69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// (C) Copyright John Maddock 2001.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/config for most recent version.
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// MACRO: BOOST_HAS_HASH
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// TITLE: <hashset> and <hashmap>
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// DESCRIPTION: The C++ implementation provides the (SGI) hash_set
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// or hash_map classes.
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#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
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# ifdef BOOST_NO_CXX11_STD_UNORDERED
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# define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
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# define _BACKWARD_BACKWARD_WARNING_H 1 /* turn off warnings from the headers below */
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# include <ext/hash_set>
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# include <ext/hash_map>
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# else
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// If we have BOOST_NO_CXX11_STD_UNORDERED *not* defined, then we must
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// not include the <ext/*> headers as they clash with the C++0x
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// headers. ie in any given translation unit we can include one
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// or the other, but not both.
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# define DISABLE_BOOST_HAS_HASH_TEST
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# endif
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#else
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#include <hash_set>
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#include <hash_map>
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#endif
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#ifndef BOOST_STD_EXTENSION_NAMESPACE
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#define BOOST_STD_EXTENSION_NAMESPACE std
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#endif
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namespace boost_has_hash{
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#ifndef DISABLE_BOOST_HAS_HASH_TEST
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template <class Key, class Eq, class Hash, class Alloc>
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void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_set<Key,Eq,Hash,Alloc>& )
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{
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}
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template <class Key, class T, class Eq, class Hash, class Alloc>
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void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_map<Key,T,Eq,Hash,Alloc>& )
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{
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}
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#endif
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int test()
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{
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#ifndef DISABLE_BOOST_HAS_HASH_TEST
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BOOST_STD_EXTENSION_NAMESPACE::hash_set<int> hs;
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foo(hs);
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BOOST_STD_EXTENSION_NAMESPACE::hash_map<int, long> hm;
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foo(hm);
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#endif
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return 0;
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}
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}
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