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-rw-r--r--pp_ctl.c2348
1 files changed, 2348 insertions, 0 deletions
diff --git a/pp_ctl.c b/pp_ctl.c
new file mode 100644
index 0000000000..db62e3cc07
--- /dev/null
+++ b/pp_ctl.c
@@ -0,0 +1,2348 @@
+/* pp_ctl.c
+ *
+ * Copyright (c) 1991-1994, 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
+
+static OP *doeval _((int gimme));
+static OP *dofindlabel _((OP *op, char *label, OP **opstack));
+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 sortcmp _((const void *, const void *));
+static int sortcv _((const void *, const void *));
+
+static I32 sortcxix;
+
+PP(pp_wantarray)
+{
+ dSP;
+ I32 cxix;
+ EXTEND(SP, 1);
+
+ cxix = dopoptosub(cxstack_ix);
+ if (cxix < 0)
+ RETPUSHUNDEF;
+
+ if (cxstack[cxix].blk_gimme == G_ARRAY)
+ RETPUSHYES;
+ else
+ RETPUSHNO;
+}
+
+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);
+
+ if (pm->op_pmregexp) {
+ regfree(pm->op_pmregexp);
+ pm->op_pmregexp = Null(REGEXP*); /* crucial if regcomp aborts */
+ }
+
+ pm->op_pmregexp = regcomp(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) {
+#ifdef NOTDEF
+ if (!(pm->op_pmflags & PMf_FOLD))
+ scan_prefix(pm, pm->op_pmregexp->precomp,
+ pm->op_pmregexp->prelen);
+#endif
+ pm->op_pmflags &= ~PMf_RUNTIME; /* no point compiling again */
+ hoistmust(pm);
+ cLOGOP->op_first->op_next = op->op_next;
+ /* XXX delete push code? */
+ }
+ 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 = pm->op_pmregexp;
+
+ if (cx->sb_iters++) {
+ if (cx->sb_iters > cx->sb_maxiters)
+ DIE("Substitution loop");
+
+ sv_catsv(dstr, POPs);
+ if (rx->subbase)
+ Safefree(rx->subbase);
+ rx->subbase = cx->sb_subbase;
+
+ /* Are we done */
+ if (cx->sb_once || !regexec(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);
+ sv_replace(targ, dstr);
+ (void)SvPOK_only(targ);
+ SvSETMAGIC(targ);
+ PUSHs(sv_2mortal(newSViv((I32)cx->sb_iters - 1)));
+ 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_subbase = rx->subbase;
+
+ rx->subbase = Nullch; /* so recursion works */
+ RETURNOP(pm->op_pmreplstart);
+}
+
+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;
+ char *formmark;
+ SV **markmark;
+ double value;
+ bool gotsome;
+ STRLEN len;
+
+ if (!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)
+ fprintf(stderr, "%-16s%ld\n", name, (long) arg);
+ else
+ fprintf(stderr, "%-16s\n", name);
+ } )
+ switch (*fpc++) {
+ case FF_LINEMARK:
+ linemark = t;
+ formmark = f;
+ markmark = MARK;
+ 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);
+ 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 != G_ARRAY)
+ XPUSHs(&sv_no);
+ RETURNOP(op->op_next->op_next);
+ }
+ stack_sp = stack_base + *markstack_ptr + 1;
+ pp_pushmark(); /* push dst */
+ pp_pushmark(); /* 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(); /* 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;
+
