From dfb51bc816cde2cb345f8a0300205e6ac95a2065 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 30 Mar 2020 15:30:08 +0200
Subject: Switch to project variable visibility by default

---
 libbuild2/scope.hxx | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'libbuild2/scope.hxx')

diff --git a/libbuild2/scope.hxx b/libbuild2/scope.hxx
index cb20f79..39be143 100644
--- a/libbuild2/scope.hxx
+++ b/libbuild2/scope.hxx
@@ -187,13 +187,15 @@ namespace build2
     value&
     assign (const variable* var) {return vars.assign (var);} // For cached.
 
+    // Assign an untyped non-overridable variable with project visibility.
+    //
     value&
     assign (string name)
     {
       return assign (var_pool ().insert (move (name)));
     }
 
-    // Assign a typed non-overridable variable with normal visibility.
+    // As above, but assign a typed variable.
     //
     template <typename T>
     value&
@@ -210,6 +212,22 @@ namespace build2
       return v.as<T> ();
     }
 
+    template <typename T>
+    T&
+    assign (const variable& var, T&& val)
+    {
+      value& v (assign (var) = forward<T> (val));
+      return v.as<T> ();
+    }
+
+    template <typename T>
+    T&
+    assign (const variable* var, T&& val)
+    {
+      value& v (assign (var) = forward<T> (val));
+      return v.as<T> ();
+    }
+
     // Return a value suitable for appending. If the variable does not
     // exist in this scope's map, then outer scopes are searched for
     // the same variable. If found then a new variable with the found
-- 
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