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cpp-libs
Actor Framework
Commits
cd92c25e
Commit
cd92c25e
authored
Nov 10, 2019
by
Dominik Charousset
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Fix overly eager conversion in spawn_fwd
parent
a3f250c1
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1
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1 changed file
with
18 additions
and
4 deletions
+18
-4
libcaf_core/caf/detail/spawn_fwd.hpp
libcaf_core/caf/detail/spawn_fwd.hpp
+18
-4
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libcaf_core/caf/detail/spawn_fwd.hpp
View file @
cd92c25e
...
...
@@ -22,14 +22,27 @@
#include <type_traits>
#include "caf/actor.hpp"
#include "caf/actor_traits.hpp"
namespace
caf
{
namespace
detail
{
template
<
class
T
>
struct
spawn_fwd_convert
:
std
::
false_type
{};
template
<
>
struct
spawn_fwd_convert
<
scoped_actor
>
:
std
::
true_type
{};
template
<
class
T
>
struct
spawn_fwd_convert
<
T
*>
{
static
constexpr
bool
value
=
actor_traits
<
T
>::
is_dynamically_typed
;
};
/// Converts `scoped_actor` and pointers to actors to handles of type `actor`
/// but simply forwards any other argument in the same way `std::forward` does.
template
<
class
T
>
typename
std
::
conditional
<
std
::
is_convertible
<
T
,
actor
>::
value
,
actor
,
typename
std
::
conditional
<
spawn_fwd_convert
<
typename
std
::
remove_reference
<
T
>::
type
>::
value
,
actor
,
T
&&>::
type
spawn_fwd
(
typename
std
::
remove_reference
<
T
>::
type
&
arg
)
noexcept
{
return
static_cast
<
T
&&>
(
arg
);
...
...
@@ -38,7 +51,8 @@ spawn_fwd(typename std::remove_reference<T>::type& arg) noexcept {
/// Converts `scoped_actor` and pointers to actors to handles of type `actor`
/// but simply forwards any other argument in the same way `std::forward` does.
template
<
class
T
>
typename
std
::
conditional
<
std
::
is_convertible
<
T
,
actor
>::
value
,
actor
,
typename
std
::
conditional
<
spawn_fwd_convert
<
typename
std
::
remove_reference
<
T
>::
type
>::
value
,
actor
,
T
&&>::
type
spawn_fwd
(
typename
std
::
remove_reference
<
T
>::
type
&&
arg
)
noexcept
{
static_assert
(
!
std
::
is_lvalue_reference
<
T
>::
value
,
...
...
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