#include "wx/defs.h"
#if !wxUSE_STL
+ #include "wx/object.h"
#include "wx/list.h"
+#else
+ class WXDLLIMPEXP_BASE wxObject;
#endif
#if WXWIN_COMPATIBILITY_2_4
#include "wx/dynarray.h"
#endif
-class WXDLLIMPEXP_BASE wxObject;
-
// the default size of the hash
#define wxHASH_SIZE_DEFAULT (1000)
DECLARE_NO_COPY_CLASS(wxHashTableBase)
};
-#else
-
-#include "wx/hashmap.h"
+#else // if wxUSE_STL
#if !defined(wxENUM_KEY_TYPE_DEFINED)
#define wxENUM_KEY_TYPE_DEFINED
wxChar *string;
};
-struct WXDLLIMPEXP_BASE wxHashTableHash
+class WXDLLIMPEXP_BASE wxHashTableBase_Node
{
- wxHashTableHash() { }
- wxHashTableHash( wxKeyType keyType ) : m_keyType( keyType ) { }
-
- wxKeyType m_keyType;
+ friend class WXDLLIMPEXP_BASE wxHashTableBase;
+ typedef class WXDLLIMPEXP_BASE wxHashTableBase_Node _Node;
+public:
+ wxHashTableBase_Node( long key, void* value,
+ wxHashTableBase* table );
+ wxHashTableBase_Node( const wxChar* key, void* value,
+ wxHashTableBase* table );
+ ~wxHashTableBase_Node();
- unsigned long operator ()( const wxHashKeyValue& k ) const
- {
- if( m_keyType == wxKEY_STRING )
- return wxStringHash::wxCharStringHash( k.string );
- else
- return (unsigned long)k.integer;
- }
-};
+ long GetKeyInteger() const { return m_key.integer; }
+ const wxChar* GetKeyString() const { return m_key.string; }
-struct WXDLLIMPEXP_BASE wxHashTableEqual
-{
- wxHashTableEqual() { }
- wxHashTableEqual( wxKeyType keyType ) : m_keyType( keyType ) { }
+ void* GetData() const { return m_value; }
+ void SetData( void* data ) { m_value = data; }
- wxKeyType m_keyType;
+protected:
+ _Node* GetNext() const { return m_next; }
- bool operator ()( const wxHashKeyValue& k1, const wxHashKeyValue& k2 ) const
- {
- if( m_keyType == wxKEY_STRING )
- return wxStrcmp( k1.string, k2.string ) == 0;
- else
- return k1.integer == k2.integer;
- }
-};
+protected:
+ // next node in the chain
+ wxHashTableBase_Node* m_next;
-WX_DECLARE_EXPORTED_HASH_MAP( wxHashKeyValue,
- void*,
- wxHashTableHash,
- wxHashTableEqual,
- wxHashTableBaseBaseBase );
+ // key
+ wxHashKeyValue m_key;
-// hack: we should really have HASH_MULTI(MAP|SET), but this requires
-// less work
+ // value
+ void* m_value;
-class WXDLLIMPEXP_BASE wxHashTableBaseBase : public wxHashTableBaseBaseBase
-{
-public:
- wxHashTableBaseBase(size_t size, const wxHashTableHash& hash,
- const wxHashTableEqual& equal)
- : wxHashTableBaseBaseBase(size, hash, equal)
- { }
-
- void multi_insert(const wxHashKeyValue& key, void* value)
- {
- CreateNodeLast(value_type(key, value));
- }
+ // pointer to the hash containing the node, used to remove the
+ // node from the hash when the user deletes the node iterating
+ // through it
+ // TODO: move it to wxHashTable_Node (only wxHashTable supports
+ // iteration)
+ wxHashTableBase* m_hashPtr;
};
class WXDLLIMPEXP_BASE wxHashTableBase
+#if !wxUSE_STL
+ : public wxObject
+#endif
{
+ friend class WXDLLIMPEXP_BASE wxHashTableBase_Node;
public:
- wxHashTableBase( wxKeyType keyType = wxKEY_INTEGER,
