1 // Copyright 2016 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 #ifndef MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_WTF_H_ 6 #define MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_WTF_H_ 7 8 #include "base/logging.h" 9 #include "mojo/public/cpp/bindings/map_traits.h" 10 #include "mojo/public/cpp/bindings/wtf_map.h" 11 12 namespace mojo { 13 14 template <typename K, typename V> 15 struct MapTraits<WTFMap<K, V>> { 16 using Key = K; 17 using Value = V; 18 using Iterator = typename WTFMap<K, V>::Iterator; 19 using ConstIterator = typename WTFMap<K, V>::ConstIterator; 20 21 static bool IsNull(const WTFMap<K, V>& input) { return input.is_null(); } 22 static void SetToNull(WTFMap<K, V>* output) { *output = nullptr; } 23 24 static size_t GetSize(const WTFMap<K, V>& input) { return input.size(); } 25 26 static ConstIterator GetBegin(const WTFMap<K, V>& input) { 27 return input.begin(); 28 } 29 static Iterator GetBegin(WTFMap<K, V>& input) { return input.begin(); } 30 31 static void AdvanceIterator(ConstIterator& iterator) { ++iterator; } 32 static void AdvanceIterator(Iterator& iterator) { ++iterator; } 33 34 static const K& GetKey(Iterator& iterator) { return iterator->key; } 35 static const K& GetKey(ConstIterator& iterator) { return iterator->key; } 36 37 static V& GetValue(Iterator& iterator) { return iterator->value; } 38 static const V& GetValue(ConstIterator& iterator) { return iterator->value; } 39 40 static bool Insert(WTFMap<K, V>& input, const K& key, V&& value) { 41 if (!WTFMap<K, V>::IsValidKey(key)) { 42 LOG(ERROR) << "The key value is disallowed by WTF::HashMap: " << key; 43 return false; 44 } 45 input.insert(key, std::forward<V>(value)); 46 return true; 47 } 48 static bool Insert(WTFMap<K, V>& input, const K& key, const V& value) { 49 if (!WTFMap<K, V>::IsValidKey(key)) { 50 LOG(ERROR) << "The key value is disallowed by WTF::HashMap: " << key; 51 return false; 52 } 53 input.insert(key, value); 54 return true; 55 } 56 57 static void SetToEmpty(WTFMap<K, V>* output) { output->SetToEmpty(); } 58 }; 59 60 } // namespace mojo 61 62 #endif // MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_WTF_H_ 63