6efd3b4438
Add more wxNOEXCEPT to hash-related classes to avoid warnings like
.../c++/bits/hashtable_policy.h: In instantiation of ‘std::__detail::_Hashtable_ebo_helper<_Nm, _Tp, true>::_Hashtable_ebo_helper() [with int _Nm = 1; _Tp = wxStringHash]’:
include/wx/clntdata.h:33:22: recursively required from ‘std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = wxString; _Tp = int (*)(void*, void*); _Hash = wxStringHash; _Pred = wxStringEqual; _Alloc = std::allocator<std::pair<const wxString, int (*)(void*, void*)> >]’
include/wx/clntdata.h:33:22: required from here
.../c++/bits/hashtable_policy.h:1112:40: error: noexcept-expression evaluates to ‘false’ because of a call to ‘wxStringHash::wxStringHash()’ [-Werror=noexcept]
1112 | _Hashtable_ebo_helper() noexcept(noexcept(_Tp())) : _Tp() { }
| ^~~~~~~~~~~~~~~
In file included from include/wx/clntdata.h:16,
from include/wx/event.h:17,
from include/wx/evtloop.h:14,
from tests/testprec.h:5,
from tests/allheaders.cpp:410:
include/wx/hashmap.h:568:5: note: but ‘wxStringHash::wxStringHash()’ does not throw; perhaps it should be declared ‘noexcept’
568 | wxStringHash() {}
| ^~~~~~~~~~~~
that started to be given my MinGW x86-64 10.3.9 (although they were not
given by 10.2.1 version of the same compiler).
But adding wxNOEXCEPT here is more consistent with the changes of
7d74df9a03 (Add wxNOEXCEPT to the hash structs operator() declarations,
2020-08-30) and makes sense anyhow.
733 lines
26 KiB
C++
733 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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|
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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
|
|
#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: \
|
|
CLASSNAME() { } \
|
|
const_key_reference operator()( const_pair_reference pair ) const { return pair.first; }\
|
|
};
|
|
|
|
// grow/shrink predicates
|
|
inline bool never_grow( size_t, size_t ) { return false; }
|
|
inline bool never_shrink( size_t, size_t ) { return false; }
|
|
inline bool grow_lf70( size_t buckets, size_t items )
|
|
{
|
|
return float(items)/float(buckets) >= 0.85f;
|
|
}
|
|
|
|
#endif // various hash map implementations
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// hashing and comparison functors
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#ifndef wxNEEDS_WX_HASH_MAP
|
|
|
|
// integer types
|
|
struct WXDLLIMPEXP_BASE wxIntegerHash
|
|
{
|
|
private:
|
|
WX_HASH_MAP_NAMESPACE::hash<long> longHash;
|
|
WX_HASH_MAP_NAMESPACE::hash<unsigned long> ulongHash;
|
|
WX_HASH_MAP_NAMESPACE::hash<int> intHash;
|
|
WX_HASH_MAP_NAMESPACE::hash<unsigned int> uintHash;
|
|
WX_HASH_MAP_NAMESPACE::hash<short> shortHash;
|
|
WX_HASH_MAP_NAMESPACE::hash<unsigned short> ushortHash;
|
|
|
|
#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
// hash<wxLongLong_t> ought to work but doesn't on some compilers
|
|
#if (!defined SIZEOF_LONG_LONG && SIZEOF_LONG == 4) \
|
|
|| (defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG * 2)
|
|
size_t longlongHash( wxLongLong_t x ) const
|
|
{
|
|
return longHash( wx_truncate_cast(long, x) ) ^
|
|
longHash( wx_truncate_cast(long, x >> (sizeof(long) * 8)) );
|
|
}
|
|
#elif defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG
|
|
WX_HASH_MAP_NAMESPACE::hash<long> longlongHash;
|
|
#else
|
|
WX_HASH_MAP_NAMESPACE::hash<wxLongLong_t> longlongHash;
|
|
#endif
|
|
#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
|
|
public:
|
|
wxIntegerHash() wxNOEXCEPT { }
|
|
size_t operator()( long x ) const wxNOEXCEPT { return longHash( x ); }
|
|
size_t operator()( unsigned long x ) const wxNOEXCEPT { return ulongHash( x ); }
|
|
size_t operator()( int x ) const wxNOEXCEPT { return intHash( x ); }
|
|
size_t operator()( unsigned int x ) const wxNOEXCEPT { return uintHash( x ); }
|
|
size_t operator()( short x ) const wxNOEXCEPT { return shortHash( x ); }
|
|
size_t operator()( unsigned short x ) const wxNOEXCEPT { return ushortHash( x ); }
|
|
#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
size_t operator()( wxLongLong_t x ) const wxNOEXCEPT { return longlongHash(x); }
|
|
size_t operator()( wxULongLong_t x ) const wxNOEXCEPT { return longlongHash(x); }
|
|
#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
};
|
|
|
|
#else // wxNEEDS_WX_HASH_MAP
|
|
|
|
// integer types
|
|
struct WXDLLIMPEXP_BASE wxIntegerHash
|
|
{
|
|
wxIntegerHash() wxNOEXCEPT { }
|
|
unsigned long operator()( long x ) const wxNOEXCEPT { return (unsigned long)x; }
|
|
unsigned long operator()( unsigned long x ) const wxNOEXCEPT { return x; }
|
|
unsigned long operator()( int x ) const wxNOEXCEPT { return (unsigned long)x; }
|
|
unsigned long operator()( unsigned int x ) const wxNOEXCEPT { return x; }
|
|
unsigned long operator()( short x ) const wxNOEXCEPT { return (unsigned long)x; }
|
|
unsigned long operator()( unsigned short x ) const wxNOEXCEPT { return x; }
