Language/Expressions/Function_Invocation/Unqualified_Invocation/method_invocation_t01.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 An unqualified function invocation i has the form
/// id(a1, ..., an, xn+1: an+1, ..., xn+k: an+k), where id is an identifier.
/// If there exists a lexically visible declaration named id, let fid be the
/// innermost such declaration. Then:
/// . . .
///  • If fid is a local function, a library function, a library or static getter
///    or a variable then i is interpreted as a function expression invocation.
/// . . .
///  • Otherwise, fid is necessarily an instance method or getter of the
///    enclosing class C, and i is equivalent to the ordinary method invocation
///    this.id(a1, ..., an, xn+1: an+1, ..., xn+k: an+k).
/// . . .
/// @description Checks that an unqualified invocation is resolved correctly and
/// the innermost matching declaration is used.
/// @author msyabro

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

m() {
  return "library function";
}

class A {
  m() {
    return "instance method";
  }

  test() {
    var m = () => "local function";
    Expect.equals("local function", m());
  }
}

class B {
  m() {
    return "instance method too";
  }

  test() {
    Expect.equals("instance method too", m());
  }
}

class D {
  test() {
    Expect.equals("library function", m());
  }
}

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