+
#include "mop.h"
-
static void
+mop_deconstruct_variable_name(pTHX_ SV* const variable,
+ const char** const var_name, STRLEN* const var_name_len,
+ svtype* const type,
+ const char** const type_name) {
+
+
+ if(SvROK(variable) && SvTYPE(SvRV(variable)) == SVt_PVHV){
+ /* e.g. variable = { type => "SCALAR", name => "foo" } */
+ HV* const hv = (HV*)SvRV(variable);
+ SV** svp;
+ STRLEN len;
+ const char* pv;
+
+ svp = hv_fetchs(hv, "name", FALSE);
+ if(!(svp && SvOK(*svp))){
+ croak("You must pass a variable name");
+ }
+ *var_name = SvPV_const(*svp, len);
+ *var_name_len = len;
+ if(len < 1){
+ croak("You must pass a variable name");
+ }
+
+ svp = hv_fetchs(hv, "type", FALSE);
+ if(!(svp && SvOK(*svp))) {
+ croak("You must pass a variable type");
+ }
+ pv = SvPV_nolen_const(*svp);
+ if(strEQ(pv, "SCALAR")){
+ *type = SVt_PV; /* for all the type of scalars */
+ }
+ else if(strEQ(pv, "ARRAY")){
+ *type = SVt_PVAV;
+ }
+ else if(strEQ(pv, "HASH")){
+ *type = SVt_PVHV;
+ }
+ else if(strEQ(pv, "CODE")){
+ *type = SVt_PVCV;
+ }
+ else if(strEQ(pv, "GLOB")){
+ *type = SVt_PVGV;
+ }
+ else if(strEQ(pv, "IO")){
+ *type = SVt_PVIO;
+ }
+ else{
+ croak("I do not recognize that type '%s'", pv);
+ }
+ *type_name = pv;
+ }
+ else {
+ STRLEN len;
+ const char* pv;
+ /* e.g. variable = '$foo' */
+ if(!SvOK(variable)) {
+ croak("You must pass a variable name");
+ }
+ pv = SvPV_const(variable, len);
+ if(len < 2){
+ croak("You must pass a variable name including a sigil");
+ }
+
+ *var_name = pv + 1;
+ *var_name_len = len - 1;
+
+ switch(pv[0]){
+ case '$':
+ *type = SVt_PV; /* for all the types of scalars */
+ *type_name = "SCALAR";
+ break;
+ case '@':
+ *type = SVt_PVAV;
+ *type_name = "ARRAY";
+ break;
+ case '%':
+ *type = SVt_PVHV;
+ *type_name = "HASH";
+ break;
+ case '&':
+ *type = SVt_PVCV;
+ *type_name = "CODE";
+ break;
+ case '*':
+ *type = SVt_PVGV;
+ *type_name = "GLOB";
+ break;
+ default:
+ croak("I do not recognize that sigil '%c'", pv[0]);
+ }
+ }
+}
+
+static GV*
+mop_get_gv(pTHX_ SV* const self, svtype const type, const char* const var_name, I32 const var_name_len, I32 const flags){
+ SV* package_name;
+
+ if(!(flags & ~GV_NOADD_MASK)){ /* for shortcut fetching */
+ SV* const ns = mop_call0(aTHX_ self, mop_namespace);
+ GV** gvp;
+ if(!(SvROK(ns) && SvTYPE(SvRV(ns)) == SVt_PVHV)){
+ croak("namespace() did not return a hash reference");
+ }
+ gvp = (GV**)hv_fetch((HV*)SvRV(ns), var_name, var_name_len, FALSE);
+ if(gvp && isGV_with_GP(*gvp)){
+ return *gvp;
+ }
+ }
+
+ package_name = mop_call0(aTHX_ self, KEY_FOR(name));
+
+ if(!SvOK(package_name)){
+ croak("name() did not return a defined value");
+ }
+
+ return gv_fetchpv(Perl_form(aTHX_ "%"SVf"::%s", package_name, var_name), flags, type);
+}
+
+static SV*
+mop_gv_elem(pTHX_ GV* const gv, svtype const type, I32 const add){
+ SV* sv;
+
+ if(!gv){
+ return NULL;
+ }
+
+ assert(isGV_with_GP(gv));
+
+ switch(type){
+ case SVt_PVAV:
+ sv = (SV*)(add ? GvAVn(gv) : GvAV(gv));
+ break;
+ case SVt_PVHV:
+ sv = (SV*)(add ? GvHVn(gv) : GvHV(gv));
+ break;
+ case SVt_PVCV:
+ sv = (SV*)GvCV(gv);
+ break;
+ case SVt_PVIO:
