1054 lines
23 KiB
C
1054 lines
23 KiB
C
/* scope.c
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*
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* Copyright (c) 1991-2000, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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/*
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* "For the fashion of Minas Tirith was such that it was built on seven
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* levels..."
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*/
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#include "EXTERN.h"
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#define PERL_IN_SCOPE_C
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#include "perl.h"
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#if defined(PERL_FLEXIBLE_EXCEPTIONS)
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void *
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Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
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protect_body_t body, ...)
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{
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void *ret;
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va_list args;
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va_start(args, body);
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ret = vdefault_protect(pcur_env, excpt, body, &args);
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va_end(args);
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return ret;
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}
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void *
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Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
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protect_body_t body, va_list *args)
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{
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dTHR;
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int ex;
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void *ret;
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JMPENV_PUSH(ex);
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if (ex)
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ret = NULL;
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else
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ret = CALL_FPTR(body)(aTHX_ *args);
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*excpt = ex;
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JMPENV_POP;
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return ret;
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}
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#endif
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SV**
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Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
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{
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dTHR;
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#if defined(DEBUGGING) && !defined(USE_THREADS)
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static int growing = 0;
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if (growing++)
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abort();
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#endif
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PL_stack_sp = sp;
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#ifndef STRESS_REALLOC
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av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
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#else
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av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
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#endif
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#if defined(DEBUGGING) && !defined(USE_THREADS)
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growing--;
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#endif
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return PL_stack_sp;
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}
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#ifndef STRESS_REALLOC
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#define GROW(old) ((old) * 3 / 2)
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#else
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#define GROW(old) ((old) + 1)
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#endif
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PERL_SI *
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Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
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{
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PERL_SI *si;
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New(56, si, 1, PERL_SI);
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si->si_stack = newAV();
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AvREAL_off(si->si_stack);
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av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
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AvALLOC(si->si_stack)[0] = &PL_sv_undef;
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AvFILLp(si->si_stack) = 0;
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si->si_prev = 0;
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si->si_next = 0;
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si->si_cxmax = cxitems - 1;
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si->si_cxix = -1;
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si->si_type = PERLSI_UNDEF;
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New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
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return si;
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}
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I32
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Perl_cxinc(pTHX)
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{
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dTHR;
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cxstack_max = GROW(cxstack_max);
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Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
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return cxstack_ix + 1;
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}
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void
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Perl_push_return(pTHX_ OP *retop)
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{
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dTHR;
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if (PL_retstack_ix == PL_retstack_max) {
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PL_retstack_max = GROW(PL_retstack_max);
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Renew(PL_retstack, PL_retstack_max, OP*);
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}
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PL_retstack[PL_retstack_ix++] = retop;
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}
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OP *
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Perl_pop_return(pTHX)
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{
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dTHR;
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if (PL_retstack_ix > 0)
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return PL_retstack[--PL_retstack_ix];
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else
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return Nullop;
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}
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void
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Perl_push_scope(pTHX)
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{
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dTHR;
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if (PL_scopestack_ix == PL_scopestack_max) {
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PL_scopestack_max = GROW(PL_scopestack_max);
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Renew(PL_scopestack, PL_scopestack_max, I32);
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}
