Language/Expressions/Method_Invocation/Super_Invocation/evaluation_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 i proceeds as follows:
/// First, the argument list (a1, ..., an, xn+1 : an+1, ..., xn+k : an+k) is
/// evaluated yielding actual argument objects o1, ..., on+k. Let g be the
/// method currently executing, and let C be the class in which g was looked
/// up. Let Sdynamic be the superclass of C, and let f be the result of
/// looking up method m in Sdynamic with respect to the current library L.Let
/// p1 ... ph be the required parameters of f, let p1 ... pm be the positional
/// parameters of f and let ph+1, ..., ph+l be the optional parameters
/// declared by f.
/// If n < h, or n > m, the method lookup has failed. Furthermore, each
/// xi, n+1 ≤ i ≤ n+k, must have a corresponding named parameter in the set
/// {pm+1, ..., ph+l} or the method lookup also fails. Otherwise method lookup
/// has succeeded.
/// If the method lookup succeeded, the body of f is executed with respect to
/// the bindings that resulted from the evaluation of the argument list, and
/// with this bound to the current value of this. The value of i is the value
/// returned after f is executed.
/// @description Checks that the argument list is evaluated before the method
/// lookup.
/// @author msyabro

import '../../../../Utils/expect.dart';

StringBuffer buffer = new StringBuffer();

class S {
  var f;
}

class A extends S {
  operator +(otherOperand) {
    buffer.write(1);
  }

  operator -(otherOperand) {
    buffer.write(2);
  }

  test() {
    try {
      super.f(new A() + 1, new A() - 1);
      Expect.fail("NoSuchMethodError expected.");
    } on NoSuchMethodError catch (e) {
      Expect.equals("12", buffer.toString());
    }
  }
}

main()  {
  new A().test();
}