Simplify macro usage in MethodInvoker

Reviewed By: kathryngray

Differential Revision: D5363934

fbshipit-source-id: a9cffb10b4d6244d1d66267f6c1e07ba69663b9c

Author: javache

ReactAndroid/src/main/jni/react/jni/MethodInvoker.cpp

@@ -185,20 +185,18 @@ MethodCallResult MethodInvoker::invoke(std::weak_ptr<Instance>& instance, alias_
       return extract(instance, type, it, end);
   });
 
-#define CASE_PRIMITIVE(KEY, TYPE, METHOD)                                      \
-  case KEY: {                                                                  \
-    auto result = env->Call ## METHOD ## MethodA(module.get(), method_, args); \
-    throwPendingJniExceptionAsCppException();                                  \
-    return folly::dynamic(result);                                             \
-  }
+#define PRIMITIVE_CASE(METHOD) {                                             \
+  auto result = env->Call ## METHOD ## MethodA(module.get(), method_, args); \
+  throwPendingJniExceptionAsCppException();                                  \
+  return folly::dynamic(result);                                             \
+}
 
-#define CASE_OBJECT(KEY, JNI_CLASS, ACTIONS)                                \
-  case KEY: {                                                               \
-    auto jobject = env->CallObjectMethodA(module.get(), method_, args);     \
-    throwPendingJniExceptionAsCppException();                               \
-    auto result = adopt_local(static_cast<JNI_CLASS::javaobject>(jobject)); \
-    return folly::dynamic(result->ACTIONS);                                 \
-  }
+#define OBJECT_CASE(JNI_CLASS, ACTIONS) {                                 \
+  auto jobject = env->CallObjectMethodA(module.get(), method_, args);     \
+  throwPendingJniExceptionAsCppException();                               \
+  auto result = adopt_local(static_cast<JNI_CLASS::javaobject>(jobject)); \
+  return folly::dynamic(result->ACTIONS());                               \
+}
 
   char returnType = signature_.at(0);
   switch (returnType) {
@@ -207,18 +205,29 @@ MethodCallResult MethodInvoker::invoke(std::weak_ptr<Instance>& instance, alias_
       throwPendingJniExceptionAsCppException();
       return folly::none;
 
-    CASE_PRIMITIVE('z', jboolean, Boolean)
-    CASE_OBJECT('Z', JBoolean, value())
-    CASE_PRIMITIVE('i', jint, Int)
-    CASE_OBJECT('I', JInteger, value())
-    CASE_PRIMITIVE('d', jdouble, Double)
-    CASE_OBJECT('D', JDouble, value())
-    CASE_PRIMITIVE('f', jfloat, Float)
-    CASE_OBJECT('F', JFloat, value())
-
-    CASE_OBJECT('S', JString, toStdString())
-    CASE_OBJECT('M', WritableNativeMap, cthis()->consume())
-    CASE_OBJECT('A', WritableNativeArray, cthis()->consume())
+    case 'z':
+      PRIMITIVE_CASE(Boolean)
+    case 'Z':
+      OBJECT_CASE(JBoolean, value)
+    case 'i':
+      PRIMITIVE_CASE(Int)
+    case 'I':
+      OBJECT_CASE(JInteger, value)
+    case 'd':
+      PRIMITIVE_CASE(Double)
+    case 'D':
+      OBJECT_CASE(JDouble, value)
+    case 'f':
+      PRIMITIVE_CASE(Float)
+    case 'F':
+      OBJECT_CASE(JFloat, value)
+
+    case 'S':
+      OBJECT_CASE(JString, toStdString)
+    case 'M':
+      OBJECT_CASE(WritableNativeMap, cthis()->consume)
+    case 'A':
+      OBJECT_CASE(WritableNativeArray, cthis()->consume)
 
     default:
       LOG(FATAL) << "Unknown return type: " << returnType;