cc56eed564
BucketFromNode typedef must be defined as a function returning size_t, as GetBucketForNode() method in the classes generated by hash map macros does, to avoid warnings about bad function pointer casts in Win64 build, where size_t is not the same thing as "unsigned long".
753 lines
26 KiB
C++
753 lines
26 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/hashmap.h
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// Purpose: wxHashMap class
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// Author: Mattia Barbon
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// Modified by:
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// Created: 29/01/2002
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// Copyright: (c) Mattia Barbon
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_HASHMAP_H_
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#define _WX_HASHMAP_H_
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#include "wx/string.h"
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#include "wx/wxcrt.h"
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// In wxUSE_STD_CONTAINERS build we prefer to use the standard hash map class
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// but it can be either in non-standard hash_map header (old g++ and some other
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// STL implementations) or in C++0x standard unordered_map which can in turn be
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// available either in std::tr1 or std namespace itself
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//
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// To summarize: if std::unordered_map is available use it, otherwise use tr1
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// and finally fall back to non-standard hash_map
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#if (defined(HAVE_EXT_HASH_MAP) || defined(HAVE_HASH_MAP)) \
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&& (defined(HAVE_GNU_CXX_HASH_MAP) || defined(HAVE_STD_HASH_MAP))
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#define HAVE_STL_HASH_MAP
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#endif
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#if wxUSE_STD_CONTAINERS && \
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(defined(HAVE_STD_UNORDERED_MAP) || defined(HAVE_TR1_UNORDERED_MAP))
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#if defined(HAVE_STD_UNORDERED_MAP)
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#include <unordered_map>
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#define WX_HASH_MAP_NAMESPACE std
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#elif defined(HAVE_TR1_UNORDERED_MAP)
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#include <tr1/unordered_map>
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#define WX_HASH_MAP_NAMESPACE std::tr1
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#endif
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#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
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typedef WX_HASH_MAP_NAMESPACE::unordered_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME
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#elif wxUSE_STD_CONTAINERS && defined(HAVE_STL_HASH_MAP)
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#if defined(HAVE_EXT_HASH_MAP)
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#include <ext/hash_map>
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#elif defined(HAVE_HASH_MAP)
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#include <hash_map>
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#endif
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#if defined(HAVE_GNU_CXX_HASH_MAP)
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#define WX_HASH_MAP_NAMESPACE __gnu_cxx
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#elif defined(HAVE_STD_HASH_MAP)
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#define WX_HASH_MAP_NAMESPACE std
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#endif
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#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
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typedef WX_HASH_MAP_NAMESPACE::hash_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME
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#else // !wxUSE_STD_CONTAINERS || no std::{hash,unordered}_map class available
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#define wxNEEDS_WX_HASH_MAP
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#include <stddef.h> // for ptrdiff_t
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// private
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struct WXDLLIMPEXP_BASE _wxHashTable_NodeBase
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{
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_wxHashTable_NodeBase() : m_next(NULL) {}
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_wxHashTable_NodeBase* m_next;
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// Cannot do this:
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// wxDECLARE_NO_COPY_CLASS(_wxHashTable_NodeBase);
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// without rewriting the macros, which require a public copy constructor.
