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compat_workarounds.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\format\detail\compat_workarounds.hpp
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// ---------------------------------------------------------------------------- // compat_workarounds : general framework for non-conformance workarounds // ---------------------------------------------------------------------------- // Copyright Samuel Krempp 2003. 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/format for library home page // ---------------------------------------------------------------------------- // this file defines wrapper classes to hide non-conforming // std::char_traits<> and std::allocator<> traits // and Includes : config_macros.hpp (defines config macros // and compiler-specific switches) // Non-conformant Std-libs fail to supply conformant traits (std::char_traits, // std::allocator) and/or the std::string doesnt support them. // We don't want to have hundreds of #ifdef workarounds, so we define // replacement traits. // But both char_traits and allocator traits are visible in the interface, // (inside the final string type), thus we need to keep both // the replacement type (typedefed to 'compatible_type') for real use, // and the original stdlib type (typedef to 'type_for_string') for interface // visibility. This is what Compat* classes do (as well as be transparent // when good allocator and char traits are present) #ifndef BOOST_FORMAT_COMPAT_WORKAROUNDS_HPP #define BOOST_FORMAT_COMPAT_WORKAROUNDS_HPP namespace boost { namespace io { // gcc-2.95 char traits (non-conformantly named string_char_traits) // lack several functions so we extend them in a replacement class. template
class CompatTraits; // std::allocator
in gcc-2.95 is ok, but basic_string only works // with plain 'std::alloc' still, alt_stringbuf requires a functionnal // alloc template argument, so we need a replacement allocator template
class CompatAlloc; } // N.S. io }// N.S. boost #include
// sets-up macros and load compiler-specific workarounds headers. #if !defined(BOOST_FORMAT_STREAMBUF_DEFINED) // workarounds-gcc-2.95 might have defined own streambuf #include
#endif #if !defined(BOOST_FORMAT_OSTREAM_DEFINED) // workarounds-gcc-2.95 might already have included
#include
#endif namespace boost { namespace io { // **** CompatTraits general definitions : ---------------------------- template
class CompatTraits { // general case : be transparent public: typedef Tr compatible_type; }; // **** CompatAlloc general definitions : ----------------------------- template
class CompatAlloc { // general case : be transparent public: typedef Alloc compatible_type; }; } //N.S. io } // N.S. boost #endif // include guard
compat_workarounds.hpp
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