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/* pp_ctl.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
* 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* Now far ahead the Road has gone,
* And I must follow, if I can,
* Pursuing it with eager feet,
* Until it joins some larger way
* Where many paths and errands meet.
* And whither then? I cannot say.
*
* [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"]
*/
/* This file contains control-oriented pp ("push/pop") functions that
* execute the opcodes that make up a perl program. A typical pp function
* expects to find its arguments on the stack, and usually pushes its
* results onto the stack, hence the 'pp' terminology. Each OP structure
* contains a pointer to the relevant pp_foo() function.
*
* Control-oriented means things like pp_enteriter() and pp_next(), which
* alter the flow of control of the program.
*/
#include "EXTERN.h"
#define PERL_IN_PP_CTL_C
#include "perl.h"
#ifndef WORD_ALIGN
#define WORD_ALIGN sizeof(U32)
#endif
#define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
#define dopoptosub(plop) dopoptosub_at(cxstack, (plop))
PP(pp_wantarray)
{
dVAR;
dSP;
I32 cxix;
EXTEND(SP, 1);
cxix = dopoptosub(cxstack_ix);
if (cxix < 0)
RETPUSHUNDEF;
switch (cxstack[cxix].blk_gimme) {
case G_ARRAY:
RETPUSHYES;
case G_SCALAR:
RETPUSHNO;
default:
RETPUSHUNDEF;
}
}
PP(pp_regcreset)
{
dVAR;
/* XXXX Should store the old value to allow for tie/overload - and
restore in regcomp, where marked with XXXX. */
PL_reginterp_cnt = 0;
TAINT_NOT;
return NORMAL;
}
PP(pp_regcomp)
{
dVAR;
dSP;
register PMOP *pm = (PMOP*)cLOGOP->op_other;
SV *tmpstr;
REGEXP *re = NULL;
/* prevent recompiling under /o and ithreads. */
#if defined(USE_ITHREADS)
if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) {
if (PL_op->op_flags & OPf_STACKED) {
dMARK;
SP = MARK;
}
else
(void)POPs;
RETURN;
}
#endif
if (PL_op->op_flags & OPf_STACKED) {
/* multiple args; concatentate them */
dMARK; dORIGMARK;
tmpstr = PAD_SV(ARGTARG);
sv_setpvs(tmpstr, "");
while (++MARK <= SP) {
if (PL_amagic_generation) {
SV *sv;
if ((SvAMAGIC(tmpstr) || SvAMAGIC(*MARK)) &&
(sv = amagic_call(tmpstr, *MARK, concat_amg, AMGf_assign)))
{
sv_setsv(tmpstr, sv);
continue;
}
}
sv_catsv(tmpstr, *MARK);
}
SvSETMAGIC(tmpstr);
SP = ORIGMARK;
}
else
tmpstr = POPs;
if (SvROK(tmpstr)) {
SV * const sv = SvRV(tmpstr);
if (SvTYPE(sv) == SVt_REGEXP)
re = (REGEXP*) sv;
}
if (re) {
re = reg_temp_copy(re);
ReREFCNT_dec(PM_GETRE(pm));
PM_SETRE(pm, re);
}
else {
STRLEN len;
const char *t = SvOK(tmpstr) ? SvPV_const(tmpstr, len) : "";
re = PM_GETRE(pm);
assert (re != (REGEXP*) &PL_sv_undef);
/* Check against the last compiled regexp. */
if (!re || !RX_PRECOMP(re) || RX_PRELEN(re) != len ||
memNE(RX_PRECOMP(re), t, len))
{
const regexp_engine *eng = re ? RX_ENGINE(re) : NULL;
U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME;
if (re) {
ReREFCNT_dec(re);
#ifdef USE_ITHREADS
PM_SETRE(pm, (REGEXP*) &PL_sv_undef);
#else
PM_SETRE(pm, NULL); /* crucial if regcomp aborts */
#endif
} else if (PL_curcop->cop_hints_hash) {
SV *ptr = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, 0,
"regcomp", 7, 0, 0);
if (ptr && SvIOK(ptr) && SvIV(ptr))
eng = INT2PTR(regexp_engine*,SvIV(ptr));
}
if (PL_op->op_flags & OPf_SPECIAL)
PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
if (DO_UTF8(tmpstr)) {
assert (SvUTF8(tmpstr));
} else if (SvUTF8(tmpstr)) {
/* Not doing UTF-8, despite what the SV says. Is this only if
we're trapped in use 'bytes'? */
/* Make a copy of the octet sequence, but without the flag on,
as the compiler now honours the SvUTF8 flag on tmpstr. */
STRLEN len;
const char *const p = SvPV(tmpstr, len);
tmpstr = newSVpvn_flags(p, len, SVs_TEMP);
}
if (eng)
PM_SETRE(pm, CALLREGCOMP_ENG(eng, tmpstr, pm_flags));
else
PM_SETRE(pm, CALLREGCOMP(tmpstr, pm_flags));
PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
inside tie/overload accessors. */
}
}
re = PM_GETRE(pm);
#ifndef INCOMPLETE_TAINTS
if (PL_tainting) {
if (PL_tainted)
RX_EXTFLAGS(re) |= RXf_TAINTED;
else
RX_EXTFLAGS(re) &= ~RXf_TAINTED;
}
#endif
if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm)
pm = PL_curpm;
#if !defined(USE_ITHREADS)
/* can't change the optree at runtime either */
/* PMf_KEEP is handled differently under threads to avoid these problems */
if (pm->op_pmflags & PMf_KEEP) {
pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
cLOGOP->op_first->op_next = PL_op->op_next;
}
#endif
RETURN;
}
PP(pp_substcont)
{
dVAR;
dSP;
register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
register PMOP * const pm = (PMOP*) cLOGOP->op_other;
register SV * const dstr = cx->sb_dstr;
register char *s = cx->sb_s;
register char *m = cx->sb_m;
char *orig = cx->sb_orig;
register REGEXP * const rx = cx->sb_rx;
SV *nsv = NULL;
REGEXP *old = PM_GETRE(pm);
if(old != rx) {
if(old)
ReREFCNT_dec(old);
PM_SETRE(pm,ReREFCNT_inc(rx));
}
rxres_restore(&cx->sb_rxres, rx);
RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ));
if (cx->sb_iters++) {
const I32 saviters = cx->sb_iters;
if (cx->sb_iters > cx->sb_maxiters)
DIE(aTHX_ "Substitution loop");
if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
cx->sb_rxtainted |= 2;
sv_catsv(dstr, POPs);
/* Are we done */
if (CxONCE(cx) || !CALLREGEXEC(rx, s, cx->sb_strend, orig,
s == m, cx->sb_targ, NULL,
((cx->sb_rflags & REXEC_COPY_STR)
? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
: (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
{
SV * const targ = cx->sb_targ;
assert(cx->sb_strend >= s);
if(cx->sb_strend > s) {
if (DO_UTF8(dstr) && !SvUTF8(targ))
sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv);
else
sv_catpvn(dstr, s, cx->sb_strend - s);
}
cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
#ifdef PERL_OLD_COPY_ON_WRITE
if (SvIsCOW(targ)) {
sv_force_normal_flags(targ, SV_COW_DROP_PV);
} else
#endif
{
SvPV_free(targ);
}
SvPV_set(targ, SvPVX(dstr));
SvCUR_set(targ, SvCUR(dstr));
SvLEN_set(targ, SvLEN(dstr));
if (DO_UTF8(dstr))
SvUTF8_on(targ);
SvPV_set(dstr, NULL);
TAINT_IF(cx->sb_rxtainted & 1);
mPUSHi(saviters - 1);
(void)SvPOK_only_UTF8(targ);
TAINT_IF(cx->sb_rxtainted);
SvSETMAGIC(targ);
SvTAINT(targ);
LEAVE_SCOPE(cx->sb_oldsave);
POPSUBST(cx);
RETURNOP(pm->op_next);
}
cx->sb_iters = saviters;
}
if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) {
m = s;
s = orig;
cx->sb_orig = orig = RX_SUBBEG(rx);
s = orig + (m - s);
cx->sb_strend = s + (cx->sb_strend - m);
}
cx->sb_m = m = RX_OFFS(rx)[0].start + orig;
if (m > s) {
if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ))
sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv);
else
sv_catpvn(dstr, s, m-s);
}
cx->sb_s = RX_OFFS(rx)[0].end + orig;
{ /* Update the pos() information. */
SV * const sv = cx->sb_targ;
MAGIC *mg;
SvUPGRADE(sv, SVt_PVMG);
if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
#ifdef PERL_OLD_COPY_ON_WRITE
if (SvIsCOW(sv))
sv_force_normal_flags(sv, 0);
#endif
mg = sv_magicext(sv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob,
NULL, 0);
}
mg->mg_len = m - orig;
}
if (old != rx)
(void)ReREFCNT_inc(rx);
cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
rxres_save(&cx->sb_rxres, rx);
RETURNOP(pm->op_pmstashstartu.op_pmreplstart);
}
void
Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
{
UV *p = (UV*)*rsp;
U32 i;
PERL_ARGS_ASSERT_RXRES_SAVE;
PERL_UNUSED_CONTEXT;
if (!p || p[1] < RX_NPARENS(rx)) {
#ifdef PERL_OLD_COPY_ON_WRITE
i = 7 + RX_NPARENS(rx) * 2;
#else
i = 6 + RX_NPARENS(rx) * 2;
#endif
if (!p)
Newx(p, i, UV);
else
Renew(p, i, UV);
*rsp = (void*)p;
}
*p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL);
RX_MATCH_COPIED_off(rx);
#ifdef PERL_OLD_COPY_ON_WRITE
*p++ = PTR2UV(RX_SAVED_COPY(rx));
RX_SAVED_COPY(rx) = NULL;
#endif
*p++ = RX_NPARENS(rx);
*p++ = PTR2UV(RX_SUBBEG(rx));
*p++ = (UV)RX_SUBLEN(rx);
for (i = 0; i <= RX_NPARENS(rx); ++i) {
*p++ = (UV)RX_OFFS(rx)[i].start;
*p++ = (UV)RX_OFFS(rx)[i].end;
}
}
static void
S_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
{
UV *p = (UV*)*rsp;
U32 i;
PERL_ARGS_ASSERT_RXRES_RESTORE;
PERL_UNUSED_CONTEXT;
RX_MATCH_COPY_FREE(rx);
RX_MATCH_COPIED_set(rx, *p);
*p++ = 0;
#ifdef PERL_OLD_COPY_ON_WRITE
if (RX_SAVED_COPY(rx))
SvREFCNT_dec (RX_SAVED_COPY(rx));
RX_SAVED_COPY(rx) = INT2PTR(SV*,*p);
*p++ = 0;
#endif
RX_NPARENS(rx) = *p++;
RX_SUBBEG(rx) = INT2PTR(char*,*p++);
RX_SUBLEN(rx) = (I32)(*p++);
for (i = 0; i <= RX_NPARENS(rx); ++i) {
RX_OFFS(rx)[i].start = (I32)(*p++);
RX_OFFS(rx)[i].end = (I32)(*p++);
}
}
static void
S_rxres_free(pTHX_ void **rsp)
{
UV * const p = (UV*)*rsp;
PERL_ARGS_ASSERT_RXRES_FREE;
PERL_UNUSED_CONTEXT;
if (p) {
#ifdef PERL_POISON
void *tmp = INT2PTR(char*,*p);
Safefree(tmp);
if (*p)
PoisonFree(*p, 1, sizeof(*p));
#else
Safefree(INT2PTR(char*,*p));
#endif
#ifdef PERL_OLD_COPY_ON_WRITE
if (p[1]) {
SvREFCNT_dec (INT2PTR(SV*,p[1]));
}
#endif
Safefree(p);
*rsp = NULL;
}
}
PP(pp_formline)
{
dVAR; dSP; dMARK; dORIGMARK;
register SV * const tmpForm = *++MARK;
register U32 *fpc;
register char *t;
const char *f;
register I32 arg;
register SV *sv = NULL;
const char *item = NULL;
I32 itemsize = 0;
I32 fieldsize = 0;
I32 lines = 0;
bool chopspace = (strchr(PL_chopset, ' ') != NULL);
const char *chophere = NULL;
char *linemark = NULL;
NV value;
bool gotsome = FALSE;
STRLEN len;
const STRLEN fudge = SvPOK(tmpForm)
? (SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1) : 0;
bool item_is_utf8 = FALSE;
bool targ_is_utf8 = FALSE;
SV * nsv = NULL;
OP * parseres = NULL;
const char *fmt;
if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
if (SvREADONLY(tmpForm)) {
SvREADONLY_off(tmpForm);
parseres = doparseform(tmpForm);
SvREADONLY_on(tmpForm);
}
else
parseres = doparseform(tmpForm);
if (parseres)
return parseres;
}
SvPV_force(PL_formtarget, len);
if (DO_UTF8(PL_formtarget))
targ_is_utf8 = TRUE;
t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
t += len;
f = SvPV_const(tmpForm, len);
/* need to jump to the next word */
fpc = (U32*)(f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN);
for (;;) {
DEBUG_f( {
const char *name = "???";
arg = -1;
switch (*fpc) {
case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
case FF_CHECKNL: name = "CHECKNL"; break;
case FF_CHECKCHOP: name = "CHECKCHOP"; break;
case FF_SPACE: name = "SPACE"; break;
case FF_HALFSPACE: name = "HALFSPACE"; break;
case FF_ITEM: name = "ITEM"; break;
case FF_CHOP: name = "CHOP"; break;
case FF_LINEGLOB: name = "LINEGLOB"; break;
case FF_NEWLINE: name = "NEWLINE"; break;
case FF_MORE: name = "MORE"; break;
case FF_LINEMARK: name = "LINEMARK"; break;
case FF_END: name = "END"; break;
case FF_0DECIMAL: name = "0DECIMAL"; break;
case FF_LINESNGL: name = "LINESNGL"; break;
}
if (arg >= 0)
PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
else
PerlIO_printf(Perl_debug_log, "%-16s\n", name);
} );
switch (*fpc++) {
case FF_LINEMARK:
linemark = t;
lines++;
gotsome = FALSE;
break;
case FF_LITERAL:
arg = *fpc++;
if (targ_is_utf8 && !SvUTF8(tmpForm)) {
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
*t = '\0';
sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv);
t = SvEND(PL_formtarget);
f += arg;
break;
}
if (!targ_is_utf8 && DO_UTF8(tmpForm)) {
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
*t = '\0';
sv_utf8_upgrade_flags_grow(PL_formtarget, SV_GMAGIC, fudge + 1);
t = SvEND(PL_formtarget);
targ_is_utf8 = TRUE;
}
while (arg--)
*t++ = *f++;
break;
case FF_SKIP:
f += *fpc++;
break;
case FF_FETCH:
arg = *fpc++;
f += arg;
fieldsize = arg;
if (MARK < SP)
sv = *++MARK;
else {
sv = &PL_sv_no;
if (ckWARN(WARN_SYNTAX))
Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
}
break;
case FF_CHECKNL:
{
const char *send;
const char *s = item = SvPV_const(sv, len);
itemsize = len;
if (DO_UTF8(sv)) {
itemsize = sv_len_utf8(sv);
if (itemsize != (I32)len) {
I32 itembytes;
if (itemsize > fieldsize) {
itemsize = fieldsize;
itembytes = itemsize;
sv_pos_u2b(sv, &itembytes, 0);
}
else
itembytes = len;
send = chophere = s + itembytes;
while (s < send) {
if (*s & ~31)
gotsome = TRUE;
else if (*s == '\n')
break;
s++;
}
item_is_utf8 = TRUE;
