[ios, macos] Move private categories into explicitly private headers

Instead of creating `MGLAdditions` categories/files for our own classes, this standardizes on the `Private` convention that we had been using elsewhere.

This also fixes build errors where the `MGLAdditions` categories weren't importing their parents.

19 files changed, 143 insertions, 195 deletions

diff --git a/platform/darwin/src/MGLFeature.mm b/platform/darwin/src/MGLFeature.mm
index 84f1a1ff25..033052bda8 100644
--- a/platform/darwin/src/MGLFeature.mm
+++ b/platform/darwin/src/MGLFeature.mm
@@ -7,11 +7,11 @@
 
 #import "MGLShape_Private.h"
 #import "MGLPointCollection_Private.h"
-#import "MGLPolyline+MGLAdditions.h"
-#import "MGLPolygon+MGLAdditions.h"
+#import "MGLPolyline_Private.h"
+#import "MGLPolygon_Private.h"
+
 #import "NSDictionary+MGLAdditions.h"
 #import "NSArray+MGLAdditions.h"
-
 #import "NSExpression+MGLAdditions.h"
 
 #import <mbgl/util/geometry.hpp>
diff --git a/platform/darwin/src/MGLPolygon+MGLAdditions.h b/platform/darwin/src/MGLPolygon+MGLAdditions.h
deleted file mode 100644
index f409fb96ca..0000000000
--- a/platform/darwin/src/MGLPolygon+MGLAdditions.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#import <Mapbox/Mapbox.h>
-
-@interface MGLPolygon (MGLAdditions)
-
-- (NS_ARRAY_OF(id) *)mgl_coordinates;
-
-@end
diff --git a/platform/darwin/src/MGLPolygon+MGLAdditions.m b/platform/darwin/src/MGLPolygon+MGLAdditions.m
deleted file mode 100644
index 3e76a37157..0000000000
--- a/platform/darwin/src/MGLPolygon+MGLAdditions.m
+++ /dev/null
@@ -1,27 +0,0 @@
-#import "MGLPolygon+MGLAdditions.h"
-
-@implementation MGLPolygon (MGLAdditions)
-
-- (NS_ARRAY_OF(id) *)mgl_coordinates {
-    NSMutableArray *coordinates = [NSMutableArray array];
-
-    NSMutableArray *exteriorRing = [NSMutableArray array];
-    for (NSUInteger index = 0; index < self.pointCount; index++) {
-        CLLocationCoordinate2D coordinate = self.coordinates[index];
-        [exteriorRing addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
-    }
-    [coordinates addObject:exteriorRing];
-
-    for (MGLPolygon *interiorPolygon in self.interiorPolygons) {
-        NSMutableArray *interiorRing = [NSMutableArray array];
-        for (int index = 0; index < interiorPolygon.pointCount; index++) {
-            CLLocationCoordinate2D coordinate = interiorPolygon.coordinates[index];
-            [interiorRing addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
-        }
-        [coordinates addObject:interiorRing];
-    }
-
-    return [coordinates copy];
-}
-
-@end
diff --git a/platform/darwin/src/MGLPolygon.mm b/platform/darwin/src/MGLPolygon.mm
index e7843224e9..2af768d514 100644
--- a/platform/darwin/src/MGLPolygon.mm
+++ b/platform/darwin/src/MGLPolygon.mm
@@ -1,9 +1,9 @@
-#import "MGLPolygon.h"
+#import "MGLPolygon_Private.h"
 
 #import "MGLMultiPoint_Private.h"
 #import "MGLGeometry_Private.h"
 
-#import "MGLPolygon+MGLAdditions.h"
+#import "MGLFeature.h"
 
 #import <mbgl/util/geojson.hpp>
 #import <mapbox/polylabel.hpp>
@@ -102,6 +102,28 @@
              @"coordinates": self.mgl_coordinates};
 }
 
+- (NS_ARRAY_OF(id) *)mgl_coordinates {
+    NSMutableArray *coordinates = [NSMutableArray array];
+
+    NSMutableArray *exteriorRing = [NSMutableArray array];
+    for (NSUInteger index = 0; index < self.pointCount; index++) {
+        CLLocationCoordinate2D coordinate = self.coordinates[index];
+        [exteriorRing addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
+    }
+    [coordinates addObject:exteriorRing];
+
+    for (MGLPolygon *interiorPolygon in self.interiorPolygons) {
+        NSMutableArray *interiorRing = [NSMutableArray array];
+        for (int index = 0; index < interiorPolygon.pointCount; index++) {
+            CLLocationCoordinate2D coordinate = interiorPolygon.coordinates[index];
+            [interiorRing addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
+        }
+        [coordinates addObject:interiorRing];
+    }
+
+    return [coordinates copy];
+}
+
 @end
 
 @interface MGLMultiPolygon ()
diff --git a/platform/darwin/src/MGLPolygon_Private.h b/platform/darwin/src/MGLPolygon_Private.h
new file mode 100644
index 0000000000..75afcd61f6
--- /dev/null
+++ b/platform/darwin/src/MGLPolygon_Private.h
@@ -0,0 +1,11 @@
+#import "MGLPolygon.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MGLPolygon (Private)
+
+- (NS_ARRAY_OF(id) *)mgl_coordinates;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/platform/darwin/src/MGLPolyline+MGLAdditions.h b/platform/darwin/src/MGLPolyline+MGLAdditions.h
deleted file mode 100644
index 4cdbbf17f9..0000000000
--- a/platform/darwin/src/MGLPolyline+MGLAdditions.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#import <Mapbox/Mapbox.h>
-
-@interface MGLPolyline (MGLAdditions)
-
-- (NS_ARRAY_OF(id) *)mgl_coordinates;
-
-@end
diff --git a/platform/darwin/src/MGLPolyline+MGLAdditions.m b/platform/darwin/src/MGLPolyline+MGLAdditions.m
deleted file mode 100644
index d1db2c58a0..0000000000
--- a/platform/darwin/src/MGLPolyline+MGLAdditions.m
+++ /dev/null
@@ -1,14 +0,0 @@
-#import "MGLPolyline+MGLAdditions.h"
-
-@implementation MGLPolyline (MGLAdditions)
-
-- (NS_ARRAY_OF(id) *)mgl_coordinates {
-    NSMutableArray *coordinates = [[NSMutableArray alloc] initWithCapacity:self.pointCount];
-    for (NSUInteger index = 0; index < self.pointCount; index++) {
-        CLLocationCoordinate2D coordinate = self.coordinates[index];
-        [coordinates addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
-    }
-    return [coordinates copy];
-}
-
-@end
diff --git a/platform/darwin/src/MGLPolyline.mm b/platform/darwin/src/MGLPolyline.mm
index 0e371a4dda..e011d09215 100644
--- a/platform/darwin/src/MGLPolyline.mm
+++ b/platform/darwin/src/MGLPolyline.mm
@@ -1,9 +1,9 @@
-#import "MGLPolyline.h"
+#import "MGLPolyline_Private.h"
 
 #import "MGLMultiPoint_Private.h"
 #import "MGLGeometry_Private.h"
 
