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[] = {
56 static char *opclassnames[] = {
71 static size_t opsizes[] = {
86 #define MY_CXT_KEY "B::_guts" XS_VERSION
89 int x_walkoptree_debug; /* Flag for walkoptree debug hook */
90 SV * x_specialsv_list[7];
95 #define walkoptree_debug (MY_CXT.x_walkoptree_debug)
96 #define specialsv_list (MY_CXT.x_specialsv_list)
99 cc_opclass(pTHX_ OP *o)
105 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
107 if (o->op_type == OP_SASSIGN)
108 return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
111 if (o->op_type == OP_GV || o->op_type == OP_GVSV ||
112 o->op_type == OP_AELEMFAST || o->op_type == OP_RCATLINE)
116 switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
141 case OA_PVOP_OR_SVOP:
143 * Character translations (tr///) are usually a PVOP, keeping a
144 * pointer to a table of shorts used to look up translations.
145 * Under utf8, however, a simple table isn't practical; instead,
146 * the OP is an SVOP, and the SV is a reference to a swash
147 * (i.e., an RV pointing to an HV).
149 return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
150 ? OPc_SVOP : OPc_PVOP;
158 case OA_BASEOP_OR_UNOP:
160 * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
161 * whether parens were seen. perly.y uses OPf_SPECIAL to
162 * signal whether a BASEOP had empty parens or none.
163 * Some other UNOPs are created later, though, so the best
164 * test is OPf_KIDS, which is set in newUNOP.
166 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
170 * The file stat OPs are created via UNI(OP_foo) in toke.c but use
171 * the OPf_REF flag to distinguish between OP types instead of the
172 * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
173 * return OPc_UNOP so that walkoptree can find our children. If
174 * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
175 * (no argument to the operator) it's an OP; with OPf_REF set it's
176 * an SVOP (and op_sv is the GV for the filehandle argument).
178 return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
180 (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP);
182 (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP);
186 * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
187 * label was omitted (in which case it's a BASEOP) or else a term was
188 * seen. In this last case, all except goto are definitely PVOP but
189 * goto is either a PVOP (with an ordinary constant label), an UNOP
190 * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
191 * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
194 if (o->op_flags & OPf_STACKED)
196 else if (o->op_flags & OPf_SPECIAL)
201 warn("can't determine class of operator %s, assuming BASEOP\n",
202 PL_op_name[o->op_type]);
207 cc_opclassname(pTHX_ OP *o)
209 return opclassnames[cc_opclass(aTHX_ o)];
213 make_sv_object(pTHX_ SV *arg, SV *sv)
219 for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
220 if (sv == specialsv_list[iv]) {
226 type = svclassnames[SvTYPE(sv)];
229 sv_setiv(newSVrv(arg, type), iv);
234 make_mg_object(pTHX_ SV *arg, MAGIC *mg)
236 sv_setiv(newSVrv(arg, "B::MAGIC"), PTR2IV(mg));
241 cstring(pTHX_ SV *sv, bool perlstyle)
243 SV *sstr = newSVpvn("", 0);
246 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
249 sv_setpvn(sstr, "0", 1);
250 else if (perlstyle && SvUTF8(sv))
252 SV *tmpsv = sv_newmortal(); /* Temporary SV to feed sv_uni_display */
254 s = sv_uni_display(tmpsv, sv, 8*len, UNI_DISPLAY_QQ);
259 sv_catpv(sstr, "\\\"");
261 sv_catpv(sstr, "\\$");
263 sv_catpv(sstr, "\\@");
266 if (strchr("nrftax\\",*(s+1)))
267 sv_catpvn(sstr, s++, 2);
269 sv_catpv(sstr, "\\\\");
271 else /* should always be printable */
272 sv_catpvn(sstr, s, 1);
275 sv_catpv(sstr, "\"");
282 sv_catpv(sstr, "\"");
283 for (; len; len--, s++)
285 /* At least try a little for readability */
287 sv_catpv(sstr, "\\\"");
289 sv_catpv(sstr, "\\\\");
290 /* trigraphs - bleagh */
291 else if (!perlstyle && *s == '?' && len>=3 && s[1] == '?')
