/* pp_ctl.c
*
* Copyright (c) 1991-1997, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* 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.
*/
#include "EXTERN.h"
#include "perl.h"
#ifndef WORD_ALIGN
#define WORD_ALIGN sizeof(U16)
#endif
#define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
static OP *docatch _((OP *o));
static OP *doeval _((int gimme));
static OP *dofindlabel _((OP *o, char *label, OP **opstack, OP **oplimit));
static void doparseform _((SV *sv));
static I32 dopoptoeval _((I32 startingblock));
static I32 dopoptolabel _((char *label));
static I32 dopoptoloop _((I32 startingblock));
static I32 dopoptosub _((I32 startingblock));
static void save_lines _((AV *array, SV *sv));
static int sortcv _((const void *, const void *));
static int sortcmp _((const void *, const void *));
static int sortcmp_locale _((const void *, const void *));
static I32 sortcxix;
PP(pp_wantarray)
{
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_regcmaybe)
{
return NORMAL;
}
PP(pp_regcomp) {
dSP;
register PMOP *pm = (PMOP*)cLOGOP->op_other;
register char *t;
SV *tmpstr;
STRLEN len;
tmpstr = POPs;
t = SvPV(tmpstr, len);
/* JMR: Check against the last compiled regexp */
if ( ! pm->op_pmregexp || ! pm->op_pmregexp->precomp
|| strnNE(pm->op_pmregexp->precomp, t, len)
|| pm->op_pmregexp->precomp[len]) {
if (pm->op_pmregexp) {
pregfree(pm->op_pmregexp);
pm->op_pmregexp = Null(REGEXP*); /* crucial if regcomp aborts */
}
pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
pm->op_pmregexp = pregcomp(t, t + len, pm);
}
if (!pm->op_pmregexp->prelen && curpm)
pm = curpm;
else if (strEQ("\\s+", pm->op_pmregexp->precomp))
pm->op_pmflags |= PMf_WHITE;
if (pm->op_pmflags & PMf_KEEP) {
pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
hoistmust(pm);
cLOGOP->op_first->op_next = op->op_next;
}
RETURN;
}
PP(pp_substcont)
{
dSP;
register PMOP *pm = (PMOP*) cLOGOP->op_other;
register CONTEXT *cx = &cxstack[cxstack_ix];
register SV *dstr = cx->sb_dstr;
register char *s = cx->sb_s;
register char *m = cx->sb_m;
char *orig = cx->sb_orig;
register REGEXP *rx = cx->sb_rx;
rxres_restore(&cx->sb_rxres, rx);
if (cx->sb_iters++) {
if (cx->sb_iters > cx->sb_maxiters)
DIE("Substitution loop");
if (!cx->sb_rxtainted)
cx->sb_rxtainted = SvTAINTED(TOPs);
sv_catsv(dstr, POPs);
/* Are we done */
if (cx->sb_once || !pregexec(rx, s, cx->sb_strend, orig,
s == m, Nullsv, cx->sb_safebase))
{
SV *targ = cx->sb_targ;
sv_catpvn(dstr, s, cx->sb_strend - s);
TAINT_IF(cx->sb_rxtainted || rx->exec_tainted);
(void)SvOOK_off(targ);
Safefree(SvPVX(targ));
SvPVX(targ) = SvPVX(dstr);
SvCUR_set(targ, SvCUR(dstr));
SvLEN_set(targ, SvLEN(dstr));
SvPVX(dstr) = 0;
sv_free(dstr);
(void)SvPOK_only(targ);
SvSETMAGIC(targ);
SvTAINT(targ);
PUSHs(sv_2mortal(newSViv((I32)cx->sb_iters - 1)));
LEAVE_SCOPE(cx->sb_oldsave);
POPSUBST(cx);
RETURNOP(pm->op_next);
}
}
if (rx->subbase && rx->subbase != orig) {
m = s;
s = orig;
cx->sb_orig = orig = rx->subbase;
s = orig + (m - s);
cx->sb_strend = s + (cx->sb_strend - m);
}
cx->sb_m = m = rx->startp[0];
sv_catpvn(dstr, s, m-s);
cx->sb_s = rx->endp[0];
cx->sb_rxtainted |= rx->exec_tainted;
rxres_save(&cx->sb_rxres, rx);
RETURNOP(pm->op_pmreplstart);
}
void
rxres_save(rsp, rx)
void **rsp;
REGEXP *rx;
{
UV *p = (UV*)*rsp;
U32 i;
if (!p || p[1] < rx->nparens) {
i = 6 + rx->nparens * 2;
if (!p)
New(501, p, i, UV);
else
Renew(p, i, UV);
*rsp = (void*)p;
}
*p++ = (UV)rx->subbase;
rx->subbase = Nullch;
*p++ = rx->nparens;
*p++ = (UV)rx->subbeg;
*p++ = (UV)rx->subend;
for (i = 0; i <= rx->nparens; ++i) {
*p++ = (UV)rx->startp[i];
*p++ = (UV)rx->endp[i];
}
}
void
rxres_restore(rsp, rx)
void **rsp;
REGEXP *rx;
{
UV *p = (UV*)*rsp;
U32 i;
Safefree(rx->subbase);
rx->subbase = (char*)(*p);
*p++ = 0;
rx->nparens = *p++;
rx->subbeg = (char*)(*p++);
rx->subend = (char*)(*p++);
for (i = 0; i <= rx->nparens; ++i) {
rx->startp[i] = (char*)(*p++);
rx->endp[i] = (char*)(*p++);
}
}
void
rxres_free(rsp)
void **rsp;
{
UV *p = (UV*)*rsp;
if (p) {
Safefree((char*)(*p));
Safefree(p);
*rsp = Null(void*);
}
}
PP(pp_formline)
{
dSP; dMARK; dORIGMARK;
register SV *form = *++MARK;
register U16 *fpc;
register char *t;
register char *f;
register char *s;
register char *send;
register I32 arg;
register SV *sv;
char *item;
I32 itemsize;
I32 fieldsize;
I32 lines = 0;
bool chopspace = (strchr(chopset, ' ') != Nullch);
char *chophere;
char *linemark;
double value;
bool gotsome;
STRLEN len;
if (!SvMAGICAL(form) || !SvCOMPILED(form)) {
SvREADONLY_off(form);
doparseform(form);
}
SvPV_force(formtarget, len);
t = SvGROW(formtarget, len + SvCUR(form) + 1); /* XXX SvCUR bad */
t += len;
f = SvPV(form, len);
/* need to jump to the next word */
s = f + len + WORD_ALIGN - SvCUR(form) % WORD_ALIGN;
fpc = (U16*)s;
for (;;) {
DEBUG_f( {
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;
}
if (arg >= 0)
PerlIO_printf(PerlIO_stderr(), "%-16s%ld\n", name, (long) arg);
else
PerlIO_printf(PerlIO_stderr(), "%-16s\n", name);
} )
switch (*fpc++) {
case FF_LINEMARK:
linemark = t;
lines++;
gotsome = FALSE;
break;
case FF_LITERAL:
arg = *fpc++;
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 = &sv_no;
if (dowarn)
warn("Not enough format arguments");
}
break;
case FF_CHECKNL:
item = s = SvPV(sv, len);
itemsize = len;
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:
item = s = SvPV(sv, len);
itemsize = len;
if (itemsize <= fieldsize) {
send = chophere = s + itemsize;
while (s < send) {
if (*s == '\r') {
itemsize = s - item;
break;
}
if (*s++ & ~31)
gotsome = TRUE;
}
}
else {
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(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:
arg = itemsize;
s = item;
while (arg--) {
#if 'z' - 'a' != 25
int ch = *t++ = *s++;
if (!iscntrl(ch))
t[-1] = ' ';
#else
if ( !((*t++ = *s++) & ~31) )
t[-1] = ' ';
#endif
}
break;
case FF_CHOP:
s = chophere;
if (chopspace) {
while (*s && isSPACE(*s))
s++;
}
sv_chop(sv,s);
break;
case FF_LINEGLOB:
item = s = SvPV(sv, len);
itemsize = len;
if (itemsize) {
gotsome = TRUE;
send = s + itemsize;
while (s < send) {
if (*s++ == '\n') {
if (s == send)
itemsize--;
else
lines++;
}
}
SvCUR_set(formtarget, t - SvPVX(formtarget));
sv_catpvn(formtarget, item, itemsize);
SvGROW(formtarget, SvCUR(formtarget) + SvCUR(form) + 1);
t = SvPVX(formtarget) + SvCUR(formtarget);
}
break;
case FF_DECIMAL:
/* If the field is marked with ^ and the value is undefined,
