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-rw-r--r--compat/macros.hpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/compat/macros.hpp b/compat/macros.hpp
index 564dcc8d..abe89c73 100644
--- a/compat/macros.hpp
+++ b/compat/macros.hpp
@@ -64,5 +64,10 @@ constexpr force_inline void static_warn<true>() {}
#define static_warning(cond) \
static_warn<(cond)>(); \
+#define progn(...) (([&] { __VA_ARGS__ })())
+#define prog1(x, ...) (([&] { auto _ret1324 = (x); do { __VA_ARGS__; } while (0); return _ret1324; })())
+
// end c++-only macros
#endif
+
+#define once_only(...) do { static bool once__ = false; if (!once__) { once__ = true; __VA_ARGS__; } } while(false)