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.
15 static char *svclassnames[] = {
51 static char *opclassnames[] = {
68 static int walkoptree_debug = 0; /* Flag for walkoptree debug hook */
77 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
79 if (o->op_type == OP_SASSIGN)
80 return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
82 switch (opargs[o->op_type] & OA_CLASS_MASK) {
119 case OA_BASEOP_OR_UNOP:
121 * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
122 * whether bare parens were seen. perly.y uses OPf_SPECIAL to
123 * signal whether an OP or an UNOP was chosen.
124 * Frederic.Chauveau@pasteur.fr says we need to check for OPf_KIDS too.
126 return ((o->op_flags & OPf_SPECIAL) ? OPc_BASEOP :
127 (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP);
131 * The file stat OPs are created via UNI(OP_foo) in toke.c but use
132 * the OPf_REF flag to distinguish between OP types instead of the
133 * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
134 * return OPc_UNOP so that walkoptree can find our children. If
135 * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
136 * (no argument to the operator) it's an OP; with OPf_REF set it's
137 * a GVOP (and op_gv is the GV for the filehandle argument).
139 return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
140 (o->op_flags & OPf_REF) ? OPc_GVOP : OPc_BASEOP);
144 * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
145 * label was omitted (in which case it's a BASEOP) or else a term was
146 * seen. In this last case, all except goto are definitely PVOP but
147 * goto is either a PVOP (with an ordinary constant label), an UNOP
148 * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
149 * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
152 if (o->op_flags & OPf_STACKED)
154 else if (o->op_flags & OPf_SPECIAL)
159 warn("can't determine class of operator %s, assuming BASEOP\n",
160 op_name[o->op_type]);
165 cc_opclassname(OP *o)
167 return opclassnames[cc_opclass(o)];
171 make_sv_object(SV *arg, SV *sv)
176 for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
177 if (sv == specialsv_list[iv]) {
183 type = svclassnames[SvTYPE(sv)];
186 sv_setiv(newSVrv(arg, type), iv);
191 make_mg_object(SV *arg, MAGIC *mg)
193 sv_setiv(newSVrv(arg, "B::MAGIC"), (IV)mg);
200 SV *sstr = newSVpv("", 0);
205 sv_setpvn(sstr, "0", 1);
210 sv_catpv(sstr, "\"");
211 for (; len; len--, s++)
213 /* At least try a little for readability */
215 sv_catpv(sstr, "\\\"");
217 sv_catpv(sstr, "\\\\");
218 else if (*s >= ' ' && *s < 127) /* XXX not portable */
219 sv_catpvn(sstr, s, 1);
221 sv_catpv(sstr, "\\n");
223 sv_catpv(sstr, "\\r");
225 sv_catpv(sstr, "\\t");
227 sv_catpv(sstr, "\\a");
229 sv_catpv(sstr, "\\b");
231 sv_catpv(sstr, "\\f");
233 sv_catpv(sstr, "\\v");
236 /* no trigraph support */
237 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
238 /* Don't want promotion of a signed -1 char in sprintf args */
239 unsigned char c = (unsigned char) *s;
240 sprintf(escbuff, "\\%03o", c);
241 sv_catpv(sstr, escbuff);
243 /* XXX Add line breaks if string is long */