blank it out. */
arg = *fpc++;
if ((arg & 512) && !SvOK(sv)) {
arg = fieldsize;
while (arg--)
*t++ = ' ';
break;
}
gotsome = TRUE;
value = SvNV(sv);
/* Formats aren't yet marked for locales, so assume "yes". */
SET_NUMERIC_LOCAL();
if (arg & 256) {
sprintf(t, "%#*.*f", (int) fieldsize, (int) arg & 255, value);
} else {
sprintf(t, "%*.0f", (int) fieldsize, value);
}
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(formtarget, t - SvPVX(formtarget));
lines += FmLINES(formtarget);
if (lines == 200) {
arg = t - linemark;
if (strnEQ(linemark, linemark - arg, arg))
DIE("Runaway format");
}
FmLINES(formtarget) = lines;
SP = ORIGMARK;
RETURNOP(cLISTOP->op_first);
}
}
else {
t = linemark;
lines--;
}
break;
case FF_MORE:
if (itemsize) {
arg = fieldsize - itemsize;
if (arg) {
fieldsize -= arg;
while (arg-- > 0)
*t++ = ' ';
}
s = t - 3;
if (strnEQ(s," ",3)) {
while (s > SvPVX(formtarget) && isSPACE(s[-1]))
s--;
}
*s++ = '.';
*s++ = '.';
*s++ = '.';
}
break;
case FF_END:
*t = '\0';
SvCUR_set(formtarget, t - SvPVX(formtarget));
FmLINES(formtarget) += lines;
SP = ORIGMARK;
RETPUSHYES;
}
}
}
PP(pp_grepstart)
{
dSP;
SV *src;
if (stack_base + *markstack_ptr == sp) {
(void)POPMARK;
if (GIMME_V == G_SCALAR)
XPUSHs(&sv_no);
RETURNOP(op->op_next->op_next);
}
stack_sp = stack_base + *markstack_ptr + 1;
pp_pushmark(ARGS); /* push dst */
pp_pushmark(ARGS); /* push src */
ENTER; /* enter outer scope */
SAVETMPS;
SAVESPTR(GvSV(defgv));
ENTER; /* enter inner scope */
SAVESPTR(curpm);
src = stack_base[*markstack_ptr];
SvTEMP_off(src);
GvSV(defgv) = src;
PUTBACK;
if (op->op_type == OP_MAPSTART)
pp_pushmark(ARGS); /* push top */
return ((LOGOP*)op->op_next)->op_other;
}
PP(pp_mapstart)
{
DIE("panic: mapstart"); /* uses grepstart */
}
PP(pp_mapwhile)
{
dSP;
I32 diff = (sp - stack_base) - *markstack_ptr;
I32 count;
I32 shift;
SV** src;
SV** dst;
++markstack_ptr[-1];
if (diff) {
if (diff > markstack_ptr[-1] - markstack_ptr[-2]) {
shift = diff - (markstack_ptr[-1] - markstack_ptr[-2]);
count = (sp - stack_base) - markstack_ptr[-1] + 2;
EXTEND(sp,shift);
src = sp;
dst = (sp += shift);
markstack_ptr[-1] += shift;
*markstack_ptr += shift;
while (--count)
*dst-- = *src--;
}
dst = stack_base + (markstack_ptr[-2] += diff) - 1;
++diff;
while (--diff)
*dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
}
LEAVE; /* exit inner scope */
/* All done yet? */
if (markstack_ptr[-1] > *markstack_ptr) {
I32 items;
I32 gimme = GIMME_V;
(void)POPMARK; /* pop top */
LEAVE; /* exit outer scope */
(void)POPMARK; /* pop src */
items = --*markstack_ptr - markstack_ptr[-1];
(void)POPMARK; /* pop dst */
SP = stack_base + POPMARK; /* pop original mark */
if (gimme == G_SCALAR) {
dTARGET;
XPUSHi(items);
}
else if (gimme == G_ARRAY)
SP += items;
RETURN;
}
else {
SV *src;
ENTER; /* enter inner scope */
SAVESPTR(curpm);
src = stack_base[markstack_ptr[-1]];
SvTEMP_off(src);
GvSV(defgv) = src;
RETURNOP(cLOGOP->op_other);
}
}
PP(pp_sort)
{
dSP; dMARK; dORIGMARK;
register SV **up;
SV **myorigmark = ORIGMARK;
register I32 max;
HV *stash;
GV *gv;
CV *cv;
I32 gimme = GIMME;
OP* nextop = op->op_next;
if (gimme != G_ARRAY) {
SP = MARK;
RETPUSHUNDEF;
}
if (op->op_flags & OPf_STACKED) {
ENTER;
if (op->op_flags & OPf_SPECIAL) {
OP *kid = cLISTOP->op_first->op_sibling; /* pass pushmark */
kid = kUNOP->op_first; /* pass rv2gv */
kid = kUNOP->op_first; /* pass leave */
sortcop = kid->op_next;
stash = curcop->cop_stash;
}
else {
cv = sv_2cv(*++MARK, &stash, &gv, 0);
if (!(cv && CvROOT(cv))) {
if (gv) {
SV *tmpstr = sv_newmortal();
gv_efullname3(tmpstr, gv, Nullch);
if (cv && CvXSUB(cv))
DIE("Xsub \"%s\" called in sort", SvPVX(tmpstr));
DIE("Undefined sort subroutine \"%s\" called",
SvPVX(tmpstr));
}
if (cv) {
if (CvXSUB(cv))
DIE("Xsub called in sort");
DIE("Undefined subroutine in sort");
}
DIE("Not a CODE reference in sort");
}
sortcop = CvSTART(cv);
SAVESPTR(CvROOT(cv)->op_ppaddr);
CvROOT(cv)->op_ppaddr = ppaddr[OP_NULL];
SAVESPTR(curpad);
curpad = AvARRAY((AV*)AvARRAY(CvPADLIST(cv))[1]);
}
}
else {
sortcop = Nullop;
stash = curcop->cop_stash;
}
up = myorigmark + 1;
while (MARK < SP) { /* This may or may not shift down one here. */
/*SUPPRESS 560*/
if (*up = *++MARK) { /* Weed out nulls. */
SvTEMP_off(*up);
if (!sortcop && !SvPOK(*up))
(void)sv_2pv(*up, &na);
up++;
}
}
max = --up - myorigmark;
if (sortcop) {
if (max > 1) {
AV *oldstack;
CONTEXT *cx;
SV** newsp;
bool oldcatch = CATCH_GET;
SAVETMPS;
SAVEOP();
oldstack = curstack;
if (!sortstack) {
sortstack = newAV();
AvREAL_off(sortstack);
av_extend(sortstack, 32);
}
CATCH_SET(TRUE);
SWITCHSTACK(curstack, sortstack);
if (sortstash != stash) {
firstgv = gv_fetchpv("a", TRUE, SVt_PV);
secondgv = gv_fetchpv("b", TRUE, SVt_PV);
sortstash = stash;
}
SAVESPTR(GvSV(firstgv));
SAVESPTR(GvSV(secondgv));
PUSHBLOCK(cx, CXt_NULL, stack_base);
if (!(op->op_flags & OPf_SPECIAL)) {
bool hasargs = FALSE;
cx->cx_type = CXt_SUB;
cx->blk_gimme = G_SCALAR;
PUSHSUB(cx);
if (!CvDEPTH(cv))
(void)SvREFCNT_inc(cv); /* in preparation for POPSUB */
}
sortcxix = cxstack_ix;
qsort((char*)(myorigmark+1), max, sizeof(SV*), sortcv);
POPBLOCK(cx,curpm);
SWITCHSTACK(sortstack, oldstack);
CATCH_SET(oldcatch);
}
LEAVE;
}
else {
if (max > 1) {
MEXTEND(SP, 20); /* Can't afford stack realloc on signal. */
qsort((char*)(ORIGMARK+1), max, sizeof(SV*),
(op->op_private & OPpLOCALE) ? sortcmp_locale : sortcmp);
}
}
stack_sp = ORIGMARK + max;
return nextop;
}
/* Range stuff. */
PP(pp_range)
{
if (GIMME == G_ARRAY)
return cCONDOP->op_true;
return SvTRUEx(PAD_SV(op->op_targ)) ? cCONDOP->op_false : cCONDOP->op_true;
}
PP(pp_flip)
{
dSP;
if (GIMME == G_ARRAY) {
RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
}
else {
dTOPss;
SV *targ = PAD_SV(op->op_targ);
if ((op->op_private & OPpFLIP_LINENUM)
? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
: SvTRUE(sv) ) {
sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
if (op->op_flags & OPf_SPECIAL) {
sv_setiv(targ, 1);
SETs(targ);
RETURN;
}
else {
sv_setiv(targ, 0);
sp--;
RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
}
}
sv_setpv(TARG, "");
SETs(targ);
RETURN;
}
}
PP(pp_flop)
{
dSP;
if (GIMME == G_ARRAY) {
dPOPPOPssrl;
register I32 i;
register SV *sv;
I32 max;
if (SvNIOKp(left) || !SvPOKp(left) ||
(looks_like_number(left) && *SvPVX(left) != '0') )
{
i = SvIV(left);
max = SvIV(right);
if (max >= i) {
EXTEND_MORTAL(max - i + 1);
EXTEND(SP, max - i + 1);
