add boost on mac

macx64/include/boost/lexical_cast/lexical_cast_old.hpp

@@ -0,0 +1,175 @@
+// Copyright Kevlin Henney, 2000-2005.
+// Copyright Alexander Nasonov, 2006-2010.
+// Copyright Antony Polukhin, 2011-2019.
+//
+// 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)
+//
+// what:  lexical_cast custom keyword cast
+// who:   contributed by Kevlin Henney,
+//        enhanced with contributions from Terje Slettebo,
+//        with additional fixes and suggestions from Gennaro Prota,
+//        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
+//        Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
+//        Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
+// when:  November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
+
+#ifndef BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
+#define BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
+
+#include <boost/config.hpp>
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#   pragma once
+#endif
+
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
+#define BOOST_LCAST_NO_WCHAR_T
+#endif
+
+#include <climits>
+#include <cstddef>
+#include <string>
+#include <cstring>
+#include <cstdio>
+#include <boost/limits.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/detail/lcast_precision.hpp>
+#include <boost/detail/workaround.hpp>
+
+#ifdef BOOST_NO_STRINGSTREAM
+#include <strstream>
+#else
+#include <sstream>
+#endif
+
+#include <boost/lexical_cast/bad_lexical_cast.hpp>
+#include <boost/lexical_cast/detail/widest_char.hpp>
+
+namespace boost {
+    namespace detail
+    {
+
+        // selectors for choosing stream character type
+        template<typename Type>
+        struct stream_char
+        {
+            typedef char type;
+        };
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#ifndef BOOST_NO_INTRINSIC_WCHAR_T
+        template<>
+        struct stream_char<wchar_t>
+        {
+            typedef wchar_t type;
+        };
+#endif
+
+        template<>
+        struct stream_char<wchar_t *>
+        {
+            typedef wchar_t type;
+        };
+
+        template<>
+        struct stream_char<const wchar_t *>
+        {
+            typedef wchar_t type;
+        };
+
+        template<>
+        struct stream_char<std::wstring>
+        {
+            typedef wchar_t type;
+        };
+#endif
+
+        // stream wrapper for handling lexical conversions
+        template<typename Target, typename Source, typename Traits>
+        class lexical_stream
+        {
+        private:
+            typedef typename widest_char<
+                typename stream_char<Target>::type,
+                typename stream_char<Source>::type>::type char_type;
+
+            typedef Traits traits_type;
+
+        public:
+            lexical_stream(char_type* = 0, char_type* = 0)
+            {
+                stream.unsetf(std::ios::skipws);
+                lcast_set_precision(stream, static_cast<Source*>(0), static_cast<Target*>(0) );
+            }
+            ~lexical_stream()
+            {
+                #if defined(BOOST_NO_STRINGSTREAM)
+                stream.freeze(false);
+                #endif
+            }
+            bool operator<<(const Source &input)
+            {
+                return !(stream << input).fail();
+            }
+            template<typename InputStreamable>
+            bool operator>>(InputStreamable &output)
+            {
+                return !is_pointer<InputStreamable>::value &&
+                       stream >> output &&
+                       stream.get() == traits_type::eof();
+            }
+
+            bool operator>>(std::string &output)
+            {
+                #if defined(BOOST_NO_STRINGSTREAM)
+                stream << '\0';
+                #endif
+                stream.str().swap(output);
+                return true;
+            }
+            #ifndef BOOST_LCAST_NO_WCHAR_T
+            bool operator>>(std::wstring &output)
+            {
+                stream.str().swap(output);
+                return true;
+            }
+            #endif
+
+        private:
+            #if defined(BOOST_NO_STRINGSTREAM)
+            std::strstream stream;
+            #elif defined(BOOST_NO_STD_LOCALE)
+            std::stringstream stream;
+            #else
+            std::basic_stringstream<char_type,traits_type> stream;
+            #endif
+        };
+    }
+
+    // call-by-value fallback version (deprecated)
+
+    template<typename Target, typename Source>
+    Target lexical_cast(Source arg)
+    {
+        typedef typename detail::widest_char< 
+            BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type 
+          , BOOST_DEDUCED_TYPENAME detail::stream_char<Source>::type 
+        >::type char_type; 
+
+        typedef std::char_traits<char_type> traits;
+        detail::lexical_stream<Target, Source, traits> interpreter;
+        Target result;
+
+        if(!(interpreter << arg && interpreter >> result))
+            boost::conversion::detail::throw_bad_cast<Source, Target>();
+        return result;
+    }
+
+} // namespace boost
+
+#undef BOOST_LCAST_NO_WCHAR_T
+
+#endif // BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
+