293 sprintf(escbuff, "\\%03o", '?');
294 sv_catpv(sstr, escbuff);
296 else if (perlstyle && *s == '$')
297 sv_catpv(sstr, "\\$");
298 else if (perlstyle && *s == '@')
299 sv_catpv(sstr, "\\@");
301 else if (isPRINT(*s))
303 else if (*s >= ' ' && *s < 127)
305 sv_catpvn(sstr, s, 1);
307 sv_catpv(sstr, "\\n");
309 sv_catpv(sstr, "\\r");
311 sv_catpv(sstr, "\\t");
313 sv_catpv(sstr, "\\a");
315 sv_catpv(sstr, "\\b");
317 sv_catpv(sstr, "\\f");
318 else if (!perlstyle && *s == '\v')
319 sv_catpv(sstr, "\\v");
322 /* Don't want promotion of a signed -1 char in sprintf args */
323 unsigned char c = (unsigned char) *s;
324 sprintf(escbuff, "\\%03o", c);
325 sv_catpv(sstr, escbuff);
327 /* XXX Add line breaks if string is long */
329 sv_catpv(sstr, "\"");
337 SV *sstr = newSVpvn("'", 1);
339 char *s = SvPV(sv, n_a);
342 sv_catpv(sstr, "\\'");
344 sv_catpv(sstr, "\\\\");
346 else if (isPRINT(*s))
348 else if (*s >= ' ' && *s < 127)
350 sv_catpvn(sstr, s, 1);
352 sv_catpv(sstr, "\\n");
354 sv_catpv(sstr, "\\r");
356 sv_catpv(sstr, "\\t");
358 sv_catpv(sstr, "\\a");
360 sv_catpv(sstr, "\\b");
362 sv_catpv(sstr, "\\f");
364 sv_catpv(sstr, "\\v");
367 /* no trigraph support */
368 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
369 /* Don't want promotion of a signed -1 char in sprintf args */
370 unsigned char c = (unsigned char) *s;
371 sprintf(escbuff, "\\%03o", c);
372 sv_catpv(sstr, escbuff);
379 walkoptree(pTHX_ SV *opsv, char *method)
386 croak("opsv is not a reference");
387 opsv = sv_mortalcopy(opsv);
388 o = INT2PTR(OP*,SvIV((SV*)SvRV(opsv)));
389 if (walkoptree_debug) {
393 perl_call_method("walkoptree_debug", G_DISCARD);
398 perl_call_method(method, G_DISCARD);
399 if (o && (o->op_flags & OPf_KIDS)) {
400 for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
401 /* Use the same opsv. Rely on methods not to mess it up. */
402 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), PTR2IV(kid));
403 walkoptree(aTHX_ opsv, method);
406 if (o && (cc_opclass(aTHX_ o) == OPc_PMOP)
407 && (kid = cPMOPo->op_pmreplroot))
409 sv_setiv(newSVrv(opsv, opclassnames[OPc_PMOP]), PTR2IV(kid));
410 walkoptree(aTHX_ opsv, method);
415 typedef UNOP *B__UNOP;
416 typedef BINOP *B__BINOP;
417 typedef LOGOP *B__LOGOP;
418 typedef LISTOP *B__LISTOP;
419 typedef PMOP *B__PMOP;
420 typedef SVOP *B__SVOP;
421 typedef PADOP *B__PADOP;
422 typedef PVOP *B__PVOP;
423 typedef LOOP *B__LOOP;
440 typedef MAGIC *B__MAGIC;
442 MODULE = B PACKAGE = B PREFIX = B_
448 HV *stash = gv_stashpvn("B", 1, TRUE);
449 AV *export_ok = perl_get_av("B::EXPORT_OK",TRUE);
451 specialsv_list[0] = Nullsv;
452 specialsv_list[1] = &PL_sv_undef;
453 specialsv_list[2] = &PL_sv_yes;
454 specialsv_list[3] = &PL_sv_no;
455 specialsv_list[4] = pWARN_ALL;
456 specialsv_list[5] = pWARN_NONE;
457 specialsv_list[6] = pWARN_STD;
461 #define B_main_cv() PL_main_cv
462 #define B_init_av() PL_initav
463 #define B_inc_gv() PL_incgv
464 #define B_check_av() PL_checkav_save
465 #define B_begin_av() PL_beginav_save
466 #define B_end_av() PL_endav
467 #define B_main_root() PL_main_root
468 #define B_main_start() PL_main_start
469 #define B_amagic_generation() PL_amagic_generation
470 #define B_defstash() PL_defstash
471 #define B_curstash() PL_curstash
472 #define B_dowarn() PL_dowarn
473 #define B_comppadlist() (PL_main_cv ? CvPADLIST(PL_main_cv) : CvPADLIST(PL_compcv))
474 #define B_sv_undef() &PL_sv_undef
475 #define B_sv_yes() &PL_sv_yes
476 #define B_sv_no() &PL_sv_no
478 #define B_regex_padav() PL_regex_padav
513 B_amagic_generation()
539 ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_warnhook);
544 ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_diehook);
546 MODULE = B PACKAGE = B
549 walkoptree(opsv, method)
553 walkoptree(aTHX_ opsv, method);
556 walkoptree_debug(...)