}
while (i <= max) {
sv = sv_2mortal(newSViv(i++));
PUSHs(sv);
}
}
else {
SV *final = sv_mortalcopy(right);
STRLEN len;
char *tmps = SvPV(final, len);
sv = sv_mortalcopy(left);
while (!SvNIOKp(sv) && SvCUR(sv) <= len &&
strNE(SvPVX(sv),tmps) ) {
XPUSHs(sv);
sv = sv_2mortal(newSVsv(sv));
sv_inc(sv);
}
if (strEQ(SvPVX(sv),tmps))
XPUSHs(sv);
}
}
else {
dTOPss;
SV *targ = PAD_SV(cUNOP->op_first->op_targ);
sv_inc(targ);
if ((op->op_private & OPpFLIP_LINENUM)
? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
: SvTRUE(sv) ) {
sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
sv_catpv(targ, "E0");
}
SETs(targ);
}
RETURN;
}
/* Control. */
static I32
dopoptolabel(label)
char *label;
{
dTHR;
register I32 i;
register CONTEXT *cx;
for (i = cxstack_ix; i >= 0; i--) {
cx = &cxstack[i];
switch (cx->cx_type) {
case CXt_SUBST:
if (dowarn)
warn("Exiting substitution via %s", op_name[op->op_type]);
break;
case CXt_SUB:
if (dowarn)
warn("Exiting subroutine via %s", op_name[op->op_type]);
break;
case CXt_EVAL:
if (dowarn)
warn("Exiting eval via %s", op_name[op->op_type]);
break;
case CXt_NULL:
if (dowarn)
warn("Exiting pseudo-block via %s", op_name[op->op_type]);
return -1;
case CXt_LOOP:
if (!cx->blk_loop.label ||
strNE(label, cx->blk_loop.label) ) {
DEBUG_l(deb("(Skipping label #%ld %s)\n",
(long)i, cx->blk_loop.label));
continue;
}
DEBUG_l( deb("(Found label #%ld %s)\n", (long)i, label));
return i;
}
}
return i;
}
I32
dowantarray()
{
I32 gimme = block_gimme();
return (gimme == G_VOID) ? G_SCALAR : gimme;
}
I32
block_gimme()
{
dTHR;
I32 cxix;
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:
croak("panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
}
}
static I32
dopoptosub(startingblock)
I32 startingblock;
{
dTHR;
I32 i;
register CONTEXT *cx;
for (i = startingblock; i >= 0; i--) {
cx = &cxstack[i];
switch (cx->cx_type) {
default:
continue;
case CXt_EVAL:
case CXt_SUB:
DEBUG_l( deb("(Found sub #%ld)\n", (long)i));
return i;
}
}
return i;
}
static I32
dopoptoeval(startingblock)
I32 startingblock;
{
dTHR;
I32 i;
register CONTEXT *cx;
for (i = startingblock; i >= 0; i--) {
cx = &cxstack[i];
switch (cx->cx_type) {
default:
continue;
case CXt_EVAL:
DEBUG_l( deb("(Found eval #%ld)\n", (long)i));
return i;
}
}
return i;
}
static I32
dopoptoloop(startingblock)
I32 startingblock;
{
dTHR;
I32 i;
register CONTEXT *cx;
for (i = startingblock; i >= 0; i--) {
cx = &cxstack[i];
switch (cx->cx_type) {
case CXt_SUBST:
if (dowarn)
warn("Exiting substitution via %s", op_name[op->op_type]);
break;
case CXt_SUB:
if (dowarn)
warn("Exiting subroutine via %s", op_name[op->op_type]);
break;
case CXt_EVAL:
if (dowarn)
warn("Exiting eval via %s", op_name[op->op_type]);
break;
case CXt_NULL:
if (dowarn)
warn("Exiting pseudo-block via %s", op_name[op->op_type]);
return -1;
case CXt_LOOP:
DEBUG_l( deb("(Found loop #%ld)\n", (long)i));
return i;
}
}
return i;
}
void
dounwind(cxix)
I32 cxix;
{
dTHR;
register CONTEXT *cx;
SV **newsp;
I32 optype;
while (cxstack_ix > cxix) {
cx = &cxstack[cxstack_ix];
DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
(long) cxstack_ix+1, block_type[cx->cx_type]));
/* Note: we don't need to restore the base context info till the end. */
switch (cx->cx_type) {
case CXt_SUBST:
POPSUBST(cx);
continue; /* not break */
case CXt_SUB:
POPSUB(cx);
break;
case CXt_EVAL:
POPEVAL(cx);
break;
case CXt_LOOP:
POPLOOP(cx);
break;
case CXt_NULL:
break;
}
cxstack_ix--;
}
}
OP *
die_where(message)
char *message;
{
dTHR;
if (in_eval) {
I32 cxix;
register CONTEXT *cx;
I32 gimme;
SV **newsp;
if (in_eval & 4) {
SV **svp;
STRLEN klen = strlen(message);
svp = hv_fetch(GvHV(errgv), message, klen, TRUE);
if (svp) {
if (!SvIOK(*svp)) {
static char prefix[] = "\t(in cleanup) ";
sv_upgrade(*svp, SVt_IV);
(void)SvIOK_only(*svp);
SvGROW(GvSV(errgv), SvCUR(GvSV(errgv))+sizeof(prefix)+klen);
sv_catpvn(GvSV(errgv), prefix, sizeof(prefix)-1);
sv_catpvn(GvSV(errgv), message, klen);
}
sv_inc(*svp);
}
}
else
sv_setpv(GvSV(errgv), message);
cxix = dopoptoeval(cxstack_ix);
if (cxix >= 0) {
I32 optype;
if (cxix < cxstack_ix)
dounwind(cxix);
POPBLOCK(cx,curpm);
if (cx->cx_type != CXt_EVAL) {
PerlIO_printf(PerlIO_stderr(), "panic: die %s", message);
my_exit(1);
}
POPEVAL(cx);
if (gimme == G_SCALAR)
*++newsp = &sv_undef;
stack_sp = newsp;
LEAVE;
if (optype == OP_REQUIRE) {
char* msg = SvPVx(GvSV(errgv), na);
DIE("%s", *msg ? msg : "Compilation failed in require");
}
return pop_return();
}
}
PerlIO_printf(PerlIO_stderr(), "%s",message);
PerlIO_flush(PerlIO_stderr());
my_failure_exit();
/* NOTREACHED */
return 0;
}
PP(pp_xor)
{
dSP; dPOPTOPssrl;
if (SvTRUE(left) != SvTRUE(right))
RETSETYES;
else
RETSETNO;
}
PP(pp_andassign)
{
dSP;
if (!SvTRUE(TOPs))
RETURN;
else
RETURNOP(cLOGOP->op_other);
}
PP(pp_orassign)
{
dSP;
if (SvTRUE(TOPs))
RETURN;
else
RETURNOP(cLOGOP->op_other);
}
#ifdef DEPRECATED
PP(pp_entersubr)
{
dSP;
SV** mark = (stack_base + *markstack_ptr + 1);
SV* cv = *mark;
while (mark < sp) { /* emulate old interface */
*mark = mark[1];
mark++;
}
*sp = cv;
return pp_entersub(ARGS);
}
#endif
PP(pp_caller)
{
dSP;
register I32 cxix = dopoptosub(cxstack_ix);
register CONTEXT *cx;
I32 dbcxix;
I32 gimme;
SV *sv;
I32 count = 0;
if (MAXARG)
count = POPi;
EXTEND(SP, 6);
for (;;) {
if (cxix < 0) {
if (GIMME != G_ARRAY)
RETPUSHUNDEF;
RETURN;
}
if (DBsub && cxix >= 0 &&
cxstack[cxix].blk_sub.cv == GvCV(DBsub))
count++;
if (!count--)
break;
cxix = dopoptosub(cxix - 1);
}
cx = &cxstack[cxix];
if (cxstack[cxix].cx_type == CXt_SUB) {
dbcxix = dopoptosub(cxix - 1);
/* We expect that cxstack[dbcxix] is CXt_SUB, anyway, the
field below is defined for any cx. */
if (DBsub && dbcxix >= 0 && cxstack[dbcxix].blk_sub.cv == GvCV(DBsub))
cx = &cxstack[dbcxix];
}
if (GIMME != G_ARRAY) {
dTARGET;
sv_setpv(TARG, HvNAME(cx->blk_oldcop->cop_stash));
PUSHs(TARG);
RETURN;
}
PUSHs(sv_2mortal(newSVpv(HvNAME(cx->blk_oldcop->cop_stash), 0)));
PUSHs(sv_2mortal(newSVpv(SvPVX(GvSV(cx->blk_oldcop->cop_filegv)), 0)));
PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->cop_line)));
if (!MAXARG)
RETURN;
if (cx->cx_type == CXt_SUB) { /* So is cxstack[dbcxix]. */
sv = NEWSV(49, 0);
gv_efullname3(sv, CvGV(cxstack[cxix].blk_sub.cv), Nullch);
PUSHs(sv_2mortal(sv));
PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
}
else {
PUSHs(sv_2mortal(newSVpv("(eval)",0)));
PUSHs(sv_2mortal(newSViv(0)));
}
gimme = (I32)cx->blk_gimme;
