pkg/front_end/testcases/inference/generic_methods_downwards_inference_fold.dart

// Copyright (c) 2017, 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.

/*@testedFeatures=inference*/
library test;

void test() {
  List<int> o;
  int y = o. /*@ typeArgs=int* */ /*@target=Iterable.fold*/ fold(
      0,
      /*@ returnType=int* */ (/*@ type=int* */ x,
              /*@ type=int* */ y) =>
          x /*@target=num.+*/ + y);
  var /*@ type=dynamic */ z =
      o. /*@ typeArgs=dynamic */ /*@target=Iterable.fold*/ fold(
          0,
          /*@ returnType=dynamic */ (/*@ type=dynamic */ x,
              /*@ type=int* */ y) => /*info:DYNAMIC_INVOKE*/ x + y);
  y = /*info:DYNAMIC_CAST*/ z;
}

void functionExpressionInvocation() {
  List<int> o;
  int y = (o. /*@target=Iterable.fold*/ fold) /*@ typeArgs=int* */ (
      0,
      /*@ returnType=int* */ (/*@ type=int* */ x,
              /*@ type=int* */ y) =>
          x /*@target=num.+*/ + y);
  var /*@ type=dynamic */ z =
      (o. /*@target=Iterable.fold*/ fold) /*@ typeArgs=dynamic */ (
          0,
          /*@ returnType=dynamic */ (/*@ type=dynamic */ x,
              /*@ type=int* */ y) => /*info:DYNAMIC_INVOKE*/ x + y);
  y = /*info:DYNAMIC_CAST*/ z;
}

main() {}