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244 lines
7.5 KiB
244 lines
7.5 KiB
// hash_map standard header
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#pragma once
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#ifndef _HASH_MAP_
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#define _HASH_MAP_
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#include <xhash>
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#pragma pack(push,8)
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#pragma warning(push,3)
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_STD_BEGIN
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// TEMPLATE CLASS _Hmap_traits
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template<class _Kty, // key type
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class _Ty, // mapped type
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class _Tr, // comparator predicate type
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class _Alloc, // actual allocator type (should be value allocator)
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bool _Mfl> // true if multiple equivalent keys are permitted
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class _Hmap_traits
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{ // traits required to make _Hash behave like a map
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public:
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typedef _Kty key_type;
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typedef pair<const _Kty, _Ty> value_type;
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typedef _Tr key_compare;
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typedef typename _Alloc::_TEMPLATE_MEMBER rebind<value_type>::other
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allocator_type;
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enum
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{ // make multi parameter visible as an enum constant
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_Multi = _Mfl};
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_Hmap_traits()
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: comp()
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{ // construct with default comparator
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}
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_Hmap_traits(const _Tr& _Traits)
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: comp(_Traits)
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{ // construct with specified comparator
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}
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class value_compare
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: public binary_function<value_type, value_type, bool>
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{ // functor for comparing two element values
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friend class _Hmap_traits<_Kty, _Ty, _Tr, _Alloc, _Mfl>;
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public:
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bool operator()(const value_type& _Left,
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const value_type& _Right) const
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{ // test if _Left precedes _Right by comparing just keys
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return (comp(_Left.first, _Right.first));
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}
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value_compare(const key_compare& _Traits)
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: comp(_Traits)
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{ // construct with specified predicate
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}
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protected:
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key_compare comp; // the comparator predicate for keys
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};
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static const _Kty& _Kfn(const value_type& _Val)
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{ // extract key from element value
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return (_Val.first);
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}
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_Tr comp; // the comparator predicate for keys
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};
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// TEMPLATE CLASS hash_map
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template<class _Kty,
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class _Ty,
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class _Tr = hash_compare<_Kty, less<_Kty> >,
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class _Alloc = allocator<pair<const _Kty, _Ty> > >
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class hash_map
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: public _Hash<_Hmap_traits<_Kty, _Ty, _Tr, _Alloc, false> >
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{ // hash table of {key, mapped} values, unique keys
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public:
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typedef hash_map<_Kty, _Ty, _Tr, _Alloc> _Myt;
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typedef _Hash<_Hmap_traits<_Kty, _Ty, _Tr, _Alloc, false> > _Mybase;
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typedef _Kty key_type;
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typedef _Ty mapped_type;
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typedef _Ty referent_type;
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typedef _Tr key_compare;
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typedef typename _Mybase::value_compare value_compare;
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typedef typename _Mybase::allocator_type allocator_type;
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typedef typename _Mybase::size_type size_type;
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typedef typename _Mybase::difference_type difference_type;
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typedef typename _Mybase::pointer pointer;
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typedef typename _Mybase::const_pointer const_pointer;
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typedef typename _Mybase::reference reference;
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typedef typename _Mybase::const_reference const_reference;
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typedef typename _Mybase::iterator iterator;
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typedef typename _Mybase::const_iterator const_iterator;
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typedef typename _Mybase::reverse_iterator reverse_iterator;
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typedef typename _Mybase::const_reverse_iterator
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const_reverse_iterator;
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typedef typename _Mybase::value_type value_type;
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hash_map()
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: _Mybase(key_compare(), allocator_type())
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{ // construct empty map from defaults
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}
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explicit hash_map(const key_compare& _Traits)
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: _Mybase(_Traits, allocator_type())
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{ // construct empty map from comparator
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}
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hash_map(const key_compare& _Traits, const allocator_type& _Al)
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: _Mybase(_Traits, _Al)
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{ // construct empty map from comparator and allocator
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}
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template<class _Iter>
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hash_map(_Iter _First, _Iter _Last)
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: _Mybase(key_compare(), allocator_type())
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{ // construct map from sequence, defaults
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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template<class _Iter>