if (gimme == G_VOID)
PUSHs(&sv_undef);
else
PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
if (cx->cx_type == CXt_EVAL) {
if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
PUSHs(cx->blk_eval.cur_text);
PUSHs(&sv_no);
}
else if (cx->blk_eval.old_name) { /* Try blocks have old_name == 0. */
/* Require, put the name. */
PUSHs(sv_2mortal(newSVpv(cx->blk_eval.old_name, 0)));
PUSHs(&sv_yes);
}
}
else if (cx->cx_type == CXt_SUB &&
cx->blk_sub.hasargs &&
curcop->cop_stash == debstash)
{
AV *ary = cx->blk_sub.argarray;
int off = AvARRAY(ary) - AvALLOC(ary);
if (!dbargs) {
GV* tmpgv;
dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
SVt_PVAV)));
GvMULTI_on(tmpgv);
AvREAL_off(dbargs); /* XXX Should be REIFY */
}
if (AvMAX(dbargs) < AvFILL(ary) + off)
av_extend(dbargs, AvFILL(ary) + off);
Copy(AvALLOC(ary), AvARRAY(dbargs), AvFILL(ary) + 1 + off, SV*);
AvFILL(dbargs) = AvFILL(ary) + off;
}
RETURN;
}
static int
sortcv(a, b)
const void *a;
const void *b;
{
dTHR;
SV * const *str1 = (SV * const *)a;
SV * const *str2 = (SV * const *)b;
I32 oldsaveix = savestack_ix;
I32 oldscopeix = scopestack_ix;
I32 result;
GvSV(firstgv) = *str1;
GvSV(secondgv) = *str2;
stack_sp = stack_base;
op = sortcop;
runops();
if (stack_sp != stack_base + 1)
croak("Sort subroutine didn't return single value");
if (!SvNIOKp(*stack_sp))
croak("Sort subroutine didn't return a numeric value");
result = SvIV(*stack_sp);
while (scopestack_ix > oldscopeix) {
LEAVE;
}
leave_scope(oldsaveix);
return result;
}
static int
sortcmp(a, b)
const void *a;
const void *b;
{
return sv_cmp(*(SV * const *)a, *(SV * const *)b);
}
static int
sortcmp_locale(a, b)
const void *a;
const void *b;
{
return sv_cmp_locale(*(SV * const *)a, *(SV * const *)b);
}
PP(pp_reset)
{
dSP;
char *tmps;
if (MAXARG < 1)
tmps = "";
else
tmps = POPp;
sv_reset(tmps, curcop->cop_stash);
PUSHs(&sv_yes);
RETURN;
}
PP(pp_lineseq)
{
return NORMAL;
}
PP(pp_dbstate)
{
curcop = (COP*)op;
TAINT_NOT; /* Each statement is presumed innocent */
stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
FREETMPS;
if (op->op_private || SvIV(DBsingle) || SvIV(DBsignal) || SvIV(DBtrace))
{
SV **sp;
register CV *cv;
register CONTEXT *cx;
I32 gimme = G_ARRAY;
I32 hasargs;
GV *gv;
gv = DBgv;
cv = GvCV(gv);
if (!cv)
DIE("No DB::DB routine defined");
if (CvDEPTH(cv) >= 1 && !(debug & (1<<30))) /* don't do recursive DB::DB call */
return NORMAL;
ENTER;
SAVETMPS;
SAVEI32(debug);
SAVESTACK_POS();
debug = 0;
hasargs = 0;
sp = stack_sp;
push_return(op->op_next);
PUSHBLOCK(cx, CXt_SUB, sp);
PUSHSUB(cx);
CvDEPTH(cv)++;
(void)SvREFCNT_inc(cv);
SAVESPTR(curpad);
curpad = AvARRAY((AV*)*av_fetch(CvPADLIST(cv),1,FALSE));
RETURNOP(CvSTART(cv));
}
else
return NORMAL;
}
PP(pp_scope)
{
return NORMAL;
}
PP(pp_enteriter)
{
dSP; dMARK;
register CONTEXT *cx;
I32 gimme = GIMME_V;
SV **svp;
ENTER;
SAVETMPS;
if (op->op_targ)
svp = &curpad[op->op_targ]; /* "my" variable */
else
svp = &GvSV((GV*)POPs); /* symbol table variable */
SAVESPTR(*svp);
ENTER;
PUSHBLOCK(cx, CXt_LOOP, SP);
PUSHLOOP(cx, svp, MARK);
if (op->op_flags & OPf_STACKED)
cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
else {
cx->blk_loop.iterary = curstack;
AvFILL(curstack) = sp - stack_base;
cx->blk_loop.iterix = MARK - stack_base;
}
RETURN;
}
PP(pp_enterloop)
{
dSP;
register CONTEXT *cx;
I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
ENTER;
PUSHBLOCK(cx, CXt_LOOP, SP);
PUSHLOOP(cx, 0, SP);
RETURN;
}
PP(pp_leaveloop)
{
dSP;
register CONTEXT *cx;
struct block_loop cxloop;
I32 gimme;
SV **newsp;
PMOP *newpm;
SV **mark;
POPBLOCK(cx,newpm);
mark = newsp;
POPLOOP1(cx); /* Delay POPLOOP2 until stack values are safe */
TAINT_NOT;
if (gimme == G_VOID)
; /* do nothing */
else if (gimme == G_SCALAR) {
if (mark < SP)
*++newsp = sv_mortalcopy(*SP);
else
*++newsp = &sv_undef;
}
else {
while (mark < SP) {
*++newsp = sv_mortalcopy(*++mark);
TAINT_NOT; /* Each item is independent */
}
}
SP = newsp;
PUTBACK;
POPLOOP2(); /* Stack values are safe: release loop vars ... */
curpm = newpm; /* ... and pop $1 et al */
LEAVE;
LEAVE;
return NORMAL;
}
PP(pp_return)
{
dSP; dMARK;
I32 cxix;
register CONTEXT *cx;
struct block_sub cxsub;
bool popsub2 = FALSE;
I32 gimme;
SV **newsp;
PMOP *newpm;
I32 optype = 0;
if (curstack == sortstack) {
if (cxstack_ix == sortcxix || dopoptosub(cxstack_ix) <= sortcxix) {
if (cxstack_ix > sortcxix)
dounwind(sortcxix);
AvARRAY(curstack)[1] = *SP;
stack_sp = stack_base + 1;
return 0;
}
}
cxix = dopoptosub(cxstack_ix);
if (cxix < 0)
DIE("Can't return outside a subroutine");
if (cxix < cxstack_ix)
dounwind(cxix);
POPBLOCK(cx,newpm);
switch (cx->cx_type) {
case CXt_SUB:
POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
popsub2 = TRUE;
break;
case CXt_EVAL:
POPEVAL(cx);
if (optype == OP_REQUIRE &&
(MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
{
/* Unassume the success we assumed earlier. */
char *name = cx->blk_eval.old_name;
(void)hv_delete(GvHVn(incgv), name, strlen(name), G_DISCARD);
DIE("%s did not return a true value", name);
}
break;
default:
DIE("panic: return");
}
TAINT_NOT;
if (gimme == G_SCALAR) {
if (MARK < SP)
*++newsp = (popsub2 && SvTEMP(*SP))
? *SP : sv_mortalcopy(*SP);
else
*++newsp = &sv_undef;
}
else if (gimme == G_ARRAY) {
while (++MARK <= SP) {
*++newsp = (popsub2 && SvTEMP(*MARK))
? *MARK : sv_mortalcopy(*MARK);
TAINT_NOT; /* Each item is independent */
}
}
stack_sp = newsp;
/* Stack values are safe: */
if (popsub2) {
POPSUB2(); /* release CV and @_ ... */
}
curpm = newpm; /* ... and pop $1 et al */
LEAVE;
return pop_return();
}
PP(pp_last)
{
dSP;
I32 cxix;
register CONTEXT *cx;
struct block_loop cxloop;
struct block_sub cxsub;
I32 pop2 = 0;
I32 gimme;
I32 optype;
OP *nextop;
SV **newsp;
PMOP *newpm;
SV **mark = stack_base + cxstack[cxstack_ix].blk_oldsp;
if (op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE("Can't \"last\" outside a block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE("Label not found for \"last %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
POPBLOCK(cx,newpm);
switch (cx->cx_type) {
case CXt_LOOP:
POPLOOP1(cx); /* Delay POPLOOP2 until stack values are safe */
pop2 = CXt_LOOP;
nextop = cxloop.last_op->op_next;
break;
case CXt_SUB:
POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
pop2 = CXt_SUB;
nextop = pop_return();
break;
case CXt_EVAL:
POPEVAL(cx);
nextop = pop_return();
break;
default:
DIE("panic: last");
}
TAINT_NOT;
