/* scope.c
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-1997, 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.
{
dTHR;
stack_sp = sp;
- av_extend(stack, (p - stack_base) + (n) + 128);
+ av_extend(curstack, (p - stack_base) + (n) + 128);
return stack_sp;
}
}
}
-SV *
-save_scalar(gv)
-GV *gv;
+static SV *
+save_scalar_at(sptr)
+SV **sptr;
{
dTHR;
register SV *sv;
- SV *osv = GvSV(gv);
-
- SSCHECK(3);
- SSPUSHPTR(gv);
- SSPUSHPTR(osv);
- SSPUSHINT(SAVEt_SV);
+ SV *osv = *sptr;
- sv = GvSV(gv) = NEWSV(0,0);
+ sv = *sptr = NEWSV(0,0);
if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
sv_upgrade(sv, SvTYPE(osv));
if (SvGMAGICAL(osv)) {
return sv;
}
-#ifdef INLINED_ELSEWHERE
-void
-save_gp(gv)
+SV *
+save_scalar(gv)
GV *gv;
{
dTHR;
- register GP *gp;
- GP *ogp = GvGP(gv);
-
SSCHECK(3);
- SSPUSHPTR(SvREFCNT_inc(gv));
- SSPUSHPTR(ogp);
- SSPUSHINT(SAVEt_GP);
-
- Newz(602,gp, 1, GP);
- GvGP(gv) = gp;
- GvREFCNT(gv) = 1;
- GvSV(gv) = NEWSV(72,0);
- GvLINE(gv) = curcop->cop_line;
- GvEGV(gv) = gv;
+ SSPUSHPTR(gv);
+ SSPUSHPTR(GvSV(gv));
+ SSPUSHINT(SAVEt_SV);
+ return save_scalar_at(&GvSV(gv));
}
-#endif
SV*
save_svref(sptr)
SV **sptr;
{
dTHR;
- register SV *sv;
- SV *osv = *sptr;
-
SSCHECK(3);
- SSPUSHPTR(*sptr);
SSPUSHPTR(sptr);
+ SSPUSHPTR(*sptr);
SSPUSHINT(SAVEt_SVREF);
+ return save_scalar_at(sptr);
+}
- sv = *sptr = NEWSV(0,0);
- if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
- sv_upgrade(sv, SvTYPE(osv));
- if (SvGMAGICAL(osv)) {
- MAGIC* mg;
- bool oldtainted = tainted;
- mg_get(osv);
- if (tainting && tainted && (mg = mg_find(osv, 't'))) {
- SAVESPTR(mg->mg_obj);
- mg->mg_obj = osv;
- }
- SvFLAGS(osv) |= (SvFLAGS(osv) &
- (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
- tainted = oldtainted;
- }
- SvMAGIC(sv) = SvMAGIC(osv);
- SvFLAGS(sv) |= SvMAGICAL(osv);
- localizing = 1;
- SvSETMAGIC(sv);
- localizing = 0;
+void
+save_gp(gv, empty)
+GV *gv;
+I32 empty;
+{
+ dTHR;
+ SSCHECK(6);
+ SSPUSHIV((IV)SvLEN(gv));
+ SvLEN(gv) = 0; /* forget that anything was allocated here */
+ SSPUSHIV((IV)SvCUR(gv));
+ SSPUSHPTR(SvPVX(gv));
+ SvPOK_off(gv);
+ SSPUSHPTR(SvREFCNT_inc(gv));
+ SSPUSHPTR(GvGP(gv));
+ SSPUSHINT(SAVEt_GP);
+
+ if (empty) {
+ register GP *gp;
+ Newz(602, gp, 1, GP);
+ GvGP(gv) = gp_ref(gp);
+ GvSV(gv) = NEWSV(72,0);
+ GvLINE(gv) = curcop->cop_line;
+ GvEGV(gv) = gv;
+ }
+ else {
+ gp_ref(GvGP(gv));
+ GvINTRO_on(gv);
}
- return sv;
}
AV *
GV *gv;
{
dTHR;
+ AV *oav, *av;
+
SSCHECK(3);
SSPUSHPTR(gv);
- SSPUSHPTR(GvAVn(gv));
+ SSPUSHPTR(oav = GvAVn(gv));
SSPUSHINT(SAVEt_AV);
GvAV(gv) = Null(AV*);
- return GvAVn(gv);
+ av = GvAVn(gv);
+ if (SvMAGIC(oav)) {
+ SvMAGIC(av) = SvMAGIC(oav);
+ SvFLAGS(av) |= SvMAGICAL(oav);
+ SvMAGICAL_off(oav);
+ SvMAGIC(oav) = 0;
+ localizing = 1;
+ SvSETMAGIC((SV*)av);
+ localizing = 0;
+ }
+ return av;
}
HV *
GV *gv;
{
dTHR;
+ HV *ohv, *hv;
+
SSCHECK(3);
SSPUSHPTR(gv);
- SSPUSHPTR(GvHVn(gv));
+ SSPUSHPTR(ohv = GvHVn(gv));
SSPUSHINT(SAVEt_HV);
GvHV(gv) = Null(HV*);
- return GvHVn(gv);
+ hv = GvHVn(gv);
+ if (SvMAGIC(ohv)) {
+ SvMAGIC(hv) = SvMAGIC(ohv);
+ SvFLAGS(hv) |= SvMAGICAL(ohv);
+ SvMAGICAL_off(ohv);
+ SvMAGIC(ohv) = 0;
+ localizing = 1;
+ SvSETMAGIC((SV*)hv);
+ localizing = 0;
+ }
+ return hv;
}
void
}
void
+save_I16(intp)
+I16 *intp;
+{
+ dTHR;
+ SSCHECK(3);
+ SSPUSHINT(*intp);
+ SSPUSHPTR(intp);
+ SSPUSHINT(SAVEt_I16);
+}
+
+void
save_iv(ivp)
IV *ivp;
{
}
void
+save_op()
+{
+ dTHR;
+ SSCHECK(2);
+ SSPUSHPTR(op);
+ SSPUSHINT(SAVEt_OP);
+}
+
+void
leave_scope(base)
I32 base;
{
case SAVEt_SV: /* scalar reference */
value = (SV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
- sv = GvSV(gv);
- if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
- SvTYPE(sv) != SVt_PVGV)
- {
- (void)SvUPGRADE(value, SvTYPE(sv));
- SvMAGIC(value) = SvMAGIC(sv);