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};
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// private
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class WXDLLIMPEXP_BASE _wxHashTableBase2
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{
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public:
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typedef void (*NodeDtor)(_wxHashTable_NodeBase*);
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typedef size_t (*BucketFromNode)(_wxHashTableBase2*,_wxHashTable_NodeBase*);
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typedef _wxHashTable_NodeBase* (*ProcessNode)(_wxHashTable_NodeBase*);
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protected:
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static _wxHashTable_NodeBase* DummyProcessNode(_wxHashTable_NodeBase* node);
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static void DeleteNodes( size_t buckets, _wxHashTable_NodeBase** table,
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NodeDtor dtor );
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static _wxHashTable_NodeBase* GetFirstNode( size_t buckets,
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_wxHashTable_NodeBase** table )
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{
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for( size_t i = 0; i < buckets; ++i )
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if( table[i] )
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return table[i];
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return NULL;
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}
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// as static const unsigned prime_count = 31 but works with all compilers
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enum { prime_count = 31 };
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static const unsigned long ms_primes[prime_count];
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// returns the first prime in ms_primes greater than n
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static unsigned long GetNextPrime( unsigned long n );
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// returns the first prime in ms_primes smaller than n
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// ( or ms_primes[0] if n is very small )
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static unsigned long GetPreviousPrime( unsigned long n );
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static void CopyHashTable( _wxHashTable_NodeBase** srcTable,
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size_t srcBuckets, _wxHashTableBase2* dst,
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_wxHashTable_NodeBase** dstTable,
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BucketFromNode func, ProcessNode proc );
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static void** AllocTable( size_t sz )
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{
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return (void **)calloc(sz, sizeof(void*));
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}
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static void FreeTable(void *table)
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{
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free(table);
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}
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};
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#define _WX_DECLARE_HASHTABLE( VALUE_T, KEY_T, HASH_T, KEY_EX_T, KEY_EQ_T,\
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PTROPERATOR, CLASSNAME, CLASSEXP, \
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SHOULD_GROW, SHOULD_SHRINK ) \
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CLASSEXP CLASSNAME : protected _wxHashTableBase2 \
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{ \
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public: \
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typedef KEY_T key_type; \
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typedef VALUE_T value_type; \
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typedef HASH_T hasher; \
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typedef KEY_EQ_T key_equal; \
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\
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typedef size_t size_type; \
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typedef ptrdiff_t difference_type; \
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typedef value_type* pointer; \
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typedef const value_type* const_pointer; \
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typedef value_type& reference; \
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typedef const value_type& const_reference; \
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/* should these be protected? */ \
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typedef const KEY_T const_key_type; \
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typedef const VALUE_T const_mapped_type; \
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public: \
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typedef KEY_EX_T key_extractor; \
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typedef CLASSNAME Self; \
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protected: \
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_wxHashTable_NodeBase** m_table; \
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size_t m_tableBuckets; \
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size_t m_items; \
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hasher m_hasher; \
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key_equal m_equals; \
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key_extractor m_getKey; \
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public: \
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struct Node:public _wxHashTable_NodeBase \
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{ \
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public: \
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Node( const value_type& value ) \
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: m_value( value ) {} \
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Node* next() { return static_cast<Node*>(m_next); } \
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\
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value_type m_value; \
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}; \
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\
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protected: \
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static void DeleteNode( _wxHashTable_NodeBase* node ) \
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{ \
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delete static_cast<Node*>(node); \
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} \
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public: \
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/* */ \
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/* forward iterator */ \
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/* */ \
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CLASSEXP Iterator \
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{ \
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public: \
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Node* m_node; \
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Self* m_ht; \
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\
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Iterator() : m_node(NULL), m_ht(NULL) {} \
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Iterator( Node* node, const Self* ht ) \
