Reimport boost/utility as a separate project

28 files changed, 26 insertions, 1874 deletions

diff --git a/CMakeLists.darwin.txt b/CMakeLists.darwin.txt
index cce2ec0e5c..8663209280 100644
--- a/CMakeLists.darwin.txt
+++ b/CMakeLists.darwin.txt
@@ -148,6 +148,7 @@ add_subdirectory(contrib/restricted/boost/mp11)
 add_subdirectory(contrib/restricted/boost/predef)
 add_subdirectory(contrib/restricted/boost/preprocessor)
 add_subdirectory(contrib/restricted/boost/type_traits)
+add_subdirectory(contrib/restricted/boost/utility)
 add_subdirectory(contrib/restricted/boost/vmd)
 add_subdirectory(contrib/restricted/boost/winapi)
 add_subdirectory(contrib/restricted/fast_float)
diff --git a/CMakeLists.linux.txt b/CMakeLists.linux.txt
index c3f8622c4b..7e8ce0f4ea 100644
--- a/CMakeLists.linux.txt
+++ b/CMakeLists.linux.txt
@@ -226,6 +226,7 @@ add_subdirectory(contrib/restricted/boost/mp11)
 add_subdirectory(contrib/restricted/boost/predef)
 add_subdirectory(contrib/restricted/boost/preprocessor)
 add_subdirectory(contrib/restricted/boost/type_traits)
+add_subdirectory(contrib/restricted/boost/utility)
 add_subdirectory(contrib/restricted/boost/vmd)
 add_subdirectory(contrib/restricted/boost/winapi)
 add_subdirectory(contrib/restricted/fast_float)
diff --git a/contrib/restricted/boost/CMakeLists.txt b/contrib/restricted/boost/CMakeLists.txt
index 14d5f969fa..e9d502974b 100644
--- a/contrib/restricted/boost/CMakeLists.txt
+++ b/contrib/restricted/boost/CMakeLists.txt
@@ -28,6 +28,7 @@ target_link_libraries(contrib-restricted-boost INTERFACE
   restricted-boost-static_assert
   restricted-boost-throw_exception
   restricted-boost-type_traits
+  restricted-boost-utility
   restricted-boost-vmd
   restricted-boost-winapi
 )
diff --git a/contrib/restricted/boost/boost/detail/ob_compressed_pair.hpp b/contrib/restricted/boost/boost/detail/ob_compressed_pair.hpp
deleted file mode 100644
index 326e454980..0000000000
--- a/contrib/restricted/boost/boost/detail/ob_compressed_pair.hpp
+++ /dev/null
@@ -1,499 +0,0 @@
-//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
-//  Use, modification and distribution are subject to the Boost Software License,
-//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
-//  http://www.boost.org/LICENSE_1_0.txt).
-//
-//  See http://www.boost.org/libs/utility for most recent version including documentation.
-//  see libs/utility/compressed_pair.hpp
-//
-/* Release notes:
-   20 Jan 2001:
-        Fixed obvious bugs (David Abrahams)
-   07 Oct 2000:
-      Added better single argument constructor support.
-   03 Oct 2000:
-      Added VC6 support (JM).
-   23rd July 2000:
-      Additional comments added. (JM)
-   Jan 2000:
-      Original version: this version crippled for use with crippled compilers
-      - John Maddock Jan 2000.
-*/
-
-
-#ifndef BOOST_OB_COMPRESSED_PAIR_HPP
-#define BOOST_OB_COMPRESSED_PAIR_HPP
-
-#include <algorithm>
-#ifndef BOOST_OBJECT_TYPE_TRAITS_HPP
-#include <boost/type_traits/object_traits.hpp>
-#endif
-#ifndef BOOST_SAME_TRAITS_HPP
-#include <boost/type_traits/same_traits.hpp>
-#endif
-#ifndef BOOST_CALL_TRAITS_HPP
-#include <boost/call_traits.hpp>
-#endif
-
-namespace boost
-{
-#ifdef BOOST_MSVC6_MEMBER_TEMPLATES
-//
-// use member templates to emulate
-// partial specialisation.  Note that due to
-// problems with overload resolution with VC6
-// each of the compressed_pair versions that follow
-// have one template single-argument constructor
-// in place of two specific constructors:
-//
-
-template <class T1, class T2>
-class compressed_pair;
-
-namespace detail{
-
-template <class A, class T1, class T2>
-struct best_conversion_traits
-{
-   typedef char one;
-   typedef char (&two)[2];
-   static A a;
-   static one test(T1);
-   static two test(T2);
-
-   enum { value = sizeof(test(a)) };
-};
-
-template <int>
-struct init_one;
-
-template <>
-struct init_one<1>
-{
-   template <class A, class T1, class T2>
-   static void init(const A& a, T1* p1, T2*)
-   {
-      *p1 = a;
-   }
-};
-
-template <>
-struct init_one<2>
-{
-   template <class A, class T1, class T2>
-   static void init(const A& a, T1*, T2* p2)
-   {
-      *p2 = a;
-   }
-};
-
-
-// T1 != T2, both non-empty
-template <class T1, class T2>
-class compressed_pair_0
-{
-private:
-   T1 _first;
-   T2 _second;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_0() : _first(), _second() {}
-            compressed_pair_0(first_param_type x, second_param_type y) : _first(x), _second(y) {}
-   template <class A>
-   explicit compressed_pair_0(const A& val)
-   {
-      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, &_second);
-   }
-   compressed_pair_0(const ::boost::compressed_pair<T1,T2>& x)
-      : _first(x.first()), _second(x.second()) {}
-
-#if 0
-  compressed_pair_0& operator=(const compressed_pair_0& x) {
-    cout << "assigning compressed pair 0" << endl;
-    _first = x._first;
-    _second = x._second;
-    cout << "finished assigning compressed pair 0" << endl;
-    return *this;
-  }
-#endif
-
-   first_reference       first()       { return _first; }
-   first_const_reference first() const { return _first; }
-
-   second_reference       second()       { return _second; }
-   second_const_reference second() const { return _second; }
-
-   void swap(compressed_pair_0& y)
-   {
-      using std::swap;
-      swap(_first, y._first);
-      swap(_second, y._second);
-   }
-};
-
-// T1 != T2, T2 empty
-template <class T1, class T2>
-class compressed_pair_1 : T2
-{
-private:
-   T1 _first;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_1() : T2(), _first() {}
-            compressed_pair_1(first_param_type x, second_param_type y) : T2(y), _first(x) {}
-
-   template <class A>
-   explicit compressed_pair_1(const A& val)
-   {
-      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, static_cast<T2*>(this));
-   }
-
-   compressed_pair_1(const ::boost::compressed_pair<T1,T2>& x)
-      : T2(x.second()), _first(x.first()) {}
-
-   first_reference       first()       { return _first; }
-   first_const_reference first() const { return _first; }
-
-   second_reference       second()       { return *this; }
-   second_const_reference second() const { return *this; }
-
-   void swap(compressed_pair_1& y)
-   {
-      // no need to swap empty base class:
-      using std::swap;
-      swap(_first, y._first);
-   }
-};
-
-// T1 != T2, T1 empty
-template <class T1, class T2>
-class compressed_pair_2 : T1
-{
-private:
-   T2 _second;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_2() : T1(), _second() {}
-            compressed_pair_2(first_param_type x, second_param_type y) : T1(x), _second(y) {}
-   template <class A>
-   explicit compressed_pair_2(const A& val)
-   {
-      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), &_second);
-   }
-   compressed_pair_2(const ::boost::compressed_pair<T1,T2>& x)
-      : T1(x.first()), _second(x.second()) {}
-
-#if 0
-  compressed_pair_2& operator=(const compressed_pair_2& x) {
-    cout << "assigning compressed pair 2" << endl;
-    T1::operator=(x);
-    _second = x._second;
-    cout << "finished assigning compressed pair 2" << endl;
-    return *this;
-  }
-#endif
-   first_reference       first()       { return *this; }
-   first_const_reference first() const { return *this; }
-
-   second_reference       second()       { return _second; }
-   second_const_reference second() const { return _second; }
-
-   void swap(compressed_pair_2& y)
-   {
-      // no need to swap empty base class:
-      using std::swap;
-      swap(_second, y._second);
-   }
-};
-
-// T1 != T2, both empty
-template <class T1, class T2>
-class compressed_pair_3 : T1, T2
-{
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_3() : T1(), T2() {}
-            compressed_pair_3(first_param_type x, second_param_type y) : T1(x), T2(y) {}
-   template <class A>
