3 * Copyright (c) 1996 Malcolm Beattie
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
10 #define PERL_NO_GET_CONTEXT
16 typedef PerlIO * InputStream;
18 typedef FILE * InputStream;
22 static char *svclassnames[] = {
57 static char *opclassnames[] = {
73 #define MY_CXT_KEY "B::_guts" XS_VERSION
76 int x_walkoptree_debug; /* Flag for walkoptree debug hook */
77 SV * x_specialsv_list[7];
82 #define walkoptree_debug (MY_CXT.x_walkoptree_debug)
83 #define specialsv_list (MY_CXT.x_specialsv_list)
86 cc_opclass(pTHX_ OP *o)
92 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
94 if (o->op_type == OP_SASSIGN)
95 return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
98 if (o->op_type == OP_GV || o->op_type == OP_GVSV ||
99 o->op_type == OP_AELEMFAST || o->op_type == OP_RCATLINE)
103 switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
128 case OA_PVOP_OR_SVOP:
130 * Character translations (tr///) are usually a PVOP, keeping a
131 * pointer to a table of shorts used to look up translations.
132 * Under utf8, however, a simple table isn't practical; instead,
133 * the OP is an SVOP, and the SV is a reference to a swash
134 * (i.e., an RV pointing to an HV).
136 return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
137 ? OPc_SVOP : OPc_PVOP;
145 case OA_BASEOP_OR_UNOP:
147 * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
148 * whether parens were seen. perly.y uses OPf_SPECIAL to
149 * signal whether a BASEOP had empty parens or none.
150 * Some other UNOPs are created later, though, so the best
151 * test is OPf_KIDS, which is set in newUNOP.
153 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
157 * The file stat OPs are created via UNI(OP_foo) in toke.c but use
158 * the OPf_REF flag to distinguish between OP types instead of the
159 * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
160 * return OPc_UNOP so that walkoptree can find our children. If
161 * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
162 * (no argument to the operator) it's an OP; with OPf_REF set it's
163 * an SVOP (and op_sv is the GV for the filehandle argument).
165 return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
167 (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP);
169 (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP);
173 * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
174 * label was omitted (in which case it's a BASEOP) or else a term was
175 * seen. In this last case, all except goto are definitely PVOP but
176 * goto is either a PVOP (with an ordinary constant label), an UNOP
177 * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
178 * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
181 if (o->op_flags & OPf_STACKED)
183 else if (o->op_flags & OPf_SPECIAL)
188 warn("can't determine class of operator %s, assuming BASEOP\n",
189 PL_op_name[o->op_type]);
194 cc_opclassname(pTHX_ OP *o)
196 return opclassnames[cc_opclass(aTHX_ o)];
200 make_sv_object(pTHX_ SV *arg, SV *sv)
206 for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
207 if (sv == specialsv_list[iv]) {
213 type = svclassnames[SvTYPE(sv)];
216 sv_setiv(newSVrv(arg, type), iv);
221 make_mg_object(pTHX_ SV *arg, MAGIC *mg)
223 sv_setiv(newSVrv(arg, "B::MAGIC"), PTR2IV(mg));
228 cstring(pTHX_ SV *sv, bool perlstyle)
230 SV *sstr = newSVpvn("", 0);
233 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
236 sv_setpvn(sstr, "0", 1);
237 else if (perlstyle && SvUTF8(sv))
239 SV *tmpsv = sv_newmortal(); /* Temporary SV to feed sv_uni_display */
241 s = sv_uni_display(tmpsv, sv, 8*len, UNI_DISPLAY_QQ);
246 sv_catpv(sstr, "\\\"");
248 sv_catpv(sstr, "\\$");
250 sv_catpv(sstr, "\\@");
253 if (strchr("nrftax\\",*(s+1)))
254 sv_catpvn(sstr, s++, 2);
256 sv_catpv(sstr, "\\\\");
258 else /* should always be printable */
259 sv_catpvn(sstr, s, 1);
262 sv_catpv(sstr, "\"");
269 sv_catpv(sstr, "\"");
270 for (; len; len--, s++)
272 /* At least try a little for readability */
274 sv_catpv(sstr, "\\\"");
276 sv_catpv(sstr, "\\\\");
277 /* trigraphs - bleagh */
278 else if (!perlstyle && *s == '?' && len>=3 && s[1] == '?')
