refactor!: bump to C++17 and C17

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

CMakeLists.txt

@@ -29,10 +29,10 @@ set(CMAKE_JAVA_TARGET_OUTPUT_DIR ${PROJECT_BINARY_DIR}/jars)
 ######## Set compiler flags ########
 set(CMAKE_CXX_STANDARD_REQUIRED true)
 set(CMAKE_C_STANDARD_REQUIRED true)
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD 17)
 include(GenerateExportHeader)
-set(CMAKE_CXX_FLAGS "-Wall -pedantic -D_GLIBCXX_USE_CXX11_ABI=0 -fstack-protector-strong --param=ssp-buffer-size=4 ${CMAKE_CXX_FLAGS}")
+set(CMAKE_CXX_FLAGS "-Wall -pedantic -fstack-protector-strong --param=ssp-buffer-size=4 ${CMAKE_CXX_FLAGS}")
 if(UNIX AND APPLE)
     set(CMAKE_CXX_FLAGS "-stdlib=libc++ ${CMAKE_CXX_FLAGS}")
 endif()
@@ -319,7 +319,6 @@ endif()
 add_subdirectory(libraries/rainbow) # Qt extension for colors
 add_subdirectory(libraries/LocalPeer) # fork of a library from Qt solutions
 add_subdirectory(libraries/classparser) # class parser library
-add_subdirectory(libraries/optional-bare)
 add_subdirectory(libraries/tomlc99) # toml parser
 add_subdirectory(libraries/katabasis) # An OAuth2 library that tried to do too much
 add_subdirectory(libraries/gamemode)

COPYING.md

@@ -295,34 +295,6 @@
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     SOFTWARE.
 
-# optional-bare
-
-    Code from https://github.com/martinmoene/optional-bare/
-
-    Boost Software License - Version 1.0 - August 17th, 2003
-
-    Permission is hereby granted, free of charge, to any person or organization
-    obtaining a copy of the software and accompanying documentation covered by
-    this license (the "Software") to use, reproduce, display, distribute,
-    execute, and transmit the Software, and to prepare derivative works of the
-    Software, and to permit third-parties to whom the Software is furnished to
-    do so, all subject to the following:
-
-    The copyright notices in the Software and this entire statement, including
-    the above license grant, this restriction and the following disclaimer,
-    must be included in all copies of the Software, in whole or in part, and
-    all derivative works of the Software, unless such copies or derivative
-    works are solely in the form of machine-executable object code generated by
-    a source language processor.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-    SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-    FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-    ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-    DEALINGS IN THE SOFTWARE.
-
 # tomlc99
 
     MIT License

launcher/CMakeLists.txt

@@ -987,7 +987,6 @@ target_link_libraries(Launcher_logic
     Launcher_murmur2
     nbt++
     ${ZLIB_LIBRARIES}
-    optional-bare
     tomlc99
     BuildConfig
     Katabasis

launcher/InstanceImportTask.h

@@ -44,7 +44,7 @@
 #include "QObjectPtr.h"
 #include "modplatform/flame/PackManifest.h"
 
-#include <nonstd/optional>
+#include <optional>
 
 class QuaZip;
 namespace Flame
@@ -90,8 +90,8 @@ private: /* data */
     QString m_archivePath;
     bool m_downloadRequired = false;
     std::unique_ptr<QuaZip> m_packZip;
-    QFuture<nonstd::optional<QStringList>> m_extractFuture;
+    QFuture<std::optional<QStringList>> m_extractFuture;
-    QFutureWatcher<nonstd::optional<QStringList>> m_extractFutureWatcher;
+    QFutureWatcher<std::optional<QStringList>> m_extractFutureWatcher;
     QVector<Flame::File> m_blockedMods;
     enum class ModpackType{
         Unknown,

launcher/MMCZip.cpp

@@ -267,7 +267,7 @@ bool MMCZip::findFilesInZip(QuaZip * zip, const QString & what, QStringList & re
 