if (gimme == G_SCALAR) {
if (MARK < SP)
*++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
? *SP : sv_mortalcopy(*SP);
else
*++newsp = &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;
/* Stack values are safe: */
switch (pop2) {
case CXt_LOOP:
POPLOOP2(); /* release loop vars ... */
LEAVE;
break;
case CXt_SUB:
POPSUB2(); /* release CV and @_ ... */
break;
}
curpm = newpm; /* ... and pop $1 et al */
LEAVE;
return nextop;
}
PP(pp_next)
{
I32 cxix;
register CONTEXT *cx;
I32 oldsave;
if (op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE("Can't \"next\" outside a block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE("Label not found for \"next %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
TOPBLOCK(cx);
oldsave = scopestack[scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
return cx->blk_loop.next_op;
}
PP(pp_redo)
{
I32 cxix;
register CONTEXT *cx;
I32 oldsave;
if (op->op_flags & OPf_SPECIAL) {
cxix = dopoptoloop(cxstack_ix);
if (cxix < 0)
DIE("Can't \"redo\" outside a block");
}
else {
cxix = dopoptolabel(cPVOP->op_pv);
if (cxix < 0)
DIE("Label not found for \"redo %s\"", cPVOP->op_pv);
}
if (cxix < cxstack_ix)
dounwind(cxix);
TOPBLOCK(cx);
oldsave = scopestack[scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
return cx->blk_loop.redo_op;
}
static OP* lastgotoprobe;
static OP *
dofindlabel(o,label,opstack,oplimit)
OP *o;
char *label;
OP **opstack;
OP **oplimit;
{
OP *kid;
OP **ops = opstack;
static char too_deep[] = "Target of goto is too deeply nested";
if (ops >= oplimit)
croak(too_deep);
if (o->op_type == OP_LEAVE ||
o->op_type == OP_SCOPE ||
o->op_type == OP_LEAVELOOP ||
o->op_type == OP_LEAVETRY)
{
*ops++ = cUNOPo->op_first;
if (ops >= oplimit)
croak(too_deep);
}
*ops = 0;
if (o->op_flags & OPf_KIDS) {
/* 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) &&
kCOP->cop_label && strEQ(kCOP->cop_label, label))
return kid;
}
for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
if (kid == lastgotoprobe)
continue;
if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
(ops == opstack ||
(ops[-1]->op_type != OP_NEXTSTATE &&
ops[-1]->op_type != OP_DBSTATE)))
*ops++ = kid;
if (o = dofindlabel(kid, label, ops, oplimit))
return o;
}
}
*ops = 0;
return 0;
}
PP(pp_dump)
{
return pp_goto(ARGS);
/*NOTREACHED*/
}
PP(pp_goto)
{
dSP;
OP *retop = 0;
I32 ix;
register CONTEXT *cx;
#define GOTO_DEPTH 64
OP *enterops[GOTO_DEPTH];
char *label;
int do_dump = (op->op_type == OP_DUMP);
label = 0;
if (op->op_flags & OPf_STACKED) {
SV *sv = POPs;
/* This egregious kludge implements goto &subroutine */
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
I32 cxix;
register CONTEXT *cx;
CV* cv = (CV*)SvRV(sv);
SV** mark;
I32 items = 0;
I32 oldsave;
if (!CvROOT(cv) && !CvXSUB(cv)) {
if (CvGV(cv)) {
SV *tmpstr = sv_newmortal();
gv_efullname3(tmpstr, CvGV(cv), Nullch);
DIE("Goto undefined subroutine &%s",SvPVX(tmpstr));
}
DIE("Goto undefined subroutine");
}
/* First do some returnish stuff. */
cxix = dopoptosub(cxstack_ix);
if (cxix < 0)
DIE("Can't goto subroutine outside a subroutine");
if (cxix < cxstack_ix)
dounwind(cxix);
TOPBLOCK(cx);
mark = stack_sp;
if (cx->blk_sub.hasargs) { /* put @_ back onto stack */
AV* av = cx->blk_sub.argarray;
items = AvFILL(av) + 1;
stack_sp++;
EXTEND(stack_sp, items); /* @_ could have been extended. */
Copy(AvARRAY(av), stack_sp, items, SV*);
stack_sp += items;
#ifndef USE_THREADS
SvREFCNT_dec(GvAV(defgv));
GvAV(defgv) = cx->blk_sub.savearray;
#endif /* USE_THREADS */
AvREAL_off(av);
av_clear(av);
}
if (!(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
SvREFCNT_dec(cx->blk_sub.cv);
oldsave = scopestack[scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
/* Now do some callish stuff. */
SAVETMPS;
if (CvXSUB(cv)) {
if (CvOLDSTYLE(cv)) {
I32 (*fp3)_((int,int,int));
while (sp > mark) {
sp[1] = sp[0];
sp--;
}
fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
items = (*fp3)(CvXSUBANY(cv).any_i32,
mark - stack_base + 1,
items);
sp = stack_base + items;
}
else {
stack_sp--; /* There is no cv arg. */
(void)(*CvXSUB(cv))(cv);
}
LEAVE;
return pop_return();
}
else {
AV* padlist = CvPADLIST(cv);
SV** svp = AvARRAY(padlist);
cx->blk_sub.cv = cv;
cx->blk_sub.olddepth = CvDEPTH(cv);
CvDEPTH(cv)++;
if (CvDEPTH(cv) < 2)
(void)SvREFCNT_inc(cv);
else { /* save temporaries on recursion? */
if (CvDEPTH(cv) == 100 && dowarn)
sub_crush_depth(cv);
if (CvDEPTH(cv) > AvFILL(padlist)) {
AV *newpad = newAV();
SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
I32 ix = AvFILL((AV*)svp[1]);
svp = AvARRAY(svp[0]);
for ( ;ix > 0; ix--) {
if (svp[ix] != &sv_undef) {
char *name = SvPVX(svp[ix]);
if ((SvFLAGS(svp[ix]) & SVf_FAKE)
|| *name == '&')
{
/* outer lexical or anon code */
av_store(newpad, ix,
SvREFCNT_inc(oldpad[ix]) );
}
else { /* our own lexical */
if (*name == '@')
av_store(newpad, ix, sv = (SV*)newAV());
else if (*name == '%')
av_store(newpad, ix, sv = (SV*)newHV());
else
av_store(newpad, ix, sv = NEWSV(0,0));
SvPADMY_on(sv);
}
}
else {
av_store(newpad, ix, sv = NEWSV(0,0));
SvPADTMP_on(sv);
}
}
if (cx->blk_sub.hasargs) {
AV* av = newAV();
av_extend(av, 0);
av_store(newpad, 0, (SV*)av);
AvFLAGS(av) = AVf_REIFY;
}
av_store(padlist, CvDEPTH(cv), (SV*)newpad);
AvFILL(padlist) = CvDEPTH(cv);
svp = AvARRAY(padlist);
}
}
#ifdef USE_THREADS
if (!cx->blk_sub.hasargs) {
AV* av = (AV*)curpad[0];
items = AvFILL(av) + 1;
if (items) {
/* Mark is at the end of the stack. */
EXTEND(sp, items);
Copy(AvARRAY(av), sp + 1, items, SV*);
sp += items;
PUTBACK ;
}
}
#endif /* USE_THREADS */
SAVESPTR(curpad);
curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
#ifndef USE_THREADS
if (cx->blk_sub.hasargs)
#endif /* USE_THREADS */
{
AV* av = (AV*)curpad[0];
SV** ary;
#ifndef USE_THREADS
cx->blk_sub.savearray = GvAV(defgv);
GvAV(defgv) = (AV*)SvREFCNT_inc(av);
#endif /* USE_THREADS */
cx->blk_sub.argarray = av;
++mark;
if (items >= AvMAX(av) + 1) {
ary = AvALLOC(av);
if (AvARRAY(av) != ary) {
AvMAX(av) += AvARRAY(av) - AvALLOC(av);
SvPVX(av) = (char*)ary;
}
if (items >= AvMAX(av) + 1) {
AvMAX(av) = items - 1;
Renew(ary,items+1,SV*);
AvALLOC(av) = ary;
SvPVX(av) = (char*)ary;
}
}
Copy(mark,AvARRAY(av),items,SV*);
AvFILL(av) = items - 1;
while (items--) {
if (*mark)
SvTEMP_off(*mark);
mark++;
}
}
if (PERLDB_SUB && curstash != debstash) {
/*
* We do not care about using sv to call CV;
* it's for informational purposes only.
