X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..ce457f1245754243f17b4efde9ec773a8b3c3067:/src/common/hash.cpp

diff --git a/src/common/hash.cpp b/src/common/hash.cpp
index 1aba64563c..a782166d02 100644
--- a/src/common/hash.cpp
+++ b/src/common/hash.cpp
@@ -1,350 +1,858 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        hash.cpp
+// Name:        src/common/hash.cpp
 // Purpose:     wxHashTable implementation
 // Author:      Julian Smart
-// Modified by:
+// Modified by: VZ at 25.02.00: type safe hashes with WX_DECLARE_HASH()
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:   	wxWindows licence
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "hash.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #ifndef WX_PRECOMP
-#include "wx/list.h"
+    #include "wx/list.h"
+    #include "wx/hash.h"
 #endif
 
-#include "wx/hash.h"
+#if wxUSE_OLD_HASH_TABLE
 
 #include <string.h>
 #include <stdarg.h>
 
-#if !USE_SHARED_LIBRARY
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
 IMPLEMENT_DYNAMIC_CLASS(wxHashTable, wxObject)
-#endif
 
-wxHashTable::wxHashTable (const int the_key_type, const int size)
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxHashTablleBase for working with "void *" data
+// ----------------------------------------------------------------------------
+
+wxHashTableBase::wxHashTableBase()
+{
+    m_deleteContents = false;
+    m_hashTable = (wxListBase **)NULL;
+    m_hashSize = 0;
+    m_count = 0;
+    m_keyType = wxKEY_NONE;
+}
+
+void wxHashTableBase::Create(wxKeyType keyType, size_t size)
+{
+    Destroy();
+
+    m_hashSize = size;
+    m_keyType = keyType;
+    m_hashTable = new wxListBase *[size];
+    for ( size_t n = 0; n < m_hashSize; n++ )
+    {
+        m_hashTable[n] = (wxListBase *) NULL;
+    }
+}
+
+void wxHashTableBase::Destroy()
 {
+    if ( m_hashTable )
+    {
+        for ( size_t n = 0; n < m_hashSize; n++ )
+        {
+            delete m_hashTable[n];
+        }
+
+        delete [] m_hashTable;
+
+        m_hashTable = (wxListBase **)NULL;
+
+        m_count = 0;
+    }
+}
+
+void wxHashTableBase::DeleteContents(bool flag)
+{
+    m_deleteContents = flag;
+    for ( size_t n = 0; n < m_hashSize; n++ )
+    {
+        if ( m_hashTable[n] )
+        {
+            m_hashTable[n]->DeleteContents(flag);
+        }
+    }
+}
+
+wxNodeBase *wxHashTableBase::GetNode(long key, long value) const
+{
+    size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+    wxNodeBase *node;
+    if ( m_hashTable[slot] )
+    {
+        node = m_hashTable[slot]->Find(wxListKey(value));
+    }
+    else
+    {
+        node = (wxNodeBase *)NULL;
+    }
+
+    return node;
+}
+
+// ----------------------------------------------------------------------------
+// old not type safe wxHashTable
+// ----------------------------------------------------------------------------
+
+wxHashTable::wxHashTable (int the_key_type, int size)
+{
+  n = 0;
+  hash_table = (wxList**) NULL;
+  Create(the_key_type, size);
+  m_count = 0;
+  m_deleteContents = false;
+/*
   n = size;
   current_position = -1;
-  current_node = NULL;
+  current_node = (wxNode *) NULL;
 
   key_type = the_key_type;
   hash_table = new wxList *[size];
   int i;
   for (i = 0; i < size; i++)
-    hash_table[i] = NULL;
+    hash_table[i] = (wxList *) NULL;
+*/
 }
 
-wxHashTable::~wxHashTable (void)
+wxHashTable::~wxHashTable ()
 {
+  Destroy();
+}
+
+void wxHashTable::Destroy()
+{
+  if (!hash_table) return;
   int i;
   for (i = 0; i < n; i++)
     if (hash_table[i])
       delete hash_table[i];
   delete[] hash_table;
+  hash_table = NULL;
 }
 
