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diff --git a/platform/darwin/src/MGLComputedShapeSource.h b/platform/darwin/src/MGLComputedShapeSource.h
new file mode 100644
index 0000000000..f90f2c94b1
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+++ b/platform/darwin/src/MGLComputedShapeSource.h
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+#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. Methods on this protocol will not be
+ called on main thread, they will be called on the caller's `requestQueue`.
+ */
+@protocol MGLComputedShapeSourceDataSource <NSObject>
+
+@optional
+/**
+ Fetch features for a tile. This method will not be invoked on the main queue, it
+ will be invoked 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 method will not be invoked on the main queue, it
+ will be invoked 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.
+ 
+ Supported options are `MGLShapeSourceOptionMinimumZoomLevel`, `MGLShapeSourceOptionMaximumZoomLevel`,
+  `MGLShapeSourceOptionBuffer`, and `MGLShapeSourceOptionSimplificationTolerance.` This source does
+  not support clustering.
+ */
+MGL_EXPORT
+@interface MGLComputedShapeSource : MGLAbstractShapeSource
+
+/**
+ Returns a custom shape data source initialized with an identifier, 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;
+
+/**
+ Returns a custom shape 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 dataSource:(id<MGLComputedShapeSourceDataSource>)dataSource options:(nullable NS_DICTIONARY_OF(MGLShapeSourceOption, id) *)options;
+
+/**
+ Invalidates all the features and properties intersecting with or contained in
+ the specified bounds. New fetch requests will immediately be invoked on the
+ `MGLComputedShapeSourceDataSource`.
+ @param bounds  Coordinate bounds to invalidate.
+ */
+- (void) invalidateBounds:(MGLCoordinateBounds)bounds;
+
+/**
+ Invalidates all the feautres and properties of a given tile. A new fetch request
+ will immediately be invoked on the `MGLComputedShapeSourceDataSource`.
+ @param x Tile X coordinate.
+ @param y Tile Y coordinate.
+ @param zoomLevel Tile zoom level.
+ */
+- (void) invalidateTileAtX:(NSUInteger)x y:(NSUInteger)y zoomLevel:(NSUInteger)zoomLevel;
+
+/**
+ Set a new set of features for a tile. This method can be invkoed from background threads.
+ For best performance, use this method only to update tiles that have already been requested
+ through `MGLComputedShapeSourceDataSource.`
+ @param features  Features for the tile.
+ @param x         Tile X coordinate.
+ @param y         Tile Y coordinate.
+ @param zoomLevel Tile zoom level.
+ */
+- (void) setFeatures:(NSArray<MGLShape <MGLFeature> *>*)features inTileAtX:(NSUInteger)x y:(NSUInteger)y zoomLevel:(NSUInteger)zoomLevel;
+
+/**
+ An object that implements the `MGLComputedShapeSourceDataSource` 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