[libcxx-commits] [PATCH] D132812: [NFC][libc++][format] Use ranges in the output.

Mark de Wever via Phabricator via libcxx-commits libcxx-commits at lists.llvm.org
Mon Aug 29 08:55:32 PDT 2022


Mordante created this revision.
Herald added a project: All.
Mordante published this revision for review.
Herald added a project: libc++.
Herald added a subscriber: libcxx-commits.
Herald added a reviewer: libc++.

This should avoid some copies of the output iterator.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132812

Files:
  libcxx/include/__format/formatter_output.h


Index: libcxx/include/__format/formatter_output.h
===================================================================
--- libcxx/include/__format/formatter_output.h
+++ libcxx/include/__format/formatter_output.h
@@ -10,10 +10,9 @@
 #ifndef _LIBCPP___FORMAT_FORMATTER_OUTPUT_H
 #define _LIBCPP___FORMAT_FORMATTER_OUTPUT_H
 
-#include <__algorithm/copy.h>
-#include <__algorithm/copy_n.h>
-#include <__algorithm/fill_n.h>
-#include <__algorithm/transform.h>
+#include <__algorithm/ranges_copy.h>
+#include <__algorithm/ranges_fill_n.h>
+#include <__algorithm/ranges_transform.h>
 #include <__concepts/same_as.h>
 #include <__config>
 #include <__format/buffer.h>
@@ -99,7 +98,7 @@
     __out_it.__get_container()->__copy(__str);
     return __out_it;
   } else {
-    return std::copy_n(__str.data(), __str.size(), _VSTD::move(__out_it));
+    return std::ranges::copy(__str, _VSTD::move(__out_it)).out;
   }
 }
 
@@ -129,7 +128,7 @@
     __out_it.__get_container()->__transform(__first, __last, _VSTD::move(__operation));
     return __out_it;
   } else {
-    return std::transform(__first, __last, _VSTD::move(__out_it), __operation);
+    return std::ranges::transform(__first, __last, _VSTD::move(__out_it), __operation).out;
   }
 }
 
@@ -142,7 +141,7 @@
     __out_it.__get_container()->__fill(__n, __value);
     return __out_it;
   } else {
-    return std::fill_n(_VSTD::move(__out_it), __n, __value);
+    return std::ranges::fill_n(_VSTD::move(__out_it), __n, __value);
   }
 }
 


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