/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */
/*
 * 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.
 *
 */
#ifndef itksys_hash_map_hxx
#define itksys_hash_map_hxx

#include <itksys/hashtable.hxx>

#include <itksys/hash_fun.hxx>

#include <functional> // equal_to

#if defined(_MSC_VER)
#  pragma warning(push)
#  pragma warning(disable : 4284)
#  pragma warning(disable : 4786)
#endif

#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#  pragma set woff 1174
#  pragma set woff 1375
#endif

namespace itksys {

// select1st is an extension: it is not part of the standard.
template <class T1, class T2>
struct hash_select1st
{
  const T1& operator()(const std::pair<T1, T2>& __x) const
  {
    return __x.first;
  }
};

// Forward declaration of equality operator; needed for friend declaration.

template <class _Key, class _Tp, class _HashFcn = hash<_Key>,
          class _EqualKey = std::equal_to<_Key>,
          class _Alloc = std::allocator<char> >
class hash_map;

template <class _Key, class _Tp, class _HashFn, class _EqKey, class _Alloc>
bool operator==(const hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc>&,
                const hash_map<_Key, _Tp, _HashFn, _EqKey, _Alloc>&);

template <class _Key, class _Tp, class _HashFcn, class _EqualKey, class _Alloc>
class hash_map
{
private:
  typedef hashtable<std::pair<const _Key, _Tp>, _Key, _HashFcn,
                    hash_select1st<const _Key, _Tp>, _EqualKey, _Alloc>
    _Ht;
  _Ht _M_ht;

public:
  typedef typename _Ht::key_type key_type;
  typedef _Tp data_type;
  typedef _Tp mapped_type;
  typedef typename _Ht::value_type value_type;
  typedef typename _Ht::hasher hasher;
  typedef typename _Ht::key_equal key_equal;

  typedef typename _Ht::size_type size_type;
  typedef typename _Ht::difference_type difference_type;
  typedef typename _Ht::pointer pointer;
  typedef typename _Ht::const_pointer const_pointer;
  typedef typename _Ht::reference reference;
  typedef typename _Ht::const_reference const_reference;

  typedef typename _Ht::iterator iterator;
  typedef typename _Ht::const_iterator const_iterator;

  typedef typename _Ht::allocator_type allocator_type;

  hasher hash_funct() const { return _M_ht.hash_funct(); }
  key_equal key_eq() const { return _M_ht.key_eq(); }
  allocator_type get_allocator() const { return _M_ht.get_allocator(); }

public:
  hash_map()
    : _M_ht(100, hasher(), key_equal(), allocator_type())
  {
  }
  explicit hash_map(size_type __n)
    : _M_ht(__n, hasher(), key_equal(), allocator_type())
  {
  }
  hash_map(size_type __n, const hasher& __hf)
    : _M_ht(__n, __hf, key_equal(), allocator_type())
  {
  }
  hash_map(size_type __n, const hasher& __hf, const key_equal& __eql,
           const allocator_type& __a = allocator_type())
    : _M_ht(__n, __hf, __eql, __a)
  {
  }

  template <class _InputIterator>
  hash_map(_InputIterator __f, _InputIterator __l)
    : _M_ht(100, hasher(), key_equal(), allocator_type())
  {
    _M_ht.insert_unique(__f, __l);
  }
  template <class _InputIterator>
  hash_map(_InputIterator __f, _InputIterator __l, size_type __n)
    : _M_ht(__n, hasher(), key_equal(), allocator_type())
  {
    _M_ht.insert_unique(__f, __l);
  }
  template <class _InputIterator>
  hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
           const hasher& __hf)
    : _M_ht(__n, __hf, key_equal(), allocator_type())
  {
    _M_ht.insert_unique(__f, __l);
  }
  template <class _InputIterator>
  hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
           const hasher& __hf, const key_equal& __eql,
           const allocator_type& __a = allocator_type())
    : _M_ht(__n, __hf, __eql, __a)
  {
    _M_ht.insert_unique(__f, __l);
  }

public:
  size_type size() const { return _M_ht.size(); }
  size_type max_size() const { return _M_ht.max_size(); }
  bool empty() const { return _M_ht.empty(); }
  void swap(hash_map& __hs) { _M_ht.swap(__hs._M_ht); }

  friend bool operator==<>(const hash_map&, const hash_map&);