245 sv_catpv(sstr, "\"");
253 SV *sstr = newSVpv("'", 0);
254 char *s = SvPV(sv, na);
257 sv_catpv(sstr, "\\'");
259 sv_catpv(sstr, "\\\\");
260 else if (*s >= ' ' && *s < 127) /* XXX not portable */
261 sv_catpvn(sstr, s, 1);
263 sv_catpv(sstr, "\\n");
265 sv_catpv(sstr, "\\r");
267 sv_catpv(sstr, "\\t");
269 sv_catpv(sstr, "\\a");
271 sv_catpv(sstr, "\\b");
273 sv_catpv(sstr, "\\f");
275 sv_catpv(sstr, "\\v");
278 /* no trigraph support */
279 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
280 /* Don't want promotion of a signed -1 char in sprintf args */
281 unsigned char c = (unsigned char) *s;
282 sprintf(escbuff, "\\%03o", c);
283 sv_catpv(sstr, escbuff);
289 #ifdef INDIRECT_BGET_MACROS
290 void freadpv(U32 len, void *data)
292 New(666, pv.xpv_pv, len, char);
293 fread(pv.xpv_pv, 1, len, (FILE*)data);
295 pv.xpv_cur = len - 1;
298 void byteload_fh(FILE *fp)
300 struct bytestream bs;
302 bs.fgetc = (int(*) _((void*)))fgetc;
303 bs.fread = (int(*) _((char*,size_t,size_t,void*)))fread;
304 bs.freadpv = freadpv;
308 static int fgetc_fromstring(void *data)
310 char **strp = (char **)data;
314 static int fread_fromstring(char *argp, size_t elemsize, size_t nelem,
317 char **strp = (char **)data;
318 size_t len = elemsize * nelem;
320 memcpy(argp, *strp, len);
325 static void freadpv_fromstring(U32 len, void *data)
327 char **strp = (char **)data;
329 New(666, pv.xpv_pv, len, char);
330 memcpy(pv.xpv_pv, *strp, len);
332 pv.xpv_cur = len - 1;
336 void byteload_string(char *str)
338 struct bytestream bs;
340 bs.fgetc = fgetc_fromstring;
341 bs.fread = fread_fromstring;
342 bs.freadpv = freadpv_fromstring;
346 void byteload_fh(FILE *fp)
351 void byteload_string(char *str)
353 croak("Must compile with -DINDIRECT_BGET_MACROS for byteload_string");
355 #endif /* INDIRECT_BGET_MACROS */
358 walkoptree(SV *opsv, char *method)
364 croak("opsv is not a reference");
365 opsv = sv_mortalcopy(opsv);
366 o = (OP*)SvIV((SV*)SvRV(opsv));
367 if (walkoptree_debug) {
371 perl_call_method("walkoptree_debug", G_DISCARD);
376 perl_call_method(method, G_DISCARD);
377 if (o && (o->op_flags & OPf_KIDS)) {
379 for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
380 /* Use the same opsv. Rely on methods not to mess it up. */
381 sv_setiv(newSVrv(opsv, cc_opclassname(kid)), (IV)kid);
382 walkoptree(opsv, method);
388 typedef UNOP *B__UNOP;
389 typedef BINOP *B__BINOP;
390 typedef LOGOP *B__LOGOP;
391 typedef CONDOP *B__CONDOP;
392 typedef LISTOP *B__LISTOP;
393 typedef PMOP *B__PMOP;
394 typedef SVOP *B__SVOP;
395 typedef GVOP *B__GVOP;
396 typedef PVOP *B__PVOP;
397 typedef LOOP *B__LOOP;
414 typedef MAGIC *B__MAGIC;
416 MODULE = B PACKAGE = B PREFIX = B_
423 #define B_main_cv() main_cv
424 #define B_main_root() main_root
425 #define B_main_start() main_start
426 #define B_comppadlist() (main_cv ? CvPADLIST(main_cv) : CvPADLIST(compcv))
427 #define B_sv_undef() &sv_undef
428 #define B_sv_yes() &sv_yes
429 #define B_sv_no() &sv_no
452 MODULE = B PACKAGE = B
456 walkoptree(opsv, method)
461 walkoptree_debug(...)
