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//===-- llvm/ADT/hash_set - "Portable" wrapper around hash_set --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// vim:ft=cpp
//
// This file provides a wrapper around the mysterious <hash_set> header file
// that seems to move around between GCC releases into and out of namespaces at
// will. #including this header will cause hash_set to be available in the
// global namespace.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ADT_HASH_SET
#define LLVM_ADT_HASH_SET
// Compiler Support Matrix
//
// Version Namespace Header File
// 2.95.x :: hash_set
// 3.0.4 std ext/hash_set
// 3.1 __gnu_cxx ext/hash_set
// HP aCC6 std stdex/rw/hashset.h
// MS VC++ stdext hash_set
#cmakedefine HAVE_GNU_EXT_HASH_SET
#cmakedefine HAVE_STD_EXT_HASH_SET
#cmakedefine HAVE_GLOBAL_HASH_SET
#cmakedefine HAVE_RW_STDEX_HASH_SET_H
// GCC versions 3.1 and later put hash_set in <ext/hash_set> and in
// the __gnu_cxx namespace.
#if defined(HAVE_GNU_EXT_HASH_SET)
# include <ext/hash_set>
# ifndef HASH_NAMESPACE
# define HASH_NAMESPACE __gnu_cxx
# endif
// GCC 3.0.x puts hash_set in <ext/hash_set> and in the std namespace.
#elif defined(HAVE_STD_EXT_HASH_SET)
# include <ext/hash_set>
# ifndef HASH_NAMESPACE
# define HASH_NAMESPACE std
# endif
// Older compilers such as GCC before version 3.0 do not keep
// extensions in the `ext' directory, and ignore the `std' namespace.
#elif defined(HAVE_GLOBAL_HASH_SET)
# include <hash_set>
# ifndef HASH_NAMESPACE
# define HASH_NAMESPACE std
# endif
// HP aCC doesn't include an SGI-like hash_set. For this platform (or
// any others using Rogue Wave Software's Tools.h++ library), we wrap
// around them in std::
#elif defined(HAVE_RW_STDEX_HASH_SET_H)
# include <rw/stdex/hashset.h>
# ifndef HASH_NAMESPACE
# define HASH_NAMESPACE std
# endif
// Support Microsoft VC++.
#elif defined(_MSC_VER)
# include <hash_set>
# ifndef HASH_NAMESPACE
# define HASH_NAMESPACE stdext
# endif
// Give a warning if we couldn't find it, instead of (or in addition to)
// randomly doing something dumb.
#else
# warning "Autoconfiguration failed to find the hash_set header file."
#endif
// we wrap Rogue Wave Tools.h++ rw_hashset into something SGI-looking, here:
#ifdef HAVE_RW_STDEX_HASH_SET_H
namespace HASH_NAMESPACE {
/*
template <class DataType> struct hash {
unsigned int operator()(const unsigned int& x) const {
return x;
}
};
*/
template <typename ValueType,
class _HashFcn = hash<ValueType>,
class _EqualKey = equal_to<ValueType>,
class _A = allocator <ValueType> >
class hash_set :
public rw_hashset<ValueType, class _HashFcn, class _EqualKey, class _A> {
};
} // end HASH_NAMESPACE;
#endif
using HASH_NAMESPACE::hash_set;
// Include vector because ext/hash_set includes stl_vector.h and leaves
// out specializations like stl_bvector.h, causing link conflicts.
#include <vector>
#include "llvm/ADT/HashExtras.h"
#endif
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