+ sv = (SV*)(add ? GvIOn(gv) : GvIO(gv));
+ break;
+ case SVt_PVGV:
+ sv = (SV*)gv;
+ break;
+ default: /* SCALAR */
+ sv = add ? GvSVn(gv) : GvSV(gv);
+ break;
+ }
+
+ return sv;
+}
+
+
++static void
+ mop_update_method_map(pTHX_ SV *const self, SV *const class_name, HV *const stash, HV *const map)
+ {
+ const char *const class_name_pv = HvNAME(stash); /* must be HvNAME(stash), not SvPV_nolen_const(class_name) */
+ SV *method_metaclass_name;
+ char *method_name;
+ I32 method_name_len;
+ SV *coderef;
+ HV *symbols;
+ dSP;
+
+ symbols = mop_get_all_package_symbols(stash, TYPE_FILTER_CODE);
+ sv_2mortal((SV*)symbols);
+ (void)hv_iterinit(symbols);
+ while ( (coderef = hv_iternextsv(symbols, &method_name, &method_name_len)) ) {
+ CV *cv = (CV *)SvRV(coderef);
+ char *cvpkg_name;
+ char *cv_name;
+ SV *method_slot;
+ SV *method_object;
+
+ if (!mop_get_code_info(coderef, &cvpkg_name, &cv_name)) {
+ continue;
+ }
+
+ /* this checks to see that the subroutine is actually from our package */
+ if ( !(strEQ(cvpkg_name, "constant") && strEQ(cv_name, "__ANON__")) ) {
+ if ( strNE(cvpkg_name, class_name_pv) ) {
+ continue;
+ }
+ }
+
+ method_slot = *hv_fetch(map, method_name, method_name_len, TRUE);
+ if ( SvOK(method_slot) ) {
+ SV *const body = mop_call0(aTHX_ method_slot, KEY_FOR(body)); /* $method_object->body() */
+ if ( SvROK(body) && ((CV *) SvRV(body)) == cv ) {
+ continue;
+ }
+ }
+
+ method_metaclass_name = mop_call0(aTHX_ self, mop_method_metaclass); /* $self->method_metaclass() */
+
+ /*
+ $method_object = $method_metaclass->wrap(
+ $cv,
+ associated_metaclass => $self,
+ package_name => $class_name,
+ name => $method_name
+ );
+ */
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ EXTEND(SP, 8);
+ PUSHs(method_metaclass_name); /* invocant */
+ mPUSHs(newRV_inc((SV *)cv));
+ PUSHs(mop_associated_metaclass);
+ PUSHs(self);
+ PUSHs(KEY_FOR(package_name));
+ PUSHs(class_name);
+ PUSHs(KEY_FOR(name));
+ mPUSHs(newSVpv(method_name, method_name_len));
+ PUTBACK;
+
+ call_sv(mop_wrap, G_SCALAR | G_METHOD);
+ SPAGAIN;
+ method_object = POPs;
+ PUTBACK;
+ /* $map->{$method_name} = $method_object */
+ sv_setsv(method_slot, method_object);
+
+ FREETMPS;
+ LEAVE;
+ }
+ }
+
MODULE = Class::MOP::Package PACKAGE = Class::MOP::Package
PROTOTYPES: DISABLE
symbols = mop_get_all_package_symbols(stash, filter);
PUSHs(sv_2mortal(newRV_noinc((SV *)symbols)));
+ void
+ get_method_map(self)
+ SV *self
+ PREINIT:
+ HV *const obj = (HV *)SvRV(self);
+ SV *const class_name = HeVAL( hv_fetch_ent(obj, KEY_FOR(package), 0, HASH_FOR(package)) );
+ HV *const stash = gv_stashsv(class_name, 0);
+ UV current;
+ SV *cache_flag;
+ SV *map_ref;
+ PPCODE:
+ if (!stash) {
+ mXPUSHs(newRV_noinc((SV *)newHV()));
+ return;
+ }
+
+ current = mop_check_package_cache_flag(aTHX_ stash);
+ cache_flag = HeVAL( hv_fetch_ent(obj, KEY_FOR(package_cache_flag), TRUE, HASH_FOR(package_cache_flag)));
+ map_ref = HeVAL( hv_fetch_ent(obj, KEY_FOR(methods), TRUE, HASH_FOR(methods)));
+
+ /* $self->{methods} does not yet exist (or got deleted) */
+ if ( !SvROK(map_ref) || SvTYPE(SvRV(map_ref)) != SVt_PVHV ) {
