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#include <mbgl/style/expression/expression.hpp>
#include <mbgl/style/expression/compound_expression.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/util/feature.hpp>
namespace mbgl {
namespace style {
namespace expression {
class GeoJSONFeature : public GeometryTileFeature {
public:
const Feature& feature;
GeoJSONFeature(const Feature& feature_) : feature(feature_) {}
FeatureType getType() const override {
return apply_visitor(ToFeatureType(), feature.geometry);
}
const PropertyMap& getProperties() const override { return feature.properties; }
FeatureIdentifier getID() const override { return feature.id; }
GeometryCollection getGeometries() const override { return {}; }
mbgl::Value getValue(const std::string& key) const override {
return feature.properties.count(key) ? feature.properties.at(key) : NullValue();
}
};
EvaluationResult Expression::evaluate(optional<float> zoom, const Feature& feature, optional<double> colorRampParameter) const {
GeoJSONFeature f(feature);
return this->evaluate(EvaluationContext(zoom, &f, colorRampParameter));
}
} // namespace expression
} // namespace style
} // namespace mbgl
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