Function load

include/pybind11/eigen/tensor.h:178–219

    PYBIND11_TYPE_CASTER(Type, temp_name);

    bool load(handle src, bool convert) {
        if (!convert) {
            if (!isinstance<array>(src)) {
                return false;
            }
            array temp = array::ensure(src);
            if (!temp) {
                return false;
            }

            if (!temp.dtype().is(dtype::of<typename Type::Scalar>())) {
                return false;
            }
        }

        array_t<typename Type::Scalar, compute_array_flag_from_tensor<Type>()> arr(
            reinterpret_borrow<object>(src));

        if (arr.ndim() != Type::NumIndices) {
            return false;
        }
        auto shape = get_shape_for_array<typename Type::Index, Type::NumIndices>(arr);

        if (!Helper::is_correct_shape(shape)) {
            return false;
        }

#if EIGEN_VERSION_AT_LEAST(3, 4, 0)
        auto data_pointer = arr.data();
#else
        // Handle Eigen bug
        auto data_pointer = const_cast<typename Type::Scalar *>(arr.data());
#endif

        if (is_tensor_aligned(arr.data())) {
            value = Eigen::TensorMap<const Type, Eigen::Aligned>(data_pointer, shape);
        } else {
            value = Eigen::TensorMap<const Type>(data_pointer, shape);
        }

        return true;
    }

    static handle cast(Type &&src, return_value_policy policy, handle parent) {
        if (policy == return_value_policy::reference