- size_t size = wxHASH_SIZE_DEFAULT )
- : m_map( size, wxHashTableHash( keyType ),
- wxHashTableEqual( keyType ) ),
- m_keyType( keyType ) { }
-
- ~wxHashTableBase() { Clear(); }
-
- size_t GetCount() const { return m_map.size(); }
-
- void Clear()
- {
- if( m_keyType == wxKEY_STRING )
- {
- for( wxHashTableBaseBase::iterator it = m_map.begin(),
- en = m_map.end();
- it != en; )
- {
- wxChar* tmp = it->first.string;
- ++it;
- delete[] tmp; // used in operator++
- }
- }
- m_map.clear();
- }
-protected:
- void DoPut( long key, void* data )
- {
- wxASSERT( m_keyType == wxKEY_INTEGER );
-
- wxHashKeyValue k; k.integer = key;
- m_map.multi_insert(k, data);
- }
+ typedef wxHashTableBase_Node Node;
- void DoPut( const wxChar* key, void* data )
- {
- wxASSERT( m_keyType == wxKEY_STRING );
+ wxHashTableBase();
+ virtual ~wxHashTableBase();
- wxHashKeyValue k;
- k.string = wxStrcpy(new wxChar[wxStrlen(key) + 1], key);
- m_map.multi_insert(k, data);
- }
+ void Create( wxKeyType keyType = wxKEY_INTEGER,
+ size_t size = wxHASH_SIZE_DEFAULT );
+ void Clear();
+ void Destroy();
- void* DoGet( long key ) const
- {
- wxASSERT( m_keyType == wxKEY_INTEGER );
+ size_t GetSize() const { return m_size; }
+ size_t GetCount() const { return m_count; }
- wxHashKeyValue k; k.integer = key;
- wxHashTableBaseBase::const_iterator it = m_map.find( k );
+ void DeleteContents( bool flag ) { m_deleteContents = flag; }
- return it != m_map.end() ? it->second : NULL;
- }
+ static long MakeKey(const wxChar *string);
- void* DoGet( const wxChar* key ) const
- {
- wxASSERT( m_keyType == wxKEY_STRING );
+protected:
+ void DoPut( long key, long hash, void* data );
+ void DoPut( const wxChar* key, long hash, void* data );
+ void* DoGet( long key, long hash ) const;
+ void* DoGet( const wxChar* key, long hash ) const;
+ void* DoDelete( long key, long hash );
+ void* DoDelete( const wxChar* key, long hash );
- wxHashKeyValue k; k.string = (wxChar*)key;
- wxHashTableBaseBase::const_iterator it = m_map.find( k );
+private:
+ // Remove the node from the hash, *only called from
+ // ~wxHashTable*_Node destructor
+ void DoRemoveNode( wxHashTableBase_Node* node );
- return it != m_map.end() ? it->second : NULL;
- }
+ // destroys data contained in the node if appropriate:
+ // deletes the key if it is a string and destrys
+ // the value if m_deleteContents is true
+ void DoDestroyNode( wxHashTableBase_Node* node );
- void* DoDelete( long key )
- {
- wxASSERT( m_keyType == wxKEY_INTEGER );
+ // inserts a node in the table (at the end of the chain)
+ void DoInsertNode( size_t bucket, wxHashTableBase_Node* node );
- wxHashKeyValue k; k.integer = key;
- wxHashTableBaseBase::iterator it = m_map.find( k );
-
- if( it != m_map.end() )
- {
- void* data = it->second;
+ // removes a node from the table (fiven a pointer to the previous
+ // but does not delete it (only deletes its contents)
+ void DoUnlinkNode( size_t bucket, wxHashTableBase_Node* node,
