Add a macro to allow default move copy constructor and assignment operator above VS2013.

webcc/globals.h

@@ -6,6 +6,18 @@
 // -----------------------------------------------------------------------------
 // Macros
 
+// Does the compiler support "= default" for move copy constructor and
+// assignment operator?
+#ifdef _MSC_VER
+  #if _MSC_VER <= 1800  // VS 2013
+    #define WEBCC_DEFAULT_MOVE_COPY_ASSIGN 0
+  #else
+    #define WEBCC_DEFAULT_MOVE_COPY_ASSIGN 1
+  #endif  // _MSC_VER <= 1800
+#else
+  #define WEBCC_DEFAULT_MOVE_COPY_ASSIGN 1
+#endif  // _MSC_VER
+
 // Explicitly declare the copy constructor and assignment operator as deleted.
 #define DELETE_COPY_AND_ASSIGN(TypeName) \
   TypeName(const TypeName&) = delete; \

webcc/soap_parameter.h

@@ -3,6 +3,8 @@
 
 #include <string>
 
+#include "webcc/globals.h"  // for COPY_ASSIGN_MOVE_DEFAULT
+
 namespace webcc {
 
 // Key-value SOAP parameter.
@@ -44,6 +46,13 @@ class SoapParameter {
         as_cdata_(false) {
   }
 
+#if WEBCC_DEFAULT_MOVE_COPY_ASSIGN
+
+  SoapParameter(SoapParameter&&) = default;
+  SoapParameter& operator=(SoapParameter&&) = default;
+
+#else
+
   // Use "= default" if drop the support of VS 2013.
   SoapParameter(SoapParameter&& rhs)
       : key_(std::move(rhs.key_)), value_(std::move(rhs.value_)),
@@ -60,6 +69,8 @@ class SoapParameter {
     return *this;
   }
 
+#endif  // WEBCC_DEFAULT_MOVE_COPY_ASSIGN
+
   const std::string& key() const { return key_; }
   const std::string& value() const { return value_; }