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.
18 #define PL_op_name (get_op_names())
19 #define PL_opargs (get_opargs())
20 #define PL_op_desc (get_op_descs())
24 typedef PerlIO * InputStream;
26 typedef FILE * InputStream;
30 static char *svclassnames[] = {
65 static char *opclassnames[] = {
81 static int walkoptree_debug = 0; /* Flag for walkoptree debug hook */
83 static SV *specialsv_list[4];
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);
97 switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
122 case OA_PVOP_OR_SVOP:
124 * Character translations (tr///) are usually a PVOP, keeping a
125 * pointer to a table of shorts used to look up translations.
126 * Under utf8, however, a simple table isn't practical; instead,
127 * the OP is an SVOP, and the SV is a reference to a swash
128 * (i.e., an RV pointing to an HV).
130 return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
131 ? OPc_SVOP : OPc_PVOP;
139 case OA_BASEOP_OR_UNOP:
141 * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
142 * whether parens were seen. perly.y uses OPf_SPECIAL to
143 * signal whether a BASEOP had empty parens or none.
144 * Some other UNOPs are created later, though, so the best
145 * test is OPf_KIDS, which is set in newUNOP.
147 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
151 * The file stat OPs are created via UNI(OP_foo) in toke.c but use
152 * the OPf_REF flag to distinguish between OP types instead of the
153 * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
154 * return OPc_UNOP so that walkoptree can find our children. If
155 * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
156 * (no argument to the operator) it's an OP; with OPf_REF set it's
157 * a GVOP (and op_gv is the GV for the filehandle argument).
159 return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
160 (o->op_flags & OPf_REF) ? OPc_GVOP : OPc_BASEOP);
164 * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
165 * label was omitted (in which case it's a BASEOP) or else a term was
166 * seen. In this last case, all except goto are definitely PVOP but
167 * goto is either a PVOP (with an ordinary constant label), an UNOP
168 * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
169 * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
172 if (o->op_flags & OPf_STACKED)
174 else if (o->op_flags & OPf_SPECIAL)
179 warn("can't determine class of operator %s, assuming BASEOP\n",
180 PL_op_name[o->op_type]);
185 cc_opclassname(pTHX_ OP *o)
187 return opclassnames[cc_opclass(aTHX_ o)];
191 make_sv_object(pTHX_ SV *arg, SV *sv)
196 for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
197 if (sv == specialsv_list[iv]) {
203 type = svclassnames[SvTYPE(sv)];
206 sv_setiv(newSVrv(arg, type), iv);
211 make_mg_object(pTHX_ SV *arg, MAGIC *mg)
213 sv_setiv(newSVrv(arg, "B::MAGIC"), (IV)mg);
218 cstring(pTHX_ SV *sv)
220 SV *sstr = newSVpvn("", 0);
225 sv_setpvn(sstr, "0", 1);
230 sv_catpv(sstr, "\"");
231 for (; len; len--, s++)
