Added move-constructor and move-assignment to BasicJsonDocument

src/ArduinoJson/Configuration.hpp

@@ -13,9 +13,11 @@
 #if __cplusplus >= 201103L
 #define ARDUINOJSON_HAS_LONG_LONG 1
 #define ARDUINOJSON_HAS_NULLPTR 1
+#define ARDUINOJSON_HAS_RVALUE_REFERENCES 1
 #else
 #define ARDUINOJSON_HAS_LONG_LONG 0
 #define ARDUINOJSON_HAS_NULLPTR 0
+#define ARDUINOJSON_HAS_RVALUE_REFERENCES 0
 #endif
 
 // Small or big machine?

src/ArduinoJson/Document/BasicJsonDocument.hpp

@@ -52,6 +52,14 @@ class BasicJsonDocument : AllocatorOwner<TAllocator>, public JsonDocument {
     set(src);
   }
 
+#if ARDUINOJSON_HAS_RVALUE_REFERENCES
+  BasicJsonDocument(BasicJsonDocument&& src)
+      : AllocatorOwner<TAllocator>(src), JsonDocument(src) {
+    src._data.setNull();
+    src._pool = MemoryPool(0, 0);
+  }
+#endif
+
   // disambiguate
   BasicJsonDocument(VariantRef src)
       : JsonDocument(allocPool(src.memoryUsage())) {
@@ -68,6 +76,17 @@ class BasicJsonDocument : AllocatorOwner<TAllocator>, public JsonDocument {
     return *this;
   }
 
+#if ARDUINOJSON_HAS_RVALUE_REFERENCES
+  BasicJsonDocument& operator=(BasicJsonDocument&& src) {
+    freePool();
+    _data = src._data;
+    _pool = src._pool;
+    src._data.setNull();
+    src._pool = MemoryPool(0, 0);
+    return *this;
+  }
+#endif
+
   template <typename T>
   BasicJsonDocument& operator=(const T& src) {
     reallocPoolIfTooSmall(src.memoryUsage());

src/ArduinoJson/Polyfills/utility.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include <ArduinoJson/Namespace.hpp>
+#include "type_traits.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 template <typename T>
@@ -13,4 +13,16 @@ inline void swap(T& a, T& b) {
   a = b;
   b = t;
 }
+
+#if ARDUINOJSON_HAS_RVALUE_REFERENCES
+template <typename T>
+typename remove_reference<T>::type&& move(T&& t) {
+  return static_cast<typename remove_reference<T>::type&&>(t);
+}
+#else
+template <typename T>
+T& move(T& t) {
+  return t;
+}
+#endif
 }  // namespace ARDUINOJSON_NAMESPACE