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hash_map(_Iter _First, _Iter _Last, const key_compare& _Traits)
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: _Mybase(_Traits, allocator_type())
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{ // construct map from sequence, comparator
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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template<class _Iter>
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hash_map(_Iter _First, _Iter _Last, const key_compare& _Traits,
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const allocator_type& _Al)
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: _Mybase(_Traits, _Al)
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{ // construct map from sequence, comparator, and allocator
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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mapped_type& operator[](const key_type& _Keyval)
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{ // find element matching _Keyval or insert with default mapped
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iterator _Where =
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insert(value_type(_Keyval, mapped_type())).first;
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return ((*_Where).second);
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}
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};
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// TEMPLATE CLASS hash_multimap
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template<class _Kty,
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class _Ty,
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class _Tr = hash_compare<_Kty, less<_Kty> >,
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class _Alloc = allocator<pair<const _Kty, _Ty> > >
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class hash_multimap
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: public _Hash<_Hmap_traits<_Kty, _Ty, _Tr, _Alloc, true> >
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{ // hash table of {key, mapped} values, non-unique keys
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public:
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typedef hash_multimap<_Kty, _Ty, _Tr, _Alloc> _Myt;
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typedef _Hash<_Hmap_traits<_Kty, _Ty, _Tr, _Alloc, true> > _Mybase;
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typedef _Kty key_type;
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typedef _Ty mapped_type;
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typedef _Ty referent_type; // old name, magically gone
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typedef _Tr key_compare;
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typedef typename _Mybase::value_compare value_compare;
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typedef typename _Mybase::allocator_type allocator_type;
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typedef typename _Mybase::size_type size_type;
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typedef typename _Mybase::difference_type difference_type;
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typedef typename _Mybase::pointer pointer;
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typedef typename _Mybase::const_pointer const_pointer;
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typedef typename _Mybase::reference reference;
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typedef typename _Mybase::const_reference const_reference;
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typedef typename _Mybase::iterator iterator;
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typedef typename _Mybase::const_iterator const_iterator;
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typedef typename _Mybase::reverse_iterator reverse_iterator;
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typedef typename _Mybase::const_reverse_iterator
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const_reverse_iterator;
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typedef typename _Mybase::value_type value_type;
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hash_multimap()
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: _Mybase(key_compare(), allocator_type())
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{ // construct empty map from defaults
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}
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explicit hash_multimap(const key_compare& _Traits)
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: _Mybase(_Traits, allocator_type())
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{ // construct empty map from comparator
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}
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hash_multimap(const key_compare& _Traits,
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const allocator_type& _Al)
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: _Mybase(_Traits, _Al)
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{ // construct empty map from comparator and allocator
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}
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template<class _Iter>
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hash_multimap(_Iter _First, _Iter _Last)
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: _Mybase(key_compare(), allocator_type())
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{ // construct map from sequence, defaults
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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template<class _Iter>
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hash_multimap(_Iter _First, _Iter _Last, const key_compare& _Traits)
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: _Mybase(_Traits, allocator_type())
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{ // construct map from sequence, comparator
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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template<class _Iter>
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hash_multimap(_Iter _First, _Iter _Last, const key_compare& _Traits,
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const allocator_type& _Al)
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: _Mybase(_Traits, _Al)
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{ // construct map from sequence, comparator, and allocator
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for (; _First != _Last; ++_First)
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this->insert(*_First);
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}
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iterator insert(const value_type& _Val)
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{ // insert a {key, mapped} value
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return (_Mybase::insert(_Val).first);
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}
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iterator insert(iterator _Where, const value_type& _Val)
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{ // insert a {key, mapped} value, with hint
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return (_Mybase::insert(_Where, _Val));
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}
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template<class _Iter>
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void insert(_Iter _First, _Iter _Last)
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{ // insert [_First, _Last), arbitrary iterators
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for (; _First != _Last; ++_First)
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insert(*_First);
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}
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};
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_STD_END
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#pragma warning(pop)
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#pragma pack(pop)
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#endif /* _HASH_MAP_ */
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/*
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* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
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* Consult your license regarding permissions and restrictions.
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V3.10:0009 */
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