/*
//@HEADER
// ************************************************************************
// 
//                        Kokkos v. 2.0
//              Copyright (2014) Sandia Corporation
// 
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
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// modification, are permitted provided that the following conditions are
// met:
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// 1. Redistributions of source code must retain the above copyright
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// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
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// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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*/

#ifndef TEST_FUNCTOR_ANALYSIS_HPP
#define TEST_FUNCTOR_ANALYSIS_HPP

#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>

/*--------------------------------------------------------------------------*/

namespace Test {

struct TestFunctorAnalysis_03 {

  struct value_type { double x[2]; };

  KOKKOS_INLINE_FUNCTION
  void operator()( int , value_type & ) const {}

  KOKKOS_INLINE_FUNCTION
  void join( value_type volatile & , value_type const volatile & ) const {}

  KOKKOS_INLINE_FUNCTION static
  void init( value_type & ) {}
};


template< class ExecSpace >
void test_functor_analysis()
{
  //------------------------------
  auto c01 = KOKKOS_LAMBDA(int){} ;
  typedef Kokkos::Impl::FunctorAnalysis
            < Kokkos::Impl::FunctorPatternInterface::FOR
            , Kokkos::RangePolicy< ExecSpace >
            , decltype( c01 ) >
    A01 ;

  typedef typename A01::template Reducer< typename ExecSpace::memory_space >
    R01 ;

  static_assert( std::is_same< typename A01::value_type , void >::value , "" );
  static_assert( std::is_same< typename A01::pointer_type , void >::value , "" );
  static_assert( std::is_same< typename A01::reference_type , void >::value , "" );
  static_assert( std::is_same< typename R01::functor_type , decltype(c01) >::value , "" );

  static_assert( ! A01::has_join_member_function , "" );
  static_assert( ! A01::has_init_member_function , "" );
  static_assert( ! A01::has_final_member_function , "" );
  static_assert( A01::StaticValueSize == 0 , "" );
  ASSERT_EQ( R01( & c01 ).length() , 0 );

  //------------------------------
  auto c02 = KOKKOS_LAMBDA(int,double&){} ;
  typedef Kokkos::Impl::FunctorAnalysis
    < Kokkos::Impl::FunctorPatternInterface::REDUCE
    , Kokkos::RangePolicy< ExecSpace >
    , decltype( c02 ) >
    A02 ;
  typedef typename A02::template Reducer< typename ExecSpace::memory_space >
    R02 ;

  static_assert( std::is_same< typename A02::value_type , double >::value , "" );
  static_assert( std::is_same< typename A02::pointer_type , double * >::value , "" );
  static_assert( std::is_same< typename A02::reference_type , double & >::value , "" );
  static_assert( std::is_same< typename R02::functor_type , decltype(c02) >::value , "" );

  static_assert( ! A02::has_join_member_function , "" );
  static_assert( ! A02::has_init_member_function , "" );
  static_assert( ! A02::has_final_member_function , "" );
  static_assert( A02::StaticValueSize == sizeof(double) , "" );
  ASSERT_EQ( R02( & c02 ).length() , 1 );

  //------------------------------
  
  TestFunctorAnalysis_03 c03 ;
  typedef Kokkos::Impl::FunctorAnalysis
    < Kokkos::Impl::FunctorPatternInterface::REDUCE
    , Kokkos::RangePolicy< ExecSpace >
    , TestFunctorAnalysis_03 > 
    A03 ;
  typedef typename A03::template Reducer< typename ExecSpace::memory_space >
    R03 ;

  static_assert( std::is_same< typename A03::value_type , TestFunctorAnalysis_03::value_type >::value , "" );
  static_assert( std::is_same< typename A03::pointer_type , TestFunctorAnalysis_03::value_type * >::value , "" );
  static_assert( std::is_same< typename A03::reference_type , TestFunctorAnalysis_03::value_type & >::value , "" );
  static_assert( std::is_same< typename R03::functor_type , TestFunctorAnalysis_03 >::value , "" );

  static_assert( A03::has_join_member_function , "" );
  static_assert( A03::has_init_member_function , "" );
  static_assert( ! A03::has_final_member_function , "" );
  static_assert( A03::StaticValueSize == sizeof(TestFunctorAnalysis_03::value_type) , "" );
  ASSERT_EQ( R03( & c03 ).length() , 1 );

  //------------------------------

  

}

TEST_F( TEST_CATEGORY , functor_analysis )
{
  test_functor_analysis< TEST_EXECSPACE >();
}

}

/*--------------------------------------------------------------------------*/

#endif /* #ifndef TEST_FUNCTOR_ANALYSIS_HPP */

