/* pp.c
*
- * Copyright (c) 1991-2000, Larry Wall
+ * Copyright (c) 1991-2001, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
/* variations on pp_null */
-#ifdef I_UNISTD
-#include <unistd.h>
-#endif
-
/* XXX I can't imagine anyone who doesn't have this actually _needs_
it, since pid_t is an integral type.
--AD 2/20/1998
if (PL_op->op_flags & OPf_REF) {
PUSHs(TARG);
RETURN;
+ } else if (LVRET) {
+ if (GIMME == G_SCALAR)
+ Perl_croak(aTHX_ "Can't return array to lvalue scalar context");
+ PUSHs(TARG);
+ RETURN;
}
if (GIMME == G_ARRAY) {
I32 maxarg = AvFILL((AV*)TARG) + 1;
SAVECLEARSV(PL_curpad[PL_op->op_targ]);
if (PL_op->op_flags & OPf_REF)
RETURN;
+ else if (LVRET) {
+ if (GIMME == G_SCALAR)
+ Perl_croak(aTHX_ "Can't return hash to lvalue scalar context");
+ RETURN;
+ }
gimme = GIMME_V;
if (gimme == G_ARRAY) {
RETURNOP(do_kv());
PP(pp_rv2gv)
{
- djSP; dTOPss;
+ djSP; dTOPss;
if (SvROK(sv)) {
wasref:
goto wasref;
}
if (!SvOK(sv) && sv != &PL_sv_undef) {
- /* If this is a 'my' scalar and flag is set then vivify
+ /* If this is a 'my' scalar and flag is set then vivify
* NI-S 1999/05/07
- */
+ */
if (PL_op->op_private & OPpDEREF) {
char *name;
GV *gv;
name = CopSTASHPV(PL_curcop);
gv = newGVgen(name);
}
- sv_upgrade(sv, SVt_RV);
+ if (SvTYPE(sv) < SVt_RV)
+ sv_upgrade(sv, SVt_RV);
SvRV(sv) = (SV*)gv;
SvROK_on(sv);
SvSETMAGIC(sv);
{
djSP; dTARGET; dPOPss;
- if (PL_op->op_flags & OPf_MOD) {
+ if (PL_op->op_flags & OPf_MOD || LVRET) {
if (SvTYPE(TARG) < SVt_PVLV) {
sv_upgrade(TARG, SVt_PVLV);
sv_magic(TARG, Nullsv, '.', Nullch, 0);
if (cv) {
if (CvCLONE(cv))
cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
- if ((PL_op->op_private & OPpLVAL_INTRO) && !CvLVALUE(cv))
- DIE(aTHX_ "Can't modify non-lvalue subroutine call");
+ if ((PL_op->op_private & OPpLVAL_INTRO)) {
+ if (gv && GvCV(gv) == cv && (gv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), FALSE)))
+ cv = GvCV(gv);
+ if (!CvLVALUE(cv))
+ DIE(aTHX_ "Can't modify non-lvalue subroutine call");
+ }
}
else
cv = (CV*)&PL_sv_undef;
char *s = SvPVX(TOPs);
if (strnEQ(s, "CORE::", 6)) {
int code;
-
+
code = keyword(s + 6, SvCUR(TOPs) - 6);
if (code < 0) { /* Overridable. */
#define MAX_ARGS_OP ((sizeof(I32) - 1) * 2)
found:
oa = PL_opargs[i] >> OASHIFT;
while (oa) {
- if (oa & OA_OPTIONAL) {
+ if (oa & OA_OPTIONAL && !seen_question) {
seen_question = 1;
str[n++] = ';';
}
- else if (n && str[0] == ';' && seen_question)
+ else if (n && str[0] == ';' && seen_question)
goto set; /* XXXX system, exec */
- if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF
+ if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF
&& (oa & (OA_OPTIONAL - 1)) <= OA_HVREF) {
str[n++] = '\\';
}
Perl_croak(aTHX_ "Attempt to bless into a reference");
ptr = SvPV(ssv,len);
if (ckWARN(WARN_MISC) && len == 0)
- Perl_warner(aTHX_ WARN_MISC,
+ Perl_warner(aTHX_ WARN_MISC,
"Explicit blessing to '' (assuming package main)");
stash = gv_stashpvn(ptr, len, TRUE);
}
char *elem;
djSP;
STRLEN n_a;
-
+
sv = POPs;
elem = SvPV(sv, n_a);
gv = (GV*)POPs;
PP(pp_multiply)
{
djSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ /* Unless the left argument is integer in range we are going to have to
+ use NV maths. Hence only attempt to coerce the right argument if
+ we know the left is integer. */
+ /* Left operand is defined, so is it IV? */
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+ const UV topmask = (~ (UV)0) << (4 * sizeof (UV));
+ const UV botmask = ~((~ (UV)0) << (4 * sizeof (UV)));
+ UV alow;
+ UV ahigh;
+ UV blow;
+ UV bhigh;
+
+ if (auvok) {
+ alow = SvUVX(TOPm1s);