- SvFLAGS(value) |= SvMAGICAL(sv);
- SvMAGICAL_off(sv);
- SvMAGIC(sv) = 0;
- }
- SvREFCNT_dec(sv);
- GvSV(gv) = value;
- localizing = 2;
- SvSETMAGIC(value);
- localizing = 0;
- break;
+ ptr = &GvSV(gv);
+ goto restore_sv;
case SAVEt_SVREF: /* scalar reference */
+ value = (SV*)SSPOPPTR;
ptr = SSPOPPTR;
+ restore_sv:
sv = *(SV**)ptr;
- value = (SV*)SSPOPPTR;
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
SvTYPE(sv) != SVt_PVGV)
{
SvMAGICAL_off(sv);
SvMAGIC(sv) = 0;
}
+ else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
+ SvTYPE(value) != SVt_PVGV)
+ {
+ SvFLAGS(value) |= (SvFLAGS(value) &
+ (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+ SvMAGICAL_off(value);
+ SvMAGIC(value) = 0;
+ }
SvREFCNT_dec(sv);
*(SV**)ptr = value;
localizing = 2;
case SAVEt_AV: /* array reference */
av = (AV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
- SvREFCNT_dec(GvAV(gv));
+ if (GvAV(gv)) {
+ AV *goner = GvAV(gv);
+ SvMAGIC(av) = SvMAGIC(goner);
+ SvFLAGS(av) |= SvMAGICAL(goner);
+ SvMAGICAL_off(goner);
+ SvMAGIC(goner) = 0;
+ SvREFCNT_dec(goner);
+ }
GvAV(gv) = av;
+ if (SvMAGICAL(av)) {
+ localizing = 2;
+ SvSETMAGIC((SV*)av);
+ localizing = 0;
+ }
break;
case SAVEt_HV: /* hash reference */
hv = (HV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
- SvREFCNT_dec(GvHV(gv));
+ if (GvHV(gv)) {
+ HV *goner = GvHV(gv);
+ SvMAGIC(hv) = SvMAGIC(goner);
+ SvFLAGS(hv) |= SvMAGICAL(goner);
+ SvMAGICAL_off(goner);
+ SvMAGIC(goner) = 0;
+ SvREFCNT_dec(goner);
+ }
GvHV(gv) = hv;
+ if (SvMAGICAL(hv)) {
+ localizing = 2;
+ SvSETMAGIC((SV*)hv);
+ localizing = 0;
+ }
break;
case SAVEt_INT: /* int reference */
ptr = SSPOPPTR;
ptr = SSPOPPTR;
*(I32*)ptr = (I32)SSPOPINT;
break;
+ case SAVEt_I16: /* I16 reference */
+ ptr = SSPOPPTR;
+ *(I16*)ptr = (I16)SSPOPINT;
+ break;
case SAVEt_IV: /* IV reference */
ptr = SSPOPPTR;
*(IV*)ptr = (IV)SSPOPIV;
break;
case SAVEt_NSTAB:
gv = (GV*)SSPOPPTR;
- (void)sv_clear(gv);
+ (void)sv_clear((SV*)gv);
break;
- case SAVEt_GP: /* scalar reference */
+ case SAVEt_GP: /* scalar reference */
ptr = SSPOPPTR;
gv = (GV*)SSPOPPTR;
gp_free(gv);
GvGP(gv) = (GP*)ptr;
+ if (SvPOK(gv) && SvLEN(gv) > 0) {
+ Safefree(SvPVX(gv));
+ }
+ SvPVX(gv) = (char *)SSPOPPTR;
+ SvCUR(gv) = (STRLEN)SSPOPIV;
+ SvLEN(gv) = (STRLEN)SSPOPIV;
SvREFCNT_dec(gv);
break;
case SAVEt_FREESV:
break;
case SAVEt_FREEOP:
ptr = SSPOPPTR;
- curpad = AvARRAY(comppad);
+ if (comppad)
+ curpad = AvARRAY(comppad);
op_free((OP*)ptr);
break;
case SAVEt_FREEPV:
case SAVEt_CLEARSV:
ptr = (void*)&curpad[SSPOPLONG];
sv = *(SV**)ptr;
- if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
+ /* Can clear pad variable in place? */
+ if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv))
croak("panic: leave_scope clearsv");
hv_clear((HV*)sv);
break;
case SVt_PVCV:
- sub_generation++;
- cv_undef((CV*)sv);
+ croak("panic: leave_scope pad code");
+ case SVt_RV:
+ case SVt_IV:
+ case SVt_NV:
+ (void)SvOK_off(sv);
break;
default:
- if (SvPOK(sv) && SvLEN(sv))
- (void)SvOOK_off(sv);
(void)SvOK_off(sv);
+ (void)SvOOK_off(sv);
break;
}
}
savestack_ix -= delta; /* regexp must have croaked */
}
break;
+ case SAVEt_STACK_POS: /* Position on Perl stack */
+ {
+ I32 delta = SSPOPINT;
+ stack_sp = stack_base + delta;
+ }
+ break;
+ case SAVEt_OP:
+ op = (OP*)SSPOPPTR;
+ break;
default:
croak("panic: leave_scope inconsistency");
}
}
#ifdef DEBUGGING
+
void
cx_dump(cx)
CONTEXT* cx;
{
dTHR;
- fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
+ PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), block_type[cx->cx_type]);
if (cx->cx_type != CXt_SUBST) {
- fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
- fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
- fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
- fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
- fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
- fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
- fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
+ PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
+ PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
+ PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
}
switch (cx->cx_type) {
case CXt_NULL:
case CXt_BLOCK:
break;
case CXt_SUB:
- fprintf(stderr, "BLK_SUB.CV = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n",
(long)cx->blk_sub.cv);
- fprintf(stderr, "BLK_SUB.GV = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n",
(long)cx->blk_sub.gv);
- fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n",
(long)cx->blk_sub.dfoutgv);
- fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n",
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
(long)cx->blk_sub.olddepth);
- fprintf(stderr, "BLK_SUB.HASARGS = %d\n",
+ PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
(int)cx->blk_sub.hasargs);
break;
case CXt_EVAL:
- fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
(long)cx->blk_eval.old_in_eval);
- fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
op_name[cx->blk_eval.old_op_type],
op_desc[cx->blk_eval.old_op_type]);
- fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n",
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
cx->blk_eval.old_name);
- fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
(long)cx->blk_eval.old_eval_root);
break;
case CXt_LOOP:
- fprintf(stderr, "BLK_LOOP.LABEL = %s\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
cx->blk_loop.label);
- fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
(long)cx->blk_loop.resetsp);
- fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n",
(long)cx->blk_loop.redo_op);
- fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n",
(long)cx->blk_loop.next_op);
- fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n",
(long)cx->blk_loop.last_op);
- fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
(long)cx->blk_loop.iterix);
- fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n",
(long)cx->blk_loop.iterary);
- fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n",
(long)cx->blk_loop.itervar);
if (cx->blk_loop.itervar)
- fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n",
(long)cx->blk_loop.itersave);
+ PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n",
+ (long)cx->blk_loop.iterlval);
break;
case CXt_SUBST:
- fprintf(stderr, "SB_ITERS = %ld\n",
+ PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
(long)cx->sb_iters);
- fprintf(stderr, "SB_MAXITERS = %ld\n",
+ PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
(long)cx->sb_maxiters);
- fprintf(stderr, "SB_SAFEBASE = %ld\n",
+ PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n",
(long)cx->sb_safebase);
- fprintf(stderr, "SB_ONCE = %ld\n",
+ PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
(long)cx->sb_once);
- fprintf(stderr, "SB_ORIG = %s\n",
+ PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
cx->sb_orig);
- fprintf(stderr, "SB_DSTR = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n",
(long)cx->sb_dstr);
- fprintf(stderr, "SB_TARG = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n",
(long)cx->sb_targ);
- fprintf(stderr, "SB_S = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n",
(long)cx->sb_s);
- fprintf(stderr, "SB_M = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n",
(long)cx->sb_m);
- fprintf(stderr, "SB_STREND = 0x%lx\n",
+ PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n",
(long)cx->sb_strend);
- fprintf(stderr, "SB_SUBBASE = 0x%lx\n",
- (long)cx->sb_subbase);
+ PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%lx\n",
+ (long)cx->sb_rxres);
break;
}
}
projects / p5sagit/p5-mst-13.2.git / blobdiff