| // 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_ |