// Name: 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"
#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;
+}
+
+#if WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// wxHashTableLong
+// ----------------------------------------------------------------------------
+
+wxHashTableLong::~wxHashTableLong()
+{
+ Destroy();
+}
+
+void wxHashTableLong::Init(size_t size)
+{
+ m_hashSize = size;
+ m_values = new wxArrayLong *[size];
+ m_keys = new wxArrayLong *[size];
+
+ for ( size_t n = 0; n < m_hashSize; n++ )
+ {
+ m_values[n] =
+ m_keys[n] = (wxArrayLong *)NULL;
+ }
+
+ m_count = 0;
+}
+
+void wxHashTableLong::Create(size_t size)
+{
+ Init(size);
+}
+
+void wxHashTableLong::Destroy()
+{
+ for ( size_t n = 0; n < m_hashSize; n++ )
+ {
+ delete m_values[n];
+ delete m_keys[n];
+ }
+
+ delete [] m_values;
+ delete [] m_keys;
+ m_hashSize = 0;
+ m_count = 0;
+}
+
+void wxHashTableLong::Put(long key, long value)
+{
+ wxCHECK_RET( m_hashSize, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ if ( !m_keys[slot] )
+ {
+ m_keys[slot] = new wxArrayLong;
+ m_values[slot] = new wxArrayLong;
+ }
+
+ m_keys[slot]->Add(key);
+ m_values[slot]->Add(value);
+
+ m_count++;
+}
+
+long wxHashTableLong::Get(long key) const
+{
+ wxCHECK_MSG( m_hashSize, wxNOT_FOUND, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ wxArrayLong *keys = m_keys[slot];
+ if ( keys )
+ {
+ size_t count = keys->GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( keys->Item(n) == key )
+ {
+ return m_values[slot]->Item(n);
+ }
+ }
+ }
+
+ return wxNOT_FOUND;
+}
+
+long wxHashTableLong::Delete(long key)
+{
+ wxCHECK_MSG( m_hashSize, wxNOT_FOUND, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ wxArrayLong *keys = m_keys[slot];
+ if ( keys )
+ {
+ size_t count = keys->GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( keys->Item(n) == key )
+ {
+ long val = m_values[slot]->Item(n);
+
+ keys->RemoveAt(n);
+ m_values[slot]->RemoveAt(n);
+
+ m_count--;
+
+ return val;
+ }
+ }
+ }
+
+ return wxNOT_FOUND;
+}
+
+// ----------------------------------------------------------------------------
+// wxStringHashTable: more efficient than storing strings in a list
+// ----------------------------------------------------------------------------
+
+wxStringHashTable::wxStringHashTable(size_t sizeTable)
{
+ m_keys = new wxArrayLong *[sizeTable];
+ m_values = new wxArrayString *[sizeTable];
+
+ m_hashSize = sizeTable;
+ for ( size_t n = 0; n < m_hashSize; n++ )
+ {
+ m_values[n] = (wxArrayString *)NULL;
+ m_keys[n] = (wxArrayLong *)NULL;
+ }
+}
+
+wxStringHashTable::~wxStringHashTable()
+{
+ Destroy();
+}
+
+void wxStringHashTable::Destroy()
+{
+ for ( size_t n = 0; n < m_hashSize; n++ )
+ {
+ delete m_values[n];
+ delete m_keys[n];
+ }
+
+ delete [] m_values;
+ delete [] m_keys;
+ m_hashSize = 0;
+}
+
+void wxStringHashTable::Put(long key, const wxString& value)
+{
+ wxCHECK_RET( m_hashSize, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ if ( !m_keys[slot] )
+ {
+ m_keys[slot] = new wxArrayLong;
+ m_values[slot] = new wxArrayString;
+ }
+
+ m_keys[slot]->Add(key);
+ m_values[slot]->Add(value);
+}
+
+wxString wxStringHashTable::Get(long key, bool *wasFound) const
+{
+ wxCHECK_MSG( m_hashSize, wxEmptyString, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ wxArrayLong *keys = m_keys[slot];
+ if ( keys )
+ {
+ size_t count = keys->GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( keys->Item(n) == key )
+ {
+ if ( wasFound )
+ *wasFound = true;
+
+ return m_values[slot]->Item(n);
+ }
+ }
+ }
+
+ if ( wasFound )
+ *wasFound = false;
+
+ return wxEmptyString;
+}
+
+bool wxStringHashTable::Delete(long key) const
+{
+ wxCHECK_MSG( m_hashSize, false, _T("must call Create() first") );
+
+ size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
+
+ wxArrayLong *keys = m_keys[slot];
+ if ( keys )
+ {
+ size_t count = keys->GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( keys->Item(n) == key )
+ {
+ keys->RemoveAt(n);
+ m_values[slot]->RemoveAt(n);
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// 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 ()
+{
+ Destroy();
}
-wxHashTable::~wxHashTable (void)
+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 );
+
+ wxASSERT( false );
+}
+
+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
projects / wxWidgets.git / blobdiff