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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/basic/impl.hpp>
#include <bsoncxx/builder/basic/kvp.hpp>
#include <bsoncxx/builder/basic/sub_document.hpp>
#include <bsoncxx/builder/core.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 basic {
class array;
///
/// A traditional builder-style interface for constructing
/// a BSON document.
///
class document : public sub_document {
public:
///
/// Default constructor
///
BSONCXX_INLINE document() : sub_document(&_core), _core(false) {}
///
/// Move constructor
///
BSONCXX_INLINE document(document &&doc) noexcept : sub_document(&_core),
_core(std::move(doc._core)) {}
///
/// Move assignment operator
///
BSONCXX_INLINE document& operator=(document&& doc) noexcept {
_core = std::move(doc._core);
return *this;
}
///
/// @return A view of the BSON document.
///
BSONCXX_INLINE bsoncxx::document::view view() const {
return _core.view_document();
}
///
/// Conversion operator that provides a view of the current builder
/// contents.
///
/// @return A view of the current builder contents.
///
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;
};
///
/// Creates a document from a list of key-value pairs.
///
/// @param args
/// A variadiac list of key-value pairs. The types of the keys and values can be anything that
/// builder::basic::sub_document::append accepts.
///
/// @return
/// A bsoncxx::document::value containing the elements.
///
template <typename... Args>
bsoncxx::document::value BSONCXX_CALL make_document(Args&&... args) {
basic::document document;
document.append(std::forward<Args>(args)...);
return document.extract();
}
} // namespace basic
} // namespace builder
BSONCXX_INLINE_NAMESPACE_END
} // namespace bsoncxx
#include <bsoncxx/config/postlude.hpp>