+ } else {
+ IV aiv = SvIVX(TOPm1s);
+ if (aiv >= 0) {
+ alow = aiv;
+ auvok = TRUE; /* effectively it's a UV now */
+ } else {
+ alow = -aiv; /* abs, auvok == false records sign */
+ }
+ }
+ if (buvok) {
+ blow = SvUVX(TOPs);
+ } else {
+ IV biv = SvIVX(TOPs);
+ if (biv >= 0) {
+ blow = biv;
+ buvok = TRUE; /* effectively it's a UV now */
+ } else {
+ blow = -biv; /* abs, buvok == false records sign */
+ }
+ }
+
+ /* If this does sign extension on unsigned it's time for plan B */
+ ahigh = alow >> (4 * sizeof (UV));
+ alow &= botmask;
+ bhigh = blow >> (4 * sizeof (UV));
+ blow &= botmask;
+ if (ahigh && bhigh) {
+ /* eg 32 bit is at least 0x10000 * 0x10000 == 0x100000000
+ which is overflow. Drop to NVs below. */
+ } else if (!ahigh && !bhigh) {
+ /* eg 32 bit is at most 0xFFFF * 0xFFFF == 0xFFFE0001
+ so the unsigned multiply cannot overflow. */
+ UV product = alow * blow;
+ if (auvok == buvok) {
+ /* -ve * -ve or +ve * +ve gives a +ve result. */
+ SP--;
+ SETu( product );
+ RETURN;
+ } else if (product <= (UV)IV_MIN) {
+ /* 2s complement assumption that (UV)-IV_MIN is correct. */
+ /* -ve result, which could overflow an IV */
+ SP--;
+ SETi( -product );
+ RETURN;
+ } /* else drop to NVs below. */
+ } else {
+ /* One operand is large, 1 small */
+ UV product_middle;
+ if (bhigh) {
+ /* swap the operands */
+ ahigh = bhigh;
+ bhigh = blow; /* bhigh now the temp var for the swap */
+ blow = alow;
+ alow = bhigh;
+ }
+ /* now, ((ahigh * blow) << half_UV_len) + (alow * blow)
+ multiplies can't overflow. shift can, add can, -ve can. */
+ product_middle = ahigh * blow;
+ if (!(product_middle & topmask)) {
+ /* OK, (ahigh * blow) won't lose bits when we shift it. */
+ UV product_low;
+ product_middle <<= (4 * sizeof (UV));
+ product_low = alow * blow;
+
+ /* as for pp_add, UV + something mustn't get smaller.
+ IIRC ANSI mandates this wrapping *behaviour* for
+ unsigned whatever the actual representation*/
+ product_low += product_middle;
+ if (product_low >= product_middle) {
+ /* didn't overflow */
+ if (auvok == buvok) {
+ /* -ve * -ve or +ve * +ve gives a +ve result. */
+ SP--;
+ SETu( product_low );
+ RETURN;
+ } else if (product_low <= (UV)IV_MIN) {
+ /* 2s complement assumption again */
+ /* -ve result, which could overflow an IV */
+ SP--;
+ SETi( -product_low );
+ RETURN;
+ } /* else drop to NVs below. */
+ }
+ } /* product_middle too large */
+ } /* ahigh && bhigh */
+ } /* SvIOK(TOPm1s) */
+ } /* SvIOK(TOPs) */
+#endif
{
dPOPTOPnnrl;
SETn( left * right );
else { /* Note: mark already snarfed by pp_list */
SV *tmpstr = POPs;
STRLEN len;
- bool isutf = DO_UTF8(tmpstr);
+ bool isutf;
SvSetSV(TARG, tmpstr);
SvPV_force(TARG, len);
+ isutf = DO_UTF8(TARG);
if (count != 1) {
if (count < 1)
SvCUR_set(TARG, 0);
PP(pp_subtract)
{
- djSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
+ djSP; dATARGET; bool useleft; tryAMAGICbin(subtr,opASSIGN);
+ useleft = USE_LEFT(TOPm1s);
+#ifdef PERL_PRESERVE_IVUV
+ /* We must see if we can perform the addition with integers if possible,
+ as the integer code detects overflow while the NV code doesn't.
+ If either argument hasn't had a numeric conversion yet attempt to get
+ the IV. It's important to do this now, rather than just assuming that
+ it's not IOK as a PV of "9223372036854775806" may not take well to NV
+ addition, and an SV which is NOK, NV=6.0 ought to be coerced to
+ integer in case the second argument is IV=9223372036854775806
+ We can (now) rely on sv_2iv to do the right thing, only setting the
+ public IOK flag if the value in the NV (or PV) slot is truly integer.