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PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
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}
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void
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Perl_pop_scope(pTHX)
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{
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dTHR;
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I32 oldsave = PL_scopestack[--PL_scopestack_ix];
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LEAVE_SCOPE(oldsave);
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}
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void
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Perl_markstack_grow(pTHX)
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{
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dTHR;
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I32 oldmax = PL_markstack_max - PL_markstack;
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I32 newmax = GROW(oldmax);
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Renew(PL_markstack, newmax, I32);
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PL_markstack_ptr = PL_markstack + oldmax;
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PL_markstack_max = PL_markstack + newmax;
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}
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void
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Perl_savestack_grow(pTHX)
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{
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dTHR;
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PL_savestack_max = GROW(PL_savestack_max) + 4;
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Renew(PL_savestack, PL_savestack_max, ANY);
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}
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#undef GROW
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void
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Perl_tmps_grow(pTHX_ I32 n)
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{
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dTHR;
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#ifndef STRESS_REALLOC
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if (n < 128)
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n = (PL_tmps_max < 512) ? 128 : 512;
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#endif
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PL_tmps_max = PL_tmps_ix + n + 1;
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Renew(PL_tmps_stack, PL_tmps_max, SV*);
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}
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void
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Perl_free_tmps(pTHX)
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{
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dTHR;
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/* XXX should tmps_floor live in cxstack? */
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I32 myfloor = PL_tmps_floor;
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while (PL_tmps_ix > myfloor) { /* clean up after last statement */
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SV* sv = PL_tmps_stack[PL_tmps_ix];
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PL_tmps_stack[PL_tmps_ix--] = Nullsv;
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if (sv) {
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SvTEMP_off(sv);
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SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
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}
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}
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}
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STATIC SV *
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S_save_scalar_at(pTHX_ SV **sptr)
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{
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dTHR;
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register SV *sv;
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SV *osv = *sptr;
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sv = *sptr = NEWSV(0,0);
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if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
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sv_upgrade(sv, SvTYPE(osv));
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if (SvGMAGICAL(osv)) {
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MAGIC* mg;
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bool oldtainted = PL_tainted;
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mg_get(osv);
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if (PL_tainting && PL_tainted && (mg = mg_find(osv, 't'))) {
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SAVESPTR(mg->mg_obj);
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mg->mg_obj = osv;
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}
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SvFLAGS(osv) |= (SvFLAGS(osv) &
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(SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
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PL_tainted = oldtainted;
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}
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SvMAGIC(sv) = SvMAGIC(osv);
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SvFLAGS(sv) |= SvMAGICAL(osv);
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PL_localizing = 1;
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SvSETMAGIC(sv);
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PL_localizing = 0;
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}
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return sv;
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}
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SV *
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Perl_save_scalar(pTHX_ GV *gv)
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{
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dTHR;
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SV **sptr = &GvSV(gv);
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SSCHECK(3);
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SSPUSHPTR(SvREFCNT_inc(gv));
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SSPUSHPTR(SvREFCNT_inc(*sptr));
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SSPUSHINT(SAVEt_SV);
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return save_scalar_at(sptr);
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}
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SV*
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Perl_save_svref(pTHX_ SV **sptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(sptr);
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SSPUSHPTR(SvREFCNT_inc(*sptr));
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SSPUSHINT(SAVEt_SVREF);
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return save_scalar_at(sptr);
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}
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/* Like save_svref(), but doesn't deal with magic. Can be used to
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* restore a global SV to its prior contents, freeing new value. */
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void
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Perl_save_generic_svref(pTHX_ SV **sptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(sptr);
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SSPUSHPTR(SvREFCNT_inc(*sptr));
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SSPUSHINT(SAVEt_GENERIC_SVREF);
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}
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void
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Perl_save_gp(pTHX_ GV *gv, I32 empty)
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{
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dTHR;
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SSCHECK(6);
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SSPUSHIV((IV)SvLEN(gv));
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SvLEN(gv) = 0; /* forget that anything was allocated here */
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SSPUSHIV((IV)SvCUR(gv));
