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[wxWidgets.git] / src / common / hash.cpp

diff --git a/src/common/hash.cpp b/src/common/hash.cpp
index 78e1c6039d2d21e11e644aadcc7400d72ba79028..f6eb300922c41b11fe1c74e0c24fa16cf1012707 100644 (file)
--- a/src/common/hash.cpp
+++ b/src/common/hash.cpp
@@ -104,7 +104,7 @@ void wxHashTableBase::DeleteContents(bool flag)
 
 wxNodeBase *wxHashTableBase::GetNode(long key, long value) const
 {
-    size_t slot = (size_t)abs(key % m_hashSize);
+    size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
 
     wxNodeBase *node;
     if ( m_hashTable[slot] )
@@ -143,6 +143,11 @@ void wxHashTableLong::Init(size_t size)
     m_count = 0;
 }
 
+void wxHashTableLong::Create(size_t size)
+{
+    Init(size);
+}
+
 void wxHashTableLong::Destroy()
 {
     for ( size_t n = 0; n < m_hashSize; n++ )
@@ -161,7 +166,7 @@ void wxHashTableLong::Put(long key, long value)
 {
     wxCHECK_RET( m_hashSize, _T("must call Create() first") );
 
-    size_t slot = (size_t)abs(key % m_hashSize);
+    size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
 
     if ( !m_keys[slot] )
     {
@@ -179,7 +184,7 @@ long wxHashTableLong::Get(long key) const
 {
     wxCHECK_MSG( m_hashSize, wxNOT_FOUND, _T("must call Create() first") );
 
-    size_t slot = (size_t)abs(key % m_hashSize);
+    size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
 
     wxArrayLong *keys = m_keys[slot];
     if ( keys )
@@ -201,7 +206,7 @@ long wxHashTableLong::Delete(long key)
 {
     wxCHECK_MSG( m_hashSize, wxNOT_FOUND, _T("must call Create() first") );
 
-    size_t slot = (size_t)abs(key % m_hashSize);
+    size_t slot = (size_t)abs((int)(key % (long)m_hashSize));
 
     wxArrayLong *keys = m_keys[slot];
     if ( keys )
@@ -226,6 +231,109 @@ long wxHashTableLong::Delete(long key)
     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, _T(""), _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 _T("");
+}
+
+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;
+}
+
 // ----------------------------------------------------------------------------
 // old not type safe wxHashTable
 // ----------------------------------------------------------------------------
@@ -286,6 +394,7 @@ bool wxHashTable::Create(int the_key_type, int size)
 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;
@@ -329,7 +438,7 @@ void wxHashTable::Put (long key, const wxChar *value, wxObject * object)
 
   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);
   }
 
@@ -384,7 +493,7 @@ wxObject *wxHashTable::Get (long key, long value) const
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-        return node->Data ();
+        return node->GetData ();
       else
         return (wxObject *) NULL;
     }
@@ -404,7 +513,7 @@ wxObject *wxHashTable::Get (long key, const wxChar *value) const
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-        return node->Data ();
+        return node->GetData ();
       else
         return (wxObject *) NULL;
     }
@@ -423,7 +532,7 @@ wxObject *wxHashTable::Get (long key) const
   else
     {
       wxNode *node = hash_table[position]->Find (k);
-      return node ? node->Data () : (wxObject*)NULL;
+      return node ? node->GetData () : (wxObject*)NULL;
     }
 }
 
@@ -437,7 +546,7 @@ wxObject *wxHashTable::Get (const wxChar *key) const
   else
     {
       wxNode *node = hash_table[position]->Find (key);
-      return node ? node->Data () : (wxObject*)NULL;
+      return node ? node->GetData () : (wxObject*)NULL;
     }
 }
 
@@ -456,7 +565,7 @@ wxObject *wxHashTable::Delete (long key)
       wxNode *node = hash_table[position]->Find (k);
       if (node)
         {
-          wxObject *data = node->Data ();
+          wxObject *data = node->GetData ();
           delete node;
           m_count--;
           return data;
@@ -478,7 +587,7 @@ wxObject *wxHashTable::Delete (const wxChar *key)
       wxNode *node = hash_table[position]->Find (key);
       if (node)
         {
-          wxObject *data = node->Data ();
+          wxObject *data = node->GetData ();
           delete node;
           m_count--;
           return data;
@@ -503,7 +612,7 @@ wxObject *wxHashTable::Delete (long key, int value)
       wxNode *node = hash_table[position]->Find (value);
       if (node)
         {
-          wxObject *data = node->Data ();
+          wxObject *data = node->GetData ();
           delete node;
           m_count--;
           return data;
@@ -525,7 +634,7 @@ wxObject *wxHashTable::Delete (long key, const wxChar *value)
       wxNode *node = hash_table[position]->Find (value);
       if (node)
         {
-          wxObject *data = node->Data ();
+          wxObject *data = node->GetData ();
           delete node;
           m_count--;
           return data;
@@ -570,14 +679,14 @@ wxNode *wxHashTable::Next ()
             {
               if (hash_table[current_position])
                 {
-                  current_node = hash_table[current_position]->First ();
+                  current_node = hash_table[current_position]->GetFirst ();
                   found = current_node;
                 }
             }
         }
       else
         {
-          current_node = current_node->Next ();
+          current_node = current_node->GetNext ();
           found = current_node;
         }
     }
@@ -597,11 +706,14 @@ void wxHashTable::DeleteContents (bool flag)
 
 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;
 }