+// ----------------------------------------------------------------------------
+// this is the base class for object hashes: hash tables which contain
+// pointers to objects
+// ----------------------------------------------------------------------------
+
+#if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTableBase : public wxObject
+{
+public:
+ wxHashTableBase();
+
+ void Create(wxKeyType keyType = wxKEY_INTEGER,
+ size_t size = wxHASH_SIZE_DEFAULT);
+ void Destroy();
+
+ size_t GetSize() const { return m_hashSize; }
+ size_t GetCount() const { return m_count; }
+
+ void DeleteContents(bool flag);
+
+protected:
+ // find the node for (key, value)
+ wxNodeBase *GetNode(long key, long value) const;
+
+ // the array of lists in which we store the values for given key hash
+ wxListBase **m_hashTable;
+
+ // the size of m_lists array
+ size_t m_hashSize;
+
+ // the type of indexing we use
+ wxKeyType m_keyType;
+
+ // the total number of elements in the hash
+ size_t m_count;
+
+ // should we delete our data?
+ bool m_deleteContents;
+
+private:
+ // no copy ctor/assignment operator (yet)
+ DECLARE_NO_COPY_CLASS(wxHashTableBase)
+};
+
+#else
+
+#include "wx/hashmap.h"
+
+#if !defined(wxENUM_KEY_TYPE_DEFINED)
+#define wxENUM_KEY_TYPE_DEFINED
+
+enum wxKeyType
+{
+ wxKEY_NONE,
+ wxKEY_INTEGER,
+ wxKEY_STRING
+};
+
+#endif
+
+union wxHashKeyValue
+{
+ long integer;
+ wxChar *string;
+};
+
+struct WXDLLIMPEXP_BASE wxHashTableHash
+{
+ wxHashTableHash() { }
+ wxHashTableHash( wxKeyType keyType ) : m_keyType( keyType ) { }
+
+ wxKeyType m_keyType;
+
+ unsigned long operator ()( const wxHashKeyValue& k ) const
+ {
+ if( m_keyType == wxKEY_STRING )
+ return wxStringHash::wxCharStringHash( k.string );
+ else
+ return (unsigned long)k.integer;
+ }
+};
+
+struct WXDLLIMPEXP_BASE wxHashTableEqual
+{
+ wxHashTableEqual() { }
+ wxHashTableEqual( wxKeyType keyType ) : m_keyType( keyType ) { }
+
+ wxKeyType m_keyType;
+
+ 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;
+ }
+};
+
+WX_DECLARE_EXPORTED_HASH_MAP( wxHashKeyValue,
+ void*,
+ wxHashTableHash,
+ wxHashTableEqual,
+ wxHashTableBaseBase );
+
+class WXDLLIMPEXP_BASE wxHashTableBase
+{
+public:
+ wxHashTableBase( wxKeyType keyType = wxKEY_INTEGER,
+ size_t size = wxHASH_SIZE_DEFAULT )
+ : m_map( size, wxHashTableHash( keyType ),
+ wxHashTableEqual( keyType ) ),
+ m_keyType( keyType ) { }
+
+ ~wxHashTableBase()
+ {
+ 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++
+ }
+ }
+ }
+
+ size_t GetCount() const { return m_map.size(); }
+protected:
+ void DoPut( long key, void* data )
+ {
+ wxHashKeyValue k; k.integer = key;
+ m_map[k] = data;
+ }
+
+ void DoPut( const wxChar* key, void* data )
+ {
+ wxHashKeyValue k;
+ k.string = new wxChar[wxStrlen(key) + 1];
+ wxStrcpy(k.string, key);
+ m_map[k] = data;
+ }
+
+ void* DoGet( long key ) const
+ {
+ wxHashKeyValue k; k.integer = key;
+ wxHashTableBaseBase::const_iterator it = m_map.find( k );
+
+ return it != m_map.end() ? it->second : NULL;
+ }
+
+ void* DoGet( const wxChar* key ) const
+ {
+ wxHashKeyValue k; k.string = (wxChar*)key;
+ wxHashTableBaseBase::const_iterator it = m_map.find( k );
+
+ return it != m_map.end() ? it->second : NULL;
+ }
+
+ void* DoDelete( long key )
+ {
+ wxHashKeyValue k; k.integer = key;
+ wxHashTableBaseBase::iterator it = m_map.find( k );
+
+ if( it != m_map.end() )
+ {
+ void* data = it->second;
+
+ m_map.erase( it );
+ return data;
+ }
+
+ return NULL;
+ }
+
+ void* DoDelete( const wxChar* key )
+ {
+ 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;
+
+ m_map.erase( it );
+ delete[] k;
+ return data;
+ }
+
+ return NULL;
+ }
+
+ wxHashTableBaseBase m_map;
+ wxKeyType m_keyType;
+};
+
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL
+
+#if WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// a hash table which stores longs
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxHashTableLong : public wxObject
+{
+public:
+ wxHashTableLong(size_t size = wxHASH_SIZE_DEFAULT)
+ { Init(size); }
+ virtual ~wxHashTableLong();
+
+ void Create(size_t size = wxHASH_SIZE_DEFAULT);
+ void Destroy();
+
+ size_t GetSize() const { return m_hashSize; }
+ size_t GetCount() const { return m_count; }
+
+ void Put(long key, long value);
+ long Get(long key) const;
+ long Delete(long key);
+
+protected:
+ void Init(size_t size);
+
+private:
+ wxArrayLong **m_values,
+ **m_keys;
+
+ // the size of array above
+ size_t m_hashSize;
+
+ // the total number of elements in the hash
+ size_t m_count;
+
+ // not implemented yet
+ DECLARE_NO_COPY_CLASS(wxHashTableLong)
+};
+
+// ----------------------------------------------------------------------------
+// wxStringHashTable: a hash table which indexes strings with longs
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxStringHashTable : public wxObject
+{
+public:
+ wxStringHashTable(size_t sizeTable = wxHASH_SIZE_DEFAULT);
+ virtual ~wxStringHashTable();
+
+ // add a string associated with this key to the table
+ void Put(long key, const wxString& value);
+
+ // get the string from the key: if not found, an empty string is returned
+ // and the wasFound is set to FALSE if not NULL
+ wxString Get(long key, bool *wasFound = NULL) const;
+
+ // remove the item, returning TRUE if the item was found and deleted
+ bool Delete(long key) const;
+
+ // clean up
+ void Destroy();
+
+private:
+ wxArrayLong **m_keys;
+ wxArrayString **m_values;
+
+ // the size of array above
+ size_t m_hashSize;
+
+ DECLARE_NO_COPY_CLASS(wxStringHashTable)
+};
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+#endif // !wxUSE_STL
+
+// ----------------------------------------------------------------------------
+// for compatibility only
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTable : protected wxHashTableBase
+{
+ typedef wxHashTableBaseBase hash;
+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 );
+ }
+ citer GetPrevious() 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();
+ };
+public:
+ wxHashTable( wxKeyType keyType = wxKEY_INTEGER,
+ size_t size = wxHASH_SIZE_DEFAULT )
+ : wxHashTableBase( keyType, size ) { }
+
+ 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 ); }
+
+ // 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 ); }
+
+ // Deletes entry and returns data if found
+ wxObject *Delete(long key) { return (wxObject*)DoGet( key ); }
+ wxObject *Delete(const wxChar *key) { return (wxObject*)DoGet( key ); }
+
+#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
+ // 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 Clear() { m_map.clear(); }
+private:
+ compatibility_iterator m_iter;
+};
+
+#else // if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTable : public wxObject
projects / wxWidgets.git / blobdiff