// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// 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.
// ------------------------------------------------------------------------

//! \addtogroup unwrap_spmat
//! @{

template <typename T1>
struct unwrap_spmat {
  typedef typename T1::elem_type eT;

  typedef SpMat<eT> stored_type;

  inline unwrap_spmat(const T1& A) : M(A) { arma_debug_sigprint(); }

  const SpMat<eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

template <typename eT>
struct unwrap_spmat<SpMat<eT> > {
  typedef SpMat<eT> stored_type;

  inline unwrap_spmat(const SpMat<eT>& A) : M(A) {
    arma_debug_sigprint();

    M.sync();
  }

  const SpMat<eT>& M;

  template <typename eT2>
  arma_inline bool is_alias(const SpMat<eT2>& X) const {
    return (is_same_type<eT, eT2>::yes) && (void_ptr(&M) == void_ptr(&X));
  }
};

template <typename eT>
struct unwrap_spmat<SpRow<eT> > {
  typedef SpRow<eT> stored_type;

  inline unwrap_spmat(const SpRow<eT>& A) : M(A) {
    arma_debug_sigprint();

    M.sync();
  }

  const SpRow<eT>& M;

  template <typename eT2>
  arma_inline bool is_alias(const SpMat<eT2>& X) const {
    return (is_same_type<eT, eT2>::yes) && (void_ptr(&M) == void_ptr(&X));
  }
};

template <typename eT>
struct unwrap_spmat<SpCol<eT> > {
  typedef SpCol<eT> stored_type;

  inline unwrap_spmat(const SpCol<eT>& A) : M(A) {
    arma_debug_sigprint();

    M.sync();
  }

  const SpCol<eT>& M;

  template <typename eT2>
  arma_inline bool is_alias(const SpMat<eT2>& X) const {
    return (is_same_type<eT, eT2>::yes) && (void_ptr(&M) == void_ptr(&X));
  }
};

template <typename T1, typename spop_type>
struct unwrap_spmat<SpOp<T1, spop_type> > {
  typedef typename T1::elem_type eT;

  typedef SpMat<eT> stored_type;

  inline unwrap_spmat(const SpOp<T1, spop_type>& A) : M(A) { arma_debug_sigprint(); }

  const SpMat<eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

template <typename T1, typename T2, typename spglue_type>
struct unwrap_spmat<SpGlue<T1, T2, spglue_type> > {
  typedef typename T1::elem_type eT;

  typedef SpMat<eT> stored_type;

  inline unwrap_spmat(const SpGlue<T1, T2, spglue_type>& A) : M(A) {
    arma_debug_sigprint();
  }

  const SpMat<eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

template <typename out_eT, typename T1, typename spop_type>
struct unwrap_spmat<mtSpOp<out_eT, T1, spop_type> > {
  typedef SpMat<out_eT> stored_type;

  inline unwrap_spmat(const mtSpOp<out_eT, T1, spop_type>& A) : M(A) {
    arma_debug_sigprint();
  }

  const SpMat<out_eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

template <typename out_eT, typename T1, typename T2, typename spglue_type>
struct unwrap_spmat<mtSpGlue<out_eT, T1, T2, spglue_type> > {
  typedef SpMat<out_eT> stored_type;

  inline unwrap_spmat(const mtSpGlue<out_eT, T1, T2, spglue_type>& A) : M(A) {
    arma_debug_sigprint();
  }

  const SpMat<out_eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

template <typename out_eT, typename T1, typename op_type>
struct unwrap_spmat<mtSpReduceOp<out_eT, T1, op_type> > {
  typedef SpMat<out_eT> stored_type;

  inline unwrap_spmat(const mtSpReduceOp<out_eT, T1, op_type>& A) : M(A) {
    arma_debug_sigprint();
  }

  const SpMat<out_eT> M;

  template <typename eT2>
  constexpr bool is_alias(const SpMat<eT2>&) const {
    return false;
  }
};

//! @}
