/// Add a 32-bit relative offset to a mangled typeref string
/// in the typeref reflection section.
void addTypeRef(ModuleDecl *ModuleContext, CanType type,
CanGenericSignature Context = {}) {
assert(type);
// Generic parameters should be written in terms of interface types
// for the purposes of reflection metadata
assert(!type->hasArchetype() && "Forgot to map typeref out of context");
// TODO: As a compatibility hack, mangle single-field boxes with the legacy
// mangling in reflection metadata.
bool isSingleFieldOfBox = false;
auto boxTy = dyn_cast<SILBoxType>(type);
if (boxTy && boxTy->getLayout()->getFields().size() == 1) {
GenericContextScope scope(IGM, Context);
type = boxTy->getFieldLoweredType(IGM.getSILModule(), 0);
isSingleFieldOfBox = true;
}
IRGenMangler mangler;
std::string MangledStr = mangler.mangleTypeForReflection(type,
ModuleContext, isSingleFieldOfBox);
auto mangledName = IGM.getAddrOfStringForTypeRef(MangledStr);
addRelativeAddress(mangledName);
}
llvm::Constant *IRGenModule::getTypeRef(CanType type) {
IRGenMangler Mangler;
auto SymbolicName = Mangler.mangleTypeForReflection(*this, type);
return getAddrOfStringForTypeRef(SymbolicName);
}