-   explicit compressed_pair_3(const A& val)
-   {
-      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), static_cast<T2*>(this));
-   }
-   compressed_pair_3(const ::boost::compressed_pair<T1,T2>& x)
-      : T1(x.first()), T2(x.second()) {}
-
-   first_reference       first()       { return *this; }
-   first_const_reference first() const { return *this; }
-
-   second_reference       second()       { return *this; }
-   second_const_reference second() const { return *this; }
-
-   void swap(compressed_pair_3& y)
-   {
-      // no need to swap empty base classes:
-   }
-};
-
-// T1 == T2, and empty
-template <class T1, class T2>
-class compressed_pair_4 : T1
-{
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_4() : T1() {}
-            compressed_pair_4(first_param_type x, second_param_type y) : T1(x), m_second(y) {}
-   // only one single argument constructor since T1 == T2
-   explicit compressed_pair_4(first_param_type x) : T1(x), m_second(x) {}
-   compressed_pair_4(const ::boost::compressed_pair<T1,T2>& x)
-      : T1(x.first()), m_second(x.second()) {}
-
-   first_reference       first()       { return *this; }
-   first_const_reference first() const { return *this; }
-
-   second_reference       second()       { return m_second; }
-   second_const_reference second() const { return m_second; }
-
-   void swap(compressed_pair_4& y)
-   {
-      // no need to swap empty base classes:
-   }
-private:
-   T2 m_second;
-};
-
-// T1 == T2, not empty
-template <class T1, class T2>
-class compressed_pair_5
-{
-private:
-   T1 _first;
-   T2 _second;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair_5() : _first(), _second() {}
-            compressed_pair_5(first_param_type x, second_param_type y) : _first(x), _second(y) {}
-   // only one single argument constructor since T1 == T2
-   explicit compressed_pair_5(first_param_type x) : _first(x), _second(x) {}
-   compressed_pair_5(const ::boost::compressed_pair<T1,T2>& c) 
-      : _first(c.first()), _second(c.second()) {}
-
-   first_reference       first()       { return _first; }
-   first_const_reference first() const { return _first; }
-
-   second_reference       second()       { return _second; }
-   second_const_reference second() const { return _second; }
-
-   void swap(compressed_pair_5& y)
-   {
-      using std::swap;
-      swap(_first, y._first);
-      swap(_second, y._second);
-   }
-};
-
-template <bool e1, bool e2, bool same>
-struct compressed_pair_chooser
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_0<T1, T2> type;
-   };
-};
-
-template <>
-struct compressed_pair_chooser<false, true, false>
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_1<T1, T2> type;
-   };
-};
-
-template <>
-struct compressed_pair_chooser<true, false, false>
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_2<T1, T2> type;
-   };
-};
-
-template <>
-struct compressed_pair_chooser<true, true, false>
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_3<T1, T2> type;
-   };
-};
-
-template <>
-struct compressed_pair_chooser<true, true, true>
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_4<T1, T2> type;
-   };
-};
-
-template <>
-struct compressed_pair_chooser<false, false, true>
-{
-   template <class T1, class T2>
-   struct rebind
-   {
-      typedef compressed_pair_5<T1, T2> type;
-   };
-};
-
-template <class T1, class T2>
-struct compressed_pair_traits
-{
-private:
-   typedef compressed_pair_chooser<is_empty<T1>::value, is_empty<T2>::value, is_same<T1,T2>::value> chooser;
-   typedef typename chooser::template rebind<T1, T2> bound_type;
-public:
-   typedef typename bound_type::type type;
-};
-
-} // namespace detail
-
-template <class T1, class T2>
-class compressed_pair : public detail::compressed_pair_traits<T1, T2>::type
-{
-private:
-   typedef typename detail::compressed_pair_traits<T1, T2>::type base_type;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair() : base_type() {}
-            compressed_pair(first_param_type x, second_param_type y) : base_type(x, y) {}
-   template <class A>
-   explicit compressed_pair(const A& x) : base_type(x){}
-
-   first_reference       first()       { return base_type::first(); }
-   first_const_reference first() const { return base_type::first(); }
-
-   second_reference       second()       { return base_type::second(); }
-   second_const_reference second() const { return base_type::second(); }
-};
-
-template <class T1, class T2>
-inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
-{
-   x.swap(y);
-}
-
-#else
-// no partial specialisation, no member templates:
-
-template <class T1, class T2>
-class compressed_pair
-{
-private:
-   T1 _first;
-   T2 _second;
-public:
-   typedef T1                                                 first_type;
-   typedef T2                                                 second_type;
-   typedef typename call_traits<first_type>::param_type       first_param_type;
-   typedef typename call_traits<second_type>::param_type      second_param_type;
-   typedef typename call_traits<first_type>::reference        first_reference;
-   typedef typename call_traits<second_type>::reference       second_reference;
-   typedef typename call_traits<first_type>::const_reference  first_const_reference;
-   typedef typename call_traits<second_type>::const_reference second_const_reference;
-
-            compressed_pair() : _first(), _second() {}
-            compressed_pair(first_param_type x, second_param_type y) : _first(x), _second(y) {}
-   explicit compressed_pair(first_param_type x) : _first(x), _second() {}
-   // can't define this in case T1 == T2:
-   // explicit compressed_pair(second_param_type y) : _first(), _second(y) {}
-
-   first_reference       first()       { return _first; }
-   first_const_reference first() const { return _first; }
-
-   second_reference       second()       { return _second; }
-   second_const_reference second() const { return _second; }
-
-   void swap(compressed_pair& y)
-   {
-      using std::swap;
-      swap(_first, y._first);
-      swap(_second, y._second);
-   }
-};
-
-template <class T1, class T2>
-inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
-{
-   x.swap(y);
-}
-
-#endif
-
-} // boost
-
-#endif // BOOST_OB_COMPRESSED_PAIR_HPP
-
-
-
diff --git a/contrib/restricted/boost/boost/utility/detail/minstd_rand.hpp b/contrib/restricted/boost/boost/utility/detail/minstd_rand.hpp
deleted file mode 100644
index 6c858f6bf3..0000000000
--- a/contrib/restricted/boost/boost/utility/detail/minstd_rand.hpp
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED
-#define BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED
-
-// Copyright 2017 Peter Dimov
-//
-// Distributed under the Boost Software License, Version 1.0.
-//
-// An implementation of minstd_rand that does not require
-// the Random library
-
-#include <boost/cstdint.hpp>
-
-namespace boost
-{
-namespace detail
-{
-
-class minstd_rand
-{
-private:
-
-    boost::uint_least32_t x_;
-
-    enum { a = 48271, m = 2147483647 };
-
-public:
-
-    minstd_rand(): x_( 1 )
-    {
-    }
-
-    explicit minstd_rand( boost::uint_least32_t x ): x_( x % m )
-    {
-        if( x_ == 0 )
-        {
-            x_ = 1;
-        }
-    }
-
-    boost::uint_least32_t operator()()
-    {
-        boost::uint_least64_t y = x_;
-
-        y = ( a * y ) % m;
-
-        x_ = static_cast<boost::uint_least32_t>( y );
-
-        return x_;
-    }
-};
-
-} // namespace detail
-} // namespace boost
-
-#endif // #ifndef BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED
diff --git a/contrib/restricted/boost/boost/utility/string_ref.hpp b/contrib/restricted/boost/boost/utility/string_ref.hpp
deleted file mode 100644
index d234e5444a..0000000000
--- a/contrib/restricted/boost/boost/utility/string_ref.hpp
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
-   Copyright (c) Marshall Clow 2012-2015.
