json.hpp

// Copyright 2015 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/config/prelude.hpp>

#include <string>

#include <bsoncxx/document/value.hpp>
#include <bsoncxx/document/view.hpp>
#include <bsoncxx/stdx/optional.hpp>

///
/// Top level namespace for MongoDB C++ BSON functionality.
///
namespace bsoncxx {
BSONCXX_INLINE_NAMESPACE_BEGIN

// Placing this variable between the `BSONCXX_INLINE_NAMESPACE_BEGIN` and the Doxygen documentation
// for `to_json` suppressed the macro name from being shown as part of the return type in the
// generated documentation pages.
extern const bool k_silence_doxygen;

///
/// An enumeration of the types of Extended JSON that the to_json function accepts
enum class ExtendedJsonMode : std::uint8_t {
    k_legacy,     ///< to produce Legacy Extended JSON
    k_canonical,  ///< to produce Canonical Extended JSON
    k_relaxed,    ///< to produce Relaxed Extended JSON
};

///
/// Converts a BSON document to a JSON string, in extended format.
///
/// @param view
///   A valid BSON document.
/// @param mode
///   An optional JSON representation mode.
///
/// @throws bsoncxx::exception with error details if the conversion failed.
///
/// @returns An extended JSON string.
///
BSONCXX_API std::string BSONCXX_CALL to_json(document::view view,
                                             ExtendedJsonMode mode = ExtendedJsonMode::k_legacy);

///
/// Constructs a new document::value from the provided JSON text.
///
/// @param 'json'
///  A string_view into a JSON document.
///
/// @returns A document::value if conversion worked.
///
/// @throws bsoncxx::exception with error details if the conversion failed.
///
BSONCXX_API document::value BSONCXX_CALL from_json(stdx::string_view json);

///
/// Constructs a new document::value from the provided JSON text. This is the UDL version of
/// from_json().
///
/// @param 'json'
///  A string into a JSON document.
///
/// @param 'len'
///  The length of the JSON string. This is calculated automatically upon use of the UDL.
///
/// @returns A document::value if conversion worked.
///
/// @throws bsoncxx::exception with error details if the conversion failed.
///
BSONCXX_API document::value BSONCXX_CALL operator"" _bson(const char* json, size_t len);

BSONCXX_INLINE_NAMESPACE_END
}  // namespace bsoncxx

#include <bsoncxx/config/postlude.hpp>