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SSPUSHPTR(SvPVX(gv));
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SvPOK_off(gv);
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SSPUSHPTR(SvREFCNT_inc(gv));
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SSPUSHPTR(GvGP(gv));
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SSPUSHINT(SAVEt_GP);
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if (empty) {
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register GP *gp;
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Newz(602, gp, 1, GP);
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if (GvCVu(gv))
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PL_sub_generation++; /* taking a method out of circulation */
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if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
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gp->gp_io = newIO();
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IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
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}
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GvGP(gv) = gp_ref(gp);
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GvSV(gv) = NEWSV(72,0);
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GvLINE(gv) = CopLINE(PL_curcop);
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GvEGV(gv) = gv;
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}
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else {
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gp_ref(GvGP(gv));
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GvINTRO_on(gv);
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}
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}
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AV *
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Perl_save_ary(pTHX_ GV *gv)
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{
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dTHR;
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AV *oav = GvAVn(gv);
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AV *av;
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if (!AvREAL(oav) && AvREIFY(oav))
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av_reify(oav);
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SSCHECK(3);
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SSPUSHPTR(gv);
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SSPUSHPTR(oav);
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SSPUSHINT(SAVEt_AV);
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GvAV(gv) = Null(AV*);
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av = GvAVn(gv);
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if (SvMAGIC(oav)) {
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SvMAGIC(av) = SvMAGIC(oav);
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SvFLAGS((SV*)av) |= SvMAGICAL(oav);
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SvMAGICAL_off(oav);
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SvMAGIC(oav) = 0;
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PL_localizing = 1;
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SvSETMAGIC((SV*)av);
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PL_localizing = 0;
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}
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return av;
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}
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HV *
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Perl_save_hash(pTHX_ GV *gv)
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{
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dTHR;
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HV *ohv, *hv;
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SSCHECK(3);
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SSPUSHPTR(gv);
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SSPUSHPTR(ohv = GvHVn(gv));
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SSPUSHINT(SAVEt_HV);
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GvHV(gv) = Null(HV*);
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hv = GvHVn(gv);
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if (SvMAGIC(ohv)) {
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SvMAGIC(hv) = SvMAGIC(ohv);
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SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
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SvMAGICAL_off(ohv);
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SvMAGIC(ohv) = 0;
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PL_localizing = 1;
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SvSETMAGIC((SV*)hv);
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PL_localizing = 0;
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}
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return hv;
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}
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void
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Perl_save_item(pTHX_ register SV *item)
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{
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dTHR;
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register SV *sv = NEWSV(0,0);
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sv_setsv(sv,item);
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SSCHECK(3);
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SSPUSHPTR(item); /* remember the pointer */
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SSPUSHPTR(sv); /* remember the value */
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SSPUSHINT(SAVEt_ITEM);
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}
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void
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Perl_save_int(pTHX_ int *intp)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHINT(*intp);
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SSPUSHPTR(intp);
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SSPUSHINT(SAVEt_INT);
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}
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void
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Perl_save_long(pTHX_ long int *longp)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHLONG(*longp);
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SSPUSHPTR(longp);
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SSPUSHINT(SAVEt_LONG);
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}
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void
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Perl_save_I32(pTHX_ I32 *intp)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHINT(*intp);
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SSPUSHPTR(intp);
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SSPUSHINT(SAVEt_I32);
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}
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void
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Perl_save_I16(pTHX_ I16 *intp)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHINT(*intp);
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SSPUSHPTR(intp);
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SSPUSHINT(SAVEt_I16);
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}
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void
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Perl_save_I8(pTHX_ I8 *bytep)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHINT(*bytep);
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SSPUSHPTR(bytep);
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SSPUSHINT(SAVEt_I8);
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}
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void
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Perl_save_iv(pTHX_ IV *ivp)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHIV(*ivp);
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SSPUSHPTR(ivp);
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SSPUSHINT(SAVEt_IV);
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}
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/* Cannot use save_sptr() to store a char* since the SV** cast will
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* force word-alignment and we'll miss the pointer.
