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- do not call goal expansion on meta-calls (that is done by undef).
- docs updates
- fix init code
This commit is contained in:
Vítor Santos Costa
2015-12-15 09:28:43 +00:00
parent 14459cce03
commit 15404b3835
124 changed files with 5167 additions and 1597 deletions
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284
C/parser.c
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@@ -39,7 +39,8 @@ extended where necessary with attributes denoting integer precedence or
operator type.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
term ----> subterm(1200) end_of_term_marker
term
----> subterm(1200) end_of_term_marker
subterm(N) ----> term(M) [M <= N]
@@ -163,21 +164,19 @@ typedef struct jmp_buff_struct { sigjmp_buf JmpBuff; } JMPBUFF;
static void GNextToken(CACHE_TYPE1);
static void checkfor(wchar_t, JMPBUFF *CACHE_TYPE);
static Term ParseArgs( Atom, wchar_t, JMPBUFF *, Term CACHE_TYPE);
static Term ParseList( JMPBUFF *CACHE_TYPE);
static Term ParseTerm( int, JMPBUFF *CACHE_TYPE);
static Term ParseArgs(Atom, wchar_t, JMPBUFF *, Term CACHE_TYPE);
static Term ParseList(JMPBUFF *CACHE_TYPE);
static Term ParseTerm(int, JMPBUFF *CACHE_TYPE);
const char *Yap_tokRep(TokEntry *tokptr);
static void
syntax_msg( const char *msg, ...)
{
static void syntax_msg(const char *msg, ...) {
CACHE_REGS
va_list ap;
if (LOCAL_toktide == LOCAL_tokptr) {
va_start(ap, msg);
vsnprintf( LOCAL_FileNameBuf2, YAP_FILENAME_MAX-1, msg, ap );
vsnprintf(LOCAL_FileNameBuf2, YAP_FILENAME_MAX - 1, msg, ap);
LOCAL_ErrorMessage = LOCAL_FileNameBuf2;
LOCAL_Error_TYPE = SYNTAX_ERROR;
va_end(ap);
@@ -225,7 +224,8 @@ syntax_msg( const char *msg, ...)
#define FAIL siglongjmp(FailBuff->JmpBuff, 1)
VarEntry *Yap_LookupVar(const char *var) /* lookup variable in variables table */
VarEntry *
Yap_LookupVar(const char *var) /* lookup variable in variables table */
{
CACHE_REGS
VarEntry *p;
@@ -291,7 +291,7 @@ static Term VarNames(VarEntry *p, Term l USES_REGS) {
t[0] = MkAtomTerm(Yap_LookupAtom(p->VarRep));
if (!IsVarTerm(p->VarAdr))
p->VarAdr = MkVarTerm();
p->VarAdr = MkVarTerm();
t[1] = p->VarAdr;
o = Yap_MkApplTerm(FunctorEq, 2, t);
o = MkPairTerm(o, VarNames(p->VarRight,
@@ -316,7 +316,7 @@ Term Yap_VarNames(VarEntry *p, Term l) {
static Term Singletons(VarEntry *p, Term l USES_REGS) {
if (p != NULL) {
if ( p->VarRep[0] != '_' && p->refs == 1) {
if (p->VarRep[0] != '_' && p->refs == 1) {
Term t[2];
Term o;
@@ -378,7 +378,7 @@ static int IsPrefixOp(Atom op, int *pptr, int *rpptr USES_REGS) {
}
if ((p = opp->Prefix) != 0) {
READ_UNLOCK(opp->OpRWLock);
*pptr = *rpptr = p & MaskPrio;
*pptr = *rpptr = p &MaskPrio;
if (p & DcrrpFlag)
--*rpptr;
return TRUE;