-#import "MGLPolyline+MGLAdditions.h"
+#import "MGLFeature.h"
 
 #import <mbgl/util/geojson.hpp>
 #import <mapbox/polylabel.hpp>
@@ -49,6 +49,15 @@
              @"coordinates": self.mgl_coordinates};
 }
 
+- (NS_ARRAY_OF(id) *)mgl_coordinates {
+    NSMutableArray *coordinates = [[NSMutableArray alloc] initWithCapacity:self.pointCount];
+    for (NSUInteger index = 0; index < self.pointCount; index++) {
+        CLLocationCoordinate2D coordinate = self.coordinates[index];
+        [coordinates addObject:@[@(coordinate.longitude), @(coordinate.latitude)]];
+    }
+    return [coordinates copy];
+}
+
 - (BOOL)isEqual:(id)other {
     return self == other || ([other isKindOfClass:[MGLPolyline class]] && [super isEqual:other]);
 }
diff --git a/platform/darwin/src/MGLPolyline_Private.h b/platform/darwin/src/MGLPolyline_Private.h
new file mode 100644
index 0000000000..405a0c5bc9
--- /dev/null
+++ b/platform/darwin/src/MGLPolyline_Private.h
@@ -0,0 +1,12 @@
+#import "MGLPolyline.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MGLPolyline (Private)
+
+- (NS_ARRAY_OF(id) *)mgl_coordinates;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
diff --git a/platform/darwin/src/MGLStyle.mm b/platform/darwin/src/MGLStyle.mm
index 71f2785a94..f04ae2b104 100644
--- a/platform/darwin/src/MGLStyle.mm
+++ b/platform/darwin/src/MGLStyle.mm
@@ -17,7 +17,7 @@
 #import "MGLLight_Private.h"
 #import "MGLTileSource_Private.h"
 #import "MGLVectorSource.h"
-#import "MGLVectorSource+MGLAdditions.h"
+#import "MGLVectorSource_Private.h"
 #import "MGLRasterSource.h"
 #import "MGLShapeSource.h"
 #import "MGLImageSource.h"
diff --git a/platform/darwin/src/MGLVectorSource+MGLAdditions.h b/platform/darwin/src/MGLVectorSource+MGLAdditions.h
deleted file mode 100644
index 43b0aba747..0000000000
--- a/platform/darwin/src/MGLVectorSource+MGLAdditions.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#import <Mapbox/Mapbox.h>
-
-NS_ASSUME_NONNULL_BEGIN
-
-@interface MGLVectorSource (MGLAdditions)
-
-+ (NSString *)preferredMapboxStreetsLanguage;
-
-- (NS_DICTIONARY_OF(NSString *, NSString *) *)localizedKeysByKeyForPreferredLanguage:(nullable NSString *)preferredLanguage;
-
-@property (nonatomic, readonly, getter=isMapboxStreets) BOOL mapboxStreets;
-
-@end
-
-NS_ASSUME_NONNULL_END
diff --git a/platform/darwin/src/MGLVectorSource+MGLAdditions.m b/platform/darwin/src/MGLVectorSource+MGLAdditions.m
deleted file mode 100644
index a305388117..0000000000
--- a/platform/darwin/src/MGLVectorSource+MGLAdditions.m
+++ /dev/null
@@ -1,53 +0,0 @@
-#import "MGLVectorSource+MGLAdditions.h"
-
-@implementation MGLVectorSource (MGLAdditions)
-
-+ (NS_SET_OF(NSString *) *)mapboxStreetsLanguages {
-    // https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
-    static dispatch_once_t onceToken;
-    static NS_SET_OF(NSString *) *mapboxStreetsLanguages;
-    dispatch_once(&onceToken, ^{
-        // https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
-        mapboxStreetsLanguages = [NSSet setWithObjects:@"ar", @"de", @"en", @"es", @"fr", @"pt", @"ru", @"zh", @"zh-Hans", nil];
-    });
-    return mapboxStreetsLanguages;
-}
-
-+ (NSString *)preferredMapboxStreetsLanguage {
-    NSArray<NSString *> *supportedLanguages = [MGLVectorSource mapboxStreetsLanguages].allObjects;
-    NSArray<NSString *> *preferredLanguages = [NSBundle preferredLocalizationsFromArray:supportedLanguages
-                                                                         forPreferences:[NSLocale preferredLanguages]];
-    NSString *mostSpecificLanguage;
-    for (NSString *language in preferredLanguages) {
-        if (language.length > mostSpecificLanguage.length) {
-            mostSpecificLanguage = language;
-        }
-    }
-    return mostSpecificLanguage ?: @"en";
-}
-
-- (BOOL)isMapboxStreets {
-    NSURL *url = self.configurationURL;
-    if (![url.scheme isEqualToString:@"mapbox"]) {
-        return NO;
-    }
-    NSArray *identifiers = [url.host componentsSeparatedByString:@","];
-    return [identifiers containsObject:@"mapbox.mapbox-streets-v7"] || [identifiers containsObject:@"mapbox.mapbox-streets-v6"];
-}
-
-- (NS_DICTIONARY_OF(NSString *, NSString *) *)localizedKeysByKeyForPreferredLanguage:(nullable NSString *)preferredLanguage {
-    if (!self.mapboxStreets) {
-        return @{};
-    }
-
-    // Replace {name} and {name_*} with the matching localized name tag.
-    NSString *localizedKey = preferredLanguage ? [NSString stringWithFormat:@"name_%@", preferredLanguage] : @"name";
-    NSMutableDictionary *localizedKeysByKey = [NSMutableDictionary dictionaryWithObject:localizedKey forKey:@"name"];
-    for (NSString *languageCode in [MGLVectorSource mapboxStreetsLanguages]) {
-        NSString *key = [NSString stringWithFormat:@"name_%@", languageCode];
-        localizedKeysByKey[key] = localizedKey;
-    }
-    return localizedKeysByKey;
-}
-
-@end
diff --git a/platform/darwin/src/MGLVectorSource.mm b/platform/darwin/src/MGLVectorSource.mm
index b1bda56f2d..90ffe6f98b 100644
--- a/platform/darwin/src/MGLVectorSource.mm
+++ b/platform/darwin/src/MGLVectorSource.mm
@@ -5,6 +5,7 @@
 #import "MGLTileSource_Private.h"
 #import "MGLStyle_Private.h"
 #import "MGLMapView_Private.h"
+
 #import "NSPredicate+MGLAdditions.h"
 #import "NSURL+MGLAdditions.h"
 