itemsize = s - item;
sv_pos_b2u(sv, &itemsize);
break;
}
}
item_is_utf8 = FALSE;
if (itemsize > fieldsize)
itemsize = fieldsize;
send = chophere = s + itemsize;
while (s < send) {
if (*s & ~31)
gotsome = TRUE;
else if (*s == '\n')
break;
s++;
}
itemsize = s - item;
break;
}
case FF_CHECKCHOP:
{
const char *s = item = SvPV_const(sv, len);
itemsize = len;
if (DO_UTF8(sv)) {
itemsize = sv_len_utf8(sv);
if (itemsize != (I32)len) {
I32 itembytes;
if (itemsize <= fieldsize) {
const char *send = chophere = s + itemsize;
while (s < send) {
if (*s == '\r') {
itemsize = s - item;
chophere = s;
break;
}
if (*s++ & ~31)
gotsome = TRUE;
}
}
else {
const char *send;
itemsize = fieldsize;
itembytes = itemsize;
sv_pos_u2b(sv, &itembytes, 0);
send = chophere = s + itembytes;
while (s < send || (s == send && isSPACE(*s))) {
if (isSPACE(*s)) {
if (chopspace)
chophere = s;
if (*s == '\r')
break;
}
else {
if (*s & ~31)
gotsome = TRUE;
if (strchr(PL_chopset, *s))
chophere = s + 1;
}
s++;
}
itemsize = chophere - item;
sv_pos_b2u(sv, &itemsize);
}
item_is_utf8 = TRUE;
break;
}
}
item_is_utf8 = FALSE;
if (itemsize <= fieldsize) {
const char *const send = chophere = s + itemsize;
while (s < send) {
if (*s == '\r') {
itemsize = s - item;
chophere = s;
break;
}
if (*s++ & ~31)
gotsome = TRUE;
}
}
else {
const char *send;
itemsize = fieldsize;
send = chophere = s + itemsize;
while (s < send || (s == send && isSPACE(*s))) {
if (isSPACE(*s)) {
if (chopspace)
chophere = s;
if (*s == '\r')
break;
}
else {
if (*s & ~31)
gotsome = TRUE;
if (strchr(PL_chopset, *s))
chophere = s + 1;
}
s++;
}
itemsize = chophere - item;
}
break;
}
case FF_SPACE:
arg = fieldsize - itemsize;
if (arg) {
fieldsize -= arg;
while (arg-- > 0)
*t++ = ' ';
}
break;
case FF_HALFSPACE:
arg = fieldsize - itemsize;
if (arg) {
arg /= 2;
fieldsize -= arg;
while (arg-- > 0)
*t++ = ' ';
}
break;
case FF_ITEM:
{
const char *s = item;
arg = itemsize;
if (item_is_utf8) {
if (!targ_is_utf8) {
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
*t = '\0';
sv_utf8_upgrade_flags_grow(PL_formtarget, SV_GMAGIC,
fudge + 1);
t = SvEND(PL_formtarget);
targ_is_utf8 = TRUE;
}
while (arg--) {
if (UTF8_IS_CONTINUED(*s)) {
STRLEN skip = UTF8SKIP(s);
switch (skip) {
default:
Move(s,t,skip,char);
s += skip;
t += skip;
break;
case 7: *t++ = *s++;
case 6: *t++ = *s++;
case 5: *t++ = *s++;
case 4: *t++ = *s++;
case 3: *t++ = *s++;
case 2: *t++ = *s++;
case 1: *t++ = *s++;
}
}
else {
if ( !((*t++ = *s++) & ~31) )
t[-1] = ' ';
}
}
break;
}
if (targ_is_utf8 && !item_is_utf8) {
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
*t = '\0';
sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv);
for (; t < SvEND(PL_formtarget); t++) {
#ifdef EBCDIC
const int ch = *t;
if (iscntrl(ch))
#else
if (!(*t & ~31))
#endif
*t = ' ';
}
break;
}
while (arg--) {
#ifdef EBCDIC
const int ch = *t++ = *s++;
if (iscntrl(ch))
#else
if ( !((*t++ = *s++) & ~31) )
#endif
t[-1] = ' ';
}
break;
}
case FF_CHOP:
{
const char *s = chophere;
if (chopspace) {
while (isSPACE(*s))
s++;
}
sv_chop(sv,s);
SvSETMAGIC(sv);
break;
}
case FF_LINESNGL:
chopspace = 0;
case FF_LINEGLOB:
{
const bool oneline = fpc[-1] == FF_LINESNGL;
const char *s = item = SvPV_const(sv, len);
item_is_utf8 = DO_UTF8(sv);
itemsize = len;
if (itemsize) {
STRLEN to_copy = itemsize;
const char *const send = s + len;
const U8 *source = (const U8 *) s;
U8 *tmp = NULL;
gotsome = TRUE;
chophere = s + itemsize;
while (s < send) {
if (*s++ == '\n') {
if (oneline) {
to_copy = s - SvPVX_const(sv) - 1;
chophere = s;
break;
} else {
if (s == send) {
itemsize--;
to_copy--;
} else
lines++;
}
}
}
if (targ_is_utf8 && !item_is_utf8) {
source = tmp = bytes_to_utf8(source, &to_copy);
SvCUR_set(PL_formtarget,
t - SvPVX_const(PL_formtarget));
} else {
if (item_is_utf8 && !targ_is_utf8) {
/* Upgrade targ to UTF8, and then we reduce it to
a problem we have a simple solution for. */
SvCUR_set(PL_formtarget,
t - SvPVX_const(PL_formtarget));
targ_is_utf8 = TRUE;
/* Don't need get magic. */
sv_utf8_upgrade_nomg(PL_formtarget);
} else {
SvCUR_set(PL_formtarget,
t - SvPVX_const(PL_formtarget));
}
/* Easy. They agree. */
assert (item_is_utf8 == targ_is_utf8);
}
SvGROW(PL_formtarget,
SvCUR(PL_formtarget) + to_copy + fudge + 1);
t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
Copy(source, t, to_copy, char);
t += to_copy;
SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) + to_copy);
if (item_is_utf8) {
if (SvGMAGICAL(sv)) {
/* Mustn't call sv_pos_b2u() as it does a second
mg_get(). Is this a bug? Do we need a _flags()
variant? */
itemsize = utf8_length(source, source + itemsize);
} else {
sv_pos_b2u(sv, &itemsize);
}
assert(!tmp);
} else if (tmp) {
Safefree(tmp);
}
}
break;
}
case FF_0DECIMAL:
arg = *fpc++;
#if defined(USE_LONG_DOUBLE)
fmt = (const char *)
((arg & 256) ?
"%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl);
#else
fmt = (const char *)
((arg & 256) ?
"%#0*.*f" : "%0*.*f");
#endif
goto ff_dec;
case FF_DECIMAL:
arg = *fpc++;
#if defined(USE_LONG_DOUBLE)
fmt = (const char *)
((arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl);
#else
fmt = (const char *)
((arg & 256) ? "%#*.*f" : "%*.*f");
#endif
ff_dec:
/* If the field is marked with ^ and the value is undefined,
blank it out. */
if ((arg & 512) && !SvOK(sv)) {
arg = fieldsize;
while (arg--)
*t++ = ' ';
break;
}
gotsome = TRUE;
value = SvNV(sv);
/* overflow evidence */
if (num_overflow(value, fieldsize, arg)) {
arg = fieldsize;
while (arg--)
*t++ = '#';
break;
}
/* Formats aren't yet marked for locales, so assume "yes". */
{
STORE_NUMERIC_STANDARD_SET_LOCAL();
my_snprintf(t, SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)), fmt, (int) fieldsize, (int) arg & 255, value);
RESTORE_NUMERIC_STANDARD();
}
t += fieldsize;
break;
case FF_NEWLINE:
f++;
while (t-- > linemark && *t == ' ') ;
t++;
*t++ = '\n';
break;
case FF_BLANK:
arg = *fpc++;
if (gotsome) {
if (arg) { /* repeat until fields exhausted? */
*t = '\0';
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
lines += FmLINES(PL_formtarget);
if (lines == 200) {
arg = t - linemark;
if (strnEQ(linemark, linemark - arg, arg))
DIE(aTHX_ "Runaway format");
}
if (targ_is_utf8)
SvUTF8_on(PL_formtarget);
FmLINES(PL_formtarget) = lines;
SP = ORIGMARK;
RETURNOP(cLISTOP->op_first);
}
}
else {
t = linemark;
lines--;
}
break;
case FF_MORE:
{
const char *s = chophere;
const char *send = item + len;
if (chopspace) {
while (isSPACE(*s) && (s < send))
s++;
}
if (s < send) {
char *s1;
arg = fieldsize - itemsize;
if (arg) {
fieldsize -= arg;
while (arg-- > 0)
*t++ = ' ';
}
s1 = t - 3;
if (strnEQ(s1," ",3)) {
while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1]))
s1--;
}
*s1++ = '.';
*s1++ = '.';
*s1++ = '.';
}
break;
}
case FF_END:
*t = '\0';
SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
if (targ_is_utf8)
SvUTF8_on(PL_formtarget);
FmLINES(PL_formtarget) += lines;
SP = ORIGMARK;
RETPUSHYES;
}
}
}
PP(pp_grepstart)
{
dVAR; dSP;
SV *src;
if (PL_stack_base + *PL_markstack_ptr == SP) {
(void)POPMARK;
if (GIMME_V == G_SCALAR)
mXPUSHi(0);
RETURNOP(PL_op->op_next->op_next);
}
PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
pp_pushmark(); /* push dst */
pp_pushmark(); /* push src */
ENTER; /* enter outer scope */
SAVETMPS;
if (PL_op->op_private & OPpGREP_LEX)
SAVESPTR(PAD_SVl(PL_op->op_targ));
else
SAVE_DEFSV;
ENTER; /* enter inner scope */
SAVEVPTR(PL_curpm);
src = PL_stack_base[*PL_markstack_ptr];
SvTEMP_off(src);
if (PL_op->op_private & OPpGREP_LEX)
PAD_SVl(PL_op->op_targ) = src;
else
DEFSV_set(src);
PUTBACK;
if (PL_op->op_type == OP_MAPSTART)
pp_pushmark(); /* push top */
return ((LOGOP*)PL_op->op_next)->op_other;
}
PP(pp_mapwhile)
{
dVAR; dSP;
const I32 gimme = GIMME_V;
I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
I32 count;
I32 shift;
SV** src;
SV** dst;
/* first, move source pointer to the next item in the source list */
++PL_markstack_ptr[-1];
/* if there are new items, push them into the destination list */
if (items && gimme != G_VOID) {
/* might need to make room back there first */
if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
/* XXX this implementation is very pessimal because the stack
* is repeatedly extended for every set of items. Is possible
* to do this without any stack extension or copying at all
* by maintaining a separate list over which the map iterates
* (like foreach does). --gsar */
/* everything in the stack after the destination list moves
* towards the end the stack by the amount of room needed */
shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
/* items to shift up (accounting for the moved source pointer) */
count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
/* This optimization is by Ben Tilly and it does
* things differently from what Sarathy (gsar)
* is describing. The downside of this optimization is
* that leaves "holes" (uninitialized and hopefully unused areas)
* to the Perl stack, but on the other hand this
* shouldn't be a problem. If Sarathy's idea gets
* implemented, this optimization should become
* irrelevant. --jhi */
if (shift < count)
shift = count; /* Avoid shifting too often --Ben Tilly */
EXTEND(SP,shift);
src = SP;
dst = (SP += shift);
PL_markstack_ptr[-1] += shift;
*PL_markstack_ptr += shift;
while (count--)
*dst-- = *src--;
}
/* copy the new items down to the destination list */
dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
if (gimme == G_ARRAY) {
while (items-- > 0)
*dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
}
else {
/* scalar context: we don't care about which values map returns
* (we use undef here). And so we certainly don't want to do mortal
* copies of meaningless values. */
while (items-- > 0) {
(void)POPs;
*dst-- = &PL_sv_undef;
}
}
}
LEAVE; /* exit inner scope */
/* All done yet? */
if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
(void)POPMARK; /* pop top */
LEAVE; /* exit outer scope */
(void)POPMARK; /* pop src */
items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
(void)POPMARK; /* pop dst */
SP = PL_stack_base + POPMARK; /* pop original mark */
if (gimme == G_SCALAR) {
if (PL_op->op_private & OPpGREP_LEX) {
SV* sv = sv_newmortal();
sv_setiv(sv, items);
PUSHs(sv);
}
else {
dTARGET;
XPUSHi(items);
}
}
else if (gimme == G_ARRAY)
SP += items;
RETURN;
}
else {
SV *src;
ENTER; /* enter inner scope */
SAVEVPTR(PL_curpm);
/* set $_ to the new source item */
src = PL_stack_base[PL_markstack_ptr[-1]];
SvTEMP_off(src);
if (PL_op->op_private & OPpGREP_LEX)
PAD_SVl(PL_op->op_targ) = src;
else
DEFSV_set(src);
RETURNOP(cLOGOP->op_other);
}
}
/* Range stuff. */
PP(pp_range)
{
dVAR;
if (GIMME == G_ARRAY)
return NORMAL;
if (SvTRUEx(PAD_SV(PL_op->op_targ)))
return cLOGOP->op_other;
else
return NORMAL;
}
PP(pp_flip)
{
dVAR;
dSP;
if (GIMME == G_ARRAY) {
RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
}
else {
dTOPss;
SV * const targ = PAD_SV(PL_op->op_targ);
int flip = 0;
if (PL_op->op_private & OPpFLIP_LINENUM) {
if (GvIO(PL_last_in_gv)) {
flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
}
else {
GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV);
if (gv && GvSV(gv))
flip = SvIV(sv) == SvIV(GvSV(gv));
}
} else {
flip = SvTRUE(sv);
}
if (flip) {
sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
if (PL_op->op_flags & OPf_SPECIAL) {
sv_setiv(targ, 1);
SETs(targ);
RETURN;
}
else {
sv_setiv(targ, 0);
SP--;
RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
}
}
sv_setpvs(TARG, "");
SETs(targ);
RETURN;
}
}
/* This code tries to decide if "$left .. $right" should use the
magical string increment, or if the range is numeric (we make
an exception for .."0" [#18165]). AMS 20021031. */
#define RANGE_IS_NUMERIC(left,right) ( \
SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \
SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \
(((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \
looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \
&& (!SvOK(right) || looks_like_number(right))))
PP(pp_flop)
{
dVAR; dSP;
if (GIMME == G_ARRAY) {
dPOPPOPssrl;
SvGETMAGIC(left);
SvGETMAGIC(right);
