[iOS] Convert to immutable instance. Make code stronger. (#2772)

apache · Aug 1, 2019 · dc63c56 · dc63c56
1 parent 10ddece
commit dc63c56
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/ios/sdk/WeexSDK/Sources/Utility/WXUtility.m b/ios/sdk/WeexSDK/Sources/Utility/WXUtility.m
@@ -270,14 +270,16 @@ + (id _Nullable)convertContainerToImmutable:(id _Nullable)source
         for (id obj in source) {
             [tmpArray addObject:[self convertContainerToImmutable:obj]];
         }
-        return [NSArray arrayWithArray:tmpArray];
+        id immutableArray = [NSArray arrayWithArray:tmpArray];
+        return immutableArray ? immutableArray : tmpArray;
     }
     else if ([source isKindOfClass:[NSDictionary class]]) {
         NSMutableDictionary* tmpDictionary = [[NSMutableDictionary alloc] init];
         for (id key in [source keyEnumerator]) {
             tmpDictionary[key] = [self convertContainerToImmutable:[source objectForKey:key]];
         }
-        return [NSDictionary dictionaryWithDictionary:tmpDictionary];
+        id immutableDict = [NSDictionary dictionaryWithDictionary:tmpDictionary];
+        return immutableDict ? immutableDict : tmpDictionary;
     }
 
     return source;