 
 // ours
-nonstd::optional<QStringList> MMCZip::extractSubDir(QuaZip *zip, const QString & subdir, const QString &target)
+std::optional<QStringList> MMCZip::extractSubDir(QuaZip *zip, const QString & subdir, const QString &target)
 {
     QDir directory(target);
     QStringList extracted;
@@ -276,7 +276,7 @@ nonstd::optional<QStringList> MMCZip::extractSubDir(QuaZip *zip, const QString &
     auto numEntries = zip->getEntriesCount();
     if(numEntries < 0) {
         qWarning() << "Failed to enumerate files in archive";
-        return nonstd::nullopt;
+        return std::nullopt;
     }
     else if(numEntries == 0) {
         qDebug() << "Extracting empty archives seems odd...";
@@ -285,7 +285,7 @@ nonstd::optional<QStringList> MMCZip::extractSubDir(QuaZip *zip, const QString &
     else if (!zip->goToFirstFile())
     {
         qWarning() << "Failed to seek to first file in zip";
-        return nonstd::nullopt;
+        return std::nullopt;
     }
 
     do
@@ -322,7 +322,7 @@ nonstd::optional<QStringList> MMCZip::extractSubDir(QuaZip *zip, const QString &
         {
             qWarning() << "Failed to extract file" << original_name << "to" << absFilePath;
             JlCompress::removeFile(extracted);
-            return nonstd::nullopt;
+            return std::nullopt;
         }
 
         extracted.append(absFilePath);
@@ -340,7 +340,7 @@ bool MMCZip::extractRelFile(QuaZip *zip, const QString &file, const QString &tar
 }
 
 // ours
-nonstd::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString dir)
+std::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString dir)
 {
     QuaZip zip(fileCompressed);
     if (!zip.open(QuaZip::mdUnzip))
@@ -351,13 +351,13 @@ nonstd::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString
             return QStringList();
         }
         qWarning() << "Could not open archive for unzipping:" << fileCompressed << "Error:" << zip.getZipError();;
-        return nonstd::nullopt;
+        return std::nullopt;
     }
     return MMCZip::extractSubDir(&zip, "", dir);
 }
 
 // ours
-nonstd::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString subdir, QString dir)
+std::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString subdir, QString dir)
 {
     QuaZip zip(fileCompressed);
     if (!zip.open(QuaZip::mdUnzip))
@@ -368,7 +368,7 @@ nonstd::optional<QStringList> MMCZip::extractDir(QString fileCompressed, QString
             return QStringList();
         }
         qWarning() << "Could not open archive for unzipping:" << fileCompressed << "Error:" << zip.getZipError();;
-        return nonstd::nullopt;
+        return std::nullopt;
     }
     return MMCZip::extractSubDir(&zip, subdir, dir);
 }

launcher/MMCZip.h

@@ -42,7 +42,7 @@
 #include <functional>
 
 #include <quazip/JlCompress.h>
-#include <nonstd/optional>
+#include <optional>
 
 namespace MMCZip
 {
@@ -95,7 +95,7 @@ namespace MMCZip
     /**
      * Extract a subdirectory from an archive
      */
-    nonstd::optional<QStringList> extractSubDir(QuaZip *zip, const QString & subdir, const QString &target);
+    std::optional<QStringList> extractSubDir(QuaZip *zip, const QString & subdir, const QString &target);
 
     bool extractRelFile(QuaZip *zip, const QString & file, const QString &target);
 
@@ -106,7 +106,7 @@ namespace MMCZip
      * \param dir The directory to extract to, the current directory if left empty.
      * \return The list of the full paths of the files extracted, empty on failure.
      */
-    nonstd::optional<QStringList> extractDir(QString fileCompressed, QString dir);
+    std::optional<QStringList> extractDir(QString fileCompressed, QString dir);
 
     /**
      * Extract a subdirectory from an archive
@@ -116,7 +116,7 @@ namespace MMCZip
      * \param dir The directory to extract to, the current directory if left empty.
      * \return The list of the full paths of the files extracted, empty on failure.
      */
-    nonstd::optional<QStringList> extractDir(QString fileCompressed, QString subdir, QString dir);
+    std::optional<QStringList> extractDir(QString fileCompressed, QString subdir, QString dir);
 
     /**
      * Extract a single file from an archive into a directory

launcher/minecraft/World.cpp

@@ -53,12 +53,12 @@
 
 #include <QCoreApplication>
 
-#include <nonstd/optional>
+#include <optional>
 
-using nonstd::optional;
+using std::optional;
-using nonstd::nullopt;
+using std::nullopt;
 
-GameType::GameType(nonstd::optional<int> original):
+GameType::GameType(std::optional<int> original):
     original(original)
 {
     if(!original) {

launcher/minecraft/World.h

@@ -16,11 +16,11 @@
 #pragma once
 #include <QFileInfo>
 #include <QDateTime>
-#include <nonstd/optional>
+#include <optional>
 
 struct GameType {
     GameType() = default;
-    GameType (nonstd::optional<int> original);
+    GameType (std::optional<int> original);
 
