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97 lines
2.6 KiB
97 lines
2.6 KiB
2 years ago
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#include "MString.h"
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#include <variant>
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#if !defined(M__VARTYPE)
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#define M__VARTYPE
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using michlib::MString;
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namespace vartype
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{
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enum class Vartype
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{
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NONE,
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U,
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V,
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TEMP,
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SAL,
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CHL
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};
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template<Vartype vt_> struct VartypeCarrier
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{
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static const Vartype vt = vt_;
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};
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using VartypeUnion = std::variant<VartypeCarrier<Vartype::NONE>, VartypeCarrier<Vartype::U>, VartypeCarrier<Vartype::V>, VartypeCarrier<Vartype::TEMP>,
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VartypeCarrier<Vartype::SAL>, VartypeCarrier<Vartype::CHL>>;
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template<class T, Vartype vt>
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concept HasVar = requires(T t)
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{
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{
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t.template Read<vt>(0)(0, 0)
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} -> std::convertible_to<real>;
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{
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t.template Read<vt>(std::vector<size_t>())(0, 0)
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} -> std::convertible_to<real>;
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};
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} // namespace vartype
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template<class DT, vartype::Vartype vt> static constexpr bool isDataSupported = vartype::HasVar<DT, vt>;
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class VarType: public vartype::VartypeUnion
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{
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auto VT() const
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{
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return std::visit(
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[](auto v) -> auto{ return decltype(v)::vt; }, *this);
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}
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public:
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template<vartype::Vartype vt> VarType(vartype::VartypeCarrier<vt>&& vc): vartype::VartypeUnion(std::move(vc)) {}
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VarType(MString str)
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{
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str.ToLower();
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if(str == "u") *this = vartype::VartypeCarrier<vartype::Vartype::U>();
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if(str == "v") *this = vartype::VartypeCarrier<vartype::Vartype::V>();
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if(str == "t" || str == "temp" || str == "temperature") *this = vartype::VartypeCarrier<vartype::Vartype::TEMP>();
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if(str == "s" || str == "sal" || str == "salinity") *this = vartype::VartypeCarrier<vartype::Vartype::SAL>();
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if(str == "c" || str == "chl" || str == "chlorophyll") *this = vartype::VartypeCarrier<vartype::Vartype::CHL>();
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}
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MString Name() const
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{
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switch(VT())
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{
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case(vartype::Vartype::NONE): return "none";
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case(vartype::Vartype::U): return "U";
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case(vartype::Vartype::V): return "V";
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case(vartype::Vartype::TEMP): return "Temperature";
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case(vartype::Vartype::SAL): return "Salinity";
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case(vartype::Vartype::CHL): return "Chlorophyll";
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}
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return "none";
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}
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bool Ok() const { return VT() != vartype::Vartype::NONE; }
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explicit operator bool() const { return Ok(); }
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bool operator==(const VarType& vt) const { return VT() == vt.VT(); }
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bool operator!=(const VarType& vt) const { return VT() != vt.VT(); }
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template<class Data> bool isSupported() const
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{
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return std::visit(
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[](const auto v) -> bool
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{
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if constexpr(isDataSupported<Data, decltype(v)::vt>)
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return true;
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else
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return false;
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},
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*this);
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}
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};
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#endif
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