233 /* At least try a little for readability */
235 sv_catpv(sstr, "\\\"");
237 sv_catpv(sstr, "\\\\");
238 else if (*s >= ' ' && *s < 127) /* XXX not portable */
239 sv_catpvn(sstr, s, 1);
241 sv_catpv(sstr, "\\n");
243 sv_catpv(sstr, "\\r");
245 sv_catpv(sstr, "\\t");
247 sv_catpv(sstr, "\\a");
249 sv_catpv(sstr, "\\b");
251 sv_catpv(sstr, "\\f");
253 sv_catpv(sstr, "\\v");
256 /* no trigraph support */
257 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
258 /* Don't want promotion of a signed -1 char in sprintf args */
259 unsigned char c = (unsigned char) *s;
260 sprintf(escbuff, "\\%03o", c);
261 sv_catpv(sstr, escbuff);
263 /* XXX Add line breaks if string is long */
265 sv_catpv(sstr, "\"");
273 SV *sstr = newSVpvn("'", 1);
275 char *s = SvPV(sv, n_a);
278 sv_catpv(sstr, "\\'");
280 sv_catpv(sstr, "\\\\");
281 else if (*s >= ' ' && *s < 127) /* XXX not portable */
282 sv_catpvn(sstr, s, 1);
284 sv_catpv(sstr, "\\n");
286 sv_catpv(sstr, "\\r");
288 sv_catpv(sstr, "\\t");
290 sv_catpv(sstr, "\\a");
292 sv_catpv(sstr, "\\b");
294 sv_catpv(sstr, "\\f");
296 sv_catpv(sstr, "\\v");
299 /* no trigraph support */
300 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
301 /* Don't want promotion of a signed -1 char in sprintf args */
302 unsigned char c = (unsigned char) *s;
303 sprintf(escbuff, "\\%03o", c);
304 sv_catpv(sstr, escbuff);
311 walkoptree(pTHX_ SV *opsv, char *method)
317 croak("opsv is not a reference");
318 opsv = sv_mortalcopy(opsv);
319 o = (OP*)SvIV((SV*)SvRV(opsv));
320 if (walkoptree_debug) {
324 perl_call_method("walkoptree_debug", G_DISCARD);
329 perl_call_method(method, G_DISCARD);
330 if (o && (o->op_flags & OPf_KIDS)) {
332 for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
333 /* Use the same opsv. Rely on methods not to mess it up. */
334 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), (IV)kid);
335 walkoptree(aTHX_ opsv, method);
341 typedef UNOP *B__UNOP;
342 typedef BINOP *B__BINOP;
343 typedef LOGOP *B__LOGOP;
344 typedef LISTOP *B__LISTOP;
345 typedef PMOP *B__PMOP;
346 typedef SVOP *B__SVOP;
347 typedef GVOP *B__GVOP;
348 typedef PVOP *B__PVOP;
349 typedef LOOP *B__LOOP;
366 typedef MAGIC *B__MAGIC;
368 MODULE = B PACKAGE = B PREFIX = B_
374 HV *stash = gv_stashpvn("B", 1, TRUE);
375 AV *export_ok = perl_get_av("B::EXPORT_OK",TRUE);
376 specialsv_list[0] = Nullsv;
377 specialsv_list[1] = &PL_sv_undef;
378 specialsv_list[2] = &PL_sv_yes;
379 specialsv_list[3] = &PL_sv_no;
383 #define B_main_cv() PL_main_cv
384 #define B_init_av() PL_initav
385 #define B_main_root() PL_main_root
386 #define B_main_start() PL_main_start
387 #define B_amagic_generation() PL_amagic_generation
388 #define B_comppadlist() (PL_main_cv ? CvPADLIST(PL_main_cv) : CvPADLIST(PL_compcv))
389 #define B_sv_undef() &PL_sv_undef
390 #define B_sv_yes() &PL_sv_yes
391 #define B_sv_no() &PL_sv_no
406 B_amagic_generation()
420 MODULE = B PACKAGE = B
424 walkoptree(opsv, method)
428 walkoptree(aTHX_ opsv, method);
431 walkoptree_debug(...)