+
+ A side effect is that this also aggressively prefers integer maths over
+ fp maths for integer values. */
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ /* Unless the left argument is integer in range we are going to have to
+ use NV maths. Hence only attempt to coerce the right argument if
+ we know the left is integer. */
+ if (!useleft) {
+ /* left operand is undef, treat as zero. + 0 is identity. */
+ if (SvUOK(TOPs)) {
+ dPOPuv; /* Scary macros. Lets put a sequence point (;) here */
+ if (value <= (UV)IV_MIN) {
+ /* 2s complement assumption. */
+ SETi(-(IV)value);
+ RETURN;
+ } /* else drop through into NVs below */
+ } else {
+ dPOPiv;
+ SETu((UV)-value);
+ RETURN;
+ }
+ } else {
+ /* Left operand is defined, so is it IV? */
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV - IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+ IV result = aiv - biv;
+
+ if (biv >= 0 ? (result < aiv) : (result >= aiv)) {
+ SP--;
+ SETi( result );
+ RETURN;
+ }
+ /* +ve - +ve can't overflow. (worst case 0 - IV_MAX) */
+ /* -ve - -ve can't overflow. (worst case -1 - IV_MIN) */
+ /* -ve - +ve can only overflow too negative. */
+ /* leaving +ve - -ve, which will go UV */
+ if (aiv >= 0 && biv < 0) { /* assert don't need biv <0 */
+ /* 2s complement assumption for IV_MIN */
+ UV result = (UV)aiv + (UV)-biv;
+ /* UV + UV must get bigger. +ve IV + +ve IV +1 can't
+ overflow UV (2s complement assumption */
+ assert (result >= (UV) aiv);
+ SP--;
+ SETu( result );
+ RETURN;
+ }
+ /* Overflow, drop through to NVs */
+ } else if (auvok && buvok) { /* ## UV - UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+ IV result;
+
+ if (auv >= buv) {
+ SP--;
+ SETu( auv - buv );
+ RETURN;
+ }
+ /* Blatant 2s complement assumption. */
+ result = (IV)(auv - buv);
+ if (result < 0) {
+ SP--;
+ SETi( result );
+ RETURN;
+ }
+ /* Overflow on IV - IV, drop through to NVs */
+ } else if (auvok) { /* ## Mixed UV - IV ## */
+ UV auv = SvUVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ if (biv < 0) {
+ /* 2s complement assumptions for IV_MIN */
+ UV result = auv + ((UV)-biv);
+ /* UV + UV can only get bigger... */
+ if (result >= auv) {
+ SP--;
+ SETu( result );
+ RETURN;
+ }
+ /* and if it gets too big for UV then it's NV time. */
+ } else if (auv > (UV)IV_MAX) {
+ /* I think I'm making an implicit 2s complement
+ assumption that IV_MIN == -IV_MAX - 1 */
+ /* biv is >= 0 */
+ UV result = auv - (UV)biv;
+ assert (result <= auv);
+ SP--;
+ SETu( result );
+ RETURN;
+ } else {
+ /* biv is >= 0 */
+ IV result = (IV)auv - biv;
+ assert (result <= (IV)auv);
+ SP--;
+ SETi( result );
+ RETURN;
+ }
+ } else { /* ## Mixed IV - UV ## */
+ IV aiv = SvIVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+ IV result = aiv - (IV)buv; /* 2s complement assumption. */
+
+ /* result must not get larger. */
+ if (result <= aiv) {
+ SP--;
+ SETi( result );
+ RETURN;
+ } /* end of IV-IV / UV-UV / UV-IV / IV-UV */
+ }
+ }
+ }
+ }
+#endif
{
- dPOPTOPnnrl_ul;
- SETn( left - right );
- RETURN;
+ dPOPnv;
+ if (!useleft) {
+ /* left operand is undef, treat as zero - value */
+ SETn(-value);
+ RETURN;
+ }
+ SETn( TOPn - value );
+ RETURN;
}
}
PP(pp_lt)
{
djSP; tryAMAGICbinSET(lt,0);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV < IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ SP--;
+ SETs(boolSV(aiv < biv));
+ RETURN;
+ }
+ if (auvok && buvok) { /* ## UV < UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+
+ SP--;
+ SETs(boolSV(auv < buv));
+ RETURN;
+ }
+ if (auvok) { /* ## UV < IV ## */
+ UV auv;
+ IV biv;
+
+ biv = SvIVX(TOPs);
+ SP--;
+ if (biv < 0) {
+ /* As (a) is a UV, it's >=0, so it cannot be < */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ auv = SvUVX(TOPs);
+ if (auv >= (UV) IV_MAX) {
+ /* As (b) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ SETs(boolSV(auv < (UV)biv));
