5 #define NEED_newRV_noinc
6 #define NEED_sv_2pv_flags
16 VAR_GLOB, /* TODO: unimplemented */
17 VAR_FORMAT /* TODO: unimplemented */
26 const char *vartype_to_string(vartype_t type)
44 I32 vartype_to_svtype(vartype_t type)
48 return SVt_PV; /* or whatever */
62 vartype_t string_to_vartype(char *vartype)
64 if (strEQ(vartype, "SCALAR")) {
67 else if (strEQ(vartype, "ARRAY")) {
70 else if (strEQ(vartype, "HASH")) {
73 else if (strEQ(vartype, "CODE")) {
76 else if (strEQ(vartype, "IO")) {
80 croak("Type must be one of 'SCALAR', 'ARRAY', 'HASH', 'CODE', or 'IO'");
84 void _deconstruct_variable_name(char *variable, varspec_t *varspec)
86 if (!variable || !variable[0])
87 croak("You must pass a variable name");
89 varspec->type = VAR_NONE;
91 switch (variable[0]) {
93 varspec->type = VAR_SCALAR;
96 varspec->type = VAR_ARRAY;
99 varspec->type = VAR_HASH;
102 varspec->type = VAR_CODE;
106 if (varspec->type != VAR_NONE) {
107 varspec->sigil = variable[0];
108 varspec->name = &variable[1];
111 varspec->type = VAR_IO;
112 varspec->sigil = '\0';
113 varspec->name = variable;
117 void _deconstruct_variable_hash(HV *variable, varspec_t *varspec)
121 val = hv_fetch(variable, "name", 4, 0);
123 croak("The 'name' key is required in variable specs");
125 varspec->name = savesvpv(*val);
126 SAVEFREEPV(varspec->name);
128 val = hv_fetch(variable, "sigil", 5, 0);
130 croak("The 'sigil' key is required in variable specs");
132 varspec->sigil = (SvPV_nolen(*val))[0];
134 val = hv_fetch(variable, "type", 4, 0);
136 croak("The 'type' key is required in variable specs");
138 varspec->type = string_to_vartype(SvPV_nolen(*val));
141 int _valid_for_type(SV *value, vartype_t type)
143 svtype sv_type = SvROK(value) ? SvTYPE(SvRV(value)) : SVt_NULL;
147 return sv_type == SVt_NULL ||
153 return sv_type == SVt_PVAV;
155 return sv_type == SVt_PVHV;
157 return sv_type == SVt_PVCV;
159 return sv_type == SVt_PVIO;
165 HV *_get_namespace(SV *self)
174 call_method("namespace", G_SCALAR);
180 return (HV*)SvRV(ret);
183 SV *_get_name(SV *self)
192 call_method("name", G_SCALAR);
201 SV *_get_package_symbol(SV *self, varspec_t *variable, int vivify)
207 namespace = _get_namespace(self);
208 entry = hv_fetch(namespace, variable->name, strlen(variable->name), vivify);
212 glob = (GV*)(*entry);
216 namesv = newSVsv(_get_name(self));
217 sv_catpvs(namesv, "::");
218 sv_catpv(namesv, variable->name);
220 /* can't use gv_init here, because it screws up @ISA in a way that I
221 * can't reproduce, but that CMOP triggers */
222 gv_fetchsv(namesv, GV_ADD, vartype_to_svtype(variable->type));
223 SvREFCNT_dec(namesv);
227 switch (variable->type) {
230 GvSV(glob) = newSV(0);
234 GvAV(glob) = newAV();
238 GvHV(glob) = newHV();
241 croak("Don't know how to vivify CODE variables");
244 GvIOp(glob) = newIO();
247 croak("Unknown type in vivication");
251 switch (variable->type) {
255 return (SV*)GvAV(glob);
257 return (SV*)GvHV(glob);
259 return (SV*)GvCV(glob);
261 return (SV*)GvIO(glob);
267 MODULE = Package::Stash PACKAGE = Package::Stash
272 new(class, package_name)
280 if (!SvPOK(package_name))
281 croak("The constructor argument must be the name of a package");
285 if (!hv_store(instance, "name", 4, SvREFCNT_inc_simple_NN(package_name), 0)) {
286 SvREFCNT_dec(package_name);
287 SvREFCNT_dec(instance);
288 croak("Couldn't initialize the 'name' key, hv_store failed");
290 namespace = gv_stashpv(SvPV_nolen(package_name), GV_ADD);
291 nsref = newRV_inc((SV*)namespace);
292 if (!hv_store(instance, "namespace", 9, nsref, 0)) {
294 SvREFCNT_dec(instance);
295 croak("Couldn't initialize the 'namespace' key, hv_store failed");
298 RETVAL = sv_bless(newRV_noinc((SV*)instance), gv_stashpv(class, 0));
308 if (!sv_isobject(self))
309 croak("Can't call name as a class method");
310 slot = hv_fetch((HV*)SvRV(self), "name", 4, 0);
311 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
321 if (!sv_isobject(self))
322 croak("Can't call namespace as a class method");
323 slot = hv_fetch((HV*)SvRV(self), "namespace", 9, 0);
324 RETVAL = slot ? SvREFCNT_inc_simple_NN(*slot) : &PL_sv_undef;
329 add_package_symbol(self, variable, initial=NULL, ...)
