ARG2, tout)); return (Yap_unify(ARG2, tout));
} }
void Yap_setModuleFlags(ModEntry *new, ModEntry *cme) void Yap_setModuleFlags(ModEntry *new, ModEntry *cme) {
{
CACHE_REGS CACHE_REGS
Atom at = new->AtomOfME; Atom at = new->AtomOfME;
if (at == AtomProlog || CurrentModule == PROLOG_MODULE) { if (at == AtomProlog || CurrentModule == PROLOG_MODULE) {
new->flags = M_SYSTEM | UNKNOWN_ERROR |M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING; new->flags =
M_SYSTEM | UNKNOWN_ERROR | M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING;
if (at == AtomUser) if (at == AtomUser)
new->flags = UNKNOWN_ERROR | M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING; new->flags = UNKNOWN_ERROR | M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING;
} else if (cme && } else if (cme && cme->flags && cme != new) {
cme->flags && cme != new) {
new->flags = cme->flags; new->flags = cme->flags;
} else { } else {
new->flags = ( UNKNOWN_ERROR | M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING new->flags = (UNKNOWN_ERROR | M_CHARESCAPE | DBLQ_CODES | BCKQ_STRING);
);
} }
// printf("cme=%s new=%s flags=%x\n",cme,at->StrOfAE,new->flags); // printf("cme=%s new=%s flags=%x\n",cme,at->StrOfAE,new->flags);
} }
bool setYapFlag( Term tflag, Term t2 ) bool setYapFlag(Term tflag, Term t2) {
{
FlagEntry *fv; FlagEntry *fv;
flag_term *tarr; flag_term *tarr;
if (IsVarTerm(tflag)) { if (IsVarTerm(tflag)) {
@ -912,8 +962,10 @@ bool setYapFlag( Term tflag, Term t2 )
if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) { if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) {
Term modt; Term modt;
tflag = Yap_StripModule(tflag, &modt); tflag = Yap_StripModule(tflag, &modt);
if (!isatom(tflag)) return false; if (!isatom(tflag))
if (!isatom(modt)) return false; return false;
if (!isatom(modt))
return false;
return setYapFlagInModule(tflag, t2, modt); return setYapFlagInModule(tflag, t2, modt);
} }
if (!IsAtomTerm(tflag)) { if (!IsAtomTerm(tflag)) {
@ -930,13 +982,21 @@ bool setYapFlag( Term tflag, Term t2 )
} else if (fl == TermWarning) { } else if (fl == TermWarning) {
Yap_Warning("Flag %s does not exist", RepAtom(AtomOfTerm(fl))->StrOfAE); Yap_Warning("Flag %s does not exist", RepAtom(AtomOfTerm(fl))->StrOfAE);
} else { } else {
Yap_Error(DOMAIN_ERROR_PROLOG_FLAG, fl, "trying to set unknown flag ~s", AtomName(AtomOfTerm(fl))); Yap_Error(DOMAIN_ERROR_PROLOG_FLAG, fl, "trying to set unknown flag ~s",
AtomName(AtomOfTerm(fl)));
} }
return FALSE; return FALSE;
} }
if (fv->global) if (fv->global) {
switch (fv->FlagOfVE) {
case UNKNOWN_FLAG:
case CHARACTER_ESCAPES_FLAG:
case BACKQUOTED_STRING_FLAG:
return setYapFlagInModule(tflag, t2, CurrentModule);
default:
tarr = GLOBAL_Flags; tarr = GLOBAL_Flags;
else { }
} else {
CACHE_REGS CACHE_REGS
tarr = LOCAL_Flags; tarr = LOCAL_Flags;
} }
@ -955,8 +1015,7 @@ bool setYapFlag( Term tflag, Term t2 )
return true; return true;
} }
Term getYapFlag( Term tflag ) Term getYapFlag(Term tflag) {
{
FlagEntry *fv; FlagEntry *fv;
flag_term *tarr; flag_term *tarr;
if (IsVarTerm(tflag)) { if (IsVarTerm(tflag)) {
@ -966,8 +1025,10 @@ Term getYapFlag( Term tflag )
if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) { if (IsApplTerm(tflag) && FunctorOfTerm(tflag) == FunctorModule) {
Term modt; Term modt;
tflag = Yap_StripModule(tflag, &modt); tflag = Yap_StripModule(tflag, &modt);
if (!isatom(tflag)) return false; if (!isatom(tflag))
if (!isatom(modt)) return false; return false;
if (!isatom(modt))
return false;
return getYapFlagInModule(tflag, modt); return getYapFlagInModule(tflag, modt);
} }
if (!IsAtomTerm(tflag)) { if (!IsAtomTerm(tflag)) {
@ -1037,7 +1098,6 @@ static Int no_source(USES_REGS1) {
return true; return true;
} }
/** /**
@pred source_mode(- _O_,+ _N_) @pred source_mode(- _O_,+ _N_)
@ -1047,9 +1107,7 @@ database. _O_ is unified with the previous state and the mode is set
according to _N_. according to _N_.