+ (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_ARRAY) {
+ dTARGET;
+ XPUSHi(items);
+ RETURN;
+ }
+ 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_efullname(tmpstr, gv);
+ 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. */
+ if (!SvPOK(*up))
+ (void)sv_2pv(*up, &na);
+ else
+ SvTEMP_off(*up);
+ up++;
+ }
+ }
+ max = --up - myorigmark;
+ if (sortcop) {
+ if (max > 1) {
+ AV *oldstack;
+ CONTEXT *cx;
+ SV** newsp;
+
+ SAVETMPS;
+ SAVESPTR(op);
+
+ oldstack = stack;
+ if (!sortstack) {
+ sortstack = newAV();
+ AvREAL_off(sortstack);
+ av_extend(sortstack, 32);
+ }
+ SWITCHSTACK(stack, 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_LOOP, stack_base);
+ sortcxix = cxstack_ix;
+
+ qsort((char*)(myorigmark+1), max, sizeof(SV*), sortcv);
+
+ POPBLOCK(cx,curpm);
+ SWITCHSTACK(sortstack, oldstack);
+ }
+ LEAVE;
+ }
+ else {
+ if (max > 1) {
+ MEXTEND(SP, 20); /* Can't afford stack realloc on signal. */
+ qsort((char*)(ORIGMARK+1), max, sizeof(SV*), 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);
+ 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 (SvNIOK(left) || !SvPOK(left) ||
+ (looks_like_number(left) && *SvPVX(left) != '0') ) {
+ i = SvIV(left);
+ max = SvIV(right);
+ if (max > i)
+ EXTEND(SP, max - i + 1);
+ while (i <= max) {
+ sv = sv_mortalcopy(&sv_no);
+ sv_setiv(sv,i++);
+ PUSHs(sv);
+ }
+ }
+ else {
+ SV *final = sv_mortalcopy(right);
+ STRLEN len;
+ char *tmps = SvPV(final, len);
+
+ sv = sv_mortalcopy(left);
+ while (!SvNIOK(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;
+{
+ 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_LOOP:
+ if (!cx->blk_loop.label ||
+ strNE(label, cx->blk_loop.label) ) {
+ DEBUG_l(deb("(Skipping label #%d %s)\n",
+ i, cx->blk_loop.label));
+ continue;
+ }
+ DEBUG_l( deb("(Found label #%d %s)\n", i, label));
+ return i;
+ }
+ }
+ return i;
+}
+
+static I32
+dopoptosub(startingblock)
+I32 startingblock;
+{
+ 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 #%d)\n", i));
+ return i;
+ }
+ }
+ return i;
+}
+
+static I32
+dopoptoeval(startingblock)
+I32 startingblock;
+{
+ 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 #%d)\n", i));
+ return i;
+ }
+ }
+ return i;
+}
+
+static I32
+dopoptoloop(startingblock)
+I32 startingblock;
+{
+ 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 substitition 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_LOOP:
+ DEBUG_l( deb("(Found loop #%d)\n", i));
+ return i;
+ }
+ }
+ return i;
+}
+
+void
+dounwind(cxix)
+I32 cxix;
+{
+ register CONTEXT *cx;
+ SV **newsp;
+ I32 optype;
+
+ while (cxstack_ix > cxix) {
+ cx = &cxstack[cxstack_ix--];
+ DEBUG_l(fprintf(stderr, "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_SUB:
+ POPSUB(cx);
+ break;
+ case CXt_EVAL:
+ POPEVAL(cx);
+ break;
+ case CXt_LOOP:
+ POPLOOP(cx);
+ break;
+ case CXt_SUBST:
+ break;
+ }
+ }
+}
+
+#ifdef STANDARD_C
+OP *
+die(char* pat, ...)
