X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/607f710e5d084d169c43338fc92c5b9c4fff9e32..80b2db4ee671f62a1de0f9f91e007c83449df107:/include/wx/hashmap.h diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h index 1715c403f8..0502f6a27a 100644 --- a/include/wx/hashmap.h +++ b/include/wx/hashmap.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: hashmap.cpp +// Name: hashmap.h // Purpose: wxHashMap class // Author: Mattia Barbon // Modified by: @@ -12,22 +12,32 @@ #ifndef _WX_HASHMAP_H_ #define _WX_HASHMAP_H_ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "hashmap.h" #endif -#include +#include "wx/string.h" + +#include // for ptrdiff_t + +#ifdef __WXWINCE__ +typedef int ptrdiff_t; +#endif // private -struct WXDLLEXPORT _wxHashTable_NodeBase +struct WXDLLIMPEXP_BASE _wxHashTable_NodeBase { _wxHashTable_NodeBase() : m_nxt(0) {} _wxHashTable_NodeBase* m_nxt; + +// Cannot do this: +// DECLARE_NO_COPY_CLASS(_wxHashTable_NodeBase) +// without rewriting the macros, which require a public copy constructor. }; // private -class WXDLLEXPORT _wxHashTableBase2 +class WXDLLIMPEXP_BASE _wxHashTableBase2 { public: typedef void (*NodeDtor)(_wxHashTable_NodeBase*); @@ -60,11 +70,12 @@ protected: static void CopyHashTable( _wxHashTable_NodeBase** srcTable, size_t srcBuckets, _wxHashTableBase2* dst, _wxHashTable_NodeBase** dstTable, + size_t dstBuckets, BucketFromNode func, ProcessNode proc ); - static void** AllocTable( size_t size ) + static void** AllocTable( size_t sz ) { - return (void **)calloc(size, sizeof(void*)); + return (void **)calloc(sz, sizeof(void*)); } }; @@ -172,10 +183,10 @@ public: \ const_pointer operator ->() const { return &(m_node->m_value); } \ }; \ \ - CLASSNAME( size_type size = 10, const hasher& hfun = hasher(), \ + CLASSNAME( size_type sz = 10, const hasher& hfun = hasher(), \ const key_equal& k_eq = key_equal(), \ const key_extractor& k_ex = key_extractor() ) \ - : m_tableBuckets( GetNextPrime( size ) ), \ + : m_tableBuckets( GetNextPrime( (unsigned long) sz ) ), \ m_items( 0 ), \ m_hasher( hfun ), \ m_equals( k_eq ), \ @@ -218,7 +229,12 @@ public: \ \ /* removes all elements from the hash table, but does not */ \ /* shrink it ( perhaps it should ) */ \ - void clear() { DeleteNodes( m_tableBuckets, (_wxHashTable_NodeBase**)m_table, DeleteNode ); } \ + void clear() \ + { \ + DeleteNodes( m_tableBuckets, (_wxHashTable_NodeBase**)m_table, \ + DeleteNode ); \ + m_items = 0; \ + } \ \ size_type size() const { return m_items; } \ size_type max_size() const { return size_type(-1); } \ @@ -243,7 +259,7 @@ public: \ delete *node; \ (*node) = temp; \ if( SHOULD_SHRINK( m_tableBuckets, m_items ) ) \ - ResizeTable( GetPreviousPrime( m_tableBuckets ) - 1 ); \ + ResizeTable( GetPreviousPrime( (unsigned long) m_tableBuckets ) - 1 ); \ return 1; \ } \ \ @@ -267,8 +283,11 @@ protected: \ return node; \ node = node->m_next(); \ } \ - \ - node = new Node( value ); \ + return CreateNode( value , bucket); \ + }\ + Node * CreateNode( const value_type& value, size_t bucket ) \ + {\ + Node* node = new Node( value ); \ node->m_nxt = m_table[bucket]; \ m_table[bucket] = node; \ \ @@ -279,6 +298,23 @@ protected: \ \ return node; \ } \ + void CreateNodeLast( const value_type& value ) \ + { \ + size_t bucket = m_hasher( m_getKey(value) ) % m_tableBuckets; \ + Node* curr = m_table[bucket], \ + * next = m_table[bucket]; \ + while( next ) { curr = next; next = next->m_next(); } \ + Node** ptr = curr ? (Node**)&curr->m_nxt : &m_table[bucket]; \ + *ptr = new Node( value ); \ + /* must be after the node is inserted */ \ + ++m_items; \ + if( SHOULD_GROW( m_tableBuckets, m_items ) ) \ + ResizeTable( m_tableBuckets ); \ + } \ + void CreateNode( const value_type& value ) \ + {\ + CreateNode(value, m_hasher( m_getKey(value) ) % m_tableBuckets ); \ + }\ \ /* returns NULL if not found */ \ Node** GetNodePtr( const const_key_type& key ) const \ @@ -315,15 +351,15 @@ protected: \ \ void ResizeTable( size_t newSize ) \ { \ - newSize = GetNextPrime( newSize ); \ + newSize = GetNextPrime( (unsigned long)newSize ); \ Node** srcTable = m_table; \ size_t srcBuckets = m_tableBuckets; \ m_table = (Node**)AllocTable( newSize ); \ m_tableBuckets = newSize; \ \ CopyHashTable( (_wxHashTable_NodeBase**)srcTable, srcBuckets, \ - this, (_wxHashTable_NodeBase**)m_table, \ - (BucketFromNode)&GetBucketForNode,\ + this, (_wxHashTable_NodeBase**)m_table, newSize, \ + (BucketFromNode)GetBucketForNode,\ (ProcessNode)&DummyProcessNode ); \ free(srcTable); \ } \ @@ -334,9 +370,9 @@ protected: \ ResizeTable( ht.size() ); \ CopyHashTable( (_wxHashTable_NodeBase**)ht.m_table, ht.m_tableBuckets,\ (_wxHashTableBase2*)this, \ - (_wxHashTable_NodeBase**)m_table, \ - (BucketFromNode)&GetBucketForNode, \ - (ProcessNode)&CopyNode ); \ + (_wxHashTable_NodeBase**)m_table, m_tableBuckets, \ + (BucketFromNode)GetBucketForNode, \ + (ProcessNode)CopyNode ); \ } \ }; @@ -352,7 +388,6 @@ public: \ 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 ):first(t1(f)),second(t2()) {} \ \ t1 first; \ t2 second; \ @@ -363,9 +398,15 @@ public: \ #define _WX_DECLARE_HASH_MAP_KEY_EX( KEY_T, PAIR_T, CLASSNAME, CLASSEXP ) \ CLASSEXP CLASSNAME \ { \ + typedef KEY_T key_type; \ + typedef PAIR_T pair_type; \ + typedef const key_type const_key_type; \ + typedef const pair_type const_pair_type; \ + typedef const_key_type& const_key_reference; \ + typedef const_pair_type& const_pair_reference; \ public: \ CLASSNAME() { } \ - KEY_T operator()( PAIR_T pair ) const { return pair.first; } \ + const_key_reference operator()( const_pair_reference pair ) const { return pair.first; }\ \ /* the dummy assignment operator is needed to suppress compiler */ \ /* warnings from hash table class' operator=(): gcc complains about */ \ @@ -390,7 +431,7 @@ inline bool grow_lf70( size_t buckets, size_t items ) // in the hash table class assignment operator (where they're assigned) // integer types -class WXDLLEXPORT wxIntegerHash +class WXDLLIMPEXP_BASE wxIntegerHash { public: wxIntegerHash() { } @@ -404,7 +445,7 @@ public: wxIntegerHash& operator=(const wxIntegerHash&) { return *this; } }; -class WXDLLEXPORT wxIntegerEqual +class WXDLLIMPEXP_BASE wxIntegerEqual { public: wxIntegerEqual() { } @@ -419,19 +460,19 @@ public: }; // pointers -class WXDLLEXPORT wxPointerHash +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 - unsigned long operator()( const void* k ) const { return (unsigned long)k; } + unsigned long operator()( const void* k ) const { return (unsigned long)wxPtrToULong(k); } wxPointerHash& operator=(const wxPointerHash&) { return *this; } }; -class WXDLLEXPORT wxPointerEqual +class WXDLLIMPEXP_BASE wxPointerEqual { public: wxPointerEqual() { } @@ -441,7 +482,7 @@ public: }; // wxString, char*, wxChar* -class WXDLLEXPORT wxStringHash +class WXDLLIMPEXP_BASE wxStringHash { public: wxStringHash() {} @@ -459,7 +500,7 @@ public: wxStringHash& operator=(const wxStringHash&) { return *this; } }; -class WXDLLEXPORT wxStringEqual +class WXDLLIMPEXP_BASE wxStringEqual { public: wxStringEqual() {} @@ -489,7 +530,7 @@ public: \ \ mapped_type& operator[]( const const_key_type& key ) \ { \ - return GetOrCreateNode( CLASSNAME##_wxImplementation_Pair( key ) )->m_value.second; \ + return GetOrCreateNode( CLASSNAME##_wxImplementation_Pair( key, mapped_type() ) )->m_value.second; \ } \ \ const_iterator find( const const_key_type& key ) const \ @@ -512,7 +553,7 @@ public: \ /* count() == 0 | 1 */ \ size_type count( const const_key_type& key ) \ { return GetNode( key ) ? 1 : 0; } \ -}; +} // 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) \ @@ -520,24 +561,50 @@ public: \ #define WX_DECLARE_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \ _WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \ - CLASSNAME, class ); + CLASSNAME, class ) #define WX_DECLARE_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \ _WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \ - CLASSNAME, class ); + 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( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, class WXDLLEXPORT ) + WX_DECLARE_HASH_MAP_WITH_DECL( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, \ + CLASSNAME, class WXDLLEXPORT ) -#define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \ +#define WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \ _WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \ - CLASSNAME, class WXDLLEXPORT ); + CLASSNAME, DECL ) -#define WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \ +#define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \ + WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \ + class WXDLLEXPORT ) + +#define WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \ _WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \ - CLASSNAME, class WXDLLEXPORT ); + CLASSNAME, DECL ) + +#define WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \ + WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \ + class WXDLLEXPORT ) + +// 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(); \ + } #endif // _WX_HASHMAP_H_