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itk_hash_map.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itk_hash_map.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-02-05 19:05:01 $
00007   Version:   $Revision: 1.21 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00054 #ifndef __itk_hash_map_h
00055 #define __itk_hash_map_h
00056 
00057 #if defined(_MSC_VER)
00058 #pragma warning ( disable : 4786 )
00059 #endif
00060 
00061 #if (defined(__GNUC__) && (((__GNUC__==3) && (__GNUC_MINOR__>=1) || (__GNUC__>3) ) || ( (__GNUC__==4) && defined(__INTEL_COMPILER) ) )) || (defined(__IBMCPP__) && __IBMCPP__ >= 600)
00062 // Use this hash_map for GNU_C versions >= 3.1, IBMCPP >=600, or Intel compilers with GCCv4
00063 
00064 // #if (defined(__GNUC__) && ((__GNUC__==4) && (__GNUC_MINOR__>=3) ) )
00065 // in gcc 4.3 the header <ext/hash_map> was deprecated and replaced with <unordered_map>.
00066 // note that this is still experimental in gcc 4.3
00067 // #include <tr1/unordered_map>
00068 // #else
00069 #include <ext/hash_map>
00070 // #endif
00071 
00072 namespace itk
00073 {
00074   using __gnu_cxx::hash;
00075   using __gnu_cxx::hash_map;
00076   using __gnu_cxx::hash_multimap;
00077 }
00078 
00079 #else
00080 
00081 #include "itk_hashtable.h"
00082 #include "itk_alloc.h"
00083 
00084 
00085 // The following is required for CodeWarrior
00086 #if defined(__MWERKS__)
00087 #include "vcl_functional.h"
00088 #endif
00089 
00090 #include "vcl_compiler.h"
00091 
00092 
00093 namespace itk
00094 {
00095 
00096 #  define VCL_IMPORT_CONTAINER_TYPEDEFS(super)                            \
00097     typedef typename super::value_type value_type;                               \
00098     typedef typename super::reference reference;                                 \
00099     typedef typename super::size_type size_type;                                 \
00100     typedef typename super::const_reference const_reference;                     \
00101     typedef typename super::difference_type difference_type;
00102 
00103 #  define VCL_IMPORT_ITERATORS(super)                                              \
00104     typedef typename super::iterator iterator;                                   \
00105     typedef typename super::const_iterator const_iterator; 
00106 
00107 #  define VCL_IMPORT_REVERSE_ITERATORS(super)                                      \
00108     typedef typename super::const_reverse_iterator  const_reverse_iterator;      \
00109     typedef typename super::reverse_iterator reverse_iterator;
00110 
00111 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00112 class hash_map;
00113 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00114 class hash_multimap;
00115 
00116 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00117 bool operator==(const hash_map<Key, T, HashFcn, EqualKey, Alloc>&,
00118                 const hash_map<Key, T, HashFcn, EqualKey, Alloc>&);
00119 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00120 bool operator==(const hash_multimap<Key, T, HashFcn, EqualKey, Alloc>&,
00121                 const hash_multimap<Key, T, HashFcn, EqualKey, Alloc>&);
00122 
00127 template <class Key, class T,
00128           VCL_DFL_TMPL_PARAM_STLDECL(HashFcn,hash<Key>),
00129           VCL_DFL_TMPL_PARAM_STLDECL(EqualKey,std::equal_to<Key>),
00130           VCL_DFL_TYPE_PARAM_STLDECL(Alloc,std::allocator<char> ) >
00131 class hash_map
00132 {
00133 private:
00134   typedef std::select1st<std::pair<const Key, T> > sel1st;
00135   typedef hashtable<std::pair<const Key, T>, Key, HashFcn, sel1st, EqualKey, Alloc> ht;
00136   typedef hash_map<Key, T, HashFcn, EqualKey, Alloc> self;
00137 public:
00138   VCL_IMPORT_CONTAINER_TYPEDEFS(ht)
00139   VCL_IMPORT_ITERATORS(ht)
00140   typedef typename ht::key_type key_type;
00141   typedef typename ht::hasher hasher;
00142   typedef typename ht::key_equal key_equal;
00143   typedef T data_type;
00144   typedef typename ht::pointer pointer;
00145   typedef typename ht::const_pointer const_pointer;
00146 private:
00147   ht rep;
00148 
00149 public:
00150   hasher hash_funct() const { return rep.hash_funct(); }
00151   key_equal key_eq() const { return rep.key_eq(); }
00152 
00153 public:
00154   hash_map() : rep(100, hasher(), key_equal()) {}
00155   hash_map(size_type n) : rep(n, hasher(), key_equal()) {}
00156   hash_map(size_type n, const hasher& hf) : rep(n, hf, key_equal()) {}
00157   hash_map(size_type n, const hasher& hf, const key_equal& eql)
