blob: dd68b3686abd6db47c5cea8f287998c8423c0f1d [file] [log] [blame]
// Copyright 2016 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.
#include "base/logging.h"
#include "mojo/public/cpp/bindings/map_traits.h"
#include "third_party/WebKit/Source/wtf/HashMap.h"
namespace mojo {
template <typename K, typename V>
struct MapTraits<WTF::HashMap<K, V>> {
using Key = K;
using Value = V;
using Iterator = typename WTF::HashMap<K, V>::iterator;
using ConstIterator = typename WTF::HashMap<K, V>::const_iterator;
static bool IsNull(const WTF::HashMap<K, V>& input) {
// WTF::HashMap<> is always converted to non-null mojom map.
return false;
static void SetToNull(WTF::HashMap<K, V>* output) {
// WTF::HashMap<> doesn't support null state. Set it to empty instead.
static size_t GetSize(const WTF::HashMap<K, V>& input) {
return input.size();
static ConstIterator GetBegin(const WTF::HashMap<K, V>& input) {
return input.begin();
static Iterator GetBegin(WTF::HashMap<K, V>& input) { return input.begin(); }
static void AdvanceIterator(ConstIterator& iterator) { ++iterator; }
static void AdvanceIterator(Iterator& iterator) { ++iterator; }
static const K& GetKey(Iterator& iterator) { return iterator->key; }
static const K& GetKey(ConstIterator& iterator) { return iterator->key; }
static V& GetValue(Iterator& iterator) { return iterator->value; }
static const V& GetValue(ConstIterator& iterator) { return iterator->value; }
template <typename IK, typename IV>
static bool Insert(WTF::HashMap<K, V>& input, IK&& key, IV&& value) {
if (!WTF::HashMap<K, V>::isValidKey(key)) {
LOG(ERROR) << "The key value is disallowed by WTF::HashMap";
return false;
input.insert(std::forward<IK>(key), std::forward<IV>(value));
return true;
static void SetToEmpty(WTF::HashMap<K, V>* output) { output->clear(); }
} // namespace mojo