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// Copyright 2014 MongoDB Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <bsoncxx/builder/core.hpp>
#include <bsoncxx/builder/stream/key_context.hpp>
#include <bsoncxx/builder/stream/single_context.hpp>
#include <bsoncxx/document/value.hpp>
#include <bsoncxx/document/view.hpp>
#include <bsoncxx/config/prelude.hpp>
namespace bsoncxx {
BSONCXX_INLINE_NAMESPACE_BEGIN
namespace builder {
namespace stream {
///
/// A streaming interface for constructing
/// a BSON document.
///
/// @note Use of the stream builder is discouraged. See
/// http://mongodb.github.io/mongo-cxx-driver/mongocxx-v3/working-with-bson/#stream-builder for more
/// details.
///
class document : public key_context<> {
public:
///
/// Default constructor.
///
BSONCXX_INLINE document() : key_context<>(&_core), _core(false) {}
///
/// @return A view of the BSON document.
///
BSONCXX_INLINE bsoncxx::document::view view() const {
return _core.view_document();
}
///
/// @return A view of the BSON document.
///
BSONCXX_INLINE operator bsoncxx::document::view() const {
return view();
}
///
/// Transfer ownership of the underlying document to the caller.
///
/// @return A document::value with ownership of the document.
///
/// @warning
/// After calling extract() it is illegal to call any methods
/// on this class, unless it is subsequenly moved into.
///
BSONCXX_INLINE bsoncxx::document::value extract() {
return _core.extract_document();
}
///
/// Reset the underlying BSON to an empty document.
///
BSONCXX_INLINE void clear() {
_core.clear();
}
private:
core _core;
};
} // namespace stream
} // namespace builder
BSONCXX_INLINE_NAMESPACE_END
} // namespace bsoncxx
#include <bsoncxx/config/postlude.hpp>
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