*/ */
static Int static Int source_mode(USES_REGS1) {
source_mode( USES_REGS1 )
{
Term targ; Term targ;
bool current = trueGlobalPrologFlag(SOURCE_FLAG); bool current = trueGlobalPrologFlag(SOURCE_FLAG);
if (current && !Yap_unify_constant(ARG1, TermTrue)) if (current && !Yap_unify_constant(ARG1, TermTrue))
@ -1061,14 +1119,14 @@ source_mode( USES_REGS1 )
return true; return true;
} }
static bool setInitialValue(bool bootstrap, flag_func f, const char *s,
static bool flag_term *tarr) {
setInitialValue( bool bootstrap, flag_func f, const char *s,flag_term *tarr )
{
errno = 0; errno = 0;
if (f == boolean) { if (f == boolean) {
if (!bootstrap) { return 0; } if (!bootstrap) {
return 0;
}
if (!strcmp(s, "true")) { if (!strcmp(s, "true")) {
tarr->at = TermTrue; tarr->at = TermTrue;
return true; return true;
@ -1085,14 +1143,18 @@ setInitialValue( bool bootstrap, flag_func f, const char *s,flag_term *tarr )
tarr->at = TermFalse; tarr->at = TermFalse;
return true; return true;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil, "~s should be either true (on) or false (off)", s); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil,
"~s should be either true (on) or false (off)", s);
return false; return false;
} else if (f == nat) { } else if (f == nat) {
if (!bootstrap) { return 0; } if (!bootstrap) {
return 0;
}
UInt r = strtoul(s, NULL, 10); UInt r = strtoul(s, NULL, 10);
Term t; Term t;
if (errno) { if (errno) {
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil, "~s should be a positive integer)", s); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil,
"~s should be a positive integer)", s);
return false; return false;
} }
CACHE_REGS CACHE_REGS
@ -1104,7 +1166,9 @@ setInitialValue( bool bootstrap, flag_func f, const char *s,flag_term *tarr )
} }
return true; return true;
} else if (f == at2n) { } else if (f == at2n) {
if (!bootstrap) { return 0; } if (!bootstrap) {
return 0;
}
if (!strcmp(s, "INT_MAX")) { if (!strcmp(s, "INT_MAX")) {
tarr->at = MkIntTerm(Int_MAX); tarr->at = MkIntTerm(Int_MAX);
return true; return true;
@ -1129,22 +1193,58 @@ setInitialValue( bool bootstrap, flag_func f, const char *s,flag_term *tarr )
tarr->at = MkIntTerm(atol(YAP_NUMERIC_VERSION)); tarr->at = MkIntTerm(atol(YAP_NUMERIC_VERSION));
return true; return true;
} }
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil, "~s should be either true (on) or false (off)", s); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil,
"~s should be either true (on) or false (off)", s);
return false; return false;
} else if (f == isatom) { } else if (f == isatom) {
if (!bootstrap) { return false; } if (!bootstrap) {
return false;
}
Atom r = Yap_LookupAtom(s); Atom r = Yap_LookupAtom(s);
if (errno) { if (errno) {
Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil, "~s should be a positive integer)", s); Yap_Error(DOMAIN_ERROR_OUT_OF_RANGE, TermNil,
"~s should be a positive integer)", s);
tarr->at = TermNil; tarr->at = TermNil;
} }
tarr->at = MkAtomTerm(r); tarr->at = MkAtomTerm(r);
return true; return true;
} else if (f == options) {
CACHE_REGS
char tmp[512];
