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#pragma once
#include <mapbox/compatibility/value.hpp>
#include <memory>
namespace mbgl {
namespace platform {
#define DECLARE_MAPBOX_SETTING(name, value) constexpr const char* name = "mapbox_" #value
// The value for EXPERIMENTAL_THREAD_PRIORITY_* keys, must be a double.
DECLARE_MAPBOX_SETTING(EXPERIMENTAL_THREAD_PRIORITY_WORKER, thread_priority_worker);
DECLARE_MAPBOX_SETTING(EXPERIMENTAL_THREAD_PRIORITY_FILE, thread_priority_file);
DECLARE_MAPBOX_SETTING(EXPERIMENTAL_THREAD_PRIORITY_NETWORK, thread_priority_network);
DECLARE_MAPBOX_SETTING(EXPERIMENTAL_THREAD_PRIORITY_DATABASE, thread_priority_database);
// Settings class provides non-persistent, in-process key-value storage.
class Settings final {
public:
// Returns singleton instance
static Settings& getInstance() noexcept;
// Sets setting value for a specified key.
void set(const std::string& key, mapbox::base::Value value) noexcept;
// Sets multiple setting values by merging current Settings object
// with provided `values` object.
void set(const mapbox::base::ValueObject& values) noexcept;
// Returns setting value for a specified key or NullValue if element
// for specified key is missing.
mapbox::base::Value get(const std::string& key) const noexcept;
// Returns values for settings whose keys are equal to the ones provided in `keys` argument.
// Null values would be provided for keys whose elements are missing in Settings.
mapbox::base::ValueObject get(const std::vector<std::string>& keys) const noexcept;
private:
Settings();
private:
class Impl;
std::unique_ptr<Impl> impl;
};
} // namespace platform
} // namespace mbgl
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