00158     : rep(n, hf, eql) {}
00159 
00160   hash_map(const value_type* f, const value_type* l)
00161     : rep(100, hasher(), key_equal()) { rep.insert_unique(f, l); }
00162   hash_map(const value_type* f, const value_type* l, size_type n)
00163     : rep(n, hasher(), key_equal()) { rep.insert_unique(f, l); }
00164   hash_map(const value_type* f, const value_type* l, size_type n,
00165            const hasher& hf)
00166     : rep(n, hf, key_equal()) { rep.insert_unique(f, l); }
00167   hash_map(const value_type* f, const value_type* l, size_type n,
00168            const hasher& hf, const key_equal& eql)
00169     : rep(n, hf, eql) { rep.insert_unique(f, l); }
00170 
00171   hash_map(const_iterator f, const_iterator l)
00172     : rep(100, hasher(), key_equal()) { rep.insert_unique(f, l); }
00173   hash_map(const_iterator f, const_iterator l, size_type n)
00174     : rep(n, hasher(), key_equal()) { rep.insert_unique(f, l); }
00175   hash_map(const_iterator f, const_iterator l, size_type n,
00176            const hasher& hf)
00177     : rep(n, hf, key_equal()) { rep.insert_unique(f, l); }
00178   hash_map(const_iterator f, const_iterator l, size_type n,
00179            const hasher& hf, const key_equal& eql)
00180     : rep(n, hf, eql) { rep.insert_unique(f, l); }
00181 
00182 public:
00183   size_type size() const { return rep.size(); }
00184   size_type max_size() const { return rep.max_size(); }
00185   bool empty() const { return rep.empty(); }
00186   void swap(self& hs) { rep.swap(hs.rep); }
00187 
00188   friend bool operator==ITK_FRIEND_TEMPLATE_FUNCTION_ARGUMENT(self)(const self &, const self &);
00189 
00190   iterator begin() { return rep.begin(); }
00191   iterator end() { return rep.end(); }
00192   const_iterator begin() const { return rep.begin(); }
00193   const_iterator end() const { return rep.end(); }
00194 
00195 public:
00196   std::pair<iterator, bool> insert(const value_type& obj)
00197     { return rep.insert_unique(obj); }
00198   void insert(const value_type* f, const value_type* l) { rep.insert_unique(f,l); }
00199   void insert(const_iterator f, const_iterator l) { rep.insert_unique(f, l); }
00200   std::pair<iterator, bool> insert_noresize(const value_type& obj)
00201     { return rep.insert_unique_noresize(obj); }
00202 
00203   iterator find(const key_type& key) { return rep.find(key); }
00204   const_iterator find(const key_type& key) const { return rep.find(key); }
00205 
00206   T& operator[](const key_type& key)
00207     {
00208     value_type val(key, T());
00209     return rep.find_or_insert(val).second;
00210     }
00211 
00212   size_type count(const key_type& key) const { return rep.count(key); }
00213   
00214   std::pair<iterator, iterator> equal_range(const key_type& key)
00215     { return rep.equal_range(key); }
00216   std::pair<const_iterator, const_iterator> equal_range(const key_type& key) const
00217     { return rep.equal_range(key); }
00218 
00219   size_type erase(const key_type& key) {return rep.erase(key); }
00220   void erase(iterator it) { rep.erase(it); }
00221   void erase(iterator f, iterator l) { rep.erase(f, l); }
00222   void clear() { rep.clear(); }
00223 
00224 public:
00225   void resize(size_type hint) { rep.resize(hint); }
00226   size_type bucket_count() const { return rep.bucket_count(); }
00227   size_type max_bucket_count() const { return rep.max_bucket_count(); }
00228   size_type elems_in_bucket(size_type n) const
00229     { return rep.elems_in_bucket(n); }
00230 };
00231 
00232 
00233 template <class Key, class T, VCL_DFL_TMPL_PARAM_STLDECL(HashFcn,hash<Key>),
00234           VCL_DFL_TMPL_PARAM_STLDECL(EqualKey,std::equal_to<Key>),
00235           VCL_DFL_TYPE_PARAM_STLDECL(Alloc,std::allocator<char> ) >
00236 class hash_multimap
00237 {
00238 private:
00239   typedef hashtable<std::pair<const Key, T>, Key, HashFcn,
00240       std::select1st<std::pair<const Key, T> >, EqualKey, Alloc> ht;
00241   typedef hash_multimap<Key, T, HashFcn, EqualKey, Alloc> self;
00242 public:
00243   VCL_IMPORT_CONTAINER_TYPEDEFS(ht)
00244   VCL_IMPORT_ITERATORS(ht)
00245   typedef typename ht::key_type key_type;
00246   typedef typename ht::hasher hasher;
00247   typedef typename ht::key_equal key_equal;
00248   typedef T data_type;
00249   typedef typename ht::pointer pointer;
00250   typedef typename ht::const_pointer const_pointer;
00251 
00252   hasher hash_funct() const { return rep.hash_funct(); }
00253   key_equal key_eq() const { return rep.key_eq(); }
00254 private:
