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))
27 /* HACK: scalar slots are always populated on perl < 5.10, so treat undef
28 * as nonexistent. this is consistent with the previous behavior of the pure
29 * perl version of this module (since this is the behavior that perl sees
32 #define GvSVOK(g) (GvSV(g) && SvTYPE(GvSV(g)) != SVt_NULL)
34 #define GvSVOK(g) GvSV(g)
37 #define GvAVOK(g) GvAV(g)
38 #define GvHVOK(g) GvHV(g)
39 #define GvCVOK(g) GvCVu(g) /* XXX: should this really be GvCVu? or GvCV? */
40 #define GvIOOK(g) GvIO(g)
42 /* see above - don't let scalar slots become unpopulated, this breaks
43 * assumptions in core */
45 #define GvSetSV(g,v) do { \
47 SvREFCNT_dec(GvSV(g)); \
48 if ((GvSV(g) = _v ? _v : newSV(0))) \
49 GvIMPORTED_SV_on(g); \
52 #define GvSetSV(g,v) do { \
53 SvREFCNT_dec(GvSV(g)); \
54 if ((GvSV(g) = (SV*)(v))) \
55 GvIMPORTED_SV_on(g); \
59 #define GvSetAV(g,v) do { \
60 SvREFCNT_dec(GvAV(g)); \
61 if ((GvAV(g) = (AV*)(v))) \
62 GvIMPORTED_AV_on(g); \
64 #define GvSetHV(g,v) do { \
65 SvREFCNT_dec(GvHV(g)); \
66 if ((GvHV(g) = (HV*)(v))) \
67 GvIMPORTED_HV_on(g); \
69 #define GvSetCV(g,v) do { \
70 SvREFCNT_dec(GvCV(g)); \
71 if ((GvCV(g) = (CV*)(v))) { \
72 GvIMPORTED_CV_on(g); \
76 mro_method_changed_in(GvSTASH(g)); \
78 #define GvSetIO(g,v) do { \
79 SvREFCNT_dec(GvIO(g)); \
80 GvIOp(g) = (IO*)(v); \
83 /* XXX: the core implementation of caller() is private, so we need a
84 * a reimplementation. luckily, padwalker already has done this. rafl says
85 * that there should be a public interface in 5.14, so maybe look into
86 * converting to use that at some point */
87 #include "stolen_bits_of_padwalker.c"
96 VAR_GLOB, /* TODO: unimplemented */
97 VAR_FORMAT /* TODO: unimplemented */
105 const char *vartype_to_string(vartype_t type)
123 I32 vartype_to_svtype(vartype_t type)
127 return SVt_PV; /* or whatever */
141 vartype_t string_to_vartype(char *vartype)
143 if (strEQ(vartype, "SCALAR")) {
146 else if (strEQ(vartype, "ARRAY")) {
149 else if (strEQ(vartype, "HASH")) {
152 else if (strEQ(vartype, "CODE")) {
155 else if (strEQ(vartype, "IO")) {
159 croak("Type must be one of 'SCALAR', 'ARRAY', 'HASH', 'CODE', or 'IO'");
163 void _deconstruct_variable_name(char *variable, varspec_t *varspec)
165 if (!variable || !variable[0])
166 croak("You must pass a variable name");
168 varspec->type = VAR_NONE;
170 switch (variable[0]) {
172 varspec->type = VAR_SCALAR;
175 varspec->type = VAR_ARRAY;
178 varspec->type = VAR_HASH;
181 varspec->type = VAR_CODE;
185 if (varspec->type != VAR_NONE) {
186 varspec->name = &variable[1];
189 varspec->type = VAR_IO;
190 varspec->name = variable;
194 void _deconstruct_variable_hash(HV *variable, varspec_t *varspec)
198 val = hv_fetch(variable, "name", 4, 0);
200 croak("The 'name' key is required in variable specs");
202 varspec->name = savesvpv(*val);
203 SAVEFREEPV(varspec->name);
205 val = hv_fetch(variable, "type", 4, 0);
207 croak("The 'type' key is required in variable specs");
209 varspec->type = string_to_vartype(SvPV_nolen(*val));
212 int _valid_for_type(SV *value, vartype_t type)
214 svtype sv_type = SvROK(value) ? SvTYPE(SvRV(value)) : SVt_NULL;
218 return sv_type == SVt_NULL ||
224 return sv_type == SVt_PVAV;
226 return sv_type == SVt_PVHV;
228 return sv_type == SVt_PVCV;
230 return sv_type == SVt_PVIO;
236 HV *_get_namespace(SV *self)
245 call_method("namespace", G_SCALAR);
251 return (HV*)SvRV(ret);
254 SV *_get_name(SV *self)
263 call_method("name", G_SCALAR);
272 SV *_get_symbol(SV *self, varspec_t *variable, int vivify)
278 namespace = _get_namespace(self);
279 entry = hv_fetch(namespace, variable->name, strlen(variable->name), vivify);
283 glob = (GV*)(*entry);
287 namesv = newSVsv(_get_name(self));
288 sv_catpvs(namesv, "::");
289 sv_catpv(namesv, variable->name);
291 /* can't use gv_init here, because it screws up @ISA in a way that I
292 * can't reproduce, but that CMOP triggers */
293 gv_fetchsv(namesv, GV_ADD, vartype_to_svtype(variable->type));
294 SvREFCNT_dec(namesv);
298 switch (variable->type) {
301 GvSetSV(glob, newSV(0));
305 GvSetAV(glob, newAV());
309 GvSetHV(glob, newHV());
312 croak("Don't know how to vivify CODE variables");
315 GvSetIO(glob, newIO());
318 croak("Unknown type in vivication");
322 switch (variable->type) {
326 return (SV*)GvAV(glob);
328 return (SV*)GvHV(glob);
330 return (SV*)GvCV(glob);
332 return (SV*)GvIO(glob);
338 MODULE = Package::Stash PACKAGE = Package::Stash
343 new(class, package_name)
351 if (!SvPOK(package_name))
352 croak("The constructor argument must be the name of a package");
356 if (!hv_store(instance, "name", 4, SvREFCNT_inc_simple_NN(package_name), 0)) {
357 SvREFCNT_dec(package_name);
358 SvREFCNT_dec(instance);
359 croak("Couldn't initialize the 'name' key, hv_store failed");
361 namespace = gv_stashpv(SvPV_nolen(package_name), GV_ADD);
362 nsref = newRV_inc((SV*)namespace);
363 if (!hv_store(instance, "namespace", 9, nsref, 0)) {
365 SvREFCNT_dec(instance);
366 croak("Couldn't initialize the 'namespace' key, hv_store failed");
369 RETVAL = sv_bless(newRV_noinc((SV*)instance), gv_stashpv(class, 0));
379 if (!sv_isobject(self))
380 croak("Can't call name as a class method");
381 slot = hv_fetch((HV*)SvRV(self), "name", 4, 0);
382 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
392 if (!sv_isobject(self))
393 croak("Can't call namespace as a class method");
394 slot = hv_fetch((HV*)SvRV(self), "namespace", 9, 0);
395 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
400 add_symbol(self, variable, initial=NULL, ...)
