64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
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#define MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
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#include "base/logging.h"
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#include "mojo/public/cpp/bindings/array_data_view.h"
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#include "mojo/public/cpp/bindings/lib/bindings_internal.h"
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#include "mojo/public/cpp/bindings/lib/map_data_internal.h"
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#include "mojo/public/cpp/bindings/lib/serialization_context.h"
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#include "mojo/public/cpp/bindings/lib/serialization_forward.h"
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namespace mojo {
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template <typename K, typename V>
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class MapDataView {
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public:
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using Data_ = typename internal::MojomTypeTraits<MapDataView<K, V>>::Data;
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MapDataView() {}
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MapDataView(Data_* data, internal::SerializationContext* context)
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: keys_(data ? data->keys.Get() : nullptr, context),
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values_(data ? data->values.Get() : nullptr, context) {}
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bool is_null() const {
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DCHECK_EQ(keys_.is_null(), values_.is_null());
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return keys_.is_null();
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}
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size_t size() const {
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DCHECK_EQ(keys_.size(), values_.size());
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return keys_.size();
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}
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ArrayDataView<K>& keys() { return keys_; }
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const ArrayDataView<K>& keys() const { return keys_; }
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template <typename U>
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bool ReadKeys(U* output) {
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return internal::Deserialize<ArrayDataView<K>>(keys_.data_, output,
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keys_.context_);
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}
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ArrayDataView<V>& values() { return values_; }
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const ArrayDataView<V>& values() const { return values_; }
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template <typename U>
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bool ReadValues(U* output) {
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return internal::Deserialize<ArrayDataView<V>>(values_.data_, output,
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values_.context_);
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}
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private:
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ArrayDataView<K> keys_;
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ArrayDataView<V> values_;
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};
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} // namespace mojo
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#endif // MOJO_PUBLIC_CPP_BINDINGS_MAP_DATA_VIEW_H_
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