@@ -71,3 +72,55 @@
 }
 
 @end
+
+@implementation MGLVectorSource (Private)
+
++ (NS_SET_OF(NSString *) *)mapboxStreetsLanguages {
+    // https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
+    static dispatch_once_t onceToken;
+    static NS_SET_OF(NSString *) *mapboxStreetsLanguages;
+    dispatch_once(&onceToken, ^{
+        // https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
+        mapboxStreetsLanguages = [NSSet setWithObjects:@"ar", @"de", @"en", @"es", @"fr", @"pt", @"ru", @"zh", @"zh-Hans", nil];
+    });
+    return mapboxStreetsLanguages;
+}
+
++ (NSString *)preferredMapboxStreetsLanguage {
+    NSArray<NSString *> *supportedLanguages = [MGLVectorSource mapboxStreetsLanguages].allObjects;
+    NSArray<NSString *> *preferredLanguages = [NSBundle preferredLocalizationsFromArray:supportedLanguages
+                                                                         forPreferences:[NSLocale preferredLanguages]];
+    NSString *mostSpecificLanguage;
+    for (NSString *language in preferredLanguages) {
+        if (language.length > mostSpecificLanguage.length) {
+            mostSpecificLanguage = language;
+        }
+    }
+    return mostSpecificLanguage ?: @"en";
+}
+
+- (BOOL)isMapboxStreets {
+    NSURL *url = self.configurationURL;
+    if (![url.scheme isEqualToString:@"mapbox"]) {
+        return NO;
+    }
+    NSArray *identifiers = [url.host componentsSeparatedByString:@","];
+    return [identifiers containsObject:@"mapbox.mapbox-streets-v7"] || [identifiers containsObject:@"mapbox.mapbox-streets-v6"];
+}
+
+- (NS_DICTIONARY_OF(NSString *, NSString *) *)localizedKeysByKeyForPreferredLanguage:(nullable NSString *)preferredLanguage {
+    if (!self.mapboxStreets) {
+        return @{};
+    }
+
+    // Replace {name} and {name_*} with the matching localized name tag.
+    NSString *localizedKey = preferredLanguage ? [NSString stringWithFormat:@"name_%@", preferredLanguage] : @"name";
+    NSMutableDictionary *localizedKeysByKey = [NSMutableDictionary dictionaryWithObject:localizedKey forKey:@"name"];
+    for (NSString *languageCode in [MGLVectorSource mapboxStreetsLanguages]) {
+        NSString *key = [NSString stringWithFormat:@"name_%@", languageCode];
+        localizedKeysByKey[key] = localizedKey;
+    }
+    return localizedKeysByKey;
+}
+
+@end
diff --git a/platform/darwin/src/MGLVectorSource_Private.h b/platform/darwin/src/MGLVectorSource_Private.h
index 335743173e..233809aea2 100644
--- a/platform/darwin/src/MGLVectorSource_Private.h
+++ b/platform/darwin/src/MGLVectorSource_Private.h
@@ -3,6 +3,13 @@
 NS_ASSUME_NONNULL_BEGIN
 