|
|
#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
wxULongLong_t operator()( wxLongLong_t x ) const wxNOEXCEPT { return static_cast<wxULongLong_t>(x); }
|
|
wxULongLong_t operator()( wxULongLong_t x ) const wxNOEXCEPT { return x; }
|
|
#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
};
|
|
|
|
#endif // !wxNEEDS_WX_HASH_MAP/wxNEEDS_WX_HASH_MAP
|
|
|
|
struct WXDLLIMPEXP_BASE wxIntegerEqual
|
|
{
|
|
wxIntegerEqual() wxNOEXCEPT { }
|
|
bool operator()( long a, long b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( unsigned long a, unsigned long b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( int a, int b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( unsigned int a, unsigned int b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( short a, short b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( unsigned short a, unsigned short b ) const wxNOEXCEPT { return a == b; }
|
|
#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
bool operator()( wxLongLong_t a, wxLongLong_t b ) const wxNOEXCEPT { return a == b; }
|
|
bool operator()( wxULongLong_t a, wxULongLong_t b ) const wxNOEXCEPT { return a == b; }
|
|
#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
|
|
};
|
|
|
|
// pointers
|
|
struct WXDLLIMPEXP_BASE wxPointerHash
|
|
{
|
|
wxPointerHash() wxNOEXCEPT { }
|
|
|
|
#ifdef wxNEEDS_WX_HASH_MAP
|
|
wxUIntPtr operator()( const void* k ) const wxNOEXCEPT { return wxPtrToUInt(k); }
|
|
#else
|
|
size_t operator()( const void* k ) const wxNOEXCEPT { return (size_t)k; }
|
|
#endif
|
|
};
|
|
|
|
struct WXDLLIMPEXP_BASE wxPointerEqual
|
|
{
|
|
wxPointerEqual() wxNOEXCEPT { }
|
|
bool operator()( const void* a, const void* b ) const wxNOEXCEPT { return a == b; }
|
|
};
|
|
|
|
// wxString, char*, wchar_t*
|
|
struct WXDLLIMPEXP_BASE wxStringHash
|
|
{
|
|
wxStringHash() wxNOEXCEPT {}
|
|
unsigned long operator()( const wxString& x ) const wxNOEXCEPT
|
|
{ return stringHash( x.wx_str() ); }
|
|
unsigned long operator()( const wchar_t* x ) const wxNOEXCEPT
|
|
{ return stringHash( x ); }
|
|
unsigned long operator()( const char* x ) const wxNOEXCEPT
|
|
{ return stringHash( x ); }
|
|
|
|
#if WXWIN_COMPATIBILITY_2_8
|
|
static unsigned long wxCharStringHash( const wxChar* x )
|
|
{ return stringHash(x); }
|
|
#if wxUSE_UNICODE
|
|
static unsigned long charStringHash( const char* x )
|
|
{ return stringHash(x); }
|
|
#endif
|
|
#endif // WXWIN_COMPATIBILITY_2_8
|
|
|
|
static unsigned long stringHash( const wchar_t* );
|
|
static unsigned long stringHash( const char* );
|
|
};
|
|
|
|
struct WXDLLIMPEXP_BASE wxStringEqual
|
|
{
|
|
wxStringEqual() wxNOEXCEPT {}
|
|
bool operator()( const wxString& a, const wxString& b ) const wxNOEXCEPT
|
|
{ return a == b; }
|
|
bool operator()( const wxChar* a, const wxChar* b ) const wxNOEXCEPT
|
|
{ return wxStrcmp( a, b ) == 0; }
|
|
#if wxUSE_UNICODE
|
|
bool operator()( const char* a, const char* b ) const wxNOEXCEPT
|
|
{ return strcmp( a, b ) == 0; }
|
|
#endif // wxUSE_UNICODE
|
|
};
|
|
|
|
#ifdef wxNEEDS_WX_HASH_MAP
|
|
|
|
#define wxPTROP_NORMAL(pointer) \
|
|
pointer operator ->() const { return &(m_node->m_value); }
|
|
#define wxPTROP_NOP(pointer)
|
|
|
|
#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
|
|
_WX_DECLARE_PAIR( KEY_T, VALUE_T, CLASSNAME##_wxImplementation_Pair, CLASSEXP ) \
|
|
_WX_DECLARE_HASH_MAP_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_Pair, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \
|
|
_WX_DECLARE_HASHTABLE( CLASSNAME##_wxImplementation_Pair, KEY_T, HASH_T, \
|
|
CLASSNAME##_wxImplementation_KeyEx, KEY_EQ_T, wxPTROP_NORMAL, \
|
|
CLASSNAME##_wxImplementation_HashTable, CLASSEXP, grow_lf70, never_shrink ) \
|
|
CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \
|
|
{ \
|
|
public: \
|
|
typedef VALUE_T mapped_type; \
|
|
_WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \
|
|
\
|
|
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( \
|
|
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
|
|
// note: DECL is not used since the class is inline
|
|
#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, class )
|
|
|
|
#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 )
|
|
|
|
// note: DECL is not used since the class is inline
|
|
#define WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
|
|
_WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \
|
|
CLASSNAME, class )
|
|
|
|
#define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \
|
|
WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \
|
|
class WXDLLIMPEXP_CORE )
|
|
|
|
// note: DECL is not used since the class is inline
|
|
#define WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
|
|
_WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \
|
|
CLASSNAME, class )
|
|
|
|
#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_
|