+ RETURN;
+ }
+ { /* ## IV < UV ## */
+ IV aiv;
+ UV buv;
+
+ aiv = SvIVX(TOPm1s);
+ if (aiv < 0) {
+ /* As (b) is a UV, it's >=0, so it must be < */
+ SP--;
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ buv = SvUVX(TOPs);
+ SP--;
+ if (buv > (UV) IV_MAX) {
+ /* As (a) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ SETs(boolSV((UV)aiv < buv));
+ RETURN;
+ }
+ }
+ }
+#endif
{
dPOPnv;
SETs(boolSV(TOPn < value));
PP(pp_gt)
{
djSP; tryAMAGICbinSET(gt,0);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV > IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ SP--;
+ SETs(boolSV(aiv > biv));
+ RETURN;
+ }
+ if (auvok && buvok) { /* ## UV > UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+
+ SP--;
+ SETs(boolSV(auv > buv));
+ RETURN;
+ }
+ if (auvok) { /* ## UV > IV ## */
+ UV auv;
+ IV biv;
+
+ biv = SvIVX(TOPs);
+ SP--;
+ if (biv < 0) {
+ /* As (a) is a UV, it's >=0, so it must be > */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ auv = SvUVX(TOPs);
+ if (auv > (UV) IV_MAX) {
+ /* As (b) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ SETs(boolSV(auv > (UV)biv));
+ RETURN;
+ }
+ { /* ## IV > UV ## */
+ IV aiv;
+ UV buv;
+
+ aiv = SvIVX(TOPm1s);
+ if (aiv < 0) {
+ /* As (b) is a UV, it's >=0, so it cannot be > */
+ SP--;
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ buv = SvUVX(TOPs);
+ SP--;
+ if (buv >= (UV) IV_MAX) {
+ /* As (a) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ SETs(boolSV((UV)aiv > buv));
+ RETURN;
+ }
+ }
+ }
+#endif
{
dPOPnv;
SETs(boolSV(TOPn > value));
PP(pp_le)
{
djSP; tryAMAGICbinSET(le,0);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV <= IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ SP--;
+ SETs(boolSV(aiv <= biv));
+ RETURN;
+ }
+ if (auvok && buvok) { /* ## UV <= UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+
+ SP--;
+ SETs(boolSV(auv <= buv));
+ RETURN;
+ }
+ if (auvok) { /* ## UV <= IV ## */
+ UV auv;
+ IV biv;
+
+ biv = SvIVX(TOPs);
+ SP--;
+ if (biv < 0) {
+ /* As (a) is a UV, it's >=0, so a cannot be <= */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ auv = SvUVX(TOPs);
+ if (auv > (UV) IV_MAX) {
+ /* As (b) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ SETs(boolSV(auv <= (UV)biv));
+ RETURN;
+ }
+ { /* ## IV <= UV ## */
+ IV aiv;
+ UV buv;
+
+ aiv = SvIVX(TOPm1s);
+ if (aiv < 0) {
+ /* As (b) is a UV, it's >=0, so a must be <= */
+ SP--;
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ buv = SvUVX(TOPs);
+ SP--;
+ if (buv >= (UV) IV_MAX) {
+ /* As (a) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ SETs(boolSV((UV)aiv <= buv));
+ RETURN;
+ }
+ }
+ }
+#endif
{
dPOPnv;
SETs(boolSV(TOPn <= value));
PP(pp_ge)
{
djSP; tryAMAGICbinSET(ge,0);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV >= IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ SP--;
+ SETs(boolSV(aiv >= biv));
+ RETURN;
+ }
+ if (auvok && buvok) { /* ## UV >= UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+
+ SP--;
+ SETs(boolSV(auv >= buv));
+ RETURN;
+ }
+ if (auvok) { /* ## UV >= IV ## */
+ UV auv;
+ IV biv;
+
+ biv = SvIVX(TOPs);
+ SP--;
+ if (biv < 0) {
+ /* As (a) is a UV, it's >=0, so it must be >= */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ auv = SvUVX(TOPs);
+ if (auv >= (UV) IV_MAX) {
+ /* As (b) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ SETs(boolSV(auv >= (UV)biv));
+ RETURN;
+ }
+ { /* ## IV >= UV ## */
+ IV aiv;
+ UV buv;
+
+ aiv = SvIVX(TOPm1s);
+ if (aiv < 0) {
+ /* As (b) is a UV, it's >=0, so a cannot be >= */
+ SP--;
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ buv = SvUVX(TOPs);
+ SP--;
+ if (buv > (UV) IV_MAX) {
+ /* As (a) is an IV, it cannot be > IV_MAX */
+ SETs(&PL_sv_no);
+ RETURN;
+ }
+ SETs(boolSV((UV)aiv >= buv));
+ RETURN;
+ }
+ }
+ }
+#endif
{
dPOPnv;
SETs(boolSV(TOPn >= value));
PP(pp_ne)
{
djSP; tryAMAGICbinSET(ne,0);