+ SV *new_map_ref = newRV_noinc((SV *)newHV());
+ sv_2mortal(new_map_ref);
+ sv_setsv(map_ref, new_map_ref);
+ }
+
+ if ( !SvOK(cache_flag) || SvUV(cache_flag) != current ) {
+ mop_update_method_map(aTHX_ self, class_name, stash, (HV *)SvRV(map_ref));
+ sv_setuv(cache_flag, mop_check_package_cache_flag(aTHX_ stash)); /* update_cache_flag() */
+ }
+
+ XPUSHs(map_ref);
+
BOOT:
INSTALL_SIMPLE_READER_WITH_KEY(Package, name, package);
+
+
+SV*
+add_package_symbol(SV* self, SV* variable, SV* ref = &PL_sv_undef)
+PREINIT:
+ svtype type;
+ const char* type_name;
+ const char* var_name;
+ STRLEN var_name_len;
+ GV* gv;
+CODE:
+ mop_deconstruct_variable_name(aTHX_ variable, &var_name, &var_name_len, &type, &type_name);
+ gv = mop_get_gv(aTHX_ self, type, var_name, var_name_len, GV_ADDMULTI);
+
+ if(SvOK(ref)){ /* add_package_symbol with a value */
+ if(type == SVt_PV){
+ if(!SvROK(ref)){
+ ref = newRV_noinc(newSVsv(ref));
+ sv_2mortal(ref);
+ }
+ }
+ else if(!(SvROK(ref) && SvTYPE(SvRV(ref)) == type)){
+ croak("You must pass a reference of %s for the value of %s", type_name, GvNAME(CvGV(cv)));
+ }
+
+ if(type == SVt_PVCV && GvCV(gv)){
+ /* XXX: clear it before redefinition */
+ SvREFCNT_dec(GvCV(gv));
+ GvCV(gv) = NULL;
+ }
+ sv_setsv_mg((SV*)gv, ref); /* magical assignment into type glob (*glob = $ref) */
+
+ if(type == SVt_PVCV){ /* name a subroutine */
+ CV* const subr = (CV*)SvRV(ref);
+ if(CvANON(subr)
+ && CvGV(subr)
+ && isGV(CvGV(subr))
+ && strEQ(GvNAME(CvGV(subr)), "__ANON__")){
+
+ CvGV(subr) = gv;
+ CvANON_off(subr);
+ }
+ }
+ RETVAL = ref;
+ SvREFCNT_inc_simple_void_NN(ref);
+ }
+ else{
+ SV* const sv = mop_gv_elem(aTHX_ gv, type, GV_ADDMULTI);
+ RETVAL = (sv && GIMME_V != G_VOID) ? newRV_inc(sv) : &PL_sv_undef;
+ }
+OUTPUT:
+ RETVAL
+
+bool
+has_package_symbol(SV* self, SV* variable)
+PREINIT:
+ svtype type;
+ const char* type_name;
+ const char* var_name;
+ STRLEN var_name_len;
+ GV* gv;
+CODE:
+ mop_deconstruct_variable_name(aTHX_ variable, &var_name, &var_name_len, &type, &type_name);
+ gv = mop_get_gv(aTHX_ self, type, var_name, var_name_len, 0);
+ RETVAL = mop_gv_elem(aTHX_ gv, type, FALSE) ? TRUE : FALSE;
+OUTPUT:
+ RETVAL
+
+SV*
+get_package_symbol(SV* self, SV* variable, ...)
+PREINIT:
+ svtype type;
+ const char* type_name;
+ const char* var_name;
+ STRLEN var_name_len;
+ I32 flags = 0;
+ GV* gv;
+ SV* sv;
+CODE:
+ { /* parse options */
+ I32 i;
+ if((items % 2) != 0){
+ croak("Odd number of arguments for get_package_symbol()");
+ }
+ for(i = 2; i < items; i += 2){
+ SV* const opt = ST(i);
+ SV* const val = ST(i+1);
+ if(strEQ(SvPV_nolen_const(opt), "create")){
+ if(SvTRUE(val)){
+ flags |= GV_ADDMULTI;
+ }
+ else{
+ flags &= ~GV_ADDMULTI;
+ }
+ }
+ else{
+ warn("Unknown option \"%"SVf"\" for get_package_symbol()", opt);
+ }
+ }
+ }
+ mop_deconstruct_variable_name(aTHX_ variable, &var_name, &var_name_len, &type, &type_name);
+ gv = mop_get_gv(aTHX_ self, type, var_name, var_name_len, flags);
+ sv = mop_gv_elem(aTHX_ gv, type, FALSE);
+
+ RETVAL = sv ? newRV_inc(sv) : &PL_sv_undef;
+OUTPUT:
+ RETVAL
projects / gitmo/Class-MOP.git / commitdiff