pkg/front_end/testcases/inference/infer_from_complex_expressions_if_outer_most_value_is_precise.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.
// @dart=2.9
/*@testedFeatures=inference*/
library test;

class A {
  int x;
  B operator +(other) => null;
}

class B extends A {
  B(ignore);
}

var a = new A();
// Note: it doesn't matter that some of these refer to 'x'.
var b = new B(/*error:UNDEFINED_IDENTIFIER*/ x); // allocations
var c1 = /*@typeArgs=dynamic*/ [
  /*error:UNDEFINED_IDENTIFIER*/ x
]; // list literals
var c2 = /*@typeArgs=dynamic*/ const [];
var d = <dynamic, dynamic>{'a': 'b'}; // map literals
var e = new A().. /*@target=A.x*/ x = 3; // cascades
var f =
    2 /*@target=num.+*/ + 3; // binary expressions are OK if the left operand
// is from a library in a different strongest
// connected component.
var g = /*@target=int.unary-*/ -3;
var h = new A() /*@target=A.+*/ + 3;
var i = /*error:UNDEFINED_OPERATOR,info:DYNAMIC_INVOKE*/ -new A();
var j = /*info:UNNECESSARY_CAST*/ null as B;

test1() {
  a = /*error:INVALID_ASSIGNMENT*/ "hi";
  a = new B(3);
  b = /*error:INVALID_ASSIGNMENT*/ "hi";
  b = new B(3);
  c1 = /*@typeArgs=dynamic*/ [];
  c1 = /*error:INVALID_ASSIGNMENT*/ /*@typeArgs=dynamic*/ {};
  c2 = /*@typeArgs=dynamic*/ [];
  c2 = /*error:INVALID_ASSIGNMENT*/ /*@typeArgs=dynamic*/ {};
  d = /*@typeArgs=dynamic, dynamic*/ {};
  d = /*error:INVALID_ASSIGNMENT*/ 3;
  e = new A();
  e = /*error:INVALID_ASSIGNMENT*/ /*@typeArgs=dynamic, dynamic*/ {};
  f = 3;
  f = /*error:INVALID_ASSIGNMENT*/ false;
  g = 1;
  g = /*error:INVALID_ASSIGNMENT*/ false;
  h = /*error:INVALID_ASSIGNMENT*/ false;
  h = new B('b');
  i = false;
  j = new B('b');
  j = /*error:INVALID_ASSIGNMENT*/ false;
  j = /*error:INVALID_ASSIGNMENT*/ /*@typeArgs=dynamic*/ [];
}

main() {}