value.hpp

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// Copyright 2009-present 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 <cstdlib>
#include <memory>
#include <type_traits>
 
#include <bsoncxx/document/value-fwd.hpp>
 
#include <bsoncxx/array/view.hpp>
#include <bsoncxx/document/view.hpp>
#include <bsoncxx/stdx/type_traits.hpp>
 
#include <bsoncxx/config/prelude.hpp>
 
namespace bsoncxx {
namespace v_noabi {
namespace document {

class value {
   public:
    using deleter_type = void(BSONCXX_ABI_CDECL*)(std::uint8_t*);
    using unique_ptr_type = std::unique_ptr<uint8_t[], deleter_type>;

    BSONCXX_ABI_EXPORT_CDECL() value(std::uint8_t* data, std::size_t length, deleter_type dtor);

    BSONCXX_ABI_EXPORT_CDECL() value(unique_ptr_type ptr, std::size_t length);

    explicit BSONCXX_ABI_EXPORT_CDECL() value(document::view view);
 
    ~value() = default;
 
    BSONCXX_ABI_EXPORT_CDECL() value(value const&);
    BSONCXX_ABI_EXPORT_CDECL(value&) operator=(value const&);
 
    value(value&&) = default;
    value& operator=(value&&) = default;

    template <typename T, detail::requires_not_t<int, std::is_same<T, array::view>> = 0>
    explicit value(T const& t) : value({}) {
        to_bson(t, *this);
    }
    explicit value(T const& t) : value({}) {…}
    template <typename T>
    value& operator=(T const& t) {
        *this = value{t};
        return *this;
    }

    BSONCXX_ABI_EXPORT_CDECL(document::view::const_iterator) cbegin() const;

    BSONCXX_ABI_EXPORT_CDECL(document::view::const_iterator) cend() const;

    BSONCXX_ABI_EXPORT_CDECL(document::view::const_iterator) begin() const;

    BSONCXX_ABI_EXPORT_CDECL(document::view::const_iterator) end() const;

    BSONCXX_ABI_EXPORT_CDECL(document::view::const_iterator) find(stdx::string_view key) const;

    BSONCXX_ABI_EXPORT_CDECL(element) operator[](stdx::string_view key) const;

    BSONCXX_ABI_EXPORT_CDECL(std::uint8_t const*) data() const;

    BSONCXX_ABI_EXPORT_CDECL(std::size_t) length() const;

    BSONCXX_ABI_EXPORT_CDECL(bool) empty() const;

    document::view view() const noexcept {
        // Silence false positive with g++ 10.2.1 on Debian 11.
        BSONCXX_PRIVATE_WARNINGS_PUSH();
        BSONCXX_PRIVATE_WARNINGS_DISABLE(GCC("-Wmaybe-uninitialized"));
        return document::view{static_cast<uint8_t*>(_data.get()), _length};
        BSONCXX_PRIVATE_WARNINGS_POP();
    }
    document::view view() const noexcept {…}

    operator document::view() const noexcept {
        return view();
    }
    operator document::view() const noexcept {…}

    template <typename T>
    T get() {
        T temp{};
        from_bson(temp, this->view());
        return temp;
    }
    T get() {…}

    template <typename T>
    void get(T& t) {
        from_bson(t, this->view());
    }
    void get(T& t) {…}

    BSONCXX_ABI_EXPORT_CDECL(unique_ptr_type) release();

    BSONCXX_ABI_EXPORT_CDECL(void) reset(document::view view);
 
   private:
    unique_ptr_type _data;
    std::size_t _length{0};
};
class value {…};


inline bool operator==(value const& lhs, value const& rhs) {
    return (lhs.view() == rhs.view());
}
inline bool operator==(value const& lhs, value const& rhs) {…}

inline bool operator!=(value const& lhs, value const& rhs) {
    return !(lhs == rhs);
}
inline bool operator!=(value const& lhs, value const& rhs) {…}

 
} // namespace document
} // namespace v_noabi
} // namespace bsoncxx
 
namespace bsoncxx {
namespace document {
 
using ::bsoncxx::v_noabi::document::operator==;
using ::bsoncxx::v_noabi::document::operator!=;
 
} // namespace document
} // namespace bsoncxx
 
#include <bsoncxx/config/postlude.hpp>