X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bfe1edbddba7ab2ffc59d0d13252dfc03d609bd6..a18d02ecd20d33810e380605ee3ec641668176b6:/include/wx/hashmap.h diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h index ad8005c31c..1c11d75f80 100644 --- a/include/wx/hashmap.h +++ b/include/wx/hashmap.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: hashmap.h +// Name: wx/hashmap.h // Purpose: wxHashMap class // Author: Mattia Barbon // Modified by: @@ -13,13 +13,36 @@ #define _WX_HASHMAP_H_ #include "wx/string.h" +#include "wx/wxcrt.h" + +// In wxUSE_STL build we prefer to use the standard hash map class but it can +// be either in non-standard hash_map header (old g++ and some other STL +// implementations) or in C++0x standard unordered_map which can in turn be +// available either in std::tr1 or std namespace itself +// +// To summarize: if std::unordered_map is available use it, otherwise use tr1 +// and finally fall back to non-standard hash_map #if (defined(HAVE_EXT_HASH_MAP) || defined(HAVE_HASH_MAP)) \ && (defined(HAVE_GNU_CXX_HASH_MAP) || defined(HAVE_STD_HASH_MAP)) #define HAVE_STL_HASH_MAP #endif -#if wxUSE_STL && defined(HAVE_STL_HASH_MAP) +#if wxUSE_STL && \ + (defined(HAVE_STD_UNORDERED_MAP) || defined(HAVE_TR1_UNORDERED_MAP)) + +#if defined(HAVE_STD_UNORDERED_MAP) + #include + #define WX_HASH_MAP_NAMESPACE std +#elif defined(HAVE_TR1_UNORDERED_MAP) + #include + #define WX_HASH_MAP_NAMESPACE std::tr1 +#endif + +#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \ + typedef WX_HASH_MAP_NAMESPACE::unordered_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME + +#elif wxUSE_STL && defined(HAVE_STL_HASH_MAP) #if defined(HAVE_EXT_HASH_MAP) #include @@ -34,10 +57,11 @@ #endif #define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \ - typedef WX_HASH_MAP_NAMESPACE::hash_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME; + typedef WX_HASH_MAP_NAMESPACE::hash_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME -#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#else // !wxUSE_STL || no std::{hash,unordered}_map class available +#define wxNEEDS_WX_HASH_MAP #ifdef __WXWINCE__ typedef int ptrdiff_t; @@ -48,9 +72,9 @@ typedef int ptrdiff_t; // private struct WXDLLIMPEXP_BASE _wxHashTable_NodeBase { - _wxHashTable_NodeBase() : m_nxt(0) {} + _wxHashTable_NodeBase() : m_next(NULL) {} - _wxHashTable_NodeBase* m_nxt; + _wxHashTable_NodeBase* m_next; // Cannot do this: // DECLARE_NO_COPY_CLASS(_wxHashTable_NodeBase) @@ -74,7 +98,7 @@ protected: for( size_t i = 0; i < buckets; ++i ) if( table[i] ) return table[i]; - return 0; + return NULL; } // as static const unsigned prime_count = 31 but works with all compilers @@ -122,11 +146,10 @@ public: \ typedef const KEY_T const_key_type; \ typedef const VALUE_T const_mapped_type; \ public: \ - struct Node; \ typedef KEY_EX_T key_extractor; \ typedef CLASSNAME Self; \ protected: \ - Node** m_table; \ + _wxHashTable_NodeBase** m_table; \ size_t m_tableBuckets; \ size_t m_items; \ hasher m_hasher; \ @@ -138,17 +161,15 @@ public: \ public: \ Node( const value_type& value ) \ : m_value( value ) {} \ - Node* m_next() { return (Node*)this->m_nxt; } \ + Node* next() { return wx_static_cast(Node*, m_next); } \ \ value_type m_value; \ }; \ \ - CLASSEXP Iterator; \ - friend CLASSEXP Iterator; \ protected: \ static void DeleteNode( _wxHashTable_NodeBase* node ) \ { \ - delete (Node*)node; \ + delete wx_static_cast(Node*, node); \ } \ public: \ /* */ \ @@ -160,9 +181,9 @@ public: \ Node* m_node; \ Self* m_ht; \ \ - Iterator() : m_node(0), m_ht(0) {} \ + Iterator() : m_node(NULL), m_ht(NULL) {} \ Iterator( Node* node, const Self* ht ) \ - : m_node(node), m_ht((Self*)ht) {} \ + : m_node(node), m_ht(wx_const_cast(Self*, ht)) {} \ bool operator ==( const Iterator& it ) const \ { return m_node == it.m_node; } \ bool operator !