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target for tabs checking. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36146 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
//===-- llvm/ADT/hash_set - "Portable" wrapper around hash_set --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// vim:ft=cpp
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//
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// This file provides a wrapper around the mysterious <hash_set> header file
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// that seems to move around between GCC releases into and out of namespaces at
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// will. #including this header will cause hash_set to be available in the
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// global namespace.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ADT_HASH_SET
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#define LLVM_ADT_HASH_SET
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// Compiler Support Matrix
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//
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// Version Namespace Header File
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// 2.95.x :: hash_set
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// 3.0.4 std ext/hash_set
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// 3.1 __gnu_cxx ext/hash_set
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// HP aCC6 std stdex/rw/hashset.h
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// MS VC++ stdext hash_set
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#undef HAVE_GNU_EXT_HASH_SET
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#undef HAVE_STD_EXT_HASH_SET
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#undef HAVE_GLOBAL_HASH_SET
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#undef HAVE_RW_STDEX_HASH_SET_H
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// GCC versions 3.1 and later put hash_set in <ext/hash_set> and in
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// the __gnu_cxx namespace.
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#if HAVE_GNU_EXT_HASH_SET
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# include <ext/hash_set>
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# ifndef HASH_NAMESPACE
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# define HASH_NAMESPACE __gnu_cxx
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# endif
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// GCC 3.0.x puts hash_set in <ext/hash_set> and in the std namespace.
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#elif HAVE_STD_EXT_HASH_SET
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# include <ext/hash_set>
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# ifndef HASH_NAMESPACE
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# define HASH_NAMESPACE std
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# endif
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// Older compilers such as GCC before version 3.0 do not keep
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// extensions in the `ext' directory, and ignore the `std' namespace.
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#elif HAVE_GLOBAL_HASH_SET
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# include <hash_set>
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# ifndef HASH_NAMESPACE
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# define HASH_NAMESPACE std
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# endif
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// HP aCC doesn't include an SGI-like hash_set. For this platform (or
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// any others using Rogue Wave Software's Tools.h++ library), we wrap
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// around them in std::
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#elif HAVE_RW_STDEX_HASH_SET_H
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# include <rw/stdex/hashset.h>
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# ifndef HASH_NAMESPACE
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# define HASH_NAMESPACE std
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# endif
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// Support Microsoft VC++.
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#elif defined(_MSC_VER)
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# include <hash_set>
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# ifndef HASH_NAMESPACE
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# define HASH_NAMESPACE stdext
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# endif
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// Give a warning if we couldn't find it, instead of (or in addition to)
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// randomly doing something dumb.
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#else
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# warning "Autoconfiguration failed to find the hash_set header file."
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#endif
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// we wrap Rogue Wave Tools.h++ rw_hashset into something SGI-looking, here:
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#ifdef HAVE_RW_STDEX_HASH_SET_H
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namespace HASH_NAMESPACE {
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/*
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template <class DataType> struct hash {
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unsigned int operator()(const unsigned int& x) const {
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return x;
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}
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};
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*/
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template <typename ValueType,
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class _HashFcn = hash<ValueType>,
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class _EqualKey = equal_to<ValueType>,
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class _A = allocator <ValueType> >
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class hash_set :
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public rw_hashset<ValueType, class _HashFcn, class _EqualKey, class _A> {
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};
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} // end HASH_NAMESPACE;
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#endif
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using HASH_NAMESPACE::hash_set;
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// Include vector because ext/hash_set includes stl_vector.h and leaves
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// out specializations like stl_bvector.h, causing link conflicts.
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#include <vector>
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#include "llvm/ADT/HashExtras.h"
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#endif
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