Term t0;
if (bootstrap) {
return false;
}
t0 = AbsPair(HR);
while (true) {
int i = 0, ch = s[0];
while (ch != '\0' && ch != ';') {
if (ch != ' ')
tmp[i++] = ch;
s++;
ch = *s;
}
tmp[i] = '\0';
HR += 2;
HR[-2] = MkAtomTerm(Yap_LookupAtom(tmp));
if (ch) {
HR[-1] = AbsPair(HR);
s++;
continue;
} else {
HR[-1] = TermNil;
tarr->DBT = Yap_StoreTermInDB(t0, 2);
return true;
}
}
} else { } else {
Term t0; Term t0;
if (bootstrap) { return false; } if (bootstrap) {
return false;
}
CACHE_REGS CACHE_REGS
t0 = Yap_StringToTerm(s, strlen(s)+1, &LOCAL_encoding, GLOBAL_MaxPriority, NULL); t0 = Yap_StringToTerm(s, strlen(s) + 1, &LOCAL_encoding, GLOBAL_MaxPriority,
NULL);
if (!t0) if (!t0)
return false; return false;
if (IsAtomTerm(t0) || IsIntTerm(t0)) { if (IsAtomTerm(t0) || IsIntTerm(t0)) {
@ -1170,32 +1270,28 @@ setInitialValue( bool bootstrap, flag_func f, const char *s,flag_term *tarr )
#define PAR(x, y, z, w) z #define PAR(x, y, z, w) z
typedef enum prolog_flag_property_enum_choices typedef enum prolog_flag_property_enum_choices {
{
PROLOG_FLAG_PROPERTY_DEFS() PROLOG_FLAG_PROPERTY_DEFS()
} prolog_flag_property_choices_t; } prolog_flag_property_choices_t;
#undef PAR #undef PAR
#define PAR(x,y,z, w) { x , y, z, w } #define PAR(x, y, z, w) \
{ x, y, z, w }
static const param2_t prolog_flag_property_defs[] = {
static const param2_t prolog_flag_property_defs[] = PROLOG_FLAG_PROPERTY_DEFS()};
{
PROLOG_FLAG_PROPERTY_DEFS()
};
#undef PAR #undef PAR
static Int static Int
do_prolog_flag_property (Term tflag, Term opts USES_REGS) do_prolog_flag_property(Term tflag,
{ /* Init current_prolog_flag */ Term opts USES_REGS) { /* Init current_prolog_flag */
FlagEntry *fv; FlagEntry *fv;
xarg *args; xarg *args;
prolog_flag_property_choices_t i; prolog_flag_property_choices_t i;
bool rc = true; bool rc = true;
args = Yap_ArgList2ToVector ( opts, prolog_flag_property_defs, PROLOG_FLAG_PROPERTY_END ); args = Yap_ArgList2ToVector(opts, prolog_flag_property_defs,
PROLOG_FLAG_PROPERTY_END);
if (args == NULL) { if (args == NULL) {
return FALSE; return FALSE;
} }
@ -1214,19 +1310,19 @@ do_prolog_flag_property (Term tflag, Term opts USES_REGS)
switch (i) { switch (i) {
case PROLOG_FLAG_PROPERTY_ACCESS: case PROLOG_FLAG_PROPERTY_ACCESS:
if (fv->rw) if (fv->rw)
rc = rc && rc = rc && Yap_unify(TermReadWrite,
Yap_unify(TermReadWrite, args[PROLOG_FLAG_PROPERTY_ACCESS].tvalue); args[PROLOG_FLAG_PROPERTY_ACCESS].tvalue);
else else
rc = rc && rc = rc && Yap_unify(TermReadOnly,
Yap_unify(TermReadOnly, args[PROLOG_FLAG_PROPERTY_ACCESS].tvalue); args[PROLOG_FLAG_PROPERTY_ACCESS].tvalue);
break; break;
case PROLOG_FLAG_PROPERTY_TYPE: case PROLOG_FLAG_PROPERTY_TYPE:
if (fv->type == boolean) if (fv->type == boolean)
rc = rc && rc = rc &&
Yap_unify(TermBoolean, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue); Yap_unify(TermBoolean, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue);
else if (fv->type == isatom) else if (fv->type == isatom)
rc = rc && rc =
Yap_unify(TermAtom, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue); rc && Yap_unify(TermAtom, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue);
