From f170985e7aaec7562ca481bab49228ece233c4e4 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Sat, 16 May 2015 05:33:30 +0200
Subject: cmDefinitions: Make the ClosureKeys method static.

For consistency with all other closure-related methods.
---
 Source/cmDefinitions.cxx | 20 +++++++++++++-------
 Source/cmDefinitions.h   |  4 ++--
 Source/cmMakefile.cxx    | 12 ++----------
 3 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/Source/cmDefinitions.cxx b/Source/cmDefinitions.cxx
index 6fcc002..e2c6876 100644
--- a/Source/cmDefinitions.cxx
+++ b/Source/cmDefinitions.cxx
@@ -105,18 +105,24 @@ cmDefinitions cmDefinitions::MakeClosure(StackConstIter begin,
 
 //----------------------------------------------------------------------------
 std::vector<std::string>
-cmDefinitions::ClosureKeys(std::set<std::string>& bound) const
+cmDefinitions::ClosureKeys(StackConstIter begin, StackConstIter end)
 {
+  std::set<std::string> bound;
   std::vector<std::string> defined;
-  defined.reserve(this->Map.size());
-  for(MapType::const_iterator mi = this->Map.begin();
-      mi != this->Map.end(); ++mi)
+
+  for (StackConstIter it = begin; it != end; ++it)
     {
-    // Use this key if it is not already set or unset.
-    if(bound.insert(mi->first).second && mi->second.Exists)
+    defined.reserve(defined.size() + it->Map.size());
+    for(MapType::const_iterator mi = it->Map.begin();
+        mi != it->Map.end(); ++mi)
       {
-      defined.push_back(mi->first);
+      // Use this key if it is not already set or unset.
+      if(bound.insert(mi->first).second && mi->second.Exists)
+        {
+        defined.push_back(mi->first);
+        }
       }
     }
+
   return defined;
 }
diff --git a/Source/cmDefinitions.h b/Source/cmDefinitions.h
index b95ae6b..80643a9 100644
--- a/Source/cmDefinitions.h
+++ b/Source/cmDefinitions.h
@@ -44,8 +44,8 @@ public:
   /** Get the set of all local keys.  */
   std::vector<std::string> LocalKeys() const;
 
-  std::vector<std::string>
-  ClosureKeys(std::set<std::string>& bound) const;
+  static std::vector<std::string> ClosureKeys(StackConstIter begin,
+                                              StackConstIter end);
 
   static cmDefinitions MakeClosure(StackConstIter begin, StackConstIter end);
 
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 7b8d3af..9f9171c 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -94,16 +94,8 @@ public:
 
   std::vector<std::string> ClosureKeys() const
   {
-    std::vector<std::string> closureKeys;
-    std::set<std::string> bound;
-    for (std::list<cmDefinitions>::const_reverse_iterator it =
-         this->VarStack.rbegin(); it != this->VarStack.rend(); ++it)
-      {
-      std::vector<std::string> const& localKeys = it->ClosureKeys(bound);
-      closureKeys.insert(closureKeys.end(),
-                         localKeys.begin(), localKeys.end());
-      }
-    return closureKeys;
+    return cmDefinitions::ClosureKeys(this->VarStack.rbegin(),
+                                      this->VarStack.rend());
   }
 
   void PopDefinitions()
-- 
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