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 <bsoncxx/v1/array/value-fwd.hpp> // IWYU pragma: export
 
//
 
#include <bsoncxx/v1/detail/prelude.hpp>
 
#include <bsoncxx/v1/array/view.hpp> // IWYU pragma: export
#include <bsoncxx/v1/detail/type_traits.hpp>
#include <bsoncxx/v1/document/value.hpp> // IWYU pragma: export
 
#include <cstddef>
#include <cstdint>
#include <type_traits>
#include <utility>
 
namespace bsoncxx {
namespace v1 {
namespace array {

class value {
   private:
    v1::document::value _value;
 
    template <typename T>
    struct is_valid_deleter : std::is_constructible<v1::document::value, std::uint8_t*, T> {};
 
   public:
    using deleter_type = v1::document::value::deleter_type;

    using default_deleter_type = v1::document::value::default_deleter_type;

    using unique_ptr_type = v1::document::value::unique_ptr_type;

    using const_iterator = v1::document::view::const_iterator;

    using iterator = const_iterator;

    ~value() = default;

    value(value&& other) noexcept = default;

    value& operator=(value&& other) noexcept = default;

    value(value const& other) : _value(other._value) {}

    value& operator=(v1::array::view view) {
        this->reset(view);
        return *this;
    }

    value& operator=(value const& other) {
        _value = other._value;
        return *this;
    }

    value() = default;

    template <typename Deleter, detail::enable_if_t<is_valid_deleter<Deleter>::value>* = nullptr>
    value(std::uint8_t* data, Deleter deleter) : _value{data, std::move(deleter)} {}

    template <typename Deleter, detail::enable_if_t<is_valid_deleter<Deleter>::value>* = nullptr>
    value(std::uint8_t* data, std::size_t length, Deleter deleter) : _value{data, length, std::move(deleter)} {}

    explicit value(std::uint8_t* data) : _value{data} {}

    value(std::uint8_t* data, std::size_t length) : _value{data, length} {}

    explicit value(unique_ptr_type ptr) : _value{std::move(ptr)} {}

    value(unique_ptr_type ptr, std::size_t length) : _value{std::move(ptr), length} {}

    explicit value(v1::array::view view) : _value{view} {}

    deleter_type const& get_deleter() const {
        return _value.get_deleter();
    }

    unique_ptr_type release() {
        return _value.release();
    }

    void reset(value v) {
        _value = std::move(v._value);
    }

    void reset(v1::array::view v) {
        *this = value{v};
    }

    v1::array::view view() const {
        return v1::array::view{_value.data()};
    }

    /* explicit(false) */ operator v1::array::view() const {
        return this->view();
    }

    v1::array::view::const_iterator cbegin() const {
        return this->view().cbegin();
    }

    v1::array::view::const_iterator cend() const {
        return this->view().cend();
    }

    v1::array::view::const_iterator begin() const {
        return this->view().begin();
    }

    v1::array::view::const_iterator end() const {
        return this->view().end();
    }

    v1::array::view::const_iterator find(std::uint32_t i) const {
        return this->view().find(i);
    }

    v1::element::view operator[](std::uint32_t i) const {
        return this->view()[i];
    }

    std::uint8_t const* data() const {
        return this->view().data();
    }

    std::size_t size() const {
        return this->view().size();
    }

    std::size_t length() const {
        return this->view().length();
    }

    bool empty() const {
        return this->view().empty();
    }

    explicit operator bool() const {
        return this->view().operator bool();
    }

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

    friend bool operator!=(value const& lhs, value const& rhs) {
        return !(lhs == rhs);
    }
};
 
} // namespace array
} // namespace v1
} // namespace bsoncxx
 
#include <bsoncxx/v1/detail/postlude.hpp>