Now passes '-xc++' to libclang for all C++ files

src/source_clang.cc

@@ -235,10 +235,11 @@ std::vector<std::string> Source::ClangViewParse::get_compilation_commands() {
 #endif
   }
   arguments.emplace_back("-fretain-comments-from-system-headers");
-  auto file_path_extension=file_path.extension();
-  if(file_path_extension==".h" || //TODO: temporary fix for .h-files (parse as c++)
-     file_path_extension==".tcc")
+  
+  if(file_path.extension()==".h" ||  //TODO: temporary fix for .h-files (parse as c++)
+     (language && (language->get_id()=="cpp" || language->get_id()=="cpphdr")))
     arguments.emplace_back("-xc++");
+  
   if(language && (language->get_id()=="chdr" || language->get_id()=="cpphdr"))
     arguments.emplace_back("-Wno-pragma-once-outside-header");