if (RANGE_IS_NUMERIC(left,right)) {
register IV i, j;
IV max;
if ((SvOK(left) && SvNV(left) < IV_MIN) ||
(SvOK(right) && SvNV(right) > IV_MAX))
DIE(aTHX_ "Range iterator outside integer range");
i = SvIV(left);
max = SvIV(right);
if (max >= i) {
j = max - i + 1;
EXTEND_MORTAL(j);
EXTEND(SP, j);
}
else
j = 0;
while (j--) {
SV * const sv = sv_2mortal(newSViv(i++));
PUSHs(sv);
}
}
else {
SV * const final = sv_mortalcopy(right);
STRLEN len;
const char * const tmps = SvPV_const(final, len);
SV *sv = sv_mortalcopy(left);
SvPV_force_nolen(sv);
while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
XPUSHs(sv);
if (strEQ(SvPVX_const(sv),tmps))
break;
sv = sv_2mortal(newSVsv(sv));
sv_inc(sv);
}
}
}
else {
dTOPss;
SV * const targ = PAD_SV(cUNOP->op_first->op_targ);
int flop = 0;
sv_inc(targ);
if (PL_op->op_private & OPpFLIP_LINENUM) {
if (GvIO(PL_last_in_gv)) {
flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
}
else {
GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV);
if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
}
}
else {
flop = SvTRUE(sv);
}
if (flop) {
sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
sv_catpvs(targ, "E0");
}
SETs(targ);
}
RETURN;
}
/* Control. */
static const char * const context_name[] = {
"pseudo-block",
NULL, /* CXt_WHEN never actually needs "block" */
NULL, /* CXt_BLOCK never actually needs "block" */
NULL, /* CXt_GIVEN never actually needs "block" */
NULL, /* CXt_LOOP_FOR never actually needs "loop" */
NULL, /* CXt_LOOP_PLAIN never actually needs "loop" */
NULL, /* CXt_LOOP_LAZYSV never actually needs "loop" */
NULL, /* CXt_LOOP_LAZYIV never actually needs "loop" */
"subroutine",
"format",
"eval",
"substitution",
};
STATIC I32
S_dopoptolabel(pTHX_ const char *label)
{
dVAR;
register I32 i;
PERL_ARGS_ASSERT_DOPOPTOLABEL;
for (i = cxstack_ix; i >= 0; i--) {
register const PERL_CONTEXT * const cx = &cxstack[i];
switch (CxTYPE(cx)) {
case CXt_SUBST:
case CXt_SUB:
case CXt_FORMAT:
case CXt_EVAL:
case CXt_NULL:
if (ckWARN(WARN_EXITING))
Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
context_name[CxTYPE(cx)], OP_NAME(PL_op));
if (CxTYPE(cx) == CXt_NULL)
return -1;
break;
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
if ( !CxLABEL(cx) || strNE(label, CxLABEL(cx)) ) {
DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
(long)i, CxLABEL(cx)));
continue;
}
DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
return i;
}
}
return i;
}
I32
Perl_dowantarray(pTHX)
{
dVAR;
const I32 gimme = block_gimme();
return (gimme == G_VOID) ? G_SCALAR : gimme;
}
I32
Perl_block_gimme(pTHX)
{
dVAR;
const I32 cxix = dopoptosub(cxstack_ix);
if (cxix < 0)
return G_VOID;
switch (cxstack[cxix].blk_gimme) {
case G_VOID:
return G_VOID;
case G_SCALAR:
return G_SCALAR;
case G_ARRAY:
return G_ARRAY;
default:
Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
/* NOTREACHED */
return 0;
}
}
I32
Perl_is_lvalue_sub(pTHX)
{
dVAR;
const I32 cxix = dopoptosub(cxstack_ix);
assert(cxix >= 0); /* We should only be called from inside subs */
if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv))
return CxLVAL(cxstack + cxix);
else
return 0;
}
STATIC I32
S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock)
{
dVAR;
I32 i;
PERL_ARGS_ASSERT_DOPOPTOSUB_AT;
for (i = startingblock; i >= 0; i--) {
register const PERL_CONTEXT * const cx = &cxstk[i];
switch (CxTYPE(cx)) {
default:
continue;
case CXt_EVAL:
case CXt_SUB:
case CXt_FORMAT:
DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
return i;
}
}
return i;
}
STATIC I32
S_dopoptoeval(pTHX_ I32 startingblock)
{
dVAR;
I32 i;
for (i = startingblock; i >= 0; i--) {
register const PERL_CONTEXT *cx = &cxstack[i];
switch (CxTYPE(cx)) {
default:
continue;
case CXt_EVAL:
DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
return i;
}
}
return i;
}
STATIC I32
S_dopoptoloop(pTHX_ I32 startingblock)
{
dVAR;
I32 i;
for (i = startingblock; i >= 0; i--) {
register const PERL_CONTEXT * const cx = &cxstack[i];
switch (CxTYPE(cx)) {
case CXt_SUBST:
case CXt_SUB:
case CXt_FORMAT:
case CXt_EVAL:
case CXt_NULL:
if (ckWARN(WARN_EXITING))
Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
context_name[CxTYPE(cx)], OP_NAME(PL_op));
if ((CxTYPE(cx)) == CXt_NULL)
return -1;
break;
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
return i;
}
}
return i;
}
STATIC I32
S_dopoptogiven(pTHX_ I32 startingblock)
{
dVAR;
I32 i;
for (i = startingblock; i >= 0; i--) {
register const PERL_CONTEXT *cx = &cxstack[i];
switch (CxTYPE(cx)) {
default:
continue;
case CXt_GIVEN:
DEBUG_l( Perl_deb(aTHX_ "(Found given #%ld)\n", (long)i));
return i;
case CXt_LOOP_PLAIN:
assert(!CxFOREACHDEF(cx));
break;
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
if (CxFOREACHDEF(cx)) {
DEBUG_l( Perl_deb(aTHX_ "(Found foreach #%ld)\n", (long)i));
return i;
}
}
}
return i;
}
STATIC I32
S_dopoptowhen(pTHX_ I32 startingblock)
{
dVAR;
I32 i;
for (i = startingblock; i >= 0; i--) {
register const PERL_CONTEXT *cx = &cxstack[i];
switch (CxTYPE(cx)) {
default:
continue;
case CXt_WHEN:
DEBUG_l( Perl_deb(aTHX_ "(Found when #%ld)\n", (long)i));
return i;
}
}
return i;
}
void
Perl_dounwind(pTHX_ I32 cxix)
{
dVAR;
I32 optype;
while (cxstack_ix > cxix) {
SV *sv;
register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
(long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
/* Note: we don't need to restore the base context info till the end. */
switch (CxTYPE(cx)) {
case CXt_SUBST:
POPSUBST(cx);
continue; /* not break */
case CXt_SUB:
POPSUB(cx,sv);
LEAVESUB(sv);
break;
case CXt_EVAL:
POPEVAL(cx);
break;
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
POPLOOP(cx);
break;
case CXt_NULL:
break;
case CXt_FORMAT:
POPFORMAT(cx);
break;
}
cxstack_ix--;
}
PERL_UNUSED_VAR(optype);
}
void
Perl_qerror(pTHX_ SV *err)
{
dVAR;
PERL_ARGS_ASSERT_QERROR;
if (PL_in_eval)
sv_catsv(ERRSV, err);
else if (PL_errors)
sv_catsv(PL_errors, err);
else
Perl_warn(aTHX_ "%"SVf, SVfARG(err));
if (PL_parser)
++PL_parser->error_count;
}
OP *
Perl_die_where(pTHX_ const char *message, STRLEN msglen)
{
dVAR;
if (PL_in_eval) {
I32 cxix;
I32 gimme;
if (message) {
if (PL_in_eval & EVAL_KEEPERR) {
static const char prefix[] = "\t(in cleanup) ";
SV * const err = ERRSV;
const char *e = NULL;
if (!SvPOK(err))
sv_setpvs(err,"");
else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
STRLEN len;
e = SvPV_const(err, len);
e += len - msglen;
if (*e != *message || strNE(e,message))
e = NULL;
}
if (!e) {
SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
sv_catpvn(err, prefix, sizeof(prefix)-1);
sv_catpvn(err, message, msglen);
if (ckWARN(WARN_MISC)) {
const STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
Perl_warner(aTHX_ packWARN(WARN_MISC), "%s",
SvPVX_const(err)+start);
}
}
}
else {
sv_setpvn(ERRSV, message, msglen);
}
}
while ((cxix = dopoptoeval(cxstack_ix)) < 0
&& PL_curstackinfo->si_prev)
{
dounwind(-1);
POPSTACK;
}
if (cxix >= 0) {
I32 optype;
register PERL_CONTEXT *cx;
SV **newsp;
if (cxix < cxstack_ix)
dounwind(cxix);
POPBLOCK(cx,PL_curpm);
if (CxTYPE(cx) != CXt_EVAL) {
if (!message)
message = SvPVx_const(ERRSV, msglen);
PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11);
PerlIO_write(Perl_error_log, message, msglen);
my_exit(1);
}
POPEVAL(cx);
if (gimme == G_SCALAR)
*++newsp = &PL_sv_undef;
PL_stack_sp = newsp;
LEAVE;
/* LEAVE could clobber PL_curcop (see save_re_context())
* XXX it might be better to find a way to avoid messing with
* PL_curcop in save_re_context() instead, but this is a more
* minimal fix --GSAR */
PL_curcop = cx->blk_oldcop;
if (optype == OP_REQUIRE) {
const char* const msg = SvPVx_nolen_const(ERRSV);
SV * const nsv = cx->blk_eval.old_namesv;
(void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
&PL_sv_undef, 0);
DIE(aTHX_ "%sCompilation failed in require",
*msg ? msg : "Unknown error\n");
}
assert(CxTYPE(cx) == CXt_EVAL);
return cx->blk_eval.retop;
}
}
if (!message)
message = SvPVx_const(ERRSV, msglen);
write_to_stderr(message, msglen);
my_failure_exit();
/* NOTREACHED */
return 0;
}
PP(pp_xor)
{
dVAR; dSP; dPOPTOPssrl;
if (SvTRUE(left) != SvTRUE(right))
RETSETYES;
else
RETSETNO;
}
PP(pp_caller)
{
dVAR;
dSP;
register I32 cxix = dopoptosub(cxstack_ix);
register const PERL_CONTEXT *cx;
register const PERL_CONTEXT *ccstack = cxstack;
const PERL_SI *top_si = PL_curstackinfo;
I32 gimme;
const char *stashname;
I32 count = 0;
if (MAXARG)
count = POPi;
for (;;) {
/* we may be in a higher stacklevel, so dig down deeper */
while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
top_si = top_si->si_prev;
ccstack = top_si->si_cxstack;
cxix = dopoptosub_at(ccstack, top_si->si_cxix);
}
if (cxix < 0) {
if (GIMME != G_ARRAY) {
EXTEND(SP, 1);
RETPUSHUNDEF;
}
RETURN;
}
/* caller() should not report the automatic calls to &DB::sub */
if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 &&
ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
count++;
if (!count--)
break;
cxix = dopoptosub_at(ccstack, cxix - 1);
}
cx = &ccstack[cxix];
if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1);
/* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
field below is defined for any cx. */
/* caller() should not report the automatic calls to &DB::sub */
if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
cx = &ccstack[dbcxix];
}
stashname = CopSTASHPV(cx->blk_oldcop);
if (GIMME != G_ARRAY) {
EXTEND(SP, 1);
if (!stashname)
PUSHs(&PL_sv_undef);
else {
dTARGET;
sv_setpv(TARG, stashname);
PUSHs(TARG);
}
RETURN;
}
EXTEND(SP, 11);
if (!stashname)
PUSHs(&PL_sv_undef);
else
mPUSHs(newSVpv(stashname, 0));
mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0));
mPUSHi((I32)CopLINE(cx->blk_oldcop));
if (!MAXARG)
RETURN;
if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
GV * const cvgv = CvGV(ccstack[cxix].blk_sub.cv);
/* So is ccstack[dbcxix]. */
if (isGV(cvgv)) {
SV * const sv = newSV(0);
gv_efullname3(sv, cvgv, NULL);
mPUSHs(sv);
PUSHs(boolSV(CxHASARGS(cx)));
}
else {
PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP));
PUSHs(boolSV(CxHASARGS(cx)));
}
}
else {
PUSHs(newSVpvs_flags("(eval)", SVs_TEMP));
mPUSHi(0);
}
gimme = (I32)cx->blk_gimme;
if (gimme == G_VOID)
PUSHs(&PL_sv_undef);
else
PUSHs(boolSV((gimme & G_WANT) == G_ARRAY));
if (CxTYPE(cx) == CXt_EVAL) {
/* eval STRING */
if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) {
PUSHs(cx->blk_eval.cur_text);
PUSHs(&PL_sv_no);
}
/* require */
else if (cx->blk_eval.old_namesv) {
mPUSHs(newSVsv(cx->blk_eval.old_namesv));
PUSHs(&PL_sv_yes);
}
/* eval BLOCK (try blocks have old_namesv == 0) */
else {
PUSHs(&PL_sv_undef);
PUSHs(&PL_sv_undef);
}
}
else {
PUSHs(&PL_sv_undef);
PUSHs(&PL_sv_undef);
}
if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)
&& CopSTASH_eq(PL_curcop, PL_debstash))
{
AV * const ary = cx->blk_sub.argarray;
const int off = AvARRAY(ary) - AvALLOC(ary);
if (!PL_dbargs) {
GV* const tmpgv = gv_fetchpvs("DB::args", GV_ADD, SVt_PVAV);
PL_dbargs = GvAV(gv_AVadd(tmpgv));
GvMULTI_on(tmpgv);
AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
}
if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
av_extend(PL_dbargs, AvFILLp(ary) + off);
Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
}
/* XXX only hints propagated via op_private are currently
* visible (others are not easily accessible, since they
* use the global PL_hints) */
mPUSHi(CopHINTS_get(cx->blk_oldcop));
{
SV * mask ;
STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ;
if (old_warnings == pWARN_NONE ||
(old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
mask = newSVpvn(WARN_NONEstring, WARNsize) ;
else if (old_warnings == pWARN_ALL ||
(old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) {
/* Get the bit mask for $warnings::Bits{all}, because
* it could have been extended by warnings::register */
SV **bits_all;
HV * const bits = get_hv("warnings::Bits", 0);
if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) {
mask = newSVsv(*bits_all);
}
else {
mask = newSVpvn(WARN_ALLstring, WARNsize) ;
}
}
else
mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]);
mPUSHs(mask);
}
PUSHs(cx->blk_oldcop->cop_hints_hash ?