+ wxHashTableBase_Node* prev );
- m_map.erase( it );
- return data;
- }
+ // unconditionally deletes node value (invoking the
+ // correct destructor)
+ virtual void DoDeleteContents( wxHashTableBase_Node* node ) = 0;
- return NULL;
- }
+protected:
+ // number of buckets
+ size_t m_size;
- void* DoDelete( const wxChar* key )
- {
- wxASSERT( m_keyType == wxKEY_STRING );
+ // number of nodes (key/value pairs)
+ size_t m_count;
- wxHashKeyValue k; k.string = (wxChar*)key;
- wxHashTableBaseBase::iterator it = m_map.find( k );
-
- if( it != m_map.end() )
- {
- void* data = it->second;
- wxChar* k = it->first.string;
+ // table
+ Node** m_table;
- m_map.erase( it );
- delete[] k;
- return data;
- }
+ // key typ (INTEGER/STRING)
+ wxKeyType m_keyType;
- return NULL;
- }
+ // delete contents when hash is cleared
+ bool m_deleteContents;
- wxHashTableBaseBase m_map;
- wxKeyType m_keyType;
+private:
+ DECLARE_NO_COPY_CLASS(wxHashTableBase)
};
#endif // !wxUSE_STL
#if wxUSE_STL
-class WXDLLIMPEXP_BASE wxHashTable : protected wxHashTableBase
+class WXDLLIMPEXP_BASE wxHashTable_Node : public wxHashTableBase_Node
{
- typedef wxHashTableBaseBase hash;
+ friend class WXDLLIMPEXP_BASE wxHashTable;
public:
- class dummy;
-
- struct compatibility_iterator
- {
- hash::iterator m_iter;
- hash* m_hash;
-
- operator bool() const { return m_iter != m_hash->end(); }
- bool operator !() const { return m_iter == m_hash->end(); }
- compatibility_iterator( hash* li, hash::iterator it )
- : m_iter( it ), m_hash( li ) {}
- compatibility_iterator() { }
-
- dummy* operator->() { return (dummy*)this; }
- };
- typedef compatibility_iterator citer;
-
- class dummy
- {
- typedef hash::iterator it;
- typedef compatibility_iterator citer;
- public:
- wxObject* GetData() const
- {
- citer* i = (citer*)this;
- return (wxObject*)i->m_iter->second;
- }
- citer GetNext() const
- {
- citer* i = (citer*)this;
- it lit = i->m_iter;
- return citer( i->m_hash, ++lit );
- }
- void SetData( wxObject* e )
- {
- citer* i = (citer*)this;
- i->m_iter->second = e;
- }
- private:
- dummy();
- };
+ wxHashTable_Node( long key, void* value,
+ wxHashTableBase* table )
+ : wxHashTableBase_Node( key, value, table ) { }
+ wxHashTable_Node( const wxChar* key, void* value,
+ wxHashTableBase* table )
+ : wxHashTableBase_Node( key, value, table ) { }
+
+ wxObject* GetData() const
+ { return (wxObject*)wxHashTableBase_Node::GetData(); }
+ void SetData( wxObject* data )
+ { wxHashTableBase_Node::SetData( data ); }
+
+ wxHashTable_Node* GetNext() const
+ { return (wxHashTable_Node*)wxHashTableBase_Node::GetNext(); }
+};
+
+// should inherit protectedly, but it is public for compatibility in
+// order to publicly inherit from wxObject
+class WXDLLIMPEXP_BASE wxHashTable : public wxHashTableBase
+{
+ typedef wxHashTableBase hash;
+public:
+ typedef wxHashTable_Node Node;
+ typedef wxHashTable_Node* compatibility_iterator;
public:
wxHashTable( wxKeyType keyType = wxKEY_INTEGER,
