X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/77ffb5937e89927b621128789401db8921fe580f..c0d9b217a7dcec3b322390efcbc5c98615cd3f16:/include/wx/hashmap.h diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h index 4f608dd5b1..47d583b840 100644 --- a/include/wx/hashmap.h +++ b/include/wx/hashmap.h @@ -1,22 +1,19 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: hashmap.h +// Name: wx/hashmap.h // Purpose: wxHashMap class // Author: Mattia Barbon // Modified by: // Created: 29/01/2002 // RCS-ID: $Id$ // Copyright: (c) Mattia Barbon -// Licence: wxWidgets licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_HASHMAP_H_ #define _WX_HASHMAP_H_ -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) -#pragma interface "hashmap.h" -#endif - #include "wx/string.h" +#include "wx/wxcrt.h" #if (defined(HAVE_EXT_HASH_MAP) || defined(HAVE_HASH_MAP)) \ && (defined(HAVE_GNU_CXX_HASH_MAP) || defined(HAVE_STD_HASH_MAP)) @@ -38,14 +35,15 @@ #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) -#include // for ptrdiff_t #ifdef __WXWINCE__ typedef int ptrdiff_t; +#else +#include // for ptrdiff_t #endif // private @@ -100,6 +98,10 @@ protected: { return (void **)calloc(sz, sizeof(void*)); } + static void FreeTable(void *table) + { + free(table); + } }; #define _WX_DECLARE_HASHTABLE( VALUE_T, KEY_T, HASH_T, KEY_EX_T, KEY_EQ_T, CLASSNAME, CLASSEXP, SHOULD_GROW, SHOULD_SHRINK ) \ @@ -142,8 +144,6 @@ public: \ value_type m_value; \ }; \ \ - struct Iterator; \ - friend struct Iterator; \ protected: \ static void DeleteNode( _wxHashTable_NodeBase* node ) \ { \ @@ -153,8 +153,9 @@ public: \ /* */ \ /* forward iterator */ \ /* */ \ - struct Iterator \ + CLASSEXP Iterator \ { \ + public: \ Node* m_node; \ Self* m_ht; \ \ @@ -183,10 +184,12 @@ public: \ m_node = next ? next : GetNextNode(); \ } \ }; \ + friend class Iterator; \ \ public: \ - struct iterator:public Iterator \ + CLASSEXP iterator : public Iterator \ { \ + public: \ iterator() : Iterator() {} \ iterator( Node* node, Self* ht ) : Iterator( node, ht ) {} \ iterator& operator++() { PlusPlus(); return *this; } \ @@ -195,9 +198,11 @@ public: \ pointer operator ->() const { return &(m_node->m_value); } \ }; \ \ - struct const_iterator:public Iterator \ + CLASSEXP const_iterator : public Iterator \ { \ + public: \ const_iterator() : Iterator() {} \ + const_iterator(iterator i) : Iterator(i) {} \ const_iterator( Node* node, const Self* ht ) \ : Iterator( node, (Self*)ht ) {} \ const_iterator& operator++() { PlusPlus();return *this; } \ @@ -244,7 +249,7 @@ public: \ { \ clear(); \ \ - free(m_table); \ + FreeTable(m_table); \ } \ \ hasher hash_funct() { return m_hasher; } \ @@ -266,9 +271,9 @@ public: \ const_iterator end() const { return const_iterator( 0, this ); } \ iterator end() { return iterator( 0, this ); } \ const_iterator begin() const \ - { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \ + { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); } \ iterator begin() \ - { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \ + { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); } \ \ size_type erase( const const_key_type& key ) \ { \ @@ -294,7 +299,7 @@ protected: \ } \ static Node* CopyNode( Node* node ) { return new Node( *node ); } \ \ - Node* GetOrCreateNode( const value_type& value ) \ + Node* GetOrCreateNode( const value_type& value, bool& created ) \ { \ const const_key_type& key = m_getKey( value ); \ size_t bucket = m_hasher( key ) % m_tableBuckets; \ @@ -303,10 +308,14 @@ protected: \ while( node ) \ { \ if( m_equals( m_getKey( node->m_value ), key ) ) \ + { \ + created = false; \ return node; \ + } \ node = node->m_next(); \ } \ - return CreateNode( value , bucket); \ + created = true; \ + return CreateNode( value, bucket); \ }\ Node * CreateNode( const value_type& value, size_t bucket ) \ {\ @@ -329,25 +338,26 @@ protected: \ /* returns NULL if not found */ \ Node** GetNodePtr( const const_key_type& key ) const \ { \ - unsigned long hash = m_hasher( key ); \ - Node** node = &m_table[hash % m_tableBuckets]; \ + size_t bucket = m_hasher( key ) % m_tableBuckets; \ + Node** node = &m_table[bucket]; \ \ while( *node ) \ { \ if( m_equals( m_getKey( (*node)->m_value ), key ) ) \ return node; \ + /* Tell the compiler to not do any strict-aliasing assumptions with a void cast? Can we make such a runtime guarantee? */ \ node = (Node**)&(*node)->m_nxt; \ } \ \ - 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 = m_hasher( key ); \ - Node* node = m_table[hash % m_tableBuckets]; \ + size_t bucket = m_hasher( key ) % m_tableBuckets; \ + Node* node = m_table[bucket]; \ \ while( node ) \ { \ @@ -371,7 +381,7 @@ protected: \ this, (_wxHashTable_NodeBase**)m_table, \ (BucketFromNode)GetBucketForNode,\ (ProcessNode)&DummyProcessNode ); \ - free(srcTable); \ + FreeTable(srcTable); \ } \ \ /* this must be called _after_ m_table has been cleaned */ \ @@ -425,8 +435,8 @@ public: \ }; // 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 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) >= 0.85; @@ -453,6 +463,23 @@ class WXDLLIMPEXP_BASE wxIntegerHash WX_HASH_MAP_NAMESPACE::hash uintHash; 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() { } size_t operator()( long x ) const { return longHash( x ); } @@ -461,6 +488,10 @@ public: size_t operator()( unsigned int x ) const { return uintHash( x ); } size_t operator()( short x ) const { return shortHash( x ); } size_t operator()( unsigned short x ) const { return ushortHash( x ); } +#if defined wxLongLong_t && !defined wxLongLongIsLong + size_t operator()( wxLongLong_t x ) const { return longlongHash(x); } + size_t operator()( wxULongLong_t x ) const { return longlongHash(x); } +#endif wxIntegerHash& operator=(const wxIntegerHash&) { return *this; } }; @@ -478,6 +509,10 @@ public: unsigned long operator()( unsigned int x ) const { return x; } unsigned long operator()( short x ) const { return (unsigned long)x; } unsigned long operator()( unsigned short x ) const { return x; } +#if defined wxLongLong_t && !defined wxLongLongIsLong + wxULongLong_t operator()( wxLongLong_t x ) const { return wx_static_cast(wxULongLong_t, x); } + wxULongLong_t operator()( wxULongLong_t x ) const { return x; } +#endif wxIntegerHash& operator=(const wxIntegerHash&) { return *this; } }; @@ -494,6 +529,10 @@ public: bool operator()( unsigned int a, unsigned int b ) const { return a == b; } bool operator()( short a, short b ) const { return a == b; } bool operator()( unsigned short a, unsigned short b ) const { return a == b; } +#if defined wxLongLong_t && !defined wxLongLongIsLong + bool operator()( wxLongLong_t a, wxLongLong_t b ) const { return a == b; } + bool operator()( wxULongLong_t a, wxULongLong_t b ) const { return a == b; } +#endif wxIntegerEqual& operator=(const wxIntegerEqual&) { return *this; } }; @@ -504,12 +543,10 @@ class WXDLLIMPEXP_BASE wxPointerHash public: wxPointerHash() { } - // TODO: this might not work well on architectures with 64 bit pointers but - // 32 bit longs, we should use % ULONG_MAX there #if wxUSE_STL && defined(HAVE_STL_HASH_MAP) size_t operator()( const void* k ) const { return (size_t)k; } #else - unsigned long operator()( const void* k ) const { return (unsigned long)wxPtrToULong(k); } + wxUIntPtr operator()( const void* k ) const { return wxPtrToUInt(k); } #endif wxPointerHash& operator=(const wxPointerHash&) { return *this; } @@ -524,21 +561,29 @@ 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; } }; @@ -569,6 +614,7 @@ CLASSEXP CLASSNAME:public CLASSNAME##_wxImplementation_HashTable \ { \ public: \ typedef VALUE_T mapped_type; \ + _WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \ \ wxEXPLICIT CLASSNAME( size_type hint = 100, hasher hf = hasher(), \ key_equal eq = key_equal() ) \ @@ -577,7 +623,10 @@ public: \ \ mapped_type& operator[]( const const_key_type& key ) \ { \ - return GetOrCreateNode( CLASSNAME##_wxImplementation_Pair( key, mapped_type() ) )->m_value.second; \ + bool created; \ + return GetOrCreateNode( \ + CLASSNAME##_wxImplementation_Pair( key, mapped_type() ), \ + created)->m_value.second; \ } \ \ const_iterator find( const const_key_type& key ) const \ @@ -590,7 +639,16 @@ public: \ return iterator( GetNode( key ), this ); \ } \ \ - void insert( const value_type& v ) { (*this)[v.first] = v.second; } \ + Insert_Result insert( const value_type& v ) \ + { \ + bool created; \ + Node *node = GetOrCreateNode( \ + CLASSNAME##_wxImplementation_Pair( v.first, v.second ), \ + created); \ + if ( !created ) \ + node->m_value.second = v.second; \ + return Insert_Result(iterator(node, this), created); \ + } \ \ size_type erase( const key_type& k ) \ { return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \ @@ -599,7 +657,10 @@ 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) @@ -663,4 +724,3 @@ WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual, #endif // _WX_HASHMAP_H_ -