337 if (initial && !_valid_for_type(initial, variable.type))
338 croak("%s is not of type %s",
339 SvPV_nolen(initial), vartype_to_string(variable.type));
341 name = newSVsv(_get_name(self));
342 sv_catpvs(name, "::");
343 sv_catpv(name, variable.name);
345 /* XXX: come back to this when i feel like reimplementing caller() */
347 my $filename = $opts{filename};
348 my $first_line_num = $opts{first_line_num};
350 (undef, $filename, $first_line_num) = caller
351 if not defined $filename;
353 my $last_line_num = $opts{last_line_num} || ($first_line_num ||= 0);
355 # http://perldoc.perl.org/perldebguts.html#Debugger-Internals
356 $DB::sub{$pkg . '::' . $name} = "$filename:$first_line_num-$last_line_num";
359 if (items > 2 && (PL_perldb & 0x10) && variable.type == VAR_CODE) {
361 char *filename = NULL, *name;
362 I32 first_line_num, last_line_num;
365 croak("add_package_symbol: Odd number of elements in %%opts");
367 for (i = 3; i < items; i += 2) {
369 key = SvPV_nolen(ST(i));
370 if (strEQ(key, "filename")) {
371 if (!SvPOK(ST(i + 1)))
372 croak("add_package_symbol: filename must be a string");
373 filename = SvPV_nolen(ST(i + 1));
375 else if (strEQ(key, "first_line_num")) {
376 if (!SvIOK(ST(i + 1)))
377 croak("add_package_symbol: first_line_num must be an integer");
378 first_line_num = SvIV(ST(i + 1));
380 else if (strEQ(key, "last_line_num")) {
381 if (!SvIOK(ST(i + 1)))
382 croak("add_package_symbol: last_line_num must be an integer");
383 last_line_num = SvIV(ST(i + 1));
392 glob = gv_fetchsv(name, GV_ADDMULTI, vartype_to_svtype(variable.type));
397 if (SvROK(initial)) {
399 SvREFCNT_inc_simple_void_NN(val);
402 val = newSVsv(initial);
405 switch (variable.type) {
407 SvREFCNT_dec(GvSV(glob));
409 GvIMPORTED_SV_on(glob);
412 SvREFCNT_dec(GvAV(glob));
413 GvAV(glob) = (AV*)val;
414 GvIMPORTED_AV_on(glob);
417 SvREFCNT_dec(GvHV(glob));
418 GvHV(glob) = (HV*)val;
419 GvIMPORTED_HV_on(glob);
422 SvREFCNT_dec(GvCV(glob));
423 GvCV(glob) = (CV*)val;
424 GvIMPORTED_CV_on(glob);
427 mro_method_changed_in(GvSTASH(glob));
430 SvREFCNT_dec(GvIO(glob));
431 GvIOp(glob) = (IO*)val;
439 remove_package_glob(self, name)
443 hv_delete(_get_namespace(self), name, strlen(name), G_DISCARD);
446 has_package_symbol(self, variable)
453 namespace = _get_namespace(self);
454 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
459 GV *glob = (GV*)(*entry);
460 switch (variable.type) {
462 RETVAL = GvSV(glob) ? 1 : 0;
465 RETVAL = GvAV(glob) ? 1 : 0;
468 RETVAL = GvHV(glob) ? 1 : 0;
471 RETVAL = GvCV(glob) ? 1 : 0;
474 RETVAL = GvIO(glob) ? 1 : 0;
479 RETVAL = (variable.type == VAR_CODE);
485 get_package_symbol(self, variable)
491 val = _get_package_symbol(self, &variable, 0);
494 RETVAL = newRV_inc(val);
499 get_or_add_package_symbol(self, variable)
505 val = _get_package_symbol(self, &variable, 1);
508 RETVAL = newRV_inc(val);
513 remove_package_symbol(self, variable)
520 namespace = _get_namespace(self);
521 entry = hv_fetch(namespace, variable.name, strlen(variable.name), 0);
526 GV *glob = (GV*)(*entry);
527 switch (variable.type) {
529 GvSV(glob) = (SV *)NULL;
532 GvAV(glob) = (AV *)NULL;
535 GvHV(glob) = (HV *)NULL;
538 GvCV(glob) = (CV *)NULL;
540 mro_method_changed_in(GvSTASH(glob));
543 GvIOp(glob) = (IO *)NULL;
548 if (variable.type == VAR_CODE) {
549 hv_delete(namespace, variable.name, strlen(variable.name), G_DISCARD);
554 list_all_package_symbols(self, vartype=VAR_NONE)
558 if (vartype == VAR_NONE) {
563 namespace = _get_namespace(self);
564 keys = hv_iterinit(namespace);
566 while ((entry = hv_iternext(namespace))) {
567 mPUSHs(newSVhek(HeKEY_hek(entry)));
576 namespace = _get_namespace(self);
577 hv_iterinit(namespace);
578 while ((val = hv_iternextsv(namespace, &key, &len))) {
604 else if (vartype == VAR_CODE) {