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: m_node(node), m_ht(const_cast<Self*>(ht)) {} \
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bool operator ==( const Iterator& it ) const \
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{ return m_node == it.m_node; } \
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bool operator !=( const Iterator& it ) const \
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{ return m_node != it.m_node; } \
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protected: \
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Node* GetNextNode() \
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{ \
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size_type bucket = GetBucketForNode(m_ht,m_node); \
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for( size_type i = bucket + 1; i < m_ht->m_tableBuckets; ++i ) \
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{ \
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if( m_ht->m_table[i] ) \
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return static_cast<Node*>(m_ht->m_table[i]); \
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} \
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return NULL; \
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} \
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\
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void PlusPlus() \
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{ \
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Node* next = m_node->next(); \
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m_node = next ? next : GetNextNode(); \
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} \
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}; \
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friend class Iterator; \
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\
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public: \
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CLASSEXP iterator : public Iterator \
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{ \
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public: \
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iterator() : Iterator() {} \
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iterator( Node* node, Self* ht ) : Iterator( node, ht ) {} \
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iterator& operator++() { PlusPlus(); return *this; } \
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iterator operator++(int) { iterator it=*this;PlusPlus();return it; } \
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reference operator *() const { return m_node->m_value; } \
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PTROPERATOR(pointer) \
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}; \
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\
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CLASSEXP const_iterator : public Iterator \
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{ \
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public: \
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const_iterator() : Iterator() {} \
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const_iterator(iterator i) : Iterator(i) {} \
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const_iterator( Node* node, const Self* ht ) \
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: Iterator(node, const_cast<Self*>(ht)) {} \
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const_iterator& operator++() { PlusPlus();return *this; } \
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const_iterator operator++(int) { const_iterator it=*this;PlusPlus();return it; } \
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const_reference operator *() const { return m_node->m_value; } \
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PTROPERATOR(const_pointer) \
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}; \
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\
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CLASSNAME( size_type sz = 10, const hasher& hfun = hasher(), \
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const key_equal& k_eq = key_equal(), \
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const key_extractor& k_ex = key_extractor() ) \
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: m_tableBuckets( GetNextPrime( (unsigned long) sz ) ), \
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m_items( 0 ), \
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m_hasher( hfun ), \
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m_equals( k_eq ), \
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m_getKey( k_ex ) \
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{ \
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m_table = (_wxHashTable_NodeBase**)AllocTable(m_tableBuckets); \
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} \
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\
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CLASSNAME( const Self& ht ) \
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: m_table(NULL), \
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m_tableBuckets( 0 ), \
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m_items( ht.m_items ), \
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m_hasher( ht.m_hasher ), \
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m_equals( ht.m_equals ), \
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m_getKey( ht.m_getKey ) \
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{ \
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HashCopy( ht ); \
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} \
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\
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const Self& operator=( const Self& ht ) \
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{ \
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if (&ht != this) \
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{ \
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clear(); \
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m_hasher = ht.m_hasher; \
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m_equals = ht.m_equals; \
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m_getKey = ht.m_getKey; \
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m_items = ht.m_items; \
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HashCopy( ht ); \
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} \
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return *this; \
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} \
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\
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~CLASSNAME() \
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{ \
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clear(); \
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\
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FreeTable(m_table); \
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} \
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\
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hasher hash_funct() { return m_hasher; } \
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key_equal key_eq() { return m_equals; } \
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\
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/* removes all elements from the hash table, but does not */ \
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/* shrink it ( perhaps it should ) */ \
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void clear() \
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{ \
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DeleteNodes(m_tableBuckets, m_table, DeleteNode); \
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m_items = 0; \
