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62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
//===-- Support/hash_map - "Portable" wrapper around hash_map ---*- 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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//
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// This file provides a wrapper around the mysterious <hash_map> 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_map to be available in the
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// global namespace.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_HASH_MAP
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#define SUPPORT_HASH_MAP
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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_map
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// 3.0.4 std ext/hash_map
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// 3.1 __gnu_cxx ext/hash_map
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//
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#include "Config/config.h"
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#ifdef HAVE_GNU_EXT_HASH_MAP
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// This is for GCC-3.1+ which puts hash in ext/hash_map
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#include <ext/hash_map>
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#define HASH_NAMESPACE __gnu_cxx
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#else
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// This is for GCC-3.0.x which puts hashmap in the `ext' directory.
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#ifdef HAVE_STD_EXT_HASH_MAP
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#include <ext/hash_map>
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#define HASH_NAMESPACE std
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#else
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// This handles older, pre-3.0 GCC which do not have the extentions in the `ext'
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// directory, and ignore the `std' namespace.
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#include <hash_map>
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#define HASH_NAMESPACE std
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#endif
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#endif
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using HASH_NAMESPACE::hash_map;
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using HASH_NAMESPACE::hash_multimap;
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using HASH_NAMESPACE::hash;
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// Include vector because ext/hash_map 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 <Support/HashExtras.h>
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#endif
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