+#ifdef PERL_PRESERVE_IVUV
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool auvok = SvUOK(TOPm1s);
+ bool buvok = SvUOK(TOPs);
+
+ if (!auvok && !buvok) { /* ## IV <=> IV ## */
+ IV aiv = SvIVX(TOPm1s);
+ IV biv = SvIVX(TOPs);
+
+ SP--;
+ SETs(boolSV(aiv != biv));
+ RETURN;
+ }
+ if (auvok && buvok) { /* ## UV != UV ## */
+ UV auv = SvUVX(TOPm1s);
+ UV buv = SvUVX(TOPs);
+
+ SP--;
+ SETs(boolSV(auv != buv));
+ RETURN;
+ }
+ { /* ## Mixed IV,UV ## */
+ IV iv;
+ UV uv;
+
+ /* != is commutative so swap if needed (save code) */
+ if (auvok) {
+ /* swap. top of stack (b) is the iv */
+ iv = SvIVX(TOPs);
+ SP--;
+ if (iv < 0) {
+ /* As (a) is a UV, it's >0, so it cannot be == */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ uv = SvUVX(TOPs);
+ } else {
+ iv = SvIVX(TOPm1s);
+ SP--;
+ if (iv < 0) {
+ /* As (b) is a UV, it's >0, so it cannot be == */
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */
+ }
+ /* we know iv is >= 0 */
+ if (uv > (UV) IV_MAX) {
+ SETs(&PL_sv_yes);
+ RETURN;
+ }
+ SETs(boolSV((UV)iv != uv));
+ RETURN;
+ }
+ }
+ }
+#endif
{
dPOPnv;
SETs(boolSV(TOPn != value));
PP(pp_ncmp)
{
djSP; dTARGET; tryAMAGICbin(ncmp,0);
+#ifdef PERL_PRESERVE_IVUV
+ /* Fortunately it seems NaN isn't IOK */
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool leftuvok = SvUOK(TOPm1s);
+ bool rightuvok = SvUOK(TOPs);
+ I32 value;
+ if (!leftuvok && !rightuvok) { /* ## IV <=> IV ## */
+ IV leftiv = SvIVX(TOPm1s);
+ IV rightiv = SvIVX(TOPs);
+
+ if (leftiv > rightiv)
+ value = 1;
+ else if (leftiv < rightiv)
+ value = -1;
+ else
+ value = 0;
+ } else if (leftuvok && rightuvok) { /* ## UV <=> UV ## */
+ UV leftuv = SvUVX(TOPm1s);
+ UV rightuv = SvUVX(TOPs);
+
+ if (leftuv > rightuv)
+ value = 1;
+ else if (leftuv < rightuv)
+ value = -1;
+ else
+ value = 0;
+ } else if (leftuvok) { /* ## UV <=> IV ## */
+ UV leftuv;
+ IV rightiv;
+
+ rightiv = SvIVX(TOPs);
+ if (rightiv < 0) {
+ /* As (a) is a UV, it's >=0, so it cannot be < */
+ value = 1;
+ } else {
+ leftuv = SvUVX(TOPm1s);
+ if (leftuv > (UV) IV_MAX) {
+ /* As (b) is an IV, it cannot be > IV_MAX */
+ value = 1;
+ } else if (leftuv > (UV)rightiv) {
+ value = 1;
+ } else if (leftuv < (UV)rightiv) {
+ value = -1;
+ } else {
+ value = 0;
+ }
+ }
+ } else { /* ## IV <=> UV ## */
+ IV leftiv;
+ UV rightuv;
+
+ leftiv = SvIVX(TOPm1s);
+ if (leftiv < 0) {
+ /* As (b) is a UV, it's >=0, so it must be < */
+ value = -1;
+ } else {
+ rightuv = SvUVX(TOPs);
+ if (rightuv > (UV) IV_MAX) {
+ /* As (a) is an IV, it cannot be > IV_MAX */
+ value = -1;
+ } else if (leftiv > (UV)rightuv) {
+ value = 1;
+ } else if (leftiv < (UV)rightuv) {
+ value = -1;
+ } else {
+ value = 0;
+ }
+ }
+ }
+ SP--;
+ SETi(value);
+ RETURN;
+ }
+ }
+#endif
{
dPOPTOPnnrl;
I32 value;
djSP; dTARGET; tryAMAGICun(neg);
{
dTOPss;
+ int flags = SvFLAGS(sv);
if (SvGMAGICAL(sv))
mg_get(sv);
- if (SvIOKp(sv) && !SvNOKp(sv) && !SvPOKp(sv)) {
+ if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
+ /* It's publicly an integer, or privately an integer-not-float */
+ oops_its_an_int:
if (SvIsUV(sv)) {
if (SvIVX(sv) == IV_MIN) {
+ /* 2s complement assumption. */
SETi(SvIVX(sv)); /* special case: -((UV)IV_MAX+1) == IV_MIN */
RETURN;
}
SETi(-SvIVX(sv));
RETURN;
}
+#ifdef PERL_PRESERVE_IVUV
+ else {
+ SETu((UV)IV_MIN);
+ RETURN;
+ }
+#endif
}
if (SvNIOKp(sv))
SETn(-SvNV(sv));
sv_setsv(TARG, sv);
*SvPV_force(TARG, len) = *s == '-' ? '+' : '-';
}
- else if (DO_UTF8(sv) && *(U8*)s >= 0xc0 && isIDFIRST_utf8((U8*)s)) {
+ else if (DO_UTF8(sv) && UTF8_IS_START(*s) && isIDFIRST_utf8((U8*)s)) {
sv_setpvn(TARG, "-", 1);
sv_catsv(TARG, sv);
}
- else
- sv_setnv(TARG, -SvNV(sv));
+ else {
+ SvIV_please(sv);
+ if (SvIOK(sv))
+ goto oops_its_an_int;
+ sv_setnv(TARG, -SvNV(sv));
+ }
SETTARG;
}
else
send = tmps + len;
while (tmps < send) {
- UV c = utf8_to_uv(tmps, 0, &l, UTF8_ALLOW_ANY);
