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actions_base: reimplement HPX_DEFINE_PLAIN_ACTION_2 using C++26 reflection #7280

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actions_base: reimplement HPX_DEFINE_PLAIN_ACTION_2 using C++26 reflection #7280

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11 changes: 10 additions & 1 deletion libs/full/actions_base/include/hpx/actions_base/macros.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -486,7 +486,16 @@
HPX_DEFINE_PLAIN_ACTION_2(func, HPX_PP_CAT(func, _action)) \
/**/

#if defined(__NVCC__) || defined(__CUDACC__)
#if defined(HPX_HAVE_CXX26_REFLECTION)
// clang-format off
/// When C++26 reflection is available, HPX_DEFINE_PLAIN_ACTION_2 uses
/// reflect_action<^^func> instead of make_action_t. This eliminates the
/// need for HPX_REGISTER_ACTION while keeping the same user-facing syntax.
#define HPX_DEFINE_PLAIN_ACTION_2(func, name) \
using name = hpx::actions::reflect_action<^^func> \
/**/
// clang-format on
#elif defined(__NVCC__) || defined(__CUDACC__)
#define HPX_DEFINE_PLAIN_ACTION_2(func, name) \
struct name \
: hpx::actions::make_action< \
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