From 7b8a990424228716cc3161027dcf2c18ef9793b6 Mon Sep 17 00:00:00 2001
From: Ben Boeckel <mathstuf@gmail.com>
Date: Tue, 11 Mar 2014 00:22:02 -0400
Subject: [PATCH] perf: Cache the language property string

---
 Source/cmSourceFile.cxx | 6 ++++--
 Source/cmSourceFile.h   | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Source/cmSourceFile.cxx b/Source/cmSourceFile.cxx
index 3b130ec61..b833d3fd4 100644
--- a/Source/cmSourceFile.cxx
+++ b/Source/cmSourceFile.cxx
@@ -40,6 +40,8 @@ std::string const& cmSourceFile::GetExtension() const
   return this->Extension;
 }
 
+const std::string cmSourceFile::propLANGUAGE = "LANGUAGE";
+
 //----------------------------------------------------------------------------
 void cmSourceFile::SetObjectLibrary(std::string const& objlib)
 {
@@ -56,7 +58,7 @@ std::string cmSourceFile::GetObjectLibrary() const
 std::string cmSourceFile::GetLanguage()
 {
   // If the language was set explicitly by the user then use it.
-  if(const char* lang = this->GetProperty("LANGUAGE"))
+  if(const char* lang = this->GetProperty(propLANGUAGE))
     {
     return lang;
     }
@@ -93,7 +95,7 @@ std::string cmSourceFile::GetLanguage()
 std::string cmSourceFile::GetLanguage() const
 {
   // If the language was set explicitly by the user then use it.
-  if(const char* lang = this->GetProperty("LANGUAGE"))
+  if(const char* lang = this->GetProperty(propLANGUAGE))
     {
     return lang;
     }
diff --git a/Source/cmSourceFile.h b/Source/cmSourceFile.h
index 42d6f8af2..bdcdbfd4c 100644
--- a/Source/cmSourceFile.h
+++ b/Source/cmSourceFile.h
@@ -117,6 +117,8 @@ private:
   void CheckLanguage(std::string const& ext);
 
   std::vector<std::string> Depends;
+
+  static const std::string propLANGUAGE;
 };
 
 // TODO: Factor out into platform information modules.