size_t size = wxHASH_SIZE_DEFAULT )
- : wxHashTableBase( keyType, size ) { }
+ : wxHashTableBase() { Create( keyType, size ); BeginFind(); }
+ wxHashTable( const wxHashTable& table );
+
+ const wxHashTable& operator=( const wxHashTable& );
void Destroy() { Clear(); }
// key and value are the same
- void Put(long value, wxObject *object) { DoPut( value, object ); }
- void Put(const wxChar *value, wxObject *object) { DoPut( value, object ); }
+ void Put(long value, wxObject *object)
+ { DoPut( value, value, object ); }
+ void Put(long hash, long value, wxObject *object)
+ { DoPut( value, hash, object ); }
+ void Put(const wxChar *value, wxObject *object)
+ { DoPut( value, MakeKey( value ), object ); }
+ void Put(long hash, const wxChar *value, wxObject *object)
+ { DoPut( value, hash, object ); }
// key and value are the same
- wxObject *Get(long value) const { return (wxObject*)DoGet( value ); }
- wxObject *Get(const wxChar *value) const { return (wxObject*)DoGet( value ); }
+ wxObject *Get(long value) const
+ { return (wxObject*)DoGet( value, value ); }
+ wxObject *Get(long hash, long value) const
+ { return (wxObject*)DoGet( value, hash ); }
+ wxObject *Get(const wxChar *value) const
+ { return (wxObject*)DoGet( value, MakeKey( value ) ); }
+ wxObject *Get(long hash, const wxChar *value) const
+ { return (wxObject*)DoGet( value, hash ); }
// Deletes entry and returns data if found
- wxObject *Delete(long key) { return (wxObject*)DoDelete( key ); }
- wxObject *Delete(const wxChar *key) { return (wxObject*)DoDelete( key ); }
+ wxObject *Delete(long key)
+ { return (wxObject*)DoDelete( key, key ); }
+ wxObject *Delete(long hash, long key)
+ { return (wxObject*)DoDelete( key, hash ); }
+ wxObject *Delete(const wxChar *key)
+ { return (wxObject*)DoDelete( key, MakeKey( key ) ); }
+ wxObject *Delete(long hash, const wxChar *key)
+ { return (wxObject*)DoDelete( key, hash ); }
-#if 0
// Construct your own integer key from a string, e.g. in case
// you need to combine it with something
- long MakeKey(const wxChar *string) const;
-#endif
+ long MakeKey(const wxChar *string) const
+ { return wxHashTableBase::MakeKey(string); }
+
// Way of iterating through whole hash table (e.g. to delete everything)
// Not necessary, of course, if you're only storing pointers to
// objects maintained separately
- void BeginFind() { m_iter = citer( &this->m_map, this->m_map.begin() ); }
- compatibility_iterator Next()
- {
- compatibility_iterator it = m_iter;
- if( m_iter )
- m_iter = m_iter->GetNext();
- return it;
- }
+ void BeginFind() { m_curr = NULL; m_currBucket = 0; }
+ Node* Next();
void Clear() { wxHashTableBase::Clear(); }
size_t GetCount() const { return wxHashTableBase::GetCount(); }
+protected:
+ virtual void DoDeleteContents( wxHashTableBase_Node* node );
+
+ // copy helper
+ void DoCopy( const wxHashTable& copy );
+
+ // searches the next node starting from bucket bucketStart and sets
+ // m_curr to it and m_currBucket to its bucket
