DeclarationName::DeclarationName(Selector Sel) {
if (!Sel.getAsOpaquePtr()) {
Ptr = 0;
return;
}
switch (Sel.getNumArgs()) {
case 0:
Ptr = reinterpret_cast<uintptr_t>(Sel.getAsIdentifierInfo());
assert((Ptr & PtrMask) == 0 && "Improperly aligned IdentifierInfo");
Ptr |= StoredObjCZeroArgSelector;
break;
case 1:
Ptr = reinterpret_cast<uintptr_t>(Sel.getAsIdentifierInfo());
assert((Ptr & PtrMask) == 0 && "Improperly aligned IdentifierInfo");
Ptr |= StoredObjCOneArgSelector;
break;
default:
Ptr = Sel.InfoPtr & ~Selector::ArgFlags;
assert((Ptr & PtrMask) == 0 && "Improperly aligned MultiKeywordSelector");
Ptr |= StoredDeclarationNameExtra;
break;
}
}
/// \brief Get a GlobalSelector for the ASTContext-specific selector.
GlobalSelector GlobalSelector::get(Selector Sel, Program &Prog) {
if (Sel.isNull())
return GlobalSelector();
ProgramImpl &ProgImpl = *static_cast<ProgramImpl*>(Prog.Impl);
llvm::SmallVector<IdentifierInfo *, 8> Ids;
for (unsigned i = 0, e = Sel.isUnarySelector() ? 1 : Sel.getNumArgs();
i != e; ++i) {
IdentifierInfo *II = Sel.getIdentifierInfoForSlot(i);
IdentifierInfo *GlobII = &ProgImpl.getIdents().get(II->getName(),
II->getName() + II->getLength());
Ids.push_back(GlobII);
}
Selector GlobSel = ProgImpl.getSelectors().getSelector(Sel.getNumArgs(),
Ids.data());
return GlobalSelector(GlobSel.getAsOpaquePtr());
}