base/callback_helpers.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/callback_helpers.h"
   6
   7 namespace base {
   8
   9 ScopedClosureRunner::ScopedClosureRunner() = default;
  10
  11 ScopedClosureRunner::ScopedClosureRunner(OnceClosure closure)
  12     : closure_(std::move(closure)) {}
  13
  14 ScopedClosureRunner::ScopedClosureRunner(ScopedClosureRunner&& other)
  15     : closure_(other.Release()) {}
  16
  17 ScopedClosureRunner& ScopedClosureRunner::operator=(
  18     ScopedClosureRunner&& other) {
  19   if (this != &other) {
  20     RunAndReset();
  21     ReplaceClosure(other.Release());
  22   }
  23   return *this;
  24 }
  25
  26 ScopedClosureRunner::~ScopedClosureRunner() {
  27   RunAndReset();
  28 }
  29
  30 void ScopedClosureRunner::RunAndReset() {
  31   if (closure_)
  32     std::move(closure_).Run();
  33 }
  34
  35 void ScopedClosureRunner::ReplaceClosure(OnceClosure closure) {
  36   closure_ = std::move(closure);
  37 }
  38
  39 OnceClosure ScopedClosureRunner::Release() {
  40   return std::move(closure_);
  41 }
  42
  43 }  // namespace base