vcl_hash_map.h

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/*
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * Copyright (c) 1997
 * Moscow Center for SPARC Technology
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Moscow Center for SPARC Technology makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */

#ifndef vcl_emulation_hash_map_h
#define vcl_emulation_hash_map_h

#include <vcl_functional.h>
//#include <vcl_alloc.h>
#include "vcl_hashtable.h"
#include "vcl_alloc.h"

#ifdef __FULL_NAME
# define VCL_FULL_NAME(x) __FULL_NAME(x)
# define VCL_IMPORT_CONTAINER_TYPEDEFS(super) __IMPORT_CONTAINER_TYPEDEFS(super)
# define VCL_IMPORT_ITERATORS(super) __IMPORT_ITERATORS(super)
# define VCL_IMPORT_REVERSE_ITERATORS(super) __IMPORT_REVERSE_ITERATORS(super)
#else
// Using emulated hashtable, but not stlconf -- mini stlconf is built here

#define VCL_FULL_NAME(x) x

#  define VCL_IMPORT_CONTAINER_TYPEDEFS(super)                            \
    typedef typename super::value_type value_type;                               \
    typedef typename super::reference reference;                                 \
    typedef typename super::size_type size_type;                                 \
    typedef typename super::const_reference const_reference;                     \
    typedef typename super::difference_type difference_type;

#  define VCL_IMPORT_ITERATORS(super)                                              \
    typedef typename super::iterator iterator;                                   \
    typedef typename super::const_iterator const_iterator;

#  define VCL_IMPORT_REVERSE_ITERATORS(super)                                      \
    typedef typename super::const_reverse_iterator  const_reverse_iterator;      \
    typedef typename super::reverse_iterator reverse_iterator;

# ifndef __STL_DEFAULT_TYPE_PARAM
#  define vcl_hash_map  VCL_hash_map__
#  define vcl_hash_multimap  VCL_hash_multimap__
# endif
#endif

//# define  vcl_hash_map      vcl_hM
//# define  vcl_hash_multimap vcl_hmM

template <class Key, class T,
          VCL_DFL_TMPL_PARAM_STLDECL(HashFcn,vcl_hash<Key>),
          VCL_DFL_TMPL_PARAM_STLDECL(EqualKey,vcl_equal_to<Key>),
          VCL_DFL_TYPE_PARAM_STLDECL(Alloc,vcl_alloc) >
class vcl_hash_map
{
private:
  typedef vcl_select1st<vcl_pair<const Key, T> > sel1st;
  typedef vcl_hashtable<vcl_pair<const Key, T>, Key, HashFcn, sel1st, EqualKey, Alloc> ht;
  typedef vcl_hash_map<Key, T, HashFcn, EqualKey, Alloc> self;
public:
  VCL_IMPORT_CONTAINER_TYPEDEFS(ht)
  VCL_IMPORT_ITERATORS(ht)
  typedef typename ht::key_type key_type;
  typedef typename ht::hasher hasher;
  typedef typename ht::key_equal key_equal;
  typedef T data_type;
  typedef typename ht::pointer pointer;
  typedef typename ht::const_pointer const_pointer;
private:
  ht rep;

public:
  hasher hash_funct() const { return rep.hash_funct(); }
  key_equal key_eq() const { return rep.key_eq(); }

public:
  vcl_hash_map() : rep(100, hasher(), key_equal()) {}
  vcl_hash_map(size_type n) : rep(n, hasher(), key_equal()) {}
  vcl_hash_map(size_type n, const hasher& hf) : rep(n, hf, key_equal()) {}
  vcl_hash_map(size_type n, const hasher& hf, const key_equal& eql)
    : rep(n, hf, eql) {}

