+// ----------------------------------------------------------------------------
+// a hash table which stores longs
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT 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 WXDLLEXPORT 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;
+
+ // 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)
+};
+
+// ----------------------------------------------------------------------------
+// for compatibility only
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxHashTable : public wxObject
+{
+public:
+ 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) { 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();
+ wxNode *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)
+};
+
+// defines a new type safe hash table which stores the elements of type eltype
+// in lists of class listclass
+#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++; \
+ } \
+ }
+
+// 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 WXDLLEXPORT)
+
projects / wxWidgets.git / blobdiff