00255   ht rep;
00256 
00257 public:
00258   hash_multimap() : rep(100, hasher(), key_equal()) {}
00259   hash_multimap(size_type n) : rep(n, hasher(), key_equal()) {}
00260   hash_multimap(size_type n, const hasher& hf) : rep(n, hf, key_equal()) {}
00261   hash_multimap(size_type n, const hasher& hf, const key_equal& eql)
00262     : rep(n, hf, eql) {}
00263 
00264   hash_multimap(const value_type* f, const value_type* l)
00265     : rep(100, hasher(), key_equal()) { rep.insert_equal(f, l); }
00266   hash_multimap(const value_type* f, const value_type* l, size_type n)
00267     : rep(n, hasher(), key_equal()) { rep.insert_equal(f, l); }
00268   hash_multimap(const value_type* f, const value_type* l, size_type n,
00269            const hasher& hf)
00270     : rep(n, hf, key_equal()) { rep.insert_equal(f, l); }
00271   hash_multimap(const value_type* f, const value_type* l, size_type n,
00272            const hasher& hf, const key_equal& eql)
00273     : rep(n, hf, eql) { rep.insert_equal(f, l); }
00274 
00275   hash_multimap(const_iterator f, const_iterator l)
00276     : rep(100, hasher(), key_equal()) { rep.insert_equal(f, l); }
00277   hash_multimap(const_iterator f, const_iterator l, size_type n)
00278     : rep(n, hasher(), key_equal()) { rep.insert_equal(f, l); }
00279   hash_multimap(const_iterator f, const_iterator l, size_type n,
00280            const hasher& hf)
00281     : rep(n, hf, key_equal()) { rep.insert_equal(f, l); }
00282   hash_multimap(const_iterator f, const_iterator l, size_type n,
00283            const hasher& hf, const key_equal& eql)
00284     : rep(n, hf, eql) { rep.insert_equal(f, l); }
00285 
00286 public:
00287   size_type size() const { return rep.size(); }
00288   size_type max_size() const { return rep.max_size(); }
00289   bool empty() const { return rep.empty(); }
00290   void swap(self& hs) { rep.swap(hs.rep); }
00291 
00292   friend bool operator==ITK_FRIEND_TEMPLATE_FUNCTION_ARGUMENT(self)(const self &, const self &);
00293 
00294   iterator begin() { return rep.begin(); }
00295   iterator end() { return rep.end(); }
00296   const_iterator begin() const { return rep.begin(); }
00297   const_iterator end() const { return rep.end(); }
00298 
00299 public:
00300   iterator insert(const value_type& obj) { return rep.insert_equal(obj); }
00301   void insert(const value_type* f, const value_type* l) { rep.insert_equal(f,l); }
00302   void insert(const_iterator f, const_iterator l) { rep.insert_equal(f, l); }
00303   iterator insert_noresize(const value_type& obj)
00304     { return rep.insert_equal_noresize(obj); }
00305 
00306   iterator find(const key_type& key) { return rep.find(key); }
00307   const_iterator find(const key_type& key) const { return rep.find(key); }
00308 
00309   size_type count(const key_type& key) const { return rep.count(key); }
00310   
00311   std::pair<iterator, iterator> equal_range(const key_type& key)
00312     { return rep.equal_range(key); }
00313   std::pair<const_iterator, const_iterator> equal_range(const key_type& key) const
00314     { return rep.equal_range(key); }
00315 
00316   size_type erase(const key_type& key) {return rep.erase(key); }
00317   void erase(iterator it) { rep.erase(it); }
00318   void erase(iterator f, iterator l) { rep.erase(f, l); }
00319   void clear() { rep.clear(); }
00320 
00321 public:
00322   void resize(size_type hint) { rep.resize(hint); }
00323   size_type bucket_count() const { return rep.bucket_count(); }
00324   size_type max_bucket_count() const { return rep.max_bucket_count(); }
00325   size_type elems_in_bucket(size_type n) const
00326     { return rep.elems_in_bucket(n); }
00327 };
00328 
00331 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00332 bool operator==(const hash_map<Key, T, HashFcn, EqualKey, Alloc>& hm1,
00333                        const hash_map<Key, T, HashFcn, EqualKey, Alloc>& hm2)
00334 {
00335   return hm1.rep == hm2.rep;
00336 }
00337 
00340 template <class Key, class T, class HashFcn, class EqualKey, class Alloc>
00341 bool operator==(const hash_multimap<Key, T, HashFcn, EqualKey, Alloc>& hm1,
00342                        const hash_multimap<Key, T, HashFcn, EqualKey, Alloc>& hm2)
00343 {
00344   return hm1.rep == hm2.rep;
00345 }
00346 
00347 
00348 #define HASH_MAP_INSTANTIATE \
00349 extern "please include emulation/hash_map.txx instead"
00350 
00351 } // end namespace itk
00352 
00353 #endif
00354 
00355 #endif // itk_emulation_hash_map_h
00356 

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