@@ -405,7 +405,7 @@ static int IsInfixOp(Atom op, int *pptr, int *lpptr, int *rpptr USES_REGS) {
}
if ((p = opp->Infix) != 0) {
READ_UNLOCK(opp->OpRWLock);
*pptr = *rpptr = *lpptr = p & MaskPrio;
*pptr = *rpptr = *lpptr = p &MaskPrio;
if (p & DcrrpFlag)
--*rpptr;
if (p & DcrlpFlag)
@@ -434,7 +434,7 @@ static int IsPosfixOp(Atom op, int *pptr, int *lpptr USES_REGS) {
}
if ((p = opp->Posfix) != 0) {
READ_UNLOCK(opp->OpRWLock);
*pptr = *lpptr = p & MaskPrio;
*pptr = *lpptr = p &MaskPrio;
if (p & DcrlpFlag)
--*lpptr;
return (TRUE);
@@ -462,7 +462,7 @@ inline static void checkfor(wchar_t c, JMPBUFF *FailBuff USES_REGS) {
if (LOCAL_tokptr->Tok != Ord(Ponctuation_tok) ||
LOCAL_tokptr->TokInfo != (Term)c) {
char s[1024];
strncpy(s, Yap_tokRep(LOCAL_tokptr), 1023 );
strncpy(s, Yap_tokRep(LOCAL_tokptr), 1023);
syntax_msg("expected to find \'%c\', found %s", c, s);
FAIL;
}
@@ -523,7 +523,7 @@ static int get_quasi_quotation(term_t t, unsigned char **here,
}
#endif /*O_QUASIQUOTATIONS*/
static Term ParseArgs( Atom a, wchar_t close, JMPBUFF *FailBuff,
static Term ParseArgs(Atom a, wchar_t close, JMPBUFF *FailBuff,
Term arg1 USES_REGS) {
int nargs = 0;
Term *p, t;
@@ -543,12 +543,12 @@ static Term ParseArgs( Atom a, wchar_t close, JMPBUFF *FailBuff,
func = Yap_MkFunctor(a, 1);
if (func == NULL) {
syntax_msg("Heap Overflow");
syntax_msg("Heap Overflow");
FAIL;
}
t = Yap_MkApplTerm(func, nargs, p);
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
return TermNil;
}
NextToken;
@@ -561,7 +561,7 @@ static Term ParseArgs( Atom a, wchar_t close, JMPBUFF *FailBuff,
syntax_msg("Trail Overflow");
FAIL;
}
*tp++ = Unsigned(ParseTerm( 999, FailBuff PASS_REGS));
*tp++ = Unsigned(ParseTerm(999, FailBuff PASS_REGS));
ParserAuxSp = (char *)tp;
++nargs;
if (LOCAL_tokptr->Tok != Ord(Ponctuation_tok))
@@ -576,7 +576,7 @@ static Term ParseArgs( Atom a, wchar_t close, JMPBUFF *FailBuff,
* order
*/
if (HR > ASP - (nargs + 1)) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
}
func = Yap_MkFunctor(a, nargs);
@@ -596,7 +596,7 @@ static Term ParseArgs( Atom a, wchar_t close, JMPBUFF *FailBuff,
t = Yap_MkApplTerm(func, nargs, p);
#endif
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
return TermNil;
}
/* check for possible overflow against local stack */
@@ -616,26 +616,22 @@ static Term MakeAccessor(Term t, Functor f USES_REGS) {
return Yap_MkApplTerm(f, 2, tf);
}
static Term ParseList( JMPBUFF *FailBuff USES_REGS) {
static Term ParseList(JMPBUFF *FailBuff USES_REGS) {
Term o;
CELL *to_store;
o = AbsPair(HR);
loop:
to_store = HR;
HR += 2;
to_store[0] = ParseTerm( 999, FailBuff PASS_REGS);
to_store[0] = ParseTerm(999, FailBuff PASS_REGS);
if (LOCAL_tokptr->Tok == Ord(Ponctuation_tok)) {
if (((int)LOCAL_tokptr->TokInfo) == ',') {
NextToken;
if (LOCAL_tokptr->Tok == Ord(Name_tok) &&