else if (fv->type == nat) else if (fv->type == nat)
rc = rc && rc = rc &&
@ -1235,8 +1331,8 @@ do_prolog_flag_property (Term tflag, Term opts USES_REGS)
rc = rc && rc = rc &&
Yap_unify(TermFloat, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue); Yap_unify(TermFloat, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue);
else else
rc = rc && rc =
Yap_unify(TermTerm, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue); rc && Yap_unify(TermTerm, args[PROLOG_FLAG_PROPERTY_TYPE].tvalue);
break; break;
case PROLOG_FLAG_PROPERTY_KEEP: case PROLOG_FLAG_PROPERTY_KEEP:
rc = rc && false; rc = rc && false;
@ -1263,9 +1359,7 @@ do_prolog_flag_property (Term tflag, Term opts USES_REGS)
return rc; return rc;
} }
static Int static Int cont_prolog_flag_property(USES_REGS1) { /* current_prolog_flag */
cont_prolog_flag_property (USES_REGS1)
{ /* current_prolog_flag */
int i = IntOfTerm(EXTRA_CBACK_ARG(2, 1)); int i = IntOfTerm(EXTRA_CBACK_ARG(2, 1));
while (i < GLOBAL_flagCount + LOCAL_flagCount) { while (i < GLOBAL_flagCount + LOCAL_flagCount) {
@ -1278,8 +1372,7 @@ cont_prolog_flag_property (USES_REGS1)
} else if (i >= gmax) { } else if (i >= gmax) {
lab = MkAtomTerm(Yap_LookupAtom(local_flags_setup[i - gmax].name)); lab = MkAtomTerm(Yap_LookupAtom(local_flags_setup[i - gmax].name));
} else { } else {
if (i == UNKNOWN_FLAG || if (i == UNKNOWN_FLAG || i == CHARACTER_ESCAPES_FLAG ||
i == CHARACTER_ESCAPES_FLAG ||
i == BACKQUOTED_STRING_FLAG) { i == BACKQUOTED_STRING_FLAG) {
Term labs[2]; Term labs[2];
labs[0] = MkVarTerm(); labs[0] = MkVarTerm();
@ -1305,12 +1398,11 @@ and `term` (that is, any ground term)
* `access(+_Access_)` with _Access_ one of `read_only` or `read_write` * `access(+_Access_)` with _Access_ one of `read_only` or `read_write`
* `scope(+_Scope_) the flag aplies to a `thread`, to a `module`, or is `global` to the system. * `scope(+_Scope_) the flag aplies to a `thread`, to a `module`, or is
`global` to the system.
*/ */
static Int static Int prolog_flag_property(USES_REGS1) { /* Init current_prolog_flag */
prolog_flag_property (USES_REGS1)
{ /* Init current_prolog_flag */
Term t1 = Deref(ARG1); Term t1 = Deref(ARG1);
/* make valgrind happy by always filling in memory */ /* make valgrind happy by always filling in memory */
EXTRA_CBACK_ARG(2, 1) = MkIntTerm(0); EXTRA_CBACK_ARG(2, 1) = MkIntTerm(0);
@ -1336,10 +1428,7 @@ prolog_flag_property (USES_REGS1)
return false; return false;
} }
static void newFlag(Term fl, Term val) {
static void
newFlag( Term fl, Term val )
{
flag_info f; flag_info f;
int i = GLOBAL_flagCount; int i = GLOBAL_flagCount;
@ -1356,21 +1445,21 @@ newFlag( Term fl, Term val )
} }
} }
static Int static Int do_create_prolog_flag(USES_REGS1) {
do_create_prolog_flag( USES_REGS1 )
{
FlagEntry *fv; FlagEntry *fv;
xarg *args; xarg *args;
prolog_flag_property_choices_t i; prolog_flag_property_choices_t i;
Term tflag = Deref(ARG1), tval = Deref(ARG2), opts = Deref(ARG3); Term tflag = Deref(ARG1), tval = Deref(ARG2), opts = Deref(ARG3);