-bool wxHashTable::Create(const int the_key_type, const int size)
+bool wxHashTable::Create(int the_key_type, int size)
 {
+  Destroy();
+
   n = size;
   current_position = -1;
-  current_node = NULL;
+  current_node = (wxNode *) NULL;
 
   key_type = the_key_type;
-  if (hash_table)
-    delete[] hash_table;
   hash_table = new wxList *[size];
   int i;
   for (i = 0; i < size; i++)
-    hash_table[i] = NULL;
-  return TRUE;
+    hash_table[i] = (wxList *) NULL;
+  return true;
+}
+
+
+void wxHashTable::DoCopy(const wxHashTable& table)
+{
+  n = table.n;
+  m_count = table.m_count;
+  current_position = table.current_position;
+  current_node = NULL; // doesn't matter - Next() will reconstruct it
+  key_type = table.key_type;
+
+  hash_table = new wxList *[n];
+  for (int i = 0; i < n; i++) {
+    if (table.hash_table[i] == NULL)
+      hash_table[i] = NULL;
+    else {
+      hash_table[i] = new wxList(key_type);
+      *(hash_table[i]) = *(table.hash_table[i]);
+    }
+  }
 }
 
-void wxHashTable::Put (const long key, const long value, wxObject * object)
+void wxHashTable::Put (long key, long value, wxObject * object)
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
+  {
     hash_table[position] = new wxList (wxKEY_INTEGER);
+    if (m_deleteContents) hash_table[position]->DeleteContents(true);
+  }
 
   hash_table[position]->Append (value, object);
+  m_count++;
 }
 
-void wxHashTable::Put (const long key, const char *value, wxObject * object)
+void wxHashTable::Put (long key, const wxChar *value, wxObject * object)
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    hash_table[position] = new wxList (wxKEY_INTEGER);
+  {
+    hash_table[position] = new wxList (wxKEY_STRING);
+    if (m_deleteContents) hash_table[position]->DeleteContents(true);
+  }
 
   hash_table[position]->Append (value, object);
+  m_count++;
 }
 
-void wxHashTable::Put (const long key, wxObject * object)
+void wxHashTable::Put (long key, wxObject * object)
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
+  {
     hash_table[position] = new wxList (wxKEY_INTEGER);
+    if (m_deleteContents) hash_table[position]->DeleteContents(true);
+  }
 
   hash_table[position]->Append (k, object);
+  m_count++;
 }
 
-void wxHashTable::Put (const char *key, wxObject * object)
+void wxHashTable::Put (const wxChar *key, wxObject * object)
 {
   int position = (int) (MakeKey (key) % n);
+  if (position < 0) position = -position;
 
   if (!hash_table[position])
+  {
     hash_table[position] = new wxList (wxKEY_STRING);
+    if (m_deleteContents) hash_table[position]->DeleteContents(true);
+  }
 
   hash_table[position]->Append (key, object);
+  m_count++;
 }
 
-wxObject *wxHashTable::Get (const long key, const long value) const
+wxObject *wxHashTable::Get (long key, long value) const
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	return node->Data ();
+        return node->GetData ();
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-wxObject *wxHashTable::Get (const long key, const char *value) const
+wxObject *wxHashTable::Get (long key, const wxChar *value) const
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	return node->Data ();
+        return node->GetData ();
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-wxObject *wxHashTable::Get (const long key) const
+wxObject *wxHashTable::Get (long key) const
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (k);
-      return node ? node->Data () : (wxObject*)NULL;
+      return node ? node->GetData () : (wxObject*)NULL;
     }
 }
 
-wxObject *wxHashTable::Get (const char *key) const
+wxObject *wxHashTable::Get (const wxChar *key) const
 {
   int position = (int) (MakeKey (key) % n);
+  if (position < 0) position = -position;
 
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (key);
-      return node ? node->Data () : (wxObject*)NULL;
+      return node ? node->GetData () : (wxObject*)NULL;
     }
 }
 
