/*
 * Copyright (c) 2011, 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.
 */
/**
 * @assertion The function type (T1, ... Tn, {Tx1 x1, ..., Txk xk}) -> T is a
 * subtype of the function type (S1, ..., Sn, {Sy1 y1, ..., Sym ym }) -> S, if
 * all of the following conditions are met:
 * 1. Either
 *    • S is void, Or
 *    • T ⇐⇒ S.
 * 2. ∀i ∈ 1..n, Ti ⇐⇒ Si .
 * 3. k ≥ m and yi ∈ {x1 , ..., xk }, i ∈ 1..m.
 * 4. For all yi ∈ {y1 , ..., ym }, yi = xj ⇒ Tj ⇐⇒ Si.
 * @description Checks that this statement is true for functions with several
 * named optional parameters (class, generic, function, Dynamic).
 * @author rodionov
 */
import "../../../Utils/expect.dart";

class A {}
class A1 {}
class A2 {}
class B implements A, A1, A2 {}
class C implements B {}
class D implements C {}

class G<T, S, U, W> {}

typedef classesFunc({A? a, B? b, C? c, D? d});
typedef genericsFunc({Map<num, int>? m, List<List<B>>? l, G<A, B, C, D>? g});
typedef dynamicFunc({var x, var y, var z, var v});
typedef funcFunc({classesFunc? f1, genericsFunc? f2, dynamicFunc? f3});
typedef mixFunc({var x, B? b, G<A, B, C, D>? g, funcFunc? f});

typedef okWithClassesFunc_1({A? a, A1? b, A1? c, A1? d});
typedef okWithClassesFunc_2({D? a, D? b, D? c, D? d});

typedef okWithGenericsFunc_1({Map<num, num>? m, List<List<A1>>? l, G<A, A1, A1, A1>? g});
typedef okWithGenericsFunc_2({Map<int, int>? m, List<List<D>>? l, G<D, D, D, D>? g});

typedef okWithDynamicFunc_1({A? x, G? y, mixFunc z, var v});
typedef okWithDynamicFunc_2({int? x, bool y, List<Map>? z, classesFunc? v});


main() {
  Expect.isFalse(({D? a, B? b, C? c, A? d}) {} is classesFunc);
  Expect.isTrue(({A? a, A? b, A? c, A? d}) {} is classesFunc);
  Expect.isFalse(({D? a, A1? b, A1? c, A1? d}) {} is classesFunc);
  Expect.isFalse(({D? a, A2? b, A2? c, A2? d}) {} is classesFunc);
  Expect.isFalse(({D? a, D? b, D? c, D? d}) {} is classesFunc);
  Expect.isTrue(({var a, var b, var c, var d}) {} is classesFunc);
  Expect.isTrue(({Object? a, Object? b, Object? c, Object? d}) {} is classesFunc);

  Expect.isTrue(({Map<num, num>? m, List<List<A1>>? l, G<A, A1, A1, A1>? g}) {} is genericsFunc);
  Expect.isFalse(({Map<int, int>? m, List<List<D>>? l, G<D, D, D, D>? g}) {} is genericsFunc);
  Expect.isTrue(({var m, var l, var g}) {} is genericsFunc);
  Expect.isTrue(({Object? m, Object? l, Object? g}) {} is genericsFunc);

  Expect.isFalse(({A? x, G? y, mixFunc? z, var v}) {} is dynamicFunc);
  Expect.isFalse(({int? x, bool? y, List<Map>? z, classesFunc? v}) {} is dynamicFunc);

  Expect.isFalse(({okWithClassesFunc_1? f1, okWithGenericsFunc_1? f2, okWithDynamicFunc_1? f3}) {} is funcFunc);
  Expect.isTrue(({okWithClassesFunc_2? f1, okWithGenericsFunc_2? f2, okWithDynamicFunc_2? f3}) {} is funcFunc);
}