-
-   Distributed under the Boost Software License, Version 1.0. (See accompanying
-   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-    For more information, see http://www.boost.org
-
-    Based on the StringRef implementation in LLVM (http://llvm.org) and
-    N3422 by Jeffrey Yasskin
-        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
-
-*/
-
-#ifndef BOOST_STRING_REF_HPP
-#define BOOST_STRING_REF_HPP
-
-#include <boost/config.hpp>
-#include <boost/detail/workaround.hpp>
-#include <boost/utility/string_ref_fwd.hpp>
-#include <boost/throw_exception.hpp>
-
-#include <cstddef>
-#include <stdexcept>
-#include <algorithm>
-#include <iterator>
-#include <string>
-#include <iosfwd>
-
-#if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406)
-// GCC 4.6 cannot handle a defaulted function with noexcept specifier
-#define BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-#endif
-
-namespace boost {
-
-    namespace detail {
-    //  A helper functor because sometimes we don't have lambdas
-        template <typename charT, typename traits>
-        class string_ref_traits_eq {
-        public:
-            string_ref_traits_eq ( charT ch ) : ch_(ch) {}
-            bool operator () ( charT val ) const { return traits::eq ( ch_, val ); }
-            charT ch_;
-            };
-        }
-
-    template<typename charT, typename traits>
-    class basic_string_ref {
-    public:
-        // types
-        typedef charT value_type;
-        typedef const charT* pointer;
-        typedef const charT& reference;
-        typedef const charT& const_reference;
-        typedef pointer const_iterator; // impl-defined
-        typedef const_iterator iterator;
-        typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-        typedef const_reverse_iterator reverse_iterator;
-        typedef std::size_t size_type;
-        typedef std::ptrdiff_t difference_type;
-        static BOOST_CONSTEXPR_OR_CONST size_type npos = size_type(-1);
-
-        // construct/copy
-        BOOST_CONSTEXPR basic_string_ref () BOOST_NOEXCEPT
-            : ptr_(NULL), len_(0) {}
-
-        // by defaulting these functions, basic_string_ref becomes
-        //  trivially copy/move constructible.
-        BOOST_CONSTEXPR basic_string_ref (const basic_string_ref &rhs) BOOST_NOEXCEPT
-#ifndef BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-            = default;
-#else
-            : ptr_(rhs.ptr_), len_(rhs.len_) {}
-#endif
-
-        basic_string_ref& operator=(const basic_string_ref &rhs) BOOST_NOEXCEPT
-#ifndef BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-            = default;
-#else
-            {
-            ptr_ = rhs.ptr_;
-            len_ = rhs.len_;
-            return *this;
-            }
-#endif
-
-        basic_string_ref(const charT* str) BOOST_NOEXCEPT
-            : ptr_(str), len_(traits::length(str)) {}
-
-        template<typename Allocator>
-        basic_string_ref(const std::basic_string<charT, traits, Allocator>& str)
-            : ptr_(str.data()), len_(str.length()) {}
-
-// #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
-//         // Constructing a string_ref from a temporary string is a bad idea
-//         template<typename Allocator>
-//         basic_string_ref(      std::basic_string<charT, traits, Allocator>&&)
-//             = delete;
-// #endif
-
-        BOOST_CONSTEXPR basic_string_ref(const charT* str, size_type len) BOOST_NOEXCEPT
-            : ptr_(str), len_(len) {}
-
-#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
-        template<typename Allocator>
-        explicit operator std::basic_string<charT, traits, Allocator>() const {
-            return std::basic_string<charT, traits, Allocator> ( begin(), end());
-            }
-#endif
-
-        std::basic_string<charT, traits> to_string () const {
-            return std::basic_string<charT, traits> ( begin(), end());
-            }
-
-        // iterators
-        BOOST_CONSTEXPR const_iterator   begin() const { return ptr_; }
-        BOOST_CONSTEXPR const_iterator  cbegin() const { return ptr_; }
-        BOOST_CONSTEXPR const_iterator     end() const { return ptr_ + len_; }
-        BOOST_CONSTEXPR const_iterator    cend() const { return ptr_ + len_; }
-                const_reverse_iterator  rbegin() const { return const_reverse_iterator (end()); }
-                const_reverse_iterator crbegin() const { return const_reverse_iterator (end()); }
-                const_reverse_iterator    rend() const { return const_reverse_iterator (begin()); }
-                const_reverse_iterator   crend() const { return const_reverse_iterator (begin()); }
-
-        // capacity
-        BOOST_CONSTEXPR size_type size()     const { return len_; }
-        BOOST_CONSTEXPR size_type length()   const { return len_; }
-        BOOST_CONSTEXPR size_type max_size() const { return len_; }
-        BOOST_CONSTEXPR bool empty()         const { return len_ == 0; }
-
-        // element access
-        BOOST_CONSTEXPR const charT& operator[](size_type pos) const { return ptr_[pos]; }
-
-        const charT& at(size_t pos) const {
-            if ( pos >= len_ )
-                BOOST_THROW_EXCEPTION( std::out_of_range ( "boost::string_ref::at" ) );
-            return ptr_[pos];
-            }
-
-        BOOST_CONSTEXPR const charT& front() const { return ptr_[0]; }
-        BOOST_CONSTEXPR const charT& back()  const { return ptr_[len_-1]; }
-        BOOST_CONSTEXPR const charT* data()  const { return ptr_; }
-
-        // modifiers
-        void clear() { len_ = 0; }
-        void remove_prefix(size_type n) {
-            if ( n > len_ )
-                n = len_;
-            ptr_ += n;
-            len_ -= n;
-            }
-
-        void remove_suffix(size_type n) {
-            if ( n > len_ )
-                n = len_;
-            len_ -= n;
-            }
-
-
-        // basic_string_ref string operations
-        basic_string_ref substr(size_type pos, size_type n=npos) const {
-            if ( pos > size())
-                BOOST_THROW_EXCEPTION( std::out_of_range ( "string_ref::substr" ) );
-            return basic_string_ref(data() + pos, (std::min)(size() - pos, n));
-            }
-
-        int compare(basic_string_ref x) const {
-            const int cmp = traits::compare ( ptr_, x.ptr_, (std::min)(len_, x.len_));
-            return cmp != 0 ? cmp : ( len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1 );
-            }
-
-        bool starts_with(charT c) const { return !empty() && traits::eq ( c, front()); }
-        bool starts_with(basic_string_ref x) const {
-            return len_ >= x.len_ && traits::compare ( ptr_, x.ptr_, x.len_ ) == 0;
-            }
-
-        bool ends_with(charT c) const { return !empty() && traits::eq ( c, back()); }
-        bool ends_with(basic_string_ref x) const {
-            return len_ >= x.len_ && traits::compare ( ptr_ + len_ - x.len_, x.ptr_, x.len_ ) == 0;
-            }
-
-        size_type find(basic_string_ref s) const {
-            const_iterator iter = std::search ( this->cbegin (), this->cend (),
-                                                s.cbegin (), s.cend (), traits::eq );
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-
-        size_type find(charT c) const {
-            const_iterator iter = std::find_if ( this->cbegin (), this->cend (),
-                                    detail::string_ref_traits_eq<charT, traits> ( c ));
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-
-        size_type rfind(basic_string_ref s) const {
-            const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
-                                                s.crbegin (), s.crend (), traits::eq );
-            return iter == this->crend () ? npos : (std::distance(iter, this->crend()) - s.size());
-            }
-
-        size_type rfind(charT c) const {
-            const_reverse_iterator iter = std::find_if ( this->crbegin (), this->crend (),
-                                    detail::string_ref_traits_eq<charT, traits> ( c ));
-            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
-            }
-
-        size_type find_first_of(charT c) const { return  find (c); }
-        size_type find_last_of (charT c) const { return rfind (c); }
-
-        size_type find_first_of(basic_string_ref s) const {
-            const_iterator iter = std::find_first_of
-                ( this->cbegin (), this->cend (), s.cbegin (), s.cend (), traits::eq );
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-
-        size_type find_last_of(basic_string_ref s) const {
-            const_reverse_iterator iter = std::find_first_of
-                ( this->crbegin (), this->crend (), s.cbegin (), s.cend (), traits::eq );
-            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
-            }
-
-        size_type find_first_not_of(basic_string_ref s) const {
-            const_iterator iter = find_not_of ( this->cbegin (), this->cend (), s );
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-
-        size_type find_first_not_of(charT c) const {
-            for ( const_iterator iter = this->cbegin (); iter != this->cend (); ++iter )
-                if ( !traits::eq ( c, *iter ))
-                    return std::distance ( this->cbegin (), iter );
-            return npos;
-            }
-
-        size_type find_last_not_of(basic_string_ref s) const {
-            const_reverse_iterator iter = find_not_of ( this->crbegin (), this->crend (), s );
-            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
-            }
-
-        size_type find_last_not_of(charT c) const {
-            for ( const_reverse_iterator iter = this->crbegin (); iter != this->crend (); ++iter )
-                if ( !traits::eq ( c, *iter ))