     QString toTranslatedString() const;
     QString toLogString() const;
@@ -33,7 +33,7 @@ struct GameType {
         Adventure,
         Spectator
     } type = Unknown;
-    nonstd::optional<int> original;
+    std::optional<int> original;
 };
 
 class World

launcher/modplatform/atlauncher/ATLPackInstallTask.h

@@ -46,7 +46,7 @@
 #include "minecraft/PackProfile.h"
 #include "meta/Version.h"
 
-#include <nonstd/optional>
+#include <optional>
 
 namespace ATLauncher {
 
@@ -131,8 +131,8 @@ private:
     Meta::VersionPtr minecraftVersion;
     QMap<QString, Meta::VersionPtr> componentsToInstall;
 
-    QFuture<nonstd::optional<QStringList>> m_extractFuture;
+    QFuture<std::optional<QStringList>> m_extractFuture;
-    QFutureWatcher<nonstd::optional<QStringList>> m_extractFutureWatcher;
+    QFutureWatcher<std::optional<QStringList>> m_extractFutureWatcher;
 
     QFuture<bool> m_modExtractFuture;
     QFutureWatcher<bool> m_modExtractFutureWatcher;

launcher/modplatform/legacy_ftb/PackInstallTask.h

@@ -10,7 +10,7 @@
 
 #include "net/NetJob.h"
 
-#include <nonstd/optional>
+#include <optional>
 
 namespace LegacyFTB {
 
@@ -46,8 +46,8 @@ private: /* data */
     shared_qobject_ptr<QNetworkAccessManager> m_network;
     bool abortable = false;
     std::unique_ptr<QuaZip> m_packZip;
-    QFuture<nonstd::optional<QStringList>> m_extractFuture;
+    QFuture<std::optional<QStringList>> m_extractFuture;
-    QFutureWatcher<nonstd::optional<QStringList>> m_extractFutureWatcher;
+    QFutureWatcher<std::optional<QStringList>> m_extractFutureWatcher;
     NetJob::Ptr netJobContainer;
     QString archivePath;
 

launcher/modplatform/technic/SingleZipPackInstallTask.h

@@ -24,7 +24,7 @@
 #include <QStringList>
 #include <QUrl>
 
-#include <nonstd/optional>
+#include <optional>
 
 namespace Technic {
 
@@ -57,8 +57,8 @@ private:
     QString m_archivePath;
     NetJob::Ptr m_filesNetJob;
     std::unique_ptr<QuaZip> m_packZip;
-    QFuture<nonstd::optional<QStringList>> m_extractFuture;
+    QFuture<std::optional<QStringList>> m_extractFuture;
-    QFutureWatcher<nonstd::optional<QStringList>> m_extractFutureWatcher;
+    QFutureWatcher<std::optional<QStringList>> m_extractFutureWatcher;
 };
 
 } // namespace Technic

libraries/README.md

@@ -155,14 +155,6 @@ Canonical implementation of the murmur2 hash, taken from [SMHasher](https://gith
 
 Public domain (the author disclaimed the copyright).
 
-## optional-bare
-
-A simple single-file header-only version of a C++17-like optional for default-constructible, copyable types, for C++98 and later.
-
-Imported from: https://github.com/martinmoene/optional-bare/commit/0bb1d183bcee1e854c4ea196b533252c51f98b81
-
-Boost Software License - Version 1.0
-
 ## quazip
 
 A zip manipulation library, forked for MultiMC's use.

libraries/optional-bare/CMakeLists.txt

@@ -1,5 +0,0 @@
-cmake_minimum_required(VERSION 3.9.4)
-project(optional-bare)
-
-add_library(optional-bare INTERFACE)
-target_include_directories(optional-bare INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/include")

libraries/optional-bare/LICENSE.txt

@@ -1,23 +0,0 @@
-Boost Software License - Version 1.0 - August 17th, 2003
-
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.