 @interface MGLVectorSource (Private)
+
+@property (nonatomic, readonly, getter=isMapboxStreets) BOOL mapboxStreets;
+
++ (NSString *)preferredMapboxStreetsLanguage;
+
+- (NS_DICTIONARY_OF(NSString *, NSString *) *)localizedKeysByKeyForPreferredLanguage:(nullable NSString *)preferredLanguage;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/platform/ios/ios.xcodeproj/project.pbxproj b/platform/ios/ios.xcodeproj/project.pbxproj
index b2d204c122..a6b3372eb7 100644
--- a/platform/ios/ios.xcodeproj/project.pbxproj
+++ b/platform/ios/ios.xcodeproj/project.pbxproj
@@ -30,10 +30,6 @@
 		1F7454971ECD450D00021D39 /* MGLLight_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 1F7454941ECD450D00021D39 /* MGLLight_Private.h */; };
 		1F7454A91ED08AB400021D39 /* MGLLightTest.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1F7454A61ED08AB400021D39 /* MGLLightTest.mm */; };
 		1F95931D1E6DE2E900D5B294 /* MGLNSDateAdditionsTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1F95931C1E6DE2E900D5B294 /* MGLNSDateAdditionsTests.mm */; };
-		1FB7DAAF1F2A4DBD00410606 /* MGLVectorSource+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */; };
-		1FB7DAB01F2A4DC200410606 /* MGLVectorSource+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */; };
-		1FB7DAB11F2A4DC800410606 /* MGLVectorSource+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */; };
-		1FB7DAB21F2A4DC900410606 /* MGLVectorSource+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */; };
 		30E578171DAA85520050F07E /* UIImage+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 30E578111DAA7D690050F07E /* UIImage+MGLAdditions.h */; };
 		30E578181DAA85520050F07E /* UIImage+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 30E578111DAA7D690050F07E /* UIImage+MGLAdditions.h */; };
 		30E578191DAA855E0050F07E /* UIImage+MGLAdditions.mm in Sources */ = {isa = PBXBuildFile; fileRef = 30E578121DAA7D690050F07E /* UIImage+MGLAdditions.mm */; };
@@ -223,14 +219,6 @@
 		55E2AD131E5B125400E8C587 /* MGLOfflineStorageTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 55E2AD121E5B125400E8C587 /* MGLOfflineStorageTests.mm */; };
 		632281DF1E6F855900D75A5D /* MBXEmbeddedMapViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 632281DE1E6F855900D75A5D /* MBXEmbeddedMapViewController.m */; };
 		6407D6701E0085FD00F6A9C3 /* MGLDocumentationExampleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6407D66F1E0085FD00F6A9C3 /* MGLDocumentationExampleTests.swift */; };
-		7E016D7E1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */; };
-		7E016D7F1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */; };
-		7E016D801D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 7E016D7D1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m */; };
-		7E016D811D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 7E016D7D1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m */; };
-		7E016D841D9E890300A29A21 /* MGLPolygon+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D821D9E890300A29A21 /* MGLPolygon+MGLAdditions.h */; };
-		7E016D851D9E890300A29A21 /* MGLPolygon+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 7E016D821D9E890300A29A21 /* MGLPolygon+MGLAdditions.h */; };
-		7E016D861D9E890300A29A21 /* MGLPolygon+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 7E016D831D9E890300A29A21 /* MGLPolygon+MGLAdditions.m */; };
-		7E016D871D9E890300A29A21 /* MGLPolygon+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 7E016D831D9E890300A29A21 /* MGLPolygon+MGLAdditions.m */; };
 		920A3E5D1E6F995200C16EFC /* MGLSourceQueryTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 920A3E5C1E6F995200C16EFC /* MGLSourceQueryTests.m */; };
 		927FBCFC1F4DAA8300F8BF1F /* MBXSnapshotsViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 927FBCFB1F4DAA8300F8BF1F /* MBXSnapshotsViewController.m */; };
 		927FBCFF1F4DB05500F8BF1F /* MGLMapSnapshotter.h in Headers */ = {isa = PBXBuildFile; fileRef = 927FBCFD1F4DB05500F8BF1F /* MGLMapSnapshotter.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -245,6 +233,8 @@
 		9620BB391E69FE1700705A1D /* MGLSDKUpdateChecker.h in Headers */ = {isa = PBXBuildFile; fileRef = 9620BB361E69FE1700705A1D /* MGLSDKUpdateChecker.h */; };
 		9620BB3A1E69FE1700705A1D /* MGLSDKUpdateChecker.mm in Sources */ = {isa = PBXBuildFile; fileRef = 9620BB371E69FE1700705A1D /* MGLSDKUpdateChecker.mm */; };
 		9620BB3B1E69FE1700705A1D /* MGLSDKUpdateChecker.mm in Sources */ = {isa = PBXBuildFile; fileRef = 9620BB371E69FE1700705A1D /* MGLSDKUpdateChecker.mm */; };
+		9654C1261FFC1AB900DB6A19 /* MGLPolyline_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 9654C1251FFC1AB900DB6A19 /* MGLPolyline_Private.h */; };
+		9654C1291FFC1CCD00DB6A19 /* MGLPolygon_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 9654C1271FFC1CC000DB6A19 /* MGLPolygon_Private.h */; };
 		966FCF4C1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.h in Headers */ = {isa = PBXBuildFile; fileRef = 966FCF4A1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.h */; };
 		966FCF4E1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = 966FCF4B1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m */; };
 		966FCF4F1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = 966FCF4B1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m */; };
@@ -600,8 +590,6 @@
 		1F7454941ECD450D00021D39 /* MGLLight_Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLLight_Private.h; sourceTree = "<group>"; };
 		1F7454A61ED08AB400021D39 /* MGLLightTest.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = MGLLightTest.mm; path = ../../darwin/test/MGLLightTest.mm; sourceTree = "<group>"; };
 		1F95931C1E6DE2E900D5B294 /* MGLNSDateAdditionsTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = MGLNSDateAdditionsTests.mm; path = ../../darwin/test/MGLNSDateAdditionsTests.mm; sourceTree = "<group>"; };
-		1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLVectorSource+MGLAdditions.h"; sourceTree = "<group>"; };
-		1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLVectorSource+MGLAdditions.m"; sourceTree = "<group>"; };
 		20DABE861DF78148007AC5FF /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/Foundation.strings"; sourceTree = "<group>"; };
 		20DABE881DF78148007AC5FF /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/Localizable.strings"; sourceTree = "<group>"; };
 		20DABE8A1DF78149007AC5FF /* zh-Hans */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hans"; path = "zh-Hans.lproj/Root.strings"; sourceTree = "<group>"; };
@@ -729,10 +717,6 @@
 		632281DD1E6F855900D75A5D /* MBXEmbeddedMapViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MBXEmbeddedMapViewController.h; sourceTree = "<group>"; };
 		632281DE1E6F855900D75A5D /* MBXEmbeddedMapViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MBXEmbeddedMapViewController.m; sourceTree = "<group>"; };
 		6407D66F1E0085FD00F6A9C3 /* MGLDocumentationExampleTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = MGLDocumentationExampleTests.swift; path = ../../darwin/test/MGLDocumentationExampleTests.swift; sourceTree = "<group>"; };
-		7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLPolyline+MGLAdditions.h"; sourceTree = "<group>"; };
-		7E016D7D1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLPolyline+MGLAdditions.m"; sourceTree = "<group>"; };
-		7E016D821D9E890300A29A21 /* MGLPolygon+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLPolygon+MGLAdditions.h"; sourceTree = "<group>"; };
-		7E016D831D9E890300A29A21 /* MGLPolygon+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLPolygon+MGLAdditions.m"; sourceTree = "<group>"; };
 		920A3E5C1E6F995200C16EFC /* MGLSourceQueryTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = MGLSourceQueryTests.m; path = ../../darwin/test/MGLSourceQueryTests.m; sourceTree = "<group>"; };
 		927FBCFA1F4DAA8300F8BF1F /* MBXSnapshotsViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MBXSnapshotsViewController.h; sourceTree = "<group>"; };
 		927FBCFB1F4DAA8300F8BF1F /* MBXSnapshotsViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MBXSnapshotsViewController.m; sourceTree = "<group>"; };
@@ -742,6 +726,8 @@
 		960D0C351ECF5AAF008E151F /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Images.xcassets; sourceTree = "<group>"; };
 		9620BB361E69FE1700705A1D /* MGLSDKUpdateChecker.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLSDKUpdateChecker.h; sourceTree = "<group>"; };
 		9620BB371E69FE1700705A1D /* MGLSDKUpdateChecker.mm */ = {isa = PBXFileReference; explicitFileType = sourcecode.cpp.objcpp; fileEncoding = 4; path = MGLSDKUpdateChecker.mm; sourceTree = "<group>"; };
+		9654C1251FFC1AB900DB6A19 /* MGLPolyline_Private.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MGLPolyline_Private.h; sourceTree = "<group>"; };
+		9654C1271FFC1CC000DB6A19 /* MGLPolygon_Private.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MGLPolygon_Private.h; sourceTree = "<group>"; };