-                    return this->size() - 1 - std::distance(this->crbegin(), iter);
-            return npos;
-            }
-
-    private:
-
-        template <typename Iterator>
-        Iterator find_not_of ( Iterator first, Iterator last, basic_string_ref s ) const {
-            for ( ; first != last ; ++first )
-                if ( 0 == traits::find ( s.ptr_, s.len_, *first ))
-                    return first;
-            return last;
-            }
-
-
-
-        const charT *ptr_;
-        std::size_t len_;
-        };
-
-
-//  Comparison operators
-//  Equality
-    template<typename charT, typename traits>
-    inline bool operator==(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        if ( x.size () != y.size ()) return false;
-        return x.compare(y) == 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator==(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x == basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator==(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) == y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator==(basic_string_ref<charT, traits> x, const charT * y) {
-        return x == basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator==(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) == y;
-        }
-
-//  Inequality
-    template<typename charT, typename traits>
-    inline bool operator!=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        if ( x.size () != y.size ()) return true;
-        return x.compare(y) != 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator!=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x != basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator!=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) != y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator!=(basic_string_ref<charT, traits> x, const charT * y) {
-        return x != basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator!=(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) != y;
-        }
-
-//  Less than
-    template<typename charT, typename traits>
-    inline bool operator<(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        return x.compare(y) < 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator<(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x < basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator<(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) < y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator<(basic_string_ref<charT, traits> x, const charT * y) {
-        return x < basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator<(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) < y;
-        }
-
-//  Greater than
-    template<typename charT, typename traits>
-    inline bool operator>(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        return x.compare(y) > 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator>(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x > basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator>(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) > y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator>(basic_string_ref<charT, traits> x, const charT * y) {
-        return x > basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator>(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) > y;
-        }
-
-//  Less than or equal to
-    template<typename charT, typename traits>
-    inline bool operator<=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        return x.compare(y) <= 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator<=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x <= basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator<=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) <= y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator<=(basic_string_ref<charT, traits> x, const charT * y) {
-        return x <= basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator<=(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) <= y;
-        }
-
-//  Greater than or equal to
-    template<typename charT, typename traits>
-    inline bool operator>=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
-        return x.compare(y) >= 0;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator>=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
-        return x >= basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline bool operator>=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) >= y;
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator>=(basic_string_ref<charT, traits> x, const charT * y) {
-        return x >= basic_string_ref<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline bool operator>=(const charT * x, basic_string_ref<charT, traits> y) {
-        return basic_string_ref<charT, traits>(x) >= y;
-        }
-
-    namespace detail {
-
-        template<class charT, class traits>
-        inline void sr_insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
-            enum { chunk_size = 8 };
-            charT fill_chars[chunk_size];
-            std::fill_n(fill_chars, static_cast< std::size_t >(chunk_size), os.fill());
-            for (; n >= chunk_size && os.good(); n -= chunk_size)
-                os.write(fill_chars, static_cast< std::size_t >(chunk_size));
-            if (n > 0 && os.good())
-                os.write(fill_chars, n);
-            }
-
-        template<class charT, class traits>
-        void sr_insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
-            const std::size_t size = str.size();
-            const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
-            const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
-            if (!align_left) {
-                detail::sr_insert_fill_chars(os, alignment_size);
-                if (os.good())
-                    os.write(str.data(), size);
-                }
-            else {
-                os.write(str.data(), size);
-                if (os.good())
-                    detail::sr_insert_fill_chars(os, alignment_size);
-                }
-            }
-
-        } // namespace detail
-
-    // Inserter
-    template<class charT, class traits>
-    inline std::basic_ostream<charT, traits>&
-    operator<<(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
-        if (os.good()) {
-            const std::size_t size = str.size();
-            const std::size_t w = static_cast< std::size_t >(os.width());
-            if (w <= size)
-                os.write(str.data(), size);
-            else
-                detail::sr_insert_aligned(os, str);
-            os.width(0);
-            }
-        return os;
-        }
-
-#if 0
-    // numeric conversions
-    //
-    //  These are short-term implementations.
-    //  In a production environment, I would rather avoid the copying.
-    //
-    inline int stoi (string_ref str, size_t* idx=0, int base=10) {
-        return std::stoi ( std::string(str), idx, base );
-        }
-
-    inline long stol (string_ref str, size_t* idx=0, int base=10) {
-        return std::stol ( std::string(str), idx, base );
-        }
-
-    inline unsigned long stoul (string_ref str, size_t* idx=0, int base=10) {
-        return std::stoul ( std::string(str), idx, base );
-        }
-
-    inline long long stoll (string_ref str, size_t* idx=0, int base=10) {
-        return std::stoll ( std::string(str), idx, base );
-        }
-
-    inline unsigned long long stoull (string_ref str, size_t* idx=0, int base=10) {
-        return std::stoull ( std::string(str), idx, base );
-        }
-
-    inline float stof (string_ref str, size_t* idx=0) {
-        return std::stof ( std::string(str), idx );
-        }
-
-    inline double stod (string_ref str, size_t* idx=0) {
-        return std::stod ( std::string(str), idx );
-        }
-
-    inline long double stold (string_ref str, size_t* idx=0)  {
-        return std::stold ( std::string(str), idx );
-        }
-
-    inline int  stoi (wstring_ref str, size_t* idx=0, int base=10) {
-        return std::stoi ( std::wstring(str), idx, base );
-        }
-
-    inline long stol (wstring_ref str, size_t* idx=0, int base=10) {
-        return std::stol ( std::wstring(str), idx, base );
-        }
-
-    inline unsigned long stoul (wstring_ref str, size_t* idx=0, int base=10) {
-        return std::stoul ( std::wstring(str), idx, base );
-        }
-
-    inline long long stoll (wstring_ref str, size_t* idx=0, int base=10) {
-        return std::stoll ( std::wstring(str), idx, base );
-        }
-
-    inline unsigned long long stoull (wstring_ref str, size_t* idx=0, int base=10) {
-        return std::stoull ( std::wstring(str), idx, base );
-        }
-
-    inline float  stof (wstring_ref str, size_t* idx=0) {
-        return std::stof ( std::wstring(str), idx );
-        }
-
-    inline double stod (wstring_ref str, size_t* idx=0) {
-        return std::stod ( std::wstring(str), idx );
-        }
-
-    inline long double stold (wstring_ref str, size_t* idx=0) {
-        return std::stold ( std::wstring(str), idx );
-        }
-#endif
-
-}
-
-#if 0
-namespace std {
-    // Hashing
-    template<> struct hash<boost::string_ref>;
-    template<> struct hash<boost::u16string_ref>;
-    template<> struct hash<boost::u32string_ref>;
-    template<> struct hash<boost::wstring_ref>;
-}
-#endif
-
-#endif
diff --git a/contrib/restricted/boost/boost/utility/string_view.hpp b/contrib/restricted/boost/boost/utility/string_view.hpp
deleted file mode 100644
index 09d52d2d34..0000000000
--- a/contrib/restricted/boost/boost/utility/string_view.hpp
+++ /dev/null
@@ -1,690 +0,0 @@
-/*
-   Copyright (c) Marshall Clow 2012-2015.
