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#ifndef DataFormats_Common_ConvertHandle_h
#define DataFormats_Common_ConvertHandle_h
#include "DataFormats/Common/interface/BasicHandle.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/Common/interface/Wrapper.h"
#include "FWCore/Utilities/interface/Likely.h"
#include <typeinfo>
#include <algorithm>
#include <memory>
namespace edm {
namespace handleimpl {
void throwConvertTypeError(std::type_info const& expected, std::type_info const& actual);
std::shared_ptr<edm::HandleExceptionFactory const> makeInvalidReferenceException();
} // namespace handleimpl
// Convert from handle-to-void to handle-to-T
template <typename T>
Handle<T> convert_handle(BasicHandle&& bh) noexcept(true) {
if UNLIKELY (bh.failedToGet()) {
return Handle<T>(std::move(bh.whyFailedFactory()));
}
void const* basicWrapper = bh.wrapper();
if UNLIKELY (nullptr == basicWrapper) {
return Handle<T>{handleimpl::makeInvalidReferenceException()};
}
auto wrapper = static_cast<Wrapper<T> const*>(basicWrapper);
return Handle<T>(wrapper->product(), bh.provenance());
}
template <typename T>
Handle<T> convert_handle_check_type(BasicHandle&& bh) {
if UNLIKELY (bh.failedToGet()) {
return Handle<T>(std::move(bh.whyFailedFactory()));
}
void const* basicWrapper = bh.wrapper();
if UNLIKELY (basicWrapper == nullptr) {
return Handle<T>{handleimpl::makeInvalidReferenceException()};
}
if UNLIKELY (!(bh.wrapper()->dynamicTypeInfo() == typeid(T))) {
handleimpl::throwConvertTypeError(typeid(T), bh.wrapper()->dynamicTypeInfo());
}
Wrapper<T> const* wrapper = static_cast<Wrapper<T> const*>(basicWrapper);
return Handle<T>(wrapper->product(), bh.provenance());
}
} // namespace edm
#endif
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