Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/lib/iterator_util.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_ITERATOR_UTIL_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_ITERATOR_UTIL_H_
-
-#include <algorithm>
-
-#include "mojo/public/cpp/bindings/array.h"
-#include "mojo/public/cpp/bindings/map.h"
-#include "mojo/public/cpp/environment/logging.h"
-
-namespace mojo {
-namespace internal {
-
-// |MapKeyIterator| and |MapValueIterator| are templated interfaces for
-// iterating over a Map<>'s keys and its values, respectively.  They provide a
-// begin() and end() for generating an STL-iterator.  The generated Iterator
-// follows the BidirectionalIterator concept
-// (http://en.cppreference.com/w/cpp/concept/BidirectionalIterator).
-//
-// Example usage:
-//
-//  Map<int,int> my_map;
-//  my_map[1] = 2;
-//  my_map[3] = 4;
-//  my_map[5] = 6;
-//  for (int key : MapKeyIterator<int,int>(&my_map)) {
-//    std::cout << key << std::endl;
-//  }
-//  for (int val : MapValueIterator<int,int>(&my_map)) {
-//    std::cout << val << std::endl;
-//  }
-
-// Interface for iterating over a Map<K, V>'s keys.
-// To construct a |MapKeyIterator|, pass in a non-null pointer to a Map<K, V>;
-template <typename K, typename V>
-class MapKeyIterator {
- public:
-  class Iterator {
-   public:
-    Iterator() : it_() {}
-    explicit Iterator(typename Map<K, V>::MapIterator it) : it_(it) {}
-    Iterator& operator++() {
-      ++it_;
-      return *this;
-    }
-    Iterator operator++(int) {
-      Iterator original = *this;
-      ++it_;
-      return original;
-    }
-    Iterator& operator--() {
-      --it_;
-      return *this;
-    }
-    Iterator operator--(int) {
-      Iterator original = *this;
-      --it_;
-      return original;
-    }
-    bool operator==(const Iterator& o) const { return o.it_ == it_; }
-    bool operator!=(const Iterator& o) const { return o.it_ != it_; }
-    const K& operator*() { return it_.GetKey(); }
-    const K* operator->() { return &it_.GetKey(); }
-
-   private:
-    typename Map<K, V>::MapIterator it_;
-  };
-
-  explicit MapKeyIterator(Map<K, V>* map) : map_(map) { MOJO_DCHECK(map); }
-
-  size_t size() const { return map_->size(); }
-  Iterator begin() const { return Iterator{map_->begin()}; }
-  Iterator end() const { return Iterator{map_->end()}; }
-
- private:
-  Map<K, V>* const map_;
-};
-
-// Interface for iterating over a Map<K, V>'s values.
-template <typename K, typename V>
-class MapValueIterator {
- public:
-  class Iterator {
-   public:
-    Iterator() : it_(typename Map<K, V>::MapIterator()) {}
-    explicit Iterator(typename Map<K, V>::MapIterator it) : it_(it) {}
-    Iterator& operator++() {
-      ++it_;
-      return *this;
-    }
-    Iterator operator++(int) {
-      Iterator original = *this;
-      ++it_;
-      return original;
-    }
-    Iterator& operator--() {
-      --it_;
-      return *this;
-    }
-    Iterator operator--(int) {
-      Iterator original = *this;
-      --it_;
-      return original;
-    }
-    bool operator==(const Iterator& o) const { return o.it_ == it_; }
-    bool operator!=(const Iterator& o) const { return o.it_ != it_; }
-    V& operator*() { return it_.GetValue(); }
-    V* operator->() { return &it_.GetValue(); }
-
-   private:
-    typename Map<K, V>::MapIterator it_;
-  };
-
-  explicit MapValueIterator(Map<K, V>* map) : map_(map) { MOJO_DCHECK(map); }
-  size_t size() const { return map_->size(); }
-  Iterator begin() const { return Iterator{map_->begin()}; }
-  Iterator end() const { return Iterator{map_->end()}; }
-
- private:
-  Map<K, V>* const map_;
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_ITERATOR_UTIL_H_