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

public:
  std::pair<iterator, bool> insert(const value_type& __obj)
  {
    return _M_ht.insert_unique(__obj);
  }
  template <class _InputIterator>
  void insert(_InputIterator __f, _InputIterator __l)
  {
    _M_ht.insert_unique(__f, __l);
  }
  std::pair<iterator, bool> insert_noresize(const value_type& __obj)
  {
    return _M_ht.insert_unique_noresize(__obj);
  }

  iterator find(const key_type& __key) { return _M_ht.find(__key); }
  const_iterator find(const key_type& __key) const
  {
    return _M_ht.find(__key);
  }

  _Tp& operator[](const key_type& __key)
  {
    return _M_ht.find_or_insert(value_type(__key, _Tp())).second;
  }

  size_type count(const key_type& __key) const { return _M_ht.count(__key); }

  std::pair<iterator, iterator> equal_range(const key_type& __key)
  {
    return _M_ht.equal_range(__key);
  }
  std::pair<const_iterator, const_iterator> equal_range(
    const key_type& __key) const
  {
    return _M_ht.equal_range(__key);
  }

  size_type erase(const key_type& __key) { return _M_ht.erase(__key); }
  void erase(iterator __it) { _M_ht.erase(__it); }
  void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
  void clear() { _M_ht.clear(); }

  void resize(size_type __hint) { _M_ht.resize(__hint); }
  size_type bucket_count() const { return _M_ht.bucket_count(); }
  size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
  size_type elems_in_bucket(size_type __n) const
  {
    return _M_ht.elems_in_bucket(__n);
  }
};

template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
bool operator==(const hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm1,
                const hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm2)
{
  return __hm1._M_ht == __hm2._M_ht;
}

template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
inline bool operator!=(
  const hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm1,
  const hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm2)
{
  return !(__hm1 == __hm2);
}

template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
inline void swap(hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm1,
                 hash_map<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm2)
{
  __hm1.swap(__hm2);
}

// Forward declaration of equality operator; needed for friend declaration.

template <class _Key, class _Tp, class _HashFcn = hash<_Key>,
          class _EqualKey = std::equal_to<_Key>,
          class _Alloc = std::allocator<char> >
class hash_multimap;

template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
bool operator==(const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm1,
                const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm2);

template <class _Key, class _Tp, class _HashFcn, class _EqualKey, class _Alloc>
class hash_multimap
{
private:
  typedef hashtable<std::pair<const _Key, _Tp>, _Key, _HashFcn,
                    hash_select1st<const _Key, _Tp>, _EqualKey, _Alloc>
    _Ht;
  _Ht _M_ht;

public:
  typedef typename _Ht::key_type key_type;
  typedef _Tp data_type;
  typedef _Tp mapped_type;
  typedef typename _Ht::value_type value_type;
  typedef typename _Ht::hasher hasher;
  typedef typename _Ht::key_equal key_equal;

  typedef typename _Ht::size_type size_type;
  typedef typename _Ht::difference_type difference_type;
  typedef typename _Ht::pointer pointer;
  typedef typename _Ht::const_pointer const_pointer;
  typedef typename _Ht::reference reference;
  typedef typename _Ht::const_reference const_reference;

  typedef typename _Ht::iterator iterator;
  typedef typename _Ht::const_iterator const_iterator;

  typedef typename _Ht::allocator_type allocator_type;

  hasher hash_funct() const { return _M_ht.hash_funct(); }
  key_equal key_eq() const { return _M_ht.key_eq(); }
  allocator_type get_allocator() const { return _M_ht.get_allocator(); }