+ void GetNextNode( size_t bucketStart );
private:
- compatibility_iterator m_iter;
+ // current node
+ Node* m_curr;
+
+ // bucket the current node belongs to
+ size_t m_currBucket;
};
#else // if !wxUSE_STL
// objects maintained separately
void BeginFind();
- wxNode *Next();
+ Node* Next();
void DeleteContents(bool flag);
void Clear();
public: \
hashclass(wxKeyType keyType = wxKEY_INTEGER, \
size_t size = wxHASH_SIZE_DEFAULT) \
- : wxHashTableBase(keyType, size) { } \
+ : wxHashTableBase() { Create(keyType, size); } \
\
~hashclass() { Destroy(); } \
\
- void Destroy() { m_map.clear(); } \
- void Put(long key, eltype *data) { DoPut(key, (void*)data); } \
- eltype *Get(long key) const { return (eltype*)DoGet(key); } \
- eltype *Delete(long key) { return (eltype*)DoDelete(key); } \
+ void Destroy() { Clear(); } \
+ void Put(long key, eltype *data) { DoPut(key, key, (void*)data); } \
+ void Put(long hash, long key, eltype *data) \
+ { DoPut(key, hash, (void*)data); } \
+ eltype *Get(long key) const { return (eltype*)DoGet(key, key); } \
+ eltype *Get(long hash, long key) const \
+ { return (eltype*)DoGet(key, hash); } \
+ eltype *Delete(long key) { return (eltype*)DoDelete(key, key); } \
+ eltype *Delete(long hash, long key) \
+ { return (eltype*)DoDelete(key, hash); } \
+ protected: \
+ virtual void DoDeleteContents( wxHashTableBase_Node* node ) \
+ { delete (eltype*)node->GetData(); } \
+ \
+ DECLARE_NO_COPY_CLASS(hashclass) \
}
#else // if !wxUSE_STL
#undef TEST_ALL
static const bool TEST_ALL = true;
#else
- #define TEST_UNICODE
+ #define TEST_HASH
+ #define TEST_HASHMAP
+ #define TEST_HASHSET
static const bool TEST_ALL = false;
#endif
WX_DEFINE_LIST(wxListFoos);
+#include "wx/timer.h"
+
static void TestHash()
{
wxPuts(_T("*** Testing wxHashTable ***\n"));
+ const int COUNT = 100;
+
+ wxStopWatch sw;
+
+ sw.Start();
{
wxHashTable hash(wxKEY_INTEGER, 10), hash2(wxKEY_STRING);
wxObject o;
int i;
- for ( i = 0; i < 100; ++i )
+ for ( i = 0; i < COUNT; ++i )
hash.Put(i, &o + i);
hash.BeginFind();
it = hash.Next();
}
- if (i != 100)
+ if (i != COUNT)
wxPuts(_T("Error in wxHashTable::compatibility_iterator\n"));
for ( i = 99; i >= 0; --i )
if( hash.Get(i) != &o + i )
wxPuts(_T("Error in wxHashTable::Get/Put\n"));
- for ( i = 0; i < 100; ++i )
+ for ( i = 0; i < COUNT; ++i )
hash.Put(i, &o + i + 20);
for ( i = 99; i >= 0; --i )
if( hash.Get(i) != &o + i)
wxPuts(_T("Error (2) in wxHashTable::Get/Put\n"));
- for ( i = 0; i < 50; ++i )
+ for ( i = 0; i < COUNT/2; ++i )
if( hash.Delete(i) != &o + i)
wxPuts(_T("Error in wxHashTable::Delete\n"));
- for ( i = 50; i < 100; ++i )
+ for ( i = COUNT/2; i < COUNT; ++i )
if( hash.Get(i) != &o + i)
wxPuts(_T("Error (3) in wxHashTable::Get/Put\n"));
- for ( i = 0; i < 50; ++i )
+ for ( i = 0; i < COUNT/2; ++i )
if( hash.Get(i) != &o + i + 20)
wxPuts(_T("Error (4) in wxHashTable::Put/Delete\n"));
- for ( i = 0; i < 50; ++i )
+ for ( i = 0; i < COUNT/2; ++i )