408 if (initial && !_valid_for_type(initial, variable.type))
409 croak("%s is not of type %s",
410 SvPV_nolen(initial), vartype_to_string(variable.type));
412 name = newSVsv(_get_name(self));
413 sv_catpvs(name, "::");
414 sv_catpv(name, variable.name);
416 if (items > 2 && (PL_perldb & 0x10) && variable.type == VAR_CODE) {
418 char *filename = NULL, *namepv;
419 I32 first_line_num = -1, last_line_num = -1;
425 croak("add_symbol: Odd number of elements in %%opts");
427 for (i = 3; i < items; i += 2) {
429 key = SvPV_nolen(ST(i));
430 if (strEQ(key, "filename")) {
431 if (!SvPOK(ST(i + 1)))
432 croak("add_symbol: filename must be a string");
433 filename = SvPV_nolen(ST(i + 1));
435 else if (strEQ(key, "first_line_num")) {
436 if (!SvIOK(ST(i + 1)))
437 croak("add_symbol: first_line_num must be an integer");
438 first_line_num = SvIV(ST(i + 1));
440 else if (strEQ(key, "last_line_num")) {
441 if (!SvIOK(ST(i + 1)))
442 croak("add_symbol: last_line_num must be an integer");
443 last_line_num = SvIV(ST(i + 1));
447 if (!filename || first_line_num == -1) {
448 I32 cxix_from, cxix_to;
449 PERL_CONTEXT *cx, *ccstack;
452 cx = upcontext(0, &cop, &ccstack, &cxix_from, &cxix_to);
457 filename = CopFILE(cop);
458 if (first_line_num == -1)
459 first_line_num = cop->cop_line;
462 if (last_line_num == -1)
463 last_line_num = first_line_num;
465 /* http://perldoc.perl.org/perldebguts.html#Debugger-Internals */
466 dbsub = get_hv("DB::sub", 1);
467 dbval = newSVpvf("%s:%d-%d", filename, first_line_num, last_line_num);
468 namepv = SvPV(name, namelen);
469 if (!hv_store(dbsub, namepv, namelen, dbval, 0)) {
470 warn("Failed to update $DB::sub for subroutine %s", namepv);
475 /* GV_ADDMULTI rather than GV_ADD because otherwise you get 'used only
476 * once' warnings in some situations... i can't reproduce this, but CMOP
478 glob = gv_fetchsv(name, GV_ADDMULTI, vartype_to_svtype(variable.type));
483 if (SvROK(initial)) {
485 SvREFCNT_inc_simple_void_NN(val);
488 val = newSVsv(initial);
491 switch (variable.type) {
513 remove_glob(self, name)
517 hv_delete(_get_namespace(self), name, strlen(name), G_DISCARD);
520 has_symbol(self, variable)
527 namespace = _get_namespace(self);
528 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
533 GV *glob = (GV*)(*entry);
534 switch (variable.type) {
536 RETVAL = GvSVOK(glob) ? 1 : 0;
539 RETVAL = GvAVOK(glob) ? 1 : 0;
542 RETVAL = GvHVOK(glob) ? 1 : 0;
545 RETVAL = GvCVOK(glob) ? 1 : 0;
548 RETVAL = GvIOOK(glob) ? 1 : 0;
553 RETVAL = (variable.type == VAR_CODE);
559 get_symbol(self, variable)
565 val = _get_symbol(self, &variable, 0);
568 RETVAL = newRV_inc(val);
573 get_or_add_symbol(self, variable)
579 val = _get_symbol(self, &variable, 1);
582 RETVAL = newRV_inc(val);
587 remove_symbol(self, variable)
594 namespace = _get_namespace(self);
595 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
600 GV *glob = (GV*)(*entry);
601 switch (variable.type) {
620 if (variable.type == VAR_CODE) {
621 hv_delete(namespace, variable.name, strlen(variable.name), G_DISCARD);
626 list_all_symbols(self, vartype=VAR_NONE)
630 if (vartype == VAR_NONE) {
635 namespace = _get_namespace(self);
636 keys = hv_iterinit(namespace);
638 while ((entry = hv_iternext(namespace))) {
639 mPUSHs(newSVhe(entry));
648 namespace = _get_namespace(self);
649 hv_iterinit(namespace);
650 while ((val = hv_iternextsv(namespace, &key, &len))) {
676 else if (vartype == VAR_CODE) {