8f8d58d193
Change {DECLARE,IMPLEMENT}_*CLASS and {DECLARE,BEGIN,END}_EVENT_TABLE
occurrences to use the wx-prefixed version of the macros.
313 lines
12 KiB
C++
313 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/hash.h
|
|
// Purpose: wxHashTable class
|
|
// Author: Julian Smart
|
|
// Modified by: VZ at 25.02.00: type safe hashes with WX_DECLARE_HASH()
|
|
// Created: 01/02/97
|
|
// Copyright: (c) Julian Smart
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_HASH_H__
|
|
#define _WX_HASH_H__
|
|
|
|
#include "wx/defs.h"
|
|
#include "wx/string.h"
|
|
|
|
#if !wxUSE_STD_CONTAINERS
|
|
#include "wx/object.h"
|
|
#else
|
|
class WXDLLIMPEXP_FWD_BASE wxObject;
|
|
#endif
|
|
|
|
// the default size of the hash
|
|
#define wxHASH_SIZE_DEFAULT (1000)
|
|
|
|
/*
|
|
* A hash table is an array of user-definable size with lists
|
|
* of data items hanging off the array positions. Usually there'll
|
|
* be a hit, so no search is required; otherwise we'll have to run down
|
|
* the list to find the desired item.
|
|
*/
|
|
|
|
union wxHashKeyValue
|
|
{
|
|
long integer;
|
|
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_FWD_BASE wxHashTableBase;
|
|
typedef class WXDLLIMPEXP_FWD_BASE wxHashTableBase_Node _Node;
|
|
public:
|
|
wxHashTableBase_Node( long key, void* value,
|
|
wxHashTableBase* table );
|
|
wxHashTableBase_Node( const wxString& key, void* value,
|
|
wxHashTableBase* table );
|
|
~wxHashTableBase_Node();
|
|
|
|
long GetKeyInteger() const { return m_key.integer; }
|
|
const wxString& GetKeyString() const { return *m_key.string; }
|
|
|
|
void* GetData() const { return m_value; }
|
|
void SetData( void* data ) { m_value = data; }
|
|
|
|
protected:
|
|
_Node* GetNext() const { return m_next; }
|
|
|
|
protected:
|
|
// next node in the chain
|
|
wxHashTableBase_Node* m_next;
|
|
|
|
// key
|
|
wxHashKeyValue m_key;
|
|
|
|
// value
|
|
void* m_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_STD_CONTAINERS
|
|
: public wxObject
|
|
#endif
|
|
{
|
|
friend class WXDLLIMPEXP_FWD_BASE wxHashTableBase_Node;
|
|
public:
|
|
typedef wxHashTableBase_Node Node;
|
|
|
|
wxHashTableBase();
|
|
virtual ~wxHashTableBase() { }
|
|
|
|
void Create( wxKeyType keyType = wxKEY_INTEGER,
|
|
size_t size = wxHASH_SIZE_DEFAULT );
|
|
void Clear();
|
|
void Destroy();
|
|
|
|
size_t GetSize() const { return m_size; }
|
|
size_t GetCount() const { return m_count; }
|
|
|
|
void DeleteContents( bool flag ) { m_deleteContents = flag; }
|
|
|
|
static long MakeKey(const wxString& string);
|
|
|
|
protected:
|
|
void DoPut( long key, long hash, void* data );
|
|
void DoPut( const wxString& key, long hash, void* data );
|
|
void* DoGet( long key, long hash ) const;
|
|
void* DoGet( const wxString& key, long hash ) const;
|
|
void* DoDelete( long key, long hash );
|
|
void* DoDelete( const wxString& key, long hash );
|
|
|
|
private:
|
|
// Remove the node from the hash, *only called from
|
|
// ~wxHashTable*_Node destructor
|
|
void DoRemoveNode( wxHashTableBase_Node* node );
|
|
|
|
// 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 );
|
|
|
|
// inserts a node in the table (at the end of the chain)
|
|
void DoInsertNode( size_t bucket, wxHashTableBase_Node* node );
|
|
|
|
// 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 );
|
|
|
|
// unconditionally deletes node value (invoking the
|
|
// correct destructor)
