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// ==========================================================================
// SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2018, Knut Reinert, FU Berlin
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or 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 copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Knut Reinert or the FU Berlin nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL KNUT REINERT OR THE FU BERLIN BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
//
// ==========================================================================
// Author: David Weese <david.weese@fu-berlin.de>
// ==========================================================================
// Packed pair specialization.
// ==========================================================================
#ifndef SEQAN_INCLUDE_SEQAN_BASIC_PAIR_PACKED_H_
#define SEQAN_INCLUDE_SEQAN_BASIC_PAIR_PACKED_H_
namespace seqan {
// ============================================================================
// Forwards
// ============================================================================
// ============================================================================
// Tags, Classes, Enums
// ============================================================================
// ----------------------------------------------------------------------------
// Specialization Packed Pair
// ----------------------------------------------------------------------------
/*!
* @class PackedPair
* @extends Pair
* @headerfile <seqan/basic.h>
* @brief Stores two arbitrary objects. Saves memory by disabling memory alignment.
*
* @signature template <typename T1, typename T2>
* class Pair<T1, T2, Pack>;
*
* @tparam T1 The type of the first object.
* @tparam T2 The type of the second object.
*
* Useful for external storage.
*
* Memory access could be slower. Direct access to members by pointers is not allowed on all platforms.
*
* Functions <tt>value()</tt> is not implemented yet since there it would require using a proxy. Use
* <tt>getValue()</tt>, <tt>assignValue()</tt>, <tt>moveValue()</tt>, <tt>setValue()</tt> instead.
*/
#pragma pack(push,1)
template <typename T1, typename T2>
struct Pair<T1, T2, Pack>
{
// ------------------------------------------------------------------------
// Members
// ------------------------------------------------------------------------
T1 i1{};
T2 i2{};
// ------------------------------------------------------------------------
// Constructors
// ------------------------------------------------------------------------
// Pair() = default; does not work on gcc4.9, it issues warnings if T1/T2
// have no proper default constructor. >=gcc5.0 reports no warnings.
// Caused by yara_indexer build, demo_tutorial_indices_base and
// demo_tutorial_index_iterators_index_bidirectional_search.
#if defined(COMPILER_GCC) && (__GNUC__ <= 4)
Pair() : i1(T1()), i2(T2()) {};
#else
Pair() = default;
#endif
// NOTE(marehr) intel compiler bug in 17.x and 18.x: defaulted copy-constructor
// in classes with `#pragma pack(push, 1)` seg-faults. This leads to a
// seg-fault in yara-mapper (app test case yara).
#if defined(COMPILER_LINTEL) || defined(COMPILER_WINTEL)
Pair(Pair const & p) : i1(p.i1), i2(p.i2) {};
#else
Pair(Pair const &) = default;
#endif
Pair(Pair &&) = default;
~Pair() = default;
Pair & operator=(Pair const &) = default;
Pair & operator=(Pair &&) = default;
Pair(T1 const & _i1, T2 const & _i2) : i1(_i1), i2(_i2) {}
template <typename T1_, typename T2_, typename TSpec__>
// TODO(holtgrew): explicit?
Pair(Pair<T1_, T2_, TSpec__> const &_p) :
i1(getValueI1(_p)), i2(getValueI2(_p))
{}
};
#pragma pack(pop)
// ============================================================================
// Metafunctions
// ============================================================================
template <typename T1, typename T2>
struct MakePacked< Pair<T1, T2> >
{
typedef Pair<T1, T2, Pack> Type;
};
// ============================================================================
// Functions
// ============================================================================
// ----------------------------------------------------------------------------
// Function set().
// ----------------------------------------------------------------------------
// References to members to packed structs do not work. Always copy.
template <typename T1, typename T2>
inline void
set(Pair<T1, T2, Pack> & p1, Pair<T1, T2, Pack> & p2)
{
p1 = p2;
}
// ----------------------------------------------------------------------------
// Function move().
// ----------------------------------------------------------------------------
// References to members to packed structs do not work. Always copy.
template <typename T1, typename T2>
inline void
move(Pair<T1, T2, Pack> & p1, Pair<T1, T2, Pack> & p2)
{
p1 = p2;
}
// -----------------------------------------------------------------------
// Function setValueIX()
// -----------------------------------------------------------------------
// References to members to packed structs do not work. Always copy.
template <typename T1, typename T2, typename T>
inline void setValueI1(Pair<T1, T2, Pack> & pair, T const & _i)
{
pair.i1 = _i;
}
template <typename T1, typename T2, typename T>
inline void setValueI2(Pair<T1, T2, Pack> & pair, T const & _i)
{
pair.i2 = _i;
}
// -----------------------------------------------------------------------
// Function moveValueIX()
// -----------------------------------------------------------------------
// References to members to packed structs do not work. Always copy.
template <typename T1, typename T2, typename T>
inline void moveValueI1(Pair<T1, T2, Pack> & pair, T & _i)
{
pair.i1 = _i;
}
template <typename T1, typename T2, typename T>
inline void moveValueI2(Pair<T1, T2, Pack> & pair, T & _i)
{
pair.i2 = _i;
}
} // namespace seqan
#endif // #ifndef SEQAN_INCLUDE_SEQAN_BASIC_PAIR_PACKED_H_
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