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#pragma once
#include <mbgl/util/noncopyable.hpp>
#include <mbgl/style/types.hpp>
#include <memory>
#include <string>
namespace mbgl {
namespace style {
/**
* The runtime representation of a [source](https://www.mapbox.com/mapbox-gl-style-spec/#sources) from the Mapbox Style
* Specification.
*
* `Source` is an abstract base class; concrete derived classes are provided for each source type. `Source` contains
* functionality that is common to all layer types:
*
* * Runtime type information: type predicates and casting
* * Accessors for properties common to all source types: ID, etc.
* * Cloning and copying
*
* All other functionality lives in the derived classes. To instantiate a source, create an instance of the desired
* type, passing the ID:
*
* auto vectorSource = std::make_unique<VectorSource>("my-vector-source");
*/
class Source : public mbgl::util::noncopyable {
public:
virtual ~Source();
// Check whether this source is of the given subtype.
template <class T>
bool is() const;
// Dynamically cast this source to the given subtype.
template <class T>
T* as() {
return is<T>() ? reinterpret_cast<T*>(this) : nullptr;
}
template <class T>
const T* as() const {
return is<T>() ? reinterpret_cast<const T*>(this) : nullptr;
}
const std::string& getID() const;
// Create a new source with the specified `id`. All other properties
// are copied from this source.
std::unique_ptr<Source> copy(const std::string& id) const;
// Private implementation
class Impl;
const std::unique_ptr<Impl> baseImpl;
protected:
const SourceType type;
Source(SourceType, std::unique_ptr<Impl>);
};
} // namespace style
} // namespace mbgl
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