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); \
90 VAR_GLOB, /* TODO: unimplemented */
91 VAR_FORMAT /* TODO: unimplemented */
100 const char *vartype_to_string(vartype_t type)
118 I32 vartype_to_svtype(vartype_t type)
122 return SVt_PV; /* or whatever */
136 vartype_t string_to_vartype(char *vartype)
138 if (strEQ(vartype, "SCALAR")) {
141 else if (strEQ(vartype, "ARRAY")) {
144 else if (strEQ(vartype, "HASH")) {
147 else if (strEQ(vartype, "CODE")) {
150 else if (strEQ(vartype, "IO")) {
154 croak("Type must be one of 'SCALAR', 'ARRAY', 'HASH', 'CODE', or 'IO'");
158 void _deconstruct_variable_name(char *variable, varspec_t *varspec)
160 if (!variable || !variable[0])
161 croak("You must pass a variable name");
163 varspec->type = VAR_NONE;
165 switch (variable[0]) {
167 varspec->type = VAR_SCALAR;
170 varspec->type = VAR_ARRAY;
173 varspec->type = VAR_HASH;
176 varspec->type = VAR_CODE;
180 if (varspec->type != VAR_NONE) {
181 varspec->sigil = variable[0];
182 varspec->name = &variable[1];
185 varspec->type = VAR_IO;
186 varspec->sigil = '\0';
187 varspec->name = variable;
191 void _deconstruct_variable_hash(HV *variable, varspec_t *varspec)
195 val = hv_fetch(variable, "name", 4, 0);
197 croak("The 'name' key is required in variable specs");
199 varspec->name = savesvpv(*val);
200 SAVEFREEPV(varspec->name);
202 val = hv_fetch(variable, "sigil", 5, 0);
204 croak("The 'sigil' key is required in variable specs");
206 varspec->sigil = (SvPV_nolen(*val))[0];
208 val = hv_fetch(variable, "type", 4, 0);
210 croak("The 'type' key is required in variable specs");
212 varspec->type = string_to_vartype(SvPV_nolen(*val));
215 int _valid_for_type(SV *value, vartype_t type)
217 svtype sv_type = SvROK(value) ? SvTYPE(SvRV(value)) : SVt_NULL;
221 return sv_type == SVt_NULL ||
227 return sv_type == SVt_PVAV;
229 return sv_type == SVt_PVHV;
231 return sv_type == SVt_PVCV;
233 return sv_type == SVt_PVIO;
239 HV *_get_namespace(SV *self)
248 call_method("namespace", G_SCALAR);
254 return (HV*)SvRV(ret);
257 SV *_get_name(SV *self)
266 call_method("name", G_SCALAR);
275 SV *_get_symbol(SV *self, varspec_t *variable, int vivify)
281 namespace = _get_namespace(self);
282 entry = hv_fetch(namespace, variable->name, strlen(variable->name), vivify);
286 glob = (GV*)(*entry);
290 namesv = newSVsv(_get_name(self));
291 sv_catpvs(namesv, "::");
292 sv_catpv(namesv, variable->name);
294 /* can't use gv_init here, because it screws up @ISA in a way that I
295 * can't reproduce, but that CMOP triggers */
296 gv_fetchsv(namesv, GV_ADD, vartype_to_svtype(variable->type));
297 SvREFCNT_dec(namesv);
301 switch (variable->type) {
304 GvSetSV(glob, newSV(0));
308 GvSetAV(glob, newAV());
312 GvSetHV(glob, newHV());
315 croak("Don't know how to vivify CODE variables");
318 GvSetIO(glob, newIO());
321 croak("Unknown type in vivication");
325 switch (variable->type) {
329 return (SV*)GvAV(glob);
331 return (SV*)GvHV(glob);
333 return (SV*)GvCV(glob);
335 return (SV*)GvIO(glob);
341 MODULE = Package::Stash PACKAGE = Package::Stash
346 new(class, package_name)
354 if (!SvPOK(package_name))
355 croak("The constructor argument must be the name of a package");
359 if (!hv_store(instance, "name", 4, SvREFCNT_inc_simple_NN(package_name), 0)) {
360 SvREFCNT_dec(package_name);
361 SvREFCNT_dec(instance);
362 croak("Couldn't initialize the 'name' key, hv_store failed");
364 namespace = gv_stashpv(SvPV_nolen(package_name), GV_ADD);
365 nsref = newRV_inc((SV*)namespace);
366 if (!hv_store(instance, "namespace", 9, nsref, 0)) {
368 SvREFCNT_dec(instance);
369 croak("Couldn't initialize the 'namespace' key, hv_store failed");
372 RETVAL = sv_bless(newRV_noinc((SV*)instance), gv_stashpv(class, 0));
382 if (!sv_isobject(self))
383 croak("Can't call name as a class method");
384 slot = hv_fetch((HV*)SvRV(self), "name", 4, 0);
385 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
395 if (!sv_isobject(self))
396 croak("Can't call namespace as a class method");
397 slot = hv_fetch((HV*)SvRV(self), "namespace", 9, 0);
398 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
403 add_symbol(self, variable, initial=NULL, ...)
