[JS IR BE] Support cast to native interface

2019-02-12 21:29:47 +03:00
parent 4a3476a87c
commit 74c8f54fc8
3 changed files with 7 additions and 3 deletions
@@ -218,7 +218,13 @@ class TypeOperatorLowering(val context: JsIrBackendContext) : FileLoweringPass {
                    toType.isArray() -> generateGenericArrayCheck(argument)
                    toType.isPrimitiveArray() -> generatePrimitiveArrayTypeCheck(argument, toType)
                    toType.isTypeParameter() -> generateTypeCheckWithTypeParameter(argument, toType)
-                    toType.isInterface() -> generateInterfaceCheck(argument, toType)
+                    toType.isInterface() -> {
+                        if ((toType.classifierOrFail.owner as IrClass).isEffectivelyExternal()) {
+                            generateIsObjectCheck(argument)
+                        } else {
+                            generateInterfaceCheck(argument, toType)
+                        }
+                    }
                    else -> generateNativeInstanceOf(argument, toType)
                }
            }