strcmp((char *)RepAtom((Atom)(LOCAL_tokptr->TokInfo))->StrOfAE, "..") == 0) {
NextToken;
to_store[1] = ParseTerm( 999, FailBuff PASS_REGS);
} else {
{
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
to_store[1] = TermNil;
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
} else {
to_store[1] = AbsPair(HR);
@@ -644,18 +640,19 @@ loop:
}
} else if (((int)LOCAL_tokptr->TokInfo) == '|') {
NextToken;
to_store[1] = ParseTerm( 999, FailBuff PASS_REGS);
to_store[1] = ParseTerm(999, FailBuff PASS_REGS);
} else {
to_store[1] = MkAtomTerm(AtomNil);
}
} else {
syntax_msg("looking for symbol ',','|' got symbol '%s'", Yap_tokRep(LOCAL_tokptr) );
FAIL;
syntax_msg("looking for symbol ',','|' got symbol '%s'",
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
return (o);
}
static Term ParseTerm( int prio, JMPBUFF *FailBuff USES_REGS) {
static Term ParseTerm(int prio, JMPBUFF *FailBuff USES_REGS) {
/* parse term with priority prio */
Volatile Term t;
Volatile Functor func;
@@ -719,15 +716,15 @@ static Term ParseTerm( int prio, JMPBUFF *FailBuff USES_REGS) {
/* try to parse as a prefix operator */
TRY(
/* build appl on the heap */
func = Yap_MkFunctor((Atom)t, 1);
if (func == NULL) {
syntax_msg( "Heap Overflow" );
func = Yap_MkFunctor((Atom)t, 1); if (func == NULL) {
syntax_msg("Heap Overflow");
FAIL;
} t = ParseTerm( oprprio, FailBuff PASS_REGS);
}
t = ParseTerm(oprprio, FailBuff PASS_REGS);
t = Yap_MkApplTerm(func, 1, &t);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg( "Stack Overflow" );
syntax_msg("Stack Overflow");
FAIL;
} curprio = opprio;
, break;)
@@ -735,7 +732,7 @@ static Term ParseTerm( int prio, JMPBUFF *FailBuff USES_REGS) {
}
if (LOCAL_tokptr->Tok == Ord(Ponctuation_tok) &&
Unsigned(LOCAL_tokptr->TokInfo) == 'l')
t = ParseArgs( (Atom)t, ')', FailBuff, 0L PASS_REGS);
t = ParseArgs((Atom)t, ')', FailBuff, 0L PASS_REGS);
else
t = MkAtomTerm((Atom)t);
break;
@@ -745,52 +742,52 @@ static Term ParseTerm( int prio, JMPBUFF *FailBuff USES_REGS) {
NextToken;
break;
case String_tok: /* build list on the heap */
{
Volatile char *p = (char *)LOCAL_tokptr->TokInfo;
t = Yap_CharsToTDQ(p, CurrentModule, ENC_ISO_LATIN1 PASS_REGS);
if (!t) {
syntax_msg( "could not convert \'%s\'", (char *)LOCAL_tokptr->TokInfo );
FAIL;
}
NextToken;
} break;
case WString_tok: /* build list on the heap */
{
Volatile wchar_t *p = (wchar_t *)LOCAL_tokptr->TokInfo;
t = Yap_WCharsToTDQ(p, CurrentModule PASS_REGS);
if (!t) {
syntax_msg( "could not convert \'%S\'", (wchar_t *)LOCAL_tokptr->TokInfo );
FAIL;
}
NextToken;
} break;
case BQString_tok: /* build list on the heap */
{
Volatile char *p = (char *)LOCAL_tokptr->TokInfo;
case String_tok: /* build list on the heap */
{
Volatile char *p = (char *)LOCAL_tokptr->TokInfo;