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*/
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void
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Perl_save_pptr(pTHX_ char **pptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(*pptr);
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SSPUSHPTR(pptr);
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SSPUSHINT(SAVEt_PPTR);
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}
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void
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Perl_save_vptr(pTHX_ void *ptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(*(char**)ptr);
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SSPUSHPTR(ptr);
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SSPUSHINT(SAVEt_VPTR);
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}
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void
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Perl_save_sptr(pTHX_ SV **sptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(*sptr);
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SSPUSHPTR(sptr);
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SSPUSHINT(SAVEt_SPTR);
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}
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SV **
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Perl_save_threadsv(pTHX_ PADOFFSET i)
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{
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#ifdef USE_THREADS
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dTHR;
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SV **svp = &THREADSV(i); /* XXX Change to save by offset */
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DEBUG_S(PerlIO_printf(Perl_debug_log, "save_threadsv %"UVuf": %p %p:%s\n",
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(UV)i, svp, *svp, SvPEEK(*svp)));
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save_svref(svp);
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return svp;
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#else
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Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
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return 0;
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#endif /* USE_THREADS */
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}
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void
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Perl_save_nogv(pTHX_ GV *gv)
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{
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dTHR;
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SSCHECK(2);
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SSPUSHPTR(gv);
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SSPUSHINT(SAVEt_NSTAB);
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}
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void
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Perl_save_hptr(pTHX_ HV **hptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(*hptr);
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SSPUSHPTR(hptr);
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SSPUSHINT(SAVEt_HPTR);
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}
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void
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Perl_save_aptr(pTHX_ AV **aptr)
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{
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dTHR;
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SSCHECK(3);
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SSPUSHPTR(*aptr);