if( hash.Delete(i) != &o + i + 20)
wxPuts(_T("Error (2) in wxHashTable::Delete\n"));
- for ( i = 0; i < 50; ++i )
+ for ( i = 0; i < COUNT/2; ++i )
if( hash.Get(i) != NULL)
wxPuts(_T("Error (5) in wxHashTable::Put/Delete\n"));
if (hash2.Get(_T("bar")) != &o + 2)
wxPuts(_T("Error (2) in wxHashTable::Get/Put\n"));
}
-#if !wxUSE_STL
+
+ // and now some corner-case testing; 3 and 13 hash to the same bucket
+ {
+ wxHashTable hash(wxKEY_INTEGER, 10);
+ wxObject dummy;
+
+ hash.Put(3, &dummy);
+ hash.Delete(3);
+
+ if (hash.Get(3) != NULL)
+ wxPuts(_T("Corner case 1 failure\n"));
+
+ hash.Put(3, &dummy);
+ hash.Put(13, &dummy);
+ hash.Delete(3);
+
+ if (hash.Get(3) != NULL)
+ wxPuts(_T("Corner case 2 failure\n"));
+
+ hash.Delete(13);
+
+ if (hash.Get(13) != NULL)
+ wxPuts(_T("Corner case 3 failure\n"));
+
+ hash.Put(3, &dummy);
+ hash.Put(13, &dummy);
+ hash.Delete(13);
+
+ if (hash.Get(13) != NULL)
+ wxPuts(_T("Corner case 4 failure\n"));
+
+ hash.Delete(3);
+
+ if (hash.Get(3) != NULL)
+ wxPuts(_T("Corner case 5 failure\n"));
+ }
+
+ {
+ wxHashTable hash(wxKEY_INTEGER, 10);
+ wxObject dummy;
+
+ hash.Put(3, 7, &dummy + 7);
+ hash.Put(4, 8, &dummy + 8);
+
+ if (hash.Get(7) != NULL) wxPuts(_T("Key/Hash 1 failure\n"));
+ if (hash.Get(3, 7) != &dummy + 7) wxPuts(_T("Key/Hash 2 failure\n"));
+ if (hash.Get(4) != NULL) wxPuts(_T("Key/Hash 3 failure\n"));
+ if (hash.Get(3) != NULL) wxPuts(_T("Key/Hash 4 failure\n"));
+ if (hash.Get(8) != NULL) wxPuts(_T("Key/Hash 5 failure\n"));
+ if (hash.Get(8, 4) != NULL) wxPuts(_T("Key/Hash 6 failure\n"));
+
+ if (hash.Delete(7) != NULL) wxPuts(_T("Key/Hash 7 failure\n"));
+ if (hash.Delete(3) != NULL) wxPuts(_T("Key/Hash 8 failure\n"));
+ if (hash.Delete(3, 7) != &dummy + 7) wxPuts(_T("Key/Hash 8 failure\n"));
+ }
+
{
wxHashFoos hash;
hash.DeleteContents(true);
{
wxPuts(_T("ok (not found)"));
}
+
+ Foo* foo = hash.Delete(0);
+
+ wxPrintf(_T("Removed 1 foo: %u foos still there\n"), Foo::count);
+
+ delete foo;
+
+ wxPrintf(_T("Foo deleted: %u foos left\n"), Foo::count);
}
-#endif
wxPrintf(_T("Hash destroyed: %u foos left\n"), Foo::count);
wxPuts(_T("*** Testing wxHashTable finished ***\n"));
+
+ wxPrintf(_T("Time: %ld\n"), sw.Time());
}
#endif // TEST_HASH
current_node = (wxNode *) NULL;
}
-wxNode *wxHashTable::Next ()
+wxHashTable::Node* wxHashTable::Next ()
{
wxNode *found = (wxNode *) NULL;
bool end = FALSE;
m_count = 0;
}
-#endif // !wxUSE_STL
+#else // if wxUSE_STL
+
+#include "wx/object.h"
+
+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 )
+{
+}
+
+wxHashTableBase::~wxHashTableBase()
+{
+ Destroy();
+}
+
+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( const wxHashTable& table )
+{
+ DoCopy( table );
+}
+
+const wxHashTable& wxHashTable::operator=( const wxHashTable& table )
+{
+ Destroy();
+ DoCopy( table );
+
+ return *this;
+}
+
+void wxHashTable::DoCopy( const wxHashTable& 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_STL
projects / wxWidgets.git / commitdiff