280 sprintf(escbuff, "\\%03o", '?');
281 sv_catpv(sstr, escbuff);
283 else if (perlstyle && *s == '$')
284 sv_catpv(sstr, "\\$");
285 else if (perlstyle && *s == '@')
286 sv_catpv(sstr, "\\@");
288 else if (isPRINT(*s))
290 else if (*s >= ' ' && *s < 127)
292 sv_catpvn(sstr, s, 1);
294 sv_catpv(sstr, "\\n");
296 sv_catpv(sstr, "\\r");
298 sv_catpv(sstr, "\\t");
300 sv_catpv(sstr, "\\a");
302 sv_catpv(sstr, "\\b");
304 sv_catpv(sstr, "\\f");
305 else if (!perlstyle && *s == '\v')
306 sv_catpv(sstr, "\\v");
309 /* Don't want promotion of a signed -1 char in sprintf args */
310 unsigned char c = (unsigned char) *s;
311 sprintf(escbuff, "\\%03o", c);
312 sv_catpv(sstr, escbuff);
314 /* XXX Add line breaks if string is long */
316 sv_catpv(sstr, "\"");
324 SV *sstr = newSVpvn("'", 1);
326 char *s = SvPV(sv, n_a);
329 sv_catpv(sstr, "\\'");
331 sv_catpv(sstr, "\\\\");
333 else if (isPRINT(*s))
335 else if (*s >= ' ' && *s < 127)
337 sv_catpvn(sstr, s, 1);
339 sv_catpv(sstr, "\\n");
341 sv_catpv(sstr, "\\r");
343 sv_catpv(sstr, "\\t");
345 sv_catpv(sstr, "\\a");
347 sv_catpv(sstr, "\\b");
349 sv_catpv(sstr, "\\f");
351 sv_catpv(sstr, "\\v");
354 /* no trigraph support */
355 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
356 /* Don't want promotion of a signed -1 char in sprintf args */
357 unsigned char c = (unsigned char) *s;
358 sprintf(escbuff, "\\%03o", c);
359 sv_catpv(sstr, escbuff);
366 walkoptree(pTHX_ SV *opsv, char *method)
373 croak("opsv is not a reference");
374 opsv = sv_mortalcopy(opsv);
375 o = INT2PTR(OP*,SvIV((SV*)SvRV(opsv)));
376 if (walkoptree_debug) {
380 perl_call_method("walkoptree_debug", G_DISCARD);
385 perl_call_method(method, G_DISCARD);
386 if (o && (o->op_flags & OPf_KIDS)) {
387 for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
388 /* Use the same opsv. Rely on methods not to mess it up. */
389 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), PTR2IV(kid));
390 walkoptree(aTHX_ opsv, method);
393 if (o && (cc_opclass(aTHX_ o) == OPc_PMOP)
394 && (kid = cPMOPo->op_pmreplroot))
396 sv_setiv(newSVrv(opsv, opclassnames[OPc_PMOP]), PTR2IV(kid));
397 walkoptree(aTHX_ opsv, method);
402 typedef UNOP *B__UNOP;
403 typedef BINOP *B__BINOP;
404 typedef LOGOP *B__LOGOP;
405 typedef LISTOP *B__LISTOP;
406 typedef PMOP *B__PMOP;
407 typedef SVOP *B__SVOP;
408 typedef PADOP *B__PADOP;
409 typedef PVOP *B__PVOP;
410 typedef LOOP *B__LOOP;
427 typedef MAGIC *B__MAGIC;
429 MODULE = B PACKAGE = B PREFIX = B_
435 HV *stash = gv_stashpvn("B", 1, TRUE);
436 AV *export_ok = perl_get_av("B::EXPORT_OK",TRUE);
438 specialsv_list[0] = Nullsv;
439 specialsv_list[1] = &PL_sv_undef;
440 specialsv_list[2] = &PL_sv_yes;
441 specialsv_list[3] = &PL_sv_no;
442 specialsv_list[4] = pWARN_ALL;
443 specialsv_list[5] = pWARN_NONE;
444 specialsv_list[6] = pWARN_STD;
448 #define B_main_cv() PL_main_cv
449 #define B_init_av() PL_initav
450 #define B_check_av() PL_checkav_save
451 #define B_begin_av() PL_beginav_save
452 #define B_end_av() PL_endav
453 #define B_main_root() PL_main_root
454 #define B_main_start() PL_main_start
455 #define B_amagic_generation() PL_amagic_generation
456 #define B_comppadlist() (PL_main_cv ? CvPADLIST(PL_main_cv) : CvPADLIST(PL_compcv))
457 #define B_sv_undef() &PL_sv_undef
458 #define B_sv_yes() &PL_sv_yes
459 #define B_sv_no() &PL_sv_no
461 #define B_regex_padav() PL_regex_padav
493 B_amagic_generation()
507 MODULE = B PACKAGE = B
511 walkoptree(opsv, method)
515 walkoptree(aTHX_ opsv, method);
518 walkoptree_debug(...)
