// Modified by: VZ at 25.02.00: type safe hashes with WX_DECLARE_HASH()
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c)
+// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_HASH_H__
#define _WX_HASH_H__
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "hash.h"
-#endif
-
#include "wx/defs.h"
-
-#if !wxUSE_STL && WXWIN_COMPATIBILITY_2_4
- #define wxUSE_OLD_HASH_TABLE 1
-#else
- #define wxUSE_OLD_HASH_TABLE 0
-#endif
+#include "wx/string.h"
#if !wxUSE_STL
#include "wx/object.h"
#else
- class WXDLLIMPEXP_BASE wxObject;
-#endif
-#if wxUSE_OLD_HASH_TABLE
- #include "wx/list.h"
-#endif
-#if WXWIN_COMPATIBILITY_2_4
- #include "wx/dynarray.h"
+ class WXDLLIMPEXP_FWD_BASE wxObject;
#endif
// the default size of the hash
* the list to find the desired item.
*/
-// ----------------------------------------------------------------------------
-// this is the base class for object hashes: hash tables which contain
-// pointers to objects
-// ----------------------------------------------------------------------------
-
-#if wxUSE_OLD_HASH_TABLE
-
-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 // if !wxUSE_OLD_HASH_TABLE
-
-#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;
+ wxString *string;
};
+// for some compilers (AIX xlC), defining it as friend inside the class is not
+// enough, so provide a real forward declaration
+class WXDLLIMPEXP_FWD_BASE wxHashTableBase;
+
class WXDLLIMPEXP_BASE wxHashTableBase_Node
{
- friend class WXDLLIMPEXP_BASE wxHashTableBase;
- typedef class WXDLLIMPEXP_BASE wxHashTableBase_Node _Node;
+ friend class WXDLLIMPEXP_FWD_BASE wxHashTableBase;
+ typedef class WXDLLIMPEXP_FWD_BASE wxHashTableBase_Node _Node;
public:
wxHashTableBase_Node( long key, void* value,
wxHashTableBase* table );
- wxHashTableBase_Node( const wxChar* key, void* value,
+ wxHashTableBase_Node( const wxString& key, void* value,
wxHashTableBase* table );
~wxHashTableBase_Node();
long GetKeyInteger() const { return m_key.integer; }
- const wxChar* GetKeyString() const { return m_key.string; }
+ const wxString& GetKeyString() const { return *m_key.string; }
void* GetData() const { return m_value; }
void SetData( void* data ) { m_value = data; }
: public wxObject
#endif
{
- friend class WXDLLIMPEXP_BASE wxHashTableBase_Node;
+ friend class WXDLLIMPEXP_FWD_BASE wxHashTableBase_Node;
public:
typedef wxHashTableBase_Node Node;
wxHashTableBase();
- virtual ~wxHashTableBase();
+ virtual ~wxHashTableBase() { }
void Create( wxKeyType keyType = wxKEY_INTEGER,
size_t size = wxHASH_SIZE_DEFAULT );
void DeleteContents( bool flag ) { m_deleteContents = flag; }
- static long MakeKey(const wxChar *string);
+ static long MakeKey(const wxString& string);
protected:
void DoPut( long key, long hash, void* data );
- void DoPut( const wxChar* key, long hash, void* data );
+ void DoPut( const wxString& key, long hash, void* data );
void* DoGet( long key, long hash ) const;
- void* DoGet( const wxChar* key, long hash ) const;
+ void* DoGet( const wxString& key, long hash ) const;
void* DoDelete( long key, long hash );
- void* DoDelete( const wxChar* key, long hash );
+ void* DoDelete( const wxString& key, long hash );
private:
// Remove the node from the hash, *only called from
DECLARE_NO_COPY_CLASS(wxHashTableBase)
};
-#endif // wxUSE_OLD_HASH_TABLE
-
-#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_OLD_HASH_TABLE
-
class WXDLLIMPEXP_BASE wxHashTable_Node : public wxHashTableBase_Node
{
- friend class WXDLLIMPEXP_BASE wxHashTable;
+ friend class WXDLLIMPEXP_FWD_BASE wxHashTable;
public:
wxHashTable_Node( long key, void* value,
wxHashTableBase* table )
: wxHashTableBase_Node( key, value, table ) { }
- wxHashTable_Node( const wxChar* key, void* value,
+ wxHashTable_Node( const wxString& key, void* value,
