atp.impl.h

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//
// Copyright (c) 2014 Limit Point Systems, Inc. 
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//


#ifndef ATP_IMPL_H
#define ATP_IMPL_H

#ifndef SHEAF_DLL_SPEC_H
#include "SheafSystem/sheaf_dll_spec.h"
#endif

#ifndef ATP_H
#include "SheafSystem/atp.h"
#endif

namespace fiber_bundle 
{

namespace atp_algebra
{

//==============================================================================
// ATP FACET:
//==============================================================================

template <typename T0, typename T1> 
typename tensor_traits<static_cast<int>(T0::P) - static_cast<int>(T1::P), typename T0::vector_space_type>::atp_type*
hook(const T0& x0, const T1& x1)
{
  // Preconditions:

  require(precondition_of(hook(x0, x1, *result)));

  // Body:

  typedef typename T0::vector_space_type VST;
  typedef typename tensor_traits<static_cast<int>(T0::P) - static_cast<int>(T1::P), VST>::atp_type return_type;

  // Can not cast to the return type here because the compile uses the
  // at0_lite conversion operator to double to find a conversion path
  // for hook(T0&, T1&, bool).

  atp_lite* result = x0.atp_prototype(x0.p() - x1.p()).clone();

  hook(x0, x1, *result);

  // Postconditions:

  ensure(result != 0);
  ensure(postcondition_of(hook(x0, x1, *result)));

  // Exit:

  return reinterpret_cast<return_type*>(result);
}


template <typename T0, typename T1> 
typename tensor_traits<static_cast<int>(T0::P) + static_cast<int>(T1::P), typename T0::vector_space_type>::atp_type*
wedge(const T0& x0, const T1& x1)
{
  // Preconditions:

  require(precondition_of(wedge(x0, x1, *result)));

  // Body:

  typedef typename T0::vector_space_type VST;
  typedef typename tensor_traits<static_cast<int>(T0::P) + static_cast<int>(T1::P), VST>::atp_type return_type;

  // Can not cast to the return type here because the compile uses the
  // at0_lite conversion operator to double to find a conversion path
  // for wedge(T0&, T1&, bool).

  atp_lite* result = x0.atp_prototype(x0.p() + x1.p()).clone();

  wedge(x0, x1, *result);

  // Postconditions:

  ensure(result != 0);
  ensure(postcondition_of(wedge(x0, x1, *result)));

  // Exit:

  return reinterpret_cast<return_type*>(result);
}

template <typename T0, typename T1> 
typename tensor_traits<static_cast<int>(T0::P) - static_cast<int>(T1::P), typename T0::vector_space_type>::atp_type*
hook(const T0& x0, const T1& x1, bool xauto_access)
{
  // Preconditions:

  require(precondition_of(hook(x0, x1, *result, xauto_access)));

  // Body:

  typedef typename T0::vector_space_type VST;
  typedef typename tensor_traits<static_cast<int>(T0::P) - static_cast<int>(T1::P), VST>::atp_type return_type;

  return_type* result =
    reinterpret_cast<return_type*>(x0.new_atp(x0.p(xauto_access) - x1.p(xauto_access),
                                              xauto_access));

  hook(x0, x1, *result, xauto_access);

  // Postconditions:

  ensure(result != 0);
  ensure(postcondition_of(hook(x0, x1, *result, xauto_access)));

  // Exit:

  return result;
}

template <typename T0, typename T1> 
typename tensor_traits<static_cast<int>(T0::P) + static_cast<int>(T1::P), typename T0::vector_space_type>::atp_type*
wedge(const T0& x0, const T1& x1, bool xauto_access)
{
  // Preconditions:

  require(precondition_of(wedge(x0, x1, *result, xauto_access)));

  // Body:

  typedef typename T0::vector_space_type VST;
  typedef typename tensor_traits<static_cast<int>(T0::P) + static_cast<int>(T1::P), VST>::atp_type return_type;

  return_type* result =
    reinterpret_cast<return_type*>(x0.new_atp(x0.p(xauto_access) + x1.p(xauto_access), xauto_access));

  wedge(x0, x1, *result, xauto_access);

  // Postconditions:

  ensure(result != 0);
  ensure(postcondition_of(wedge(x0, x1, *result, xauto_access)));

  // Exit:

  return result;
}
  
} // namespace atp_algebra
  
} // namespace fiber_bundle

#endif // ifndef ATP_IMPL_H