t = Yap_CharsToTDQ(p, CurrentModule, LOCAL_encoding PASS_REGS);
if (!t) {
syntax_msg("could not convert \"%s\"", (char *)LOCAL_tokptr->TokInfo);
FAIL;
}
NextToken;
} break;
t = Yap_CharsToTBQ(p, CurrentModule, ENC_ISO_LATIN1 PASS_REGS);
if (!t) {
syntax_msg( "could not convert \'%s\"", (char *)LOCAL_tokptr->TokInfo );
FAIL;
}
NextToken;
} break;
case WBQString_tok: /* build list on the heap */
{
Volatile wchar_t *p = (wchar_t *)LOCAL_tokptr->TokInfo;
t = Yap_WCharsToTBQ(p, CurrentModule PASS_REGS);
if (!t) {
syntax_msg( "could not convert \"%S\"", (wchar_t *)LOCAL_tokptr->TokInfo );
FAIL;
}
NextToken;
} break;
case Var_tok:
case WString_tok: /* build list on the heap */
{
Volatile wchar_t *p = (wchar_t *)LOCAL_tokptr->TokInfo;
t = Yap_WCharsToTDQ(p, CurrentModule PASS_REGS);
if (!t) {
syntax_msg("could not convert \'%S\'", (wchar_t *)LOCAL_tokptr->TokInfo);
FAIL;
}
NextToken;
} break;
case BQString_tok: /* build list on the heap */
{
Volatile char *p = (char *)LOCAL_tokptr->TokInfo;
t = Yap_CharsToTBQ(p, CurrentModule, LOCAL_encoding PASS_REGS);
if (!t) {
syntax_msg("could not convert \'%s\"", (char *)LOCAL_tokptr->TokInfo);
FAIL;
}
NextToken;
} break;
case WBQString_tok: /* build list on the heap */
{
Volatile wchar_t *p = (wchar_t *)LOCAL_tokptr->TokInfo;
t = Yap_WCharsToTBQ(p, CurrentModule PASS_REGS);
if (!t) {
syntax_msg("could not convert \"%S\"", (wchar_t *)LOCAL_tokptr->TokInfo);
FAIL;
}
NextToken;
} break;
case Var_tok:
varinfo = (VarEntry *)(LOCAL_tokptr->TokInfo);
if ((t = varinfo->VarAdr) == TermNil) {
t = varinfo->VarAdr = MkVarTerm();
@@ -799,7 +796,7 @@ case Var_tok:
break;
case Error_tok:
syntax_msg( "found ill-formed \"%s\"", Yap_tokRep(LOCAL_tokptr) );
syntax_msg("found ill-formed \"%s\"", Yap_tokRep(LOCAL_tokptr));
FAIL;
case Ponctuation_tok:
@@ -819,7 +816,7 @@ case Var_tok:
NextToken;
break;
}
t = ParseList( FailBuff PASS_REGS);
t = ParseList(FailBuff PASS_REGS);
checkfor(']', FailBuff PASS_REGS);
break;
case '{':
@@ -834,7 +831,7 @@ case Var_tok:
t = Yap_MkApplTerm(FunctorBraces, 1, &t);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
}
checkfor('}', FailBuff PASS_REGS);
@@ -884,43 +881,46 @@ case Var_tok:
NextToken;
t = ParseTerm(GLOBAL_MaxPriority, FailBuff PASS_REGS);
if (LOCAL_tokptr->Tok != QuasiQuotes_tok) {
syntax_msg( "expected to find quasi quotes, got \"%s\"", , Yap_tokRep(LOCAL_tokptr) );
syntax_msg("expected to find quasi quotes, got \"%s\"", ,
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
if (!(is_quasi_quotation_syntax(t, &at))) {
syntax_msg( "bad quasi quotation syntax, at \"%s\"", Yap_tokRep(LOCAL_tokptr) );
syntax_msg("bad quasi quotation syntax, at \"%s\"",
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
/* Arg 2: the content */
tn = Yap_MkNewApplTerm(SWIFunctorToFunctor(FUNCTOR_quasi_quotation4), 4);