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} \
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\
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size_type size() const { return m_items; } \
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size_type max_size() const { return size_type(-1); } \
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bool empty() const { return size() == 0; } \
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\
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const_iterator end() const { return const_iterator(NULL, this); } \
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iterator end() { return iterator(NULL, this); } \
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const_iterator begin() const \
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{ return const_iterator(static_cast<Node*>(GetFirstNode(m_tableBuckets, m_table)), this); } \
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iterator begin() \
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{ return iterator(static_cast<Node*>(GetFirstNode(m_tableBuckets, m_table)), this); } \
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\
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size_type erase( const const_key_type& key ) \
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{ \
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_wxHashTable_NodeBase** node = GetNodePtr(key); \
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\
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if( !node ) \
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return 0; \
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\
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--m_items; \
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_wxHashTable_NodeBase* temp = (*node)->m_next; \
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delete static_cast<Node*>(*node); \
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(*node) = temp; \
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if( SHOULD_SHRINK( m_tableBuckets, m_items ) ) \
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ResizeTable( GetPreviousPrime( (unsigned long) m_tableBuckets ) - 1 ); \
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return 1; \
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} \
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\
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protected: \
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static size_type GetBucketForNode( Self* ht, Node* node ) \
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{ \
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return ht->m_hasher( ht->m_getKey( node->m_value ) ) \
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% ht->m_tableBuckets; \
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} \
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static Node* CopyNode( Node* node ) { return new Node( *node ); } \
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\
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Node* GetOrCreateNode( const value_type& value, bool& created ) \
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{ \
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const const_key_type& key = m_getKey( value ); \
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size_t bucket = m_hasher( key ) % m_tableBuckets; \
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Node* node = static_cast<Node*>(m_table[bucket]); \
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\
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while( node ) \
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{ \
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if( m_equals( m_getKey( node->m_value ), key ) ) \
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{ \
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created = false; \
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return node; \
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} \
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node = node->next(); \
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} \
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created = true; \
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return CreateNode( value, bucket); \
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}\
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Node * CreateNode( const value_type& value, size_t bucket ) \
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{\
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Node* node = new Node( value ); \
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node->m_next = m_table[bucket]; \
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m_table[bucket] = node; \
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\
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/* must be after the node is inserted */ \
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++m_items; \
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if( SHOULD_GROW( m_tableBuckets, m_items ) ) \
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ResizeTable( m_tableBuckets ); \
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\
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return node; \
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} \
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void CreateNode( const value_type& value ) \
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{\
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CreateNode(value, m_hasher( m_getKey(value) ) % m_tableBuckets ); \
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}\
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\
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/* returns NULL if not found */ \
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_wxHashTable_NodeBase** GetNodePtr(const const_key_type& key) const \
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{ \
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size_t bucket = m_hasher( key ) % m_tableBuckets; \
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_wxHashTable_NodeBase** node = &m_table[bucket]; \
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\
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while( *node ) \
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{ \
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if (m_equals(m_getKey(static_cast<Node*>(*node)->m_value), key)) \
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return node; \
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node = &(*node)->m_next; \
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} \
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\
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return NULL; \
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} \
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\
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/* returns NULL if not found */ \
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/* expressing it in terms of GetNodePtr is 5-8% slower :-( */ \
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Node* GetNode( const const_key_type& key ) const \
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{ \
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size_t bucket = m_hasher( key ) % m_tableBuckets; \
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Node* node = static_cast<Node*>(m_table[bucket]); \
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\
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while( node ) \
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{ \
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if( m_equals( m_getKey( node->m_value ), key ) ) \
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return node; \
