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#pragma once
#include "ordered_pairs.h"
#include <util/generic/strbuf.h>
#include <util/stream/fwd.h>
namespace NEnumSerializationRuntime {
// compile-time conversion method selection
constexpr size_t LINEAR_SEARCH_KEYS_SIZE_THRESHOLD = 6;
constexpr size_t LINEAR_SEARCH_VALUES_SIZE_THRESHOLD = 2;
template <class TNameBufs, typename EEnum>
inline void DispatchOutFn(IOutputStream& os, EEnum n) {
constexpr auto order = TNameBufs::NamesOrder;
if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::DirectMapping) {
return TNameBufs::OutDirect(&os, n, TNameBufs::EnumInitializationData);
} else if constexpr (std::size(TNameBufs::EnumInitializationData.NamesInitializer) <= LINEAR_SEARCH_KEYS_SIZE_THRESHOLD) {
return TNameBufs::OutFullScan(&os, n, TNameBufs::EnumInitializationData);
} else if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::Ascending) {
return TNameBufs::OutSorted(&os, n, TNameBufs::EnumInitializationData);
} else {
const TNameBufs& names = TNameBufs::Instance();
return names.Out(&os, n);
}
}
template <class TNameBufs, typename EEnum>
inline TStringBuf DispatchToStringBufFn(EEnum n) {
constexpr auto order = TNameBufs::NamesOrder;
if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::DirectMapping) {
return TNameBufs::ToStringBufDirect(n, TNameBufs::EnumInitializationData);
} else if constexpr (std::size(TNameBufs::EnumInitializationData.NamesInitializer) <= LINEAR_SEARCH_KEYS_SIZE_THRESHOLD) {
return TNameBufs::ToStringBufFullScan(n, TNameBufs::EnumInitializationData);
} else if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::Ascending) {
return TNameBufs::ToStringBufSorted(n, TNameBufs::EnumInitializationData);
} else {
const TNameBufs& names = TNameBufs::Instance();
return names.ToStringBuf(n);
}
}
template <class TNameBufs, typename EEnum>
inline EEnum DispatchFromStringImplFn(const char* data, size_t len) {
const TStringBuf name{data, len};
constexpr auto order = TNameBufs::ValuesOrder;
static_assert(order >= ::NEnumSerializationRuntime::ESortOrder::Ascending, "enum_parser produced unsorted output"); // comment this line to use run-time sort for temporary workaround
if constexpr (std::size(TNameBufs::EnumInitializationData.ValuesInitializer) <= LINEAR_SEARCH_VALUES_SIZE_THRESHOLD) {
return TNameBufs::FromStringFullScan(name, TNameBufs::EnumInitializationData);
} else if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::Ascending) {
return TNameBufs::FromStringSorted(name, TNameBufs::EnumInitializationData);
} else {
const TNameBufs& names = TNameBufs::Instance();
return names.FromString(name);
}
}
template <class TNameBufs, typename EEnum>
inline bool DispatchTryFromStringImplFn(const char* data, size_t len, EEnum& result) {
const TStringBuf name{data, len};
constexpr auto order = TNameBufs::ValuesOrder;
if constexpr (std::size(TNameBufs::EnumInitializationData.ValuesInitializer) <= LINEAR_SEARCH_VALUES_SIZE_THRESHOLD) {
return TNameBufs::TryFromStringFullScan(name, result, TNameBufs::EnumInitializationData);
} else if constexpr (order >= ::NEnumSerializationRuntime::ESortOrder::Ascending) {
return TNameBufs::TryFromStringSorted(name, result, TNameBufs::EnumInitializationData);
} else {
const TNameBufs& names = TNameBufs::Instance();
return names.FromString(name, result);
}
}
}
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