*/
SV *sv = GvSV(DBsub);
save_item(sv);
gv_efullname3(sv, CvGV(cv), Nullch);
}
RETURNOP(CvSTART(cv));
}
}
else
label = SvPV(sv,na);
}
else if (op->op_flags & OPf_SPECIAL) {
if (! do_dump)
DIE("goto must have label");
}
else
label = cPVOP->op_pv;
if (label && *label) {
OP *gotoprobe = 0;
/* find label */
lastgotoprobe = 0;
*enterops = 0;
for (ix = cxstack_ix; ix >= 0; ix--) {
cx = &cxstack[ix];
switch (cx->cx_type) {
case CXt_EVAL:
gotoprobe = eval_root; /* XXX not good for nested eval */
break;
case CXt_LOOP:
gotoprobe = cx->blk_oldcop->op_sibling;
break;
case CXt_SUBST:
continue;
case CXt_BLOCK:
if (ix)
gotoprobe = cx->blk_oldcop->op_sibling;
else
gotoprobe = main_root;
break;
case CXt_SUB:
if (CvDEPTH(cx->blk_sub.cv)) {
gotoprobe = CvROOT(cx->blk_sub.cv);
break;
}
/* FALL THROUGH */
case CXt_NULL:
DIE("Can't \"goto\" outside a block");
default:
if (ix)
DIE("panic: goto");
gotoprobe = main_root;
break;
}
retop = dofindlabel(gotoprobe, label,
enterops, enterops + GOTO_DEPTH);
if (retop)
break;
lastgotoprobe = gotoprobe;
}
if (!retop)
DIE("Can't find label %s", label);
/* pop unwanted frames */
if (ix < cxstack_ix) {
I32 oldsave;
if (ix < 0)
ix = 0;
dounwind(ix);
TOPBLOCK(cx);
oldsave = scopestack[scopestack_ix];
LEAVE_SCOPE(oldsave);
}
/* push wanted frames */
if (*enterops && enterops[1]) {
OP *oldop = op;
for (ix = 1; enterops[ix]; ix++) {
op = enterops[ix];
/* Eventually we may want to stack the needed arguments
* for each op. For now, we punt on the hard ones. */
if (op->op_type == OP_ENTERITER)
DIE("Can't \"goto\" into the middle of a foreach loop",
label);
(*op->op_ppaddr)(ARGS);
}
op = oldop;
}
}
if (do_dump) {
#ifdef VMS
if (!retop) retop = main_start;
#endif
restartop = retop;
do_undump = TRUE;
my_unexec();
restartop = 0; /* hmm, must be GNU unexec().. */
do_undump = FALSE;
}
if (curstack == signalstack) {
restartop = retop;
JMPENV_JUMP(3);
}
RETURNOP(retop);
}
PP(pp_exit)
{
dSP;
I32 anum;
if (MAXARG < 1)
anum = 0;
else {
anum = SvIVx(POPs);
#ifdef VMSISH_EXIT
if (anum == 1 && VMSISH_EXIT)
anum = 0;
#endif
}
my_exit(anum);
PUSHs(&sv_undef);
RETURN;
}
#ifdef NOTYET
PP(pp_nswitch)
{
dSP;
double value = SvNVx(GvSV(cCOP->cop_gv));
register I32 match = I_32(value);
if (value < 0.0) {
if (((double)match) > value)
--match; /* was fractional--truncate other way */
}
match -= cCOP->uop.scop.scop_offset;
if (match < 0)
match = 0;
else if (match > cCOP->uop.scop.scop_max)
match = cCOP->uop.scop.scop_max;
op = cCOP->uop.scop.scop_next[match];
RETURNOP(op);
}
PP(pp_cswitch)
{
dSP;
register I32 match;
if (multiline)
op = op->op_next; /* can't assume anything */
else {
match = *(SvPVx(GvSV(cCOP->cop_gv), na)) & 255;
match -= cCOP->uop.scop.scop_offset;
if (match < 0)
match = 0;
else if (match > cCOP->uop.scop.scop_max)
match = cCOP->uop.scop.scop_max;
op = cCOP->uop.scop.scop_next[match];
}
RETURNOP(op);
}
#endif
/* Eval. */
static void
save_lines(array, sv)
AV *array;
SV *sv;
{
register char *s = SvPVX(sv);
register char *send = SvPVX(sv) + SvCUR(sv);
register char *t;
register I32 line = 1;
while (s && s < send) {
SV *tmpstr = NEWSV(85,0);
sv_upgrade(tmpstr, SVt_PVMG);
t = strchr(s, '\n');
if (t)
t++;
else
t = send;
sv_setpvn(tmpstr, s, t - s);
av_store(array, line++, tmpstr);
s = t;
}
}
static OP *
docatch(o)
OP *o;
{
dTHR;
int ret;
I32 oldrunlevel = runlevel;
OP *oldop = op;
dJMPENV;
op = o;
#ifdef DEBUGGING
assert(CATCH_GET == TRUE);
DEBUG_l(deb("(Setting up local jumplevel, runlevel = %ld)\n", (long)runlevel+1));
#endif
JMPENV_PUSH(ret);
switch (ret) {
default: /* topmost level handles it */
JMPENV_POP;
runlevel = oldrunlevel;
op = oldop;
JMPENV_JUMP(ret);
/* NOTREACHED */
case 3:
if (!restartop) {
PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
break;
}
op = restartop;
restartop = 0;
/* FALL THROUGH */
case 0:
runops();
break;
}
JMPENV_POP;
runlevel = oldrunlevel;
op = oldop;
return Nullop;
}
/* With USE_THREADS, eval_owner must be held on entry to doeval */
static OP *
doeval(gimme)
int gimme;
{
dTHR;
dSP;
OP *saveop = op;
HV *newstash;
CV *caller;
AV* comppadlist;
in_eval = 1;
PUSHMARK(SP);
/* set up a scratch pad */
SAVEI32(padix);
SAVESPTR(curpad);
SAVESPTR(comppad);
SAVESPTR(comppad_name);
SAVEI32(comppad_name_fill);
SAVEI32(min_intro_pending);
SAVEI32(max_intro_pending);
caller = compcv;
SAVESPTR(compcv);
compcv = (CV*)NEWSV(1104,0);
sv_upgrade((SV *)compcv, SVt_PVCV);
CvUNIQUE_on(compcv);
#ifdef USE_THREADS
CvOWNER(compcv) = 0;
New(666, CvMUTEXP(compcv), 1, perl_mutex);
MUTEX_INIT(CvMUTEXP(compcv));
#endif /* USE_THREADS */
comppad = newAV();
av_push(comppad, Nullsv);
curpad = AvARRAY(comppad);
comppad_name = newAV();
comppad_name_fill = 0;
min_intro_pending = 0;
padix = 0;
#ifdef USE_THREADS
av_store(comppad_name, 0, newSVpv("@_", 2));
curpad[0] = (SV*)newAV();
SvPADMY_on(curpad[0]); /* XXX Needed? */
#endif /* USE_THREADS */
comppadlist = newAV();
AvREAL_off(comppadlist);
av_store(comppadlist, 0, (SV*)comppad_name);
av_store(comppadlist, 1, (SV*)comppad);
CvPADLIST(compcv) = comppadlist;
if (saveop->op_type != OP_REQUIRE)
CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc(caller);
SAVEFREESV(compcv);
/* make sure we compile in the right package */
newstash = curcop->cop_stash;
if (curstash != newstash) {
SAVESPTR(curstash);
curstash = newstash;
}
SAVESPTR(beginav);
beginav = newAV();
SAVEFREESV(beginav);
/* try to compile it */
eval_root = Nullop;
error_count = 0;
curcop = &compiling;
curcop->cop_arybase = 0;
SvREFCNT_dec(rs);
rs = newSVpv("\n", 1);
if (saveop->op_flags & OPf_SPECIAL)
in_eval |= 4;
else
sv_setpv(GvSV(errgv),"");
if (yyparse() || error_count || !eval_root) {
SV **newsp;
I32 gimme;
CONTEXT *cx;
I32 optype;
op = saveop;
if (eval_root) {
op_free(eval_root);
eval_root = Nullop;
}
SP = stack_base + POPMARK; /* pop original mark */
POPBLOCK(cx,curpm);
POPEVAL(cx);
pop_return();
lex_end();
LEAVE;
if (optype == OP_REQUIRE) {
char* msg = SvPVx(GvSV(errgv), na);