libraries/optional-bare/README.md

@@ -1,5 +0,0 @@
-# optional bare
-
-A simple single-file header-only version of a C++17-like optional for default-constructible, copyable types, for C++98 and later.
-
-Imported from: https://github.com/martinmoene/optional-bare/commit/0bb1d183bcee1e854c4ea196b533252c51f98b81

libraries/optional-bare/include/nonstd/optional

@@ -1,508 +0,0 @@
-//
-// Copyright 2017-2019 by Martin Moene
-//
-// https://github.com/martinmoene/optional-bare
-//
-// Distributed under the Boost Software License, Version 1.0.
-// (See accompanying file LICENSE.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef NONSTD_OPTIONAL_BARE_HPP
-#define NONSTD_OPTIONAL_BARE_HPP
-
-#define optional_bare_MAJOR  1
-#define optional_bare_MINOR  1
-#define optional_bare_PATCH  0
-
-#define optional_bare_VERSION  optional_STRINGIFY(optional_bare_MAJOR) "." optional_STRINGIFY(optional_bare_MINOR) "." optional_STRINGIFY(optional_bare_PATCH)
-
-#define optional_STRINGIFY(  x )  optional_STRINGIFY_( x )
-#define optional_STRINGIFY_( x )  #x
-
-// optional-bare configuration:
-
-#define optional_OPTIONAL_DEFAULT  0
-#define optional_OPTIONAL_NONSTD   1
-#define optional_OPTIONAL_STD      2
-
-#if !defined( optional_CONFIG_SELECT_OPTIONAL )
-# define optional_CONFIG_SELECT_OPTIONAL  ( optional_HAVE_STD_OPTIONAL ? optional_OPTIONAL_STD : optional_OPTIONAL_NONSTD )
-#endif
-
-// Control presence of exception handling (try and auto discover):
-
-#ifndef optional_CONFIG_NO_EXCEPTIONS
-# if _MSC_VER
-#  include <cstddef>    // for _HAS_EXCEPTIONS
-# endif
-# if _MSC_VER
-#  include <cstddef>    // for _HAS_EXCEPTIONS
-# endif
-# if defined(__cpp_exceptions) || defined(__EXCEPTIONS) || (_HAS_EXCEPTIONS)
-#  define optional_CONFIG_NO_EXCEPTIONS  0
-# else
-#  define optional_CONFIG_NO_EXCEPTIONS  1
-# endif
-#endif
-
-// C++ language version detection (C++20 is speculative):
-// Note: VC14.0/1900 (VS2015) lacks too much from C++14.
-
-#ifndef   optional_CPLUSPLUS
-# if defined(_MSVC_LANG ) && !defined(__clang__)
-#  define optional_CPLUSPLUS  (_MSC_VER == 1900 ? 201103L : _MSVC_LANG )
-# else
-#  define optional_CPLUSPLUS  __cplusplus
-# endif
-#endif
-
-#define optional_CPP98_OR_GREATER  ( optional_CPLUSPLUS >= 199711L )
-#define optional_CPP11_OR_GREATER  ( optional_CPLUSPLUS >= 201103L )
-#define optional_CPP14_OR_GREATER  ( optional_CPLUSPLUS >= 201402L )
-#define optional_CPP17_OR_GREATER  ( optional_CPLUSPLUS >= 201703L )
-#define optional_CPP20_OR_GREATER  ( optional_CPLUSPLUS >= 202000L )
-
-// C++ language version (represent 98 as 3):
-
-#define optional_CPLUSPLUS_V  ( optional_CPLUSPLUS / 100 - (optional_CPLUSPLUS > 200000 ? 2000 : 1994) )
-
-// Use C++17 std::optional if available and requested:
-
-#if optional_CPP17_OR_GREATER && defined(__has_include )
-# if __has_include( <optional> )
-#  define optional_HAVE_STD_OPTIONAL  1
-# else
-#  define optional_HAVE_STD_OPTIONAL  0
-# endif
-#else
-# define  optional_HAVE_STD_OPTIONAL  0
-#endif
-
-#define optional_USES_STD_OPTIONAL  ( (optional_CONFIG_SELECT_OPTIONAL == optional_OPTIONAL_STD) || ((optional_CONFIG_SELECT_OPTIONAL == optional_OPTIONAL_DEFAULT) && optional_HAVE_STD_OPTIONAL) )
-
-//
-// Using std::optional:
-//
-
-#if optional_USES_STD_OPTIONAL
-
-#include <optional>
-#include <utility>
-
-namespace nonstd {
-
-    using std::in_place;
-    using std::in_place_type;
-    using std::in_place_index;
-    using std::in_place_t;
-    using std::in_place_type_t;
-    using std::in_place_index_t;
-
-    using std::optional;
-    using std::bad_optional_access;
-    using std::hash;
-
-    using std::nullopt;
-    using std::nullopt_t;
-
-    using std::operator==;
-    using std::operator!=;
-    using std::operator<;
-    using std::operator<=;
-    using std::operator>;
-    using std::operator>=;
-    using std::make_optional;
-    using std::swap;
-}
-
-#else // optional_USES_STD_OPTIONAL
-
-#include <cassert>
-
-#if ! optional_CONFIG_NO_EXCEPTIONS
-# include <stdexcept>
