FormalLinkage swift::getTypeLinkage(CanType type) {
FormalLinkage result = FormalLinkage::Top;
// Merge all nominal types from the structural type.
(void) type.findIf([&](Type _type) {
CanType type = CanType(_type);
// For any nominal type reference, look at the type declaration.
if (auto nominal = type->getAnyNominal())
result ^= getDeclLinkage(nominal);
assert(!isa<PolymorphicFunctionType>(type) &&
"Don't expect a polymorphic function type here");
return false; // continue searching
});
return result;
}
FormalLinkage swift::getTypeLinkage(CanType type) {
FormalLinkage result = FormalLinkage::Top;
// Merge all nominal types from the structural type.
(void) type.findIf([&](Type _type) {
CanType type = CanType(_type);
// For any nominal type reference, look at the type declaration.
if (auto nominal = type->getAnyNominal()) {
result ^= getDeclLinkage(nominal);
// For polymorphic function types, look at the generic parameters.
// FIXME: findIf should do this, once polymorphic function types can be
// canonicalized and re-formed properly.
} else if (auto polyFn = dyn_cast<PolymorphicFunctionType>(type)) {
result ^= getGenericClauseLinkage(polyFn->getGenericParameters());
}
return false; // continue searching
});
return result;
}