66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
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#ifndef id56E2396E102B4E10B20466D6B57A4C66
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#define id56E2396E102B4E10B20466D6B57A4C66
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#include "mapreaders/mapstreambase.hpp"
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#include "implem/helpers.hpp"
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#include <cstddef>
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#include <algorithm>
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#include <type_traits>
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#include <istream>
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namespace dk {
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namespace implem {
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template <typename T>
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class HasMapDimensions {
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class yes { char m; };
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class nope { yes m[2]; };
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static yes deduce ( int a, int b = T::MapDimensions );
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static nope deduce ( ... );
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public:
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enum {
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result = (sizeof(yes) == sizeof(deduce(1)))
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};
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};
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template <std::size_t D, typename Device>
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typename std::enable_if<Device::MapDimensions == D, std::size_t>::type err_mismatching_dimension ( const Device* ) noexcept a_pure;
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template <std::size_t D, typename Device>
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typename std::enable_if<HasMapDimensions<Device>::result == false, std::size_t>::type err_mismatching_dimension ( const Device* ) noexcept a_pure;
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template <std::size_t D, typename Device>
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typename std::enable_if<Device::MapDimensions == D, Vector<CoordinateScalarType, D>>::type retrieve_map_size_from_device ( Device* parDevice );
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template <std::size_t D, typename Device>
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typename std::enable_if<HasMapDimensions<Device>::result == false, Vector<CoordinateScalarType, D>>::type retrieve_map_size_from_device ( Device* parDevice );
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} //namespace implem
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//Customization point - specialize to enable map size retrieval for Device
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template <std::size_t D, typename Device>
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typename Device::coords get_map_size_from_device ( const Device* parDevice );
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template <typename T, std::size_t D>
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class MapStreamRaw : public MapStreamBase<D> {
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public:
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typedef typename MapStreamBase<D>::coords coords;
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MapStreamRaw ( void ) = delete;
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template <typename Device>
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explicit MapStreamRaw ( Device& parDevice );
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virtual ~MapStreamRaw ( void ) noexcept = default;
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virtual bool isReadable ( void ) const { return true; }
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virtual bool isWriteable ( void ) const { return false; }
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private:
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virtual std::size_t dataBlockRequested ( char* parOut, std::size_t parOutSize, const coords& parFrom, const coords& parTo );
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std::istream m_istream;
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const bool m_deviceHasDim;
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};
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} //namespace dk
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#include "implem/mapstreamraw.inl"
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#endif
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