521 RETVAL = walkoptree_debug;
522 if (items > 0 && SvTRUE(ST(1)))
523 walkoptree_debug = 1;
527 #define address(sv) PTR2IV(sv)
538 croak("argument is not a reference");
539 RETVAL = (SV*)SvRV(sv);
550 ST(0) = sv_newmortal();
551 if (strncmp(name,"pp_",3) == 0)
553 for (i = 0; i < PL_maxo; i++)
555 if (strcmp(name, PL_op_name[i]) == 0)
561 sv_setiv(ST(0),result);
568 ST(0) = sv_newmortal();
569 if (opnum >= 0 && opnum < PL_maxo) {
570 sv_setpvn(ST(0), "pp_", 3);
571 sv_catpv(ST(0), PL_op_name[opnum]);
581 char hexhash[19]; /* must fit "0xffffffffffffffff" plus trailing \0 */
583 PERL_HASH(hash, s, len);
584 sprintf(hexhash, "0x%"UVxf, (UV)hash);
585 ST(0) = sv_2mortal(newSVpv(hexhash, 0));
587 #define cast_I32(foo) (I32)foo
606 RETVAL = cstring(aTHX_ sv, 0);
614 RETVAL = cstring(aTHX_ sv, 1);
622 RETVAL = cchar(aTHX_ sv);
631 #define OP_next(o) o->op_next
632 #define OP_sibling(o) o->op_sibling
633 #define OP_desc(o) PL_op_desc[o->op_type]
634 #define OP_targ(o) o->op_targ
635 #define OP_type(o) o->op_type
636 #define OP_seq(o) o->op_seq
637 #define OP_flags(o) o->op_flags
638 #define OP_private(o) o->op_private
640 MODULE = B PACKAGE = B::OP PREFIX = OP_
654 RETVAL = PL_op_name[o->op_type];
664 SV *sv = sv_newmortal();
666 sv_setpvn(sv, "PL_ppaddr[OP_", 13);
667 sv_catpv(sv, PL_op_name[o->op_type]);
668 for (i=13; (STRLEN)i < SvCUR(sv); ++i)
669 SvPVX(sv)[i] = toUPPER(SvPVX(sv)[i]);
697 #define UNOP_first(o) o->op_first
699 MODULE = B PACKAGE = B::UNOP PREFIX = UNOP_
705 #define BINOP_last(o) o->op_last
707 MODULE = B PACKAGE = B::BINOP PREFIX = BINOP_
713 #define LOGOP_other(o) o->op_other
715 MODULE = B PACKAGE = B::LOGOP PREFIX = LOGOP_
721 MODULE = B PACKAGE = B::LISTOP PREFIX = LISTOP_
730 for (kid = o->op_first; kid; kid = kid->op_sibling)
736 #define PMOP_pmreplroot(o) o->op_pmreplroot
737 #define PMOP_pmreplstart(o) o->op_pmreplstart
738 #define PMOP_pmnext(o) o->op_pmnext
739 #define PMOP_pmregexp(o) PM_GETRE(o)
741 #define PMOP_pmoffset(o) o->op_pmoffset
743 #define PMOP_pmflags(o) o->op_pmflags
744 #define PMOP_pmpermflags(o) o->op_pmpermflags
745 #define PMOP_pmdynflags(o) o->op_pmdynflags
747 MODULE = B PACKAGE = B::PMOP PREFIX = PMOP_
754 ST(0) = sv_newmortal();
755 root = o->op_pmreplroot;
756 /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
757 if (o->op_type == OP_PUSHRE) {
759 sv_setiv(ST(0), INT2PTR(PADOFFSET,root) );
761 sv_setiv(newSVrv(ST(0), root ?
