/*
 * Copyright (c) 2011-2019, The DART development contributors
 * All rights reserved.
 *
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 *   https://github.com/dartsim/dart/blob/master/LICENSE
 *
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 *   without modification, are permitted provided that the following
 *   conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
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 */

#ifndef DART_COMMON_DETAIL_SPECIALIZEDFORASPECT_HPP_
#define DART_COMMON_DETAIL_SPECIALIZEDFORASPECT_HPP_

#include "dart/common/SpecializedForAspect.hpp"

// This preprocessor token should only be used by the unittest that is
// responsible for checking that the specialized routines are being used to
// access specialized Aspects
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
bool usedSpecializedAspectAccess;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

namespace dart {
namespace common {

//==============================================================================
template <class SpecAspect>
SpecializedForAspect<SpecAspect>::SpecializedForAspect()
{
  mSpecAspectIterator
      = mAspectMap
            .insert(std::make_pair<std::type_index, std::unique_ptr<Aspect>>(
                typeid(SpecAspect), nullptr))
            .first;
}

//==============================================================================
template <class SpecAspect>
template <class T>
bool SpecializedForAspect<SpecAspect>::has() const
{
  return _has(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
T* SpecializedForAspect<SpecAspect>::get()
{
  return _get(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
const T* SpecializedForAspect<SpecAspect>::get() const
{
  return _get(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::set(const T* aspect)
{
  _set(type<T>(), aspect);
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::set(std::unique_ptr<T>&& aspect)
{
  _set(type<T>(), std::move(aspect));
}

//==============================================================================
template <class SpecAspect>
template <class T, typename... Args>
T* SpecializedForAspect<SpecAspect>::createAspect(Args&&... args)
{
  return _createAspect(type<T>(), std::forward<Args>(args)...);
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::removeAspect()
{
  _removeAspect(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
std::unique_ptr<T> SpecializedForAspect<SpecAspect>::releaseAspect()
{
  return _releaseAspect(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
constexpr bool SpecializedForAspect<SpecAspect>::isSpecializedFor()
{
  return _isSpecializedFor(type<T>());
}

//==============================================================================
template <class SpecAspect>
template <class T>
bool SpecializedForAspect<SpecAspect>::_has(type<T>) const
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  return Composite::has<T>();
}

//==============================================================================
template <class SpecAspect>
bool SpecializedForAspect<SpecAspect>::_has(type<SpecAspect>) const
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  return (mSpecAspectIterator->second.get() != nullptr);
}

//==============================================================================
template <class SpecAspect>
template <class T>
T* SpecializedForAspect<SpecAspect>::_get(type<T>)
{
  return Composite::get<T>();
}

//==============================================================================
template <class SpecAspect>
SpecAspect* SpecializedForAspect<SpecAspect>::_get(type<SpecAspect>)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  return static_cast<SpecAspect*>(mSpecAspectIterator->second.get());
}

//==============================================================================
template <class SpecAspect>
template <class T>
const T* SpecializedForAspect<SpecAspect>::_get(type<T>) const
{
  return Composite::get<T>();
}

//==============================================================================
template <class SpecAspect>
const SpecAspect* SpecializedForAspect<SpecAspect>::_get(type<SpecAspect>) const
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  return static_cast<SpecAspect*>(mSpecAspectIterator->second.get());
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::_set(type<T>, const T* aspect)
{
  Composite::set<T>(aspect);
}

//==============================================================================
template <class SpecAspect>
void SpecializedForAspect<SpecAspect>::_set(
    type<SpecAspect>, const SpecAspect* aspect)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  if (aspect)
  {
    mSpecAspectIterator->second = aspect->cloneAspect();
    addToComposite(mSpecAspectIterator->second.get());
  }
  else
  {
    mSpecAspectIterator->second = nullptr;
  }
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::_set(
    type<T>, std::unique_ptr<T>&& aspect)
{
  Composite::set<T>(std::move(aspect));
}

//==============================================================================
template <class SpecAspect>
void SpecializedForAspect<SpecAspect>::_set(
    type<SpecAspect>, std::unique_ptr<SpecAspect>&& aspect)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  mSpecAspectIterator->second = std::move(aspect);
  addToComposite(mSpecAspectIterator->second.get());
}

//==============================================================================
template <class SpecAspect>
template <class T, typename... Args>
T* SpecializedForAspect<SpecAspect>::_createAspect(type<T>, Args&&... args)
{
  return Composite::createAspect<T>(std::forward<Args>(args)...);
}

//==============================================================================
template <class SpecAspect>
template <typename... Args>
SpecAspect* SpecializedForAspect<SpecAspect>::_createAspect(
    type<SpecAspect>, Args&&... args)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  SpecAspect* aspect = new SpecAspect(std::forward<Args>(args)...);
  mSpecAspectIterator->second = std::unique_ptr<SpecAspect>(aspect);
  addToComposite(aspect);

  return aspect;
}

//==============================================================================
template <class SpecAspect>
template <class T>
void SpecializedForAspect<SpecAspect>::_removeAspect(type<T>)
{
  Composite::removeAspect<T>();
}

//==============================================================================
template <class SpecAspect>
void SpecializedForAspect<SpecAspect>::_removeAspect(type<SpecAspect>)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  DART_COMMON_CHECK_ILLEGAL_ASPECT_ERASE(erase, SpecAspect, DART_BLANK);

  removeFromComposite(mSpecAspectIterator->second.get());
  mSpecAspectIterator->second = nullptr;
}

//==============================================================================
template <class SpecAspect>
template <class T>
std::unique_ptr<T> SpecializedForAspect<SpecAspect>::_releaseAspect(type<T>)
{
  return Composite::releaseAspect<T>();
}

//==============================================================================
template <class SpecAspect>
std::unique_ptr<SpecAspect> SpecializedForAspect<SpecAspect>::_releaseAspect(
    type<SpecAspect>)
{
#ifdef DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS
  usedSpecializedAspectAccess = true;
#endif // DART_UNITTEST_SPECIALIZED_ASPECT_ACCESS

  DART_COMMON_CHECK_ILLEGAL_ASPECT_ERASE(release, SpecAspect, nullptr);

  removeFromComposite(mSpecAspectIterator->second.get());
  std::unique_ptr<SpecAspect> extraction(
      static_cast<SpecAspect*>(mSpecAspectIterator->second.release()));

  return extraction;
}

//==============================================================================
template <class SpecAspect>
template <class T>
constexpr bool SpecializedForAspect<SpecAspect>::_isSpecializedFor(type<T>)
{
  return false;
}

//==============================================================================
template <class SpecAspect>
constexpr bool SpecializedForAspect<SpecAspect>::_isSpecializedFor(
    type<SpecAspect>)
{
  return true;
}

} // namespace common
} // namespace dart

#endif // DART_COMMON_DETAIL_SPECIALIZEDFORASPECT_HPP_
