react-native/ReactCommon/cxxreact/ModuleRegistry.h

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// Copyright 2004-present Facebook. All Rights Reserved.
#pragma once
#include <memory>
#include <unordered_set>
#include <vector>
#include <cxxreact/JSExecutor.h>
#include <folly/Optional.h>
#include <folly/dynamic.h>
#ifndef RN_EXPORT
#define RN_EXPORT __attribute__((visibility("default")))
#endif
namespace facebook {
namespace react {
class NativeModule;
struct ModuleConfig {
size_t index;
folly::dynamic config;
};
class RN_EXPORT ModuleRegistry {
public:
// not implemented:
// onBatchComplete: see https://our.intern.facebook.com/intern/tasks/?t=5279396
// getModule: only used by views
// getAllModules: only used for cleanup; use RAII instead
// notifyCatalystInstanceInitialized: this is really only used by view-related code
// notifyCatalystInstanceDestroy: use RAII instead
ModuleRegistry(std::vector<std::unique_ptr<NativeModule>> modules);
void registerModules(std::vector<std::unique_ptr<NativeModule>> modules);
std::vector<std::string> moduleNames();
folly::Optional<ModuleConfig> getConfig(const std::string& name);
void callNativeMethod(unsigned int moduleId, unsigned int methodId, folly::dynamic&& params, int callId);
MethodCallResult callSerializableNativeHook(unsigned int moduleId, unsigned int methodId, folly::dynamic&& args);
private:
// This is always populated
std::vector<std::unique_ptr<NativeModule>> modules_;
// This is used to extend the population of modulesByName_ if registerModules is called after moduleNames
void updateModuleNamesFromIndex(size_t size);
// This is only populated if moduleNames() is called. Values are indices into modules_.
std::unordered_map<std::string, size_t> modulesByName_;
// This is populated with modules that are requested via getConfig but are unknown.
// An error will be thrown if they are subsquently added to the registry.
std::unordered_set<std::string> unknownModules_;
};
}
}