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SSPUSHPTR(aptr);
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SSPUSHINT(SAVEt_APTR);
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}
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void
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Perl_save_freesv(pTHX_ SV *sv)
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{
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dTHR;
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SSCHECK(2);
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SSPUSHPTR(sv);
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SSPUSHINT(SAVEt_FREESV);
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}
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void
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Perl_save_freeop(pTHX_ OP *o)
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{
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dTHR;
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SSCHECK(2);
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SSPUSHPTR(o);
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SSPUSHINT(SAVEt_FREEOP);
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}
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|
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void
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Perl_save_freepv(pTHX_ char *pv)
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{
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dTHR;
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SSCHECK(2);
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SSPUSHPTR(pv);
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SSPUSHINT(SAVEt_FREEPV);
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}
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|
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void
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Perl_save_clearsv(pTHX_ SV **svp)
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{
|
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dTHR;
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SSCHECK(2);
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SSPUSHLONG((long)(svp-PL_curpad));
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SSPUSHINT(SAVEt_CLEARSV);
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}
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|
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void
|
|
Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
|
|
{
|
|
dTHR;
|
|
SSCHECK(4);
|
|
SSPUSHINT(klen);
|
|
SSPUSHPTR(key);
|
|
SSPUSHPTR(SvREFCNT_inc(hv));
|
|
SSPUSHINT(SAVEt_DELETE);
|
|
}
|
|
|
|
void
|
|
Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
|
|
{
|
|
dTHR;
|
|
register SV *sv;
|
|
register I32 i;
|
|
|
|
for (i = 1; i <= maxsarg; i++) {
|
|
sv = NEWSV(0,0);
|
|
sv_setsv(sv,sarg[i]);
|
|
SSCHECK(3);
|
|
SSPUSHPTR(sarg[i]); /* remember the pointer */
|
|
SSPUSHPTR(sv); /* remember the value */
|
|
SSPUSHINT(SAVEt_ITEM);
|
|
}
|
|
}
|
|
|
|
void
|
|
Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
|
|
{
|
|
dTHR;
|
|
SSCHECK(3);
|
|
SSPUSHDPTR(f);
|
|
SSPUSHPTR(p);
|
|
SSPUSHINT(SAVEt_DESTRUCTOR);
|
|
}
|
|
|
|
void
|
|
Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
|
|
{
|
|
dTHR;
|
|
SSCHECK(3);
|
|
SSPUSHDXPTR(f);
|
|
SSPUSHPTR(p);
|
|
SSPUSHINT(SAVEt_DESTRUCTOR_X);
|
|
}
|
|
|
|
void
|
|
Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
|
|
{
|
|
dTHR;
|
|
SSCHECK(4);
|
|
SSPUSHPTR(SvREFCNT_inc(av));
|
|
SSPUSHINT(idx);
|
|
SSPUSHPTR(SvREFCNT_inc(*sptr));
|
|
SSPUSHINT(SAVEt_AELEM);
|
|
save_scalar_at(sptr);
|
|
}
|
|
|
|
void
|
|
Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
|
|
{