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node = node->next(); \
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} \
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\
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return NULL; \
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} \
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\
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void ResizeTable( size_t newSize ) \
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{ \
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newSize = GetNextPrime( (unsigned long)newSize ); \
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_wxHashTable_NodeBase** srcTable = m_table; \
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size_t srcBuckets = m_tableBuckets; \
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m_table = (_wxHashTable_NodeBase**)AllocTable( newSize ); \
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m_tableBuckets = newSize; \
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\
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CopyHashTable( srcTable, srcBuckets, \
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this, m_table, \
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(BucketFromNode)GetBucketForNode,\
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(ProcessNode)&DummyProcessNode ); \
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FreeTable(srcTable); \
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} \
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\
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/* this must be called _after_ m_table has been cleaned */ \
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void HashCopy( const Self& ht ) \
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{ \
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ResizeTable( ht.size() ); \
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CopyHashTable( ht.m_table, ht.m_tableBuckets, \
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(_wxHashTableBase2*)this, \
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m_table, \
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(BucketFromNode)GetBucketForNode, \
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(ProcessNode)CopyNode ); \
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} \
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};
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// defines an STL-like pair class CLASSNAME storing two fields: first of type
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// KEY_T and second of type VALUE_T
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#define _WX_DECLARE_PAIR( KEY_T, VALUE_T, CLASSNAME, CLASSEXP ) \
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CLASSEXP CLASSNAME \
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{ \
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public: \
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typedef KEY_T first_type; \
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typedef VALUE_T second_type; \
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typedef KEY_T t1; \
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typedef VALUE_T t2; \
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typedef const KEY_T const_t1; \
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typedef const VALUE_T const_t2; \
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\
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CLASSNAME(const const_t1& f, const const_t2& s) \
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: first(const_cast<t1&>(f)), second(const_cast<t2&>(s)) {} \
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\
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t1 first; \
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t2 second; \
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};
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// defines the class CLASSNAME returning the key part (of type KEY_T) from a
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// pair of type PAIR_T
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#define _WX_DECLARE_HASH_MAP_KEY_EX( KEY_T, PAIR_T, CLASSNAME, CLASSEXP ) \
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CLASSEXP CLASSNAME \
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{ \
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typedef KEY_T key_type; \
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typedef PAIR_T pair_type; \
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typedef const key_type const_key_type; \
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typedef const pair_type const_pair_type; \
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typedef const_key_type& const_key_reference; \
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typedef const_pair_type& const_pair_reference; \
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public: \
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CLASSNAME() { } \
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const_key_reference operator()( const_pair_reference pair ) const { return pair.first; }\
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\
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/* the dummy assignment operator is needed to suppress compiler */ \
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/* warnings from hash table class' operator=(): gcc complains about */ \
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/* "statement with no effect" without it */ \
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CLASSNAME& operator=(const CLASSNAME&) { return *this; } \
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};
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// grow/shrink predicates
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inline bool never_grow( size_t, size_t ) { return false; }
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inline bool never_shrink( size_t, size_t ) { return false; }
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inline bool grow_lf70( size_t buckets, size_t items )
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{
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return float(items)/float(buckets) >= 0.85f;
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}
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#endif // various hash map implementations
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// ----------------------------------------------------------------------------
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// hashing and comparison functors
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// ----------------------------------------------------------------------------
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// NB: implementation detail: all of these classes must have dummy assignment
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// operators to suppress warnings about "statement with no effect" from gcc
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// in the hash table class assignment operator (where they're assigned)
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#ifndef wxNEEDS_WX_HASH_MAP
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// integer types
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struct WXDLLIMPEXP_BASE wxIntegerHash
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{
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private:
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WX_HASH_MAP_NAMESPACE::hash<long> longHash;
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WX_HASH_MAP_NAMESPACE::hash<unsigned long> ulongHash;
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WX_HASH_MAP_NAMESPACE::hash<int> intHash;