559 RETVAL = walkoptree_debug;
560 if (items > 0 && SvTRUE(ST(1)))
561 walkoptree_debug = 1;
565 #define address(sv) PTR2IV(sv)
576 croak("argument is not a reference");
577 RETVAL = (SV*)SvRV(sv);
588 ST(0) = sv_newmortal();
589 if (strncmp(name,"pp_",3) == 0)
591 for (i = 0; i < PL_maxo; i++)
593 if (strcmp(name, PL_op_name[i]) == 0)
599 sv_setiv(ST(0),result);
606 ST(0) = sv_newmortal();
607 if (opnum >= 0 && opnum < PL_maxo) {
608 sv_setpvn(ST(0), "pp_", 3);
609 sv_catpv(ST(0), PL_op_name[opnum]);
619 char hexhash[19]; /* must fit "0xffffffffffffffff" plus trailing \0 */
621 PERL_HASH(hash, s, len);
622 sprintf(hexhash, "0x%"UVxf, (UV)hash);
623 ST(0) = sv_2mortal(newSVpv(hexhash, 0));
625 #define cast_I32(foo) (I32)foo
644 RETVAL = cstring(aTHX_ sv, 0);
652 RETVAL = cstring(aTHX_ sv, 1);
660 RETVAL = cchar(aTHX_ sv);
669 #define OP_next(o) o->op_next
670 #define OP_sibling(o) o->op_sibling
671 #define OP_desc(o) PL_op_desc[o->op_type]
672 #define OP_targ(o) o->op_targ
673 #define OP_type(o) o->op_type
674 #define OP_seq(o) o->op_seq
675 #define OP_flags(o) o->op_flags
676 #define OP_private(o) o->op_private
678 MODULE = B PACKAGE = B::OP PREFIX = OP_
684 RETVAL = opsizes[cc_opclass(aTHX_ o)];
700 RETVAL = PL_op_name[o->op_type];
710 SV *sv = sv_newmortal();
712 sv_setpvn(sv, "PL_ppaddr[OP_", 13);
713 sv_catpv(sv, PL_op_name[o->op_type]);
714 for (i=13; (STRLEN)i < SvCUR(sv); ++i)
715 SvPVX(sv)[i] = toUPPER(SvPVX(sv)[i]);
743 #define UNOP_first(o) o->op_first
745 MODULE = B PACKAGE = B::UNOP PREFIX = UNOP_
751 #define BINOP_last(o) o->op_last
753 MODULE = B PACKAGE = B::BINOP PREFIX = BINOP_
759 #define LOGOP_other(o) o->op_other
761 MODULE = B PACKAGE = B::LOGOP PREFIX = LOGOP_
767 MODULE = B PACKAGE = B::LISTOP PREFIX = LISTOP_
776 for (kid = o->op_first; kid; kid = kid->op_sibling)
782 #define PMOP_pmreplroot(o) o->op_pmreplroot
783 #define PMOP_pmreplstart(o) o->op_pmreplstart
784 #define PMOP_pmnext(o) o->op_pmnext
785 #define PMOP_pmregexp(o) PM_GETRE(o)
787 #define PMOP_pmoffset(o) o->op_pmoffset
788 #define PMOP_pmstashpv(o) o->op_pmstashpv
790 #define PMOP_pmstash(o) o->op_pmstash
792 #define PMOP_pmflags(o) o->op_pmflags
793 #define PMOP_pmpermflags(o) o->op_pmpermflags
794 #define PMOP_pmdynflags(o) o->op_pmdynflags
796 MODULE = B PACKAGE = B::PMOP PREFIX = PMOP_
803 ST(0) = sv_newmortal();
804 root = o->op_pmreplroot;
805 /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
806 if (o->op_type == OP_PUSHRE) {
808 sv_setiv(ST(0), INT2PTR(PADOFFSET,root) );
810 sv_setiv(newSVrv(ST(0), root ?