+#else
+/*VARARGS0*/
+OP *
+die(pat, va_alist)
+ char *pat;
+ va_dcl
+#endif
+{
+ va_list args;
+ char *message;
+ int oldrunlevel = runlevel;
+ int was_in_eval = in_eval;
+
+#ifdef I_STDARG
+ va_start(args, pat);
+#else
+ va_start(args);
+#endif
+ message = mess(pat, &args);
+ va_end(args);
+ restartop = die_where(message);
+ if ((!restartop && was_in_eval) || oldrunlevel > 1)
+ longjmp(top_env, 3);
+ return restartop;
+}
+
+OP *
+die_where(message)
+char *message;
+{
+ if (in_eval) {
+ I32 cxix;
+ register CONTEXT *cx;
+ I32 gimme;
+ SV **newsp;
+
+ sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),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) {
+ fprintf(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)
+ DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
+ return pop_return();
+ }
+ }
+ fputs(message, stderr);
+ (void)fflush(stderr);
+ if (e_fp)
+ (void)UNLINK(e_tmpname);
+ statusvalue >>= 8;
+ my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
+ 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();
+}
+#endif
+
+PP(pp_caller)
+{
+ dSP;
+ register I32 cxix = dopoptosub(cxstack_ix);
+ register CONTEXT *cx;
+ I32 dbcxix;
+ 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 (GIMME != G_ARRAY) {
+ dTARGET;
+
+ sv_setpv(TARG, HvNAME(cx->blk_oldcop->cop_stash));
+ PUSHs(TARG);
+ RETURN;
+ }
+ dbcxix = dopoptosub(cxix - 1);
+ if (DBsub && dbcxix >= 0 && cxstack[dbcxix].blk_sub.cv == GvCV(DBsub))
+ cx = &cxstack[dbcxix];
+
+ 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) {
+ sv = NEWSV(49, 0);
+ gv_efullname(sv, CvGV(cxstack[cxix].blk_sub.cv));
+ 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)));
+ }
+ PUSHs(sv_2mortal(newSViv((I32)cx->blk_gimme)));
+ if (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)));
+ SvMULTI_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;
+{
+ SV **str1 = (SV **) a;
+ SV **str2 = (SV **) b;
+ I32 oldscopeix = scopestack_ix;
+ I32 result;
+ GvSV(firstgv) = *str1;
+ GvSV(secondgv) = *str2;
+ stack_sp = stack_base;
+ op = sortcop;
+ run();
+ if (stack_sp != stack_base + 1)
+ croak("Sort subroutine didn't return single value");
+ if (!SvNIOK(*stack_sp))
+ croak("Sort subroutine didn't return a numeric value");
+ result = SvIV(*stack_sp);
+ while (scopestack_ix > oldscopeix) {
+ LEAVE;
+ }
+ return result;
+}
+
+static int
+sortcmp(a, b)
+const void *a;
+const void *b;
+{
+ register SV *str1 = *(SV **) a;
+ register SV *str2 = *(SV **) b;
+ I32 retval;
+
+ if (SvCUR(str1) < SvCUR(str2)) {
+ /*SUPPRESS 560*/
+ if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str1)))
+ return retval;
+ else
+ return -1;
+ }
+ /*SUPPRESS 560*/
+ else if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str2)))
+ return retval;
+ else if (SvCUR(str1) == SvCUR(str2))
+ return 0;
+ else
+ return 1;
+}
+
+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 = GIMME;
+ I32 hasargs;
+ GV *gv;
+
+ ENTER;
+ SAVETMPS;
+
+ SAVEI32(debug);
+ debug = 0;
+ hasargs = 0;
+ gv = DBgv;
+ cv = GvCV(gv);
