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63 lines
2.6 KiB
C++
63 lines
2.6 KiB
C++
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#pragma once
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namespace DB
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{
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/// These classes should be present in DB namespace (cannot place them into nemelesspace)
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template <typename> struct AbsImpl;
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template <typename> struct NegateImpl;
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template <typename, typename> struct PlusImpl;
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template <typename, typename> struct MinusImpl;
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template <typename, typename> struct MultiplyImpl;
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template <typename, typename> struct DivideFloatingImpl;
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template <typename, typename> struct DivideIntegralImpl;
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template <typename, typename> struct DivideIntegralOrZeroImpl;
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template <typename, typename> struct LeastBaseImpl;
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template <typename, typename> struct GreatestBaseImpl;
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template <typename, typename> struct ModuloImpl;
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template <typename, typename> struct EqualsOp;
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template <typename, typename> struct NotEqualsOp;
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template <typename, typename> struct LessOrEqualsOp;
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template <typename, typename> struct GreaterOrEqualsOp;
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template <template <typename, typename> typename Op1, template <typename, typename> typename Op2>
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struct IsSameOperation
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{
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static constexpr bool value = std::is_same_v<Op1<UInt8, UInt8>, Op2<UInt8, UInt8>>;
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};
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template <template <typename> typename Op>
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struct IsUnaryOperation
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{
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static constexpr bool abs = std::is_same_v<Op<Int8>, AbsImpl<Int8>>;
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static constexpr bool negate = std::is_same_v<Op<Int8>, NegateImpl<Int8>>;
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};
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template <template <typename, typename> typename Op>
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struct IsOperation
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{
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static constexpr bool equals = IsSameOperation<Op, EqualsOp>::value;
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static constexpr bool not_equals = IsSameOperation<Op, NotEqualsOp>::value;
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static constexpr bool less_or_equals = IsSameOperation<Op, LessOrEqualsOp>::value;
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static constexpr bool greater_or_equals = IsSameOperation<Op, GreaterOrEqualsOp>::value;
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static constexpr bool plus = IsSameOperation<Op, PlusImpl>::value;
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static constexpr bool minus = IsSameOperation<Op, MinusImpl>::value;
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static constexpr bool multiply = IsSameOperation<Op, MultiplyImpl>::value;
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static constexpr bool div_floating = IsSameOperation<Op, DivideFloatingImpl>::value;
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static constexpr bool div_int = IsSameOperation<Op, DivideIntegralImpl>::value;
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static constexpr bool div_int_or_zero = IsSameOperation<Op, DivideIntegralOrZeroImpl>::value;
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static constexpr bool modulo = IsSameOperation<Op, ModuloImpl>::value;
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static constexpr bool least = IsSameOperation<Op, LeastBaseImpl>::value;
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static constexpr bool greatest = IsSameOperation<Op, GreatestBaseImpl>::value;
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static constexpr bool division = div_floating || div_int || div_int_or_zero;
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static constexpr bool allow_decimal =
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plus || minus || multiply ||
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div_floating || div_int || div_int_or_zero ||
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least || greatest;
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};
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}
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