811 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
816 sv_setiv(newSVrv(ST(0), cc_opclassname(aTHX_ root)), PTR2IV(root));
860 REGEXP * rx = NO_INIT
862 ST(0) = sv_newmortal();
865 sv_setpvn(ST(0), rx->precomp, rx->prelen);
867 #define SVOP_sv(o) cSVOPo->op_sv
868 #define SVOP_gv(o) ((GV*)cSVOPo->op_sv)
870 MODULE = B PACKAGE = B::SVOP PREFIX = SVOP_
880 #define PADOP_padix(o) o->op_padix
881 #define PADOP_sv(o) (o->op_padix ? PAD_SVl(o->op_padix) : Nullsv)
882 #define PADOP_gv(o) ((o->op_padix \
883 && SvTYPE(PAD_SVl(o->op_padix)) == SVt_PVGV) \
884 ? (GV*)PAD_SVl(o->op_padix) : Nullgv)
886 MODULE = B PACKAGE = B::PADOP PREFIX = PADOP_
900 MODULE = B PACKAGE = B::PVOP PREFIX = PVOP_
907 * OP_TRANS uses op_pv to point to a table of 256 or >=258 shorts
908 * whereas other PVOPs point to a null terminated string.
910 if (o->op_type == OP_TRANS &&
911 (o->op_private & OPpTRANS_COMPLEMENT) &&
912 !(o->op_private & OPpTRANS_DELETE))
914 short* tbl = (short*)o->op_pv;
915 short entries = 257 + tbl[256];
916 ST(0) = sv_2mortal(newSVpv(o->op_pv, entries * sizeof(short)));
918 else if (o->op_type == OP_TRANS) {
919 ST(0) = sv_2mortal(newSVpv(o->op_pv, 256 * sizeof(short)));
922 ST(0) = sv_2mortal(newSVpv(o->op_pv, 0));
924 #define LOOP_redoop(o) o->op_redoop
925 #define LOOP_nextop(o) o->op_nextop
926 #define LOOP_lastop(o) o->op_lastop
928 MODULE = B PACKAGE = B::LOOP PREFIX = LOOP_
943 #define COP_label(o) o->cop_label
944 #define COP_stashpv(o) CopSTASHPV(o)
945 #define COP_stash(o) CopSTASH(o)
946 #define COP_file(o) CopFILE(o)
947 #define COP_cop_seq(o) o->cop_seq
948 #define COP_arybase(o) o->cop_arybase
949 #define COP_line(o) CopLINE(o)
950 #define COP_warnings(o) o->cop_warnings
951 #define COP_io(o) o->cop_io
953 MODULE = B PACKAGE = B::COP PREFIX = COP_
991 MODULE = B PACKAGE = B::SV
997 MODULE = B PACKAGE = B::SV PREFIX = Sv
1019 MODULE = B PACKAGE = B::IV PREFIX = Sv
1034 MODULE = B PACKAGE = B::IV
1036 #define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))
1046 if (sizeof(IV) == 8) {
1050 * The following way of spelling 32 is to stop compilers on
1051 * 32-bit architectures from moaning about the shift count
1052 * being >= the width of the type. Such architectures don't
1053 * reach this code anyway (unless sizeof(IV) > 8 but then
1054 * everything else breaks too so I'm not fussed at the moment).
