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#include <mbgl/style/source_impl.hpp>
#include <mbgl/style/layer_impl.hpp>
#include <mbgl/util/immutable.hpp>
#include <mbgl/util/variant.hpp>
#include <unordered_map>
namespace mbgl {
template <class T>
class StyleDifference {
public:
std::unordered_map<std::string, T> added;
std::unordered_map<std::string, T> removed;
std::unordered_map<std::string, T> changed;
};
using ImmutableSource = Immutable<style::Source::Impl>;
using SourceDifference = StyleDifference<ImmutableSource>;
SourceDifference diffSources(const std::vector<ImmutableSource>&,
const std::vector<ImmutableSource>&);
using ImmutableLayer = Immutable<style::Layer::Impl>;
using LayerDifference = StyleDifference<ImmutableLayer>;
LayerDifference diffLayers(const std::vector<ImmutableLayer>&,
const std::vector<ImmutableLayer>&);
} // namespace mbgl
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