463 RETVAL = walkoptree_debug;
464 if (items > 0 && SvTRUE(ST(1)))
465 walkoptree_debug = 1;
482 #define address(sv) (IV)sv
493 croak("argument is not a reference");
494 RETVAL = (SV*)SvRV(sv);
502 ST(0) = sv_newmortal();
503 if (opnum >= 0 && opnum < maxo) {
504 sv_setpvn(ST(0), "pp_", 3);
505 sv_catpv(ST(0), op_name[opnum]);
515 char hexhash[11]; /* must fit "0xffffffff" plus trailing \0 */
518 hash = hash * 33 + *s++;
519 sprintf(hexhash, "0x%x", hash);
520 ST(0) = sv_2mortal(newSVpv(hexhash, 0));
522 #define cast_I32(foo) (I32)foo
545 STRLEN len = strlen(threadsv_names);
548 for (i = 0; i < len; i++)
549 PUSHs(sv_2mortal(newSVpv(&threadsv_names[i], 1)));
553 #define OP_next(o) o->op_next
554 #define OP_sibling(o) o->op_sibling
555 #define OP_desc(o) op_desc[o->op_type]
556 #define OP_targ(o) o->op_targ
557 #define OP_type(o) o->op_type
558 #define OP_seq(o) o->op_seq
559 #define OP_flags(o) o->op_flags
560 #define OP_private(o) o->op_private
562 MODULE = B PACKAGE = B::OP PREFIX = OP_
576 ST(0) = sv_newmortal();
577 sv_setpvn(ST(0), "pp_", 3);
578 sv_catpv(ST(0), op_name[o->op_type]);
604 #define UNOP_first(o) o->op_first
606 MODULE = B PACKAGE = B::UNOP PREFIX = UNOP_
612 #define BINOP_last(o) o->op_last
614 MODULE = B PACKAGE = B::BINOP PREFIX = BINOP_
620 #define LOGOP_other(o) o->op_other
622 MODULE = B PACKAGE = B::LOGOP PREFIX = LOGOP_
628 #define CONDOP_true(o) o->op_true
629 #define CONDOP_false(o) o->op_false
631 MODULE = B PACKAGE = B::CONDOP PREFIX = CONDOP_
641 #define LISTOP_children(o) o->op_children
643 MODULE = B PACKAGE = B::LISTOP PREFIX = LISTOP_
649 #define PMOP_pmreplroot(o) o->op_pmreplroot
650 #define PMOP_pmreplstart(o) o->op_pmreplstart
651 #define PMOP_pmnext(o) o->op_pmnext
652 #define PMOP_pmregexp(o) o->op_pmregexp
653 #define PMOP_pmflags(o) o->op_pmflags
654 #define PMOP_pmpermflags(o) o->op_pmpermflags
656 MODULE = B PACKAGE = B::PMOP PREFIX = PMOP_
663 ST(0) = sv_newmortal();
664 root = o->op_pmreplroot;
665 /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
666 if (o->op_type == OP_PUSHRE) {
667 sv_setiv(newSVrv(ST(0), root ?
668 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
672 sv_setiv(newSVrv(ST(0), cc_opclassname(root)), (IV)root);
694 REGEXP * rx = NO_INIT
696 ST(0) = sv_newmortal();
699 sv_setpvn(ST(0), rx->precomp, rx->prelen);
701 #define SVOP_sv(o) o->op_sv
703 MODULE = B PACKAGE = B::SVOP PREFIX = SVOP_
710 #define GVOP_gv(o) o->op_gv
712 MODULE = B PACKAGE = B::GVOP PREFIX = GVOP_
719 MODULE = B PACKAGE = B::PVOP PREFIX = PVOP_
726 * OP_TRANS uses op_pv to point to a table of 256 shorts
727 * whereas other PVOPs point to a null terminated string.
