react-native code-gen > Add a C++ only TurboModule example (for Android/iOS/macOS/Windows) (#35138)

Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/35138 Changelog: [General][Added] - Add a C++ only TurboModule example (for Android/iOS/macOS/Windows) react-native@0.69 introduced a new bridging layer to ease integration for pure C++ TurboModules using C++ std:: types directly instead of the lower level jsi:: types: https://github.com/facebook/react-native/tree/v0.69.0/ReactCommon/react/bridging This bridging layer can be used in JSI functions or more conveniently in C++ TurboModules. Here is a example of an C++ only TurboModule which will work on Android and iOS and macOS/Windows (using microsoft/react-native-macos|windows) only using flow/TypeScript and standard C++ types. C++ only TurboModules are very handy as they do not require to work with JSI APIs - instead std:: or custom C++ can by used. Reviewed By: javache Differential Revision: D39011736 fbshipit-source-id: 84c833d8540671fde8505f1aeb0265074b248730
2025-11-01 09:14:26 +00:00 · 2022-11-09 10:48:49 -08:00
parent d587e0c2a5
commit c63ea4c3a0
17 changed files with 745 additions and 1 deletions
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <react/bridging/Bridging.h>
+#include <optional>
+#include <string>
+
+namespace facebook::react {
+
+struct ObjectStruct {
+  int32_t a;
+  std::string b;
+  std::optional<std::string> c;
+  bool operator==(const ObjectStruct &other) const {
+    return a == other.a && b == other.b && c == other.c;
+  }
+};
+
+template <>
+struct Bridging<ObjectStruct> {
+  static ObjectStruct fromJs(
+      jsi::Runtime &rt,
+      const jsi::Object &value,
+      const std::shared_ptr<CallInvoker> &jsInvoker) {
+    ObjectStruct result{
+        bridging::fromJs<int32_t>(rt, value.getProperty(rt, "a"), jsInvoker),
+        bridging::fromJs<std::string>(
+            rt, value.getProperty(rt, "b"), jsInvoker),
+        bridging::fromJs<std::optional<std::string>>(
+            rt, value.getProperty(rt, "c"), jsInvoker)};
+
+    return result;
+  }
+
+  static jsi::Object toJs(jsi::Runtime &rt, const ObjectStruct &value) {
+    auto result = facebook::jsi::Object(rt);
+    result.setProperty(rt, "a", bridging::toJs(rt, value.a));
+    result.setProperty(rt, "b", bridging::toJs(rt, value.b));
+    if (value.c) {
+      result.setProperty(rt, "c", bridging::toJs(rt, value.c.value()));
+    }
+    return result;
+  }
+};
+
+} // namespace facebook::react