Kotlin: Remove some casts in useSimpleType

Author: igfoo

java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt

@@ -637,15 +637,23 @@ open class KotlinUsesExtractor(
             return TypeResults(javaResult, kotlinResult)
         }
 
+        val owner = s.classifier.owner
         val primitiveInfo = primitiveTypeMapping.getPrimitiveInfo(s)
 
         when {
-            primitiveInfo != null -> return primitiveType(
-                s.classifier.owner as IrClass,
-                primitiveInfo.primitiveName, primitiveInfo.otherIsPrimitive,
-                primitiveInfo.javaClass,
-                primitiveInfo.kotlinPackageName, primitiveInfo.kotlinClassName
-            )
+            primitiveInfo != null -> {
+                if (owner is IrClass) {
+                    return primitiveType(
+                        owner,
+                        primitiveInfo.primitiveName, primitiveInfo.otherIsPrimitive,
+                        primitiveInfo.javaClass,
+                        primitiveInfo.kotlinPackageName, primitiveInfo.kotlinClassName
+                    )
+                } else {
+                    logger.error("Got primitive info for non-class (${owner.javaClass}) for ${s.render()}")
+                    return extractErrorType()
+                }
+            }
 
             (s.isBoxedArray && s.arguments.isNotEmpty()) || s.isPrimitiveArray() -> {
 
@@ -689,15 +697,13 @@ open class KotlinUsesExtractor(
                 )
             }
 
-            s.classifier.owner is IrClass -> {
-                val classifier: IrClassifierSymbol = s.classifier
-                val cls: IrClass = classifier.owner as IrClass
+            owner is IrClass -> {
                 val args = if (s.isRawType()) null else s.arguments
 
-                return useSimpleTypeClass(cls, args, s.hasQuestionMark)
+                return useSimpleTypeClass(owner, args, s.hasQuestionMark)
             }
-            s.classifier.owner is IrTypeParameter -> {
-                val javaResult = useTypeParameter(s.classifier.owner as IrTypeParameter)
+            owner is IrTypeParameter -> {
+                val javaResult = useTypeParameter(owner as IrTypeParameter)
                 val aClassId = makeClass("kotlin", "TypeParam") // TODO: Wrong
                 val kotlinResult = if (true) TypeResult(fakeKotlinType(), "TODO", "TODO") else
                     if (s.hasQuestionMark) {