xref: /trunk/main/stlport/systemstl/hash_set (revision dee715a7)

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#ifndef SYSTEM_STL_HASHSET
#define SYSTEM_STL_HASHSET

#ifdef HAVE_STL_INCLUDE_PATH
	// TODO: use computed include file name
	#include_next <unordered_set>
#elif defined(_MSC_VER)
	#include <../../VC/include/unordered_set>
	#define STLP4_EMUBASE_NS ::std::tr1
#else // fall back to boost/tr1
	#include <boost/tr1/tr1/unordered_set>
	#define STLP4_EMUBASE_NS ::boost
#endif


#ifndef NO_STLPORT4_EMULATION

namespace std
{
#ifdef STLP4_EMUBASE_NS
	using STLP4_EMUBASE_NS::hash;
	using STLP4_EMUBASE_NS::unordered_set;
	using STLP4_EMUBASE_NS::unordered_multiset;
	#undef STLP4_EMUBASE_NS
#endif


template<
	typename __K,
	typename __H = hash<__K>,
	typename __E = equal_to<__K>,
	typename __A = allocator<__K> >
class hash_set
:	public unordered_set<__K,__H,__E,__A>
{
	typedef unordered_set<__K,__H,__E,__A> _super;
public:
	hash_set( void) {}
	hash_set( size_t n) : _super(n) {}
	void resize( size_t n) { _super::rehash( n); }

#ifdef BOOST_TR1_UNORDERED_SET_INCLUDED // workaround pre-BOOST_UNORDERED_USE_MOVE problem
	// in derived classes the copy assignment operator can only be declared implicitly if
	// its base class's assignment operator has the canonical signature.
	// boost's assignment operators don't have this canonical signature when move-semantics are enabled
	hash_set& operator=( const hash_set& r) { hash_set c(r); this->swap(c); return *this; }
#endif

private:
	// setting the hasher dynamically is not supported in the emulation!
	hash_set( size_t, const __H&, const __E& rE=__E(), const __A& rA=__A()); // not implemented
};

template<
	typename __K,
	typename __H = hash<__K>,
	typename __E = equal_to<__K>,
	typename __A = allocator<__K> >
class hash_multiset
:	public unordered_multiset<__K,__H,__E,__A>
{
	typedef unordered_multiset<__K,__H,__E,__A> _super;
public:
	hash_multiset( void) {}
	hash_multiset( size_t n) : _super( n) {}
	void resize( size_t n) { _super::rehash( n); }

#ifdef BOOST_TR1_UNORDERED_SET_INCLUDED // workaround pre-BOOST_UNORDERED_USE_MOVE problem
	// in derived classes the copy assignment operator can only be declared implicitly if
	// its base class's assignment operator has the canonical signature.
	// boost's assignment operators don't have this canonical signature when move-semantics are enabled
	hash_multiset& operator=( const hash_multiset& r) { hash_multiset c(r); this->swap(c); return *this; }
#endif

private:
	// setting the hasher dynamically is not supported in the emulation!
	hash_multiset( size_t, const __H&, const __E& rE=__E(), const __A& rA=__A()); // not implemented
};

} // namespace std

#endif // NO_STLPORT4_EMULATION

#endif