X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f8305cafb5a59cb2fa7bedc6e8e20e4bada60d90..99d800190a04a2deaf769017a5fae04a4ae50378:/src/common/hash.cpp diff --git a/src/common/hash.cpp b/src/common/hash.cpp index f8e5ec096b..7f313cd56f 100644 --- a/src/common/hash.cpp +++ b/src/common/hash.cpp @@ -5,7 +5,7 @@ // 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 +// Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "hash.h" #endif @@ -34,6 +34,8 @@ #include "wx/hash.h" +#if wxUSE_OLD_HASH_TABLE + #include #include @@ -53,7 +55,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxHashTable, wxObject) wxHashTableBase::wxHashTableBase() { - m_deleteContents = FALSE; + m_deleteContents = false; m_hashTable = (wxListBase **)NULL; m_hashSize = 0; m_count = 0; @@ -119,6 +121,8 @@ wxNodeBase *wxHashTableBase::GetNode(long key, long value) const return node; } +#if WXWIN_COMPATIBILITY_2_4 + // ---------------------------------------------------------------------------- // wxHashTableLong // ---------------------------------------------------------------------------- @@ -284,7 +288,7 @@ void wxStringHashTable::Put(long key, const wxString& value) wxString wxStringHashTable::Get(long key, bool *wasFound) const { - wxCHECK_MSG( m_hashSize, _T(""), _T("must call Create() first") ); + wxCHECK_MSG( m_hashSize, wxEmptyString, _T("must call Create() first") ); size_t slot = (size_t)abs((int)(key % (long)m_hashSize)); @@ -297,7 +301,7 @@ wxString wxStringHashTable::Get(long key, bool *wasFound) const if ( keys->Item(n) == key ) { if ( wasFound ) - *wasFound = TRUE; + *wasFound = true; return m_values[slot]->Item(n); } @@ -305,14 +309,14 @@ wxString wxStringHashTable::Get(long key, bool *wasFound) const } if ( wasFound ) - *wasFound = FALSE; + *wasFound = false; - return _T(""); + return wxEmptyString; } bool wxStringHashTable::Delete(long key) const { - wxCHECK_MSG( m_hashSize, FALSE, _T("must call Create() first") ); + wxCHECK_MSG( m_hashSize, false, _T("must call Create() first") ); size_t slot = (size_t)abs((int)(key % (long)m_hashSize)); @@ -326,14 +330,16 @@ bool wxStringHashTable::Delete(long key) const { keys->RemoveAt(n); m_values[slot]->RemoveAt(n); - return TRUE; + return true; } } } - return FALSE; + return false; } +#endif // WXWIN_COMPATIBILITY_2_4 + // ---------------------------------------------------------------------------- // old not type safe wxHashTable // ---------------------------------------------------------------------------- @@ -344,7 +350,7 @@ wxHashTable::wxHashTable (int the_key_type, int size) hash_table = (wxList**) NULL; Create(the_key_type, size); m_count = 0; - m_deleteContents = FALSE; + m_deleteContents = false; /* n = size; current_position = -1; @@ -387,7 +393,7 @@ bool wxHashTable::Create(int the_key_type, int size) int i; for (i = 0; i < size; i++) hash_table[i] = (wxList *) NULL; - return TRUE; + return true; } @@ -421,7 +427,7 @@ void wxHashTable::Put (long key, long value, wxObject * object) if (!hash_table[position]) { hash_table[position] = new wxList (wxKEY_INTEGER); - if (m_deleteContents) hash_table[position]->DeleteContents(TRUE); + if (m_deleteContents) hash_table[position]->DeleteContents(true); } hash_table[position]->Append (value, object); @@ -439,7 +445,7 @@ void wxHashTable::Put (long key, const wxChar *value, wxObject * object) if (!hash_table[position]) { hash_table[position] = new wxList (wxKEY_STRING); - if (m_deleteContents) hash_table[position]->DeleteContents(TRUE); + if (m_deleteContents) hash_table[position]->DeleteContents(true); } hash_table[position]->Append (value, object); @@ -457,7 +463,7 @@ void wxHashTable::Put (long key, wxObject * object) if (!hash_table[position]) { hash_table[position] = new wxList (wxKEY_INTEGER); - if (m_deleteContents) hash_table[position]->DeleteContents(TRUE); + if (m_deleteContents) hash_table[position]->DeleteContents(true); } hash_table[position]->Append (k, object); @@ -472,7 +478,7 @@ void wxHashTable::Put (const wxChar *key, wxObject * object) if (!hash_table[position]) { hash_table[position] = new wxList (wxKEY_STRING); - if (m_deleteContents) hash_table[position]->DeleteContents(TRUE); + if (m_deleteContents) hash_table[position]->DeleteContents(true); } hash_table[position]->Append (key, object); @@ -493,7 +499,7 @@ 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; } @@ -513,7 +519,7 @@ 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; } @@ -532,7 +538,7 @@ 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; } } @@ -546,7 +552,7 @@ 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; } } @@ -565,7 +571,7 @@ 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; @@ -587,7 +593,7 @@ 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; @@ -612,7 +618,7 @@ 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; @@ -634,7 +640,7 @@ 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; @@ -660,10 +666,10 @@ void wxHashTable::BeginFind () current_node = (wxNode *) NULL; } -wxNode *wxHashTable::Next () +wxHashTable::Node* wxHashTable::Next () { wxNode *found = (wxNode *) NULL; - bool end = FALSE; + bool end = false; while (!end && !found) { if (!current_node) @@ -673,20 +679,20 @@ wxNode *wxHashTable::Next () { current_position = -1; current_node = (wxNode *) NULL; - end = TRUE; + end = true; } else { 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; } } @@ -718,3 +724,359 @@ void wxHashTable::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