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// ==========================================================================
// SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2026, 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>
// ==========================================================================
#ifndef SEQAN_HEADER_PIPE_FILTER_H
#define SEQAN_HEADER_PIPE_FILTER_H
namespace seqan2
{
//namespace seqan2_NAMESPACE_PIPELINING
//{
template <typename TValue, typename TResult = typename Value<TValue, 1>::Type>
struct filterI1 : public std::function<TResult(TValue)>
{
inline TResult operator() (const TValue & x) const
{
return x.i1;
}
};
template <typename TValue, typename TResult = typename Value<TValue, 2>::Type>
struct filterI2 : public std::function<TResult(TValue)>
{
inline TResult operator() (const TValue & x) const
{
return x.i2;
}
};
template <typename TValue, typename TResult = typename Value<TValue, 3>::Type>
struct filterI3 : public std::function<TResult(TValue)>
{
inline TResult operator() (const TValue & x) const
{
return x.i3;
}
};
template < typename TFunctor >
struct Filter;
template < typename TInput, typename TFunctor >
struct Value< Pipe< TInput, Filter<TFunctor> > >
{
typedef typename TFunctor::result_type Type;
};
/*!
* @class Filter
* @extends Pipe
* @headerfile <seqan/pipe.h>
* @brief Applies a specific function to the input stream.
*
* @signature template <typename TInput, typename TFunctor>
* struct Pipe<TInput, Filter<TFunctor> >;
*
* @tparam TFunctor A unary function (see STL's <tt>unary_function</tt>). The argument type of <tt>TFunctor</tt>
* must be <tt>VALUE<TInput>::Type</tt>.
* @tparam TInput The type of the pipeline module this module reads from.
*
* The output type of this pipe is the result type of <tt>TFunctor</tt>.
*/
//////////////////////////////////////////////////////////////////////////////
// filter class
template <typename TInput, typename TFunctor >
struct Pipe< TInput, Filter<TFunctor> >
{
TInput ∈
TFunctor F;
/*!
* @fn Filter::Pipe
* @brief Constructor
*
* @signature Pipe::Pipe(in[, func]);
*
* @param[in] in Reference to an input pipe.
* @param[in] func A <tt>TFunctor</tt> object.
*/
Pipe(TInput& _in):
in(_in) {}
Pipe(TInput& _in, const TFunctor& F_) :
in(_in),
F(F_) {}
inline typename Value<Pipe>::Type const operator*() const
{
return F(*in);
}
Pipe & operator++()
{
++in;
return *this;
}
};
//}
}
#endif
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