  vcl_hash_map(const value_type* f, const value_type* l)
    : rep(100, hasher(), key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const value_type* f, const value_type* l, size_type n)
    : rep(n, hasher(), key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const value_type* f, const value_type* l, size_type n,
               const hasher& hf)
    : rep(n, hf, key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const value_type* f, const value_type* l, size_type n,
               const hasher& hf, const key_equal& eql)
    : rep(n, hf, eql) { rep.insert_unique(f, l); }

  vcl_hash_map(const_iterator f, const_iterator l)
    : rep(100, hasher(), key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const_iterator f, const_iterator l, size_type n)
    : rep(n, hasher(), key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const_iterator f, const_iterator l, size_type n,
               const hasher& hf)
    : rep(n, hf, key_equal()) { rep.insert_unique(f, l); }
  vcl_hash_map(const_iterator f, const_iterator l, size_type n,
               const hasher& hf, const key_equal& eql)
    : rep(n, hf, eql) { rep.insert_unique(f, l); }

public:
  size_type size() const { return rep.size(); }
  size_type max_size() const { return rep.max_size(); }
  bool empty() const { return rep.empty(); }
  void swap(self& hs) { rep.swap(hs.rep); }
  friend bool operator==(const vcl_hash_map<Key,T,HashFcn,EqualKey,Alloc>&,
                         const vcl_hash_map<Key,T,HashFcn,EqualKey,Alloc>&);

  iterator begin() { return rep.begin(); }
  iterator end() { return rep.end(); }
  const_iterator begin() const { return rep.begin(); }
  const_iterator end() const { return rep.end(); }

public:
  vcl_pair<iterator, bool> insert(const value_type& obj)
    { return rep.insert_unique(obj); }
  void insert(const value_type* f, const value_type* l) { rep.insert_unique(f,l); }
  void insert(const_iterator f, const_iterator l) { rep.insert_unique(f, l); }
  vcl_pair<iterator, bool> insert_noresize(const value_type& obj)
    { return rep.insert_unique_noresize(obj); }

  iterator find(const key_type& key) { return rep.find(key); }
  const_iterator find(const key_type& key) const { return rep.find(key); }

  T& operator[](const key_type& key)
  {
      value_type val(key, T());
      return rep.find_or_insert(val).second;
  }

  size_type count(const key_type& key) const { return rep.count(key); }

  vcl_pair<iterator, iterator> equal_range(const key_type& key)
    { return rep.equal_range(key); }
  vcl_pair<const_iterator, const_iterator> equal_range(const key_type& key) const
    { return rep.equal_range(key); }

  size_type erase(const key_type& key) {return rep.erase(key); }
  void erase(iterator it) { rep.erase(it); }
  void erase(iterator f, iterator l) { rep.erase(f, l); }
  void clear() { rep.clear(); }

public:
  void resize(size_type hint) { rep.resize(hint); }
  size_type bucket_count() const { return rep.bucket_count(); }
  size_type max_bucket_count() const { return rep.max_bucket_count(); }
  size_type elems_in_bucket(size_type n) const
    { return rep.elems_in_bucket(n); }
};


template <class Key, class T, VCL_DFL_TMPL_PARAM_STLDECL(HashFcn,vcl_hash<Key>),
          VCL_DFL_TMPL_PARAM_STLDECL(EqualKey,vcl_equal_to<Key>),
          VCL_DFL_TYPE_PARAM_STLDECL(Alloc,vcl_alloc) >
class vcl_hash_multimap
{
private:
  typedef vcl_hashtable<vcl_pair<const Key, T>, Key, HashFcn,
      vcl_select1st<vcl_pair<const Key, T> >, EqualKey, Alloc> ht;
  typedef vcl_hash_multimap<Key, T, HashFcn, EqualKey, Alloc> self;
public:
  VCL_IMPORT_CONTAINER_TYPEDEFS(ht)
  VCL_IMPORT_ITERATORS(ht)
  typedef typename ht::key_type key_type;
  typedef typename ht::hasher hasher;
  typedef typename ht::key_equal key_equal;
  typedef T data_type;
  typedef typename ht::pointer pointer;