-   Copyright (c) Beman Dawes 2015
-
-   Distributed under the Boost Software License, Version 1.0. (See accompanying
-   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-    For more information, see http://www.boost.org
-
-    Based on the StringRef implementation in LLVM (http://llvm.org) and
-    N3422 by Jeffrey Yasskin
-        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
-    Updated July 2015 to reflect the Library Fundamentals TS
-        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html
-*/
-
-#ifndef BOOST_STRING_VIEW_HPP
-#define BOOST_STRING_VIEW_HPP
-
-#include <boost/config.hpp>
-#include <boost/detail/workaround.hpp>
-#include <boost/utility/string_view_fwd.hpp>
-#include <boost/throw_exception.hpp>
-
-#include <cstddef>
-#include <stdexcept>
-#include <algorithm>
-#include <iterator>
-#include <string>
-#include <cstring>
-#include <iosfwd>
-
-#if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406)
-// GCC 4.6 cannot handle a defaulted function with noexcept specifier
-#define BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-#endif
-
-namespace boost {
-
-    namespace detail {
-    //  A helper functor because sometimes we don't have lambdas
-        template <typename charT, typename traits>
-        class string_view_traits_eq {
-        public:
-            string_view_traits_eq ( charT ch ) : ch_(ch) {}
-            bool operator()( charT val ) const { return traits::eq (ch_, val); }
-            charT ch_;
-            };
-        }
-
-    template<typename charT, typename traits>  // traits defaulted in string_view_fwd.hpp
-    class basic_string_view {
-    public:
-      // types
-      typedef traits                                traits_type;
-      typedef charT                                 value_type;
-      typedef charT*                                pointer;
-      typedef const charT*                          const_pointer;
-      typedef charT&                                reference;
-      typedef const charT&                          const_reference;
-      typedef const_pointer                         const_iterator; // impl-defined
-      typedef const_iterator                        iterator;
-      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-      typedef const_reverse_iterator                reverse_iterator;
-      typedef std::size_t                           size_type;
-      typedef std::ptrdiff_t                        difference_type;
-      static BOOST_CONSTEXPR_OR_CONST size_type     npos = size_type(-1);
-
-      // construct/copy
-      BOOST_CONSTEXPR basic_string_view() BOOST_NOEXCEPT
-        : ptr_(NULL), len_(0) {}
-
-      // by defaulting these functions, basic_string_ref becomes
-      //  trivially copy/move constructible.
-      BOOST_CONSTEXPR basic_string_view(const basic_string_view &rhs) BOOST_NOEXCEPT
-#ifndef BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-        = default;
-#else
-        : ptr_(rhs.ptr_), len_(rhs.len_) {}
-#endif
-
-      basic_string_view& operator=(const basic_string_view &rhs) BOOST_NOEXCEPT
-#ifndef BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
-            = default;
-#else
-        {
-        ptr_ = rhs.ptr_;
-        len_ = rhs.len_;
-        return *this;
-        }
-#endif
-
-      template<typename Allocator>
-        basic_string_view(const std::basic_string<charT, traits, Allocator>& str) BOOST_NOEXCEPT
-          : ptr_(str.data()), len_(str.length()) {}
-
-// #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
-//       // Constructing a string_view from a temporary string is a bad idea
-//       template<typename Allocator>
-//         basic_string_view(      std::basic_string<charT, traits, Allocator>&&)
-//           = delete;
-// #endif
-
-      BOOST_CONSTEXPR basic_string_view(const charT* str)
-        : ptr_(str), len_(traits::length(str)) {}
-
-      BOOST_CONSTEXPR basic_string_view(const charT* str, size_type len)
-        : ptr_(str), len_(len) {}
-
-        // iterators
-        BOOST_CONSTEXPR const_iterator   begin() const BOOST_NOEXCEPT { return ptr_; }
-        BOOST_CONSTEXPR const_iterator  cbegin() const BOOST_NOEXCEPT { return ptr_; }
-        BOOST_CONSTEXPR const_iterator     end() const BOOST_NOEXCEPT { return ptr_ + len_; }
-        BOOST_CONSTEXPR const_iterator    cend() const BOOST_NOEXCEPT { return ptr_ + len_; }
-                const_reverse_iterator  rbegin() const BOOST_NOEXCEPT { return const_reverse_iterator(end()); }
-                const_reverse_iterator crbegin() const BOOST_NOEXCEPT { return const_reverse_iterator(end()); }
-                const_reverse_iterator    rend() const BOOST_NOEXCEPT { return const_reverse_iterator(begin()); }
-                const_reverse_iterator   crend() const BOOST_NOEXCEPT { return const_reverse_iterator(begin()); }
-
-        // capacity
-        BOOST_CONSTEXPR size_type size()     const BOOST_NOEXCEPT { return len_; }
-        BOOST_CONSTEXPR size_type length()   const BOOST_NOEXCEPT { return len_; }
-        BOOST_CONSTEXPR size_type max_size() const BOOST_NOEXCEPT { return len_; }
-        BOOST_CONSTEXPR bool empty()         const BOOST_NOEXCEPT { return len_ == 0; }
-
-        // element access
-        BOOST_CONSTEXPR const_reference operator[](size_type pos) const BOOST_NOEXCEPT { return ptr_[pos]; }
-
-        BOOST_CONSTEXPR const_reference at(size_t pos) const {
-            return pos >= len_ ? BOOST_THROW_EXCEPTION(std::out_of_range("boost::string_view::at")), ptr_[0] : ptr_[pos];
-            }
-
-        BOOST_CONSTEXPR const_reference front() const                { return ptr_[0]; }
-        BOOST_CONSTEXPR const_reference back()  const                { return ptr_[len_-1]; }
-        BOOST_CONSTEXPR const_pointer data()    const BOOST_NOEXCEPT { return ptr_; }
-
-        // modifiers
-        void clear() BOOST_NOEXCEPT { len_ = 0; }          // Boost extension
-
-        BOOST_CXX14_CONSTEXPR void remove_prefix(size_type n) {
-            if ( n > len_ )
-                n = len_;
-            ptr_ += n;
-            len_ -= n;
-            }
-
-        BOOST_CXX14_CONSTEXPR void remove_suffix(size_type n) {
-            if ( n > len_ )
-                n = len_;
-            len_ -= n;
-            }
-
-        BOOST_CXX14_CONSTEXPR void swap(basic_string_view& s) BOOST_NOEXCEPT {
-            std::swap(ptr_, s.ptr_);
-            std::swap(len_, s.len_);
-            }
-
-        // basic_string_view string operations
-#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
-        template<typename Allocator>
-        explicit operator std::basic_string<charT, traits, Allocator>() const {
-            return std::basic_string<charT, traits, Allocator>(begin(), end());
-            }
-#endif
-
-#ifndef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
-        template<typename Allocator = std::allocator<charT> >
-        std::basic_string<charT, traits, Allocator> to_string(const Allocator& a = Allocator()) const {
-            return std::basic_string<charT, traits, Allocator>(begin(), end(), a);
-            }
-#else
-        std::basic_string<charT, traits> to_string() const {
-            return std::basic_string<charT, traits>(begin(), end());
-            }
-
-        template<typename Allocator>
-        std::basic_string<charT, traits, Allocator> to_string(const Allocator& a) const {
-            return std::basic_string<charT, traits, Allocator>(begin(), end(), a);
-            }
-#endif
-
-        size_type copy(charT* s, size_type n, size_type pos=0) const {
-            if (pos > size())
-                BOOST_THROW_EXCEPTION(std::out_of_range("string_view::copy" ));
-            size_type rlen = (std::min)(n, len_ - pos);
-    		traits_type::copy(s, data() + pos, rlen);