DIE("%s", *msg ? msg : "Compilation failed in require");
}
SvREFCNT_dec(rs);
rs = SvREFCNT_inc(nrs);
#ifdef USE_THREADS
MUTEX_LOCK(&eval_mutex);
eval_owner = 0;
COND_SIGNAL(&eval_cond);
MUTEX_UNLOCK(&eval_mutex);
#endif /* USE_THREADS */
RETPUSHUNDEF;
}
SvREFCNT_dec(rs);
rs = SvREFCNT_inc(nrs);
compiling.cop_line = 0;
SAVEFREEOP(eval_root);
if (gimme & G_VOID)
scalarvoid(eval_root);
else if (gimme & G_ARRAY)
list(eval_root);
else
scalar(eval_root);
DEBUG_x(dump_eval());
/* Register with debugger: */
if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
CV *cv = perl_get_cv("DB::postponed", FALSE);
if (cv) {
dSP;
PUSHMARK(sp);
XPUSHs((SV*)compiling.cop_filegv);
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
}
}
/* compiled okay, so do it */
CvDEPTH(compcv) = 1;
SP = stack_base + POPMARK; /* pop original mark */
op = saveop; /* The caller may need it. */
#ifdef USE_THREADS
MUTEX_LOCK(&eval_mutex);
eval_owner = 0;
COND_SIGNAL(&eval_cond);
MUTEX_UNLOCK(&eval_mutex);
#endif /* USE_THREADS */
RETURNOP(eval_start);
}
PP(pp_require)
{
dSP;
register CONTEXT *cx;
SV *sv;
char *name;
char *tryname;
SV *namesv = Nullsv;
SV** svp;
I32 gimme = G_SCALAR;
PerlIO *tryrsfp = 0;
sv = POPs;
if (SvNIOKp(sv) && !SvPOKp(sv)) {
SET_NUMERIC_STANDARD();
if (atof(patchlevel) + 0.00000999 < SvNV(sv))
DIE("Perl %s required--this is only version %s, stopped",
SvPV(sv,na),patchlevel);
RETPUSHYES;
}
name = SvPV(sv, na);
if (!*name)
DIE("Null filename used");
TAINT_PROPER("require");
if (op->op_type == OP_REQUIRE &&
(svp = hv_fetch(GvHVn(incgv), name, SvCUR(sv), 0)) &&
*svp != &sv_undef)
RETPUSHYES;
/* prepare to compile file */
if (*name == '/' ||
(*name == '.' &&
(name[1] == '/' ||
(name[1] == '.' && name[2] == '/')))
#ifdef DOSISH
|| (name[0] && name[1] == ':')
#endif
#ifdef WIN32
|| (name[0] == '\\' && name[1] == '\\') /* UNC path */
#endif
#ifdef VMS
|| (strchr(name,':') || ((*name == '[' || *name == '<') &&
(isALNUM(name[1]) || strchr("$-_]>",name[1]))))
#endif
)
{
tryname = name;
tryrsfp = PerlIO_open(name,"r");
}
else {
AV *ar = GvAVn(incgv);
I32 i;
#ifdef VMS
char *unixname;
if ((unixname = tounixspec(name, Nullch)) != Nullch)
#endif
{
namesv = NEWSV(806, 0);
for (i = 0; i <= AvFILL(ar); i++) {
char *dir = SvPVx(*av_fetch(ar, i, TRUE), na);
#ifdef VMS
char *unixdir;
if ((unixdir = tounixpath(dir, Nullch)) == Nullch)
continue;
sv_setpv(namesv, unixdir);
sv_catpv(namesv, unixname);
#else
sv_setpvf(namesv, "%s/%s", dir, name);
#endif
tryname = SvPVX(namesv);
tryrsfp = PerlIO_open(tryname, "r");
if (tryrsfp) {
if (tryname[0] == '.' && tryname[1] == '/')
tryname += 2;
break;
}
}
}
}
SAVESPTR(compiling.cop_filegv);
compiling.cop_filegv = gv_fetchfile(tryrsfp ? tryname : name);
SvREFCNT_dec(namesv);
if (!tryrsfp) {
if (op->op_type == OP_REQUIRE) {
SV *msg = sv_2mortal(newSVpvf("Can't locate %s in @INC", name));
SV *dirmsgsv = NEWSV(0, 0);
AV *ar = GvAVn(incgv);
I32 i;
if (instr(SvPVX(msg), ".h "))
sv_catpv(msg, " (change .h to .ph maybe?)");
if (instr(SvPVX(msg), ".ph "))
sv_catpv(msg, " (did you run h2ph?)");
sv_catpv(msg, " (@INC contains:");
for (i = 0; i <= AvFILL(ar); i++) {
char *dir = SvPVx(*av_fetch(ar, i, TRUE), na);
sv_setpvf(dirmsgsv, " %s", dir);
sv_catsv(msg, dirmsgsv);
}
sv_catpvn(msg, ")", 1);
SvREFCNT_dec(dirmsgsv);
DIE("%_", msg);
}
RETPUSHUNDEF;
}
/* Assume success here to prevent recursive requirement. */
(void)hv_store(GvHVn(incgv), name, strlen(name),
newSVsv(GvSV(compiling.cop_filegv)), 0 );
ENTER;
SAVETMPS;
lex_start(sv_2mortal(newSVpv("",0)));
if (rsfp_filters){
save_aptr(&rsfp_filters);
rsfp_filters = NULL;
}
rsfp = tryrsfp;
name = savepv(name);
SAVEFREEPV(name);
SAVEI32(hints);
hints = 0;
/* switch to eval mode */
push_return(op->op_next);
PUSHBLOCK(cx, CXt_EVAL, SP);
PUSHEVAL(cx, name, compiling.cop_filegv);
compiling.cop_line = 0;
PUTBACK;
#ifdef USE_THREADS
MUTEX_LOCK(&eval_mutex);
if (eval_owner && eval_owner != thr)
while (eval_owner)
COND_WAIT(&eval_cond, &eval_mutex);
eval_owner = thr;
MUTEX_UNLOCK(&eval_mutex);
#endif /* USE_THREADS */
return DOCATCH(doeval(G_SCALAR));
}
PP(pp_dofile)
{
return pp_require(ARGS);
}
PP(pp_entereval)
{
dSP;
register CONTEXT *cx;
dPOPss;
I32 gimme = GIMME_V, was = sub_generation;
char tmpbuf[TYPE_DIGITS(long) + 12];
char *safestr;
STRLEN len;
OP *ret;
if (!SvPV(sv,len) || !len)
RETPUSHUNDEF;
TAINT_PROPER("eval");
ENTER;
lex_start(sv);
SAVETMPS;
/* switch to eval mode */
SAVESPTR(compiling.cop_filegv);
sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++evalseq);
compiling.cop_filegv = gv_fetchfile(tmpbuf+2);
compiling.cop_line = 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 = savepv(tmpbuf);
SAVEDELETE(defstash, safestr, strlen(safestr));
SAVEI32(hints);
hints = op->op_targ;
push_return(op->op_next);
PUSHBLOCK(cx, CXt_EVAL, SP);
PUSHEVAL(cx, 0, compiling.cop_filegv);
/* prepare to compile string */
if (PERLDB_LINE && curstash != debstash)
save_lines(GvAV(compiling.cop_filegv), linestr);
PUTBACK;
#ifdef USE_THREADS
MUTEX_LOCK(&eval_mutex);
if (eval_owner && eval_owner != thr)
while (eval_owner)
COND_WAIT(&eval_cond, &eval_mutex);
eval_owner = thr;
MUTEX_UNLOCK(&eval_mutex);
#endif /* USE_THREADS */
ret = doeval(gimme);
if (PERLDB_INTER && was != sub_generation /* Some subs defined here. */
&& ret != op->op_next) { /* Successive compilation. */
strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
}
return DOCATCH(ret);
}
PP(pp_leaveeval)
{
dSP;
register SV **mark;
SV **newsp;
PMOP *newpm;
I32 gimme;
register CONTEXT *cx;
OP *retop;
U8 save_flags = op -> op_flags;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
retop = pop_return();
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 = &sv_undef;
}
}
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 */
}
}
}
curpm = newpm; /* Don't pop $1 et al till now */
/*
* Closures mentioned at top level of eval cannot be referenced
* again, and their presence indirectly causes a memory leak.