=( const Iterator& it ) const \ @@ -174,17 +195,18 @@ public: \ for( size_type i = bucket + 1; i < m_ht->m_tableBuckets; ++i ) \ { \ if( m_ht->m_table[i] ) \ - return m_ht->m_table[i]; \ + return wx_static_cast(Node*, m_ht->m_table[i]); \ } \ - return 0; \ + return NULL; \ } \ \ void PlusPlus() \ { \ - Node* next = m_node->m_next(); \ + Node* next = m_node->next(); \ m_node = next ? next : GetNextNode(); \ } \ }; \ + friend class Iterator; \ \ public: \ CLASSEXP iterator : public Iterator \ @@ -202,8 +224,9 @@ public: \ { \ public: \ const_iterator() : Iterator() {} \ + const_iterator(iterator i) : Iterator(i) {} \ const_iterator( Node* node, const Self* ht ) \ - : Iterator( node, (Self*)ht ) {} \ + : Iterator(node, wx_const_cast(Self*, ht)) {} \ const_iterator& operator++() { PlusPlus();return *this; } \ const_iterator operator++(int) { const_iterator it=*this;PlusPlus();return it; } \ const_reference operator *() const { return m_node->m_value; } \ @@ -219,11 +242,11 @@ public: \ m_equals( k_eq ), \ m_getKey( k_ex ) \ { \ - m_table = (Node**)AllocTable( m_tableBuckets ); \ + m_table = (_wxHashTable_NodeBase**)AllocTable(m_tableBuckets); \ } \ \ CLASSNAME( const Self& ht ) \ - : m_table( 0 ), \ + : m_table(NULL), \ m_tableBuckets( 0 ), \ m_items( ht.m_items ), \ m_hasher( ht.m_hasher ), \ @@ -235,12 +258,15 @@ public: \ \ const Self& operator=( const Self& ht ) \ { \ - clear(); \ - m_hasher = ht.m_hasher; \ - m_equals = ht.m_equals; \ - m_getKey = ht.m_getKey; \ - m_items = ht.m_items; \ - HashCopy( ht ); \ + if (&ht != this) \ + { \ + clear(); \ + m_hasher = ht.m_hasher; \ + m_equals = ht.m_equals; \ + m_getKey = ht.m_getKey; \ + m_items = ht.m_items; \ + HashCopy( ht ); \ + } \ return *this; \ } \ \ @@ -258,8 +284,7 @@ public: \ /* shrink it ( perhaps it should ) */ \ void clear() \ { \ - DeleteNodes( m_tableBuckets, (_wxHashTable_NodeBase**)m_table, \ - DeleteNode ); \ + DeleteNodes(m_tableBuckets, m_table, DeleteNode); \ m_items = 0; \ } \ \ @@ -267,23 +292,23 @@ public: \ size_type max_size() const { return size_type(-1); } \ bool empty() const { return size() == 0; } \ \ - const_iterator end() const { return const_iterator( 0, this ); } \ - iterator end() { return iterator( 0, this ); } \ + const_iterator end() const { return const_iterator(NULL, this); } \ + iterator end() { return iterator(NULL, this); } \ const_iterator begin() const \ - { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \ + { return const_iterator(wx_static_cast(Node*, GetFirstNode(m_tableBuckets, m_table)), this); } \ iterator begin() \ - { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \ + { return iterator(wx_static_cast(Node*, GetFirstNode(m_tableBuckets, m_table)), this); } \ \ size_type erase( const const_key_type& key ) \ { \ - Node** node = GetNodePtr( key ); \ + _wxHashTable_NodeBase** node = GetNodePtr(key); \ \ if( !node ) \ return 0; \ \ --m_items; \ - Node* temp = (*node)->m_next(); \ - delete *node; \ + _wxHashTable_NodeBase* temp = (*node)->m_next; \ + delete wx_static_cast(Node*, *node); \ (*node) = temp; \ if( SHOULD_SHRINK( m_tableBuckets, m_items ) ) \ ResizeTable( GetPreviousPrime( (unsigned long) m_tableBuckets ) - 1 ); \ @@ -302,7 +327,7 @@ protected: \ { \ const const_key_type& key = m_getKey( value ); \ size_t bucket = m_hasher( key ) % m_tableBuckets; \ - Node* node = m_table[bucket]; \ + Node* node = wx_static_cast(Node*, m_table[bucket]); \ \ while( node ) \ { \ @@ -311,7 +336,7 @@ protected: \ created = false; \ return node; \ } \ - node = node->m_next(); \ + node = node->next(); \ } \ created = true; \ return CreateNode( value, bucket); \ @@ -319,7 +344,7 @@ protected: \ Node * CreateNode( const value_type& value, size_t bucket ) \ {\ Node* node = new Node( value ); \ - node->m_nxt = m_table[bucket]; \ + node->m_next = m_table[bucket]; \ m_table[bucket] = node; \ \ /* must be after the node is inserted */ \ @@ -335,48 +360,48 @@ protected: \ }\ \ /* returns NULL if not found */ \ - Node** GetNodePtr( const const_key_type& key ) const \ + _wxHashTable_NodeBase** GetNodePtr(const const_key_type& key) const \ { \ - unsigned long hash = wx_static_cast(unsigned long, m_hasher( key )); \ - Node** node = &m_table[hash % m_tableBuckets]; \ + size_t bucket = m_hasher( key ) % m_tableBuckets; \ + _wxHashTable_NodeBase** node = &m_table[bucket]; \ \ while( *node ) \ { \ - if( m_equals( m_getKey( (*node)->m_value ), key ) ) \ + if (m_equals(m_getKey(wx_static_cast(Node*, *node)->m_value), key)) \ return node; \ - node = (Node**)&(*node)->m_nxt; \ + node = &(*node)->m_next; \ } \ \ - return 0; \ + return NULL; \ } \ \ /* returns NULL if not found */ \ /* expressing it in terms of GetNodePtr is 5-8% slower :-( */ \ Node* GetNode( const const_key_type& key ) const \ { \ - unsigned long hash = wx_static_cast(unsigned long, m_hasher( key )); \ - Node* node = m_table[hash % m_tableBuckets]; \ + size_t bucket = m_hasher( key ) % m_tableBuckets; \ + Node* node = wx_static_cast(Node*, m_table[bucket]); \ \ while( node ) \ { \ if( m_equals( m_getKey( node->m_value ), key ) ) \ return node; \ - node = node->m_next(); \ + node = node->next(); \ } \ \ - return 0; \ + return NULL; \ } \ \ void ResizeTable( size_t newSize ) \ { \ newSize = GetNextPrime( (unsigned long)newSize ); \ - Node** srcTable = m_table; \ + _wxHashTable_NodeBase** srcTable = m_table; \ size_t srcBuckets = m_tableBuckets; \ - m_table = (Node**)AllocTable( newSize ); \ + m_table = (_wxHashTable_NodeBase**)AllocTable( newSize ); \ m_tableBuckets = newSize; \ \ - CopyHashTable( (_wxHashTable_NodeBase**)srcTable, srcBuckets, \ - this, (_wxHashTable_NodeBase**)m_table, \ + CopyHashTable( srcTable, srcBuckets, \ + this, m_table, \ (BucketFromNode)GetBucketForNode,\ (ProcessNode)&DummyProcessNode ); \ FreeTable(srcTable); \ @@ -386,9 +411,9 @@ protected: \ void HashCopy( const Self& ht ) \ { \ ResizeTable( ht.size() ); \ - CopyHashTable( (_wxHashTable_NodeBase**)ht.m_table, ht.m_tableBuckets,\ + CopyHashTable( ht.m_table, ht.m_tableBuckets, \ (_wxHashTableBase2*)this, \ - (_wxHashTable_NodeBase**)m_table, \ + m_table, \ (BucketFromNode)GetBucketForNode, \ (ProcessNode)CopyNode ); \ } \ @@ -400,12 +425,15 @@ protected: \ CLASSEXP CLASSNAME \ { \ public: \ + typedef KEY_T first_type; \ + typedef VALUE_T second_type; \ typedef KEY_T t1; \ typedef VALUE_T t2; \ typedef const KEY_T const_t1; \ typedef const VALUE_T const_t2; \ \ - CLASSNAME( const const_t1& f, const const_t2& s ):first(t1(f)),second(t2(s)) {} \ + CLASSNAME(const const_t1& f, const const_t2& s) \ + : first(wx_const_cast(t1&, f)), second(wx_const_cast(t2&, s)) {} \ \ t1 first; \ t2 second; \ @@ -440,7 +468,7 @@ inline bool grow_lf70( size_t buckets, size_t items ) return float(items)/float(buckets) >= 0.85; } -#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#endif // various hash map implementations // ---------------------------------------------------------------------------- // hashing and comparison functors @@ -450,7 +478,7 @@ inline bool grow_lf70( size_t buckets, size_t items ) // operators to suppress warnings about "statement with no effect" from gcc // in the hash table class assignment operator (where they're assigned) -#if wxUSE_STL && defined(HAVE_STL_HASH_MAP) +#ifndef