From 65be7de7aca4bdac05e0acf68ec86a351e779839 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 18 Mar 2020 07:19:41 +0200
Subject: Add $visibility(<variable>) function for querying variable visibility

---
 libbuild2/variable.cxx | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'libbuild2/variable.cxx')

diff --git a/libbuild2/variable.cxx b/libbuild2/variable.cxx
index 0460344..7b55357 100644
--- a/libbuild2/variable.cxx
+++ b/libbuild2/variable.cxx
@@ -15,21 +15,21 @@ namespace build2
 {
   // variable_visibility
   //
-  ostream&
-  operator<< (ostream& o, variable_visibility v)
+  string
+  to_string (variable_visibility v)
   {
-    const char* s (nullptr);
+    string r;
 
     switch (v)
     {
-    case variable_visibility::normal:  s = "normal";       break;
-    case variable_visibility::project: s = "project";      break;
-    case variable_visibility::scope:   s = "scope";        break;
-    case variable_visibility::target:  s = "target";       break;
-    case variable_visibility::prereq:  s = "prerequisite"; break;
+    case variable_visibility::normal:  r = "normal";       break;
+    case variable_visibility::project: r = "project";      break;
+    case variable_visibility::scope:   r = "scope";        break;
+    case variable_visibility::target:  r = "target";       break;
+    case variable_visibility::prereq:  r = "prerequisite"; break;
     }
 
-    return o << s;
+    return r;
   }
 
   // value
-- 
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