X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ad81651f00edc6f489d9b6a0839d316a964fd521..109c7768eb46ccbb45adc1c409fe8f6b7d799e2f:/src/common/hash.cpp

diff --git a/src/common/hash.cpp b/src/common/hash.cpp
index fbee85aceb..f8e5ec096b 100644
--- a/src/common/hash.cpp
+++ b/src/common/hash.cpp
@@ -2,13 +2,21 @@
 // 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
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
 #ifdef __GNUG__
 #pragma implementation "hash.h"
 #endif
@@ -29,10 +37,315 @@
 #include <string.h>
 #include <stdarg.h>
 
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
 IMPLEMENT_DYNAMIC_CLASS(wxHashTable, wxObject)
 
+// ============================================================================
+// 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;
+}
+
+// ----------------------------------------------------------------------------
+// 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, _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
+// ----------------------------------------------------------------------------
+
 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 = (wxNode *) NULL;
@@ -42,14 +355,15 @@ wxHashTable::wxHashTable (int the_key_type, int size)
   int i;
   for (i = 0; i < size; i++)
     hash_table[i] = (wxList *) NULL;
+*/
 }
 
-wxHashTable::~wxHashTable (void)
+wxHashTable::~wxHashTable ()
 {
   Destroy();
 }
 
-void wxHashTable::Destroy(void)
+void wxHashTable::Destroy()
 {
   if (!hash_table) return;
   int i;
@@ -62,13 +376,13 @@ void wxHashTable::Destroy(void)
 
 bool wxHashTable::Create(int the_key_type, int size)
 {
+  Destroy();
+
   n = size;
   current_position = -1;
   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++)
@@ -80,6 +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;
@@ -99,71 +414,88 @@ 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 (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 (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 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 (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 (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	return node->Data ();
+        return node->Data ();
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
@@ -171,19 +503,19 @@ 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 (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	return node->Data ();
+        return node->Data ();
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
@@ -191,10 +523,10 @@ 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 (wxObject *) NULL;
   else
@@ -207,6 +539,7 @@ wxObject *wxHashTable::Get (long 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 (wxObject *) NULL;
@@ -221,42 +554,46 @@ 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 (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (k);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->Data ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
 wxObject *wxHashTable::Delete (const wxChar *key)
 {
   int position = (int) (MakeKey (key) % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
     return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (key);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->Data ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
@@ -264,42 +601,46 @@ 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 (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->Data ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
 wxObject *wxHashTable::Delete (long key, const wxChar *value)
 {
   int position = (int) (key % n);
+  if (position < 0) position = -position;
+
   if (!hash_table[position])
     return (wxObject *) NULL;
   else
     {
       wxNode *node = hash_table[position]->Find (value);
       if (node)
-	{
-	  wxObject *data = node->Data ();
-	  delete node;
-	  return data;
-	}
+        {
+          wxObject *data = node->Data ();
+          delete node;
+          m_count--;
+          return data;
+        }
       else
-	return (wxObject *) NULL;
+        return (wxObject *) NULL;
     }
 }
 
@@ -313,41 +654,41 @@ long wxHashTable::MakeKey (const wxChar *string) const
   return int_key;
 }
 
-void wxHashTable::BeginFind (void)
+void wxHashTable::BeginFind ()
 {
   current_position = -1;
   current_node = (wxNode *) NULL;
 }
 
-wxNode *wxHashTable::Next (void)
+wxNode *wxHashTable::Next ()
 {
   wxNode *found = (wxNode *) NULL;
   bool end = FALSE;
   while (!end && !found)
     {
       if (!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]->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]->First ();
+                  found = current_node;
+                }
+            }
+        }
       else
-	{
-	  current_node = current_node->Next ();
-	  found = current_node;
-	}
+        {
+          current_node = current_node->Next ();
+          found = current_node;
+        }
     }
   return found;
 }
@@ -355,20 +696,25 @@ wxNode *wxHashTable::Next (void)
 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;
 }