|
|
dTHR;
|
|
SSCHECK(4);
|
|
SSPUSHPTR(SvREFCNT_inc(hv));
|
|
SSPUSHPTR(SvREFCNT_inc(key));
|
|
SSPUSHPTR(SvREFCNT_inc(*sptr));
|
|
SSPUSHINT(SAVEt_HELEM);
|
|
save_scalar_at(sptr);
|
|
}
|
|
|
|
void
|
|
Perl_save_op(pTHX)
|
|
{
|
|
dTHR;
|
|
SSCHECK(2);
|
|
SSPUSHPTR(PL_op);
|
|
SSPUSHINT(SAVEt_OP);
|
|
}
|
|
|
|
I32
|
|
Perl_save_alloc(pTHX_ I32 size, I32 pad)
|
|
{
|
|
dTHR;
|
|
register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
|
|
- (char*)PL_savestack);
|
|
register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
|
|
|
|
/* SSCHECK may not be good enough */
|
|
while (PL_savestack_ix + elems + 2 > PL_savestack_max)
|
|
savestack_grow();
|
|
|
|
PL_savestack_ix += elems;
|
|
SSPUSHINT(elems);
|
|
SSPUSHINT(SAVEt_ALLOC);
|
|
return start;
|
|
}
|
|
|
|
void
|
|
Perl_leave_scope(pTHX_ I32 base)
|
|
{
|
|
dTHR;
|
|
register SV *sv;
|
|
register SV *value;
|
|
register GV *gv;
|
|
register AV *av;
|
|
register HV *hv;
|
|
register void* ptr;
|
|
I32 i;
|
|
|
|
if (base < -1)
|
|
Perl_croak(aTHX_ "panic: corrupt saved stack index");
|
|
while (PL_savestack_ix > base) {
|
|
switch (SSPOPINT) {
|
|
case SAVEt_ITEM: /* normal string */
|
|
value = (SV*)SSPOPPTR;
|
|
sv = (SV*)SSPOPPTR;
|
|
sv_replace(sv,value);
|
|
PL_localizing = 2;
|
|
SvSETMAGIC(sv);
|
|
PL_localizing = 0;
|
|
break;
|
|
case SAVEt_SV: /* scalar reference */
|
|
value = (SV*)SSPOPPTR;
|
|
gv = (GV*)SSPOPPTR;
|
|
ptr = &GvSV(gv);
|
|
SvREFCNT_dec(gv);
|
|
goto restore_sv;
|
|
case SAVEt_GENERIC_SVREF: /* generic sv */
|
|
value = (SV*)SSPOPPTR;
|
|
ptr = SSPOPPTR;
|
|
if (ptr) {
|
|
sv = *(SV**)ptr;
|
|
*(SV**)ptr = value;
|
|
SvREFCNT_dec(sv);
|
|
}
|
|
SvREFCNT_dec(value);
|
|
break;
|
|
case SAVEt_SVREF: /* scalar reference */
|
|
value = (SV*)SSPOPPTR;
|
|
ptr = SSPOPPTR;
|
|
restore_sv:
|
|
sv = *(SV**)ptr;
|
|
DEBUG_S(PerlIO_printf(Perl_debug_log,
|
|
"restore svref: %p %p:%s -> %p:%s\n",
|
|
ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
|
|
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;
|
|
}
|
|
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;
|
|
PL_localizing = 2;
|
|
SvSETMAGIC(value);
|
|
PL_localizing = 0;
|
|
SvREFCNT_dec(value);
|
|
break;
|
|
case SAVEt_AV: /* array reference */
|
|
av = (AV*)SSPOPPTR;
|
|
gv = (GV*)SSPOPPTR;
|
|
if (GvAV(gv)) {
|
|
AV *goner = GvAV(gv);
|
|
SvMAGIC(av) = SvMAGIC(goner);
|
|
SvFLAGS((SV*)av) |= SvMAGICAL(goner);
|
|
SvMAGICAL_off(goner);
|
|
SvMAGIC(goner) = 0;
|
|
SvREFCNT_dec(goner);
|
|
}
|
|
GvAV(gv) = av;
|
|
if (SvMAGICAL(av)) {
|
|
PL_localizing = 2;
|
|
SvSETMAGIC((SV*)av);
|
|
PL_localizing = 0;
|
|
}
|
|
break;
|
|
case SAVEt_HV: /* hash reference */
|
|
hv = (HV*)SSPOPPTR;
|
|
gv = (GV*)SSPOPPTR;
|
|
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)) {
|
|
PL_localizing = 2;
|
|
SvSETMAGIC((SV*)hv);
|
|
PL_localizing = 0;
|
|
}
|
|
break;
|
|
case SAVEt_INT: /* int reference */
|
|
ptr = SSPOPPTR;
|
|
*(int*)ptr = (int)SSPOPINT;
|
|
break;
|
|
case SAVEt_LONG: /* long reference */
|
|
ptr = SSPOPPTR;
|
|
*(long*)ptr = (long)SSPOPLONG;
|
|
break;
|
|
case SAVEt_I32: /* I32 reference */
|
|
ptr = SSPOPPTR;
|
|
*(I32*)ptr = (I32)SSPOPINT;
|
|
break;
|
|
case SAVEt_I16: /* I16 reference */
|
|
ptr = SSPOPPTR;
|
|
*(I16*)ptr = (I16)SSPOPINT;
|
|
break;
|
|
case SAVEt_I8: /* I8 reference */
|
|
ptr = SSPOPPTR;
|
|
*(I8*)ptr = (I8)SSPOPINT;
|
|
break;
|
|
case SAVEt_IV: /* IV reference */
|
|
ptr = SSPOPPTR;
|
|
*(IV*)ptr = (IV)SSPOPIV;
|
|
break;
|
|
case SAVEt_SPTR: /* SV* reference */
|
|
ptr = SSPOPPTR;
|
|
*(SV**)ptr = (SV*)SSPOPPTR;
|
|
break;
|
|
case SAVEt_VPTR: /* random* reference */
|
|
case SAVEt_PPTR: /* char* reference */
|
|
ptr = SSPOPPTR;
|
|
*(char**)ptr = (char*)SSPOPPTR;
|
|
break;
|
|
case SAVEt_HPTR: /* HV* reference */
