1 files changed, 67 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLComputedShapeSource.h b/platform/darwin/src/MGLComputedShapeSource.h
new file mode 100644
index 0000000000..d5326ccdf2
--- /dev/null
+++ b/platform/darwin/src/MGLComputedShapeSource.h
@@ -0,0 +1,67 @@
+#import "MGLAbstractShapeSource.h"
+
+#import "MGLFoundation.h"
+#import "MGLGeometry.h"
+#import "MGLTypes.h"
+#import "MGLShape.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol MGLFeature;
+
+/**
+ Data source for `MGLComputedShapeSource`. This protocol defines two optional methods for fetching
+ data, one based on tile coordinates, and one based on a bounding box. Classes that implement this
+ protocol must implement one, and only one of the methods.
+ */
+@protocol MGLComputedShapeSourceDataSource <NSObject>
+
+@optional
+/**
+ Fetch features for a tile. This will not be called on the main queue, it will be called on the caller's requestQueue.
+ @param x tile X coordinate
+ @param y tile Y coordinate
+ @param zoomLevel tile zoom level
+ */
+- (NSArray<MGLShape <MGLFeature> *>*)featuresInTileAtX:(NSUInteger)x y:(NSUInteger)y zoomLevel:(NSUInteger)zoomLevel;
+
+/**
+ Fetch features for a tile. This will not be called on the main queue, it will be called on the caller's requestQueue.
+ @param bounds The bounds to fetch data for
+ @param zoomLevel tile zoom level
+ */
+- (NSArray<MGLShape <MGLFeature> *>*)featuresInCoordinateBounds:(MGLCoordinateBounds)bounds zoomLevel:(NSUInteger)zoomLevel;
+
+@end
+
+/**
+ A source for vector data that is fetched one tile at a time. Useful for sources that are
+ too large to fit in memory, or are already divided into tiles, but not in Mapbox Vector Tile format.
+ */
+MGL_EXPORT
+@interface MGLComputedShapeSource : MGLAbstractShapeSource
+
+/**
+ Returns a custom vector data source initialized with an identifier, data source, and a
+ dictionary of options for the source according to the
+ <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources-geojson">style
+ specification</a>.
+
+ @param identifier A string that uniquely identifies the source.
+ @param options An `NSDictionary` of options for this source.
+ */
+- (instancetype)initWithIdentifier:(NSString *)identifier options:(nullable NS_DICTIONARY_OF(MGLShapeSourceOption, id) *)options NS_DESIGNATED_INITIALIZER;
+
+/**
+ An object that implements the `MGLComputedShapeSource` protocol that will be queried for tile data.
+ */
+@property (nonatomic, weak, nullable) id<MGLComputedShapeSourceDataSource> dataSource;
+
+/**
+ A queue that calls to the data source will be made on.
+ */
+@property (nonatomic, readonly) NSOperationQueue *requestQueue;
+
+@end
+
+NS_ASSUME_NONNULL_END