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#pragma once
#ifndef ENUM_INL_H_
#error "Direct inclusion of this file is not allowed, include enum.h"
// For the sake of sane code completion.
#include "enum.h"
#endif
#include <util/string/printf.h>
#include <util/string/cast.h>
#include <util/generic/cast.h>
#include <algorithm>
#include <stdexcept>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
#define ENUM__CLASS(enumType, underlyingType, seq) \
enum class enumType : underlyingType \
{ \
PP_FOR_EACH(ENUM__DOMAIN_ITEM, seq) \
};
#define ENUM__DOMAIN_ITEM(item) \
PP_IF( \
PP_IS_SEQUENCE(item), \
ENUM__DOMAIN_ITEM_SEQ, \
ENUM__DOMAIN_ITEM_ATOMIC \
)(item)()
#define ENUM__DOMAIN_ITEM_ATOMIC(item) \
item PP_COMMA
#define ENUM__DOMAIN_ITEM_SEQ(seq) \
PP_ELEMENT(seq, 0) = PP_ELEMENT(seq, 1) PP_COMMA
////////////////////////////////////////////////////////////////////////////////
namespace NDetail {
template <typename TValues>
constexpr bool CheckValuesMonotonic(const TValues& values)
{
return std::adjacent_find(values.begin(), values.end(), std::greater_equal<>()) == values.end();
}
template <typename TValues>
constexpr bool CheckValuesUnique(const TValues& values)
{
if (CheckValuesMonotonic(values)) {
return true;
}
for (size_t i = 0; i < std::size(values); ++i) {
for (size_t j = i + 1; j < std::size(values); ++j) {
if (values[i] == values[j]) {
return false;
}
}
}
return true;
}
template <typename TNames>
constexpr bool CheckDomainNames(const TNames& names)
{
for (size_t i = 0; i < std::size(names); ++i) {
if (std::size(names[i]) == 0) {
return false;
}
for (size_t j = 1; j < std::size(names[i]); ++j) {
// If name does not start with a capital letter, all the others must be in lowercase.
if (('A' <= names[i][j] && names[i][j] <= 'Z') && ('A' > names[i][0] || names[i][0] > 'Z')) {
return false;
}
}
}
return true;
}
} // namespace NDetail
////////////////////////////////////////////////////////////////////////////////
#define ENUM__BEGIN_TRAITS(enumType, underlyingType, isBit, isStringSerializable, seq) \
struct TEnumTraitsImpl_##enumType \
{ \
using T = enumType; \
\
[[maybe_unused]] static constexpr bool IsBitEnum = isBit; \
[[maybe_unused]] static constexpr bool IsStringSerializableEnum = isStringSerializable; \
static constexpr int DomainSize = PP_COUNT(seq); \
\
static constexpr int GetDomainSize() \
{ \
return DomainSize; \
} \
\
static constexpr std::array<TStringBuf, DomainSize> Names{{ \
PP_FOR_EACH(ENUM__GET_DOMAIN_NAMES_ITEM, seq) \
}}; \
static_assert(::NYT::NDetail::CheckDomainNames(Names), \
"Enumeration " #enumType " contains names in wrong format"); \
static constexpr std::array<T, DomainSize> Values{{ \
PP_FOR_EACH(ENUM__GET_DOMAIN_VALUES_ITEM, seq) \
}}; \
\
static TStringBuf GetTypeName() \
{ \
static constexpr TStringBuf Result = PP_STRINGIZE(enumType); \
return Result; \
} \
\
static const std::optional<TStringBuf> FindLiteralByValue(T value) \
{ \
for (int i = 0; i < GetDomainSize(); ++i) { \
if (Values[i] == value) { \
return Names[i]; \
} \
} \
return std::nullopt; \
} \
\
static std::optional<T> FindValueByLiteral(TStringBuf literal) \
{ \
for (int i = 0; i < GetDomainSize(); ++i) { \
if (Names[i] == literal) { \
return Values[i]; \
} \
} \
return std::nullopt; \
} \
\
static constexpr const std::array<TStringBuf, DomainSize>& GetDomainNames() \
{ \
return Names; \
} \
\
static constexpr const std::array<T, DomainSize>& GetDomainValues() \
{ \
return Values; \
}
#define ENUM__GET_DOMAIN_VALUES_ITEM(item) \
PP_IF( \
PP_IS_SEQUENCE(item), \
ENUM__GET_DOMAIN_VALUES_ITEM_SEQ, \