tnp = RepAppl(tn) + 1;
tnp[0] = MkAtomTerm(at);
if (!get_quasi_quotation(Yap_InitSlot(ArgOfTerm(2, tn)),
&qq->text,
if (!get_quasi_quotation(Yap_InitSlot(ArgOfTerm(2, tn)), &qq->text,
qq->text + strlen((const char *)qq->text))) {
syntax_msg( "could not get quasi quotation, at \"%s\"", Yap_tokRep(LOCAL_tokptr) );
FAIL;
syntax_msg("could not get quasi quotation, at \"%s\"",
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
if (positions) {
intptr_t qqend = qq->end.charno;
// set_range_position(positions, -1, qqend PASS_LD);
if (!PL_unify_term(Yap_InitSlot(ArgOfTerm(2, t) ), PL_FUNCTOR,
if (!PL_unify_term(Yap_InitSlot(ArgOfTerm(2, t)), PL_FUNCTOR,
FUNCTOR_minus2, PL_INTPTR,
qq->mid.charno + 2, /* end of | token */
PL_INTPTR, qqend - 2)) /* end minus "|}" */
syntax_msg( "failed to unify quasi quotation, at \"%s\"", Yap_tokRep(LOCAL_tokptr) );
FAIL;
syntax_msg("failed to unify quasi quotation, at \"%s\"",
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
tnp[2] =
Yap_GetFromSlot(LOCAL_varnames); /* Arg 3: the var dictionary */
tnp[2] = Yap_GetFromSlot(LOCAL_varnames); /* Arg 3: the var dictionary */
/* Arg 4: the result */
t = ArgOfTerm(4, tn);
if (!(to = PL_new_term_ref()) ||
!PL_unify_list(LOCAL_qq_tail, to, LOCAL_qq_tail) ||
!PL_unify(to, Yap_InitSlot(tn ))) {
syntax_msg( "failed to unify quasi quotation, at \"%s\"", Yap_tokRep(LOCAL_tokptr) );
!PL_unify(to, Yap_InitSlot(tn))) {
syntax_msg("failed to unify quasi quotation, at \"%s\"",
Yap_tokRep(LOCAL_tokptr));
FAIL;
}
}
@@ -928,7 +928,7 @@ case Var_tok:
NextToken;
break;
default:
syntax_msg( "expected operator, got \'%s\'", Yap_tokRep(LOCAL_tokptr) );
syntax_msg("expected operator, got \'%s\'", Yap_tokRep(LOCAL_tokptr));
FAIL;
}
@@ -941,38 +941,39 @@ case Var_tok:
opprio <= prio && oplprio >= curprio) {
/* try parsing as infix operator */
Volatile int oldprio = curprio;
TRY3(func = Yap_MkFunctor((Atom)LOCAL_tokptr->TokInfo, 2);
if (func == NULL) {
syntax_msg("Heap Overflow");
FAIL;
} NextToken;
{
Term args[2];
args[0] = t;
args[1] = ParseTerm(oprprio, FailBuff PASS_REGS);
t = Yap_MkApplTerm(func, 2, args);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
FAIL;
}
},
curprio = opprio;
opinfo = save_opinfo; continue;, opinfo = save_opinfo;
curprio = oldprio;)
TRY3(
func = Yap_MkFunctor((Atom)LOCAL_tokptr->TokInfo, 2);
if (func == NULL) {
syntax_msg("Heap Overflow");
FAIL;
} NextToken;
{
Term args[2];
args[0] = t;
args[1] = ParseTerm(oprprio, FailBuff PASS_REGS);
t = Yap_MkApplTerm(func, 2, args);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
FAIL;
}
},
curprio = opprio;
opinfo = save_opinfo; continue;, opinfo = save_opinfo;
curprio = oldprio;)
}
if (IsPosfixOp(opinfo, &opprio, &oplprio PASS_REGS) && opprio <= prio &&
