[libc++][ranges] export std::ranges::range_adaptor_closure

[xiaoyang-sde]

Abstract

This pull request exports the std::ranges::range_adaptor_closure class template implemented in #89148.

// [range.adaptor.object], range adaptor objects
template<class D>
  requires is_class_v<D> && same_as<D, remove_cv_t<D>>
class range_adaptor_closure { };

Reference

• P2387R3: Pipe support for user-defined range adaptors
• C++ Draft Standard: [range.adaptor.object]
• [libc++][ranges] P2387R3: Pipe support for user-defined range adaptors #89148

[llvmbot]

@llvm/pr-subscribers-libcxx

Author: Xiaoyang Liu (xiaoyang-sde)

Changes

Abstract

This pull request exports the std::ranges::range_adaptor_closure class template implemented in #89148.

// [range.adaptor.object], range adaptor objects
template<class D>
  requires is_class_v<D> && same_as<D, remove_cv_t<D>>
class range_adaptor_closure { };

Reference

• P2387R3: Pipe support for user-defined range adaptors
• C++ Draft Standard: [range.adaptor.object]
• #89148

---

Full diff: https://github.com/llvm/llvm-project/pull/89793.diff

1 Files Affected:

• (modified) libcxx/modules/std/ranges.inc (+3-1)

diff --git a/libcxx/modules/std/ranges.inc b/libcxx/modules/std/ranges.inc
index 82c7d99f8979a8..7d215867a4317f 100644
--- a/libcxx/modules/std/ranges.inc
+++ b/libcxx/modules/std/ranges.inc
@@ -138,8 +138,10 @@ export namespace std {
     }
 #endif // _LIBCPP_HAS_NO_LOCALIZATION
 
+#if _LIBCPP_STD_VER >= 23
     // [range.adaptor.object], range adaptor objects
-    // using std::ranges::range_adaptor_closure;
+    using std::ranges::range_adaptor_closure;
+#endif
 
     // [range.all], all view
     namespace views {