sv_2mortal(newRV_noinc(
MUTABLE_SV(Perl_refcounted_he_chain_2hv(aTHX_
cx->blk_oldcop->cop_hints_hash))))
: &PL_sv_undef);
RETURN;
}
PP(pp_reset)
{
dVAR;
dSP;
const char * const tmps = (MAXARG < 1) ? (const char *)"" : POPpconstx;
sv_reset(tmps, CopSTASH(PL_curcop));
PUSHs(&PL_sv_yes);
RETURN;
}
/* like pp_nextstate, but used instead when the debugger is active */
PP(pp_dbstate)
{
dVAR;
PL_curcop = (COP*)PL_op;
TAINT_NOT; /* Each statement is presumed innocent */
PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
FREETMPS;
if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */
|| SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
{
dSP;
register PERL_CONTEXT *cx;
const I32 gimme = G_ARRAY;
U8 hasargs;
GV * const gv = PL_DBgv;
register CV * const cv = GvCV(gv);
if (!cv)
DIE(aTHX_ "No DB::DB routine defined");
if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
/* don't do recursive DB::DB call */
return NORMAL;
ENTER;
SAVETMPS;
SAVEI32(PL_debug);
SAVESTACK_POS();
PL_debug = 0;
hasargs = 0;
SPAGAIN;
if (CvISXSUB(cv)) {
CvDEPTH(cv)++;
PUSHMARK(SP);
(void)(*CvXSUB(cv))(aTHX_ cv);
CvDEPTH(cv)--;
FREETMPS;
LEAVE;
return NORMAL;
}
else {
PUSHBLOCK(cx, CXt_SUB, SP);
PUSHSUB_DB(cx);
cx->blk_sub.retop = PL_op->op_next;
CvDEPTH(cv)++;
SAVECOMPPAD();
PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
RETURNOP(CvSTART(cv));
}
}
else
return NORMAL;
}
PP(pp_enteriter)
{
dVAR; dSP; dMARK;
register PERL_CONTEXT *cx;
const I32 gimme = GIMME_V;
SV **svp;
U8 cxtype = CXt_LOOP_FOR;
#ifdef USE_ITHREADS
PAD *iterdata;
#endif
ENTER;
SAVETMPS;
if (PL_op->op_targ) {
if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */
SvPADSTALE_off(PAD_SVl(PL_op->op_targ));
SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ),
SVs_PADSTALE, SVs_PADSTALE);
}
SAVEPADSVANDMORTALIZE(PL_op->op_targ);
#ifndef USE_ITHREADS
svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
#else
iterdata = NULL;
#endif
}
else {
GV * const gv = MUTABLE_GV(POPs);
svp = &GvSV(gv); /* symbol table variable */
SAVEGENERICSV(*svp);
*svp = newSV(0);
#ifdef USE_ITHREADS
iterdata = (PAD*)gv;
#endif
}
if (PL_op->op_private & OPpITER_DEF)
cxtype |= CXp_FOR_DEF;
ENTER;
PUSHBLOCK(cx, cxtype, SP);
#ifdef USE_ITHREADS
PUSHLOOP_FOR(cx, iterdata, MARK, PL_op->op_targ);
#else
PUSHLOOP_FOR(cx, svp, MARK, 0);
#endif
if (PL_op->op_flags & OPf_STACKED) {
SV *maybe_ary = POPs;
if (SvTYPE(maybe_ary) != SVt_PVAV) {
dPOPss;
SV * const right = maybe_ary;
SvGETMAGIC(sv);
SvGETMAGIC(right);
if (RANGE_IS_NUMERIC(sv,right)) {
cx->cx_type &= ~CXTYPEMASK;
cx->cx_type |= CXt_LOOP_LAZYIV;
/* Make sure that no-one re-orders cop.h and breaks our
assumptions */
assert(CxTYPE(cx) == CXt_LOOP_LAZYIV);
#ifdef NV_PRESERVES_UV
if ((SvOK(sv) && ((SvNV(sv) < (NV)IV_MIN) ||
(SvNV(sv) > (NV)IV_MAX)))
||
(SvOK(right) && ((SvNV(right) > (NV)IV_MAX) ||
(SvNV(right) < (NV)IV_MIN))))
#else
if ((SvOK(sv) && ((SvNV(sv) <= (NV)IV_MIN)
||
((SvNV(sv) > 0) &&
((SvUV(sv) > (UV)IV_MAX) ||
(SvNV(sv) > (NV)UV_MAX)))))
||
(SvOK(right) && ((SvNV(right) <= (NV)IV_MIN)
||
((SvNV(right) > 0) &&
((SvUV(right) > (UV)IV_MAX) ||
(SvNV(right) > (NV)UV_MAX))))))
#endif
DIE(aTHX_ "Range iterator outside integer range");
cx->blk_loop.state_u.lazyiv.cur = SvIV(sv);
cx->blk_loop.state_u.lazyiv.end = SvIV(right);
#ifdef DEBUGGING
/* for correct -Dstv display */
cx->blk_oldsp = sp - PL_stack_base;
#endif
}
else {
cx->cx_type &= ~CXTYPEMASK;
cx->cx_type |= CXt_LOOP_LAZYSV;
/* Make sure that no-one re-orders cop.h and breaks our
assumptions */
assert(CxTYPE(cx) == CXt_LOOP_LAZYSV);
cx->blk_loop.state_u.lazysv.cur = newSVsv(sv);
cx->blk_loop.state_u.lazysv.end = right;
SvREFCNT_inc(right);
(void) SvPV_force_nolen(cx->blk_loop.state_u.lazysv.cur);
/* This will do the upgrade to SVt_PV, and warn if the value
is uninitialised. */
(void) SvPV_nolen_const(right);
/* Doing this avoids a check every time in pp_iter in pp_hot.c
to replace !SvOK() with a pointer to "". */
if (!SvOK(right)) {
SvREFCNT_dec(right);
cx->blk_loop.state_u.lazysv.end = &PL_sv_no;
}
}
}
else /* SvTYPE(maybe_ary) == SVt_PVAV */ {
cx->blk_loop.state_u.ary.ary = MUTABLE_AV(maybe_ary);
SvREFCNT_inc(maybe_ary);
cx->blk_loop.state_u.ary.ix =
(PL_op->op_private & OPpITER_REVERSED) ?
AvFILL(cx->blk_loop.state_u.ary.ary) + 1 :
-1;
}
}
else { /* iterating over items on the stack */
cx->blk_loop.state_u.ary.ary = NULL; /* means to use the stack */
if (PL_op->op_private & OPpITER_REVERSED) {
cx->blk_loop.state_u.ary.ix = cx->blk_oldsp + 1;
}
else {
cx->blk_loop.state_u.ary.ix = MARK - PL_stack_base;
}
}
RETURN;
}
PP(pp_enterloop)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
const I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
ENTER;
PUSHBLOCK(cx, CXt_LOOP_PLAIN, SP);
PUSHLOOP_PLAIN(cx, SP);
RETURN;
}
PP(pp_leaveloop)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
I32 gimme;
SV **newsp;
PMOP *newpm;
SV **mark;
POPBLOCK(cx,newpm);
assert(CxTYPE_is_LOOP(cx));
mark = newsp;
newsp = PL_stack_base + cx->blk_loop.resetsp;
TAINT_NOT;
if (gimme == G_VOID)
NOOP;
else if (gimme == G_SCALAR) {
if (mark < SP)
*++newsp = sv_mortalcopy(*SP);
else
*++newsp = &PL_sv_undef;
}
else {
while (mark < SP) {
*++newsp = sv_mortalcopy(*++mark);
TAINT_NOT; /* Each item is independent */
}
}
SP = newsp;
PUTBACK;
POPLOOP(cx); /* Stack values are safe: release loop vars ... */
PL_curpm = newpm; /* ... and pop $1 et al */
LEAVE;
LEAVE;
return NORMAL;
}
PP(pp_return)
{
dVAR; dSP; dMARK;
register PERL_CONTEXT *cx;
bool popsub2 = FALSE;
bool clear_errsv = FALSE;
I32 gimme;
SV **newsp;
PMOP *newpm;
I32 optype = 0;
SV *sv;
OP *retop;
const I32 cxix = dopoptosub(cxstack_ix);
if (cxix < 0) {
if (CxMULTICALL(cxstack)) { /* In this case we must be in a
* sort block, which is a CXt_NULL
* not a CXt_SUB */
dounwind(0);
PL_stack_base[1] = *PL_stack_sp;
PL_stack_sp = PL_stack_base + 1;
return 0;
}
else
DIE(aTHX_ "Can't return outside a subroutine");
}
if (cxix < cxstack_ix)
dounwind(cxix);
if (CxMULTICALL(&cxstack[cxix])) {
gimme = cxstack[cxix].blk_gimme;
if (gimme == G_VOID)
PL_stack_sp = PL_stack_base;
else if (gimme == G_SCALAR) {
PL_stack_base[1] = *PL_stack_sp;
PL_stack_sp = PL_stack_base + 1;
}
return 0;
}
POPBLOCK(cx,newpm);
switch (CxTYPE(cx)) {
case CXt_SUB:
popsub2 = TRUE;
retop = cx->blk_sub.retop;
cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */
break;
case CXt_EVAL:
if (!(PL_in_eval & EVAL_KEEPERR))
clear_errsv = TRUE;
POPEVAL(cx);
retop = cx->blk_eval.retop;
if (CxTRYBLOCK(cx))
break;
lex_end();
if (optype == OP_REQUIRE &&
(MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
{
/* Unassume the success we assumed earlier. */
SV * const nsv = cx->blk_eval.old_namesv;
(void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
DIE(aTHX_ "%"SVf" did not return a true value", SVfARG(nsv));
}
break;
case CXt_FORMAT:
POPFORMAT(cx);
retop = cx->blk_sub.retop;
break;
default:
DIE(aTHX_ "panic: return");
}
TAINT_NOT;
if (gimme == G_SCALAR) {
if (MARK < SP) {
if (popsub2) {
if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
if (SvTEMP(TOPs)) {
*++newsp = SvREFCNT_inc(*SP);
FREETMPS;
sv_2mortal(*newsp);
}
else {
sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
FREETMPS;
*++newsp = sv_mortalcopy(sv);
SvREFCNT_dec(sv);
}
}
else
*++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
}
else
*++newsp = sv_mortalcopy(*SP);
}
else
*++newsp = &PL_sv_undef;
}
else if (gimme == G_ARRAY) {
while (++MARK <= SP) {
*++newsp = (popsub2 && SvTEMP(*MARK))
? *MARK : sv_mortalcopy(*MARK);
TAINT_NOT; /* Each item is independent */
}
}
PL_stack_sp = newsp;
LEAVE;
/* Stack values are safe: */
if (popsub2) {
cxstack_ix--;
POPSUB(cx,sv); /* release CV and @_ ... */
}
else
sv = NULL;
PL_curpm = newpm; /* ... and pop $1 et al */
LEAVESUB(sv);
if (clear_errsv) {
CLEAR_ERRSV();
}
return retop;
}
PP(pp_last)
{
dVAR; dSP;
I32 cxix;
register PERL_CONTEXT *cx;
I32 pop2 = 0;
I32 gimme;
I32 optype;
OP *nextop;
SV **newsp;
PMOP *newpm;
SV **mark;
SV *sv = NULL;
if (PL_op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE(aTHX_ "Can't \"last\" outside a loop block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
POPBLOCK(cx,newpm);
cxstack_ix++; /* temporarily protect top context */
mark = newsp;
switch (CxTYPE(cx)) {
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
pop2 = CxTYPE(cx);
newsp = PL_stack_base + cx->blk_loop.resetsp;
nextop = cx->blk_loop.my_op->op_lastop->op_next;
break;
case CXt_SUB:
pop2 = CXt_SUB;
nextop = cx->blk_sub.retop;
break;
case CXt_EVAL:
POPEVAL(cx);
nextop = cx->blk_eval.retop;
break;
case CXt_FORMAT:
POPFORMAT(cx);
nextop = cx->blk_sub.retop;
break;
default:
DIE(aTHX_ "panic: last");
}
TAINT_NOT;
if (gimme == G_SCALAR) {
if (MARK < SP)
*++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
? *SP : sv_mortalcopy(*SP);
else
*++newsp = &PL_sv_undef;
}
else if (gimme == G_ARRAY) {
while (++MARK <= SP) {
*++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
? *MARK : sv_mortalcopy(*MARK);
TAINT_NOT; /* Each item is independent */
}
}
SP = newsp;
PUTBACK;
LEAVE;
cxstack_ix--;
/* Stack values are safe: */
switch (pop2) {
case CXt_LOOP_LAZYIV:
case CXt_LOOP_PLAIN:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
POPLOOP(cx); /* release loop vars ... */
LEAVE;
break;
case CXt_SUB:
POPSUB(cx,sv); /* release CV and @_ ... */
break;
}
PL_curpm = newpm; /* ... and pop $1 et al */
LEAVESUB(sv);
PERL_UNUSED_VAR(optype);
PERL_UNUSED_VAR(gimme);
return nextop;
}
PP(pp_next)
{
dVAR;
I32 cxix;
register PERL_CONTEXT *cx;
I32 inner;
if (PL_op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE(aTHX_ "Can't \"next\" outside a loop block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
/* clear off anything above the scope we're re-entering, but
* save the rest until after a possible continue block */
inner = PL_scopestack_ix;
TOPBLOCK(cx);
if (PL_scopestack_ix < inner)
leave_scope(PL_scopestack[PL_scopestack_ix]);
PL_curcop = cx->blk_oldcop;
return CX_LOOP_NEXTOP_GET(cx);
}
PP(pp_redo)
{
dVAR;
I32 cxix;
register PERL_CONTEXT *cx;
I32 oldsave;
OP* redo_op;
if (PL_op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE(aTHX_ "Can't \"redo\" outside a loop block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
redo_op = cxstack[cxix].blk_loop.my_op->op_redoop;
if (redo_op->op_type == OP_ENTER) {
/* pop one less context to avoid $x being freed in while (my $x..) */
cxstack_ix++;
assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK);
redo_op = redo_op->op_next;
}
TOPBLOCK(cx);
oldsave = PL_scopestack[PL_scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
FREETMPS;
PL_curcop = cx->blk_oldcop;
return redo_op;
}
STATIC OP *
S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit)
{
dVAR;
OP **ops = opstack;
static const char too_deep[] = "Target of goto is too deeply nested";
PERL_ARGS_ASSERT_DOFINDLABEL;
if (ops >= oplimit)
Perl_croak(aTHX_ too_deep);
if (o->op_type == OP_LEAVE ||
o->op_type == OP_SCOPE ||
o->op_type == OP_LEAVELOOP ||
o->op_type == OP_LEAVESUB ||
o->op_type == OP_LEAVETRY)
{
*ops++ = cUNOPo->op_first;
if (ops >= oplimit)
Perl_croak(aTHX_ too_deep);
}
*ops = 0;
if (o->op_flags & OPf_KIDS) {
OP *kid;
/* First try all the kids at this level, since that's likeliest. */
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
CopLABEL(kCOP) && strEQ(CopLABEL(kCOP), label))
return kid;
}
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
if (kid == PL_lastgotoprobe)
continue;
if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
if (ops == opstack)
*ops++ = kid;
else if (ops[-1]->op_type == OP_NEXTSTATE ||
ops[-1]->op_type == OP_DBSTATE)
ops[-1] = kid;
else
*ops++ = kid;
}
if ((o = dofindlabel(kid, label, ops, oplimit)))
return o;
}
}
*ops = 0;
return 0;
}
PP(pp_goto)
{