411 if (initial && !_valid_for_type(initial, variable.type))
412 croak("%s is not of type %s",
413 SvPV_nolen(initial), vartype_to_string(variable.type));
415 name = newSVsv(_get_name(self));
416 sv_catpvs(name, "::");
417 sv_catpv(name, variable.name);
419 /* XXX: come back to this when i feel like reimplementing caller() */
421 my $filename = $opts{filename};
422 my $first_line_num = $opts{first_line_num};
424 (undef, $filename, $first_line_num) = caller
425 if not defined $filename;
427 my $last_line_num = $opts{last_line_num} || ($first_line_num ||= 0);
429 # http://perldoc.perl.org/perldebguts.html#Debugger-Internals
430 $DB::sub{$pkg . '::' . $name} = "$filename:$first_line_num-$last_line_num";
433 if (items > 2 && (PL_perldb & 0x10) && variable.type == VAR_CODE) {
435 char *filename = NULL, *name;
436 I32 first_line_num, last_line_num;
439 croak("add_symbol: Odd number of elements in %%opts");
441 for (i = 3; i < items; i += 2) {
443 key = SvPV_nolen(ST(i));
444 if (strEQ(key, "filename")) {
445 if (!SvPOK(ST(i + 1)))
446 croak("add_symbol: filename must be a string");
447 filename = SvPV_nolen(ST(i + 1));
449 else if (strEQ(key, "first_line_num")) {
450 if (!SvIOK(ST(i + 1)))
451 croak("add_symbol: first_line_num must be an integer");
452 first_line_num = SvIV(ST(i + 1));
454 else if (strEQ(key, "last_line_num")) {
455 if (!SvIOK(ST(i + 1)))
456 croak("add_symbol: last_line_num must be an integer");
457 last_line_num = SvIV(ST(i + 1));
466 /* GV_ADDMULTI rather than GV_ADD because otherwise you get 'used only
467 * once' warnings in some situations... i can't reproduce this, but CMOP
469 glob = gv_fetchsv(name, GV_ADDMULTI, vartype_to_svtype(variable.type));
474 if (SvROK(initial)) {
476 SvREFCNT_inc_simple_void_NN(val);
479 val = newSVsv(initial);
482 switch (variable.type) {
504 remove_glob(self, name)
508 hv_delete(_get_namespace(self), name, strlen(name), G_DISCARD);
511 has_symbol(self, variable)
518 namespace = _get_namespace(self);
519 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
524 GV *glob = (GV*)(*entry);
525 switch (variable.type) {
527 RETVAL = GvSVOK(glob) ? 1 : 0;
530 RETVAL = GvAVOK(glob) ? 1 : 0;
533 RETVAL = GvHVOK(glob) ? 1 : 0;
536 RETVAL = GvCVOK(glob) ? 1 : 0;
539 RETVAL = GvIOOK(glob) ? 1 : 0;
544 RETVAL = (variable.type == VAR_CODE);
550 get_symbol(self, variable)
556 val = _get_symbol(self, &variable, 0);
559 RETVAL = newRV_inc(val);
564 get_or_add_symbol(self, variable)
570 val = _get_symbol(self, &variable, 1);
573 RETVAL = newRV_inc(val);
578 remove_symbol(self, variable)
585 namespace = _get_namespace(self);
586 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
591 GV *glob = (GV*)(*entry);
592 switch (variable.type) {
611 if (variable.type == VAR_CODE) {
612 hv_delete(namespace, variable.name, strlen(variable.name), G_DISCARD);
617 list_all_symbols(self, vartype=VAR_NONE)
621 if (vartype == VAR_NONE) {
626 namespace = _get_namespace(self);
627 keys = hv_iterinit(namespace);
629 while ((entry = hv_iternext(namespace))) {
630 mPUSHs(newSVhe(entry));
639 namespace = _get_namespace(self);
640 hv_iterinit(namespace);
641 while ((val = hv_iternextsv(namespace, &key, &len))) {
667 else if (vartype == VAR_CODE) {