Make ReactModuleSpecProcessor print stacktrace when typeElement.getAn…

…notation fails

Summary:
WHen porting TurboModules or adding new TurboModules, ReactModuleSpecProcessor may fail during buck build, and when the failure is caused by typeElement.getAnnotation, no useful information gets collected, making it difficult to debug.
So here I am adding a try & catch so we can get useful debugging info.

Changelog: [Internal]

Reviewed By: RSNara

Differential Revision: D35767207

fbshipit-source-id: 7e1f9dfbfd31339ab37af19c51d85085e100955a

ReactAndroid/src/main/java/com/facebook/react/module/processing/BUCK

@@ -22,6 +22,8 @@ rn_java_library(
  source = "8",
  target = "8",
  deps = [
+ react_native_dep("libraries/fbcore/src/main/java/com/facebook/common/logging:logging"),
+ react_native_target("java/com/facebook/react/common:common"),
  react_native_dep("third-party/java/infer-annotations:infer-annotations"),
  react_native_dep("third-party/java/javapoet:javapoet"),
  react_native_dep("third-party/java/jsr-305:jsr-305"),

ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java

@@ -10,7 +10,9 @@
 import static javax.lang.model.element.Modifier.PUBLIC;
 import static javax.tools.Diagnostic.Kind.ERROR;
 
+import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.SuppressFieldNotInitialized;
+import com.facebook.react.common.ReactConstants;
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.module.annotations.ReactModuleList;
 import com.facebook.react.module.model.ReactModuleInfo;
@@ -87,7 +89,15 @@ public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment
  }
 
  TypeElement typeElement = (TypeElement) reactModuleListElement;
- ReactModuleList reactModuleList = typeElement.getAnnotation(ReactModuleList.class);
+
+ ReactModuleList reactModuleList = null;
+ try {
+ reactModuleList = typeElement.getAnnotation(ReactModuleList.class);
+ } catch (Exception ex) {
+ FLog.i(
+ ReactConstants.TAG, "Could not reactModuleList from typeElement.getAnnotation()", ex);
+ throw ex;
+ }
 
  if (reactModuleList == null) {
  continue;