433 RETVAL = walkoptree_debug;
434 if (items > 0 && SvTRUE(ST(1)))
435 walkoptree_debug = 1;
439 #define address(sv) (IV)sv
450 croak("argument is not a reference");
451 RETVAL = (SV*)SvRV(sv);
462 ST(0) = sv_newmortal();
463 if (strncmp(name,"pp_",3) == 0)
465 for (i = 0; i < PL_maxo; i++)
467 if (strcmp(name, PL_op_name[i]) == 0)
473 sv_setiv(ST(0),result);
480 ST(0) = sv_newmortal();
481 if (opnum >= 0 && opnum < PL_maxo) {
482 sv_setpvn(ST(0), "pp_", 3);
483 sv_catpv(ST(0), PL_op_name[opnum]);
493 char hexhash[19]; /* must fit "0xffffffff" plus trailing \0 */
495 PERL_HASH(hash, s, len);
496 sprintf(hexhash, "0x%x", hash);
497 ST(0) = sv_2mortal(newSVpv(hexhash, 0));
499 #define cast_I32(foo) (I32)foo
513 RETVAL = cstring(aTHX_ sv);
521 RETVAL = cchar(aTHX_ sv);
530 STRLEN len = strlen(PL_threadsv_names);
533 for (i = 0; i < len; i++)
534 PUSHs(sv_2mortal(newSVpvn(&PL_threadsv_names[i], 1)));
538 #define OP_next(o) o->op_next
539 #define OP_sibling(o) o->op_sibling
540 #define OP_desc(o) PL_op_desc[o->op_type]
541 #define OP_targ(o) o->op_targ
542 #define OP_type(o) o->op_type
543 #define OP_seq(o) o->op_seq
544 #define OP_flags(o) o->op_flags
545 #define OP_private(o) o->op_private
547 MODULE = B PACKAGE = B::OP PREFIX = OP_
561 ST(0) = sv_newmortal();
562 sv_setpvn(ST(0), "pp_", 3);
563 sv_catpv(ST(0), PL_op_name[o->op_type]);
589 #define UNOP_first(o) o->op_first
591 MODULE = B PACKAGE = B::UNOP PREFIX = UNOP_
597 #define BINOP_last(o) o->op_last
599 MODULE = B PACKAGE = B::BINOP PREFIX = BINOP_
605 #define LOGOP_other(o) o->op_other
607 MODULE = B PACKAGE = B::LOGOP PREFIX = LOGOP_
613 #define LISTOP_children(o) o->op_children
615 MODULE = B PACKAGE = B::LISTOP PREFIX = LISTOP_
621 #define PMOP_pmreplroot(o) o->op_pmreplroot
622 #define PMOP_pmreplstart(o) o->op_pmreplstart
623 #define PMOP_pmnext(o) o->op_pmnext
624 #define PMOP_pmregexp(o) o->op_pmregexp
625 #define PMOP_pmflags(o) o->op_pmflags
626 #define PMOP_pmpermflags(o) o->op_pmpermflags
628 MODULE = B PACKAGE = B::PMOP PREFIX = PMOP_
635 ST(0) = sv_newmortal();
636 root = o->op_pmreplroot;
637 /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
638 if (o->op_type == OP_PUSHRE) {
639 sv_setiv(newSVrv(ST(0), root ?
640 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
644 sv_setiv(newSVrv(ST(0), cc_opclassname(aTHX_ root)), (IV)root);
666 REGEXP * rx = NO_INIT
668 ST(0) = sv_newmortal();
671 sv_setpvn(ST(0), rx->precomp, rx->prelen);
673 #define SVOP_sv(o) o->op_sv
675 MODULE = B PACKAGE = B::SVOP PREFIX = SVOP_
682 #define GVOP_gv(o) o->op_gv
684 MODULE = B PACKAGE = B::GVOP PREFIX = GVOP_
691 MODULE = B PACKAGE = B::PVOP PREFIX = PVOP_
698 * OP_TRANS uses op_pv to point to a table of 256 shorts
699 * whereas other PVOPs point to a null terminated string.
701 ST(0) = sv_2mortal(newSVpv(o->op_pv, (o->op_type == OP_TRANS) ?
702 256 * sizeof(short) : 0));
704 #define LOOP_redoop(o) o->op_redoop
705 #define LOOP_nextop(o) o->op_nextop
706 #define LOOP_lastop(o) o->op_lastop
708 MODULE = B PACKAGE = B::LOOP PREFIX = LOOP_
723 #define COP_label(o) o->cop_label
724 #define COP_stash(o) o->cop_stash
725 #define COP_filegv(o) o->cop_filegv
726 #define COP_cop_seq(o) o->cop_seq
727 #define COP_arybase(o) o->cop_arybase
728 #define COP_line(o) o->cop_line
729 #define COP_warnings(o) o->cop_warnings
731 MODULE = B PACKAGE = B::COP PREFIX = COP_
761 MODULE = B PACKAGE = B::SV PREFIX = Sv
771 MODULE = B PACKAGE = B::IV PREFIX = Sv
786 MODULE = B PACKAGE = B::IV
788 #define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))
798 if (sizeof(IV) == 8) {
802 * The following way of spelling 32 is to stop compilers on
803 * 32-bit architectures from moaning about the shift count
804 * being >= the width of the type. Such architectures don't
805 * reach this code anyway (unless sizeof(IV) > 8 but then
806 * everything else breaks too so I'm not fussed at the moment).