public:
  hash_multimap()
    : _M_ht(100, hasher(), key_equal(), allocator_type())
  {
  }
  explicit hash_multimap(size_type __n)
    : _M_ht(__n, hasher(), key_equal(), allocator_type())
  {
  }
  hash_multimap(size_type __n, const hasher& __hf)
    : _M_ht(__n, __hf, key_equal(), allocator_type())
  {
  }
  hash_multimap(size_type __n, const hasher& __hf, const key_equal& __eql,
                const allocator_type& __a = allocator_type())
    : _M_ht(__n, __hf, __eql, __a)
  {
  }

  template <class _InputIterator>
  hash_multimap(_InputIterator __f, _InputIterator __l)
    : _M_ht(100, hasher(), key_equal(), allocator_type())
  {
    _M_ht.insert_equal(__f, __l);
  }
  template <class _InputIterator>
  hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n)
    : _M_ht(__n, hasher(), key_equal(), allocator_type())
  {
    _M_ht.insert_equal(__f, __l);
  }
  template <class _InputIterator>
  hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n,
                const hasher& __hf)
    : _M_ht(__n, __hf, key_equal(), allocator_type())
  {
    _M_ht.insert_equal(__f, __l);
  }
  template <class _InputIterator>
  hash_multimap(_InputIterator __f, _InputIterator __l, size_type __n,
                const hasher& __hf, const key_equal& __eql,
                const allocator_type& __a = allocator_type())
    : _M_ht(__n, __hf, __eql, __a)
  {
    _M_ht.insert_equal(__f, __l);
  }

public:
  size_type size() const { return _M_ht.size(); }
  size_type max_size() const { return _M_ht.max_size(); }
  bool empty() const { return _M_ht.empty(); }
  void swap(hash_multimap& __hs) { _M_ht.swap(__hs._M_ht); }

  friend bool operator==<>(const hash_multimap&, const hash_multimap&);

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

public:
  iterator insert(const value_type& __obj)
  {
    return _M_ht.insert_equal(__obj);
  }
  template <class _InputIterator>
  void insert(_InputIterator __f, _InputIterator __l)
  {
    _M_ht.insert_equal(__f, __l);
  }
  iterator insert_noresize(const value_type& __obj)
  {
    return _M_ht.insert_equal_noresize(__obj);
  }

  iterator find(const key_type& __key) { return _M_ht.find(__key); }
  const_iterator find(const key_type& __key) const
  {
    return _M_ht.find(__key);
  }

  size_type count(const key_type& __key) const { return _M_ht.count(__key); }

  std::pair<iterator, iterator> equal_range(const key_type& __key)
  {
    return _M_ht.equal_range(__key);
  }
  std::pair<const_iterator, const_iterator> equal_range(
    const key_type& __key) const
  {
    return _M_ht.equal_range(__key);
  }

  size_type erase(const key_type& __key) { return _M_ht.erase(__key); }
  void erase(iterator __it) { _M_ht.erase(__it); }
  void erase(iterator __f, iterator __l) { _M_ht.erase(__f, __l); }
  void clear() { _M_ht.clear(); }

public:
  void resize(size_type __hint) { _M_ht.resize(__hint); }
  size_type bucket_count() const { return _M_ht.bucket_count(); }
  size_type max_bucket_count() const { return _M_ht.max_bucket_count(); }
  size_type elems_in_bucket(size_type __n) const
  {
    return _M_ht.elems_in_bucket(__n);
  }
};

template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
bool operator==(const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm1,
                const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm2)
{
  return __hm1._M_ht == __hm2._M_ht;
}

template <class _Key, class _Tp, class _HF, class _EqKey, class _Alloc>
inline bool operator!=(
  const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm1,
  const hash_multimap<_Key, _Tp, _HF, _EqKey, _Alloc>& __hm2)
{
  return !(__hm1 == __hm2);
}

template <class _Key, class _Tp, class _HashFcn, class _EqlKey, class _Alloc>
inline void swap(hash_multimap<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm1,
                 hash_multimap<_Key, _Tp, _HashFcn, _EqlKey, _Alloc>& __hm2)
{
  __hm1.swap(__hm2);
}

} // namespace itksys

#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#  pragma reset woff 1174
#  pragma reset woff 1375
#endif

#if defined(_MSC_VER)
#  pragma warning(pop)
#endif

#endif