dVAR; dSP;
OP *retop = NULL;
I32 ix;
register PERL_CONTEXT *cx;
#define GOTO_DEPTH 64
OP *enterops[GOTO_DEPTH];
const char *label = NULL;
const bool do_dump = (PL_op->op_type == OP_DUMP);
static const char must_have_label[] = "goto must have label";
if (PL_op->op_flags & OPf_STACKED) {
SV * const sv = POPs;
/* This egregious kludge implements goto &subroutine */
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
I32 cxix;
register PERL_CONTEXT *cx;
CV *cv = MUTABLE_CV(SvRV(sv));
SV** mark;
I32 items = 0;
I32 oldsave;
bool reified = 0;
retry:
if (!CvROOT(cv) && !CvXSUB(cv)) {
const GV * const gv = CvGV(cv);
if (gv) {
GV *autogv;
SV *tmpstr;
/* autoloaded stub? */
if (cv != GvCV(gv) && (cv = GvCV(gv)))
goto retry;
autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
GvNAMELEN(gv), FALSE);
if (autogv && (cv = GvCV(autogv)))
goto retry;
tmpstr = sv_newmortal();
gv_efullname3(tmpstr, gv, NULL);
DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr));
}
DIE(aTHX_ "Goto undefined subroutine");
}
/* First do some returnish stuff. */
SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */
FREETMPS;
cxix = dopoptosub(cxstack_ix);
if (cxix < 0)
DIE(aTHX_ "Can't goto subroutine outside a subroutine");
if (cxix < cxstack_ix)
dounwind(cxix);
TOPBLOCK(cx);
SPAGAIN;
/* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */
if (CxTYPE(cx) == CXt_EVAL) {
if (CxREALEVAL(cx))
DIE(aTHX_ "Can't goto subroutine from an eval-string");
else
DIE(aTHX_ "Can't goto subroutine from an eval-block");
}
else if (CxMULTICALL(cx))
DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)");
if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) {
/* put @_ back onto stack */
AV* av = cx->blk_sub.argarray;
items = AvFILLp(av) + 1;
EXTEND(SP, items+1); /* @_ could have been extended. */
Copy(AvARRAY(av), SP + 1, items, SV*);
SvREFCNT_dec(GvAV(PL_defgv));
GvAV(PL_defgv) = cx->blk_sub.savearray;
CLEAR_ARGARRAY(av);
/* abandon @_ if it got reified */
if (AvREAL(av)) {
reified = 1;
SvREFCNT_dec(av);
av = newAV();
av_extend(av, items-1);
AvREIFY_only(av);
PAD_SVl(0) = MUTABLE_SV(cx->blk_sub.argarray = av);
}
}
else if (CvISXSUB(cv)) { /* put GvAV(defgv) back onto stack */
AV* const av = GvAV(PL_defgv);
items = AvFILLp(av) + 1;
EXTEND(SP, items+1); /* @_ could have been extended. */
Copy(AvARRAY(av), SP + 1, items, SV*);
}
mark = SP;
SP += items;
if (CxTYPE(cx) == CXt_SUB &&
!(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
SvREFCNT_dec(cx->blk_sub.cv);
oldsave = PL_scopestack[PL_scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
/* Now do some callish stuff. */
SAVETMPS;
SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
if (CvISXSUB(cv)) {
OP* const retop = cx->blk_sub.retop;
SV **newsp;
I32 gimme;
if (reified) {
I32 index;
for (index=0; index<items; index++)
sv_2mortal(SP[-index]);
}
/* XS subs don't have a CxSUB, so pop it */
POPBLOCK(cx, PL_curpm);
/* Push a mark for the start of arglist */
PUSHMARK(mark);
PUTBACK;
(void)(*CvXSUB(cv))(aTHX_ cv);
LEAVE;
return retop;
}
else {
AV* const padlist = CvPADLIST(cv);
if (CxTYPE(cx) == CXt_EVAL) {
PL_in_eval = CxOLD_IN_EVAL(cx);
PL_eval_root = cx->blk_eval.old_eval_root;
cx->cx_type = CXt_SUB;
}
cx->blk_sub.cv = cv;
cx->blk_sub.olddepth = CvDEPTH(cv);
CvDEPTH(cv)++;
if (CvDEPTH(cv) < 2)
SvREFCNT_inc_simple_void_NN(cv);
else {
if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION))
sub_crush_depth(cv);
pad_push(padlist, CvDEPTH(cv));
}
SAVECOMPPAD();
PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv));
if (CxHASARGS(cx))
{
AV *const av = MUTABLE_AV(PAD_SVl(0));
cx->blk_sub.savearray = GvAV(PL_defgv);
GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av));
CX_CURPAD_SAVE(cx->blk_sub);
cx->blk_sub.argarray = av;
if (items >= AvMAX(av) + 1) {
SV **ary = AvALLOC(av);
if (AvARRAY(av) != ary) {
AvMAX(av) += AvARRAY(av) - AvALLOC(av);
AvARRAY(av) = ary;
}
if (items >= AvMAX(av) + 1) {
AvMAX(av) = items - 1;
Renew(ary,items+1,SV*);
AvALLOC(av) = ary;
AvARRAY(av) = ary;
}
}
++mark;
Copy(mark,AvARRAY(av),items,SV*);
AvFILLp(av) = items - 1;
assert(!AvREAL(av));
if (reified) {
/* transfer 'ownership' of refcnts to new @_ */
AvREAL_on(av);
AvREIFY_off(av);
}
while (items--) {
if (*mark)
SvTEMP_off(*mark);
mark++;
}
}
if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
Perl_get_db_sub(aTHX_ NULL, cv);
if (PERLDB_GOTO) {
CV * const gotocv = get_cvs("DB::goto", 0);
if (gotocv) {
PUSHMARK( PL_stack_sp );
call_sv(MUTABLE_SV(gotocv), G_SCALAR | G_NODEBUG);
PL_stack_sp--;
}
}
}
RETURNOP(CvSTART(cv));
}
}
else {
label = SvPV_nolen_const(sv);
if (!(do_dump || *label))
DIE(aTHX_ must_have_label);
}
}
else if (PL_op->op_flags & OPf_SPECIAL) {
if (! do_dump)
DIE(aTHX_ must_have_label);
}
else
label = cPVOP->op_pv;
if (label && *label) {
OP *gotoprobe = NULL;
bool leaving_eval = FALSE;
bool in_block = FALSE;
PERL_CONTEXT *last_eval_cx = NULL;
/* find label */
PL_lastgotoprobe = NULL;
*enterops = 0;
for (ix = cxstack_ix; ix >= 0; ix--) {
cx = &cxstack[ix];
switch (CxTYPE(cx)) {
case CXt_EVAL:
leaving_eval = TRUE;
if (!CxTRYBLOCK(cx)) {
gotoprobe = (last_eval_cx ?
last_eval_cx->blk_eval.old_eval_root :
PL_eval_root);
last_eval_cx = cx;
break;
}
/* else fall through */
case CXt_LOOP_LAZYIV:
case CXt_LOOP_LAZYSV:
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
case CXt_GIVEN:
case CXt_WHEN:
gotoprobe = cx->blk_oldcop->op_sibling;
break;
case CXt_SUBST:
continue;
case CXt_BLOCK:
if (ix) {
gotoprobe = cx->blk_oldcop->op_sibling;
in_block = TRUE;
} else
gotoprobe = PL_main_root;
break;
case CXt_SUB:
if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) {
gotoprobe = CvROOT(cx->blk_sub.cv);
break;
}
/* FALL THROUGH */
case CXt_FORMAT:
case CXt_NULL:
DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
default:
if (ix)
DIE(aTHX_ "panic: goto");
gotoprobe = PL_main_root;
break;
}
if (gotoprobe) {
retop = dofindlabel(gotoprobe, label,
enterops, enterops + GOTO_DEPTH);
if (retop)
break;
}
PL_lastgotoprobe = gotoprobe;
}
if (!retop)
DIE(aTHX_ "Can't find label %s", label);
/* if we're leaving an eval, check before we pop any frames
that we're not going to punt, otherwise the error
won't be caught */
if (leaving_eval && *enterops && enterops[1]) {
I32 i;
for (i = 1; enterops[i]; i++)
if (enterops[i]->op_type == OP_ENTERITER)
DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
}
/* pop unwanted frames */
if (ix < cxstack_ix) {
I32 oldsave;
if (ix < 0)
ix = 0;
dounwind(ix);
TOPBLOCK(cx);
oldsave = PL_scopestack[PL_scopestack_ix];
LEAVE_SCOPE(oldsave);
}
/* push wanted frames */
if (*enterops && enterops[1]) {
OP * const oldop = PL_op;
ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1;
for (; enterops[ix]; ix++) {
PL_op = enterops[ix];
/* Eventually we may want to stack the needed arguments
* for each op. For now, we punt on the hard ones. */
if (PL_op->op_type == OP_ENTERITER)
DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
CALL_FPTR(PL_op->op_ppaddr)(aTHX);
}
PL_op = oldop;
}
}
if (do_dump) {
#ifdef VMS
if (!retop) retop = PL_main_start;
#endif
PL_restartop = retop;
PL_do_undump = TRUE;
my_unexec();
PL_restartop = 0; /* hmm, must be GNU unexec().. */
PL_do_undump = FALSE;
}
RETURNOP(retop);
}
PP(pp_exit)
{
dVAR;
dSP;
I32 anum;
if (MAXARG < 1)
anum = 0;
else {
anum = SvIVx(POPs);
#ifdef VMS
if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
anum = 0;
VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
#endif
}
PL_exit_flags |= PERL_EXIT_EXPECTED;
#ifdef PERL_MAD
/* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */
if (anum || !(PL_minus_c && PL_madskills))
my_exit(anum);
#else
my_exit(anum);
#endif
PUSHs(&PL_sv_undef);
RETURN;
}
/* Eval. */
STATIC void
S_save_lines(pTHX_ AV *array, SV *sv)
{
const char *s = SvPVX_const(sv);
const char * const send = SvPVX_const(sv) + SvCUR(sv);
I32 line = 1;
PERL_ARGS_ASSERT_SAVE_LINES;
while (s && s < send) {
const char *t;
SV * const tmpstr = newSV_type(SVt_PVMG);
t = (const char *)memchr(s, '\n', send - s);
if (t)
t++;
else
t = send;
sv_setpvn(tmpstr, s, t - s);
av_store(array, line++, tmpstr);
s = t;
}
}
STATIC OP *
S_docatch(pTHX_ OP *o)
{
dVAR;
int ret;
OP * const oldop = PL_op;
dJMPENV;
#ifdef DEBUGGING
assert(CATCH_GET == TRUE);
#endif
PL_op = o;
JMPENV_PUSH(ret);
switch (ret) {
case 0:
assert(cxstack_ix >= 0);
assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env;
redo_body:
CALLRUNOPS(aTHX);
break;
case 3:
/* die caught by an inner eval - continue inner loop */
/* NB XXX we rely on the old popped CxEVAL still being at the top
* of the stack; the way die_where() currently works, this
* assumption is valid. In theory The cur_top_env value should be
* returned in another global, the way retop (aka PL_restartop)
* is. */
assert(CxTYPE(&cxstack[cxstack_ix+1]) == CXt_EVAL);
if (PL_restartop
&& cxstack[cxstack_ix+1].blk_eval.cur_top_env == PL_top_env)
{
PL_op = PL_restartop;
PL_restartop = 0;
goto redo_body;
}
/* FALL THROUGH */
default:
JMPENV_POP;
PL_op = oldop;
JMPENV_JUMP(ret);
/* NOTREACHED */
}
JMPENV_POP;
PL_op = oldop;
return NULL;
}
OP *
Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp)
/* sv Text to convert to OP tree. */
/* startop op_free() this to undo. */
/* code Short string id of the caller. */
{
/* FIXME - how much of this code is common with pp_entereval? */
dVAR; dSP; /* Make POPBLOCK work. */
PERL_CONTEXT *cx;
SV **newsp;
I32 gimme = G_VOID;
I32 optype;
OP dummy;
char tbuf[TYPE_DIGITS(long) + 12 + 10];
char *tmpbuf = tbuf;
char *safestr;
int runtime;
CV* runcv = NULL; /* initialise to avoid compiler warnings */
STRLEN len;
PERL_ARGS_ASSERT_SV_COMPILE_2OP;
ENTER;
lex_start(sv, NULL, FALSE);
SAVETMPS;
/* switch to eval mode */
if (IN_PERL_COMPILETIME) {
SAVECOPSTASH_FREE(&PL_compiling);
CopSTASH_set(&PL_compiling, PL_curstash);
}
if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
SV * const sv = sv_newmortal();
Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
code, (unsigned long)++PL_evalseq,
CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
tmpbuf = SvPVX(sv);
len = SvCUR(sv);
}
else
len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(%.10s_eval %lu)", code,
(unsigned long)++PL_evalseq);
SAVECOPFILE_FREE(&PL_compiling);
CopFILE_set(&PL_compiling, tmpbuf+2);
SAVECOPLINE(&PL_compiling);
CopLINE_set(&PL_compiling, 1);
/* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
deleting the eval's FILEGV from the stash before gv_check() runs
(i.e. before run-time proper). To work around the coredump that
ensues, we always turn GvMULTI_on for any globals that were
introduced within evals. See force_ident(). GSAR 96-10-12 */
safestr = savepvn(tmpbuf, len);
SAVEDELETE(PL_defstash, safestr, len);
SAVEHINTS();
#ifdef OP_IN_REGISTER
PL_opsave = op;
#else
SAVEVPTR(PL_op);
#endif
/* we get here either during compilation, or via pp_regcomp at runtime */
runtime = IN_PERL_RUNTIME;
if (runtime)
runcv = find_runcv(NULL);
PL_op = &dummy;
PL_op->op_type = OP_ENTEREVAL;
PL_op->op_flags = 0; /* Avoid uninit warning. */
PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
PUSHEVAL(cx, 0);
if (runtime)
(void) doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
else
(void) doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
POPBLOCK(cx,PL_curpm);
POPEVAL(cx);
(*startop)->op_type = OP_NULL;
(*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
lex_end();
/* XXX DAPM do this properly one year */
*padp = MUTABLE_AV(SvREFCNT_inc_simple(PL_comppad));
LEAVE;
if (IN_PERL_COMPILETIME)
CopHINTS_set(&PL_compiling, PL_hints);
#ifdef OP_IN_REGISTER
op = PL_opsave;
#endif
PERL_UNUSED_VAR(newsp);
PERL_UNUSED_VAR(optype);
return PL_eval_start;
}
/*
=for apidoc find_runcv
Locate the CV corresponding to the currently executing sub or eval.