729 ST(0) = sv_2mortal(newSVpv(o->op_pv, (o->op_type == OP_TRANS) ?
730 256 * sizeof(short) : 0));
732 #define LOOP_redoop(o) o->op_redoop
733 #define LOOP_nextop(o) o->op_nextop
734 #define LOOP_lastop(o) o->op_lastop
736 MODULE = B PACKAGE = B::LOOP PREFIX = LOOP_
751 #define COP_label(o) o->cop_label
752 #define COP_stash(o) o->cop_stash
753 #define COP_filegv(o) o->cop_filegv
754 #define COP_cop_seq(o) o->cop_seq
755 #define COP_arybase(o) o->cop_arybase
756 #define COP_line(o) o->cop_line
758 MODULE = B PACKAGE = B::COP PREFIX = COP_
784 MODULE = B PACKAGE = B::SV PREFIX = Sv
794 MODULE = B PACKAGE = B::IV PREFIX = Sv
804 MODULE = B PACKAGE = B::IV
806 #define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))
816 if (sizeof(IV) == 8) {
820 * The following way of spelling 32 is to stop compilers on
821 * 32-bit architectures from moaning about the shift count
822 * being >= the width of the type. Such architectures don't
823 * reach this code anyway (unless sizeof(IV) > 8 but then
824 * everything else breaks too so I'm not fussed at the moment).
826 wp[0] = htonl(((U32)iv) >> (sizeof(IV)*4));
827 wp[1] = htonl(iv & 0xffffffff);
828 ST(0) = sv_2mortal(newSVpv((char *)wp, 8));
830 U32 w = htonl((U32)SvIVX(sv));
831 ST(0) = sv_2mortal(newSVpv((char *)&w, 4));
834 MODULE = B PACKAGE = B::NV PREFIX = Sv
844 MODULE = B PACKAGE = B::RV PREFIX = Sv
850 MODULE = B PACKAGE = B::PV PREFIX = Sv
856 ST(0) = sv_newmortal();
857 sv_setpvn(ST(0), SvPVX(sv), SvCUR(sv));
859 MODULE = B PACKAGE = B::PVMG PREFIX = Sv
866 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
867 XPUSHs(make_mg_object(sv_newmortal(), mg));
869 MODULE = B PACKAGE = B::PVMG
875 #define MgMOREMAGIC(mg) mg->mg_moremagic
876 #define MgPRIVATE(mg) mg->mg_private
877 #define MgTYPE(mg) mg->mg_type
878 #define MgFLAGS(mg) mg->mg_flags
879 #define MgOBJ(mg) mg->mg_obj
881 MODULE = B PACKAGE = B::MAGIC PREFIX = Mg
907 ST(0) = sv_newmortal();
909 sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
911 MODULE = B PACKAGE = B::PVLV PREFIX = Lv
929 MODULE = B PACKAGE = B::BM PREFIX = Bm
950 /* Boyer-Moore table is just after string and its safety-margin \0 */
951 ST(0) = sv_2mortal(newSVpv(str + len + 1, 256));
953 MODULE = B PACKAGE = B::GV PREFIX = Gv
959 ST(0) = sv_2mortal(newSVpv(GvNAME(gv), GvNAMELEN(gv)));
1005 MODULE = B PACKAGE = B::GV
1015 MODULE = B PACKAGE = B::IO PREFIX = Io
1061 MODULE = B PACKAGE = B::IO
1071 MODULE = B PACKAGE = B::AV PREFIX = Av
1081 #define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off
1091 if (AvFILL(av) >= 0) {
1092 SV **svp = AvARRAY(av);
1094 for (i = 0; i <= AvFILL(av); i++)
1095 XPUSHs(make_sv_object(sv_newmortal(), svp[i]));
1098 MODULE = B PACKAGE = B::AV
1104 MODULE = B PACKAGE = B::CV PREFIX = Cv
1142 ST(0) = sv_2mortal(newSViv((IV)CvXSUB(cv)));
1149 ST(0) = sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));
1151 MODULE = B PACKAGE = B::HV PREFIX = Hv
1181 if (HvKEYS(hv) > 0) {
1185 (void)hv_iterinit(hv);
1186 EXTEND(sp, HvKEYS(hv) * 2);
1187 while (sv = hv_iternextsv(hv, &key, &len)) {
1188 PUSHs(newSVpv(key, len));
1189 PUSHs(make_sv_object(sv_newmortal(), sv));