|
|
ptr = SSPOPPTR;
|
|
*(HV**)ptr = (HV*)SSPOPPTR;
|
|
break;
|
|
case SAVEt_APTR: /* AV* reference */
|
|
ptr = SSPOPPTR;
|
|
*(AV**)ptr = (AV*)SSPOPPTR;
|
|
break;
|
|
case SAVEt_NSTAB:
|
|
gv = (GV*)SSPOPPTR;
|
|
(void)sv_clear((SV*)gv);
|
|
break;
|
|
case SAVEt_GP: /* scalar reference */
|
|
ptr = SSPOPPTR;
|
|
gv = (GV*)SSPOPPTR;
|
|
if (SvPVX(gv) && SvLEN(gv) > 0) {
|
|
Safefree(SvPVX(gv));
|
|
}
|
|
SvPVX(gv) = (char *)SSPOPPTR;
|
|
SvCUR(gv) = (STRLEN)SSPOPIV;
|
|
SvLEN(gv) = (STRLEN)SSPOPIV;
|
|
gp_free(gv);
|
|
GvGP(gv) = (GP*)ptr;
|
|
if (GvCVu(gv))
|
|
PL_sub_generation++; /* putting a method back into circulation */
|
|
SvREFCNT_dec(gv);
|
|
break;
|
|
case SAVEt_FREESV:
|
|
ptr = SSPOPPTR;
|
|
SvREFCNT_dec((SV*)ptr);
|
|
break;
|
|
case SAVEt_FREEOP:
|
|
ptr = SSPOPPTR;
|
|
if (PL_comppad)
|
|
PL_curpad = AvARRAY(PL_comppad);
|
|
op_free((OP*)ptr);
|
|
break;
|
|
case SAVEt_FREEPV:
|
|
ptr = SSPOPPTR;
|
|
Safefree((char*)ptr);
|
|
break;
|
|
case SAVEt_CLEARSV:
|
|
ptr = (void*)&PL_curpad[SSPOPLONG];
|
|
sv = *(SV**)ptr;
|
|
/* Can clear pad variable in place? */
|
|
if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
|
|
if (SvTHINKFIRST(sv))
|
|
sv_force_normal(sv);
|
|
if (SvMAGICAL(sv))
|
|
mg_free(sv);
|
|
|
|
switch (SvTYPE(sv)) {
|
|
case SVt_NULL:
|
|
break;
|
|
case SVt_PVAV:
|
|
av_clear((AV*)sv);
|
|
break;
|
|
case SVt_PVHV:
|
|
hv_clear((HV*)sv);
|
|
break;
|
|
case SVt_PVCV:
|
|
Perl_croak(aTHX_ "panic: leave_scope pad code");
|
|
case SVt_RV:
|
|
case SVt_IV:
|
|
case SVt_NV:
|
|
(void)SvOK_off(sv);
|
|
break;
|
|
default:
|
|
(void)SvOK_off(sv);
|
|
(void)SvOOK_off(sv);
|
|
break;
|
|
}
|
|
}
|
|
else { /* Someone has a claim on this, so abandon it. */
|
|
U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP);
|
|
switch (SvTYPE(sv)) { /* Console ourselves with a new value */
|
|
case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
|
|
case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
|
|
default: *(SV**)ptr = NEWSV(0,0); break;
|
|
}
|
|
SvREFCNT_dec(sv); /* Cast current value to the winds. */
|
|
SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */
|
|
}
|
|
break;
|
|
case SAVEt_DELETE:
|
|
ptr = SSPOPPTR;
|
|
hv = (HV*)ptr;
|
|
ptr = SSPOPPTR;
|
|
(void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
|
|
SvREFCNT_dec(hv);
|
|
Safefree(ptr);
|
|
break;
|
|
case SAVEt_DESTRUCTOR:
|
|
ptr = SSPOPPTR;
|
|
(*SSPOPDPTR)(ptr);
|
|
break;
|
|
case SAVEt_DESTRUCTOR_X:
|
|
ptr = SSPOPPTR;
|
|
(*SSPOPDXPTR)(aTHXo_ ptr);
|
|
break;
|
|
case SAVEt_REGCONTEXT:
|
|
case SAVEt_ALLOC:
|
|
i = SSPOPINT;
|
|
PL_savestack_ix -= i; /* regexp must have croaked */
|
|
break;
|
|
case SAVEt_STACK_POS: /* Position on Perl stack */
|
|
i = SSPOPINT;
|
|
PL_stack_sp = PL_stack_base + i;
|
|
break;
|
|
case SAVEt_AELEM: /* array element */
|
|
value = (SV*)SSPOPPTR;
|
|
i = SSPOPINT;
|
|
av = (AV*)SSPOPPTR;
|
|
ptr = av_fetch(av,i,1);
|
|
if (ptr) {
|
|
sv = *(SV**)ptr;
|
|
if (sv && sv != &PL_sv_undef) {
|
|
if (SvTIED_mg((SV*)av, 'P'))
|
|
(void)SvREFCNT_inc(sv);
|
|
SvREFCNT_dec(av);
|
|
goto restore_sv;
|
|
}
|
|
}
|
|
SvREFCNT_dec(av);
|
|
SvREFCNT_dec(value);
|
|
break;
|
|
case SAVEt_HELEM: /* hash element */
|
|
value = (SV*)SSPOPPTR;
|
|
sv = (SV*)SSPOPPTR;
|
|
hv = (HV*)SSPOPPTR;
|
|
ptr = hv_fetch_ent(hv, sv, 1, 0);
|
|
if (ptr) {
|
|
SV *oval = HeVAL((HE*)ptr);
|
|
if (oval && oval != &PL_sv_undef) {
|
|
ptr = &HeVAL((HE*)ptr);
|
|
if (SvTIED_mg((SV*)hv, 'P'))
|
|
(void)SvREFCNT_inc(*(SV**)ptr);
|
|
SvREFCNT_dec(hv);
|
|
SvREFCNT_dec(sv);
|
|
goto restore_sv;
|
|
}
|
|
}
|
|
SvREFCNT_dec(hv);
|
|
SvREFCNT_dec(sv);
|
|
SvREFCNT_dec(value);
|
|
break;
|
|
case SAVEt_OP:
|
|
PL_op = (OP*)SSPOPPTR;
|
|
break;
|
|
case SAVEt_HINTS:
|
|
if (GvHV(PL_hintgv)) {
