Add exception handling in vanilla jni

Summary:
Exception handling in vanilla jni

## Changelog:
[Internal] [Added] Added exception handling for vanilla jni implementation in yoga

Reviewed By: amir-shalem

Differential Revision: D18036134

fbshipit-source-id: 965eaa2fddbc00b9ac0120b79678608e280d03db

ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNIVanilla.cpp

@@ -352,6 +352,7 @@ static void jni_YGNodeCalculateLayoutJNI(
     jlongArray nativePointers,
     jobjectArray javaNodes) {
 
+  try {
     void* layoutContext = nullptr;
     auto map = PtrJNodeMapVanilla{};
     if (nativePointers) {
@@ -371,6 +372,9 @@ static void jni_YGNodeCalculateLayoutJNI(
         YGNodeStyleGetDirection(_jlong2YGNodeRef(nativePointer)),
         layoutContext);
     YGTransferLayoutOutputsRecursive(env, obj, root, layoutContext);
+  } catch (jthrowable throwable) {
+    env->Throw(throwable);
+  }
 }
 
 static void jni_YGNodeMarkDirtyJNI(

ReactAndroid/src/main/jni/first-party/yogajni/jni/corefunctions.cpp

@@ -62,12 +62,16 @@ void logErrorMessageAndDie(const char* message) {
 }
 
 void assertNoPendingJniException(JNIEnv* env) {
-  // This method cannot call any other method of the library, since other
-  // methods of the library use it to check for exceptions too
-  if (env->ExceptionCheck()) {
-    env->ExceptionDescribe();
-    logErrorMessageAndDie("Aborting due to pending Java exception in JNI");
+  if (env->ExceptionCheck() == JNI_FALSE) {
+    return;
   }
+
+  auto throwable = env->ExceptionOccurred();
+  if (!throwable) {
+    logErrorMessageAndDie("Unable to get pending JNI exception.");
+  }
+  env->ExceptionClear();
+  throw throwable;
 }
 
 } // namespace vanillajni