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// 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.
#ifndef MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
#define MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
#include "base/logging.h"
#include "mojo/public/cpp/bindings/array_data_view.h"
#include "mojo/public/cpp/bindings/lib/bindings_internal.h"
#include "mojo/public/cpp/bindings/lib/map_data_internal.h"
#include "mojo/public/cpp/bindings/lib/serialization_context.h"
#include "mojo/public/cpp/bindings/lib/serialization_forward.h"
namespace mojo {
template <typename K, typename V>
class MapDataView {
public:
using Data_ = typename internal::MojomTypeTraits<MapDataView<K, V>>::Data;
MapDataView() {}
MapDataView(Data_* data, internal::SerializationContext* context)
: keys_(data ? data->keys.Get() : nullptr, context),
values_(data ? data->values.Get() : nullptr, context) {}
bool is_null() const {
DCHECK_EQ(keys_.is_null(), values_.is_null());
return keys_.is_null();
}
size_t size() const {
DCHECK_EQ(keys_.size(), values_.size());
return keys_.size();
}
ArrayDataView<K>& keys() { return keys_; }
const ArrayDataView<K>& keys() const { return keys_; }
template <typename U>
bool ReadKeys(U* output) {
return internal::Deserialize<ArrayDataView<K>>(keys_.data_, output,
keys_.context_);
}
ArrayDataView<V>& values() { return values_; }
const ArrayDataView<V>& values() const { return values_; }
template <typename U>
bool ReadValues(U* output) {
return internal::Deserialize<ArrayDataView<V>>(values_.data_, output,
values_.context_);
}
private:
ArrayDataView<K> keys_;
ArrayDataView<V> values_;
};
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
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