|
|
SvREFCNT_dec((SV*)GvHV(PL_hintgv));
|
|
GvHV(PL_hintgv) = NULL;
|
|
}
|
|
*(I32*)&PL_hints = (I32)SSPOPINT;
|
|
break;
|
|
case SAVEt_COMPPAD:
|
|
PL_comppad = (AV*)SSPOPPTR;
|
|
if (PL_comppad)
|
|
PL_curpad = AvARRAY(PL_comppad);
|
|
else
|
|
PL_curpad = Null(SV**);
|
|
break;
|
|
default:
|
|
Perl_croak(aTHX_ "panic: leave_scope inconsistency");
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
|
|
{
|
|
#ifdef DEBUGGING
|
|
dTHR;
|
|
PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
|
|
if (CxTYPE(cx) != CXt_SUBST) {
|
|
PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
|
|
PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
|
|
PTR2UV(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%"UVxf"\n",
|
|
PTR2UV(cx->blk_oldpm));
|
|
PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
|
|
}
|
|
switch (CxTYPE(cx)) {
|
|
case CXt_NULL:
|
|
case CXt_BLOCK:
|
|
break;
|
|
case CXt_FORMAT:
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_sub.cv));
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_sub.gv));
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_sub.dfoutgv));
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
|
|
(int)cx->blk_sub.hasargs);
|
|
break;
|
|
case CXt_SUB:
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_sub.cv));
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
|
|
(long)cx->blk_sub.olddepth);
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
|
|
(int)cx->blk_sub.hasargs);
|
|
PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
|
|
(int)cx->blk_sub.lval);
|
|
break;
|
|
case CXt_EVAL:
|
|
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
|
|
(long)cx->blk_eval.old_in_eval);
|
|
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
|
|
PL_op_name[cx->blk_eval.old_op_type],
|
|
PL_op_desc[cx->blk_eval.old_op_type]);
|
|
if (cx->blk_eval.old_namesv)
|
|
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
|
|
SvPVX(cx->blk_eval.old_namesv));
|
|
PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_eval.old_eval_root));
|
|
break;
|
|
|
|
case CXt_LOOP:
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
|
|
cx->blk_loop.label);
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
|
|
(long)cx->blk_loop.resetsp);
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.redo_op));
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.next_op));
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.last_op));
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
|
|
(long)cx->blk_loop.iterix);
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.iterary));
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
|
|
PTR2UV(CxITERVAR(cx)));
|
|
if (CxITERVAR(cx))
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.itersave));
|
|
PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
|
|
PTR2UV(cx->blk_loop.iterlval));
|
|
break;
|
|
|
|
case CXt_SUBST:
|
|
PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
|
|
(long)cx->sb_iters);
|
|
PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
|
|
(long)cx->sb_maxiters);
|
|
PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
|
|
(long)cx->sb_rflags);
|
|
PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
|
|
(long)cx->sb_once);
|
|
PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
|
|
cx->sb_orig);
|
|
PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_dstr));
|
|
PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_targ));
|
|
PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_s));
|
|
PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_m));
|
|
PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_strend));
|
|
PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
|
|
PTR2UV(cx->sb_rxres));
|
|
break;
|
|
}
|
|
#endif /* DEBUGGING */
|
|
}
|