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WX_HASH_MAP_NAMESPACE::hash<unsigned int> uintHash;
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WX_HASH_MAP_NAMESPACE::hash<short> shortHash;
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WX_HASH_MAP_NAMESPACE::hash<unsigned short> ushortHash;
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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// hash<wxLongLong_t> ought to work but doesn't on some compilers
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#if (!defined SIZEOF_LONG_LONG && SIZEOF_LONG == 4) \
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|| (defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG * 2)
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size_t longlongHash( wxLongLong_t x ) const
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{
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return longHash( wx_truncate_cast(long, x) ) ^
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longHash( wx_truncate_cast(long, x >> (sizeof(long) * 8)) );
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}
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#elif defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG
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WX_HASH_MAP_NAMESPACE::hash<long> longlongHash;
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#else
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WX_HASH_MAP_NAMESPACE::hash<wxLongLong_t> longlongHash;
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#endif
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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public:
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wxIntegerHash() { }
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size_t operator()( long x ) const { return longHash( x ); }
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size_t operator()( unsigned long x ) const { return ulongHash( x ); }
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size_t operator()( int x ) const { return intHash( x ); }
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size_t operator()( unsigned int x ) const { return uintHash( x ); }
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size_t operator()( short x ) const { return shortHash( x ); }
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size_t operator()( unsigned short x ) const { return ushortHash( x ); }
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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size_t operator()( wxLongLong_t x ) const { return longlongHash(x); }
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size_t operator()( wxULongLong_t x ) const { return longlongHash(x); }
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
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};
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#else // wxNEEDS_WX_HASH_MAP
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// integer types
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struct WXDLLIMPEXP_BASE wxIntegerHash
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{
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wxIntegerHash() { }
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unsigned long operator()( long x ) const { return (unsigned long)x; }
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unsigned long operator()( unsigned long x ) const { return x; }
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unsigned long operator()( int x ) const { return (unsigned long)x; }
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unsigned long operator()( unsigned int x ) const { return x; }
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unsigned long operator()( short x ) const { return (unsigned long)x; }
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unsigned long operator()( unsigned short x ) const { return x; }
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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wxULongLong_t operator()( wxLongLong_t x ) const { return static_cast<wxULongLong_t>(x); }
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wxULongLong_t operator()( wxULongLong_t x ) const { return x; }
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
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};
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#endif // !wxNEEDS_WX_HASH_MAP/wxNEEDS_WX_HASH_MAP
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struct WXDLLIMPEXP_BASE wxIntegerEqual
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{
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wxIntegerEqual() { }
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bool operator()( long a, long b ) const { return a == b; }
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bool operator()( unsigned long a, unsigned long b ) const { return a == b; }
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bool operator()( int a, int b ) const { return a == b; }
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bool operator()( unsigned int a, unsigned int b ) const { return a == b; }
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bool operator()( short a, short b ) const { return a == b; }
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bool operator()( unsigned short a, unsigned short b ) const { return a == b; }
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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bool operator()( wxLongLong_t a, wxLongLong_t b ) const { return a == b; }
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bool operator()( wxULongLong_t a, wxULongLong_t b ) const { return a == b; }
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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wxIntegerEqual& operator=(const wxIntegerEqual&) { return *this; }
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};
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// pointers
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struct WXDLLIMPEXP_BASE wxPointerHash
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{
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wxPointerHash() { }
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#ifdef wxNEEDS_WX_HASH_MAP
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wxUIntPtr operator()( const void* k ) const { return wxPtrToUInt(k); }
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#else
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size_t operator()( const void* k ) const { return (size_t)k; }
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#endif
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wxPointerHash& operator=(const wxPointerHash&) { return *this; }
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};
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struct WXDLLIMPEXP_BASE wxPointerEqual
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{
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wxPointerEqual() { }
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bool operator()( const void* a, const void* b ) const { return a == b; }
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wxPointerEqual& operator=(const wxPointerEqual&) { return *this; }
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};
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// wxString, char*, wchar_t*
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struct WXDLLIMPEXP_BASE wxStringHash
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{
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wxStringHash() {}
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unsigned long operator()( const wxString& x ) const
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{ return stringHash( x.wx_str() ); }
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unsigned long operator()( const wchar_t* x ) const
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{ return stringHash( x ); }