+ sp = stack_sp;
+ *++sp = Nullsv;
+
+ if (!cv)
+ DIE("No DB::DB routine defined");
+
+ if (CvDEPTH(cv) >= 1) /* don't do recursive DB::DB call */
+ return NORMAL;
+ push_return(op->op_next);
+ PUSHBLOCK(cx, CXt_SUB, sp - 1);
+ 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;
+ SV **svp;
+
+ if (op->op_targ)
+ svp = &curpad[op->op_targ]; /* "my" variable */
+ else
+ svp = &GvSV((GV*)POPs); /* symbol table variable */
+
+ ENTER;
+ SAVETMPS;
+ ENTER;
+
+ PUSHBLOCK(cx, CXt_LOOP, SP);
+ PUSHLOOP(cx, svp, MARK);
+ cx->blk_loop.iterary = stack;
+ cx->blk_loop.iterix = MARK - stack_base;
+
+ RETURN;
+}
+
+PP(pp_enterloop)
+{
+ dSP;
+ register CONTEXT *cx;
+ I32 gimme = GIMME;
+
+ ENTER;
+ SAVETMPS;
+ ENTER;
+
+ PUSHBLOCK(cx, CXt_LOOP, SP);
+ PUSHLOOP(cx, 0, SP);
+
+ RETURN;
+}
+
+PP(pp_leaveloop)
+{
+ dSP;
+ register CONTEXT *cx;
+ I32 gimme;
+ SV **newsp;
+ PMOP *newpm;
+ SV **mark;
+
+ POPBLOCK(cx,newpm);
+ mark = newsp;
+ POPLOOP(cx);
+ if (gimme == G_SCALAR) {
+ if (op->op_private & OPpLEAVE_VOID)
+ ;
+ else {
+ if (mark < SP)
+ *++newsp = sv_mortalcopy(*SP);
+ else
+ *++newsp = &sv_undef;
+ }
+ }
+ else {
+ while (mark < SP)
+ *++newsp = sv_mortalcopy(*++mark);
+ }
+ curpm = newpm; /* Don't pop $1 et al till now */
+ sp = newsp;
+ LEAVE;
+ LEAVE;
+
+ RETURN;
+}
+
+PP(pp_return)
+{
+ dSP; dMARK;
+ I32 cxix;
+ register CONTEXT *cx;
+ I32 gimme;
+ SV **newsp;
+ PMOP *newpm;
+ I32 optype = 0;
+
+ if (stack == sortstack) {
+ if (cxstack_ix == sortcxix || dopoptosub(cxstack_ix) < sortcxix) {
+ AvARRAY(stack)[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:
+ POPSUB(cx);
+ break;
+ case CXt_EVAL:
+ POPEVAL(cx);
+ break;
+ default:
+ DIE("panic: return");
+ break;
+ }
+
+ if (gimme == G_SCALAR) {
+ if (MARK < SP)
+ *++newsp = sv_mortalcopy(*SP);
+ else
+ *++newsp = &sv_undef;
+ if (optype == OP_REQUIRE && !SvTRUE(*newsp))
+ DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
+ }
+ else {
+ if (optype == OP_REQUIRE && MARK == SP)
+ DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
+ while (MARK < SP)
+ *++newsp = sv_mortalcopy(*++MARK);
+ }
+ curpm = newpm; /* Don't pop $1 et al till now */
+ stack_sp = newsp;
+
+ LEAVE;
+ return pop_return();
+}
+
+PP(pp_last)
+{
+ dSP;
+ I32 cxix;
+ register CONTEXT *cx;
+ I32 gimme;
+ I32 optype;
+ OP *nextop;
+ SV **newsp;
+ PMOP *newpm;
+ SV **mark = stack_base + cxstack[cxstack_ix].blk_oldsp;
+ /* XXX The sp is probably not right yet... */
+
+ 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:
+ POPLOOP(cx);
+ nextop = cx->blk_loop.last_op->op_next;
+ LEAVE;
+ break;
+ case CXt_EVAL:
+ POPEVAL(cx);
+ nextop = pop_return();
+ break;
+ case CXt_SUB:
+ POPSUB(cx);
+ nextop = pop_return();
+ break;
+ default:
+ DIE("panic: last");
+ break;
+ }
+
+ if (gimme == G_SCALAR) {
+ if (mark < SP)
+ *++newsp = sv_mortalcopy(*SP);
+ else
+ *++newsp = &sv_undef;
+ }
+ else {
+ while (mark < SP)
+ *++newsp = sv_mortalcopy(*++mark);
+ }
+ curpm = newpm; /* Don't pop $1 et al till now */
+ sp = newsp;
+
+ LEAVE;