-#endif
-
-namespace nonstd { namespace optional_bare {
-
-// type for nullopt
-
-struct nullopt_t
-{
-    struct init{};
-    nullopt_t( init ) {}
-};
-
-// extra parenthesis to prevent the most vexing parse:
-
-const nullopt_t nullopt(( nullopt_t::init() ));
-
-// optional access error.
-
-#if ! optional_CONFIG_NO_EXCEPTIONS
-
-class bad_optional_access : public std::logic_error
-{
-public:
-  explicit bad_optional_access()
-  : logic_error( "bad optional access" ) {}
-};
-
-#endif // optional_CONFIG_NO_EXCEPTIONS
-
-// Simplistic optional: requires T to be default constructible, copyable.
-
-template< typename T >
-class optional
-{
-private:
-    typedef void (optional::*safe_bool)() const;
-
-public:
-    typedef T value_type;
-
-    optional()
-    : has_value_( false )
-    {}
-
-    optional( nullopt_t )
-    : has_value_( false )
-    {}
-
-    optional( T const & arg )
-    : has_value_( true )
-    , value_    ( arg  )
-    {}
-
-    template< class U >
-    optional( optional<U> const & other )
-    : has_value_( other.has_value() )
-    , value_    ( other.value()     )
-    {}
-
-    optional & operator=( nullopt_t )
-    {
-        reset();
-        return *this;
-    }
-
-    template< class U >
-    optional & operator=( optional<U> const & other )
-    {
-        has_value_ = other.has_value();
-        value_     = other.value();
-        return *this;
-    }
-
-    void swap( optional & rhs )
-    {
-        using std::swap;
-        if      ( has_value() == true  && rhs.has_value() == true  ) { swap( **this, *rhs ); }
-        else if ( has_value() == false && rhs.has_value() == true  ) { initialize( *rhs ); rhs.reset(); }
-        else if ( has_value() == true  && rhs.has_value() == false ) { rhs.initialize( **this ); reset(); }
-    }
-
-    // observers
-
-    value_type const * operator->() const
-    {
-        return assert( has_value() ),
-            &value_;
-    }
-
-    value_type * operator->()
-    {
-        return assert( has_value() ),
-            &value_;
-    }
-
-    value_type const & operator*() const
-    {
-        return assert( has_value() ),
-            value_;
-    }
-
-    value_type & operator*()
-    {
-        return assert( has_value() ),
-            value_;
-    }
-
-#if optional_CPP11_OR_GREATER
-    explicit operator bool() const
-    {
-        return has_value();
-    }
-#else
-    operator safe_bool() const
-    {
-        return has_value() ? &optional::this_type_does_not_support_comparisons : 0;
-    }
-#endif
-
-    bool has_value() const
-    {
-        return has_value_;
-    }
-
-    value_type const & value() const
-    {
-#if optional_CONFIG_NO_EXCEPTIONS
-        assert( has_value() );
-#else
-        if ( ! has_value() )
-            throw bad_optional_access();
-#endif
-        return value_;
-    }
-
-    value_type & value()
-    {
-#if optional_CONFIG_NO_EXCEPTIONS
-        assert( has_value() );
-#else
-        if ( ! has_value() )
-            throw bad_optional_access();
-#endif
-        return value_;
-    }
-
-    template< class U >
-    value_type value_or( U const & v ) const
-    {
-        return has_value() ? value() : static_cast<value_type>( v );
-    }
-
-    // modifiers
-
-    void reset()
-    {
-        has_value_ = false;
-    }
-
-private:
-    void this_type_does_not_support_comparisons() const {}
-
-    template< typename V >
-    void initialize( V const & value )
-    {
-        assert( ! has_value()  );
-        value_ = value;
-        has_value_ = true;
-    }
-
-private:
-    bool has_value_;
-    value_type value_;
-};
-
-// Relational operators
-
-template< typename T, typename U >
-inline bool operator==( optional<T> const & x, optional<U> const & y )
-{
-    return bool(x) != bool(y) ? false : bool(x) == false ? true : *x == *y;
-}
-
-template< typename T, typename U >
-inline bool operator!=( optional<T> const & x, optional<U> const & y )
-{
-    return !(x == y);
-}
-
-template< typename T, typename U >
