Use rvalue ref return to avoid copy

10 years ago · f77ab15c57
parent c7eed74dc4
commit f77ab15c57
1 changed files with 2 additions and 2 deletions
--- a/src/compiler/objective_c_generator.cc
+++ b/src/compiler/objective_c_generator.cc
@ -100,14 +100,14 @@ void PrintAdvancedSignature(Printer *printer,
  PrintMethodSignature(printer, method, vars);
 }

-inline map<string, string> GetMethodVars(const MethodDescriptor *method) {
+inline map<string, string>&& GetMethodVars(const MethodDescriptor *method) {
  map<string,string> res;
  res["method_name"] = method->name();
  res["request_type"] = method->input_type()->name();
  res["response_type"] = method->output_type()->name();
  res["request_class"] = ClassName(method->input_type());
  res["response_class"] = ClassName(method->output_type());
-  return res;
+  return std::forward<map<string,string>>(res);
 }

 void PrintMethodDeclarations(Printer *printer,