 		9660916B1E5BBFD700A9A03B /* es */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = es; path = es.lproj/Localizable.strings; sourceTree = "<group>"; };
 		9660916C1E5BBFD900A9A03B /* pl */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = pl; path = pl.lproj/Localizable.strings; sourceTree = "<group>"; };
 		9660916D1E5BBFDB00A9A03B /* ru */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ru; path = ru.lproj/Localizable.strings; sourceTree = "<group>"; };
@@ -1152,8 +1138,6 @@
 		35599DB81D46AD7F0048254D /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */,
-				1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */,
 				350098DA1D484E60004B2AF0 /* NSValue+MGLStyleAttributeAdditions.h */,
 				350098DB1D484E60004B2AF0 /* NSValue+MGLStyleAttributeAdditions.mm */,
 			);
@@ -1629,8 +1613,10 @@
 				4049C2AB1DB6E05500B3F799 /* MGLPointCollection_Private.h */,
 				4049C29C1DB6CD6C00B3F799 /* MGLPointCollection.mm */,
 				DA8847E91CBAFA5100AB86E3 /* MGLPolygon.h */,
+				9654C1271FFC1CC000DB6A19 /* MGLPolygon_Private.h */,
 				DA88480C1CBAFA6200AB86E3 /* MGLPolygon.mm */,
 				DA8847EA1CBAFA5100AB86E3 /* MGLPolyline.h */,
+				9654C1251FFC1AB900DB6A19 /* MGLPolyline_Private.h */,
 				DA88480D1CBAFA6200AB86E3 /* MGLPolyline.mm */,
 				DA8847EB1CBAFA5100AB86E3 /* MGLShape.h */,
 				40CF6DBA1DAC3C1800A4D18B /* MGLShape_Private.h */,
@@ -1661,10 +1647,6 @@
 		DAD165831CF4CFED001FF4B9 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				7E016D821D9E890300A29A21 /* MGLPolygon+MGLAdditions.h */,
-				7E016D831D9E890300A29A21 /* MGLPolygon+MGLAdditions.m */,
-				7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */,
-				7E016D7D1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m */,
 				400532FF1DB0862B0069F638 /* NSArray+MGLAdditions.h */,
 				400533001DB0862B0069F638 /* NSArray+MGLAdditions.mm */,
 				DA8848121CBAFA6200AB86E3 /* NSBundle+MGLAdditions.h */,
@@ -1764,15 +1746,14 @@
 				35E1A4D81D74336F007AA97F /* MGLValueEvaluator.h in Headers */,
 				DA88482C1CBAFA6200AB86E3 /* NSBundle+MGLAdditions.h in Headers */,
 				357FE2DD1E02D2B20068B753 /* NSCoder+MGLAdditions.h in Headers */,
-				7E016D7E1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */,
 				35D13AB71D3D15E300AFB4E0 /* MGLStyleLayer.h in Headers */,
 				07D947531F67488E00E37934 /* MGLAbstractShapeSource_Private.h in Headers */,
+				9654C1261FFC1AB900DB6A19 /* MGLPolyline_Private.h in Headers */,
 				DA88488E1CBB047F00AB86E3 /* reachability.h in Headers */,
 				40F887701D7A1E58008ECB67 /* MGLShapeSource_Private.h in Headers */,
 				350098DC1D484E60004B2AF0 /* NSValue+MGLStyleAttributeAdditions.h in Headers */,
 				DA8848231CBAFA6200AB86E3 /* MGLOfflineStorage_Private.h in Headers */,
 				404326891D5B9B27007111BD /* MGLAnnotationContainerView_Private.h in Headers */,
-				1FB7DAAF1F2A4DBD00410606 /* MGLVectorSource+MGLAdditions.h in Headers */,
 				DA88483B1CBAFB8500AB86E3 /* MGLCalloutView.h in Headers */,
 				35E0CFE61D3E501500188327 /* MGLStyle_Private.h in Headers */,
 				3510FFF01D6D9D8C00F413B2 /* NSExpression+MGLAdditions.h in Headers */,
@@ -1789,12 +1770,12 @@
 				DAF0D8131DFE0EC500B28378 /* MGLVectorSource_Private.h in Headers */,
 				354B83961D2E873E005D9406 /* MGLUserLocationAnnotationView.h in Headers */,
 				DA8847F01CBAFA5100AB86E3 /* MGLAnnotation.h in Headers */,
-				7E016D841D9E890300A29A21 /* MGLPolygon+MGLAdditions.h in Headers */,
 				400533011DB0862B0069F638 /* NSArray+MGLAdditions.h in Headers */,
 				1F06668A1EC64F8E001C16D7 /* MGLLight.h in Headers */,
 				4049C29D1DB6CD6C00B3F799 /* MGLPointCollection.h in Headers */,
 				40CF6DBB1DAC3C6600A4D18B /* MGLShape_Private.h in Headers */,
 				4018B1CA1CDC288E00F666AF /* MGLAnnotationView.h in Headers */,
+				9654C1291FFC1CCD00DB6A19 /* MGLPolygon_Private.h in Headers */,
 				35E79F201D41266300957B9E /* MGLStyleLayer_Private.h in Headers */,
 				FA68F14A1E9D656600F9F6C2 /* MGLFillExtrusionStyleLayer.h in Headers */,
 				353933FB1D3FB7C0003F57D7 /* MGLRasterStyleLayer.h in Headers */,
@@ -1921,7 +1902,6 @@
 				9620BB391E69FE1700705A1D /* MGLSDKUpdateChecker.h in Headers */,
 				3510FFEB1D6D9C7A00F413B2 /* NSComparisonPredicate+MGLAdditions.h in Headers */,
 				35E1A4D91D74336F007AA97F /* MGLValueEvaluator.h in Headers */,
-				7E016D7F1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h in Headers */,
 				DABFB8701CBE9A0F00D62B32 /* MGLMapView+IBAdditions.h in Headers */,
 				353AFA151D65AB17005A69F4 /* NSDate+MGLAdditions.h in Headers */,
 				3510FFFA1D6DCC4700F413B2 /* NSCompoundPredicate+MGLAdditions.h in Headers */,
@@ -1955,7 +1935,6 @@
 				968F36B51E4D128D003A5522 /* MGLDistanceFormatter.h in Headers */,
 				4018B1CB1CDC288E00F666AF /* MGLAnnotationView.h in Headers */,
 				DABFB85F1CBE99E500D62B32 /* MGLGeometry.h in Headers */,
-				7E016D851D9E890300A29A21 /* MGLPolygon+MGLAdditions.h in Headers */,
 				353933F61D3FB785003F57D7 /* MGLBackgroundStyleLayer.h in Headers */,
 				DABFB85D1CBE99E500D62B32 /* MGLAccountManager.h in Headers */,
 				353933F91D3FB79F003F57D7 /* MGLLineStyleLayer.h in Headers */,
@@ -1963,7 +1942,6 @@
 				35136D4D1D4277FC00C20EFD /* MGLSource.h in Headers */,
 				DA35A2BC1CCA9A6900E826B2 /* MGLClockDirectionFormatter.h in Headers */,
 				35D13AC41D3D19DD00AFB4E0 /* MGLFillStyleLayer.h in Headers */,
-				1FB7DAB01F2A4DC200410606 /* MGLVectorSource+MGLAdditions.h in Headers */,
 				DABFB86E1CBE9A0F00D62B32 /* MGLCalloutView.h in Headers */,
 				1F7454971ECD450D00021D39 /* MGLLight_Private.h in Headers */,
 				DABFB8601CBE99E500D62B32 /* MGLMapCamera.h in Headers */,
@@ -2341,12 +2319,10 @@
 			files = (
 				35136D391D42271A00C20EFD /* MGLBackgroundStyleLayer.mm in Sources */,
 				3510FFEC1D6D9C7A00F413B2 /* NSComparisonPredicate+MGLAdditions.mm in Sources */,
-				7E016D801D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m in Sources */,
 				DAED38651D62D0FC00D7640F /* NSURL+MGLAdditions.m in Sources */,
 				9620BB3A1E69FE1700705A1D /* MGLSDKUpdateChecker.mm in Sources */,
 				354B83981D2E873E005D9406 /* MGLUserLocationAnnotationView.m in Sources */,
 				DA88485D1CBAFB9800AB86E3 /* MGLFaux3DUserLocationAnnotationView.m in Sources */,
-				1FB7DAB11F2A4DC800410606 /* MGLVectorSource+MGLAdditions.m in Sources */,
 				DAD165701CF41981001FF4B9 /* MGLFeature.mm in Sources */,
 				30E578191DAA855E0050F07E /* UIImage+MGLAdditions.mm in Sources */,
 				40EDA1C11CFE0E0500D9EA68 /* MGLAnnotationContainerView.m in Sources */,
@@ -2404,7 +2380,6 @@
 				DA88481D1CBAFA6200AB86E3 /* MGLMapCamera.mm in Sources */,
 				DA8848261CBAFA6200AB86E3 /* MGLPolygon.mm in Sources */,
 				35B82BFA1D6C5F8400B1B721 /* NSPredicate+MGLAdditions.mm in Sources */,
-				7E016D861D9E890300A29A21 /* MGLPolygon+MGLAdditions.m in Sources */,
 				DA8848521CBAFB9800AB86E3 /* MGLAPIClient.m in Sources */,
 				966FCF4E1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m in Sources */,
 				DA8848301CBAFA6200AB86E3 /* NSProcessInfo+MGLAdditions.m in Sources */,
@@ -2432,12 +2407,10 @@
 			files = (
 				35136D3A1D42271A00C20EFD /* MGLBackgroundStyleLayer.mm in Sources */,
 				3510FFED1D6D9C7A00F413B2 /* NSComparisonPredicate+MGLAdditions.mm in Sources */,
-				7E016D811D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.m in Sources */,
 				354B83991D2E873E005D9406 /* MGLUserLocationAnnotationView.m in Sources */,
 				9620BB3B1E69FE1700705A1D /* MGLSDKUpdateChecker.mm in Sources */,
 				DAA4E4221CBB730400178DFB /* MGLPointAnnotation.mm in Sources */,
 				DAED38661D62D0FC00D7640F /* NSURL+MGLAdditions.m in Sources */,
-				1FB7DAB21F2A4DC900410606 /* MGLVectorSource+MGLAdditions.m in Sources */,
 				DAD165711CF41981001FF4B9 /* MGLFeature.mm in Sources */,
 				30E5781A1DAA855E0050F07E /* UIImage+MGLAdditions.mm in Sources */,
 				40EDA1C21CFE0E0500D9EA68 /* MGLAnnotationContainerView.m in Sources */,
@@ -2494,7 +2467,6 @@
 				07D8C6FB1F67560100381808 /* MGLComputedShapeSource.mm in Sources */,
 				DAA4E4341CBB730400178DFB /* MGLFaux3DUserLocationAnnotationView.m in Sources */,
 				35B82BFB1D6C5F8400B1B721 /* NSPredicate+MGLAdditions.mm in Sources */,
-				7E016D871D9E890300A29A21 /* MGLPolygon+MGLAdditions.m in Sources */,
 				DAA4E4311CBB730400178DFB /* MGLMapboxEvents.m in Sources */,
 				966FCF4F1F3A5C9200F2B6DE /* MGLUserLocationHeadingBeamLayer.m in Sources */,
 				DAA4E4231CBB730400178DFB /* MGLPolygon.mm in Sources */,
diff --git a/platform/ios/src/MGLMapAccessibilityElement.mm b/platform/ios/src/MGLMapAccessibilityElement.mm
index 4e5f165fbf..1a2953b0bb 100644
--- a/platform/ios/src/MGLMapAccessibilityElement.mm
+++ b/platform/ios/src/MGLMapAccessibilityElement.mm
@@ -2,10 +2,11 @@
 #import "MGLDistanceFormatter.h"
 #import "MGLCompassDirectionFormatter.h"
 #import "MGLFeature.h"
-#import "MGLVectorSource+MGLAdditions.h"
 