If db_seqp is non_null, skip CVs that are in the DB package and populate
*db_seqp with the cop sequence number at the point that the DB:: code was
entered. (allows debuggers to eval in the scope of the breakpoint rather
than in the scope of the debugger itself).
=cut
*/
CV*
Perl_find_runcv(pTHX_ U32 *db_seqp)
{
dVAR;
PERL_SI *si;
if (db_seqp)
*db_seqp = PL_curcop->cop_seq;
for (si = PL_curstackinfo; si; si = si->si_prev) {
I32 ix;
for (ix = si->si_cxix; ix >= 0; ix--) {
const PERL_CONTEXT *cx = &(si->si_cxstack[ix]);
if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
CV * const cv = cx->blk_sub.cv;
/* skip DB:: code */
if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) {
*db_seqp = cx->blk_oldcop->cop_seq;
continue;
}
return cv;
}
else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
return PL_compcv;
}
}
return PL_main_cv;
}
/* Compile a require/do, an eval '', or a /(?{...})/.
* In the last case, startop is non-null, and contains the address of
* a pointer that should be set to the just-compiled code.
* outside is the lexically enclosing CV (if any) that invoked us.
* Returns a bool indicating whether the compile was successful; if so,
* PL_eval_start contains the first op of the compiled ocde; otherwise,
* pushes undef (also croaks if startop != NULL).
*/
STATIC bool
S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq)
{
dVAR; dSP;
OP * const saveop = PL_op;
PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
: EVAL_INEVAL);
PUSHMARK(SP);
SAVESPTR(PL_compcv);
PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
CvEVAL_on(PL_compcv);
assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
CvOUTSIDE_SEQ(PL_compcv) = seq;
CvOUTSIDE(PL_compcv) = MUTABLE_CV(SvREFCNT_inc_simple(outside));
/* set up a scratch pad */
CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
PL_op = NULL; /* avoid PL_op and PL_curpad referring to different CVs */
if (!PL_madskills)
SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
/* make sure we compile in the right package */
if (CopSTASH_ne(PL_curcop, PL_curstash)) {
SAVESPTR(PL_curstash);
PL_curstash = CopSTASH(PL_curcop);
}
/* XXX:ajgo do we really need to alloc an AV for begin/checkunit */
SAVESPTR(PL_beginav);
PL_beginav = newAV();
SAVEFREESV(PL_beginav);
SAVESPTR(PL_unitcheckav);
PL_unitcheckav = newAV();
SAVEFREESV(PL_unitcheckav);
#ifdef PERL_MAD
SAVEBOOL(PL_madskills);
PL_madskills = 0;
#endif
/* try to compile it */
PL_eval_root = NULL;
PL_curcop = &PL_compiling;
CopARYBASE_set(PL_curcop, 0);
if (saveop && (saveop->op_type != OP_REQUIRE) && (saveop->op_flags & OPf_SPECIAL))
PL_in_eval |= EVAL_KEEPERR;
else
CLEAR_ERRSV();
if (yyparse() || PL_parser->error_count || !PL_eval_root) {
SV **newsp; /* Used by POPBLOCK. */
PERL_CONTEXT *cx = &cxstack[cxstack_ix];
I32 optype = 0; /* Might be reset by POPEVAL. */
const char *msg;
PL_op = saveop;
if (PL_eval_root) {
op_free(PL_eval_root);
PL_eval_root = NULL;
}
SP = PL_stack_base + POPMARK; /* pop original mark */
if (!startop) {
POPBLOCK(cx,PL_curpm);
POPEVAL(cx);
}
lex_end();
LEAVE; /* pp_entereval knows about this LEAVE. */
msg = SvPVx_nolen_const(ERRSV);
if (optype == OP_REQUIRE) {
const SV * const nsv = cx->blk_eval.old_namesv;
(void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
&PL_sv_undef, 0);
Perl_croak(aTHX_ "%sCompilation failed in require",
*msg ? msg : "Unknown error\n");
}
else if (startop) {
POPBLOCK(cx,PL_curpm);
POPEVAL(cx);
Perl_croak(aTHX_ "%sCompilation failed in regexp",
(*msg ? msg : "Unknown error\n"));
}
else {
if (!*msg) {
sv_setpvs(ERRSV, "Compilation error");
}
}
PERL_UNUSED_VAR(newsp);
PUSHs(&PL_sv_undef);
PUTBACK;
return FALSE;
}
CopLINE_set(&PL_compiling, 0);
if (startop) {
*startop = PL_eval_root;
} else
SAVEFREEOP(PL_eval_root);
/* Set the context for this new optree.
* If the last op is an OP_REQUIRE, force scalar context.
* Otherwise, propagate the context from the eval(). */
if (PL_eval_root->op_type == OP_LEAVEEVAL
&& cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ
&& cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type
== OP_REQUIRE)
scalar(PL_eval_root);
else if ((gimme & G_WANT) == G_VOID)
scalarvoid(PL_eval_root);
else if ((gimme & G_WANT) == G_ARRAY)
list(PL_eval_root);
else
scalar(PL_eval_root);
DEBUG_x(dump_eval());
/* Register with debugger: */
if (PERLDB_INTER && saveop && saveop->op_type == OP_REQUIRE) {
CV * const cv = get_cvs("DB::postponed", 0);
if (cv) {
dSP;
PUSHMARK(SP);
XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling)));
PUTBACK;
call_sv(MUTABLE_SV(cv), G_DISCARD);
}
}
if (PL_unitcheckav)
call_list(PL_scopestack_ix, PL_unitcheckav);
/* compiled okay, so do it */
CvDEPTH(PL_compcv) = 1;
SP = PL_stack_base + POPMARK; /* pop original mark */
PL_op = saveop; /* The caller may need it. */
PL_parser->lex_state = LEX_NOTPARSING; /* $^S needs this. */
PUTBACK;
return TRUE;
}
STATIC PerlIO *
S_check_type_and_open(pTHX_ const char *name)
{
Stat_t st;
const int st_rc = PerlLIO_stat(name, &st);
PERL_ARGS_ASSERT_CHECK_TYPE_AND_OPEN;
if (st_rc < 0 || S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) {
return NULL;
}
return PerlIO_open(name, PERL_SCRIPT_MODE);
}
#ifndef PERL_DISABLE_PMC
STATIC PerlIO *
S_doopen_pm(pTHX_ const char *name, const STRLEN namelen)
{
PerlIO *fp;
PERL_ARGS_ASSERT_DOOPEN_PM;
if (namelen > 3 && memEQs(name + namelen - 3, 3, ".pm")) {
SV *const pmcsv = newSV(namelen + 2);
char *const pmc = SvPVX(pmcsv);
Stat_t pmcstat;
memcpy(pmc, name, namelen);
pmc[namelen] = 'c';
pmc[namelen + 1] = '\0';
if (PerlLIO_stat(pmc, &pmcstat) < 0) {
fp = check_type_and_open(name);
}
else {
fp = check_type_and_open(pmc);
}
SvREFCNT_dec(pmcsv);
}
else {
fp = check_type_and_open(name);
}
return fp;
}
#else
# define doopen_pm(name, namelen) check_type_and_open(name)
#endif /* !PERL_DISABLE_PMC */
PP(pp_require)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
SV *sv;
const char *name;
STRLEN len;
char * unixname;
STRLEN unixlen;
#ifdef VMS
int vms_unixname = 0;
#endif
const char *tryname = NULL;
SV *namesv = NULL;
const I32 gimme = GIMME_V;
int filter_has_file = 0;
PerlIO *tryrsfp = NULL;
SV *filter_cache = NULL;
SV *filter_state = NULL;
SV *filter_sub = NULL;
SV *hook_sv = NULL;
SV *encoding;
OP *op;
sv = POPs;
if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) {
sv = new_version(sv);
if (!sv_derived_from(PL_patchlevel, "version"))
upg_version(PL_patchlevel, TRUE);
if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) {
if ( vcmp(sv,PL_patchlevel) <= 0 )
DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped",
SVfARG(vnormal(sv)), SVfARG(vnormal(PL_patchlevel)));
}
else {
if ( vcmp(sv,PL_patchlevel) > 0 ) {
I32 first = 0;
AV *lav;
SV * const req = SvRV(sv);
SV * const pv = *hv_fetchs(MUTABLE_HV(req), "original", FALSE);
/* get the left hand term */
lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(req), "version", FALSE)));
first = SvIV(*av_fetch(lav,0,0));
if ( first > (int)PERL_REVISION /* probably 'use 6.0' */
|| hv_exists(MUTABLE_HV(req), "qv", 2 ) /* qv style */
|| av_len(lav) > 1 /* FP with > 3 digits */
|| strstr(SvPVX(pv),".0") /* FP with leading 0 */
) {
DIE(aTHX_ "Perl %"SVf" required--this is only "
"%"SVf", stopped", SVfARG(vnormal(req)),
SVfARG(vnormal(PL_patchlevel)));
}
else { /* probably 'use 5.10' or 'use 5.8' */
SV * hintsv = newSV(0);
I32 second = 0;
if (av_len(lav)>=1)
second = SvIV(*av_fetch(lav,1,0));
second /= second >= 600 ? 100 : 10;
hintsv = Perl_newSVpvf(aTHX_ "v%d.%d.%d",
(int)first, (int)second,0);
upg_version(hintsv, TRUE);
DIE(aTHX_ "Perl %"SVf" required (did you mean %"SVf"?)"
"--this is only %"SVf", stopped",
SVfARG(vnormal(req)),
SVfARG(vnormal(hintsv)),
SVfARG(vnormal(PL_patchlevel)));
}
}
}
/* We do this only with use, not require. */
if (PL_compcv &&
/* If we request a version >= 5.9.5, load feature.pm with the
* feature bundle that corresponds to the required version. */
vcmp(sv, sv_2mortal(upg_version(newSVnv(5.009005), FALSE))) >= 0) {
SV *const importsv = vnormal(sv);
*SvPVX_mutable(importsv) = ':';
ENTER;
Perl_load_module(aTHX_ 0, newSVpvs("feature"), NULL, importsv, NULL);
LEAVE;
}
/* If a version >= 5.11.0 is requested, strictures are on by default! */
if (PL_compcv &&
vcmp(sv, sv_2mortal(upg_version(newSVnv(5.011000), FALSE))) >= 0) {
PL_hints |= (HINT_STRICT_REFS | HINT_STRICT_SUBS | HINT_STRICT_VARS);
}
RETPUSHYES;
}
name = SvPV_const(sv, len);
if (!(name && len > 0 && *name))
DIE(aTHX_ "Null filename used");
TAINT_PROPER("require");
#ifdef VMS
/* The key in the %ENV hash is in the syntax of file passed as the argument
* usually this is in UNIX format, but sometimes in VMS format, which
* can result in a module being pulled in more than once.
* To prevent this, the key must be stored in UNIX format if the VMS
* name can be translated to UNIX.
*/
if ((unixname = tounixspec(name, NULL)) != NULL) {
unixlen = strlen(unixname);
vms_unixname = 1;
}
else
#endif
{
/* if not VMS or VMS name can not be translated to UNIX, pass it
* through.
