rn | cxx | Move the definitions of TurboModule virtual methods to declaration, to allow for use in context with RTTI.

Summary:
Not having this disallows including turbo module and extending in places where RTTI is enabled.
There is no additional includes or implementation changes - it merely allows for things to nicely link with other libraries.

Changelog: [General][Fixed] - Allow including TurboModule.h in mixed rtti/no-rtti environment, even if TurboModule.h/cpp is compiled without RTTI.

Reviewed By: appden

Differential Revision: D34637168

fbshipit-source-id: 2e5d9e546bdc5652f06436fec3b12f1aa9daab05

Author: nlutsenko

ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/jni/Android.mk

@@ -50,7 +50,7 @@ LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)
 
 LOCAL_CFLAGS += -fexceptions -frtti -std=c++17 -Wall
 
-LOCAL_SHARED_LIBRARIES = libfb libfbjni libreact_nativemodule_core
+LOCAL_SHARED_LIBRARIES = libfb libfbjni libreact_nativemodule_core libjsi
 
 LOCAL_STATIC_LIBRARIES = libcallinvokerholder libreactperfloggerjni
 

ReactCommon/react/nativemodule/core/ReactCommon/TurboModule.cpp

@@ -17,28 +17,5 @@ TurboModule::TurboModule(
     std::shared_ptr<CallInvoker> jsInvoker)
     : name_(name), jsInvoker_(jsInvoker) {}
 
-TurboModule::~TurboModule() {}
-
-jsi::Value TurboModule::get(
-    jsi::Runtime &runtime,
-    const jsi::PropNameID &propName) {
-  std::string propNameUtf8 = propName.utf8(runtime);
-  auto p = methodMap_.find(propNameUtf8);
-  if (p == methodMap_.end()) {
-    // Method was not found, let JS decide what to do.
-    return jsi::Value::undefined();
-  }
-  MethodMetadata meta = p->second;
-  return jsi::Function::createFromHostFunction(
-      runtime,
-      propName,
-      static_cast<unsigned int>(meta.argCount),
-      [this, meta](
-          facebook::jsi::Runtime &rt,
-          const facebook::jsi::Value &thisVal,
-          const facebook::jsi::Value *args,
-          size_t count) { return meta.invoker(rt, *this, args, count); });
-}
-
 } // namespace react
 } // namespace facebook

ReactCommon/react/nativemodule/core/ReactCommon/TurboModule.h

@@ -38,11 +38,27 @@ enum TurboModuleMethodValueKind {
 class JSI_EXPORT TurboModule : public facebook::jsi::HostObject {
  public:
   TurboModule(const std::string &name, std::shared_ptr<CallInvoker> jsInvoker);
-  virtual ~TurboModule();
 
   virtual facebook::jsi::Value get(
       facebook::jsi::Runtime &runtime,
-      const facebook::jsi::PropNameID &propName) override;
+      const facebook::jsi::PropNameID &propName) override {
+    std::string propNameUtf8 = propName.utf8(runtime);
+    auto p = methodMap_.find(propNameUtf8);
+    if (p == methodMap_.end()) {
+      // Method was not found, let JS decide what to do.
+      return jsi::Value::undefined();
+    }
+    MethodMetadata meta = p->second;
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        propName,
+        static_cast<unsigned int>(meta.argCount),
+        [this, meta](
+            facebook::jsi::Runtime &rt,
+            const facebook::jsi::Value &thisVal,
+            const facebook::jsi::Value *args,
+            size_t count) { return meta.invoker(rt, *this, args, count); });
+  }
 
   const std::string name_;
   std::shared_ptr<CallInvoker> jsInvoker_;