5 #define NEED_newRV_noinc
6 #define NEED_sv_2pv_flags
10 #define gv_fetchsv(n,f,t) gv_fetchpv(SvPV_nolen(n), f, t)
13 #ifndef mro_method_changed_in
14 #define mro_method_changed_in(x) PL_sub_generation++
18 #define newSVhe(he) newSVhek(HeKEY_hek(he))
20 #define newSVhe(he) newSVpv(HePV(he, PL_na), 0)
24 #define savesvpv(s) savepv(SvPV_nolen(s))
28 #define GvCV_set(gv, cv) (GvCV(gv) = (CV*)(cv))
31 /* HACK: scalar slots are always populated on perl < 5.10, so treat undef
32 * as nonexistent. this is consistent with the previous behavior of the pure
33 * perl version of this module (since this is the behavior that perl sees
36 #define GvSVOK(g) (GvSV(g) && SvTYPE(GvSV(g)) != SVt_NULL)
38 #define GvSVOK(g) GvSV(g)
41 #define GvAVOK(g) GvAV(g)
42 #define GvHVOK(g) GvHV(g)
43 #define GvCVOK(g) GvCVu(g) /* XXX: should this really be GvCVu? or GvCV? */
44 #define GvIOOK(g) GvIO(g)
46 /* see above - don't let scalar slots become unpopulated, this breaks
47 * assumptions in core */
49 #define GvSetSV(g,v) do { \
51 SvREFCNT_dec(GvSV(g)); \
52 if ((GvSV(g) = _v ? _v : newSV(0))) \
53 GvIMPORTED_SV_on(g); \
56 #define GvSetSV(g,v) do { \
57 SvREFCNT_dec(GvSV(g)); \
58 if ((GvSV(g) = (SV*)(v))) \
59 GvIMPORTED_SV_on(g); \
63 #define GvSetAV(g,v) do { \
64 SvREFCNT_dec(GvAV(g)); \
65 if ((GvAV(g) = (AV*)(v))) \
66 GvIMPORTED_AV_on(g); \
68 #define GvSetHV(g,v) do { \
69 SvREFCNT_dec(GvHV(g)); \
70 if ((GvHV(g) = (HV*)(v))) \
71 GvIMPORTED_HV_on(g); \
73 #define GvSetCV(g,v) do { \
74 SvREFCNT_dec(GvCV(g)); \
75 if ((GvCV_set(g, v))) { \
76 GvIMPORTED_CV_on(g); \
80 mro_method_changed_in(GvSTASH(g)); \
82 #define GvSetIO(g,v) do { \
83 SvREFCNT_dec(GvIO(g)); \
84 GvIOp(g) = (IO*)(v); \
94 VAR_GLOB, /* TODO: unimplemented */
95 VAR_FORMAT /* TODO: unimplemented */
103 static U32 name_hash, namespace_hash, type_hash;
104 static SV *name_key, *namespace_key, *type_key;
106 const char *vartype_to_string(vartype_t type)
124 I32 vartype_to_svtype(vartype_t type)
128 return SVt_PV; /* or whatever */
142 vartype_t string_to_vartype(char *vartype)
144 if (strEQ(vartype, "SCALAR")) {
147 else if (strEQ(vartype, "ARRAY")) {
150 else if (strEQ(vartype, "HASH")) {
153 else if (strEQ(vartype, "CODE")) {
156 else if (strEQ(vartype, "IO")) {
160 croak("Type must be one of 'SCALAR', 'ARRAY', 'HASH', 'CODE', or 'IO', not '%s'", vartype);
164 void _deconstruct_variable_name(SV *variable, varspec_t *varspec)
168 if (!SvCUR(variable))
169 croak("You must pass a variable name");
171 varspec->name = sv_2mortal(newSVsv(variable));
173 varpv = SvPV_nolen(varspec->name);
176 varspec->type = VAR_SCALAR;
177 sv_chop(varspec->name, &varpv[1]);
180 varspec->type = VAR_ARRAY;
181 sv_chop(varspec->name, &varpv[1]);
184 varspec->type = VAR_HASH;
185 sv_chop(varspec->name, &varpv[1]);
188 varspec->type = VAR_CODE;
189 sv_chop(varspec->name, &varpv[1]);
192 varspec->type = VAR_IO;
197 void _deconstruct_variable_hash(HV *variable, varspec_t *varspec)
201 val = hv_fetch_ent(variable, name_key, 0, name_hash);
203 croak("The 'name' key is required in variable specs");
205 varspec->name = sv_2mortal(newSVsv(HeVAL(val)));