wxNEEDS_WX_HASH_MAP // integer types class WXDLLIMPEXP_BASE wxIntegerHash @@ -462,11 +490,21 @@ class WXDLLIMPEXP_BASE wxIntegerHash WX_HASH_MAP_NAMESPACE::hash shortHash; WX_HASH_MAP_NAMESPACE::hash ushortHash; +#if defined wxLongLong_t && !defined wxLongLongIsLong + // hash 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 longlongHash; + #else + WX_HASH_MAP_NAMESPACE::hash longlongHash; + #endif +#endif public: wxIntegerHash() { } @@ -484,7 +522,7 @@ public: wxIntegerHash& operator=(const wxIntegerHash&) { return *this; } }; -#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#else // wxNEEDS_WX_HASH_MAP // integer types class WXDLLIMPEXP_BASE wxIntegerHash @@ -505,7 +543,7 @@ public: wxIntegerHash& operator=(const wxIntegerHash&) { return *this; } }; -#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#endif // !wxNEEDS_WX_HASH_MAP/wxNEEDS_WX_HASH_MAP class WXDLLIMPEXP_BASE wxIntegerEqual { @@ -531,10 +569,10 @@ class WXDLLIMPEXP_BASE wxPointerHash public: wxPointerHash() { } -#if wxUSE_STL && defined(HAVE_STL_HASH_MAP) - size_t operator()( const void* k ) const { return (size_t)k; } -#else +#ifdef wxNEEDS_WX_HASH_MAP wxUIntPtr operator()( const void* k ) const { return wxPtrToUInt(k); } +#else + size_t operator()( const void* k ) const { return (size_t)k; } #endif wxPointerHash& operator=(const wxPointerHash&) { return *this; } @@ -549,21 +587,29 @@ public: wxPointerEqual& operator=(const wxPointerEqual&) { return *this; } }; -// wxString, char*, wxChar* +// wxString, char*, wchar_t* class WXDLLIMPEXP_BASE wxStringHash { public: wxStringHash() {} unsigned long operator()( const wxString& x ) const - { return wxCharStringHash( x.c_str() ); } - unsigned long operator()( const wxChar* x ) const - { return wxCharStringHash( x ); } - static unsigned long wxCharStringHash( const wxChar* ); -#if wxUSE_UNICODE + { return stringHash( x.wx_str() ); } + unsigned long operator()( const wchar_t* x ) const + { return stringHash( x ); } unsigned long operator()( const char* x ) const - { return charStringHash( x ); } - static unsigned long charStringHash( const char* ); -#endif // wxUSE_UNICODE + { 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* ); wxStringHash& operator=(const wxStringHash&) { return *this; } }; @@ -584,7 +630,7 @@ public: wxStringEqual& operator=(const wxStringEqual&) { return *this; } }; -#if !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#ifdef wxNEEDS_WX_HASH_MAP #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 ) \ @@ -637,10 +683,13 @@ public: \ \ /* count() == 0 | 1 */ \ size_type count( const const_key_type& key ) \ - { return GetNode( key ) ? 1 : 0; } \ + { \ + /* explicit cast needed to suppress CodeWarrior warnings */ \ + return (size_type)(GetNode( key ) ? 1 : 0); \ + } \ } -#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP) +#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) \ @@ -661,7 +710,7 @@ public: \ #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 WXDLLEXPORT ) + 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, \ @@ -669,7 +718,7 @@ public: \ #define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \ WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \ - class WXDLLEXPORT ) + class WXDLLIMPEXP_CORE ) #define WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \ _WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \ @@ -677,7 +726,7 @@ public: \ #define WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \ WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \ - class WXDLLEXPORT ) + class WXDLLIMPEXP_CORE ) // delete all hash elements // @@ -701,4 +750,3 @@ WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual, #endif // _WX_HASHMAP_H_ -