-inline bool operator<( optional<T> const & x, optional<U> const & y )
-{
-    return (!y) ? false : (!x) ? true : *x < *y;
-}
-
-template< typename T, typename U >
-inline bool operator>( optional<T> const & x, optional<U> const & y )
-{
-    return (y < x);
-}
-
-template< typename T, typename U >
-inline bool operator<=( optional<T> const & x, optional<U> const & y )
-{
-    return !(y < x);
-}
-
-template< typename T, typename U >
-inline bool operator>=( optional<T> const & x, optional<U> const & y )
-{
-    return !(x < y);
-}
-
-// Comparison with nullopt
-
-template< typename T >
-inline bool operator==( optional<T> const & x, nullopt_t )
-{
-    return (!x);
-}
-
-template< typename T >
-inline bool operator==( nullopt_t, optional<T> const & x )
-{
-    return (!x);
-}
-
-template< typename T >
-inline bool operator!=( optional<T> const & x, nullopt_t )
-{
-    return bool(x);
-}
-
-template< typename T >
-inline bool operator!=( nullopt_t, optional<T> const & x )
-{
-    return bool(x);
-}
-
-template< typename T >
-inline bool operator<( optional<T> const &, nullopt_t )
-{
-    return false;
-}
-
-template< typename T >
-inline bool operator<( nullopt_t, optional<T> const & x )
-{
-    return bool(x);
-}
-
-template< typename T >
-inline bool operator<=( optional<T> const & x, nullopt_t )
-{
-    return (!x);
-}
-
-template< typename T >
-inline bool operator<=( nullopt_t, optional<T> const & )
-{
-    return true;
-}
-
-template< typename T >
-inline bool operator>( optional<T> const & x, nullopt_t )
-{
-    return bool(x);
-}
-
-template< typename T >
-inline bool operator>( nullopt_t, optional<T> const & )
-{
-    return false;
-}
-
-template< typename T >
-inline bool operator>=( optional<T> const &, nullopt_t )
-{
-    return true;
-}
-
-template< typename T >
-inline bool operator>=( nullopt_t, optional<T> const & x )
-{
-    return (!x);
-}
-
-// Comparison with T
-
-template< typename T, typename U >
-inline bool operator==( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x == v : false;
-}
-
-template< typename T, typename U >
-inline bool operator==( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v == *x : false;
-}
-
-template< typename T, typename U >
-inline bool operator!=( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x != v : true;
-}
-
-template< typename T, typename U >
-inline bool operator!=( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v != *x : true;
-}
-
-template< typename T, typename U >
-inline bool operator<( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x < v : true;
-}
-
-template< typename T, typename U >
-inline bool operator<( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v < *x : false;
-}
-
-template< typename T, typename U >
-inline bool operator<=( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x <= v : true;
-}
-
-template< typename T, typename U >
-inline bool operator<=( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v <= *x : false;
-}
-
-template< typename T, typename U >
-inline bool operator>( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x > v : false;
-}
-
-template< typename T, typename U >
-inline bool operator>( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v > *x : true;
-}
-
-template< typename T, typename U >
-inline bool operator>=( optional<T> const & x, U const & v )
-{
-    return bool(x) ? *x >= v : false;
-}
-
-template< typename T, typename U >
-inline bool operator>=( U const & v, optional<T> const & x )
-{
-    return bool(x) ? v >= *x : true;
-}
-
-// Specialized algorithms
-
-template< typename T >
-void swap( optional<T> & x, optional<T> & y )
-{
-    x.swap( y );
-}
-
-// Convenience function to create an optional.
-
-template< typename T >
-inline optional<T> make_optional( T const & v )
-{
-    return optional<T>( v );
-}
-
-} // namespace optional-bare
-
-using namespace optional_bare;
-
-} // namespace nonstd
-
-#endif // optional_USES_STD_OPTIONAL
-
-#endif // NONSTD_OPTIONAL_BARE_HPP