#ifndef _WX_HASH_H__
#define _WX_HASH_H__
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "hash.h"
#endif
-#include "wx/list.h"
-#include "wx/dynarray.h"
+#include "wx/defs.h"
+
+#if !wxUSE_STL
+ #include "wx/list.h"
+#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)
// pointers to objects
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxHashTableBase : public wxObject
+#if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTableBase : public wxObject
{
public:
wxHashTableBase();
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,
+ wxHashTableBaseBaseBase );
+
+// hack: we should really have HASH_MULTI(MAP|SET), but this requires
+// less work
+
+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));
+ }
+};
+
+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() { 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);
+ }
+
+ void DoPut( const wxChar* key, void* data )
+ {
+ wxASSERT( m_keyType == wxKEY_STRING );
+
+ wxHashKeyValue k;
+ k.string = wxStrcpy(new wxChar[wxStrlen(key) + 1], key);
+ m_map.multi_insert(k, data);
+ }
+
+ void* DoGet( long key ) const
+ {
+ wxASSERT( m_keyType == wxKEY_INTEGER );
+
+ 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
+ {
+ wxASSERT( m_keyType == wxKEY_STRING );
+
+ 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 )
+ {
+ wxASSERT( m_keyType == wxKEY_INTEGER );
+
+ 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 )
+ {
+ wxASSERT( m_keyType == wxKEY_STRING );
+
+ 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 WXDLLEXPORT wxHashTableLong : public wxObject
+class WXDLLIMPEXP_BASE wxHashTableLong : public wxObject
{
public:
- wxHashTableLong(size_t size = wxHASH_SIZE_DEFAULT) { Init(size); }
+ wxHashTableLong(size_t size = wxHASH_SIZE_DEFAULT)
+ { Init(size); }
virtual ~wxHashTableLong();
void Create(size_t size = wxHASH_SIZE_DEFAULT);
// wxStringHashTable: a hash table which indexes strings with longs
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxStringHashTable : public wxObject
+class WXDLLIMPEXP_BASE wxStringHashTable : public wxObject
{
public:
wxStringHashTable(size_t sizeTable = wxHASH_SIZE_DEFAULT);
// 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();
DECLARE_NO_COPY_CLASS(wxStringHashTable)
};
+#endif // WXWIN_COMPATIBILITY_2_4
+
+#endif // !wxUSE_STL
+
// ----------------------------------------------------------------------------
// for compatibility only
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxHashTable : public wxObject
+#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 );
+ }
+ 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*)DoDelete( key ); }
+ wxObject *Delete(const wxChar *key) { return (wxObject*)DoDelete( 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() { wxHashTableBase::Clear(); }
+
+ size_t GetCount() const { return wxHashTableBase::GetCount(); }
+private:
+ compatibility_iterator m_iter;
+};
+
+#else // if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTable : public wxObject
{
public:
int n;
~wxHashTable();
// copy ctor and assignment operator
- wxHashTable(const wxHashTable& table) : wxObject() { DoCopy(table); }
+ wxHashTable(const wxHashTable& table) : wxObject()
+ { DoCopy(table); }
wxHashTable& operator=(const wxHashTable& table)
{ Clear(); DoCopy(table); return *this; }
// Returns number of nodes
size_t GetCount() const { return m_count; }
+ typedef wxNode* compatibility_iterator;
private:
size_t m_count; // number of elements in the hashtable
bool m_deleteContents;
DECLARE_DYNAMIC_CLASS(wxHashTable)
};
+#endif
+
+#if wxUSE_STL
+
// defines a new type safe hash table which stores the elements of type eltype
// in lists of class listclass
+#define _WX_DECLARE_HASH(eltype, dummy, hashclass, classexp) \
+ classexp hashclass : public wxHashTableBase \
+ { \
+ public: \
+ hashclass(wxKeyType keyType = wxKEY_INTEGER, \
+ size_t size = wxHASH_SIZE_DEFAULT) \
+ : wxHashTableBase(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); } \
+ }
+
+#else // if !wxUSE_STL
+
#define _WX_DECLARE_HASH(eltype, listclass, hashclass, classexp) \
classexp hashclass : public wxHashTableBase \
{ \
((listclass *)m_hashTable[slot])->Append(value, data); \
m_count++; \
} \
+ \
+ DECLARE_NO_COPY_CLASS(hashclass) \
}
+#endif
+
// this macro is to be used in the user code
#define WX_DECLARE_HASH(el, list, hash) \
_WX_DECLARE_HASH(el, list, hash, class)
#define WX_DECLARE_USER_EXPORTED_HASH(el, list, hash, usergoo) \
_WX_DECLARE_HASH(el, list, hash, class usergoo)
+// delete all hash elements
+//
+// NB: the class declaration of the hash elements must be visible from the
+// place where you use this macro, otherwise the proper destructor may not
+// be called (a decent compiler should give a warning about it, but don't
+// count on it)!
+#define WX_CLEAR_HASH_TABLE(hash) \
+ { \
+ (hash).BeginFind(); \
+ wxHashTable::compatibility_iterator it = (hash).Next(); \
+ while( it ) \
+ { \
+ delete it->GetData(); \
+ it = (hash).Next(); \
+ } \
+ (hash).Clear(); \
+ }
+
#endif
// _WX_HASH_H__
projects / wxWidgets.git / blobdiff