/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// A wrapper that uses RAII to ensure that a class invariant is checked // before and after any public function is called
// // Wraps an object of type T and allows access to its public API by // deferencing it using the pointer syntax "->". // // Using that operator will return a temporary RAII object that // calls a method named "CheckInvariant" in its constructor, calls the // requested method, and then calls "CheckInvariant" again in its // destructor. // // The only thing your class requires is a method with the following signature: // // void CheckInvariant() const; // template <typename T> class CheckInvariantWrapper { public: class Wrapper { public: explicit Wrapper(T& aObject) : mObject(aObject) {
mObject.CheckInvariant();
}
~Wrapper() { mObject.CheckInvariant(); }
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