[ios, macos] fixes #7059: raise exception for abstract sources on add (#7060)

2016-11-14 16:02:16 -08:00
parent 07b311d490
commit eefda0d381
1 changed files with 7 additions and 0 deletions
--- a/platform/darwin/src/MGLStyle.mm
+++ b/platform/darwin/src/MGLStyle.mm
@@ -204,6 +204,13 @@ static NSURL *MGLStyleURL_emerald;

 - (void)addSource:(MGLSource *)source
 {
+    if (!source.rawSource) {
+        [NSException raise:NSInvalidArgumentException format:
+         @"The source %@ cannot be added to the style. "
+         @"Make sure the source was created as a member of a concrete subclass of MGLSource.",
+         source];
+    }
+
    [source addToMapView:self.mapView];
 }