+ RETURNOP(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(op,label,opstack)
+OP *op;
+char *label;
+OP **opstack;
+{
+ OP *kid;
+ OP **ops = opstack;
+
+ if (op->op_type == OP_LEAVE ||
+ op->op_type == OP_SCOPE ||
+ op->op_type == OP_LEAVELOOP ||
+ op->op_type == OP_LEAVETRY)
+ *ops++ = cUNOP->op_first;
+ *ops = 0;
+ if (op->op_flags & OPf_KIDS) {
+ /* First try all the kids at this level, since that's likeliest. */
+ for (kid = cUNOP->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 = cUNOP->op_first; kid; kid = kid->op_sibling) {
+ if (kid == lastgotoprobe)
+ continue;
+ if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
+ if (ops > opstack &&
+ (ops[-1]->op_type == OP_NEXTSTATE ||
+ ops[-1]->op_type == OP_DBSTATE))
+ *ops = kid;
+ else
+ *ops++ = kid;
+ }
+ if (op = dofindlabel(kid,label,ops))
+ return op;
+ }
+ }
+ *ops = 0;
+ return 0;
+}
+
+PP(pp_dump)
+{
+ return pp_goto(ARGS);
+ /*NOTREACHED*/
+}
+
+PP(pp_goto)
+{
+ dSP;
+ OP *retop = 0;
+ I32 ix;
+ register CONTEXT *cx;
+ OP *enterops[64];
+ 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;
+
+ /* 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;
+ Copy(AvARRAY(av), ++stack_sp, items, SV*);
+ stack_sp += items;
+ GvAV(defgv) = cx->blk_sub.savearray;
+ av_clear(av);
+ AvREAL_off(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)) {
+ while (sp > mark) {
+ sp[1] = sp[0];
+ sp--;
+ }
+ items = (*(I32(*)_((int,int,int)))CvXSUB(cv))(
+ CvXSUBANY(cv).any_i32,
+ mark - stack_base + 1,
+ items);
+ sp = stack_base + items;
+ }
+ else {
+ (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)
+ warn("Deep recursion on subroutine \"%s\"",
+ GvENAME(CvGV(cv)));
+ if (CvDEPTH(cv) > AvFILL(padlist)) {
+ AV *newpad = newAV();
+ I32 ix = AvFILL((AV*)svp[1]);
+ svp = AvARRAY(svp[0]);
+ while (ix > 0) {
+ if (svp[ix] != &sv_undef) {
+ char *name = SvPVX(svp[ix]); /* XXX */
+ 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);
+ }
+ }
+ SAVESPTR(curpad);
+ curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
+ if (cx->blk_sub.hasargs) {
+ AV* av = (AV*)curpad[0];
+ SV** ary;
+
+ cx->blk_sub.savearray = GvAV(defgv);
+ cx->blk_sub.argarray = av;
+ GvAV(defgv) = cx->blk_sub.argarray;
+ ++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++;
+ }
+ }
+ 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_SUB:
+ gotoprobe = CvROOT(cx->blk_sub.cv);
+ break;
+ 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;
+ default:
+ if (ix)
+ DIE("panic: goto");
+ else
+ gotoprobe = main_root;
+ break;
+ }
+ retop = dofindlabel(gotoprobe, label, enterops);
+ 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) {
+ OP *oldop = op;
+ for (ix = 0 + (gotoprobe == main_root); enterops[ix]; ix++) {
+ op = enterops[ix];
+ (*op->op_ppaddr)();
+ }
+ op = oldop;
+ }
+ }
+
+ if (do_dump) {
+ restartop = retop;
+ do_undump = TRUE;
+
+ my_unexec();
+
+ restartop = 0; /* hmm, must be GNU unexec().. */
+ do_undump = FALSE;
+ }
+
+ RETURNOP(retop);
+}
+
+PP(pp_exit)
+{
+ dSP;
+ I32 anum;
+
+ if (MAXARG < 1)
+ anum = 0;
+ else
