AbstractionPattern
AbstractionPattern::getOptional(AbstractionPattern object) {
switch (object.getKind()) {
case Kind::Invalid:
llvm_unreachable("querying invalid abstraction pattern!");
case Kind::Tuple:
case Kind::PartialCurriedObjCMethodType:
case Kind::CurriedObjCMethodType:
case Kind::CFunctionAsMethodType:
case Kind::PartialCurriedCFunctionAsMethodType:
case Kind::CurriedCFunctionAsMethodType:
case Kind::ObjCMethodType:
llvm_unreachable("cannot add optionality to non-type abstraction");
case Kind::Opaque:
return AbstractionPattern::getOpaque();
case Kind::ClangType:
return AbstractionPattern(object.getGenericSignature(),
OptionalType::get(object.getType())
->getCanonicalType(),
object.getClangType());
case Kind::Type:
return AbstractionPattern(object.getGenericSignature(),
OptionalType::get(object.getType())
->getCanonicalType());
case Kind::Discard:
return AbstractionPattern::getDiscard(object.getGenericSignature(),
OptionalType::get(object.getType())
->getCanonicalType());
}
llvm_unreachable("bad kind");
}
SILType SILType::getFieldType(VarDecl *field, SILModule &M) const {
assert(field->getDeclContext() == getNominalOrBoundGenericNominal());
AbstractionPattern origFieldTy = M.Types.getAbstractionPattern(field);
CanType substFieldTy;
if (field->hasClangNode()) {
substFieldTy = origFieldTy.getType();
} else {
substFieldTy =
getSwiftRValueType()->getTypeOfMember(M.getSwiftModule(),
field, nullptr)->getCanonicalType();
}
auto loweredTy = M.Types.getLoweredType(origFieldTy, substFieldTy);
if (isAddress() || getClassOrBoundGenericClass() != nullptr) {
return loweredTy.getAddressType();
} else {
return loweredTy.getObjectType();
}
}
SILType TypeConverter::getLoweredTypeOfGlobal(VarDecl *var) {
AbstractionPattern origType = getAbstractionPattern(var);
assert(!origType.isTypeParameter());
return getLoweredType(origType, origType.getType()).getObjectType();
}