ENUM__GET_DOMAIN_VALUES_ITEM_ATOMIC \
)(item)
#define ENUM__GET_DOMAIN_VALUES_ITEM_SEQ(seq) \
ENUM__GET_DOMAIN_VALUES_ITEM_ATOMIC(PP_ELEMENT(seq, 0))
#define ENUM__GET_DOMAIN_VALUES_ITEM_ATOMIC(item) \
T::item,
#define ENUM__GET_DOMAIN_NAMES_ITEM(item) \
PP_IF( \
PP_IS_SEQUENCE(item), \
ENUM__GET_DOMAIN_NAMES_ITEM_SEQ, \
ENUM__GET_DOMAIN_NAMES_ITEM_ATOMIC \
)(item)
#define ENUM__GET_DOMAIN_NAMES_ITEM_SEQ(seq) \
PP_IF( \
ENUM__ITEM_SEQ_HAS_DOMAIN_NAME(seq), \
ENUM__GET_DOMAIN_NAMES_ITEM_SEQ_CUSTOM, \
ENUM__GET_DOMAIN_NAMES_ITEM_SEQ_AUTO \
)(seq)
#define ENUM__ITEM_SEQ_HAS_DOMAIN_NAME(seq) \
PP_CONCAT(ENUM__ITEM_SEQ_HAS_DOMAIN_NAME_, PP_COUNT(seq))
#define ENUM__ITEM_SEQ_HAS_DOMAIN_NAME_2 PP_FALSE
#define ENUM__ITEM_SEQ_HAS_DOMAIN_NAME_3 PP_TRUE
#define ENUM__GET_DOMAIN_NAMES_ITEM_SEQ_CUSTOM(seq) \
TStringBuf(PP_ELEMENT(seq, 2)),
#define ENUM__GET_DOMAIN_NAMES_ITEM_SEQ_AUTO(seq) \
ENUM__GET_DOMAIN_NAMES_ITEM_ATOMIC(PP_ELEMENT(seq, 0))
#define ENUM__GET_DOMAIN_NAMES_ITEM_ATOMIC(item) \
TStringBuf(PP_STRINGIZE(item)),
#define ENUM__VALIDATE_UNIQUE(enumType) \
static_assert(::NYT::NDetail::CheckValuesUnique(Values), \
"Enumeration " #enumType " contains duplicate values");
#define ENUM__END_TRAITS(enumType) \
}; \
\
[[maybe_unused]] inline TEnumTraitsImpl_##enumType GetEnumTraitsImpl(enumType) \
{ \
return {}; \
} \
\
using ::ToString; \
[[maybe_unused]] inline TString ToString(enumType value) \
{ \
return ::NYT::TEnumTraits<enumType>::ToString(value); \
}
////////////////////////////////////////////////////////////////////////////////
template <class T>
constexpr int TEnumTraitsWithKnownDomain<T, true>::GetDomainSize()
{
return TEnumTraitsImpl<T>::GetDomainSize();
}
template <class T>
constexpr auto TEnumTraitsWithKnownDomain<T, true>::GetDomainNames() -> const std::array<TStringBuf, GetDomainSize()>&
{
return TEnumTraitsImpl<T>::GetDomainNames();
}
template <class T>
constexpr auto TEnumTraitsWithKnownDomain<T, true>::GetDomainValues() -> const std::array<T, GetDomainSize()>&
{
return TEnumTraitsImpl<T>::GetDomainValues();
}
template <class T>
constexpr T TEnumTraitsWithKnownDomain<T, true>::GetMinValue()
requires (!TEnumTraitsImpl<T>::IsBitEnum)
{
const auto& values = GetDomainValues();
static_assert(!values.empty()); \
return *std::min_element(std::begin(values), std::end(values));
}
template <class T>
constexpr T TEnumTraitsWithKnownDomain<T, true>::GetMaxValue()
requires (!TEnumTraitsImpl<T>::IsBitEnum)
{
const auto& values = GetDomainValues();
static_assert(!values.empty()); \
return *std::max_element(std::begin(values), std::end(values));
}
template <class T>
std::vector<T> TEnumTraitsWithKnownDomain<T, true>::Decompose(T value)
requires (TEnumTraitsImpl<T>::IsBitEnum)
{
std::vector<T> result;
for (auto domainValue : GetDomainValues()) {
if (Any(value & domainValue)) {
result.push_back(domainValue);
}
}
return result;
}
////////////////////////////////////////////////////////////////////////////////
template <class T>
TStringBuf TEnumTraits<T, true>::GetTypeName()
{
return TEnumTraitsImpl<T>::GetTypeName();
}
template <class T>
std::optional<T> TEnumTraits<T, true>::FindValueByLiteral(TStringBuf literal)
{
return TEnumTraitsImpl<T>::FindValueByLiteral(literal);
}
template <class T>
std::optional<TStringBuf> TEnumTraits<T, true>::FindLiteralByValue(T value)
{
return TEnumTraitsImpl<T>::FindLiteralByValue(value);
}
template <class T>
TString TEnumTraits<T, true>::ToString(T value)
{
using ::ToString;
if (auto optionalLiteral = TEnumTraits<T>::FindLiteralByValue(value)) {
return ToString(*optionalLiteral);
}
