Language/12_Expressions/18_Assignment_A08_t04.dart

/*
 * 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 Evaluation of an assignment of the form e1[e2] = e3 is equivalent to the
 * evaluation of the expression (a, i, e){a.[]=(i, e); return e;} (e1, e2, e3).
 * The static type of the expression e1 [e2 ] = e3 is the static type of e3.
 * @description Checks that the correct value of an assignment expression of the form e1[e2] = e3
 * is still returned even if no []= operator was found in the type of e1, as long as noSuchMethod()
 * is overridden and no exception is thrown.
 * @static-warning
 * @author rodionov
 * @reviewer iefremov
 */
import "../../Utils/expect.dart";

class C {
  operator[](idx) {}

  noSuchMethod(Invocation im) {
    Expect.equals(const Symbol("[]="), im.memberName,
           "Incorrect method was searched: ${im.memberName}");
  }
}

main() {
  C c = new C();
  Expect.equals(1, c[1] = 1); /// static type warning - invoking an unknown instance member, see "Ordinary invocation"
  Expect.equals(2, c[false] = 2); /// static type warning - invoking an unknown instance member, see "Ordinary invocation"
  Expect.equals("12", c["foo"] = "1" "2"); /// static type warning - invoking an unknown instance member, see "Ordinary invocation"
  Expect.equals(true, c[-1.11] = 1 < 2); /// static type warning - invoking an unknown instance member, see "Ordinary invocation"
}