* (Note that the fact that compcv and friends are still set here
* is, AFAIK, an accident.) --Chip
*/
if (AvFILL(comppad_name) >= 0) {
SV **svp = AvARRAY(comppad_name);
I32 ix;
for (ix = AvFILL(comppad_name); ix >= 0; ix--) {
SV *sv = svp[ix];
if (sv && sv != &sv_undef && *SvPVX(sv) == '&') {
SvREFCNT_dec(sv);
svp[ix] = &sv_undef;
sv = curpad[ix];
if (CvCLONE(sv)) {
SvREFCNT_dec(CvOUTSIDE(sv));
CvOUTSIDE(sv) = Nullcv;
}
else {
SvREFCNT_dec(sv);
sv = NEWSV(0,0);
SvPADTMP_on(sv);
curpad[ix] = sv;
}
}
}
}
#ifdef DEBUGGING
assert(CvDEPTH(compcv) == 1);
#endif
CvDEPTH(compcv) = 0;
if (optype == OP_REQUIRE &&
!(gimme == G_SCALAR ? SvTRUE(*sp) : sp > newsp))
{
/* Unassume the success we assumed earlier. */
char *name = cx->blk_eval.old_name;
(void)hv_delete(GvHVn(incgv), name, strlen(name), G_DISCARD);
retop = die("%s did not return a true value", name);
}
lex_end();
LEAVE;
if (!(save_flags & OPf_SPECIAL))
sv_setpv(GvSV(errgv),"");
RETURNOP(retop);
}
PP(pp_entertry)
{
dSP;
register CONTEXT *cx;
I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
push_return(cLOGOP->op_other->op_next);
PUSHBLOCK(cx, CXt_EVAL, SP);
PUSHEVAL(cx, 0, 0);
eval_root = op; /* Only needed so that goto works right. */
in_eval = 1;
sv_setpv(GvSV(errgv),"");
PUTBACK;
return DOCATCH(op->op_next);
}
PP(pp_leavetry)
{
dSP;
register SV **mark;
SV **newsp;
PMOP *newpm;
I32 gimme;
register CONTEXT *cx;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
pop_return();
TAINT_NOT;
if (gimme == G_VOID)
SP = newsp;
else if (gimme == G_SCALAR) {
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 = &sv_undef;
}
SP = MARK;
}
else {
/* in case LEAVE wipes old return values */
for (mark = newsp + 1; mark <= SP; mark++) {
if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
*mark = sv_mortalcopy(*mark);
TAINT_NOT; /* Each item is independent */
}
}
}
curpm = newpm; /* Don't pop $1 et al till now */
LEAVE;
sv_setpv(GvSV(errgv),"");
RETURN;
}
static void
doparseform(sv)
SV *sv;
{
STRLEN len;
register char *s = SvPV_force(sv, len);
register char *send = s + len;
register char *base;
register I32 skipspaces = 0;
bool noblank;
bool repeat;
bool postspace = FALSE;
U16 *fops;
register U16 *fpc;
U16 *linepc;
register I32 arg;
bool ischop;
if (len == 0)
croak("Null picture in formline");
New(804, fops, (send - s)*3+10, U16); /* Almost certainly too long... */
fpc = fops;
if (s < send) {
linepc = fpc;
*fpc++ = FF_LINEMARK;
noblank = repeat = FALSE;
base = s;
}
while (s <= send) {
switch (*s++) {
default:
skipspaces = 0;
continue;
case '~':
if (*s == '~') {
repeat = TRUE;
*s = ' ';
}
noblank = TRUE;
s[-1] = ' ';
/* FALL THROUGH */
case ' ': case '\t':
skipspaces++;
continue;
case '\n': case 0:
arg = s - base;
skipspaces++;
arg -= skipspaces;
if (arg) {
if (postspace)
*fpc++ = FF_SPACE;
*fpc++ = FF_LITERAL;
*fpc++ = arg;
}
postspace = FALSE;
if (s <= send)
skipspaces--;
if (skipspaces) {
*fpc++ = FF_SKIP;
*fpc++ = skipspaces;
}
skipspaces = 0;
if (s <= send)
*fpc++ = FF_NEWLINE;
if (noblank) {
*fpc++ = FF_BLANK;
if (repeat)
arg = fpc - linepc + 1;
else
arg = 0;
*fpc++ = arg;
}
if (s < send) {
linepc = fpc;
*fpc++ = FF_LINEMARK;
noblank = repeat = FALSE;
base = s;
}
else
s++;
continue;
case '@':
case '^':
ischop = s[-1] == '^';
if (postspace) {
*fpc++ = FF_SPACE;
postspace = FALSE;
}
arg = (s - base) - 1;
if (arg) {
*fpc++ = FF_LITERAL;
*fpc++ = arg;
}
base = s - 1;
*fpc++ = FF_FETCH;
if (*s == '*') {
s++;
*fpc++ = 0;
*fpc++ = FF_LINEGLOB;
}
else if (*s == '#' || (*s == '.' && s[1] == '#')) {
arg = ischop ? 512 : 0;
base = s - 1;
while (*s == '#')
s++;
if (*s == '.') {
char *f;
s++;
f = s;
while (*s == '#')
s++;
arg |= 256 + (s - f);
}
*fpc++ = s - base; /* fieldsize for FETCH */
*fpc++ = FF_DECIMAL;
*fpc++ = arg;
}
else {
I32 prespace = 0;
bool ismore = FALSE;
if (*s == '>') {
while (*++s == '>') ;
prespace = FF_SPACE;
}
else if (*s == '|') {
while (*++s == '|') ;
prespace = FF_HALFSPACE;
postspace = TRUE;
}
else {
if (*s == '<')
while (*++s == '<') ;
postspace = TRUE;
}
if (*s == '.' && s[1] == '.' && s[2] == '.') {
s += 3;
ismore = TRUE;
}
*fpc++ = s - base; /* fieldsize for FETCH */
*fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
if (prespace)
*fpc++ = prespace;
*fpc++ = FF_ITEM;
if (ismore)
*fpc++ = FF_MORE;
if (ischop)
*fpc++ = FF_CHOP;
}
base = s;
skipspaces = 0;
continue;
}
}
*fpc++ = FF_END;
arg = fpc - fops;
{ /* need to jump to the next word */
int z;
z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U16) + 4);
s = SvPVX(sv) + SvCUR(sv) + z;
}
Copy(fops, s, arg, U16);
Safefree(fops);
sv_magic(sv, Nullsv, 'f', Nullch, 0);
SvCOMPILED_on(sv);
}