args = Yap_ArgList2ToVector ( opts, prolog_flag_property_defs, PROLOG_FLAG_PROPERTY_END ); args = Yap_ArgList2ToVector(opts, prolog_flag_property_defs,
PROLOG_FLAG_PROPERTY_END);
if (args == NULL) { if (args == NULL) {
return FALSE; return FALSE;
} }
fv = GetFlagProp(AtomOfTerm(tflag)); fv = GetFlagProp(AtomOfTerm(tflag));
if (fv) { if (fv) {
if (args[PROLOG_FLAG_PROPERTY_KEEP].used && args[PROLOG_FLAG_PROPERTY_KEEP].tvalue == TermTrue) if (args[PROLOG_FLAG_PROPERTY_KEEP].used &&
args[PROLOG_FLAG_PROPERTY_KEEP].tvalue == TermTrue)
return true; return true;
} else { } else {
newFlag(tflag, tval); newFlag(tflag, tval);
@ -1387,8 +1476,7 @@ do_create_prolog_flag( USES_REGS1 )
else else
fv->rw = false; fv->rw = false;
break; break;
case PROLOG_FLAG_PROPERTY_TYPE: case PROLOG_FLAG_PROPERTY_TYPE: {
{
Term ttype = args[PROLOG_FLAG_PROPERTY_TYPE].tvalue; Term ttype = args[PROLOG_FLAG_PROPERTY_TYPE].tvalue;
if (ttype == TermBoolean) if (ttype == TermBoolean)
fv->type = boolean; fv->type = boolean;
@ -1398,11 +1486,9 @@ do_create_prolog_flag( USES_REGS1 )
fv->type = isfloat; fv->type = isfloat;
else else
fv->type = isground; fv->type = isground;
} } break;
break;
case PROLOG_FLAG_PROPERTY_SCOPE: case PROLOG_FLAG_PROPERTY_SCOPE:
return return false;
false;
case PROLOG_FLAG_PROPERTY_END: case PROLOG_FLAG_PROPERTY_END:
break; break;
} }
@ -1410,30 +1496,32 @@ do_create_prolog_flag( USES_REGS1 )
} }
// UNLOCK(GLOBAL_Prolog_Flag[sno].prolog_flaglock); // UNLOCK(GLOBAL_Prolog_Flag[sno].prolog_flaglock);
return true; return true;
} }
/** /**
* Init System Prolog flags. This is done in two phases: * Init System Prolog flags. This is done in two phases:
* early on, it takes care of the atomic flags that are required by other modules; * early on, it takes care of the atomic flags that are required by other
*modules;
* later, it looks at flags that are structured terms * later, it looks at flags that are structured terms
* *
* @param bootstrap: wether this is done before stack initialization, or afterwards. * @param bootstrap: wether this is done before stack initialization, or
*afterwards.
* Complex terms can only be built in the second step. * Complex terms can only be built in the second step.
*/ */
void void Yap_InitFlags(bool bootstrap) {
Yap_InitFlags( bool bootstrap) {
CACHE_REGS CACHE_REGS
tr_fr_ptr tr0 = TR; tr_fr_ptr tr0 = TR;
flag_info *f = flag_info *f = global_flags_setup;
global_flags_setup;
GLOBAL_flagCount = 0; GLOBAL_flagCount = 0;
if (bootstrap) { if (bootstrap) {
GLOBAL_Flags = (union flagTerm *)Yap_AllocCodeSpace(sizeof(union flagTerm)*(2*sizeof(global_flags_setup)/sizeof(flag_info))); GLOBAL_Flags = (union flagTerm *)Yap_AllocCodeSpace(
sizeof(union flagTerm) *
(2 * sizeof(global_flags_setup) / sizeof(flag_info)));
} }
while (f->name != NULL) { while (f->name != NULL) {
bool itf = setInitialValue( bootstrap, f->def, f->init, GLOBAL_Flags+GLOBAL_flagCount ); bool itf = setInitialValue(bootstrap, f->def, f->init,
GLOBAL_Flags + GLOBAL_flagCount);
if (itf) { if (itf) {
initFlag(f, GLOBAL_flagCount, true); initFlag(f, GLOBAL_flagCount, true);
} }
@ -1443,12 +1531,14 @@ Yap_InitFlags( bool bootstrap) {