+ UV c = utf8_to_uv(tmps, send-tmps, &l, UTF8_ALLOW_ANYUV);
tmps += UTF8SKIP(tmps);
targlen += UNISKIP(~c);
nchar++;
if (nwide) {
Newz(0, result, targlen + 1, U8);
while (tmps < send) {
- UV c = utf8_to_uv(tmps, 0, &l, UTF8_ALLOW_ANY);
+ UV c = utf8_to_uv(tmps, send-tmps, &l, UTF8_ALLOW_ANYUV);
tmps += UTF8SKIP(tmps);
result = uv_to_utf8(result, ~c);
}
PP(pp_i_modulo)
{
- djSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
+ djSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
{
dPOPTOPiirl;
if (!right)
#define SEED_C3 269
#define SEED_C5 26107
- dTHR;
#ifndef PERL_NO_DEV_RANDOM
int fd;
#endif
{
djSP; dTARGET;
{
- NV value = TOPn;
- IV iv;
-
- if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs)) {
- iv = SvIVX(TOPs);
- SETi(iv);
- }
- else {
+ NV value;
+ IV iv = TOPi; /* attempt to convert to IV if possible. */
+ /* XXX it's arguable that compiler casting to IV might be subtly
+ different from modf (for numbers inside (IV_MIN,UV_MAX)) in which
+ else preferring IV has introduced a subtle behaviour change bug. OTOH
+ relying on floating point to be accurate is a bug. */
+
+ if (SvIOK(TOPs)) {
+ if (SvIsUV(TOPs)) {
+ UV uv = TOPu;
+ SETu(uv);
+ } else
+ SETi(iv);
+ } else {
+ value = TOPn;
if (value >= 0.0) {
+ if (value < (NV)UV_MAX + 0.5) {
+ SETu(U_V(value));
+ } else {
#if defined(HAS_MODFL) || defined(LONG_DOUBLE_EQUALS_DOUBLE)
- (void)Perl_modf(value, &value);
+ (void)Perl_modf(value, &value);
#else
- double tmp = (double)value;
- (void)Perl_modf(tmp, &tmp);
- value = (NV)tmp;
+ double tmp = (double)value;
+ (void)Perl_modf(tmp, &tmp);
+ value = (NV)tmp;
#endif
+ }
}
- else {
+ else {
+ if (value > (NV)IV_MIN - 0.5) {
+ SETi(I_V(value));
+ } else {
#if defined(HAS_MODFL) || defined(LONG_DOUBLE_EQUALS_DOUBLE)
- (void)Perl_modf(-value, &value);
- value = -value;
+ (void)Perl_modf(-value, &value);
+ value = -value;
#else
- double tmp = (double)value;
- (void)Perl_modf(-tmp, &tmp);
- value = -(NV)tmp;
+ double tmp = (double)value;
+ (void)Perl_modf(-tmp, &tmp);
+ value = -(NV)tmp;
#endif
- }
- iv = I_V(value);
- if (iv == value)
- SETi(iv);
- else
- SETn(value);
+ SETn(value);
+ }
+ }
}
}
RETURN;
{
djSP; dTARGET; tryAMAGICun(abs);
{
- NV value = TOPn;
- IV iv;
-
- if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs) &&
- (iv = SvIVX(TOPs)) != IV_MIN) {
- if (iv < 0)
- iv = -iv;
- SETi(iv);
- }
- else {
+ /* This will cache the NV value if string isn't actually integer */
+ IV iv = TOPi;
+
+ if (SvIOK(TOPs)) {
+ /* IVX is precise */
+ if (SvIsUV(TOPs)) {
+ SETu(TOPu); /* force it to be numeric only */
+ } else {
+ if (iv >= 0) {
+ SETi(iv);
+ } else {
+ if (iv != IV_MIN) {
+ SETi(-iv);
+ } else {
+ /* 2s complement assumption. Also, not really needed as
+ IV_MIN and -IV_MIN should both be %100...00 and NV-able */
+ SETu(IV_MIN);
+ }
+ }
+ }
+ } else{
+ NV value = TOPn;
if (value < 0.0)
- value = -value;
+ value = -value;
SETn(value);
}
}
I32 pos;
I32 rem;
I32 fail;
- I32 lvalue = PL_op->op_flags & OPf_MOD;
+ I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
char *tmps;
I32 arybase = PL_curcop->cop_arybase;
char *repl = 0;
STRLEN repl_len;
+ int num_args = PL_op->op_private & 7;
SvTAINTED_off(TARG); /* decontaminate */
SvUTF8_off(TARG); /* decontaminate */
- if (MAXARG > 2) {
- if (MAXARG > 3) {
+ if (num_args > 2) {
+ if (num_args > 3) {
sv = POPs;
repl = SvPV(sv, repl_len);
}
pos -= arybase;
rem = curlen-pos;
fail = rem;
- if (MAXARG > 2) {
+ if (num_args > 2) {
if (len < 0) {
rem += len;
if (rem < 0)
}
else {
pos += curlen;
- if (MAXARG < 3)
+ if (num_args < 3)
rem = curlen;
else if (len >= 0) {
rem = pos+len;
RETPUSHUNDEF;
}
else {
+ I32 upos = pos;
+ I32 urem = rem;
if (utfcurlen)
sv_pos_u2b(sv, &pos, &rem);
tmps += pos;
SvREFCNT_dec(LvTARG(TARG));
LvTARG(TARG) = SvREFCNT_inc(sv);
}
- LvTARGOFF(TARG) = pos;
- LvTARGLEN(TARG) = rem;