wxHashTableBase* table )
: wxHashTableBase_Node( key, value, table ) { }
: wxHashTableBase() { Create( keyType, size ); BeginFind(); }
wxHashTable( const wxHashTable& table );
- const wxHashTable& operator=( const wxHashTable& );
+ virtual ~wxHashTable() { Destroy(); }
- void Destroy() { Clear(); }
+ const wxHashTable& operator=( const wxHashTable& );
// key and value are the same
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)
+ void Put(long lhash, long value, wxObject *object)
+ { DoPut( value, lhash, object ); }
+ void Put(const wxString& value, wxObject *object)
{ DoPut( value, MakeKey( value ), object ); }
- void Put(long hash, const wxChar *value, wxObject *object)
- { DoPut( value, hash, object ); }
+ void Put(long lhash, const wxString& value, wxObject *object)
+ { DoPut( value, lhash, object ); }
// key and value are the same
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
+ wxObject *Get(long lhash, long value) const
+ { return (wxObject*)DoGet( value, lhash ); }
+ wxObject *Get(const wxString& value) const
{ return (wxObject*)DoGet( value, MakeKey( value ) ); }
- wxObject *Get(long hash, const wxChar *value) const
- { return (wxObject*)DoGet( value, hash ); }
+ wxObject *Get(long lhash, const wxString& value) const
+ { return (wxObject*)DoGet( value, lhash ); }
// Deletes entry and returns data if found
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)
+ wxObject *Delete(long lhash, long key)
+ { return (wxObject*)DoDelete( key, lhash ); }
+ wxObject *Delete(const wxString& key)
{ return (wxObject*)DoDelete( key, MakeKey( key ) ); }
- wxObject *Delete(long hash, const wxChar *key)
- { return (wxObject*)DoDelete( key, hash ); }
-
- // 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
- { return wxHashTableBase::MakeKey(string); }
+ wxObject *Delete(long lhash, const wxString& key)
+ { return (wxObject*)DoDelete( key, lhash ); }
// Way of iterating through whole hash table (e.g. to delete everything)
// Not necessary, of course, if you're only storing pointers to
size_t GetCount() const { return wxHashTableBase::GetCount(); }
protected:
- virtual void DoDeleteContents( wxHashTableBase_Node* node );
-
// copy helper
void DoCopy( const wxHashTable& copy );
// m_curr to it and m_currBucket to its bucket
void GetNextNode( size_t bucketStart );
private:
+ virtual void DoDeleteContents( wxHashTableBase_Node* node );
+
// current node
Node* m_curr;
size_t m_currBucket;
};
-#else // if wxUSE_OLD_HASH_TABLE
-
-class WXDLLIMPEXP_BASE wxHashTable : public wxObject
-{
-public:
- typedef wxNode Node;
- typedef wxNode* compatibility_iterator;
-
- int n;
- int current_position;
- wxNode *current_node;
-
- unsigned int key_type;
- wxList **hash_table;
-
- wxHashTable(int the_key_type = wxKEY_INTEGER,
- int size = wxHASH_SIZE_DEFAULT);
- ~wxHashTable();
-
- // copy ctor and assignment operator
- wxHashTable(const wxHashTable& table) : wxObject()
- { DoCopy(table); }
- wxHashTable& operator=(const wxHashTable& table)
- { Clear(); DoCopy(table); return *this; }
-
- void DoCopy(const wxHashTable& table);
-
- void Destroy();
-
- bool Create(int the_key_type = wxKEY_INTEGER,
- int size = wxHASH_SIZE_DEFAULT);
-
- // Note that there are 2 forms of Put, Get.
- // With a key and a value, the *value* will be checked
- // when a collision is detected. Otherwise, if there are
- // 2 items with a different value but the same key,
- // we'll retrieve the WRONG ONE. So where possible,
- // supply the required value along with the key.
- // In fact, the value-only versions make a key, and still store
- // the value. The use of an explicit key might be required
- // e.g. when combining several values into one key.
- // When doing that, it's highly likely we'll get a collision,
- // e.g. 1 + 2 = 3, 2 + 1 = 3.