|
|
virtual void DoDeleteContents( wxHashTableBase_Node* node ) = 0;
|
|
|
|
protected:
|
|
// number of buckets
|
|
size_t m_size;
|
|
|
|
// number of nodes (key/value pairs)
|
|
size_t m_count;
|
|
|
|
// table
|
|
Node** m_table;
|
|
|
|
// key typ (INTEGER/STRING)
|
|
wxKeyType m_keyType;
|
|
|
|
// delete contents when hash is cleared
|
|
bool m_deleteContents;
|
|
|
|
private:
|
|
wxDECLARE_NO_COPY_CLASS(wxHashTableBase);
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// for compatibility only
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_BASE wxHashTable_Node : public wxHashTableBase_Node
|
|
{
|
|
friend class WXDLLIMPEXP_FWD_BASE wxHashTable;
|
|
public:
|
|
wxHashTable_Node( long key, void* value,
|
|
wxHashTableBase* table )
|
|
: wxHashTableBase_Node( key, value, table ) { }
|
|
wxHashTable_Node( const wxString& 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() { Create( keyType, size ); BeginFind(); }
|
|
wxHashTable( const wxHashTable& table );
|
|
|
|
virtual ~wxHashTable() { Destroy(); }
|
|
|
|
const wxHashTable& operator=( const wxHashTable& );
|
|
|
|
// key and value are the same
|
|
void Put(long value, wxObject *object)
|
|
{ DoPut( value, value, 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 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 lhash, long value) const
|
|
{ return (wxObject*)DoGet( value, lhash ); }
|
|
wxObject *Get(const wxString& value) const
|
|
{ return (wxObject*)DoGet( value, MakeKey( value ) ); }
|
|
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 lhash, long key)
|
|
{ return (wxObject*)DoDelete( key, lhash ); }
|
|
wxObject *Delete(const wxString& key)
|
|
{ return (wxObject*)DoDelete( key, MakeKey( key ) ); }
|
|
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
|
|
// objects maintained separately
|
|
void BeginFind() { m_curr = NULL; m_currBucket = 0; }
|
|
Node* Next();
|
|
|
|
void Clear() { wxHashTableBase::Clear(); }
|
|
|
|
size_t GetCount() const { return wxHashTableBase::GetCount(); }
|
|
protected:
|
|
// 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:
|
|
virtual void DoDeleteContents( wxHashTableBase_Node* node ) wxOVERRIDE;
|
|
|
|
// current node
|
|
Node* m_curr;
|
|
|
|
// bucket the current node belongs to
|
|
size_t m_currBucket;
|
|
};
|
|
|
|
// 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() { Create(keyType, size); } \
|
|
\
|
|
virtual ~hashclass() { Destroy(); } \
|
|
\
|
|
void Put(long key, eltype *data) { DoPut(key, key, (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 lhash, long key) const \
|
|
{ return (eltype*)DoGet(key, lhash); } \
|
|
eltype *Delete(long key) { return (eltype*)DoDelete(key, key); } \
|
|
eltype *Delete(long lhash, long key) \
|
|
{ return (eltype*)DoDelete(key, lhash); } \
|
|
private: \
|
|
virtual void DoDeleteContents( wxHashTableBase_Node* node ) \
|
|
{ delete (eltype*)node->GetData(); } \
|
|
\
|
|
wxDECLARE_NO_COPY_CLASS(hashclass); \
|
|
}
|
|
|
|
|
|
// this macro is to be used in the user code
|
|
#define WX_DECLARE_HASH(el, list, hash) \
|
|
_WX_DECLARE_HASH(el, list, hash, class)
|
|
|
|
// and this one does exactly the same thing but should be used inside the
|
|
// library
|
|
#define WX_DECLARE_EXPORTED_HASH(el, list, hash) \
|
|
_WX_DECLARE_HASH(el, list, hash, class WXDLLIMPEXP_CORE)
|
|
|
|
#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__
|