-wxObject *wxHashTable::Delete (const long key)
+wxObject *wxHashTable::Delete (long key)
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (k);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->GetData ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-wxObject *wxHashTable::Delete (const char *key)
+wxObject *wxHashTable::Delete (const wxChar *key)
 {
   int position = (int) (MakeKey (key) % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (key);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->GetData ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-wxObject *wxHashTable::Delete (const long key, const int value)
+wxObject *wxHashTable::Delete (long key, int value)
 {
   // Should NEVER be
   long k = (long) key;
-  if (k < 0)
-    k = -k;
 
   int position = (int) (k % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->GetData ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-wxObject *wxHashTable::Delete (const long key, const char *value)
+wxObject *wxHashTable::Delete (long key, const wxChar *value)
 {
   int position = (int) (key % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
-    return NULL;
+    return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->GetData ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return NULL;
+        return (wxObject *) NULL;
     }
 }
 
-long wxHashTable::MakeKey (const char *string) const
+long wxHashTable::MakeKey (const wxChar *string) const
 {
   long int_key = 0;
 
   while (*string)
-    int_key += (unsigned char) *string++;
+    int_key += (wxUChar) *string++;
 
   return int_key;
 }
 
-void wxHashTable::BeginFind (void)
+void wxHashTable::BeginFind ()
 {
   current_position = -1;
-  current_node = NULL;
+  current_node = (wxNode *) NULL;
 }
 
-wxNode *wxHashTable::Next (void)
+wxHashTable::Node* wxHashTable::Next ()
 {
-  wxNode *found = NULL;
-  bool end = FALSE;
+  wxNode *found = (wxNode *) NULL;
+  bool end = false;
   while (!end && !found)
     {
       if (!current_node)
-	{
-	  current_position++;
-	  if (current_position >= n)
-	    {
-	      current_position = -1;
-	      current_node = NULL;
-	      end = TRUE;
-	    }
-	  else
-	    {
-	      if (hash_table[current_position])
-		{
-		  current_node = hash_table[current_position]->First ();
-		  found = current_node;
-		}
-	    }
-	}
+        {
+          current_position++;
+          if (current_position >= n)
+            {
+              current_position = -1;
+              current_node = (wxNode *) NULL;
+              end = true;
+            }
+          else
+            {
+              if (hash_table[current_position])
+                {
+                  current_node = hash_table[current_position]->GetFirst ();
+                  found = current_node;
+                }
+            }
+        }
       else
-	{
-	  current_node = current_node->Next ();
-	  found = current_node;
-	}
+        {
+          current_node = current_node->GetNext ();
+          found = current_node;
+        }
     }
   return found;
 }
 
-void wxHashTable::DeleteContents (const bool flag)
+void wxHashTable::DeleteContents (bool flag)
 {
   int i;
+  m_deleteContents = flag;
   for (i = 0; i < n; i++)
     {
       if (hash_table[i])
-	hash_table[i]->DeleteContents (flag);
+        hash_table[i]->DeleteContents (flag);
     }
 }
 