+ anum = SvIVx(POPs);
+ 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 *
+doeval(gimme)
+int gimme;
+{
+ dSP;
+ OP *saveop = op;
+ HV *newstash;
+
+ in_eval = 1;
+
+ /* set up a scratch pad */
+
+ SAVEINT(padix);
+ SAVESPTR(curpad);
+ SAVESPTR(comppad);
+ SAVESPTR(comppad_name);
+ SAVEINT(comppad_name_fill);
+ SAVEINT(min_intro_pending);
+ SAVEINT(max_intro_pending);
+ comppad = newAV();
+ comppad_name = newAV();
+ comppad_name_fill = 0;
+ min_intro_pending = 0;
+ av_push(comppad, Nullsv);
+ curpad = AvARRAY(comppad);
+ padix = 0;
+
+ /* 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;
+ rs = "\n";
+ rslen = 1;
+ rschar = '\n';
+ rspara = 0;
+ sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
+ 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;
+ }
+ POPBLOCK(cx,curpm);
+ POPEVAL(cx);
+ pop_return();
+ lex_end();
+ LEAVE;
+ if (optype == OP_REQUIRE)
+ DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
+ rs = nrs;
+ rslen = nrslen;
+ rschar = nrschar;
+ rspara = (nrslen == 2);
+ RETPUSHUNDEF;
+ }
+ rs = nrs;
+ rslen = nrslen;
+ rschar = nrschar;
+ rspara = (nrslen == 2);
+ compiling.cop_line = 0;
+ SAVEFREESV(comppad);
+ SAVEFREESV(comppad_name);
+ SAVEFREEOP(eval_root);
+ if (gimme & G_ARRAY)
+ list(eval_root);
+ else
+ scalar(eval_root);
+
+ DEBUG_x(dump_eval());
+
+ /* compiled okay, so do it */
+
+ RETURNOP(eval_start);
+}
+
+PP(pp_require)
+{
+ dSP;
+ register CONTEXT *cx;
+ SV *sv;
+ char *name;
+ char *tmpname;
+ SV** svp;
+ I32 gimme = G_SCALAR;
+ FILE *tryrsfp = 0;
+
+ sv = POPs;
+ if (SvNIOK(sv) && !SvPOKp(sv)) {
+ if (atof(patchlevel) + 0.000999 < SvNV(sv))
+ DIE("Perl %3.3f required--this is only version %s, stopped",
+ SvNV(sv),patchlevel);
+ RETPUSHYES;
+ }
+ name = SvPV(sv, na);
+ if (!*name)
+ DIE("Null filename used");
+ if (op->op_type == OP_REQUIRE &&
+ (svp = hv_fetch(GvHVn(incgv), name, SvCUR(sv), 0)) &&
+ *svp != &sv_undef)
+ RETPUSHYES;
+
+ /* prepare to compile file */
+
+ tmpname = savepv(name);
+ if (*tmpname == '/' ||
+ (*tmpname == '.' &&
+ (tmpname[1] == '/' ||
+ (tmpname[1] == '.' && tmpname[2] == '/'))))
+ {
+ tryrsfp = fopen(tmpname,"r");
+ }
+ else {
+ AV *ar = GvAVn(incgv);
+ I32 i;
+
+ for (i = 0; i <= AvFILL(ar); i++) {
+ (void)sprintf(buf, "%s/%s",
+ SvPVx(*av_fetch(ar, i, TRUE), na), name);
+ tryrsfp = fopen(buf, "r");
+ if (tryrsfp) {
+ char *s = buf;
+
+ if (*s == '.' && s[1] == '/')
+ s += 2;
+ Safefree(tmpname);
+ tmpname = savepv(s);
+ break;
+ }
+ }
+ }
+ SAVESPTR(compiling.cop_filegv);
+ compiling.cop_filegv = gv_fetchfile(tmpname);
+ Safefree(tmpname);
+ tmpname = Nullch;
+ if (!tryrsfp) {
+ if (op->op_type == OP_REQUIRE) {
+ sprintf(tokenbuf,"Can't locate %s in @INC", name);
+ if (instr(tokenbuf,".h "))
+ strcat(tokenbuf," (change .h to .ph maybe?)");
+ if (instr(tokenbuf,".ph "))
+ strcat(tokenbuf," (did you run h2ph?)");
+ DIE("%s",tokenbuf);
+ }
+
+ 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)));
+ 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;
+ return doeval(G_SCALAR);