207 val = hv_fetch_ent(variable, type_key, 0, type_hash);
209 croak("The 'type' key is required in variable specs");
211 varspec->type = string_to_vartype(SvPV_nolen(HeVAL(val)));
214 int _valid_for_type(SV *value, vartype_t type)
216 svtype sv_type = SvROK(value) ? SvTYPE(SvRV(value)) : SVt_NULL;
220 /* XXX: something weird is going on here - apparently values can
221 * be SVt_NULL but also be SvROK (and also, SVt_NULL isn't SvOK) */
222 if (sv_type == SVt_NULL)
224 return SvROK(value) ? SvOK(SvRV(value)) : SvOK(value);
226 return sv_type == SVt_PVAV;
228 return sv_type == SVt_PVHV;
230 return sv_type == SVt_PVCV;
232 return sv_type == SVt_PVIO;
238 HV *_get_namespace(SV *self)
247 call_method("namespace", G_SCALAR);
253 return (HV*)SvRV(ret);
256 SV *_get_name(SV *self)
265 call_method("name", G_SCALAR);
274 void _expand_glob(SV *self, SV *varname)
278 name = newSVsv(_get_name(self));
279 sv_catpvs(name, "::");
280 sv_catsv(name, varname);
282 /* can't use gv_init here, because it screws up @ISA in a way that I
283 * can't reproduce, but that CMOP triggers */
284 gv_fetchsv(name, GV_ADD, SVt_NULL);
288 SV *_get_symbol(SV *self, varspec_t *variable, int vivify)
294 namespace = _get_namespace(self);
295 entry = hv_fetch_ent(namespace, variable->name, vivify, 0);
299 glob = (GV*)(HeVAL(entry));
301 _expand_glob(self, variable->name);
304 switch (variable->type) {
307 GvSetSV(glob, newSV(0));
311 GvSetAV(glob, newAV());
315 GvSetHV(glob, newHV());
318 croak("Don't know how to vivify CODE variables");
321 GvSetIO(glob, newIO());
324 croak("Unknown type in vivication");
328 switch (variable->type) {
332 return (SV*)GvAV(glob);
334 return (SV*)GvHV(glob);
336 return (SV*)GvCV(glob);
338 return (SV*)GvIO(glob);
344 MODULE = Package::Stash::XS PACKAGE = Package::Stash::XS
349 new(class, package_name)
355 if (!SvPOK(package_name))
356 croak("The constructor argument must be the name of a package");
360 if (!hv_store(instance, "name", 4, SvREFCNT_inc_simple_NN(package_name), 0)) {
361 SvREFCNT_dec(package_name);
362 SvREFCNT_dec(instance);
363 croak("Couldn't initialize the 'name' key, hv_store failed");
366 RETVAL = sv_bless(newRV_noinc((SV*)instance), gv_stashsv(class, 0));
376 if (!sv_isobject(self))
377 croak("Can't call name as a class method");
378 slot = hv_fetch_ent((HV*)SvRV(self), name_key, 0, name_hash);
379 RETVAL = slot ? SvREFCNT_inc_simple_NN(HeVAL(slot)) : &PL_sv_undef;
390 if (!sv_isobject(self))
391 croak("Can't call namespace as a class method");
392 #if PERL_VERSION < 10
393 package_name = _get_name(self);
394 RETVAL = newRV_inc((SV*)gv_stashpv(SvPV_nolen(package_name), GV_ADD));
396 slot = hv_fetch_ent((HV*)SvRV(self), namespace_key, 0, namespace_hash);
398 RETVAL = SvREFCNT_inc_simple_NN(HeVAL(slot));
404 package_name = _get_name(self);
405 namespace = gv_stashpv(SvPV_nolen(package_name), GV_ADD);
406 nsref = newRV_inc((SV*)namespace);
408 if (!hv_store((HV*)SvRV(self), "namespace", 9, nsref, 0)) {
411 croak("Couldn't initialize the 'namespace' key, hv_store failed");
413 RETVAL = SvREFCNT_inc_simple_NN(nsref);
420 add_symbol(self, variable, initial=NULL, ...)
