ceph/src/boost/libs/config/test/boost_has_hash.ipp

   1 //  (C) Copyright John Maddock 2001.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/config for most recent version.
   7
   8 //  MACRO:         BOOST_HAS_HASH
   9 //  TITLE:         <hashset> and <hashmap>
  10 //  DESCRIPTION:   The C++ implementation provides the (SGI) hash_set
  11 //                 or hash_map classes.
  12
  13 #if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
  14 #  ifdef BOOST_NO_CXX11_STD_UNORDERED
  15 #    define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
  16 #    define _BACKWARD_BACKWARD_WARNING_H 1 /* turn off warnings from the headers below */
  17 #    include <ext/hash_set>
  18 #    include <ext/hash_map>
  19 #  else
  20      // If we have BOOST_NO_CXX11_STD_UNORDERED *not* defined, then we must
  21      // not include the <ext/*> headers as they clash with the C++0x
  22      // headers.  ie in any given translation unit we can include one
  23      // or the other, but not both.
  24 #    define DISABLE_BOOST_HAS_HASH_TEST
  25 #  endif
  26 #else
  27 #include <hash_set>
  28 #include <hash_map>
  29 #endif
  30
  31 #ifndef BOOST_STD_EXTENSION_NAMESPACE
  32 #define BOOST_STD_EXTENSION_NAMESPACE std
  33 #endif
  34
  35 namespace boost_has_hash{
  36
  37 #ifndef DISABLE_BOOST_HAS_HASH_TEST
  38
  39 template <class Key, class Eq, class Hash, class Alloc>
  40 void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_set<Key,Eq,Hash,Alloc>& )
  41 {
  42 }
  43
  44 template <class Key, class T, class Eq, class Hash, class Alloc>
  45 void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_map<Key,T,Eq,Hash,Alloc>& )
  46 {
  47 }
  48
  49 #endif
  50
  51 int test()
  52 {
  53 #ifndef DISABLE_BOOST_HAS_HASH_TEST
  54    BOOST_STD_EXTENSION_NAMESPACE::hash_set<int> hs;
  55    foo(hs);
  56    BOOST_STD_EXTENSION_NAMESPACE::hash_map<int, long> hm;
  57    foo(hm);
  58 #endif
  59    return 0;
  60 }
  61
  62 }
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