*/
unixname = (char *) name;
unixlen = len;
}
if (PL_op->op_type == OP_REQUIRE) {
SV * const * const svp = hv_fetch(GvHVn(PL_incgv),
unixname, unixlen, 0);
if ( svp ) {
if (*svp != &PL_sv_undef)
RETPUSHYES;
else
DIE(aTHX_ "Attempt to reload %s aborted.\n"
"Compilation failed in require", unixname);
}
}
/* prepare to compile file */
if (path_is_absolute(name)) {
tryname = name;
tryrsfp = doopen_pm(name, len);
}
if (!tryrsfp) {
AV * const ar = GvAVn(PL_incgv);
I32 i;
#ifdef VMS
if (vms_unixname)
#endif
{
namesv = newSV_type(SVt_PV);
for (i = 0; i <= AvFILL(ar); i++) {
SV * const dirsv = *av_fetch(ar, i, TRUE);
if (SvTIED_mg((const SV *)ar, PERL_MAGIC_tied))
mg_get(dirsv);
if (SvROK(dirsv)) {
int count;
SV **svp;
SV *loader = dirsv;
if (SvTYPE(SvRV(loader)) == SVt_PVAV
&& !sv_isobject(loader))
{
loader = *av_fetch(MUTABLE_AV(SvRV(loader)), 0, TRUE);
}
Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
PTR2UV(SvRV(dirsv)), name);
tryname = SvPVX_const(namesv);
tryrsfp = NULL;
ENTER;
SAVETMPS;
EXTEND(SP, 2);
PUSHMARK(SP);
PUSHs(dirsv);
PUSHs(sv);
PUTBACK;
if (sv_isobject(loader))
count = call_method("INC", G_ARRAY);
else
count = call_sv(loader, G_ARRAY);
SPAGAIN;
/* Adjust file name if the hook has set an %INC entry */
svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
if (svp)
tryname = SvPVX_const(*svp);
if (count > 0) {
int i = 0;
SV *arg;
SP -= count - 1;
arg = SP[i++];
if (SvROK(arg) && (SvTYPE(SvRV(arg)) <= SVt_PVLV)
&& !isGV_with_GP(SvRV(arg))) {
filter_cache = SvRV(arg);
SvREFCNT_inc_simple_void_NN(filter_cache);
if (i < count) {
arg = SP[i++];
}
}
if (SvROK(arg) && isGV_with_GP(SvRV(arg))) {
arg = SvRV(arg);
}
if (isGV_with_GP(arg)) {
IO * const io = GvIO((const GV *)arg);
++filter_has_file;
if (io) {
tryrsfp = IoIFP(io);
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
PerlIO_close(IoOFP(io));
}
IoIFP(io) = NULL;
IoOFP(io) = NULL;
}
if (i < count) {
arg = SP[i++];
}
}
if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
filter_sub = arg;
SvREFCNT_inc_simple_void_NN(filter_sub);
if (i < count) {
filter_state = SP[i];
SvREFCNT_inc_simple_void(filter_state);
}
}
if (!tryrsfp && (filter_cache || filter_sub)) {
tryrsfp = PerlIO_open(BIT_BUCKET,
PERL_SCRIPT_MODE);
}
SP--;
}
PUTBACK;
FREETMPS;
LEAVE;
if (tryrsfp) {
hook_sv = dirsv;
break;
}
filter_has_file = 0;
if (filter_cache) {
SvREFCNT_dec(filter_cache);
filter_cache = NULL;
}
if (filter_state) {
SvREFCNT_dec(filter_state);
filter_state = NULL;
}
if (filter_sub) {
SvREFCNT_dec(filter_sub);
filter_sub = NULL;
}
}
else {
if (!path_is_absolute(name)
) {
const char *dir;
STRLEN dirlen;
if (SvOK(dirsv)) {
dir = SvPV_const(dirsv, dirlen);
} else {
dir = "";
dirlen = 0;
}
#ifdef VMS
char *unixdir;
if ((unixdir = tounixpath(dir, NULL)) == NULL)
continue;
sv_setpv(namesv, unixdir);
sv_catpv(namesv, unixname);
#else
# ifdef __SYMBIAN32__
if (PL_origfilename[0] &&
PL_origfilename[1] == ':' &&
!(dir[0] && dir[1] == ':'))
Perl_sv_setpvf(aTHX_ namesv,
"%c:%s\\%s",
PL_origfilename[0],
dir, name);
else
Perl_sv_setpvf(aTHX_ namesv,
"%s\\%s",
dir, name);
# else
/* The equivalent of
Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
but without the need to parse the format string, or
call strlen on either pointer, and with the correct
allocation up front. */
{
char *tmp = SvGROW(namesv, dirlen + len + 2);
memcpy(tmp, dir, dirlen);
tmp +=dirlen;
*tmp++ = '/';
/* name came from an SV, so it will have a '\0' at the
end that we can copy as part of this memcpy(). */
memcpy(tmp, name, len + 1);
SvCUR_set(namesv, dirlen + len + 1);
/* Don't even actually have to turn SvPOK_on() as we
access it directly with SvPVX() below. */
}
# endif
#endif
TAINT_PROPER("require");
tryname = SvPVX_const(namesv);
tryrsfp = doopen_pm(tryname, SvCUR(namesv));
if (tryrsfp) {
if (tryname[0] == '.' && tryname[1] == '/') {
++tryname;
while (*++tryname == '/');
}
break;
}
else if (errno == EMFILE)
/* no point in trying other paths if out of handles */
break;
}
}
}
}
}
SAVECOPFILE_FREE(&PL_compiling);
CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
SvREFCNT_dec(namesv);
if (!tryrsfp) {
if (PL_op->op_type == OP_REQUIRE) {
const char *msgstr = name;
if(errno == EMFILE) {
SV * const msg
= sv_2mortal(Perl_newSVpvf(aTHX_ "%s: %s", msgstr,
Strerror(errno)));
msgstr = SvPV_nolen_const(msg);
} else {
if (namesv) { /* did we lookup @INC? */
AV * const ar = GvAVn(PL_incgv);
I32 i;
SV * const msg = sv_2mortal(Perl_newSVpvf(aTHX_
"%s in @INC%s%s (@INC contains:",
msgstr,
(instr(msgstr, ".h ")
? " (change .h to .ph maybe?)" : ""),
(instr(msgstr, ".ph ")
? " (did you run h2ph?)" : "")
));
for (i = 0; i <= AvFILL(ar); i++) {
sv_catpvs(msg, " ");
sv_catsv(msg, *av_fetch(ar, i, TRUE));
}
sv_catpvs(msg, ")");
msgstr = SvPV_nolen_const(msg);
}
}
DIE(aTHX_ "Can't locate %s", msgstr);
}
RETPUSHUNDEF;
}
else
SETERRNO(0, SS_NORMAL);
/* Assume success here to prevent recursive requirement. */
/* name is never assigned to again, so len is still strlen(name) */
/* Check whether a hook in @INC has already filled %INC */
if (!hook_sv) {
(void)hv_store(GvHVn(PL_incgv),
unixname, unixlen, newSVpv(CopFILE(&PL_compiling),0),0);
} else {
SV** const svp = hv_fetch(GvHVn(PL_incgv), unixname, unixlen, 0);
if (!svp)
(void)hv_store(GvHVn(PL_incgv),
unixname, unixlen, SvREFCNT_inc_simple(hook_sv), 0 );
}
ENTER;
SAVETMPS;
lex_start(NULL, tryrsfp, TRUE);
SAVEHINTS();
PL_hints = 0;
if (PL_compiling.cop_hints_hash) {
Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
PL_compiling.cop_hints_hash = NULL;
}
SAVECOMPILEWARNINGS();
if (PL_dowarn & G_WARN_ALL_ON)
PL_compiling.cop_warnings = pWARN_ALL ;
else if (PL_dowarn & G_WARN_ALL_OFF)
PL_compiling.cop_warnings = pWARN_NONE ;
else
PL_compiling.cop_warnings = pWARN_STD ;
if (filter_sub || filter_cache) {
SV * const datasv = filter_add(S_run_user_filter, NULL);
IoLINES(datasv) = filter_has_file;
IoTOP_GV(datasv) = MUTABLE_GV(filter_state);
IoBOTTOM_GV(datasv) = MUTABLE_GV(filter_sub);
IoFMT_GV(datasv) = MUTABLE_GV(filter_cache);
}
/* switch to eval mode */
PUSHBLOCK(cx, CXt_EVAL, SP);
PUSHEVAL(cx, name);
cx->blk_eval.retop = PL_op->op_next;
SAVECOPLINE(&PL_compiling);
CopLINE_set(&PL_compiling, 0);
PUTBACK;
/* Store and reset encoding. */
encoding = PL_encoding;
PL_encoding = NULL;
if (doeval(gimme, NULL, NULL, PL_curcop->cop_seq))
op = DOCATCH(PL_eval_start);
else
op = PL_op->op_next;
/* Restore encoding. */
PL_encoding = encoding;
return op;
}
/* This is a op added to hold the hints hash for
pp_entereval. The hash can be modified by the code
being eval'ed, so we return a copy instead. */
PP(pp_hintseval)
{
dVAR;
dSP;
mXPUSHs(MUTABLE_SV(Perl_hv_copy_hints_hv(aTHX_ MUTABLE_HV(cSVOP_sv))));
RETURN;
}
PP(pp_entereval)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
SV *sv;
const I32 gimme = GIMME_V;
const U32 was = PL_breakable_sub_gen;
char tbuf[TYPE_DIGITS(long) + 12];
char *tmpbuf = tbuf;
STRLEN len;
CV* runcv;
U32 seq;
HV *saved_hh = NULL;
if (PL_op->op_private & OPpEVAL_HAS_HH) {
saved_hh = MUTABLE_HV(SvREFCNT_inc(POPs));
}
sv = POPs;
TAINT_IF(SvTAINTED(sv));
TAINT_PROPER("eval");
ENTER;
lex_start(sv, NULL, FALSE);
SAVETMPS;
/* switch to eval mode */
if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
SV * const temp_sv = sv_newmortal();
Perl_sv_setpvf(aTHX_ temp_sv, "_<(eval %lu)[%s:%"IVdf"]",
(unsigned long)++PL_evalseq,
CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
tmpbuf = SvPVX(temp_sv);
len = SvCUR(temp_sv);
}
else
len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(eval %lu)", (unsigned long)++PL_evalseq);
SAVECOPFILE_FREE(&PL_compiling);
CopFILE_set(&PL_compiling, tmpbuf+2);
SAVECOPLINE(&PL_compiling);
CopLINE_set(&PL_compiling, 1);
/* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
deleting the eval's FILEGV from the stash before gv_check() runs
(i.e. before run-time proper). To work around the coredump that
ensues, we always turn GvMULTI_on for any globals that were
introduced within evals. See force_ident(). GSAR 96-10-12 */
SAVEHINTS();
PL_hints = PL_op->op_targ;
if (saved_hh) {
/* SAVEHINTS created a new HV in PL_hintgv, which we need to GC */
SvREFCNT_dec(GvHV(PL_hintgv));
GvHV(PL_hintgv) = saved_hh;
}
SAVECOMPILEWARNINGS();
PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings);
if (PL_compiling.cop_hints_hash) {
Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
}
PL_compiling.cop_hints_hash = PL_curcop->cop_hints_hash;
if (PL_compiling.cop_hints_hash) {
HINTS_REFCNT_LOCK;
PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
HINTS_REFCNT_UNLOCK;
}
/* special case: an eval '' executed within the DB package gets lexically
* placed in the first non-DB CV rather than the current CV - this
* allows the debugger to execute code, find lexicals etc, in the
* scope of the code being debugged. Passing &seq gets find_runcv
* to do the dirty work for us */
runcv = find_runcv(&seq);
PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
PUSHEVAL(cx, 0);
cx->blk_eval.retop = PL_op->op_next;
/* prepare to compile string */
if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash)
save_lines(CopFILEAV(&PL_compiling), PL_parser->linestr);
PUTBACK;
if (doeval(gimme, NULL, runcv, seq)) {
if (was != PL_breakable_sub_gen /* Some subs defined here. */
? (PERLDB_LINE || PERLDB_SAVESRC)
: PERLDB_SAVESRC_NOSUBS) {
/* Retain the filegv we created. */
} else {
char *const safestr = savepvn(tmpbuf, len);
SAVEDELETE(PL_defstash, safestr, len);
}
return DOCATCH(PL_eval_start);
} else {
/* We have already left the scope set up earler thanks to the LEAVE
in doeval(). */
if (was != PL_breakable_sub_gen /* Some subs defined here. */
? (PERLDB_LINE || PERLDB_SAVESRC)
: PERLDB_SAVESRC_INVALID) {
/* Retain the filegv we created. */
} else {
(void)hv_delete(PL_defstash, tmpbuf, len, G_DISCARD);
}
return PL_op->op_next;
}
}
PP(pp_leaveeval)
{
dVAR; dSP;
register SV **mark;
SV **newsp;
PMOP *newpm;
I32 gimme;
register PERL_CONTEXT *cx;
OP *retop;
const U8 save_flags = PL_op -> op_flags;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
retop = cx->blk_eval.retop;
TAINT_NOT;
if (gimme == G_VOID)
MARK = newsp;
else if (gimme == G_SCALAR) {
MARK = newsp + 1;
if (MARK <= SP) {
if (SvFLAGS(TOPs) & SVs_TEMP)
*MARK = TOPs;
else
*MARK = sv_mortalcopy(TOPs);
}
else {
MEXTEND(mark,0);
*MARK = &PL_sv_undef;
}
SP = MARK;
}
else {
/* in case LEAVE wipes old return values */
for (mark = newsp + 1; mark <= SP; mark++) {
if (!(SvFLAGS(*mark) & SVs_TEMP)) {
*mark = sv_mortalcopy(*mark);
TAINT_NOT; /* Each item is independent */
}
}
}
PL_curpm = newpm; /* Don't pop $1 et al till now */
#ifdef DEBUGGING
assert(CvDEPTH(PL_compcv) == 1);
#endif
CvDEPTH(PL_compcv) = 0;
lex_end();
if (optype == OP_REQUIRE &&
!(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
{
/* Unassume the success we assumed earlier. */
SV * const nsv = cx->blk_eval.old_namesv;
(void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
retop = Perl_die(aTHX_ "%"SVf" did not return a true value", SVfARG(nsv));
/* die_where() did LEAVE, or we won't be here */
