1645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez// Copyright 2016 The Chromium Authors. All rights reserved. 2645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez// Use of this source code is governed by a BSD-style license that can be 3645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez// found in the LICENSE file. 4645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 5645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#ifndef MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_STL_H_ 6645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#define MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_STL_H_ 7645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 8645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#include <map> 9645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#include <unordered_map> 10645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 11645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#include "mojo/public/cpp/bindings/map_traits.h" 12645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 13645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chaveznamespace mojo { 14645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 15645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chaveztemplate <typename K, typename V> 16645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavezstruct MapTraits<std::map<K, V>> { 17645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Key = K; 18645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Value = V; 19645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Iterator = typename std::map<K, V>::iterator; 20645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using ConstIterator = typename std::map<K, V>::const_iterator; 21645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 22645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool IsNull(const std::map<K, V>& input) { 23645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez // std::map<> is always converted to non-null mojom map. 24645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return false; 25645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 26645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 27645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void SetToNull(std::map<K, V>* output) { 28645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez // std::map<> doesn't support null state. Set it to empty instead. 29645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez output->clear(); 30645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 31645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 32645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static size_t GetSize(const std::map<K, V>& input) { return input.size(); } 33645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 34645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static ConstIterator GetBegin(const std::map<K, V>& input) { 35645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return input.begin(); 36645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 37645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static Iterator GetBegin(std::map<K, V>& input) { return input.begin(); } 38645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 39645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void AdvanceIterator(ConstIterator& iterator) { iterator++; } 40645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void AdvanceIterator(Iterator& iterator) { iterator++; } 41645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 42645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const K& GetKey(Iterator& iterator) { return iterator->first; } 43645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const K& GetKey(ConstIterator& iterator) { return iterator->first; } 44645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 45645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static V& GetValue(Iterator& iterator) { return iterator->second; } 46645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const V& GetValue(ConstIterator& iterator) { return iterator->second; } 47645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 48645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool Insert(std::map<K, V>& input, const K& key, V&& value) { 49645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez input.insert(std::make_pair(key, std::forward<V>(value))); 50645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return true; 51645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 52645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool Insert(std::map<K, V>& input, const K& key, const V& value) { 53645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez input.insert(std::make_pair(key, value)); 54645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return true; 55645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 56645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 57645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void SetToEmpty(std::map<K, V>* output) { output->clear(); } 58645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez}; 59645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 60645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chaveztemplate <typename K, typename V> 61645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavezstruct MapTraits<std::unordered_map<K, V>> { 62645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Key = K; 63645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Value = V; 64645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using Iterator = typename std::unordered_map<K, V>::iterator; 65645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez using ConstIterator = typename std::unordered_map<K, V>::const_iterator; 66645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 67645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool IsNull(const std::unordered_map<K, V>& input) { 68645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez // std::unordered_map<> is always converted to non-null mojom map. 69645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return false; 70645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 71645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 72645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void SetToNull(std::unordered_map<K, V>* output) { 73645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez // std::unordered_map<> doesn't support null state. Set it to empty instead. 74645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez output->clear(); 75645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 76645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 77645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static size_t GetSize(const std::unordered_map<K, V>& input) { 78645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return input.size(); 79645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 80645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 81645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static ConstIterator GetBegin(const std::unordered_map<K, V>& input) { 82645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return input.begin(); 83645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 84645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static Iterator GetBegin(std::unordered_map<K, V>& input) { 85645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return input.begin(); 86645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 87645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 88645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void AdvanceIterator(ConstIterator& iterator) { iterator++; } 89645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void AdvanceIterator(Iterator& iterator) { iterator++; } 90645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 91645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const K& GetKey(Iterator& iterator) { return iterator->first; } 92645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const K& GetKey(ConstIterator& iterator) { return iterator->first; } 93645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 94645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static V& GetValue(Iterator& iterator) { return iterator->second; } 95645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static const V& GetValue(ConstIterator& iterator) { return iterator->second; } 96645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 97645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool Insert(std::unordered_map<K, V>& input, const K& key, V&& value) { 98645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez input.insert(std::make_pair(key, std::forward<V>(value))); 99645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return true; 100645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 101645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static bool Insert(std::unordered_map<K, V>& input, 102645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez const K& key, 103645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez const V& value) { 104645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez input.insert(std::make_pair(key, value)); 105645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez return true; 106645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez } 107645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 108645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez static void SetToEmpty(std::unordered_map<K, V>* output) { output->clear(); } 109645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez}; 110645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 111645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez} // namespace mojo 112645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez 113645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez#endif // MOJO_PUBLIC_CPP_BINDINGS_MAP_TRAITS_STL_H_ 114