//==================================================================================================
/*
  ROTGEN - Runtime Overlay for Eigen
  Copyright : CODE RECKONS
  SPDX-License-Identifier: BSL-1.0
*/
//==================================================================================================
#include "unit/tests.hpp"
#include <rotgen/rotgen.hpp>

template<int size = rotgen::Dynamic, typename Scalar = float, int maxSize = size>
using column = rotgen::matrix<Scalar, size, 1, rotgen::ColMajor, maxSize, 1>;

template<int size = rotgen::Dynamic, typename Scalar = float>
using column_ref = rotgen::ref<column<size, Scalar>>;

template<int size = rotgen::Dynamic, typename Scalar = float>
using const_column_ref = rotgen::ref<column<size, Scalar> const>;


template<int N>
void process( column_ref<N> v )
{
  v(0) = rotgen::sum(v);
}

auto process( column_ref<> v )
{
  auto sz = v.size();
  switch(sz)
  {
    case 1 : process<1>(v); break;
    case 2 : process<2>(v); break;
    case 3 : process<3>(v); break;
    default: break;
  }

  return sz;
}

TTS_CASE("Reference of reference check")
{
  auto v1 = rotgen::matrix<float,1,1>::Ones();
  auto v2 = rotgen::matrix<float,2,1>::Random();
  auto v3 = rotgen::matrix<float,3,1>::Constant(6.66);

  auto sum1 = v1(0);
  auto sum2 = v2(0) + v2(1);
  auto sum3 = v3(0) + v3(1) + v3(2);

  TTS_EQUAL(process(v1), 1);
  TTS_EQUAL(process(v2), 2);
  TTS_EQUAL(process(v3), 3);

  TTS_EQUAL(v1[0], sum1);
  TTS_EQUAL(v2[0], sum2);
  TTS_EQUAL(v3[0], sum3);
};