react-native/ReactCommon/config/ReactNativeConfig.h

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#pragma once

#include <string>

namespace facebook {
namespace react {

/**
 * ReactNative configuration as provided by the hosting app.
 * Provide a sub-class implementation to allow app specific customization.
 */
class ReactNativeConfig {
public:
  ReactNativeConfig();
  virtual ~ReactNativeConfig();

  virtual bool getBool(const std::string &param) const = 0;
  virtual std::string getString(const std::string &param) const = 0;
  virtual int64_t getInt64(const std::string &param) const = 0;
  virtual double getDouble(const std::string &param) const = 0;
};

/**
 * Empty configuration that will always provide "falsy" values.
 */
class EmptyReactNativeConfig : public ReactNativeConfig {
public:
  EmptyReactNativeConfig();

  bool getBool(const std::string &param) const override;
  std::string getString(const std::string &param) const override;
  int64_t getInt64(const std::string &param) const override;
  double getDouble(const std::string &param) const override;
};

} // namespace react
} // namespace facebook