FM / hof

/usr/include/boost/hof

Name	Size	Mode	Actions
detail/	-	0755	rm
alias.hpp	5552	0644	edit dl rm
always.hpp	4261	0644	edit dl rm
apply.hpp	8363	0644	edit dl rm
apply_eval.hpp	4428	0644	edit dl rm
arg.hpp	3148	0644	edit dl rm
capture.hpp	5419	0644	edit dl rm
combine.hpp	3877	0644	edit dl rm
compose.hpp	5042	0644	edit dl rm
config.hpp	6149	0644	edit dl rm
construct.hpp	8774	0644	edit dl rm
decay.hpp	1790	0644	edit dl rm
decorate.hpp	6329	0644	edit dl rm
eval.hpp	2400	0644	edit dl rm
first_of.hpp	7100	0644	edit dl rm
fix.hpp	6314	0644	edit dl rm
flip.hpp	2690	0644	edit dl rm
flow.hpp	5060	0644	edit dl rm
fold.hpp	5000	0644	edit dl rm
function.hpp	3129	0644	edit dl rm
function_param_limit.hpp	1658	0644	edit dl rm
identity.hpp	1884	0644	edit dl rm
if.hpp	3314	0644	edit dl rm
implicit.hpp	4041	0644	edit dl rm
indirect.hpp	3268	0644	edit dl rm
infix.hpp	6043	0644	edit dl rm
is_invocable.hpp	1706	0644	edit dl rm
is_unpackable.hpp	3341	0644	edit dl rm
lambda.hpp	6458	0644	edit dl rm
lazy.hpp	8729	0644	edit dl rm
lift.hpp	3752	0644	edit dl rm
limit.hpp	3817	0644	edit dl rm
match.hpp	3331	0644	edit dl rm
mutable.hpp	1988	0644	edit dl rm
pack.hpp	12747	0644	edit dl rm
partial.hpp	8307	0644	edit dl rm
pipable.hpp	6227	0644	edit dl rm
placeholders.hpp	13799	0644	edit dl rm
proj.hpp	7517	0644	edit dl rm
protect.hpp	2145	0644	edit dl rm
repeat.hpp	4184	0644	edit dl rm
repeat_while.hpp	5154	0644	edit dl rm
result.hpp	3644	0644	edit dl rm
returns.hpp	8607	0644	edit dl rm
reveal.hpp	12187	0644	edit dl rm
reverse_fold.hpp	5271	0644	edit dl rm
rotate.hpp	2576	0644	edit dl rm
static.hpp	2395	0644	edit dl rm
tap.hpp	2118	0644	edit dl rm
unpack.hpp	5588	0644	edit dl rm
unpack_sequence.hpp	1810	0644	edit dl rm
version.hpp	679	0644	edit dl rm

Edit: /usr/include/boost/hof/pipable.hpp (6227B)

/*=============================================================================
    Copyright (c) 2012 Paul Fultz II
    pipable.h
    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/

#ifndef BOOST_HOF_GUARD_FUNCTION_PIPABLE_H
#define BOOST_HOF_GUARD_FUNCTION_PIPABLE_H

/// pipable
/// =======
/// 
/// Description
/// -----------
/// 
/// The `pipable` function adaptor provides an extension method. The first
/// parameter of the function can be piped into the function using the pipe
/// `|` operator. This can be especially convenient when there are a lot of
/// nested function calls. Functions that are made pipable can still be called
/// the traditional way without piping in the first parameter.
/// 
/// Synopsis
/// --------
/// 
///     template<class F>
///     constexpr pipable_adaptor<F> pipable(F f);
/// 
/// Semantics
/// ---------
/// 
///     assert(x | pipable(f)(ys...) == f(x, ys...));
/// 
/// Requirements
/// ------------
/// 
/// F must be:
/// 
/// * [ConstInvocable](ConstInvocable)
/// * MoveConstructible
/// 
/// Example
/// -------
/// 
///     #include <boost/hof.hpp>
///     #include <cassert>
///     using namespace boost::hof;
/// 
///     struct sum
///     {
///         template<class T, class U>
///         T operator()(T x, U y) const
///         {
///             return x+y;
///         }
///     };
/// 
///     int main() {
///         assert(3 == (1 | pipable(sum())(2)));
///         assert(3 == pipable(sum())(1, 2));
///     }
/// 
/// References
/// ----------
/// 
/// * [Extension methods](<Extension methods>)
///