+ LvTARGOFF(TARG) = upos;
+ LvTARGLEN(TARG) = urem;
}
}
SPAGAIN;
register IV size = POPi;
register IV offset = POPi;
register SV *src = POPs;
- I32 lvalue = PL_op->op_flags & OPf_MOD;
+ I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
SvTAINTED_off(TARG); /* decontaminate */
if (lvalue) { /* it's an lvalue! */
PP(pp_ord)
{
djSP; dTARGET;
- UV value;
- SV *tmpsv = POPs;
+ SV *argsv = POPs;
STRLEN len;
- U8 *tmps = (U8*)SvPVx(tmpsv, len);
- STRLEN retlen;
+ U8 *s = (U8*)SvPVx(argsv, len);
- if ((*tmps & 0x80) && DO_UTF8(tmpsv))
- value = utf8_to_uv(tmps, len, &retlen, 0);
- else
- value = (UV)(*tmps & 255);
- XPUSHu(value);
+ XPUSHu(DO_UTF8(argsv) ? utf8_to_uv_simple(s, 0) : (*s & 0xff));
RETURN;
}
(void)SvUPGRADE(TARG,SVt_PV);
- if ((value > 255 && !IN_BYTE) || (value & 0x80 && PL_hints & HINT_UTF8) ) {
- SvGROW(TARG, UTF8_MAXLEN+1);
- tmps = SvPVX(TARG);
- tmps = (char*)uv_to_utf8((U8*)tmps, (UV)value);
+ if (value > 255 && !IN_BYTE) {
+ SvGROW(TARG, UNISKIP(value)+1);
+ tmps = (char*)uv_to_utf8((U8*)SvPVX(TARG), value);
SvCUR_set(TARG, tmps - SvPVX(TARG));
*tmps = '\0';
(void)SvPOK_only(TARG);
sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, n_a)));
#endif
#else
- DIE(aTHX_
+ DIE(aTHX_
"The crypt() function is unimplemented due to excessive paranoia.");
#endif
SETs(TARG);
register U8 *s;
STRLEN slen;
- if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
+ if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && UTF8_IS_START(*s)) {
STRLEN ulen;
- U8 tmpbuf[UTF8_MAXLEN];
+ U8 tmpbuf[UTF8_MAXLEN+1];
U8 *tend;
UV uv = utf8_to_uv(s, slen, &ulen, 0);
register U8 *s;
STRLEN slen;
- if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
+ if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && UTF8_IS_START(*s)) {
STRLEN ulen;
- U8 tmpbuf[UTF8_MAXLEN];
+ U8 tmpbuf[UTF8_MAXLEN+1];
U8 *tend;
UV uv = utf8_to_uv(s, slen, &ulen, 0);
d = SvPVX(TARG);
if (DO_UTF8(sv)) {
while (len) {
- if (*s & 0x80) {
+ if (UTF8_IS_CONTINUED(*s)) {
STRLEN ulen = UTF8SKIP(s);
if (ulen > len)
ulen = len;
djSP; dMARK; dORIGMARK;
register SV** svp;
register AV* av = (AV*)POPs;
- register I32 lval = PL_op->op_flags & OPf_MOD;
+ register I32 lval = (PL_op->op_flags & OPf_MOD || LVRET);
I32 arybase = PL_curcop->cop_arybase;
I32 elem;
{
djSP; dMARK; dORIGMARK;
register HV *hv = (HV*)POPs;
- register I32 lval = PL_op->op_flags & OPf_MOD;
+ register I32 lval = (PL_op->op_flags & OPf_MOD || LVRET);
I32 realhv = (SvTYPE(hv) == SVt_PVHV);
if (!realhv && PL_op->op_private & OPpLVAL_INTRO)
while (++MARK <= SP) {
SV *keysv = *MARK;
SV **svp;
+ I32 preeminent = SvRMAGICAL(hv) ? 1 : hv_exists_ent(hv, keysv, 0);
if (realhv) {
HE *he = hv_fetch_ent(hv, keysv, lval, 0);
svp = he ? &HeVAL(he) : 0;
STRLEN n_a;
DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a));
}
- if (PL_op->op_private & OPpLVAL_INTRO)
- save_helem(hv, keysv, svp);
+ if (PL_op->op_private & OPpLVAL_INTRO) {
+ if (preeminent)
+ save_helem(hv, keysv, svp);
+ else {
+ STRLEN keylen;
+ char *key = SvPV(keysv, keylen);
+ SAVEDELETE(hv, savepvn(key,keylen), keylen);
+ }
+ }
}
*MARK = svp ? *svp : &PL_sv_undef;
}
ix = SvIVx(*lelem);
if (ix < 0)
ix += max;
- else
+ else
ix -= arybase;
if (ix < 0 || ix >= max)
*lelem = &PL_sv_undef;
U8* s = (U8*)SvPVX(TARG);
U8* send = (U8*)(s + len);
while (s < send) {
- if (*s < 0x80) {
+ if (UTF8_IS_ASCII(*s)) {
s++;
continue;
}
else {
+ if (!utf8_to_uv_simple(s, 0))
+ break;
up = (char*)s;
s += UTF8SKIP(s);
down = (char*)(s - 1);
- if (s > send || !((*down & 0xc0) == 0x80)) {
- if (ckWARN_d(WARN_UTF8))
- Perl_warner(aTHX_ WARN_UTF8,
- "Malformed UTF-8 character");
- break;
- }
+ /* reverse this character */
while (down > up) {
tmp = *up;
*up++ = *down;
if (checksum) {
#if LONGSIZE != SIZE32
if (natint) {
- long along;
while (len-- > 0) {
COPYNN(s, &along, sizeof(long));
s += sizeof(long);
#endif
{