-#import "NSBundle+MGLAdditions.h"
 #import "MGLGeometry_Private.h"
+#import "MGLVectorSource_Private.h"
+
+#import "NSBundle+MGLAdditions.h"
 
 @implementation MGLMapAccessibilityElement
 
diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
index c60e56f808..8dec9e520d 100644
--- a/platform/ios/src/MGLMapView.mm
+++ b/platform/ios/src/MGLMapView.mm
@@ -41,11 +41,11 @@
 #import "MGLGeometry_Private.h"
 #import "MGLMultiPoint_Private.h"
 #import "MGLOfflineStorage_Private.h"
+#import "MGLVectorSource_Private.h"
 #import "MGLFoundation_Private.h"
 #import "MGLRendererFrontend.h"
 #import "MGLRendererConfiguration.h"
 
-#import "MGLVectorSource+MGLAdditions.h"
 #import "NSBundle+MGLAdditions.h"
 #import "NSDate+MGLAdditions.h"
 #import "NSException+MGLAdditions.h"
diff --git a/platform/macos/app/MapDocument.m b/platform/macos/app/MapDocument.m
index 8f23a0248a..eb20063996 100644
--- a/platform/macos/app/MapDocument.m
+++ b/platform/macos/app/MapDocument.m
@@ -6,7 +6,7 @@
 #import "MGLMapsnapshotter.h"
 
 #import "MGLStyle+MBXAdditions.h"
-#import "MGLVectorSource+MGLAdditions.h"
+#import "MGLVectorSource_Private.h"
 