LOCAL_flagCount = 0; LOCAL_flagCount = 0;
int nflags = sizeof(local_flags_setup) / sizeof(flag_info); int nflags = sizeof(local_flags_setup) / sizeof(flag_info);
if (bootstrap) if (bootstrap)
LOCAL_Flags = (union flagTerm *)Yap_AllocCodeSpace(sizeof(union flagTerm)*nflags); LOCAL_Flags =
f = (union flagTerm *)Yap_AllocCodeSpace(sizeof(union flagTerm) * nflags);
local_flags_setup; f = local_flags_setup;
while (f->name != NULL) { while (f->name != NULL) {
bool itf = setInitialValue( bootstrap, f->def, f->init, LOCAL_Flags+LOCAL_flagCount ); bool itf = setInitialValue(bootstrap, f->def, f->init,
// Term itf = Yap_StringToTerm(f->init, strlen(f->init)+1, LOCAL_encoding, GLOBAL_MaxPriority, &tp); LOCAL_Flags + LOCAL_flagCount);
// Term itf = Yap_StringToTerm(f->init, strlen(f->init)+1,
// LOCAL_encoding, GLOBAL_MaxPriority, &tp);
if (itf) { if (itf) {
initFlag(f, LOCAL_flagCount, false); initFlag(f, LOCAL_flagCount, false);
} }
@ -1456,24 +1546,30 @@ Yap_InitFlags( bool bootstrap) {
f++; f++;
} }
if (!bootstrap) { if (!bootstrap) {
Yap_InitCPredBack("current_prolog_flag", 2, 1, current_prolog_flag, cont_yap_flag, 0); Yap_InitCPredBack("current_prolog_flag", 2, 1, current_prolog_flag,
cont_yap_flag, 0);
TR = tr0; TR = tr0;
/** @pred prolog_flag(? _Flag_,- _Value__) /** @pred prolog_flag(? _Flag_,- _Value__)
Obtain the value for a YAP Prolog flag, same as current_prolog_flag/2_. Obtain the value for a YAP Prolog flag, same as current_prolog_flag/2_.
*/ */
Yap_InitCPredBack("prolog_flag", 3, 1, prolog_flag, cont_yap_flag, 0); Yap_InitCPredBack("prolog_flag", 3, 1, current_prolog_flag, cont_yap_flag,
0);
Yap_InitCPredBack("yap_flag", 3, 1, prolog_flag, cont_yap_flag, 0); Yap_InitCPredBack("yap_flag", 3, 1, prolog_flag, cont_yap_flag, 0);
Yap_InitCPredBack("prolog_flag", 2, 1, prolog_flag, cont_yap_flag, 0); Yap_InitCPredBack("prolog_flag", 2, 1, current_prolog_flag2,
cont_current_prolog_flag, 0);
Yap_InitCPredBack("current_prolog_flag", 2, 1, current_prolog_flag2,
cont_current_prolog_flag, 0);
Yap_InitCPred("set_prolog_flag", 2, set_prolog_flag, SyncPredFlag); Yap_InitCPred("set_prolog_flag", 2, set_prolog_flag, SyncPredFlag);
Yap_InitCPred("$create_prolog_flag", 3, do_create_prolog_flag, SyncPredFlag); Yap_InitCPred("$create_prolog_flag", 3, do_create_prolog_flag,
SyncPredFlag);
Yap_InitCPredBack("yap_flag", 2, 1, yap_flag, cont_yap_flag, 0); Yap_InitCPredBack("yap_flag", 2, 1, yap_flag, cont_yap_flag, 0);
Yap_InitCPredBack("prolog_flag_property", 2, 1, prolog_flag_property,cont_prolog_flag_property, 0); Yap_InitCPredBack("prolog_flag_property", 2, 1, prolog_flag_property,
cont_prolog_flag_property, 0);
Yap_InitCPred("source", 0, source, SyncPredFlag); Yap_InitCPred("source", 0, source, SyncPredFlag);
Yap_InitCPred("no_source", 0, no_source, SyncPredFlag); Yap_InitCPred("no_source", 0, no_source, SyncPredFlag);
Yap_InitCPred("source_mode", 2, source_mode, SyncPredFlag); Yap_InitCPred("source_mode", 2, source_mode, SyncPredFlag);
} }
} }
/* Accessing and changing the flags for a predicate */ /* Accessing and changing the flags for a predicate */