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1 // Copyright (c) 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 <iterator>
6 #include <map>
7 #include <string>
8 
9 #include "scoped_refptr.h"
10 
11 struct Foo {
12   int dummy;
13 };
14 
15 typedef std::map<std::string, scoped_refptr<const Foo>> MyMap;
16 
17 class MyIter
18     : public std::iterator<std::input_iterator_tag, scoped_refptr<const Foo>> {
19  public:
MyIter()20   MyIter() {}
MyIter(const MyIter & other)21   MyIter(const MyIter& other) : it_(other.it_) {}
MyIter(MyMap::const_iterator it)22   explicit MyIter(MyMap::const_iterator it) : it_(it) {}
operator ++()23   MyIter& operator++() {
24     ++it_;
25     return *this;
26   }
operator *()27   const scoped_refptr<const Foo> operator*() { return it_->second; }
operator !=(const MyIter & other)28   bool operator!=(const MyIter& other) { return it_ != other.it_; }
operator ==(const MyIter & other)29   bool operator==(const MyIter& other) { return it_ == other.it_; }
30 
31  private:
32   MyMap::const_iterator it_;
33 };
34 
TestsAScopedRefptr()35 void TestsAScopedRefptr() {
36   MyMap map;
37   map["foo"] = new Foo;
38   map["bar"] = new Foo;
39   MyIter my_begin(map.begin());
40   MyIter my_end(map.end());
41   for (MyIter it = my_begin; it != my_end; ++it) {
42     const Foo* item = NULL;
43     if (it->get())
44       item = it->get();
45   }
46 }
47