 #import <Mapbox/Mapbox.h>
 
diff --git a/platform/macos/macos.xcodeproj/project.pbxproj b/platform/macos/macos.xcodeproj/project.pbxproj
index bd1fefb43e..ded17d003a 100644
--- a/platform/macos/macos.xcodeproj/project.pbxproj
+++ b/platform/macos/macos.xcodeproj/project.pbxproj
@@ -22,8 +22,6 @@
 		1F7454A51ECFB00300021D39 /* MGLLight.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1F7454A21ECFB00300021D39 /* MGLLight.mm */; };
 		1F7454AB1ED1DDBD00021D39 /* MGLLightTest.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1F7454AA1ED1DDBD00021D39 /* MGLLightTest.mm */; };
 		1F95931B1E6DE2B600D5B294 /* MGLNSDateAdditionsTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1F95931A1E6DE2B600D5B294 /* MGLNSDateAdditionsTests.mm */; };
-		1FCDF1421F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 1FCDF1401F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h */; };
-		1FCDF1431F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 1FCDF1411F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m */; };
 		30E5781B1DAA857E0050F07E /* NSImage+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 30E578141DAA7D920050F07E /* NSImage+MGLAdditions.h */; };
 		3508EC641D749D39009B0EE4 /* NSExpression+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 3508EC621D749D39009B0EE4 /* NSExpression+MGLAdditions.h */; };
 		3508EC651D749D39009B0EE4 /* NSExpression+MGLAdditions.mm in Sources */ = {isa = PBXBuildFile; fileRef = 3508EC631D749D39009B0EE4 /* NSExpression+MGLAdditions.mm */; };
@@ -71,11 +69,7 @@
 		4049C2A51DB6CE7F00B3F799 /* MGLPointCollection.h in Headers */ = {isa = PBXBuildFile; fileRef = 4049C2A11DB6CE7800B3F799 /* MGLPointCollection.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		4049C2AD1DB8020600B3F799 /* MGLPointCollection.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4049C2A71DB6D09B00B3F799 /* MGLPointCollection.mm */; };
 		408AA85B1DAEECFE00022900 /* MGLShape_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 408AA85A1DAEECF100022900 /* MGLShape_Private.h */; };
-		408AA8651DAEEE3400022900 /* MGLPolygon+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 408AA8601DAEED3300022900 /* MGLPolygon+MGLAdditions.h */; };
-		408AA8661DAEEE3600022900 /* MGLPolyline+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 408AA8611DAEED3300022900 /* MGLPolyline+MGLAdditions.h */; };
 		408AA8671DAEEE3900022900 /* NSDictionary+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 408AA85F1DAEED3300022900 /* NSDictionary+MGLAdditions.h */; };
-		408AA8681DAEEE5200022900 /* MGLPolygon+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 408AA85C1DAEED3300022900 /* MGLPolygon+MGLAdditions.m */; };
-		408AA8691DAEEE5500022900 /* MGLPolyline+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = 408AA85D1DAEED3300022900 /* MGLPolyline+MGLAdditions.m */; };
 		408AA86A1DAEEE5D00022900 /* NSDictionary+MGLAdditions.mm in Sources */ = {isa = PBXBuildFile; fileRef = 408AA85E1DAEED3300022900 /* NSDictionary+MGLAdditions.mm */; };
 		40ABDB561DB0022100372083 /* NSImage+MGLAdditions.mm in Sources */ = {isa = PBXBuildFile; fileRef = 405C03971DB0004E001AC280 /* NSImage+MGLAdditions.mm */; };
 		40B77E451DB11BC9003DA2FE /* NSArray+MGLAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 40B77E431DB11BB0003DA2FE /* NSArray+MGLAdditions.h */; };
@@ -95,6 +89,8 @@
 		92092EF11F5EB10E00AF5130 /* MGLMapSnapshotter.mm in Sources */ = {isa = PBXBuildFile; fileRef = 92092EEF1F5EB10E00AF5130 /* MGLMapSnapshotter.mm */; };
 		920A3E591E6F859D00C16EFC /* MGLSourceQueryTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 920A3E581E6F859D00C16EFC /* MGLSourceQueryTests.m */; };
 		92F2C3EB1F0E3A1900268EC0 /* MGLRendererFrontend.h in Headers */ = {isa = PBXBuildFile; fileRef = 92F2C3EA1F0E3A1900268EC0 /* MGLRendererFrontend.h */; };
+		9654C12B1FFC38E000DB6A19 /* MGLPolyline_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 9654C12A1FFC38E000DB6A19 /* MGLPolyline_Private.h */; };
+		9654C12D1FFC394700DB6A19 /* MGLPolygon_Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 9654C12C1FFC394700DB6A19 /* MGLPolygon_Private.h */; };
 		96E027311E57C9A7004B8E66 /* Localizable.strings in Resources */ = {isa = PBXBuildFile; fileRef = 96E027331E57C9A7004B8E66 /* Localizable.strings */; };
 		DA00FC8A1D5EEAC3009AABC8 /* MGLAttributionInfo.h in Headers */ = {isa = PBXBuildFile; fileRef = DA00FC881D5EEAC3009AABC8 /* MGLAttributionInfo.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DA00FC8B1D5EEAC3009AABC8 /* MGLAttributionInfo.mm in Sources */ = {isa = PBXBuildFile; fileRef = DA00FC891D5EEAC3009AABC8 /* MGLAttributionInfo.mm */; };
@@ -303,8 +299,6 @@
 		1F7454A21ECFB00300021D39 /* MGLLight.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = MGLLight.mm; sourceTree = "<group>"; };
 		1F7454AA1ED1DDBD00021D39 /* MGLLightTest.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = MGLLightTest.mm; sourceTree = "<group>"; };
 		1F95931A1E6DE2B600D5B294 /* MGLNSDateAdditionsTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = MGLNSDateAdditionsTests.mm; path = ../../darwin/test/MGLNSDateAdditionsTests.mm; sourceTree = "<group>"; };
-		1FCDF1401F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLVectorSource+MGLAdditions.h"; sourceTree = "<group>"; };
-		1FCDF1411F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLVectorSource+MGLAdditions.m"; sourceTree = "<group>"; };
 		30E578141DAA7D920050F07E /* NSImage+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = "NSImage+MGLAdditions.h"; path = "src/NSImage+MGLAdditions.h"; sourceTree = SOURCE_ROOT; };
 		3508EC621D749D39009B0EE4 /* NSExpression+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSExpression+MGLAdditions.h"; sourceTree = "<group>"; };
 		3508EC631D749D39009B0EE4 /* NSExpression+MGLAdditions.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = "NSExpression+MGLAdditions.mm"; sourceTree = "<group>"; };
@@ -355,12 +349,8 @@
 		405C03961DB0004E001AC280 /* NSImage+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSImage+MGLAdditions.h"; sourceTree = "<group>"; };
 		405C03971DB0004E001AC280 /* NSImage+MGLAdditions.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = "NSImage+MGLAdditions.mm"; sourceTree = "<group>"; };
 		408AA85A1DAEECF100022900 /* MGLShape_Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLShape_Private.h; sourceTree = "<group>"; };
-		408AA85C1DAEED3300022900 /* MGLPolygon+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLPolygon+MGLAdditions.m"; sourceTree = "<group>"; };
-		408AA85D1DAEED3300022900 /* MGLPolyline+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "MGLPolyline+MGLAdditions.m"; sourceTree = "<group>"; };
 		408AA85E1DAEED3300022900 /* NSDictionary+MGLAdditions.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = "NSDictionary+MGLAdditions.mm"; sourceTree = "<group>"; };
 		408AA85F1DAEED3300022900 /* NSDictionary+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSDictionary+MGLAdditions.h"; sourceTree = "<group>"; };
-		408AA8601DAEED3300022900 /* MGLPolygon+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLPolygon+MGLAdditions.h"; sourceTree = "<group>"; };