oplprio >= curprio) {
/* parse as posfix operator */
Functor func = Yap_MkFunctor((Atom)LOCAL_tokptr->TokInfo, 1);
if (func == NULL) {
syntax_msg("Heap Overflow");
syntax_msg("Heap Overflow");
FAIL;
}
t = Yap_MkApplTerm(func, 1, &t);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
}
curprio = opprio;
@@ -991,7 +992,7 @@ case Var_tok:
t = Yap_MkApplTerm(FunctorComma, 2, args);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
}
curprio = 1000;
@@ -1006,7 +1007,7 @@ case Var_tok:
t = Yap_MkApplTerm(FunctorVBar, 2, args);
/* check for possible overflow against local stack */
if (HR > ASP - 4096) {
syntax_msg("Stack Overflow");
syntax_msg("Stack Overflow");
FAIL;
}
curprio = opprio;
@@ -1021,7 +1022,7 @@ case Var_tok:
IsPosfixOp(AtomEmptySquareBrackets, &opprio,
&oplprio PASS_REGS) &&
opprio <= prio && oplprio >= curprio) {
t = ParseArgs( AtomEmptySquareBrackets, ']', FailBuff, t PASS_REGS);
t = ParseArgs(AtomEmptySquareBrackets, ']', FailBuff, t PASS_REGS);
t = MakeAccessor(t, FunctorEmptySquareBrackets PASS_REGS);
curprio = opprio;
continue;
@@ -1029,14 +1030,14 @@ case Var_tok:
IsPosfixOp(AtomEmptyCurlyBrackets, &opprio,
&oplprio PASS_REGS) &&
opprio <= prio && oplprio >= curprio) {
t = ParseArgs( AtomEmptyCurlyBrackets, '}', FailBuff, t PASS_REGS);
t = ParseArgs(AtomEmptyCurlyBrackets, '}', FailBuff, t PASS_REGS);
t = MakeAccessor(t, FunctorEmptyCurlyBrackets PASS_REGS);
curprio = opprio;
continue;
}
}
if (LOCAL_tokptr->Tok <= Ord(WString_tok)) {
syntax_msg( "expected operator, got \'%s\'", Yap_tokRep(LOCAL_tokptr) );
syntax_msg("expected operator, got \'%s\'", Yap_tokRep(LOCAL_tokptr));
FAIL;
}
break;
@@ -1048,28 +1049,27 @@ Term Yap_Parse(UInt prio) {
CACHE_REGS
Volatile Term t;
JMPBUFF FailBuff;
yhandle_t sls = Yap_StartSlots();
yhandle_t sls = Yap_StartSlots();
if (!sigsetjmp(FailBuff.JmpBuff, 0)) {
t = ParseTerm(prio, &FailBuff PASS_REGS);
#if DEBUG
if (GLOBAL_Option['p' - 'a' + 1]) {
Yap_DebugPutc(stderr, '[');
if (t==0) Yap_DebugPlWrite(MkIntTerm(0));
else Yap_DebugPlWrite(t);
Yap_DebugPutc(stderr, ']');
Yap_DebugPutc(stderr, '\n');
}
if (GLOBAL_Option['p' - 'a' + 1]) {
Yap_DebugPutc(stderr, '[');
if (t == 0)
Yap_DebugPlWrite(MkIntTerm(0));
else
Yap_DebugPlWrite(t);
Yap_DebugPutc(stderr, ']');
Yap_DebugPutc(stderr, '\n');
}
#endif
Yap_CloseSlots( sls );
if (LOCAL_tokptr != NULL &&
LOCAL_tokptr->Tok != Ord(eot_tok)
) {
Yap_CloseSlots(sls);
if (LOCAL_tokptr != NULL && LOCAL_tokptr->Tok != Ord(eot_tok)) {
t = 0;
}
if (t != 0 &&
LOCAL_Error_TYPE == SYNTAX_ERROR) {
if (t != 0 && LOCAL_Error_TYPE == SYNTAX_ERROR) {
LOCAL_Error_TYPE = YAP_NO_ERROR;
LOCAL_ErrorMessage = NULL;
}
@@ -1077,7 +1077,7 @@ Term Yap_Parse(UInt prio) {
// return (0L);
return t;
}
Yap_CloseSlots( sls );
Yap_CloseSlots(sls);
return (0);
}