-            return rlen;
-            }
-
-        BOOST_CXX14_CONSTEXPR basic_string_view substr(size_type pos, size_type n=npos) const {
-            if ( pos > size())
-                BOOST_THROW_EXCEPTION( std::out_of_range ( "string_view::substr" ) );
-            return basic_string_view(data() + pos, (std::min)(size() - pos, n));
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(basic_string_view x) const BOOST_NOEXCEPT {
-            const int cmp = traits::compare(ptr_, x.ptr_, (std::min)(len_, x.len_));
-            return cmp != 0 ? cmp : (len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1);
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1, basic_string_view x)
-          const BOOST_NOEXCEPT {
-            return substr(pos1, n1).compare(x);
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1,
-          basic_string_view x, size_type pos2, size_type n2) const {
-            return substr(pos1, n1).compare(x.substr(pos2, n2));
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(const charT* x) const {
-            return compare(basic_string_view(x));
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1, const charT* x) const {
-            return substr(pos1, n1).compare(basic_string_view(x));
-            }
-
-        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1,
-          const charT* x, size_type n2) const {
-            return substr(pos1, n1).compare(basic_string_view(x, n2));
-            }
-
-        //  Searches
-        BOOST_CONSTEXPR bool starts_with(charT c) const BOOST_NOEXCEPT {              // Boost extension
-            return !empty() && traits::eq(c, front());
-            }
-
-        BOOST_CONSTEXPR bool starts_with(basic_string_view x) const BOOST_NOEXCEPT {  // Boost extension
-            return len_ >= x.len_ && traits::compare(ptr_, x.ptr_, x.len_) == 0;
-            }
-
-        BOOST_CONSTEXPR bool ends_with(charT c) const BOOST_NOEXCEPT {                // Boost extension
-            return !empty() && traits::eq(c, back());
-            }
-
-        BOOST_CONSTEXPR bool ends_with(basic_string_view x) const BOOST_NOEXCEPT {    // Boost extension
-            return len_ >= x.len_ &&
-               traits::compare(ptr_ + len_ - x.len_, x.ptr_, x.len_) == 0;
-            }
-
-        //  find
-        BOOST_CXX14_CONSTEXPR size_type find(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
-            if (pos > size())
-              return npos;
-            if (s.empty())
-              return pos;
-            const_iterator iter = std::search(this->cbegin() + pos, this->cend(),
-                                               s.cbegin (), s.cend (), traits::eq);
-            return iter == this->cend () ? npos : std::distance(this->cbegin (), iter);
-            }
-        BOOST_CXX14_CONSTEXPR size_type find(charT c, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return find(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find(basic_string_view(s), pos); }
-
-        //  rfind
-        BOOST_CXX14_CONSTEXPR size_type rfind(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
-            if (len_ < s.len_)
-              return npos;
-            if (pos > len_ - s.len_)
-              pos = len_ - s.len_;
-            if (s.len_ == 0u)     // an empty string is always found
-              return pos;
-            for (const charT* cur = ptr_ + pos; ; --cur) {
-                if (traits::compare(cur, s.ptr_, s.len_) == 0)
-                  return cur - ptr_;
-                if (cur == ptr_)
-                  return npos;
-                };
-            }
-        BOOST_CXX14_CONSTEXPR size_type rfind(charT c, size_type pos = npos) const BOOST_NOEXCEPT
-            { return rfind(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type rfind(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return rfind(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type rfind(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
-            { return rfind(basic_string_view(s), pos); }
-
-        //  find_first_of
-        BOOST_CXX14_CONSTEXPR size_type find_first_of(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
-            if (pos >= len_ || s.len_ == 0)
-              return npos;
-            const_iterator iter = std::find_first_of
-                (this->cbegin () + pos, this->cend (), s.cbegin (), s.cend (), traits::eq);
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-        BOOST_CXX14_CONSTEXPR size_type find_first_of(charT c, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find_first_of(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_first_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return find_first_of(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_first_of(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find_first_of(basic_string_view(s), pos); }
-
-        //  find_last_of
-        BOOST_CXX14_CONSTEXPR size_type find_last_of(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
-            if (s.len_ == 0u)
-              return npos;
-            if (pos >= len_)
-              pos = 0;
-            else
-              pos = len_ - (pos+1);
-            const_reverse_iterator iter = std::find_first_of
-                ( this->crbegin () + pos, this->crend (), s.cbegin (), s.cend (), traits::eq );
-            return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter);
-            }
-        BOOST_CXX14_CONSTEXPR size_type find_last_of(charT c, size_type pos = npos) const BOOST_NOEXCEPT
-            { return find_last_of(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_last_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return find_last_of(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_last_of(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
-            { return find_last_of(basic_string_view(s), pos); }
-
-        //  find_first_not_of
-        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
-            if (pos >= len_)
-              return npos;
-            if (s.len_ == 0)
-              return pos;
-            const_iterator iter = find_not_of ( this->cbegin () + pos, this->cend (), s );
-            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
-            }
-        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(charT c, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find_first_not_of(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return find_first_not_of(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
-            { return find_first_not_of(basic_string_view(s), pos); }
-
-        //  find_last_not_of
-        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
-            if (pos >= len_)
-              pos = len_ - 1;
-            if (s.len_ == 0u)
-              return pos;
-            pos = len_ - (pos+1);
-            const_reverse_iterator iter = find_not_of ( this->crbegin () + pos, this->crend (), s );
-            return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
-            }
-        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(charT c, size_type pos = npos) const BOOST_NOEXCEPT
-            { return find_last_not_of(basic_string_view(&c, 1), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
-            { return find_last_not_of(basic_string_view(s, n), pos); }
-        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
-            { return find_last_not_of(basic_string_view(s), pos); }
-
-    private:
-        template <typename r_iter>
-        size_type reverse_distance(r_iter first, r_iter last) const BOOST_NOEXCEPT {
-        // Portability note here: std::distance is not NOEXCEPT, but calling it with a string_view::reverse_iterator will not throw.