while (len-- > 0) {
+#if LONGSIZE > SIZE32 && INTSIZE == SIZE32
+ I32 along;
+#endif
COPY32(s, &along);
#if LONGSIZE > SIZE32
if (along > 2147483647)
EXTEND_MORTAL(len);
#if LONGSIZE != SIZE32
if (natint) {
- long along;
while (len-- > 0) {
COPYNN(s, &along, sizeof(long));
s += sizeof(long);
#endif
{
while (len-- > 0) {
+#if LONGSIZE > SIZE32 && INTSIZE == SIZE32
+ I32 along;
+#endif
COPY32(s, &along);
#if LONGSIZE > SIZE32
if (along > 2147483647)
while ((len > 0) && (s < strend)) {
auv = (auv << 7) | (*s & 0x7f);
- if (!(*s++ & 0x80)) {
+ if (UTF8_IS_ASCII(*s++)) {
bytes = 0;
sv = NEWSV(40, 0);
sv_setuv(sv, auv);
*/
if (PL_uudmap['M'] == 0) {
int i;
-
+
for (i = 0; i < sizeof(PL_uuemap); i += 1)
PL_uudmap[(U8)PL_uuemap[i]] = i;
/*
patcopy++;
continue;
}
- if (datumtype == 'U' && pat == patcopy+1)
+ if (datumtype == 'U' && pat == patcopy+1)
SvUTF8_on(cat);
if (datumtype == '#') {
while (pat < patend && *pat != '\n')
while (len-- > 0) {
fromstr = NEXTFROM;
auint = SvUV(fromstr);
- SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN);
+ SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1);
SvCUR_set(cat, (char*)uv_to_utf8((U8*)SvEND(cat),auint)
- SvPVX(cat));
}
AV *ary;
register IV limit = POPi; /* note, negative is forever */
SV *sv = POPs;
- bool doutf8 = DO_UTF8(sv);
STRLEN len;
register char *s = SvPV(sv, len);
+ bool do_utf8 = DO_UTF8(sv);
char *strend = s + len;
register PMOP *pm;
register REGEXP *rx;
register SV *dstr;
register char *m;
I32 iters = 0;
- I32 maxiters = (strend - s) + 10;
+ STRLEN slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : (strend - s);
+ I32 maxiters = slen + 10;
I32 i;
char *orig;
I32 origlimit = limit;
pm = (PMOP*)POPs;
#endif
if (!pm || !s)
- DIE(aTHX_ "panic: do_split");
+ DIE(aTHX_ "panic: pp_split");
rx = pm->op_pmregexp;
TAINT_IF((pm->op_pmflags & PMf_LOCALE) &&
sv_setpvn(dstr, s, m-s);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
sv_setpvn(dstr, s, m-s);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
s = m;
}
}
- else if ((rx->reganch & RE_USE_INTUIT) && !rx->nparens
+ else if (do_utf8 == ((rx->reganch & ROPT_UTF8) != 0) &&
+ (rx->reganch & RE_USE_INTUIT) && !rx->nparens
&& (rx->reganch & ROPT_CHECK_ALL)
&& !(rx->reganch & ROPT_ANCH)) {
int tail = (rx->reganch & RE_INTUIT_TAIL);
SV *csv = CALLREG_INTUIT_STRING(aTHX_ rx);
len = rx->minlen;
- if (len == 1 && !tail) {
+ if (len == 1 && !(rx->reganch & ROPT_UTF8) && !tail) {
STRLEN n_a;
char c = *SvPV(csv, n_a);
while (--limit) {
sv_setpvn(dstr, s, m-s);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
/* The rx->minlen is in characters but we want to step
* s ahead by bytes. */
- s = m + (doutf8 ? SvCUR(csv) : len);
+ if (do_utf8)
+ s = (char*)utf8_hop((U8*)m, len);
+ else
+ s = m + len; /* Fake \n at the end */
}
}
else {
sv_setpvn(dstr, s, m-s);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
/* The rx->minlen is in characters but we want to step
* s ahead by bytes. */
- s = m + (doutf8 ? SvCUR(csv) : len); /* Fake \n at the end */
+ if (do_utf8)
+ s = (char*)utf8_hop((U8*)m, len);
+ else
+ s = m + len; /* Fake \n at the end */
}
}
}
else {
- maxiters += (strend - s) * rx->nparens;
+ maxiters += slen * rx->nparens;
while (s < strend && --limit
-/* && (!rx->check_substr
+/* && (!rx->check_substr
|| ((s = CALLREG_INTUIT_START(aTHX_ rx, sv, s, strend,
0, NULL))))
*/ && CALLREGEXEC(aTHX_ rx, s, strend, orig,
sv_setpvn(dstr, s, m-s);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
if (rx->nparens) {
dstr = NEWSV(33, 0);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
}
sv_setpvn(dstr, s, l);
if (make_mortal)
sv_2mortal(dstr);
- if (doutf8)
+ if (do_utf8)
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
iters++;
void
Perl_unlock_condpair(pTHX_ void *svv)
{
- dTHR;
MAGIC *mg = mg_find((SV*)svv, 'm');
if (!mg)
projects / p5sagit/p5-mst-13.2.git / blobdiff