-
- // key and value are NOT necessarily the same
- void Put(long key, long value, wxObject *object);
- void Put(long key, const wxChar *value, wxObject *object);
-
- // key and value are the same
- void Put(long value, wxObject *object);
- void Put(const wxChar *value, wxObject *object);
-
- // key and value not the same
- wxObject *Get(long key, long value) const;
- wxObject *Get(long key, const wxChar *value) const;
-
- // key and value are the same
- wxObject *Get(long value) const;
- wxObject *Get(const wxChar *value) const;
-
- // Deletes entry and returns data if found
- wxObject *Delete(long key);
- wxObject *Delete(const wxChar *key);
-
- wxObject *Delete(long key, int value);
- wxObject *Delete(long key, const wxChar *value);
-
- // 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;
-
- // 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();
- Node* Next();
-
- void DeleteContents(bool flag);
- void Clear();
-
- // Returns number of nodes
- size_t GetCount() const { return m_count; }
-
-private:
- size_t m_count; // number of elements in the hashtable
- bool m_deleteContents;
-
- DECLARE_DYNAMIC_CLASS(wxHashTable)
-};
-
-#endif // wxUSE_OLD_HASH_TABLE
-
-#if !wxUSE_OLD_HASH_TABLE
-
// 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) \
size_t size = wxHASH_SIZE_DEFAULT) \
: wxHashTableBase() { Create(keyType, size); } \
\
- ~hashclass() { Destroy(); } \
+ virtual ~hashclass() { Destroy(); } \
\
- 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); } \
+ void Put(long lhash, long key, eltype *data) \
+ { DoPut(key, lhash, (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 *Get(long lhash, long key) const \
+ { return (eltype*)DoGet(key, lhash); } \
eltype *Delete(long key) { return (eltype*)DoDelete(key, key); } \
- eltype *Delete(long hash, long key) \
- { return (eltype*)DoDelete(key, hash); } \
- protected: \
+ eltype *Delete(long lhash, long key) \
+ { return (eltype*)DoDelete(key, lhash); } \
+ private: \
virtual void DoDeleteContents( wxHashTableBase_Node* node ) \
{ delete (eltype*)node->GetData(); } \
\
DECLARE_NO_COPY_CLASS(hashclass) \
}
-#else // if wxUSE_OLD_HASH_TABLE
-
-#define _WX_DECLARE_HASH(eltype, listclass, hashclass, classexp) \
- classexp hashclass : public wxHashTableBase \
- { \
- public: \
- hashclass(wxKeyType keyType = wxKEY_INTEGER, \
- size_t size = wxHASH_SIZE_DEFAULT) \
- { Create(keyType, size); } \
- \
- ~hashclass() { Destroy(); } \
- \
- void Put(long key, long val, eltype *data) { DoPut(key, val, data); } \
- void Put(long key, eltype *data) { DoPut(key, key, data); } \
- \
- eltype *Get(long key, long value) const \
- { \
- wxNodeBase *node = GetNode(key, value); \
- return node ? ((listclass::Node *)node)->GetData() : (eltype *)0; \
- } \
- eltype *Get(long key) const { return Get(key, key); } \
- \
- eltype *Delete(long key, long value) \
- { \
- eltype *data; \
- \
- wxNodeBase *node = GetNode(key, value); \
- if ( node ) \
- { \
- data = ((listclass::Node *)node)->GetData(); \
- \
- delete node; \
- m_count--; \
- } \
- else \
- { \
- data = (eltype *)0; \
- } \
- \
- return data; \
- } \
- eltype *Delete(long key) { return Delete(key, key); } \
- \
- protected: \
- void DoPut(long key, long value, eltype *data) \
- { \
- size_t slot = (size_t)abs((int)(key % (long)m_hashSize)); \
- \
- if ( !m_hashTable[slot] ) \
- { \
- m_hashTable[slot] = new listclass(m_keyType); \
- if ( m_deleteContents ) \
- m_hashTable[slot]->DeleteContents(TRUE); \
- } \
- \
- ((listclass *)m_hashTable[slot])->Append(value, data); \
- m_count++; \
- } \
- \
- DECLARE_NO_COPY_CLASS(hashclass) \
- }
-
-#endif // wxUSE_OLD_HASH_TABLE
// this macro is to be used in the user code
#define WX_DECLARE_HASH(el, list, hash) \
(hash).Clear(); \
}
-#endif
- // _WX_HASH_H__
+#endif // _WX_HASH_H__
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