-void wxHashTable::Clear (void)
+void wxHashTable::Clear ()
 {
-  int i;
-  for (i = 0; i < n; i++)
+    int i;
+    if (hash_table)
     {
-      if (hash_table[i])
-	hash_table[i]->Clear ();
+        for (i = 0; i < n; i++)
+        {
+            if (hash_table[i])
+                hash_table[i]->Clear ();
+        }
+    }
+  m_count = 0;
+}
+
+#else // if !wxUSE_OLD_HASH_TABLE
+
+wxHashTableBase_Node::wxHashTableBase_Node( long key, void* value,
+                                            wxHashTableBase* table )
+    : m_value( value ), m_hashPtr( table )
+{
+    m_key.integer = key;
+}
+
+wxHashTableBase_Node::wxHashTableBase_Node( const wxChar* key, void* value,
+                                            wxHashTableBase* table )
+    : m_value( value ), m_hashPtr( table )
+{
+    m_key.string = wxStrcpy( new wxChar[wxStrlen( key ) + 1], key );
+}
+
+wxHashTableBase_Node::~wxHashTableBase_Node()
+{
+    if( m_hashPtr ) m_hashPtr->DoRemoveNode( this );
+}
+
+//
+
+wxHashTableBase::wxHashTableBase()
+    : m_size( 0 ), m_count( 0 ), m_table( NULL ), m_keyType( wxKEY_NONE ),
+      m_deleteContents( false )
+{
+}
+
+void wxHashTableBase::Create( wxKeyType keyType, size_t size )
+{
+    m_keyType = keyType;
+    m_size = size;
+    m_table = new wxHashTableBase_Node*[ m_size ];
+
+    for( size_t i = 0; i < m_size; ++i )
+        m_table[i] = NULL;
+}
+
+void wxHashTableBase::Clear()
+{
+    for( size_t i = 0; i < m_size; ++i )
+    {
+        Node* end = m_table[i];
+
+        if( end == NULL )
+            continue;
+
+        Node *curr, *next = end->GetNext();
+
+        do
+        {
+            curr = next;
+            next = curr->GetNext();
+
+            DoDestroyNode( curr );
+
+            delete curr;
+        }
+        while( curr != end );
+
+        m_table[i] = NULL;
+    }
+
+    m_count = 0;
+}
+
+void wxHashTableBase::DoRemoveNode( wxHashTableBase_Node* node )
+{
+    size_t bucket = ( m_keyType == wxKEY_INTEGER ?
+                      node->m_key.integer        :
+                      MakeKey( node->m_key.string ) ) % m_size;
+
+    if( node->GetNext() == node )
+    {
+        // single-node chain (common case)
+        m_table[bucket] = NULL;
+    }
+    else
+    {
+        Node *start = m_table[bucket], *curr;
+        Node* prev = start;
+
+        for( curr = prev->GetNext(); curr != node;
+             prev = curr, curr = curr->GetNext() ) ;
+
+        DoUnlinkNode( bucket, node, prev );
+    }
+
+    DoDestroyNode( node );
+}
+
+void wxHashTableBase::DoDestroyNode( wxHashTableBase_Node* node )
+{
+    // if it is called from DoRemoveNode, node has already been
+    // removed, from other places it does not matter
+    node->m_hashPtr = NULL;
+
+    if( m_keyType == wxKEY_STRING )
+        delete[] node->m_key.string;
+    if( m_deleteContents )
+        DoDeleteContents( node );
+}
+
+void wxHashTableBase::Destroy()
+{
+    Clear();
+
+    delete[] m_table;
+
+    m_table = NULL;
+    m_size = 0;
+}
+
+void wxHashTableBase::DoInsertNode( size_t bucket, wxHashTableBase_Node* node )
+{
+    if( m_table[bucket] == NULL )
+    {
+        m_table[bucket] = node->m_next = node;
+    }
+    else
+    {
+        Node *prev = m_table[bucket];
+        Node *next = prev->m_next;
+
+        prev->m_next = node;
+        node->m_next = next;
+        m_table[bucket] = node;
+    }
+
+    ++m_count;
+}
+
+void wxHashTableBase::DoPut( long key, long hash, void* data )
+{
+    wxASSERT( m_keyType == wxKEY_INTEGER );
+
+    size_t bucket = size_t(hash) % m_size;
+    Node* node = new wxHashTableBase_Node( key, data, this );
+
+    DoInsertNode( bucket, node );
+}
+
+void wxHashTableBase::DoPut( const wxChar* key, long hash, void* data )
+{
+    wxASSERT( m_keyType == wxKEY_STRING );
+
+    size_t bucket = size_t(hash) % m_size;
+    Node* node = new wxHashTableBase_Node( key, data, this );
+
+    DoInsertNode( bucket, node );
+}
+
+void* wxHashTableBase::DoGet( long key, long hash ) const
+{
+    wxASSERT( m_keyType == wxKEY_INTEGER );
+
+    size_t bucket = size_t(hash) % m_size;
+
+    if( m_table[bucket] == NULL )