428 if (initial && !_valid_for_type(initial, variable.type))
429 croak("%s is not of type %s",
430 SvPV_nolen(initial), vartype_to_string(variable.type));
432 name = newSVsv(_get_name(self));
433 sv_catpvs(name, "::");
434 sv_catsv(name, variable.name);
436 if (items > 2 && (PL_perldb & 0x10) && variable.type == VAR_CODE) {
438 char *filename = NULL;
439 I32 first_line_num = -1, last_line_num = -1;
445 croak("add_symbol: Odd number of elements in %%opts");
447 for (i = 3; i < items; i += 2) {
449 key = SvPV_nolen(ST(i));
450 if (strEQ(key, "filename")) {
451 if (!SvPOK(ST(i + 1)))
452 croak("add_symbol: filename must be a string");
453 filename = SvPV_nolen(ST(i + 1));
455 else if (strEQ(key, "first_line_num")) {
456 if (!SvIOK(ST(i + 1)))
457 croak("add_symbol: first_line_num must be an integer");
458 first_line_num = SvIV(ST(i + 1));
460 else if (strEQ(key, "last_line_num")) {
461 if (!SvIOK(ST(i + 1)))
462 croak("add_symbol: last_line_num must be an integer");
463 last_line_num = SvIV(ST(i + 1));
467 if (!filename || first_line_num == -1) {
469 filename = CopFILE(PL_curcop);
470 if (first_line_num == -1)
471 first_line_num = PL_curcop->cop_line;
474 if (last_line_num == -1)
475 last_line_num = first_line_num;
477 /* http://perldoc.perl.org/perldebguts.html#Debugger-Internals */
478 dbsub = get_hv("DB::sub", 1);
479 dbval = newSVpvf("%s:%d-%d", filename, first_line_num, last_line_num);
480 if (!hv_store_ent(dbsub, name, dbval, 0)) {
481 warn("Failed to update $DB::sub for subroutine %s",
487 /* GV_ADDMULTI rather than GV_ADD because otherwise you get 'used only
488 * once' warnings in some situations... i can't reproduce this, but CMOP
490 glob = gv_fetchsv(name, GV_ADDMULTI, vartype_to_svtype(variable.type));
495 if (SvROK(initial)) {
497 SvREFCNT_inc_simple_void_NN(val);
500 val = newSVsv(initial);
503 switch (variable.type) {
525 remove_glob(self, name)
529 hv_delete_ent(_get_namespace(self), name, G_DISCARD, 0);
532 has_symbol(self, variable)
540 namespace = _get_namespace(self);
541 entry = hv_fetch_ent(namespace, variable.name, 0, 0);
548 switch (variable.type) {
550 RETVAL = GvSVOK(glob) ? 1 : 0;
553 RETVAL = GvAVOK(glob) ? 1 : 0;
556 RETVAL = GvHVOK(glob) ? 1 : 0;
559 RETVAL = GvCVOK(glob) ? 1 : 0;
562 RETVAL = GvIOOK(glob) ? 1 : 0;
567 RETVAL = (variable.type == VAR_CODE);
573 get_symbol(self, variable)
579 val = _get_symbol(self, &variable, 0);
582 RETVAL = newRV_inc(val);
587 get_or_add_symbol(self, variable)
593 val = _get_symbol(self, &variable, 1);
596 RETVAL = newRV_inc(val);
601 remove_symbol(self, variable)
609 namespace = _get_namespace(self);
610 entry = hv_fetch_ent(namespace, variable.name, 0, 0);
617 switch (variable.type) {
636 if (variable.type == VAR_CODE) {
637 hv_delete_ent(namespace, variable.name, G_DISCARD, 0);
642 list_all_symbols(self, vartype=VAR_NONE)
646 if (vartype == VAR_NONE) {
651 namespace = _get_namespace(self);
652 keys = hv_iterinit(namespace);
654 while ((entry = hv_iternext(namespace))) {
655 mPUSHs(newSVhe(entry));
664 namespace = _get_namespace(self);
665 hv_iterinit(namespace);
666 while ((val = hv_iternextsv(namespace, &key, &len))) {
692 else if (vartype == VAR_CODE) {
699 get_all_symbols(self, vartype=VAR_NONE)
708 namespace = _get_namespace(self);
711 hv_iterinit(namespace);
712 while ((val = hv_iternextsv(namespace, &key, &len))) {
716 SV *keysv = newSVpvn(key, len);
717 _expand_glob(self, keysv);
724 hv_store(ret, key, len, newRV_inc(GvSV(gv)), 0);
728 hv_store(ret, key, len, newRV_inc((SV*)GvAV(gv)), 0);
732 hv_store(ret, key, len, newRV_inc((SV*)GvHV(gv)), 0);
736 hv_store(ret, key, len, newRV_inc((SV*)GvCV(gv)), 0);
740 hv_store(ret, key, len, newRV_inc((SV*)GvIO(gv)), 0);
743 hv_store(ret, key, len, SvREFCNT_inc_simple_NN(val), 0);
748 mPUSHs(newRV_noinc((SV*)ret));
752 name_key = newSVpvs("name");
753 PERL_HASH(name_hash, "name", 4);
755 namespace_key = newSVpvs("namespace");
756 PERL_HASH(namespace_hash, "namespace", 9);
758 type_key = newSVpvs("type");
759 PERL_HASH(type_hash, "type", 4);