#include <boost/hof/first_of.hpp>
#include <boost/hof/pack.hpp>
#include <boost/hof/detail/delegate.hpp>
#include <boost/hof/detail/move.hpp>
#include <boost/hof/detail/make.hpp>
#include <boost/hof/detail/static_const_var.hpp>
#include <boost/hof/limit.hpp>

namespace boost { namespace hof { 
 
template<class F>
struct pipable_adaptor;

namespace detail {

template<class F, class Pack>
struct pipe_closure : F, Pack
{
    
    template<class X, class P>
    constexpr pipe_closure(X&& fp, P&& packp) 
    BOOST_HOF_NOEXCEPT(BOOST_HOF_IS_NOTHROW_CONSTRUCTIBLE(F, X&&) && BOOST_HOF_IS_NOTHROW_CONSTRUCTIBLE(Pack, P&&))
    : F(BOOST_HOF_FORWARD(X)(fp)), Pack(BOOST_HOF_FORWARD(P)(packp))
    {}

template<class... Ts>
    constexpr const F& base_function(Ts&&...) const noexcept
    {
        return *this;
    }

template<class... Ts>
    constexpr const Pack& get_pack(Ts&&...) const noexcept
    {
        return *this;
    }

template<class A>
    struct invoke
    {
        A a;
        const pipe_closure * self;
        template<class X>
        constexpr invoke(X&& xp, const pipe_closure * selfp) 
        BOOST_HOF_NOEXCEPT(BOOST_HOF_IS_NOTHROW_CONSTRUCTIBLE(A, X&&))
        : a(BOOST_HOF_FORWARD(X)(xp)), self(selfp)
        {}

BOOST_HOF_RETURNS_CLASS(invoke);

template<class... Ts>
        constexpr BOOST_HOF_SFINAE_RESULT(const F&, id_<A>, id_<Ts>...) 
        operator()(Ts&&... xs) const BOOST_HOF_SFINAE_RETURNS
        (BOOST_HOF_RETURNS_STATIC_CAST(const F&)(*BOOST_HOF_CONST_THIS->self)(BOOST_HOF_FORWARD(A)(a), BOOST_HOF_FORWARD(Ts)(xs)...));
    };

BOOST_HOF_RETURNS_CLASS(pipe_closure);

template<class A>
    constexpr BOOST_HOF_SFINAE_RESULT(const Pack&, id_<invoke<A&&>>) 
    operator()(A&& a) const BOOST_HOF_SFINAE_RETURNS
    (BOOST_HOF_MANGLE_CAST(const Pack&)(BOOST_HOF_CONST_THIS->get_pack(a))(invoke<A&&>(BOOST_HOF_FORWARD(A)(a), BOOST_HOF_CONST_THIS)));
};

template<class F, class Pack>
constexpr auto make_pipe_closure(F f, Pack&& p) BOOST_HOF_RETURNS
(
    pipe_closure<F, typename std::remove_reference<Pack>::type>(BOOST_HOF_RETURNS_STATIC_CAST(F&&)(f), BOOST_HOF_FORWARD(Pack)(p))
);

template<class Derived, class F>
struct pipe_pack
{
    template<class... Ts>
    constexpr const F& get_function(Ts&&...) const noexcept
    {
        return static_cast<const F&>(static_cast<const Derived&>(*this));
    }

BOOST_HOF_RETURNS_CLASS(pipe_pack);

template<class... Ts, class=typename std::enable_if<
        (sizeof...(Ts) < function_param_limit<F>::value)
    >::type>
    constexpr auto operator()(Ts&&... xs) const BOOST_HOF_RETURNS
    (make_pipe_closure(BOOST_HOF_RETURNS_C_CAST(F&&)(BOOST_HOF_CONST_THIS->get_function(xs...)), boost::hof::pack_forward(BOOST_HOF_FORWARD(Ts)(xs)...)));
};
    
template<class A, class F, class Pack>
constexpr auto operator|(A&& a, const pipe_closure<F, Pack>& p) BOOST_HOF_RETURNS
(p(BOOST_HOF_FORWARD(A)(a)));

}

template<class F>
struct pipable_adaptor 
: detail::basic_first_of_adaptor<detail::callable_base<F>, detail::pipe_pack<pipable_adaptor<F>, detail::callable_base<F>> >
{
    typedef detail::basic_first_of_adaptor<detail::callable_base<F>, detail::pipe_pack<pipable_adaptor<F>, detail::callable_base<F>> > base;
    typedef pipable_adaptor fit_rewritable_tag;

BOOST_HOF_INHERIT_CONSTRUCTOR(pipable_adaptor, base);

constexpr const detail::callable_base<F>& base_function() const noexcept
    {
        return *this;
    }
};

template<class A, class F>
constexpr auto operator|(A&& a, const pipable_adaptor<F>& p) BOOST_HOF_RETURNS
(p(BOOST_HOF_FORWARD(A)(a)));

BOOST_HOF_DECLARE_STATIC_VAR(pipable, detail::make<pipable_adaptor>);

namespace detail {

template<class F>
struct static_function_wrapper;

// Operators for static_function_wrapper adaptor
template<class A, class F>
auto operator|(A&& a, const boost::hof::detail::static_function_wrapper<F>& f) BOOST_HOF_RETURNS
(f(BOOST_HOF_FORWARD(A)(a)));

template<class F>
struct static_default_function;

// Operators for static_default_function adaptor
template<class A, class F>
auto operator|(A&& a, const boost::hof::detail::static_default_function<F>& f) BOOST_HOF_RETURNS
(f(BOOST_HOF_FORWARD(A)(a)));

}

template<class F>
struct static_;

// Operators for static_ adaptor
template<class A, class F>
auto operator|(A&& a, static_<F> f) BOOST_HOF_RETURNS
(f.base_function().base_function()(BOOST_HOF_FORWARD(A)(a)));

}} // namespace boost::hof

#endif

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