1057 wp[0] = htonl(((UV)iv) >> (sizeof(UV)*4));
1059 wp[0] = htonl(((U32)iv) >> (sizeof(UV)*4));
1061 wp[1] = htonl(iv & 0xffffffff);
1062 ST(0) = sv_2mortal(newSVpvn((char *)wp, 8));
1064 U32 w = htonl((U32)SvIVX(sv));
1065 ST(0) = sv_2mortal(newSVpvn((char *)&w, 4));
1068 MODULE = B PACKAGE = B::NV PREFIX = Sv
1078 MODULE = B PACKAGE = B::RV PREFIX = Sv
1084 MODULE = B PACKAGE = B::PV PREFIX = Sv
1098 croak( "argument is not SvROK" );
1107 ST(0) = sv_newmortal();
1109 sv_setpvn(ST(0), SvPVX(sv), SvCUR(sv));
1110 SvFLAGS(ST(0)) |= SvUTF8(sv);
1113 /* XXX for backward compatibility, but should fail */
1114 /* croak( "argument is not SvPOK" ); */
1115 sv_setpvn(ST(0), NULL, 0);
1122 ST(0) = sv_newmortal();
1123 sv_setpvn(ST(0), SvPVX(sv),
1124 SvCUR(sv) + (SvTYPE(sv) == SVt_PVBM ? 257 : 0));
1135 MODULE = B PACKAGE = B::PVMG PREFIX = Sv
1140 MAGIC * mg = NO_INIT
1142 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
1143 XPUSHs(make_mg_object(aTHX_ sv_newmortal(), mg));
1145 MODULE = B PACKAGE = B::PVMG
1151 #define MgMOREMAGIC(mg) mg->mg_moremagic
1152 #define MgPRIVATE(mg) mg->mg_private
1153 #define MgTYPE(mg) mg->mg_type
1154 #define MgFLAGS(mg) mg->mg_flags
1155 #define MgOBJ(mg) mg->mg_obj
1156 #define MgLENGTH(mg) mg->mg_len
1157 #define MgREGEX(mg) PTR2IV(mg->mg_obj)
1159 MODULE = B PACKAGE = B::MAGIC PREFIX = Mg
1165 if( MgMOREMAGIC(mg) ) {
1166 RETVAL = MgMOREMAGIC(mg);
1194 if( mg->mg_type == 'r' ) {
1195 RETVAL = MgREGEX(mg);
1198 croak( "REGEX is only meaningful on r-magic" );
1207 if (mg->mg_type == 'r') {
1208 REGEXP* rx = (REGEXP*)mg->mg_obj;
1210 RETVAL = newSVpvn( rx->precomp, rx->prelen );
1213 croak( "precomp is only meaningful on r-magic" );
1226 ST(0) = sv_newmortal();
1228 if (mg->mg_len >= 0){
1229 sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
1230 } else if (mg->mg_len == HEf_SVKEY) {
1231 ST(0) = make_sv_object(aTHX_
1232 sv_newmortal(), (SV*)mg->mg_ptr);
1236 MODULE = B PACKAGE = B::PVLV PREFIX = Lv
1254 MODULE = B PACKAGE = B::BM PREFIX = Bm
1271 STRLEN len = NO_INIT
1272 char * str = NO_INIT
1274 str = SvPV(sv, len);
1275 /* Boyer-Moore table is just after string and its safety-margin \0 */
1276 ST(0) = sv_2mortal(newSVpvn(str + len + 1, 256));
1278 MODULE = B PACKAGE = B::GV PREFIX = Gv
1284 ST(0) = sv_2mortal(newSVpvn(GvNAME(gv), GvNAMELEN(gv)));
1290 RETVAL = GvGP(gv) == Null(GP*);
1346 MODULE = B PACKAGE = B::GV
1356 MODULE = B PACKAGE = B::IO PREFIX = Io
1409 if( strEQ( name, "stdin" ) ) {
1410 handle = PerlIO_stdin();
1412 else if( strEQ( name, "stdout" ) ) {
1413 handle = PerlIO_stdout();
1415 else if( strEQ( name, "stderr" ) ) {
1416 handle = PerlIO_stderr();
1419 croak( "Invalid value '%s'", name );
1421 RETVAL = handle == IoIFP(io);
1425 MODULE = B PACKAGE = B::IO
1435 MODULE = B PACKAGE = B::AV PREFIX = Av
1445 #define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off
1455 if (AvFILL(av) >= 0) {
1456 SV **svp = AvARRAY(av);
1458 for (i = 0; i <= AvFILL(av); i++)
1459 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), svp[i]));
1462 MODULE = B PACKAGE = B::AV
1468 MODULE = B PACKAGE = B::CV PREFIX = Cv
1514 ST(0) = sv_2mortal(newSViv(PTR2IV(CvXSUB(cv))));
1521 ST(0) = CvCONST(cv) ?
1522 make_sv_object(aTHX_ sv_newmortal(),CvXSUBANY(cv).any_ptr) :
1523 sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));
1525 MODULE = B PACKAGE = B::CV
1531 MODULE = B PACKAGE = B::CV PREFIX = cv_
1538 MODULE = B PACKAGE = B::HV PREFIX = Hv
1568 if (HvKEYS(hv) > 0) {
1572 (void)hv_iterinit(hv);
1573 EXTEND(sp, HvKEYS(hv) * 2);
1574 while ((sv = hv_iternextsv(hv, &key, &len))) {
1575 PUSHs(newSVpvn(key, len));
1576 PUSHs(make_sv_object(aTHX_ sv_newmortal(), sv));