TString result;
result = TEnumTraits<T>::GetTypeName();
result += "(";
result += ToString(ToUnderlying(value));
result += ")";
return result;
}
template <class T>
T TEnumTraits<T, true>::FromString(TStringBuf literal)
{
auto optionalValue = FindValueByLiteral(literal);
if (!optionalValue) {
throw ::NYT::TSimpleException(Sprintf("Error parsing %s value %s",
GetTypeName().data(),
TString(literal).Quote().c_str()).c_str());
}
return *optionalValue;
}
////////////////////////////////////////////////////////////////////////////////
template <class E, class T, E Min, E Max>
constexpr TEnumIndexedVector<E, T, Min, Max>::TEnumIndexedVector()
: Items_{}
{ }
template <class E, class T, E Min, E Max>
constexpr TEnumIndexedVector<E, T, Min, Max>::TEnumIndexedVector(std::initializer_list<T> elements)
: Items_{}
{
Y_ASSERT(std::distance(elements.begin(), elements.end()) <= N);
size_t index = 0;
for (const auto& element : elements) {
Items_[index++] = element;
}
}
template <class E, class T, E Min, E Max>
T& TEnumIndexedVector<E, T, Min, Max>::operator[] (E index)
{
Y_ASSERT(index >= Min && index <= Max);
return Items_[ToUnderlying(index) - ToUnderlying(Min)];
}
template <class E, class T, E Min, E Max>
const T& TEnumIndexedVector<E, T, Min, Max>::operator[] (E index) const
{
return const_cast<TEnumIndexedVector&>(*this)[index];
}
template <class E, class T, E Min, E Max>
T* TEnumIndexedVector<E, T, Min, Max>::begin()
{
return Items_.data();
}
template <class E, class T, E Min, E Max>
const T* TEnumIndexedVector<E, T, Min, Max>::begin() const
{
return Items_.data();
}
template <class E, class T, E Min, E Max>
T* TEnumIndexedVector<E, T, Min, Max>::end()
{
return begin() + N;
}
template <class E, class T, E Min, E Max>
const T* TEnumIndexedVector<E, T, Min, Max>::end() const
{
return begin() + N;
}
template <class E, class T, E Min, E Max>
bool TEnumIndexedVector<E, T, Min, Max>::IsDomainValue(E value)
{
return value >= Min && value <= Max;
}
////////////////////////////////////////////////////////////////////////////////
#define ENUM__BINARY_BITWISE_OPERATOR(T, assignOp, op) \
[[maybe_unused]] inline constexpr T operator op (T lhs, T rhs) \
{ \
return T(ToUnderlying(lhs) op ToUnderlying(rhs)); \
} \
\
[[maybe_unused]] inline T& operator assignOp (T& lhs, T rhs) \
{ \
lhs = T(ToUnderlying(lhs) op ToUnderlying(rhs)); \
return lhs; \
}
#define ENUM__UNARY_BITWISE_OPERATOR(T, op) \
[[maybe_unused]] inline constexpr T operator op (T value) \
{ \
return T(op ToUnderlying(value)); \
}
#define ENUM__BIT_SHIFT_OPERATOR(T, assignOp, op) \
[[maybe_unused]] inline constexpr T operator op (T lhs, size_t rhs) \
{ \
return T(ToUnderlying(lhs) op rhs); \
} \
\
[[maybe_unused]] inline T& operator assignOp (T& lhs, size_t rhs) \
{ \
lhs = T(ToUnderlying(lhs) op rhs); \
return lhs; \
}
#define ENUM__BITWISE_OPS(enumType) \
ENUM__BINARY_BITWISE_OPERATOR(enumType, &=, &) \
ENUM__BINARY_BITWISE_OPERATOR(enumType, |=, | ) \
ENUM__BINARY_BITWISE_OPERATOR(enumType, ^=, ^) \
ENUM__UNARY_BITWISE_OPERATOR(enumType, ~) \
ENUM__BIT_SHIFT_OPERATOR(enumType, <<=, << ) \
ENUM__BIT_SHIFT_OPERATOR(enumType, >>=, >> )
////////////////////////////////////////////////////////////////////////////////
template <typename E>
requires TEnumTraits<E>::IsBitEnum
constexpr bool Any(E value) noexcept
{
return ToUnderlying(value) != 0;
}
template <typename E>
requires TEnumTraits<E>::IsBitEnum
constexpr bool None(E value) noexcept
{
return ToUnderlying(value) == 0;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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