Ninja: Constify

Source/cmGlobalNinjaGenerator.cxx

@@ -830,7 +830,8 @@ static void EnsureTrailingSlash(std::string& path)
 #endif
 }
 
-std::string cmGlobalNinjaGenerator::ConvertToNinjaPath(const std::string& path)
+std::string cmGlobalNinjaGenerator::ConvertToNinjaPath(
+  const std::string& path) const
 {
   cmLocalNinjaGenerator* ng =
     static_cast<cmLocalNinjaGenerator*>(this->LocalGenerators[0]);
@@ -1421,7 +1422,8 @@ void cmGlobalNinjaGenerator::InitOutputPathPrefix()
   EnsureTrailingSlash(this->OutputPathPrefix);
 }
 
-std::string cmGlobalNinjaGenerator::NinjaOutputPath(std::string const& path)
+std::string cmGlobalNinjaGenerator::NinjaOutputPath(
+  std::string const& path) const
 {
   if (!this->HasOutputPathPrefix() || cmSystemTools::FileIsFullPath(path)) {
     return path;

Source/cmGlobalNinjaGenerator.h

@@ -233,7 +233,7 @@ public:
     return this->RulesFileStream;
   }
 
-  std::string ConvertToNinjaPath(const std::string& path);
+  std::string ConvertToNinjaPath(const std::string& path) const;
   std::string ConvertToNinjaFolderRule(const std::string& path);
 
   struct MapToNinjaPathImpl
@@ -333,7 +333,7 @@ public:
   bool SupportsConsolePool() const;
   bool SupportsImplicitOuts() const;
 
-  std::string NinjaOutputPath(std::string const& path);
+  std::string NinjaOutputPath(std::string const& path) const;
   bool HasOutputPathPrefix() const { return !this->OutputPathPrefix.empty(); }
   void StripNinjaOutputPathPrefixAsSuffix(std::string& path);