-		408AA8611DAEED3300022900 /* MGLPolyline+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MGLPolyline+MGLAdditions.h"; sourceTree = "<group>"; };
 		40B77E421DB11BB0003DA2FE /* NSArray+MGLAdditions.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = "NSArray+MGLAdditions.mm"; sourceTree = "<group>"; };
 		40B77E431DB11BB0003DA2FE /* NSArray+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSArray+MGLAdditions.h"; sourceTree = "<group>"; };
 		40E1601A1DF216E6005EA6D9 /* MGLStyleLayerTests.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLStyleLayerTests.h; sourceTree = "<group>"; };
@@ -379,6 +369,8 @@
 		92092EEF1F5EB10E00AF5130 /* MGLMapSnapshotter.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = MGLMapSnapshotter.mm; sourceTree = "<group>"; };
 		920A3E581E6F859D00C16EFC /* MGLSourceQueryTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MGLSourceQueryTests.m; sourceTree = "<group>"; };
 		92F2C3EA1F0E3A1900268EC0 /* MGLRendererFrontend.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLRendererFrontend.h; sourceTree = "<group>"; };
+		9654C12A1FFC38E000DB6A19 /* MGLPolyline_Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLPolyline_Private.h; sourceTree = "<group>"; };
+		9654C12C1FFC394700DB6A19 /* MGLPolygon_Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLPolygon_Private.h; sourceTree = "<group>"; };
 		966091701E5BBFF700A9A03B /* es */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = es; path = es.lproj/Localizable.strings; sourceTree = "<group>"; };
 		966091711E5BBFF900A9A03B /* pl */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = pl; path = pl.lproj/Localizable.strings; sourceTree = "<group>"; };
 		966091721E5BBFFA00A9A03B /* uk */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = uk; path = uk.lproj/Localizable.strings; sourceTree = "<group>"; };
@@ -686,8 +678,6 @@
 		352742791D4C235C00A1ECE6 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				1FCDF1401F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h */,
-				1FCDF1411F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m */,
 				DA8F25A61D51CB270010E6B5 /* NSValue+MGLStyleAttributeAdditions.h */,
 				DA8F25A71D51CB270010E6B5 /* NSValue+MGLStyleAttributeAdditions.mm */,
 			);
@@ -951,8 +941,10 @@
 				DAF0D80D1DFE0E5D00B28378 /* MGLPointCollection_Private.h */,
 				4049C2A71DB6D09B00B3F799 /* MGLPointCollection.mm */,
 				DAE6C3541CC31E0400DB3429 /* MGLPolygon.h */,
+				9654C12C1FFC394700DB6A19 /* MGLPolygon_Private.h */,
 				DAE6C3771CC31E2A00DB3429 /* MGLPolygon.mm */,
 				DAE6C3551CC31E0400DB3429 /* MGLPolyline.h */,
+				9654C12A1FFC38E000DB6A19 /* MGLPolyline_Private.h */,
 				DAE6C3781CC31E2A00DB3429 /* MGLPolyline.mm */,
 				DAE6C3561CC31E0400DB3429 /* MGLShape.h */,
 				408AA85A1DAEECF100022900 /* MGLShape_Private.h */,
@@ -983,10 +975,6 @@
 		DAD1657F1CF4CF50001FF4B9 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				408AA8601DAEED3300022900 /* MGLPolygon+MGLAdditions.h */,
-				408AA85C1DAEED3300022900 /* MGLPolygon+MGLAdditions.m */,
-				408AA8611DAEED3300022900 /* MGLPolyline+MGLAdditions.h */,
-				408AA85D1DAEED3300022900 /* MGLPolyline+MGLAdditions.m */,
 				40B77E431DB11BB0003DA2FE /* NSArray+MGLAdditions.h */,
 				40B77E421DB11BB0003DA2FE /* NSArray+MGLAdditions.mm */,
 				DAE6C37D1CC31E2A00DB3429 /* NSBundle+MGLAdditions.h */,
@@ -1164,7 +1152,6 @@
 				DAE6C38D1CC31E2A00DB3429 /* MGLOfflineRegion_Private.h in Headers */,
 				DA7DC9831DED647F0027472F /* MGLRasterSource_Private.h in Headers */,
 				1753ED401E53CE6100A9FD90 /* MGLConversion.h in Headers */,
-				408AA8651DAEEE3400022900 /* MGLPolygon+MGLAdditions.h in Headers */,
 				DA8F259C1D51CB000010E6B5 /* MGLStyleValue_Private.h in Headers */,
 				DAE6C35B1CC31E0400DB3429 /* MGLAnnotation.h in Headers */,
 				DAE6C3B61CC31EF300DB3429 /* MGLMapView_Private.h in Headers */,
@@ -1223,12 +1210,10 @@
 				1F7454A31ECFB00300021D39 /* MGLLight_Private.h in Headers */,
 				359819591E02F611008FC139 /* NSCoder+MGLAdditions.h in Headers */,
 				DAE6C38E1CC31E2A00DB3429 /* MGLOfflineStorage_Private.h in Headers */,
-				408AA8661DAEEE3600022900 /* MGLPolyline+MGLAdditions.h in Headers */,
 				DA87A9A01DC9DC6200810D09 /* MGLValueEvaluator.h in Headers */,
 				DAE6C3601CC31E0400DB3429 /* MGLOfflineRegion.h in Headers */,
 				DAE6C3681CC31E0400DB3429 /* MGLTilePyramidOfflineRegion.h in Headers */,
 				DA35A2CF1CCAAED300E826B2 /* NSValue+MGLAdditions.h in Headers */,
-				1FCDF1421F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h in Headers */,
 				DAE6C3A61CC31E9400DB3429 /* MGLMapViewDelegate.h in Headers */,
 				DAE6C38B1CC31E2A00DB3429 /* MGLOfflinePack_Private.h in Headers */,
 				558DE7A61E56161C00C7916D /* MGLFoundation_Private.h in Headers */,
@@ -1252,8 +1237,10 @@
 				DAE6C3A51CC31E9400DB3429 /* MGLMapView+IBAdditions.h in Headers */,
 				DA35A2AD1CCA091800E826B2 /* MGLCompassDirectionFormatter.h in Headers */,
 				352742851D4C244700A1ECE6 /* MGLRasterSource.h in Headers */,
+				9654C12D1FFC394700DB6A19 /* MGLPolygon_Private.h in Headers */,
 				408AA85B1DAEECFE00022900 /* MGLShape_Private.h in Headers */,
 				DACC22181CF3D4F700D220D9 /* MGLFeature_Private.h in Headers */,
+				9654C12B1FFC38E000DB6A19 /* MGLPolyline_Private.h in Headers */,
 				DA6408D71DA4E5DA00908C90 /* MGLVectorStyleLayer.h in Headers */,
 				352742891D4C245800A1ECE6 /* MGLShapeSource.h in Headers */,
 				1F7454A41ECFB00300021D39 /* MGLLight.h in Headers */,
@@ -1474,7 +1461,6 @@
 				40B77E461DB11BCD003DA2FE /* NSArray+MGLAdditions.mm in Sources */,
 				DAE6C38C1CC31E2A00DB3429 /* MGLOfflinePack.mm in Sources */,
 				35D65C5B1D65AD5500722C23 /* NSDate+MGLAdditions.mm in Sources */,
-				1FCDF1431F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m in Sources */,
 				DD0902B21DB1AC6400C5BDCE /* MGLNetworkConfiguration.m in Sources */,
 				1F7454A51ECFB00300021D39 /* MGLLight.mm in Sources */,
 				DAE6C3B11CC31EF300DB3429 /* MGLAnnotationImage.m in Sources */,
@@ -1518,7 +1504,6 @@
 				DAE6C38F1CC31E2A00DB3429 /* MGLOfflineStorage.mm in Sources */,
 				DAED38601D62CED700D7640F /* NSURL+MGLAdditions.m in Sources */,
 				35C5D84A1D6DD66D00E95907 /* NSCompoundPredicate+MGLAdditions.mm in Sources */,
-				408AA8681DAEEE5200022900 /* MGLPolygon+MGLAdditions.m in Sources */,
 				DAE6C3951CC31E2A00DB3429 /* MGLTilePyramidOfflineRegion.mm in Sources */,
 				DAE6C3851CC31E2A00DB3429 /* MGLAccountManager.m in Sources */,
 				DA00FC8B1D5EEAC3009AABC8 /* MGLAttributionInfo.mm in Sources */,
@@ -1530,7 +1515,6 @@
 				35C5D8481D6DD66D00E95907 /* NSComparisonPredicate+MGLAdditions.mm in Sources */,
 				DA35A2AE1CCA091800E826B2 /* MGLCompassDirectionFormatter.m in Sources */,
 				DA8F258C1D51CA540010E6B5 /* MGLLineStyleLayer.mm in Sources */,
-				408AA8691DAEEE5500022900 /* MGLPolyline+MGLAdditions.m in Sources */,
 				DA8F25941D51CA750010E6B5 /* MGLSymbolStyleLayer.mm in Sources */,
 				3529039C1D6C63B80002C7DF /* NSPredicate+MGLAdditions.mm in Sources */,
 				DA8F25981D51CAC70010E6B5 /* MGLVectorSource.mm in Sources */,