-            return len_ - 1 - std::distance ( first, last );
-            }
-
-        template <typename Iterator>
-        Iterator find_not_of(Iterator first, Iterator last, basic_string_view s) const BOOST_NOEXCEPT {
-            for (; first != last ; ++first)
-                if ( 0 == traits::find(s.ptr_, s.len_, *first))
-                    return first;
-            return last;
-            }
-
-        const charT *ptr_;
-        std::size_t len_;
-        };
-
-
-//  Comparison operators
-//  Equality
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        if (x.size () != y.size ()) return false;
-        return x.compare(y) == 0;
-        }
-
-//  Inequality
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        if ( x.size () != y.size ()) return true;
-        return x.compare(y) != 0;
-        }
-
-//  Less than
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
-                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return x.compare(y) < 0;
-        }
-
-//  Greater than
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
-                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return x.compare(y) > 0;
-        }
-
-//  Less than or equal to
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return x.compare(y) <= 0;
-        }
-
-//  Greater than or equal to
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return x.compare(y) >= 0;
-        }
-
-// "sufficient additional overloads of comparison functions"
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
-                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x == basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator==(const std::basic_string<charT, traits, Allocator> & x,
-                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) == y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
-                                              const charT * y) BOOST_NOEXCEPT {
-        return x == basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator==(const charT * x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) == y;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
-                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x != basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator!=(const std::basic_string<charT, traits, Allocator> & x,
-                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) != y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
-                           const charT * y) BOOST_NOEXCEPT {
-        return x != basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator!=(const charT * x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) != y;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
-                    const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x < basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator<(const std::basic_string<charT, traits, Allocator> & x,
-                                basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) < y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
-                          const charT * y) BOOST_NOEXCEPT {
-        return x < basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<(const charT * x,
-                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) < y;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
-                    const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x > basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator>(const std::basic_string<charT, traits, Allocator> & x,
-                                basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) > y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
-                          const charT * y) BOOST_NOEXCEPT {
-        return x > basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>(const charT * x,
-                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) > y;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
-                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x <= basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator<=(const std::basic_string<charT, traits, Allocator> & x,
-                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) <= y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
-                           const charT * y) BOOST_NOEXCEPT {
-        return x <= basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator<=(const charT * x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) <= y;
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
-                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
-        return x >= basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits, typename Allocator>
-    inline BOOST_CXX14_CONSTEXPR bool operator>=(const std::basic_string<charT, traits, Allocator> & x,
-                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) >= y;
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
-                           const charT * y) BOOST_NOEXCEPT {
-        return x >= basic_string_view<charT, traits>(y);
-        }
-
-    template<typename charT, typename traits>
-    inline BOOST_CXX14_CONSTEXPR bool operator>=(const charT * x,
-                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
-        return basic_string_view<charT, traits>(x) >= y;
-        }
-
-    namespace detail {
-
-        template<class charT, class traits>
-        inline void sv_insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
-            enum { chunk_size = 8 };
-            charT fill_chars[chunk_size];
-            std::fill_n(fill_chars, static_cast< std::size_t >(chunk_size), os.fill());
-            for (; n >= chunk_size && os.good(); n -= chunk_size)
-                os.write(fill_chars, static_cast< std::size_t >(chunk_size));
-            if (n > 0 && os.good())
-                os.write(fill_chars, n);
-            }
-
-        template<class charT, class traits>
-        void sv_insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_view<charT,traits>& str) {
-            const std::size_t size = str.size();
-            const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
-            const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
-            if (!align_left) {
-                detail::sv_insert_fill_chars(os, alignment_size);
-                if (os.good())
-                    os.write(str.data(), size);
-                }
-            else {
-                os.write(str.data(), size);
-                if (os.good())
-                    detail::sv_insert_fill_chars(os, alignment_size);
-                }
-            }
-
-        } // namespace detail
-
-    // Inserter
-    template<class charT, class traits>
-    inline std::basic_ostream<charT, traits>&
-    operator<<(std::basic_ostream<charT, traits>& os,
-      const basic_string_view<charT,traits>& str) {
-        if (os.good()) {
-            const std::size_t size = str.size();
-            const std::size_t w = static_cast< std::size_t >(os.width());
-            if (w <= size)
-                os.write(str.data(), size);
-            else
-                detail::sv_insert_aligned(os, str);
-            os.width(0);
-            }
-        return os;
-        }
-
-#if 0
-    // numeric conversions
-    //
-    //  These are short-term implementations.
-    //  In a production environment, I would rather avoid the copying.
-    //
-    inline int stoi (string_view str, size_t* idx=0, int base=10) {
-        return std::stoi ( std::string(str), idx, base );
-        }
-
-    inline long stol (string_view str, size_t* idx=0, int base=10) {
-        return std::stol ( std::string(str), idx, base );
-        }
-
-    inline unsigned long stoul (string_view str, size_t* idx=0, int base=10) {
-        return std::stoul ( std::string(str), idx, base );
-        }
-
-    inline long long stoll (string_view str, size_t* idx=0, int base=10) {
-        return std::stoll ( std::string(str), idx, base );
-        }
-
-    inline unsigned long long stoull (string_view str, size_t* idx=0, int base=10) {
-        return std::stoull ( std::string(str), idx, base );
-        }
-
-    inline float stof (string_view str, size_t* idx=0) {
-        return std::stof ( std::string(str), idx );
-        }
-
-    inline double stod (string_view str, size_t* idx=0) {
-        return std::stod ( std::string(str), idx );
-        }
-
-    inline long double stold (string_view str, size_t* idx=0)  {
-        return std::stold ( std::string(str), idx );
-        }
-
-    inline int  stoi (wstring_view str, size_t* idx=0, int base=10) {
-        return std::stoi ( std::wstring(str), idx, base );
-        }
-
-    inline long stol (wstring_view str, size_t* idx=0, int base=10) {
-        return std::stol ( std::wstring(str), idx, base );
-        }
-
-    inline unsigned long stoul (wstring_view str, size_t* idx=0, int base=10) {
-        return std::stoul ( std::wstring(str), idx, base );
-        }
-
-    inline long long stoll (wstring_view str, size_t* idx=0, int base=10) {
-        return std::stoll ( std::wstring(str), idx, base );
-        }
-
-    inline unsigned long long stoull (wstring_view str, size_t* idx=0, int base=10) {
-        return std::stoull ( std::wstring(str), idx, base );
-        }
-
-    inline float  stof (wstring_view str, size_t* idx=0) {
-        return std::stof ( std::wstring(str), idx );
-        }
-
-    inline double stod (wstring_view str, size_t* idx=0) {
-        return std::stod ( std::wstring(str), idx );
-        }
-
-    inline long double stold (wstring_view str, size_t* idx=0) {
-        return std::stold ( std::wstring(str), idx );
-        }
-#endif
-
-}
-
-#if 0
-namespace std {
-    // Hashing
-    template<> struct hash<boost::string_view>;
-    template<> struct hash<boost::u16string_view>;
-    template<> struct hash<boost::u32string_view>;
-    template<> struct hash<boost::wstring_view>;
-}
-#endif
-
-#endif
diff --git a/contrib/restricted/boost/boost/utility/typed_in_place_factory.hpp b/contrib/restricted/boost/boost/utility/typed_in_place_factory.hpp
deleted file mode 100644
index 833a34692d..0000000000
--- a/contrib/restricted/boost/boost/utility/typed_in_place_factory.hpp
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
-// Copyright (C) 2007, Tobias Schwinger.
-//
-// Use, modification, and distribution is subject to the Boost Software
-// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt)
-//
-// See http://www.boost.org/libs/optional for documentation.