}
else {
LEAVE;
if (!(save_flags & OPf_SPECIAL)) {
CLEAR_ERRSV();
}
}
RETURNOP(retop);
}
/* Common code for Perl_call_sv and Perl_fold_constants, put here to keep it
close to the related Perl_create_eval_scope. */
void
Perl_delete_eval_scope(pTHX)
{
SV **newsp;
PMOP *newpm;
I32 gimme;
register PERL_CONTEXT *cx;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
PL_curpm = newpm;
LEAVE;
PERL_UNUSED_VAR(newsp);
PERL_UNUSED_VAR(gimme);
PERL_UNUSED_VAR(optype);
}
/* Common-ish code salvaged from Perl_call_sv and pp_entertry, because it was
also needed by Perl_fold_constants. */
PERL_CONTEXT *
Perl_create_eval_scope(pTHX_ U32 flags)
{
PERL_CONTEXT *cx;
const I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
PUSHEVAL(cx, 0);
PL_in_eval = EVAL_INEVAL;
if (flags & G_KEEPERR)
PL_in_eval |= EVAL_KEEPERR;
else
CLEAR_ERRSV();
if (flags & G_FAKINGEVAL) {
PL_eval_root = PL_op; /* Only needed so that goto works right. */
}
return cx;
}
PP(pp_entertry)
{
dVAR;
PERL_CONTEXT * const cx = create_eval_scope(0);
cx->blk_eval.retop = cLOGOP->op_other->op_next;
return DOCATCH(PL_op->op_next);
}
PP(pp_leavetry)
{
dVAR; dSP;
SV **newsp;
PMOP *newpm;
I32 gimme;
register PERL_CONTEXT *cx;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
PERL_UNUSED_VAR(optype);
TAINT_NOT;
if (gimme == G_VOID)
SP = newsp;
else if (gimme == G_SCALAR) {
register SV **mark;
MARK = newsp + 1;
if (MARK <= SP) {
if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
*MARK = TOPs;
else
*MARK = sv_mortalcopy(TOPs);
}
else {
MEXTEND(mark,0);
*MARK = &PL_sv_undef;
}
SP = MARK;
}
else {
/* in case LEAVE wipes old return values */
register SV **mark;
for (mark = newsp + 1; mark <= SP; mark++) {
if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
*mark = sv_mortalcopy(*mark);
TAINT_NOT; /* Each item is independent */
}
}
}
PL_curpm = newpm; /* Don't pop $1 et al till now */
LEAVE;
CLEAR_ERRSV();
RETURN;
}
PP(pp_entergiven)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
const I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
sv_setsv(PAD_SV(PL_op->op_targ), POPs);
PUSHBLOCK(cx, CXt_GIVEN, SP);
PUSHGIVEN(cx);
RETURN;
}
PP(pp_leavegiven)
{
dVAR; dSP;
register PERL_CONTEXT *cx;
I32 gimme;
SV **newsp;
PMOP *newpm;
PERL_UNUSED_CONTEXT;
POPBLOCK(cx,newpm);
assert(CxTYPE(cx) == CXt_GIVEN);
SP = newsp;
PUTBACK;
PL_curpm = newpm; /* pop $1 et al */
LEAVE;
return NORMAL;
}
/* Helper routines used by pp_smartmatch */
STATIC PMOP *
S_make_matcher(pTHX_ REGEXP *re)
{
dVAR;
PMOP *matcher = (PMOP *) newPMOP(OP_MATCH, OPf_WANT_SCALAR | OPf_STACKED);
PERL_ARGS_ASSERT_MAKE_MATCHER;
PM_SETRE(matcher, ReREFCNT_inc(re));
SAVEFREEOP((OP *) matcher);
ENTER; SAVETMPS;
SAVEOP();
return matcher;
}
STATIC bool
S_matcher_matches_sv(pTHX_ PMOP *matcher, SV *sv)
{
dVAR;
dSP;
PERL_ARGS_ASSERT_MATCHER_MATCHES_SV;
PL_op = (OP *) matcher;
XPUSHs(sv);
PUTBACK;
(void) pp_match();
SPAGAIN;
return (SvTRUEx(POPs));
}
STATIC void
S_destroy_matcher(pTHX_ PMOP *matcher)
{
dVAR;
PERL_ARGS_ASSERT_DESTROY_MATCHER;
PERL_UNUSED_ARG(matcher);
FREETMPS;
LEAVE;
}
/* Do a smart match */
PP(pp_smartmatch)
{
return do_smartmatch(NULL, NULL);
}
/* This version of do_smartmatch() implements the
* table of smart matches that is found in perlsyn.
*/
STATIC OP *
S_do_smartmatch(pTHX_ HV *seen_this, HV *seen_other)
{
dVAR;
dSP;
bool object_on_left = FALSE;
SV *e = TOPs; /* e is for 'expression' */
SV *d = TOPm1s; /* d is for 'default', as in PL_defgv */
/* First of all, handle overload magic of the rightmost argument */
if (SvAMAGIC(e)) {
SV * const tmpsv = amagic_call(d, e, smart_amg, 0);
if (tmpsv) {
SPAGAIN;
(void)POPs;
SETs(tmpsv);
RETURN;
}
}
SP -= 2; /* Pop the values */
/* Take care only to invoke mg_get() once for each argument.
* Currently we do this by copying the SV if it's magical. */
if (d) {
if (SvGMAGICAL(d))
d = sv_mortalcopy(d);
}
else
d = &PL_sv_undef;
assert(e);
if (SvGMAGICAL(e))
e = sv_mortalcopy(e);
/* ~~ undef */
if (!SvOK(e)) {
if (SvOK(d))
RETPUSHNO;
else
RETPUSHYES;
}
if (sv_isobject(e) && (SvTYPE(SvRV(e)) != SVt_REGEXP))
Perl_croak(aTHX_ "Smart matching a non-overloaded object breaks encapsulation");
if (sv_isobject(d) && (SvTYPE(SvRV(d)) != SVt_REGEXP))
object_on_left = TRUE;
/* ~~ sub */
if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVCV) {
I32 c;
if (object_on_left) {
goto sm_any_sub; /* Treat objects like scalars */
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) {
/* Test sub truth for each key */
HE *he;
bool andedresults = TRUE;
HV *hv = (HV*) SvRV(d);
I32 numkeys = hv_iterinit(hv);
if (numkeys == 0)
RETPUSHYES;
while ( (he = hv_iternext(hv)) ) {
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUSHs(hv_iterkeysv(he));
PUTBACK;
c = call_sv(e, G_SCALAR);
SPAGAIN;
if (c == 0)
andedresults = FALSE;
else
andedresults = SvTRUEx(POPs) && andedresults;
FREETMPS;
LEAVE;
}
if (andedresults)
RETPUSHYES;
else
RETPUSHNO;
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) {
/* Test sub truth for each element */
I32 i;
bool andedresults = TRUE;
AV *av = (AV*) SvRV(d);
const I32 len = av_len(av);
if (len == -1)
RETPUSHYES;
for (i = 0; i <= len; ++i) {
SV * const * const svp = av_fetch(av, i, FALSE);
ENTER;
SAVETMPS;
PUSHMARK(SP);
if (svp)
PUSHs(*svp);
PUTBACK;
c = call_sv(e, G_SCALAR);
SPAGAIN;
if (c == 0)
andedresults = FALSE;
else
andedresults = SvTRUEx(POPs) && andedresults;
FREETMPS;
LEAVE;
}
if (andedresults)
RETPUSHYES;
else
RETPUSHNO;
}
else {
sm_any_sub:
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUSHs(d);
PUTBACK;
c = call_sv(e, G_SCALAR);
SPAGAIN;
if (c == 0)
PUSHs(&PL_sv_no);
else if (SvTEMP(TOPs))
SvREFCNT_inc_void(TOPs);
FREETMPS;
LEAVE;
RETURN;
}
}
/* ~~ %hash */
else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVHV) {
if (object_on_left) {
goto sm_any_hash; /* Treat objects like scalars */
}
else if (!SvOK(d)) {
RETPUSHNO;
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) {
/* Check that the key-sets are identical */
HE *he;
HV *other_hv = MUTABLE_HV(SvRV(d));
bool tied = FALSE;
bool other_tied = FALSE;
U32 this_key_count = 0,
other_key_count = 0;
HV *hv = MUTABLE_HV(SvRV(e));
/* Tied hashes don't know how many keys they have. */
if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) {
tied = TRUE;
}
else if (SvTIED_mg((const SV *)other_hv, PERL_MAGIC_tied)) {
HV * const temp = other_hv;
other_hv = hv;
hv = temp;
tied = TRUE;
}
if (SvTIED_mg((const SV *)other_hv, PERL_MAGIC_tied))
other_tied = TRUE;
if (!tied && HvUSEDKEYS((const HV *) hv) != HvUSEDKEYS(other_hv))
RETPUSHNO;
/* The hashes have the same number of keys, so it suffices
to check that one is a subset of the other. */
(void) hv_iterinit(hv);
while ( (he = hv_iternext(hv)) ) {
SV *key = hv_iterkeysv(he);
++ this_key_count;
if(!hv_exists_ent(other_hv, key, 0)) {
(void) hv_iterinit(hv); /* reset iterator */
RETPUSHNO;
}
}
if (other_tied) {
(void) hv_iterinit(other_hv);
while ( hv_iternext(other_hv) )
++other_key_count;
}
else
other_key_count = HvUSEDKEYS(other_hv);
if (this_key_count != other_key_count)
RETPUSHNO;
else
RETPUSHYES;
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) {
AV * const other_av = MUTABLE_AV(SvRV(d));
const I32 other_len = av_len(other_av) + 1;
I32 i;
HV *hv = MUTABLE_HV(SvRV(e));
for (i = 0; i < other_len; ++i) {
SV ** const svp = av_fetch(other_av, i, FALSE);
if (svp) { /* ??? When can this not happen? */
if (hv_exists_ent(hv, *svp, 0))
RETPUSHYES;
}
}
RETPUSHNO;
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) {
sm_regex_hash:
{
PMOP * const matcher = make_matcher((REGEXP*) SvRV(d));
HE *he;
HV *hv = MUTABLE_HV(SvRV(e));
(void) hv_iterinit(hv);
while ( (he = hv_iternext(hv)) ) {
if (matcher_matches_sv(matcher, hv_iterkeysv(he))) {
(void) hv_iterinit(hv);
destroy_matcher(matcher);
RETPUSHYES;
}
}
destroy_matcher(matcher);
RETPUSHNO;
}
}
else {
sm_any_hash:
if (hv_exists_ent(MUTABLE_HV(SvRV(e)), d, 0))
RETPUSHYES;
else
RETPUSHNO;
}
}
/* ~~ @array */
else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVAV) {
if (object_on_left) {
goto sm_any_array; /* Treat objects like scalars */
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) {
AV * const other_av = MUTABLE_AV(SvRV(e));
const I32 other_len = av_len(other_av) + 1;
I32 i;
for (i = 0; i < other_len; ++i) {
SV ** const svp = av_fetch(other_av, i, FALSE);
if (svp) { /* ??? When can this not happen? */
if (hv_exists_ent(MUTABLE_HV(SvRV(d)), *svp, 0))
RETPUSHYES;
}
}
RETPUSHNO;
}
if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) {
AV *other_av = MUTABLE_AV(SvRV(d));
if (av_len(MUTABLE_AV(SvRV(e))) != av_len(other_av))
RETPUSHNO;
else {
I32 i;
const I32 other_len = av_len(other_av);
if (NULL == seen_this) {
seen_this = newHV();
(void) sv_2mortal(MUTABLE_SV(seen_this));
}
if (NULL == seen_other) {
seen_this = newHV();
(void) sv_2mortal(MUTABLE_SV(seen_other));
}
for(i = 0; i <= other_len; ++i) {
SV * const * const this_elem = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE);
SV * const * const other_elem = av_fetch(other_av, i, FALSE);
if (!this_elem || !other_elem) {
if (this_elem || other_elem)
RETPUSHNO;
}
else if (hv_exists_ent(seen_this,
sv_2mortal(newSViv(PTR2IV(*this_elem))), 0) ||
hv_exists_ent(seen_other,
sv_2mortal(newSViv(PTR2IV(*other_elem))), 0))
{
if (*this_elem != *other_elem)
RETPUSHNO;
}
else {
(void)hv_store_ent(seen_this,
sv_2mortal(newSViv(PTR2IV(*this_elem))),
&PL_sv_undef, 0);
(void)hv_store_ent(seen_other,
sv_2mortal(newSViv(PTR2IV(*other_elem))),
&PL_sv_undef, 0);
PUSHs(*other_elem);
PUSHs(*this_elem);
PUTBACK;
(void) do_smartmatch(seen_this, seen_other);
SPAGAIN;
if (!SvTRUEx(POPs))
RETPUSHNO;
}
}
RETPUSHYES;
}
}
else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) {
sm_regex_array:
{
PMOP * const matcher = make_matcher((REGEXP*) SvRV(d));
const I32 this_len = av_len(MUTABLE_AV(SvRV(e)));
I32 i;
for(i = 0; i <= this_len; ++i) {
SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE);
if (svp && matcher_matches_sv(matcher, *svp)) {
destroy_matcher(matcher);
RETPUSHYES;
}
}
destroy_matcher(matcher);
RETPUSHNO;
}
}
else if (!SvOK(d)) {
/* undef ~~ array */
const I32 this_len = av_len(MUTABLE_AV(SvRV(e)));
I32 i;
for (i = 0; i <= this_len; ++i) {
SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE);
if (!svp || !SvOK(*svp))
RETPUSHYES;
}
RETPUSHNO;
}
else {
sm_any_array:
{
I32 i;
const I32 this_len = av_len(MUTABLE_AV(SvRV(e)));
for (i = 0; i <= this_len; ++i) {
SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE);
if (!svp)
continue;
PUSHs(d);
PUSHs(*svp);
PUTBACK;
/* infinite recursion isn't supposed to happen here */
(void) do_smartmatch(NULL, NULL);
SPAGAIN;
if (SvTRUEx(POPs))
RETPUSHYES;
}
RETPUSHNO;
}
}
}
/* ~~ qr// */
else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_REGEXP) {
if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) {
SV *t = d; d = e; e = t;
goto sm_regex_hash;
}
else if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) {
SV *t = d; d = e; e = t;
goto sm_regex_array;
}
else {
PMOP * const matcher = make_matcher((REGEXP*) SvRV(e));
PUTBACK;
PUSHs(