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#pragma once
#include "alloc_functor.hpp"
template <class Return>
template <class... Args>
auto InvokeReturnWrapper<Return>::call(Args &&...args) -> Return
{
return std::invoke(std::forward<Args>(args)...);
}
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define ALLOC_FUNCTOR_TEMPLATE \
template <class Function, class Allocator, class Return, class... Args>
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define ALLOC_FUNCTOR AllocFunctor<Function, Allocator, Return(Args...)>
ALLOC_FUNCTOR_TEMPLATE
ALLOC_FUNCTOR::AllocFunctor(Target &&function)
: _function(
std::piecewise_construct,
std::forward_as_tuple(std::move(function)),
std::forward_as_tuple()
)
{
}
ALLOC_FUNCTOR_TEMPLATE
ALLOC_FUNCTOR::AllocFunctor(const Target &function, const Alloc &allocator)
: _function(
std::piecewise_construct,
std::forward_as_tuple(function),
std::forward_as_tuple(allocator)
)
{
}
ALLOC_FUNCTOR_TEMPLATE
ALLOC_FUNCTOR::AllocFunctor(const Target &function, Alloc &&allocator)
: _function(
std::piecewise_construct,
std::forward_as_tuple(function),
std::forward_as_tuple(std::move(allocator))
)
{
}
ALLOC_FUNCTOR_TEMPLATE
ALLOC_FUNCTOR::AllocFunctor(Target &&function, Alloc &&allocator)
: _function(
std::piecewise_construct,
std::forward_as_tuple(std::move(function)),
std::forward_as_tuple(std::move(allocator))
)
{
}
ALLOC_FUNCTOR_TEMPLATE
auto ALLOC_FUNCTOR::operator()(Args &&...args) -> Return
{
using Invoker = InvokeReturnWrapper<Return>;
return Invoker::call(_function.first(), std::forward<Args>(args)...);
}
ALLOC_FUNCTOR_TEMPLATE
auto ALLOC_FUNCTOR::target() const -> const Target &
{
return _function.first();
}
ALLOC_FUNCTOR_TEMPLATE
auto ALLOC_FUNCTOR::get_allocator() const -> const Alloc &
{
return _function.second();
}
ALLOC_FUNCTOR_TEMPLATE
auto ALLOC_FUNCTOR::clone() const -> AllocFunctor *
{
using AllocTraits = std::allocator_traits<Alloc>;
using AllocHelper = typename RebindAllocHelper<AllocTraits, AllocFunctor>::type;
auto alloc_helper = AllocHelper(_function.second());
using Destructor = AllocDestructor<AllocHelper>;
auto hold = std::unique_ptr<AllocFunctor, Destructor>(
alloc_helper.allocate(1),
_Dp(alloc_helper, 1)
);
::new (static_cast<void *>(hold.get()))
AllocFunctor(_function.first(), _Alloc(alloc_helper));
return hold.release();
}
ALLOC_FUNCTOR_TEMPLATE
void ALLOC_FUNCTOR::destroy() noexcept
{
_function.~CompressedPair<Target, Alloc>();
}
ALLOC_FUNCTOR_TEMPLATE
void ALLOC_FUNCTOR::destroy_and_delete(AllocFunctor *functor)
{
using AllocTraits = std::allocator_traits<Alloc>;
using FunctorAlloc = typename RebindAllocHelper<AllocTraits, AllocFunctor>::type;
auto functor_alloc = FunctorAlloc(functor->get_allocator());
functor->destroy();
functor_alloc.deallocate(functor, 1);
}
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define DEFAULT_ALLOC_FUNCTOR_TEMPLATE \
template <class Function, class Return, class... Args>
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define DEFAULT_ALLOC_FUNCTOR DefaultAllocFunctor<Function, Return(Args...)>
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
DEFAULT_ALLOC_FUNCTOR::DefaultAllocFunctor(Target &&function)
: _function(std::move(function))
{
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
DEFAULT_ALLOC_FUNCTOR::DefaultAllocFunctor(const Target &function) : _function(function)
{
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
auto DEFAULT_ALLOC_FUNCTOR::operator()(Args &&...args) -> Return
{
using Invoker = InvokeReturnWrapper<Return>;
return Invoker::call(_function, std::forward<Args>(args)...);
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
auto DEFAULT_ALLOC_FUNCTOR::target() const -> const Target &
{
return _function;
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
auto DEFAULT_ALLOC_FUNCTOR::clone() const -> DefaultAllocFunctor *
{
std::allocator<DefaultAllocFunctor> allocator;
DefaultAllocFunctor *functor_ptr = allocator.allocate(1);
// NOLINTNEXTLINE(cppcoreguidelines-owning-memory)
auto *res = ::new (static_cast<void *>(functor_ptr)) DefaultAllocFunctor(_function);
return res;
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
void DEFAULT_ALLOC_FUNCTOR::destroy() noexcept
{
_function.~_Target();
}
DEFAULT_ALLOC_FUNCTOR_TEMPLATE
void DEFAULT_ALLOC_FUNCTOR::destroy_and_delete(DefaultAllocFunctor *function)
{
function->destroy();
std::allocator<DefaultAllocFunctor> allocator;
allocator.deallocate(function, 1);
}
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