-//
-// You are welcome to contact the author at:
-//  fernando_cacciola@hotmail.com
-//
-#ifndef BOOST_UTILITY_TYPED_INPLACE_FACTORY_04APR2007_HPP
-#ifndef BOOST_PP_IS_ITERATING
-
-#include <boost/utility/detail/in_place_factory_prefix.hpp>
-
-namespace boost {
-
-class typed_in_place_factory_base {} ;
-
-#define  BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY)
-#define  BOOST_PP_FILENAME_1 <boost/utility/typed_in_place_factory.hpp>
-#include BOOST_PP_ITERATE()
-
-} // namespace boost
-
-#include <boost/utility/detail/in_place_factory_suffix.hpp>
-
-#define BOOST_UTILITY_TYPED_INPLACE_FACTORY_04APR2007_HPP
-#else 
-#define N BOOST_PP_ITERATION()
-
-template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N,class A) >
-class BOOST_PP_CAT(typed_in_place_factory,N) 
-  : 
-  public typed_in_place_factory_base
-{
-public:
-
-  typedef T value_type;
-
-  explicit BOOST_PP_CAT(typed_in_place_factory,N) 
-      ( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
-#if N > 0
-    : BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _)
-#endif
-  {}
-
-  void* apply (void* address) const
-  {
-    return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) );
-  }
-
-  void* apply (void* address, std::size_t n) const
-  {
-    for(void* next = address = this->apply(address); !! --n;)
-      this->apply(next = static_cast<char *>(next) + sizeof(T));
-    return address; 
-  }
-
-  BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _)
-};
-
-template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N, class A) >
-inline BOOST_PP_CAT(typed_in_place_factory,N)<
-    T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) >
-in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
-{
-  return BOOST_PP_CAT(typed_in_place_factory,N)< 
-      T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) >( BOOST_PP_ENUM_PARAMS(N, a) );
-}
-
-#undef N
-#endif
-#endif
-
diff --git a/contrib/restricted/boost/utility/CMakeLists.txt b/contrib/restricted/boost/utility/CMakeLists.txt
new file mode 100644
index 0000000000..f017d73737
--- /dev/null
+++ b/contrib/restricted/boost/utility/CMakeLists.txt
@@ -0,0 +1,23 @@
+
+# This file was gererated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_library(restricted-boost-utility INTERFACE)
+target_include_directories(restricted-boost-utility INTERFACE
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/boost/utility/include
+)
+target_link_libraries(restricted-boost-utility INTERFACE
+  contrib-libs-cxxsupp
+  yutil
+  restricted-boost-config
+  restricted-boost-core
+  restricted-boost-preprocessor
+  restricted-boost-static_assert
+  restricted-boost-throw_exception
+  restricted-boost-type_traits
+)
diff --git a/contrib/restricted/boost/boost/call_traits.hpp b/contrib/restricted/boost/utility/include/boost/call_traits.hpp
index 2c1328e94d..2c1328e94d 100644
--- a/contrib/restricted/boost/boost/call_traits.hpp
+++ b/contrib/restricted/boost/utility/include/boost/call_traits.hpp
diff --git a/contrib/restricted/boost/boost/compressed_pair.hpp b/contrib/restricted/boost/utility/include/boost/compressed_pair.hpp
index a7be0f2ba2..a7be0f2ba2 100644
--- a/contrib/restricted/boost/boost/compressed_pair.hpp
+++ b/contrib/restricted/boost/utility/include/boost/compressed_pair.hpp
diff --git a/contrib/restricted/boost/boost/detail/call_traits.hpp b/contrib/restricted/boost/utility/include/boost/detail/call_traits.hpp
index 36dea0003a..36dea0003a 100644
--- a/contrib/restricted/boost/boost/detail/call_traits.hpp
+++ b/contrib/restricted/boost/utility/include/boost/detail/call_traits.hpp
diff --git a/contrib/restricted/boost/boost/detail/compressed_pair.hpp b/contrib/restricted/boost/utility/include/boost/detail/compressed_pair.hpp
index 5dc21e23e6..5dc21e23e6 100644
--- a/contrib/restricted/boost/boost/detail/compressed_pair.hpp
+++ b/contrib/restricted/boost/utility/include/boost/detail/compressed_pair.hpp
diff --git a/contrib/restricted/boost/boost/operators.hpp b/contrib/restricted/boost/utility/include/boost/operators.hpp
index 156571c1a9..156571c1a9 100644
--- a/contrib/restricted/boost/boost/operators.hpp
+++ b/contrib/restricted/boost/utility/include/boost/operators.hpp
diff --git a/contrib/restricted/boost/boost/operators_v1.hpp b/contrib/restricted/boost/utility/include/boost/operators_v1.hpp
index e1c53e8703..e1c53e8703 100644
--- a/contrib/restricted/boost/boost/operators_v1.hpp
+++ b/contrib/restricted/boost/utility/include/boost/operators_v1.hpp
diff --git a/contrib/restricted/boost/boost/utility.hpp b/contrib/restricted/boost/utility/include/boost/utility.hpp
index 5ac9ecbd85..5ac9ecbd85 100644
--- a/contrib/restricted/boost/boost/utility.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility.hpp
diff --git a/contrib/restricted/boost/boost/utility/base_from_member.hpp b/contrib/restricted/boost/utility/include/boost/utility/base_from_member.hpp
index 604541d19a..604541d19a 100644
--- a/contrib/restricted/boost/boost/utility/base_from_member.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/base_from_member.hpp
diff --git a/contrib/restricted/boost/boost/utility/binary.hpp b/contrib/restricted/boost/utility/include/boost/utility/binary.hpp
index 8cef1468e5..8cef1468e5 100644
--- a/contrib/restricted/boost/boost/utility/binary.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/binary.hpp
diff --git a/contrib/restricted/boost/boost/utility/compare_pointees.hpp b/contrib/restricted/boost/utility/include/boost/utility/compare_pointees.hpp
index 5ab21cdee2..5ab21cdee2 100644
--- a/contrib/restricted/boost/boost/utility/compare_pointees.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/compare_pointees.hpp
diff --git a/contrib/restricted/boost/boost/utility/detail/in_place_factory_prefix.hpp b/contrib/restricted/boost/utility/include/boost/utility/detail/in_place_factory_prefix.hpp
index afd76b5a85..afd76b5a85 100644
--- a/contrib/restricted/boost/boost/utility/detail/in_place_factory_prefix.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/detail/in_place_factory_prefix.hpp
diff --git a/contrib/restricted/boost/boost/utility/detail/in_place_factory_suffix.hpp b/contrib/restricted/boost/utility/include/boost/utility/detail/in_place_factory_suffix.hpp
index 58f48c708c..58f48c708c 100644
--- a/contrib/restricted/boost/boost/utility/detail/in_place_factory_suffix.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/detail/in_place_factory_suffix.hpp
diff --git a/contrib/restricted/boost/boost/utility/detail/result_of_iterate.hpp b/contrib/restricted/boost/utility/include/boost/utility/detail/result_of_iterate.hpp
index d6538447b1..d6538447b1 100644
--- a/contrib/restricted/boost/boost/utility/detail/result_of_iterate.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/detail/result_of_iterate.hpp
diff --git a/contrib/restricted/boost/boost/utility/identity_type.hpp b/contrib/restricted/boost/utility/include/boost/utility/identity_type.hpp
index 4a1f6c4de5..4a1f6c4de5 100644
--- a/contrib/restricted/boost/boost/utility/identity_type.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/identity_type.hpp
diff --git a/contrib/restricted/boost/boost/utility/in_place_factory.hpp b/contrib/restricted/boost/utility/include/boost/utility/in_place_factory.hpp
index 1a62ace10a..1a62ace10a 100644
--- a/contrib/restricted/boost/boost/utility/in_place_factory.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/in_place_factory.hpp
diff --git a/contrib/restricted/boost/boost/utility/result_of.hpp b/contrib/restricted/boost/utility/include/boost/utility/result_of.hpp
index 2b652ba0ca..2b652ba0ca 100644
--- a/contrib/restricted/boost/boost/utility/result_of.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/result_of.hpp
diff --git a/contrib/restricted/boost/boost/utility/string_ref_fwd.hpp b/contrib/restricted/boost/utility/include/boost/utility/string_ref_fwd.hpp
index f58b98c1fb..f58b98c1fb 100644
--- a/contrib/restricted/boost/boost/utility/string_ref_fwd.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/string_ref_fwd.hpp
diff --git a/contrib/restricted/boost/boost/utility/string_view_fwd.hpp b/contrib/restricted/boost/utility/include/boost/utility/string_view_fwd.hpp
index dbda0de46a..dbda0de46a 100644
--- a/contrib/restricted/boost/boost/utility/string_view_fwd.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/string_view_fwd.hpp
diff --git a/contrib/restricted/boost/boost/utility/value_init.hpp b/contrib/restricted/boost/utility/include/boost/utility/value_init.hpp
index 9d8de70733..9d8de70733 100644
--- a/contrib/restricted/boost/boost/utility/value_init.hpp
+++ b/contrib/restricted/boost/utility/include/boost/utility/value_init.hpp