Added iOS support for loading multiple RAM bundles

Differential Revision: D5850970

fbshipit-source-id: 88ab6fe3822f1bc4195007f8ec83177a84c27569

ReactCommon/cxxreact/JSIndexedRAMBundleRegistry.h

@@ -0,0 +1,26 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#pragma once
+
+#include <cxxreact/RAMBundleRegistry.h>
+
+namespace facebook {
+namespace react {
+
+class JSIndexedRAMBundleRegistry: public RAMBundleRegistry {
+public:
+  JSIndexedRAMBundleRegistry(
+    std::unique_ptr<JSModulesUnbundle> mainBundle,
+    std::string baseDirectoryPath):
+  RAMBundleRegistry(std::move(mainBundle)), m_baseDirectoryPath(baseDirectoryPath) {}
+
+protected:
+  virtual std::unique_ptr<JSModulesUnbundle> bundleById(uint32_t index) const override;
+private:
+  std::string bundlePathById(uint32_t index) const;
+
+  std::string m_baseDirectoryPath;
+};
+
+}  // namespace react
+}  // namespace facebook