vtkprecision.hh

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#ifndef DUMUX_IO_VTK_PRECISION_HH
#define DUMUX_IO_VTK_PRECISION_HH
 
#include <array>
#include <string_view>
 
#include <dune/common/version.hh>
#include <dune/grid/io/file/vtk/common.hh>
 
namespace Dumux::Vtk {
 
#if DUNE_VERSION_LT(DUNE_GRID, 2, 7)
enum class Precision
{
    int32,
    uint8,
    uint32,
    float32,
    float64
};
#else
using Dune::VTK::Precision;
#endif

inline Precision stringToPrecision(std::string_view precisionName)
{
    // this should really be constexpr but GCC <= 7.2 has a bug which
    // doesn't allow string_view to be constexpr
    static const std::array<std::pair<std::string_view, Precision>, 5> nameToPrecision
    {{
        { "Float32", Precision::float32 },
        { "Float64", Precision::float64 },
        { "UInt32", Precision::uint32 },
        { "UInt8", Precision::uint8 },
        { "Int32", Precision::int32 },
    }};
 
    for (const auto& [name, precision] : nameToPrecision)
        if (name == precisionName)
            return precision;
 
    DUNE_THROW(Dune::InvalidStateException, "Unknown precision type " << precisionName);
}
 
} // end namespace Dumux::Vtk
 
#endif