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/lambda.hpp (6458B)

/*=============================================================================
    Copyright (c) 2014 Paul Fultz II
    lambda.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_LAMBDA_H
#define BOOST_HOF_GUARD_FUNCTION_LAMBDA_H

/// BOOST_HOF_STATIC_LAMBDA
/// =================
/// 
/// Description
/// -----------
/// 
/// The `BOOST_HOF_STATIC_LAMBDA` macro allows initializing non-capturing lambdas at
/// compile-time in a `constexpr` expression.
/// 
/// Example
/// -------
/// 
///     #include <boost/hof.hpp>
///     #include <cassert>
/// 
///     const constexpr auto add_one = BOOST_HOF_STATIC_LAMBDA(int x)
///     {
///         return x + 1;
///     };
/// 
///     int main() {
///         assert(3 == add_one(2));
///     }
/// 
/// BOOST_HOF_STATIC_LAMBDA_FUNCTION
/// ==========================
/// 
/// Description
/// -----------
/// 
/// The `BOOST_HOF_STATIC_LAMBDA_FUNCTION` macro allows initializing a global
/// function object that contains non-capturing lambdas. It also ensures that
/// the global function object has a unique address across translation units.
/// This helps prevent possible ODR-violations.
/// 
/// By default, all functions defined with `BOOST_HOF_STATIC_LAMBDA_FUNCTION` use
/// the `boost::hof::reveal` adaptor to improve error messages.
/// 
/// Example
/// -------
/// 
///     #include <boost/hof.hpp>
///     #include <cassert>
/// 
///     BOOST_HOF_STATIC_LAMBDA_FUNCTION(add_one) = [](int x)
///     {
///         return x + 1;
///     };
///     int main() {
///         assert(3 == add_one(2));
///     }
///

#include <boost/hof/config.hpp>

// TODO: Move this to a detail header
#if !BOOST_HOF_HAS_CONSTEXPR_LAMBDA || !BOOST_HOF_HAS_INLINE_LAMBDAS

#include <type_traits>
#include <utility>
#include <boost/hof/detail/result_of.hpp>
#include <boost/hof/reveal.hpp>
#include <boost/hof/detail/constexpr_deduce.hpp>
#include <boost/hof/function.hpp>

#ifndef BOOST_HOF_REWRITE_STATIC_LAMBDA
#ifdef _MSC_VER
#define BOOST_HOF_REWRITE_STATIC_LAMBDA 1
#else
#define BOOST_HOF_REWRITE_STATIC_LAMBDA 0
#endif
#endif

namespace boost { namespace hof {

namespace detail {

template<class F>
struct static_function_wrapper
{
    // Default constructor necessary for MSVC
    constexpr static_function_wrapper()
    {}

static_assert(BOOST_HOF_IS_EMPTY(F), "Function or lambda expression must be empty");

struct failure
    : failure_for<F>
    {};

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

BOOST_HOF_RETURNS_CLASS(static_function_wrapper);

template<class... Ts>
    BOOST_HOF_SFINAE_RESULT(const F&, id_<Ts>...) 
    operator()(Ts&&... xs) const BOOST_HOF_SFINAE_RETURNS
    (
        BOOST_HOF_RETURNS_REINTERPRET_CAST(const F&)(*BOOST_HOF_CONST_THIS)(BOOST_HOF_FORWARD(Ts)(xs)...)
    );
};

struct static_function_wrapper_factor
{
    constexpr static_function_wrapper_factor()
    {}
    template<class F>
    constexpr static_function_wrapper<F> operator= (const F&) const
    {
        // static_assert(std::is_literal_type<static_function_wrapper<F>>::value, "Function wrapper not a literal type");
        return {};
    }
};

#if BOOST_HOF_REWRITE_STATIC_LAMBDA
template<class T, class=void>
struct is_rewritable
: std::false_type
{};

template<class T>
struct is_rewritable<T, typename detail::holder<
    typename T::fit_rewritable_tag
>::type>
: std::is_same<typename T::fit_rewritable_tag, T>
{};

template<class T, class=void>
struct is_rewritable1
: std::false_type
{};

template<class T>
struct is_rewritable1<T, typename detail::holder<
    typename T::fit_rewritable1_tag
>::type>
: std::is_same<typename T::fit_rewritable1_tag, T>
{};

template<class T, class=void>
struct rewrite_lambda;

template<template<class...> class Adaptor, class... Ts>
struct rewrite_lambda<Adaptor<Ts...>, typename std::enable_if<
    is_rewritable<Adaptor<Ts...>>::value
>::type>
{
    typedef Adaptor<typename rewrite_lambda<Ts>::type...> type;
};

template<template<class...> class Adaptor, class T, class... Ts>
struct rewrite_lambda<Adaptor<T, Ts...>, typename std::enable_if<
    is_rewritable1<Adaptor<T, Ts...>>::value
>::type>
{
    typedef Adaptor<typename rewrite_lambda<T>::type, Ts...> type;
};

template<class T>
struct rewrite_lambda<T, typename std::enable_if<
    std::is_empty<T>::value && 
    !is_rewritable<T>::value && 
    !is_rewritable1<T>::value
>::type>
{
    typedef static_function_wrapper<T> type;
};

template<class T>
struct rewrite_lambda<T, typename std::enable_if<
    !std::is_empty<T>::value && 
    !is_rewritable<T>::value && 
    !is_rewritable1<T>::value
>::type>
{
    typedef T type;
};

#endif

template<class T>
struct reveal_static_lambda_function_wrapper_factor
{
    constexpr reveal_static_lambda_function_wrapper_factor()
    {}
#if BOOST_HOF_REWRITE_STATIC_LAMBDA
    template<class F>
    constexpr reveal_adaptor<typename rewrite_lambda<F>::type> 
    operator=(const F&) const
    {
        return reveal_adaptor<typename rewrite_lambda<F>::type>();
    }
#elif BOOST_HOF_HAS_CONST_FOLD
    template<class F>
    constexpr const reveal_adaptor<F>& operator=(const F&) const
    {
        return reinterpret_cast<const reveal_adaptor<F>&>(static_const_var<T>());
    }
#else
    template<class F>
    constexpr reveal_adaptor<static_function_wrapper<F>> operator=(const F&) const
    {
        return {};
    }
#endif
};

}}} // namespace boost::hof

#endif

#if BOOST_HOF_HAS_CONSTEXPR_LAMBDA
#define BOOST_HOF_STATIC_LAMBDA []
#else
#define BOOST_HOF_DETAIL_MAKE_STATIC BOOST_HOF_DETAIL_CONSTEXPR_DEDUCE boost::hof::detail::static_function_wrapper_factor()
#define BOOST_HOF_STATIC_LAMBDA BOOST_HOF_DETAIL_MAKE_STATIC = []
#endif

#if BOOST_HOF_HAS_INLINE_LAMBDAS
#define BOOST_HOF_STATIC_LAMBDA_FUNCTION BOOST_HOF_STATIC_FUNCTION
#else
#define BOOST_HOF_DETAIL_MAKE_REVEAL_STATIC(T) BOOST_HOF_DETAIL_CONSTEXPR_DEDUCE_UNIQUE(T) boost::hof::detail::reveal_static_lambda_function_wrapper_factor<T>()
#define BOOST_HOF_STATIC_LAMBDA_FUNCTION(name) \
struct fit_private_static_function_ ## name {}; \
BOOST_HOF_STATIC_AUTO_REF name = BOOST_HOF_DETAIL_MAKE_REVEAL_STATIC(fit_private_static_function_ ## name)
#endif

#endif

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