808 wp[0] = htonl(((U32)iv) >> (sizeof(IV)*4));
809 wp[1] = htonl(iv & 0xffffffff);
810 ST(0) = sv_2mortal(newSVpvn((char *)wp, 8));
812 U32 w = htonl((U32)SvIVX(sv));
813 ST(0) = sv_2mortal(newSVpvn((char *)&w, 4));
816 MODULE = B PACKAGE = B::NV PREFIX = Sv
826 MODULE = B PACKAGE = B::RV PREFIX = Sv
832 MODULE = B PACKAGE = B::PV PREFIX = Sv
838 ST(0) = sv_newmortal();
839 sv_setpvn(ST(0), SvPVX(sv), SvCUR(sv));
849 MODULE = B PACKAGE = B::PVMG PREFIX = Sv
856 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
857 XPUSHs(make_mg_object(aTHX_ sv_newmortal(), mg));
859 MODULE = B PACKAGE = B::PVMG
865 #define MgMOREMAGIC(mg) mg->mg_moremagic
866 #define MgPRIVATE(mg) mg->mg_private
867 #define MgTYPE(mg) mg->mg_type
868 #define MgFLAGS(mg) mg->mg_flags
869 #define MgOBJ(mg) mg->mg_obj
870 #define MgLENGTH(mg) mg->mg_len
872 MODULE = B PACKAGE = B::MAGIC PREFIX = Mg
902 ST(0) = sv_newmortal();
904 if (mg->mg_len >= 0){
905 sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
907 if (mg->mg_len == HEf_SVKEY)
908 sv_setsv(ST(0),newRV((SV*)mg->mg_ptr));
912 MODULE = B PACKAGE = B::PVLV PREFIX = Lv
930 MODULE = B PACKAGE = B::BM PREFIX = Bm
951 /* Boyer-Moore table is just after string and its safety-margin \0 */
952 ST(0) = sv_2mortal(newSVpvn(str + len + 1, 256));
954 MODULE = B PACKAGE = B::GV PREFIX = Gv
960 ST(0) = sv_2mortal(newSVpvn(GvNAME(gv), GvNAMELEN(gv)));
1006 MODULE = B PACKAGE = B::GV
1016 MODULE = B PACKAGE = B::IO PREFIX = Io
1062 MODULE = B PACKAGE = B::IO
1072 MODULE = B PACKAGE = B::AV PREFIX = Av
1082 #define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off
1092 if (AvFILL(av) >= 0) {
1093 SV **svp = AvARRAY(av);
1095 for (i = 0; i <= AvFILL(av); i++)
1096 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), svp[i]));
1099 MODULE = B PACKAGE = B::AV
1105 MODULE = B PACKAGE = B::CV PREFIX = Cv
1143 ST(0) = sv_2mortal(newSViv((IV)CvXSUB(cv)));
1150 ST(0) = sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));
1152 MODULE = B PACKAGE = B::CV
1159 MODULE = B PACKAGE = B::HV PREFIX = Hv
1189 if (HvKEYS(hv) > 0) {
1193 (void)hv_iterinit(hv);
1194 EXTEND(sp, HvKEYS(hv) * 2);
1195 while (sv = hv_iternextsv(hv, &key, &len)) {
1196 PUSHs(newSVpvn(key, len));
1197 PUSHs(make_sv_object(aTHX_ sv_newmortal(), sv));