From 0cd588c249a5560bc78dce796c0d1b73dcd2e0b3 Mon Sep 17 00:00:00 2001
From: Benoit Blanchon <git@benoitblanchon.fr>
Date: Mon, 14 Mar 2022 19:44:57 +0100
Subject: [PATCH] MemberProxy.link()

---
 extras/tests/JsonDocument/MemberProxy.cpp | 8 ++++++++
 src/ArduinoJson/Object/MemberProxy.hpp    | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/extras/tests/JsonDocument/MemberProxy.cpp b/extras/tests/JsonDocument/MemberProxy.cpp
index 514fd000..47434950 100644
--- a/extras/tests/JsonDocument/MemberProxy.cpp
+++ b/extras/tests/JsonDocument/MemberProxy.cpp
@@ -277,3 +277,11 @@ TEST_CASE("MemberProxy::createNestedObject(key)") {
 
   CHECK(doc["status"]["weather"]["temp"] == 42);
 }
+
+TEST_CASE("MemberProxy::link()") {
+  StaticJsonDocument<1024> doc1, doc2;
+  doc1["obj"].link(doc2);
+  doc2["hello"] = "world";
+
+  CHECK(doc1.as<std::string>() == "{\"obj\":{\"hello\":\"world\"}}");
+}
diff --git a/src/ArduinoJson/Object/MemberProxy.hpp b/src/ArduinoJson/Object/MemberProxy.hpp
index e8fff4de..86380d8c 100644
--- a/src/ArduinoJson/Object/MemberProxy.hpp
+++ b/src/ArduinoJson/Object/MemberProxy.hpp
@@ -113,6 +113,10 @@ class MemberProxy : public VariantOperators<MemberProxy<TObject, TStringRef> >,
     getUpstreamMember().remove(key);
   }
 
+  FORCE_INLINE void link(VariantConstRef value) {
+    getOrAddUpstreamMember().link(value);
+  }
+
   template <typename TValue>
   FORCE_INLINE typename VariantTo<TValue>::type to() {
     return getOrAddUpstreamMember().template to<TValue>();