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unsigned long operator()( const char* x ) const
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{ return stringHash( x ); }
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#if WXWIN_COMPATIBILITY_2_8
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static unsigned long wxCharStringHash( const wxChar* x )
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{ return stringHash(x); }
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#if wxUSE_UNICODE
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static unsigned long charStringHash( const char* x )
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{ return stringHash(x); }
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#endif
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#endif // WXWIN_COMPATIBILITY_2_8
|
|
|
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static unsigned long stringHash( const wchar_t* );
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static unsigned long stringHash( const char* );
|
|
|
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wxStringHash& operator=(const wxStringHash&) { return *this; }
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};
|
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|
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struct WXDLLIMPEXP_BASE wxStringEqual
|
|
{
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wxStringEqual() {}
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bool operator()( const wxString& a, const wxString& b ) const
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{ return a == b; }
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bool operator()( const wxChar* a, const wxChar* b ) const
|
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{ return wxStrcmp( a, b ) == 0; }
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#if wxUSE_UNICODE
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bool operator()( const char* a, const char* b ) const
|
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{ return strcmp( a, b ) == 0; }
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#endif // wxUSE_UNICODE
|
|
|
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wxStringEqual& operator=(const wxStringEqual&) { return *this; }
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};
|
|
|
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#ifdef wxNEEDS_WX_HASH_MAP
|
|
|
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#define wxPTROP_NORMAL(pointer) \
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pointer operator ->() const { return &(m_node->m_value); }
|
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#define wxPTROP_NOP(pointer)
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#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
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_WX_DECLARE_PAIR( KEY_T, VALUE_T, CLASSNAME##_wxImplementation_Pair, CLASSEXP ) \
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_WX_DECLARE_HASH_MAP_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_Pair, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \
|
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_WX_DECLARE_HASHTABLE( CLASSNAME##_wxImplementation_Pair, KEY_T, HASH_T, \
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CLASSNAME##_wxImplementation_KeyEx, KEY_EQ_T, wxPTROP_NORMAL, \
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CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \
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CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \
|
|
{ \
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|
public: \
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typedef VALUE_T mapped_type; \
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_WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \
|
|
\
|
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explicit CLASSNAME( size_type hint = 100, hasher hf = hasher(), \
|
|
key_equal eq = key_equal() ) \
|
|
: CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, \
|
|
CLASSNAME##_wxImplementation_KeyEx() ) {} \
|
|
\
|
|
mapped_type& operator[]( const const_key_type& key ) \
|
|
{ \
|
|
bool created; \
|
|
return GetOrCreateNode( \
|
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CLASSNAME##_wxImplementation_Pair( key, mapped_type() ), \
|
|
created)->m_value.second; \
|
|
} \
|
|
\
|
|
const_iterator find( const const_key_type& key ) const \
|
|
{ \
|
|
return const_iterator( GetNode( key ), this ); \
|
|
} \
|
|
\
|
|
iterator find( const const_key_type& key ) \
|
|
{ \
|
|
return iterator( GetNode( key ), this ); \
|
|
} \
|
|
\
|
|
Insert_Result insert( const value_type& v ) \
|
|
{ \
|
|
bool created; \
|
|
Node *node = GetOrCreateNode( \
|
|
CLASSNAME##_wxImplementation_Pair( v.first, v.second ), \
|
|
created); \
|
|
return Insert_Result(iterator(node, this), created); \
|
|
} \
|
|
\
|
|
size_type erase( const key_type& k ) \
|
|
{ return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \
|
|
void erase( const iterator& it ) { erase( (*it).first ); } \
|
|
\
|
|
/* count() == 0 | 1 */ \
|
|
size_type count( const const_key_type& key ) \
|
|
{ \
|
|
return GetNode( key ) ? 1u : 0u; \
|
|
} \
|
|
}
|
|
|
|
#endif // wxNEEDS_WX_HASH_MAP
|
|
|
|
// these macros are to be used in the user code
|
|
#define WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME) \
|
|
_WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, class )
|
|
|
|
#define WX_DECLARE_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \
|
|
_WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \
|
|
CLASSNAME, class )
|
|
|
|
#define WX_DECLARE_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \
|
|
_WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \
|
|
CLASSNAME, class )
|
|
|
|
// and these do exactly the same thing but should be used inside the
|
|
// library
|
|
#define WX_DECLARE_HASH_MAP_WITH_DECL( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL) \
|
|
_WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, DECL )
|
|
|
|
#define WX_DECLARE_EXPORTED_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME) \
|
|
WX_DECLARE_HASH_MAP_WITH_DECL( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, \
|
|
CLASSNAME, class WXDLLIMPEXP_CORE )
|
|
|
|
#define WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
|
|
_WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \
|
|
CLASSNAME, DECL )
|
|
|
|
#define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \
|
|
WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \
|
|
class WXDLLIMPEXP_CORE )
|
|
|
|
#define WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
|
|
_WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \
|
|
CLASSNAME, DECL )
|
|
|
|
#define WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \
|
|
WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \
|
|
class WXDLLIMPEXP_CORE )
|
|
|
|
// delete all hash elements
|
|
//
|
|
// NB: the class declaration of the hash elements must be visible from the
|
|
// place where you use this macro, otherwise the proper destructor may not
|
|
// be called (a decent compiler should give a warning about it, but don't
|
|
// count on it)!
|
|
#define WX_CLEAR_HASH_MAP(type, hashmap) \
|
|
{ \
|
|
type::iterator it, en; \
|
|
for( it = (hashmap).begin(), en = (hashmap).end(); it != en; ++it ) \
|
|
delete it->second; \
|
|
(hashmap).clear(); \
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Declarations of common hashmap classes
|
|
|
|
WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual,
|
|
wxLongToLongHashMap, class WXDLLIMPEXP_BASE );
|
|
|
|
WX_DECLARE_STRING_HASH_MAP_WITH_DECL( wxString, wxStringToStringHashMap,
|
|
class WXDLLIMPEXP_BASE );
|
|
|
|
WX_DECLARE_STRING_HASH_MAP_WITH_DECL( wxUIntPtr, wxStringToNumHashMap,
|
|
class WXDLLIMPEXP_BASE );
|
|
|
|
|
|
#endif // _WX_HASHMAP_H_
|