blob: b07f509a5b3580a0828a70346c72d095b330fc5f [file] [log] [blame]
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.9
library test.generics_substitution;
import 'dart:mirrors';
import 'package:expect/expect.dart';
class SuperGeneric<R, S> {
R r;
s(S s) {}
}
class Generic<T> extends SuperGeneric<T, int> {
T t() => throw "does-not-return"; //
}
main() {
ClassMirror genericDecl = reflectClass(Generic);
ClassMirror genericOfString = reflect(new Generic<String>()).type;
ClassMirror superGenericDecl = reflectClass(SuperGeneric);
ClassMirror superOfTAndInt = genericDecl.superclass;
ClassMirror superOfStringAndInt = genericOfString.superclass;
Expect.isTrue(genericDecl.isOriginalDeclaration);
Expect.isFalse(genericOfString.isOriginalDeclaration);
Expect.isTrue(superGenericDecl.isOriginalDeclaration);
Expect.isFalse(superOfTAndInt.isOriginalDeclaration);
Expect.isFalse(superOfStringAndInt.isOriginalDeclaration);
Symbol r(ClassMirror cm) =>
(cm.declarations[#r] as VariableMirror).type.simpleName;
Symbol s(ClassMirror cm) =>
(cm.declarations[#s] as MethodMirror).parameters[0].type.simpleName;
Symbol t(ClassMirror cm) =>
(cm.declarations[#t] as MethodMirror).returnType.simpleName;
// Names of type variables are not preserved after type canonicalization
// and are therefore not compared to expected names.
Expect.equals(#int, s(genericDecl.superclass));
Expect.equals(#String, r(genericOfString.superclass));
Expect.equals(#int, s(genericOfString.superclass));
Expect.equals(#String, t(genericOfString));
Expect.equals(#int, s(superOfTAndInt));
Expect.equals(#String, r(superOfStringAndInt));
Expect.equals(#int, s(superOfStringAndInt));
}