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List:       boost-commit
Subject:    [Boost-commit] svn:boost r83642 - trunk/boost
From:       antoshkka () gmail ! com
Date:       2013-03-30 7:20:23
Message-ID: 20130330072023.DF0212F811F () wowbagger ! osl ! iu ! edu
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Author: apolukhin
Date: 2013-03-30 03:20:22 EDT (Sat, 30 Mar 2013)
New Revision: 83642
URL: http://svn.boost.org/trac/boost/changeset/83642

Log:
Fix streams and buffers usage  (refs #8267 and refs #7704). Now conversions the use \
STL streams shall work faster Text files modified: 
   trunk/boost/lexical_cast.hpp |    20 +++++++++-----------                    
   1 files changed, 9 insertions(+), 11 deletions(-)

Modified: trunk/boost/lexical_cast.hpp
==============================================================================
--- trunk/boost/lexical_cast.hpp	(original)
+++ trunk/boost/lexical_cast.hpp	2013-03-30 03:20:22 EDT (Sat, 30 Mar 2013)
@@ -1526,13 +1526,12 @@
 
 #if defined(BOOST_NO_STRINGSTREAM)
             typedef std::ostrstream                         out_stream_t;
-            typedef parser_buf<std::strstreambuf, char>     unlocked_but_t;
 #elif defined(BOOST_NO_STD_LOCALE)
             typedef std::ostringstream                      out_stream_t;
-            typedef parser_buf<std::stringbuf, char>        unlocked_but_t;
+            typedef parser_buf<std::streambuf, char>        buffer_t;
 #else
             typedef std::basic_ostringstream<CharT, Traits>                 \
                out_stream_t;
-            typedef parser_buf<std::basic_stringbuf<CharT, Traits>, CharT>  \
unlocked_but_t; +            typedef parser_buf<std::basic_streambuf<CharT, Traits>, \
CharT>  buffer_t;  #endif
             typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
                 RequiresStringbuffer,
@@ -1615,8 +1614,9 @@
                 BOOST_STATIC_ASSERT((boost::is_same<char, CharT>::value));
 #endif
                 bool const result = !(out_stream << input).fail();
-                const unlocked_but_t* const p
-                        = static_cast<unlocked_but_t*>(out_stream.rdbuf()) ;
+                const buffer_t* const p = static_cast<buffer_t*>(
+                    static_cast<std::basic_streambuf<CharT, \
Traits>*>(out_stream.rdbuf()) +                );
                 start = p->pbase();
                 finish = p->pptr();
                 return result;
@@ -1984,15 +1984,13 @@
                 std::istrstream stream(start, finish - start);
 #else
 
+                buffer_t buf;
+                buf.setbuf(start, finish - start);
 #if defined(BOOST_NO_STD_LOCALE)
-                std::istringstream stream;
+                std::istream stream(&buf);
 #else
-                std::basic_istringstream<CharT, Traits> stream;
+                std::basic_istream<CharT, Traits> stream(&buf);
 #endif // BOOST_NO_STD_LOCALE
-
-                unlocked_but_t buf;
-                buf.setbuf(start, finish - start);
-                dynamic_cast<std::basic_ios<CharT, Traits>&>(stream).rdbuf(&buf);
 #endif // BOOST_NO_STRINGSTREAM
 
                 stream.unsetf(std::ios::skipws);
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