762 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
767 sv_setiv(newSVrv(ST(0), cc_opclassname(aTHX_ root)), PTR2IV(root));
801 REGEXP * rx = NO_INIT
803 ST(0) = sv_newmortal();
806 sv_setpvn(ST(0), rx->precomp, rx->prelen);
808 #define SVOP_sv(o) cSVOPo->op_sv
809 #define SVOP_gv(o) ((GV*)cSVOPo->op_sv)
811 MODULE = B PACKAGE = B::SVOP PREFIX = SVOP_
821 #define PADOP_padix(o) o->op_padix
822 #define PADOP_sv(o) (o->op_padix ? PAD_SVl(o->op_padix) : Nullsv)
823 #define PADOP_gv(o) ((o->op_padix \
824 && SvTYPE(PAD_SVl(o->op_padix)) == SVt_PVGV) \
825 ? (GV*)PAD_SVl(o->op_padix) : Nullgv)
827 MODULE = B PACKAGE = B::PADOP PREFIX = PADOP_
841 MODULE = B PACKAGE = B::PVOP PREFIX = PVOP_
848 * OP_TRANS uses op_pv to point to a table of 256 or >=258 shorts
849 * whereas other PVOPs point to a null terminated string.
851 if (o->op_type == OP_TRANS &&
852 (o->op_private & OPpTRANS_COMPLEMENT) &&
853 !(o->op_private & OPpTRANS_DELETE))
855 short* tbl = (short*)o->op_pv;
856 short entries = 257 + tbl[256];
857 ST(0) = sv_2mortal(newSVpv(o->op_pv, entries * sizeof(short)));
859 else if (o->op_type == OP_TRANS) {
860 ST(0) = sv_2mortal(newSVpv(o->op_pv, 256 * sizeof(short)));
863 ST(0) = sv_2mortal(newSVpv(o->op_pv, 0));
865 #define LOOP_redoop(o) o->op_redoop
866 #define LOOP_nextop(o) o->op_nextop
867 #define LOOP_lastop(o) o->op_lastop
869 MODULE = B PACKAGE = B::LOOP PREFIX = LOOP_
884 #define COP_label(o) o->cop_label
885 #define COP_stashpv(o) CopSTASHPV(o)
886 #define COP_stash(o) CopSTASH(o)
887 #define COP_file(o) CopFILE(o)
888 #define COP_cop_seq(o) o->cop_seq
889 #define COP_arybase(o) o->cop_arybase
890 #define COP_line(o) CopLINE(o)
891 #define COP_warnings(o) o->cop_warnings
893 MODULE = B PACKAGE = B::COP PREFIX = COP_
927 MODULE = B PACKAGE = B::SV PREFIX = Sv
937 MODULE = B PACKAGE = B::IV PREFIX = Sv
952 MODULE = B PACKAGE = B::IV
954 #define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))
964 if (sizeof(IV) == 8) {
968 * The following way of spelling 32 is to stop compilers on
969 * 32-bit architectures from moaning about the shift count
970 * being >= the width of the type. Such architectures don't
971 * reach this code anyway (unless sizeof(IV) > 8 but then
972 * everything else breaks too so I'm not fussed at the moment).
