From 74a70fea97ddddb430346bd4b9b7e83a29616abc Mon Sep 17 00:00:00 2001
From: Pieter De Baets <pieterdb@fb.com>
Date: Fri, 19 May 2017 04:04:30 -0700
Subject: [PATCH] Add some helper methods to JStackTraceElement

Reviewed By: mhorowitz

Differential Revision: D5069764

fbshipit-source-id: e2073ab824c357b28e00838abc768d402905207d
---
 .../fb/include/fb/fbjni/CoreClasses.h         |  7 ++++++-
 .../jni/first-party/fb/jni/Exceptions.cpp     | 20 +++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
index 1ee5bb005..76eecb87b 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
@@ -557,10 +557,15 @@ class PinnedPrimitiveArray {
    friend class JPrimitiveArray<typename jtype_traits<T>::array_type>;
 };
 
-struct JStackTraceElement : JavaClass<JStackTraceElement> {
+struct FBEXPORT JStackTraceElement : JavaClass<JStackTraceElement> {
   static auto constexpr kJavaDescriptor = "Ljava/lang/StackTraceElement;";
 
   static local_ref<javaobject> create(const std::string& declaringClass, const std::string& methodName, const std::string& file, int line);
+
+  std::string getClassName() const;
+  std::string getMethodName() const;
+  std::string getFileName() const;
+  int getLineNumber() const;
 };
 
 /// Wrapper to provide functionality to jthrowable references
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
index f8273e222..3dca10b76 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
@@ -184,6 +184,26 @@ auto JStackTraceElement::create(
   return newInstance(declaringClass, methodName, file, line);
 }
 
+std::string JStackTraceElement::getClassName() const {
+  static auto meth = javaClassStatic()->getMethod<local_ref<JString>()>("getClassName");
+  return meth(self())->toStdString();
+}
+
+std::string JStackTraceElement::getMethodName() const {
+  static auto meth = javaClassStatic()->getMethod<local_ref<JString>()>("getMethodName");
+  return meth(self())->toStdString();
+}
+
+std::string JStackTraceElement::getFileName() const {
+  static auto meth = javaClassStatic()->getMethod<local_ref<JString>()>("getFileName");
+  return meth(self())->toStdString();
+}
+
+int JStackTraceElement::getLineNumber() const {
+  static auto meth = javaClassStatic()->getMethod<jint()>("getLineNumber");
+  return meth(self());
+}
+
 // Translate C++ to Java Exception
 
 namespace {