+}
+
+PP(pp_dofile)
+{
+ return pp_require(ARGS);
+}
+
+PP(pp_entereval)
+{
+ dSP;
+ register CONTEXT *cx;
+ dPOPss;
+ I32 gimme = GIMME;
+ char tmpbuf[32];
+ STRLEN len;
+
+ if (!SvPV(sv,len) || !len)
+ RETPUSHUNDEF;
+
+ ENTER;
+ SAVETMPS;
+ lex_start(sv);
+
+ /* switch to eval mode */
+
+ sprintf(tmpbuf, "_<(eval %d)", ++evalseq);
+ compiling.cop_filegv = gv_fetchfile(tmpbuf+2);
+ compiling.cop_line = 1;
+ SAVEDELETE(defstash, savepv(tmpbuf), strlen(tmpbuf));
+ 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 && curstash != debstash)
+ save_lines(GvAV(compiling.cop_filegv), linestr);
+ PUTBACK;
+ return doeval(gimme);
+}
+
+PP(pp_leaveeval)
+{
+ dSP;
+ register SV **mark;
+ SV **newsp;
+ PMOP *newpm;
+ I32 gimme;
+ register CONTEXT *cx;
+ OP *retop;
+ I32 optype;
+
+ POPBLOCK(cx,newpm);
+ POPEVAL(cx);
+ retop = pop_return();
+
+ if (gimme == G_SCALAR) {
+ if (op->op_private & OPpLEAVE_VOID)
+ MARK = newsp;
+ else {
+ 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;
+ }
+ }
+ SP = MARK;
+ }
+ else {
+ for (mark = newsp + 1; mark <= SP; mark++)
+ if (!(SvFLAGS(TOPs) & SVs_TEMP))
+ *mark = sv_mortalcopy(*mark);
+ /* in case LEAVE wipes old return values */
+ }
+ curpm = newpm; /* Don't pop $1 et al till now */
+
+ if (optype != OP_ENTEREVAL) {
+ char *name = cx->blk_eval.old_name;
+
+ if (!(gimme == G_SCALAR ? SvTRUE(*sp) : sp > newsp)) {
+ /* Unassume the success we assumed earlier. */
+ (void)hv_delete(GvHVn(incgv), name, strlen(name));
+
+ if (optype == OP_REQUIRE)
+ retop = die("%s did not return a true value", name);
+ }
+ }
+
+ lex_end();
+ LEAVE;
+ sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
+
+ RETURNOP(retop);
+}
+
+#ifdef NOTYET
+PP(pp_evalonce)
+{
+ dSP;
+ SP = do_eval(st[1], OP_EVAL, curcop->cop_stash, TRUE,
+ GIMME, arglast);
+ if (eval_root) {
+ SvREFCNT_dec(cSVOP->op_sv);
+ op[1].arg_ptr.arg_cmd = eval_root;
+ op[1].op_type = (A_CMD|A_DONT);
+ op[0].op_type = OP_TRY;
+ }
+ RETURN;
+}
+#endif
+
+PP(pp_entertry)
+{
+ dSP;
+ register CONTEXT *cx;
+ I32 gimme = GIMME;
+
+ 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(gv_fetchpv("@",TRUE, SVt_PV)),"");
+ RETURN;
+}
+
+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();
+
+ if (gimme == G_SCALAR) {
+ if (op->op_private & OPpLEAVE_VOID)
+ MARK = newsp;
+ else {
+ 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 {
+ for (mark = newsp + 1; mark <= SP; mark++)
+ if (!(SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)))
+ *mark = sv_mortalcopy(*mark);
+ /* in case LEAVE wipes old return values */
+ }
+ curpm = newpm; /* Don't pop $1 et al till now */
+
+ LEAVE;
+ sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
+ 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;
+
+ New(804, fops, (send - s)*3+2, 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;
+ postspace = FALSE;
+ }
+ *fpc++ = FF_LITERAL;
+ *fpc++ = arg;
+ }
+ 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);
+ SvCOMPILED_on(sv);
+}
+
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