1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a "No Compile Test" suite.
// http://dev.chromium.org/developers/testing/no-compile-tests
#include "base/callback_list.h"
#include <memory>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
namespace base {
class Foo {
public:
Foo() {}
~Foo() {}
};
class FooListener {
public:
FooListener() = default;
FooListener(const FooListener&) = delete;
FooListener& operator=(const FooListener&) = delete;
void GotAScopedFoo(std::unique_ptr<Foo> f) { foo_ = std::move(f); }
std::unique_ptr<Foo> foo_;
};
// Callbacks run with a move-only typed parameter.
//
// CallbackList does not support move-only typed parameters. Notify() is
// designed to take zero or more parameters, and run each registered callback
// with them. With move-only types, the parameter will be set to NULL after the
// first callback has been run.
void WontCompile() {
FooListener f;
RepeatingCallbackList<void(std::unique_ptr<Foo>)> c1;
CallbackListSubscription sub =
c1.Add(BindRepeating(&FooListener::GotAScopedFoo, Unretained(&f)));
c1.Notify(std::unique_ptr<Foo>(new Foo())); // expected-error@*:* {{call to implicitly-deleted copy constructor of 'std::unique_ptr<base::Foo>'}}
}
} // namespace base
|