975 wp[0] = htonl(((UV)iv) >> (sizeof(UV)*4));
977 wp[0] = htonl(((U32)iv) >> (sizeof(UV)*4));
979 wp[1] = htonl(iv & 0xffffffff);
980 ST(0) = sv_2mortal(newSVpvn((char *)wp, 8));
982 U32 w = htonl((U32)SvIVX(sv));
983 ST(0) = sv_2mortal(newSVpvn((char *)&w, 4));
986 MODULE = B PACKAGE = B::NV PREFIX = Sv
996 MODULE = B PACKAGE = B::RV PREFIX = Sv
1002 MODULE = B PACKAGE = B::PV PREFIX = Sv
1016 croak( "argument is not SvROK" );
1025 ST(0) = sv_newmortal();
1027 sv_setpvn(ST(0), SvPVX(sv), SvCUR(sv));
1028 SvFLAGS(ST(0)) |= SvUTF8(sv);
1031 /* XXX for backward compatibility, but should fail */
1032 /* croak( "argument is not SvPOK" ); */
1033 sv_setpvn(ST(0), NULL, 0);
1044 MODULE = B PACKAGE = B::PVMG PREFIX = Sv
1049 MAGIC * mg = NO_INIT
1051 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
1052 XPUSHs(make_mg_object(aTHX_ sv_newmortal(), mg));
1054 MODULE = B PACKAGE = B::PVMG
1060 #define MgMOREMAGIC(mg) mg->mg_moremagic
1061 #define MgPRIVATE(mg) mg->mg_private
1062 #define MgTYPE(mg) mg->mg_type
1063 #define MgFLAGS(mg) mg->mg_flags
1064 #define MgOBJ(mg) mg->mg_obj
1065 #define MgLENGTH(mg) mg->mg_len
1066 #define MgREGEX(mg) PTR2IV(mg->mg_obj)
1068 MODULE = B PACKAGE = B::MAGIC PREFIX = Mg
1074 if( MgMOREMAGIC(mg) ) {
1075 RETVAL = MgMOREMAGIC(mg);
1099 if( mg->mg_type != 'r' ) {
1103 croak( "OBJ is not meaningful on r-magic" );
1112 if( mg->mg_type == 'r' ) {
1113 RETVAL = MgREGEX(mg);
1116 croak( "REGEX is only meaningful on r-magic" );
1125 if (mg->mg_type == 'r') {
1126 REGEXP* rx = (REGEXP*)mg->mg_obj;
1128 RETVAL = newSVpvn( rx->precomp, rx->prelen );
1131 croak( "precomp is only meaningful on r-magic" );
1144 ST(0) = sv_newmortal();
1146 if (mg->mg_len >= 0){
1147 sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
1149 if (mg->mg_len == HEf_SVKEY)
1150 sv_setsv(ST(0),newRV((SV*)mg->mg_ptr));
1154 MODULE = B PACKAGE = B::PVLV PREFIX = Lv
1172 MODULE = B PACKAGE = B::BM PREFIX = Bm
1189 STRLEN len = NO_INIT
1190 char * str = NO_INIT
1192 str = SvPV(sv, len);
1193 /* Boyer-Moore table is just after string and its safety-margin \0 */
1194 ST(0) = sv_2mortal(newSVpvn(str + len + 1, 256));
1196 MODULE = B PACKAGE = B::GV PREFIX = Gv
1202 ST(0) = sv_2mortal(newSVpvn(GvNAME(gv), GvNAMELEN(gv)));
1208 RETVAL = GvGP(gv) == Null(GP*);
1260 MODULE = B PACKAGE = B::GV
1270 MODULE = B PACKAGE = B::IO PREFIX = Io
1323 if( strEQ( name, "stdin" ) ) {
1324 handle = PerlIO_stdin();
1326 else if( strEQ( name, "stdout" ) ) {
1327 handle = PerlIO_stdout();
1329 else if( strEQ( name, "stderr" ) ) {
1330 handle = PerlIO_stderr();
1333 croak( "Invalid value '%s'", name );
1335 RETVAL = handle == IoIFP(io);
1339 MODULE = B PACKAGE = B::IO
1349 MODULE = B PACKAGE = B::AV PREFIX = Av
1359 #define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off
1369 if (AvFILL(av) >= 0) {
1370 SV **svp = AvARRAY(av);
1372 for (i = 0; i <= AvFILL(av); i++)
1373 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), svp[i]));
1376 MODULE = B PACKAGE = B::AV
1382 MODULE = B PACKAGE = B::CV PREFIX = Cv
1424 ST(0) = sv_2mortal(newSViv(PTR2IV(CvXSUB(cv))));
1431 ST(0) = CvCONST(cv) ?
1432 make_sv_object(aTHX_ sv_newmortal(),CvXSUBANY(cv).any_ptr) :
1433 sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));
1435 MODULE = B PACKAGE = B::CV
1441 MODULE = B PACKAGE = B::CV PREFIX = cv_
1448 MODULE = B PACKAGE = B::HV PREFIX = Hv
1478 if (HvKEYS(hv) > 0) {
1482 (void)hv_iterinit(hv);
1483 EXTEND(sp, HvKEYS(hv) * 2);
1484 while ((sv = hv_iternextsv(hv, &key, &len))) {
1485 PUSHs(newSVpvn(key, len));
1486 PUSHs(make_sv_object(aTHX_ sv_newmortal(), sv));