+        return NULL;
+
+    Node *first = m_table[bucket]->GetNext(),
+         *curr = first;
+
+    do
+    {
+        if( curr->m_key.integer == key )
+            return curr->m_value;
+
+        curr = curr->GetNext();
+    }
+    while( curr != first );
+
+    return NULL;
+}
+
+void* wxHashTableBase::DoGet( const wxChar* key, long hash ) const
+{
+    wxASSERT( m_keyType == wxKEY_STRING );
+
+    size_t bucket = size_t(hash) % m_size;
+
+    if( m_table[bucket] == NULL )
+        return NULL;
+
+    Node *first = m_table[bucket]->GetNext(),
+         *curr = first;
+
+    do
+    {
+        if( wxStrcmp( curr->m_key.string, key ) == 0 )
+            return curr->m_value;
+
+        curr = curr->GetNext();
+    }
+    while( curr != first );
+
+    return NULL;
+}
+
+void wxHashTableBase::DoUnlinkNode( size_t bucket, wxHashTableBase_Node* node,
+                                    wxHashTableBase_Node* prev )
+{
+    if( node == m_table[bucket] )
+        m_table[bucket] = prev;
+
+    if( prev == node && prev == node->GetNext() )
+        m_table[bucket] = NULL;
+    else
+        prev->m_next = node->m_next;
+
+    DoDestroyNode( node );
+    --m_count;
+}
+
+void* wxHashTableBase::DoDelete( long key, long hash )
+{
+    wxASSERT( m_keyType == wxKEY_INTEGER );
+
+    size_t bucket = size_t(hash) % m_size;
+
+    if( m_table[bucket] == NULL )
+        return NULL;
+
+    Node *first = m_table[bucket]->GetNext(),
+         *curr = first,
+         *prev = m_table[bucket];
+
+    do
+    {
+        if( curr->m_key.integer == key )
+        {
+            void* retval = curr->m_value;
+            curr->m_value = NULL;
+
+            DoUnlinkNode( bucket, curr, prev );
+            delete curr;
+
+            return retval;
+        }
+
+        prev = curr;
+        curr = curr->GetNext();
     }
+    while( curr != first );
+
+    return NULL;
+}
+
+void* wxHashTableBase::DoDelete( const wxChar* key, long hash )
+{
+    wxASSERT( m_keyType == wxKEY_STRING );
+
+    size_t bucket = size_t(hash) % m_size;
+
+    if( m_table[bucket] == NULL )
+        return NULL;
+
+    Node *first = m_table[bucket]->GetNext(),
+         *curr = first,
+         *prev = m_table[bucket];
+
+    do
+    {
+        if( wxStrcmp( curr->m_key.string, key ) == 0 )
+        {
+            void* retval = curr->m_value;
+            curr->m_value = NULL;
+
+            DoUnlinkNode( bucket, curr, prev );
+            delete curr;
+
+            return retval;
+        }
+
+        prev = curr;
+        curr = curr->GetNext();
+    }
+    while( curr != first );
+
+    return NULL;
+}
+
+long wxHashTableBase::MakeKey( const wxChar *str )
+{
+    long int_key = 0;
+
+    while( *str )
+        int_key += (wxUChar)*str++;
+
+    return int_key;
+}
+
+// ----------------------------------------------------------------------------
+// wxHashTable
+// ----------------------------------------------------------------------------
+
+wxHashTable::wxHashTable( const wxHashTable& table )
+           : wxHashTableBase()
+{
+    DoCopy( table );
+}
+
+const wxHashTable& wxHashTable::operator=( const wxHashTable& table )
+{
+    Destroy();
+    DoCopy( table );
+
+    return *this;
+}
+
+void wxHashTable::DoCopy( const wxHashTable& WXUNUSED(table) )
+{
+    Create( m_keyType, m_size );
+
+    wxFAIL;
+}
+
+void wxHashTable::DoDeleteContents( wxHashTableBase_Node* node )
+{
+    delete ((wxHashTable_Node*)node)->GetData();
+}
+
+void wxHashTable::GetNextNode( size_t bucketStart )
+{
+    for( size_t i = bucketStart; i < m_size; ++i )
+    {
+        if( m_table[i] != NULL )
+        {
+            m_curr = ((Node*)m_table[i])->GetNext();
+            m_currBucket = i;
+            return;
+        }
+    }
+
+    m_curr = NULL;
+    m_currBucket = 0;
+}
+
+wxHashTable::Node* wxHashTable::Next()
+{
+    if( m_curr == NULL )
+        GetNextNode( 0 );
+    else
+    {
+        m_curr = m_curr->GetNext();
+
+        if( m_curr == ( (Node*)m_table[m_currBucket] )->GetNext() )
+            GetNextNode( m_currBucket + 1 );
+    }
+
+    return m_curr;
 }
 
+#endif // !wxUSE_OLD_HASH_TABLE