// ==========================================================================
//                 SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2024, Knut Reinert, FU Berlin
// All rights reserved.
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// ==========================================================================
// Author: Manuel Holtgrewe <manuel.holtgrewe@fu-berlin.de>
// ==========================================================================

#ifndef SEQAN_INCLUDE_SEQAN_BASIC_AGGREGATE_CONCEPT_H_
#define SEQAN_INCLUDE_SEQAN_BASIC_AGGREGATE_CONCEPT_H_

namespace seqan2 {

// ============================================================================
// Forwards
// ============================================================================

// ============================================================================
// Tags, Classes, Enums
// ============================================================================

/*!
 * @concept AggregateConcept
 *
 * @brief Aggregate types contain a fixed number of fixed-size values (pairs, triples, tuples).
 *
 * Stream output operators are not shown in the function list below, but required.
 *
 * Comparison operators are not shown in the function list below, but required.
 */

/*!
 * @fn AggregateConcept#operator<<
 * @brief Stream output operator.
 *
 * @signature TStream AggregateConcept::operator<<(stream, aggregate);
 *
 * @param[in,out] stream    The <tt>std::ostream</tt> to write to.
 * @param[in]     aggregate The aggregate type to write to the stream.
 *
 * @return TStream Reference to <tt>stream</tt> after writing <tt>aggregate</tt> to it.
 */

/*!
 * @defgroup AggregateTags Aggregate Tags
 * @brief Tags to use in aggregate (e.g. Pair, Triple, and Tuple) types.
 */

/*!
 * @tag AggregateTags#Pack
 * @headerfile <seqan/basic.h>
 * @brief Tag to mark a packed specialization that disables address alignment for members.
 *
 * @signature typedef Tag<Pack_> Pack;
 */

struct Pack_;
typedef Tag<Pack_> Pack;

// TODO(holtgrew): We need @tparam for tag in the Dox system.

/*!
 * @tag AggregateTags#BitPacked
 * @headerfile <seqan/basic.h>
 * @brief Tag to mark a bit-packed specialization that avoids to waste bits.
 *
 * @signature template <[unsinged BITSIZE1[, unsigned BITSIZE2]]>
 *            struct BitPacked;
 *
 * BITSIZE1 The number of bits for the first entry.
 *
 * BITSIZE2 The number of bits for the second entry.
 */

template <unsigned BITSIZE1 = 16, unsigned BITSIZE2 = 16>
struct BitPacked;

// ============================================================================
// Metafunctions
// ============================================================================

/*!
 * @mfn MakePacked
 * @headerfile <seqan/basic.h>
 * @brief Return the corresponding packed type for a type.
 *
 * @signature MakePacked<TAggregate>::Type;
 *
 * @tparam TAggregate The aggregate type to transform.
 *
 * @return Type The resulting packed type.
 */

template <typename T>
struct MakePacked
{
    typedef T Type;
};

// ============================================================================
// Functions
// ============================================================================

}  // namespace seqan2

#endif  // #ifndef SEQAN_INCLUDE_SEQAN_BASIC_AGGREGATE_CONCEPT_H_
