Patch #826420, and also adapted to new SWIG

[wxWidgets.git] / include / wx / hash.h

diff --git a/include/wx/hash.h b/include/wx/hash.h
index 79e8339577ce7f066dfdfe1322cd3551a8ae1f7a..3720dd0c1fd0c99246c3e1d932baa2bf42cb1d13 100644 (file)
--- a/include/wx/hash.h
+++ b/include/wx/hash.h
@@ -12,12 +12,20 @@
 #ifndef _WX_HASH_H__
 #define _WX_HASH_H__
 
 #ifndef _WX_HASH_H__
 #define _WX_HASH_H__
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma interface "hash.h"
 #endif
 
 #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)
 
 // the default size of the hash
 #define wxHASH_SIZE_DEFAULT     (1000)


@@ -34,7 +42,9 @@
 // pointers to objects
 // ----------------------------------------------------------------------------
 
 // pointers to objects
 // ----------------------------------------------------------------------------
 

-class WXDLLEXPORT wxHashTableBase : public wxObject
+#if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxHashTableBase : public wxObject

 {
 public:
     wxHashTableBase();
 {
 public:
     wxHashTableBase();


@@ -69,17 +79,209 @@ protected:
 
 private:
     // no copy ctor/assignment operator (yet)
 
 private:
     // no copy ctor/assignment operator (yet)

-    DECLARE_NO_COPY_CLASS(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
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // a hash table which stores longs
 // ----------------------------------------------------------------------------
 

-class WXDLLEXPORT wxHashTableLong : public wxObject
+class WXDLLIMPEXP_BASE wxHashTableLong : public wxObject

 {
 public:
 {
 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);
     virtual ~wxHashTableLong();
 
     void Create(size_t size = wxHASH_SIZE_DEFAULT);


@@ -106,14 +308,14 @@ private:
     size_t m_count;
 
     // not implemented yet
     size_t m_count;
 
     // not implemented yet

-    DECLARE_NO_COPY_CLASS(wxHashTableLong);
+    DECLARE_NO_COPY_CLASS(wxHashTableLong)

 };
 
 // ----------------------------------------------------------------------------
 // wxStringHashTable: a hash table which indexes strings with longs
 // ----------------------------------------------------------------------------
 
 };
 
 // ----------------------------------------------------------------------------
 // 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);
 {
 public:
     wxStringHashTable(size_t sizeTable = wxHASH_SIZE_DEFAULT);


@@ -126,6 +328,9 @@ public:
     // and the wasFound is set to FALSE if not NULL
     wxString Get(long key, bool *wasFound = NULL) const;
 
     // 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();
 
     // clean up
     void Destroy();
 


@@ -136,14 +341,110 @@ private:
     // the size of array above
     size_t m_hashSize;
 
     // the size of array above
     size_t m_hashSize;
 

-    DECLARE_NO_COPY_CLASS(wxStringHashTable);
+    DECLARE_NO_COPY_CLASS(wxStringHashTable)

 };
 
 };
 

+#endif // WXWIN_COMPATIBILITY_2_4
+
+#endif  // !wxUSE_STL
+

 // ----------------------------------------------------------------------------
 // for compatibility only
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // 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;
 {
 public:
     int n;


@@ -158,7 +459,8 @@ public:
     ~wxHashTable();
 
     // copy ctor and assignment operator
     ~wxHashTable();
 
     // copy ctor and assignment operator

-    wxHashTable(const wxHashTable& table) { DoCopy(table); }
+    wxHashTable(const wxHashTable& table) : wxObject()
+        { DoCopy(table); }

     wxHashTable& operator=(const wxHashTable& table)
         { Clear(); DoCopy(table); return *this; }
 
     wxHashTable& operator=(const wxHashTable& table)
         { Clear(); DoCopy(table); return *this; }
 


@@ -221,6 +523,7 @@ public:
     // Returns number of nodes
     size_t GetCount() const { return m_count; }
 
     // 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;
 private:
     size_t m_count;             // number of elements in the hashtable
     bool m_deleteContents;


@@ -228,8 +531,30 @@ private:
     DECLARE_DYNAMIC_CLASS(wxHashTable)
 };
 
     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
 // 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                                \
     {                                                                          \
 #define _WX_DECLARE_HASH(eltype, listclass, hashclass, classexp)               \
     classexp hashclass : public wxHashTableBase                                \
     {                                                                          \


@@ -274,7 +599,7 @@ private:
     protected:                                                                 \
         void DoPut(long key, long value, eltype *data)                         \
         {                                                                      \
     protected:                                                                 \
         void DoPut(long key, long value, eltype *data)                         \
         {                                                                      \

-            size_t slot = (size_t)abs(key % m_hashSize);                       \
+            size_t slot = (size_t)abs((int)(key % (long)m_hashSize));          \

                                                                                \
             if ( !m_hashTable[slot] )                                          \
             {                                                                  \
                                                                                \
             if ( !m_hashTable[slot] )                                          \
             {                                                                  \


@@ -286,8 +611,12 @@ private:
             ((listclass *)m_hashTable[slot])->Append(value, data);             \
             m_count++;                                                         \
         }                                                                      \
             ((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)
 // this macro is to be used in the user code
 #define WX_DECLARE_HASH(el, list, hash) \
     _WX_DECLARE_HASH(el, list, hash, class)


@@ -297,5 +626,26 @@ private:
 #define WX_DECLARE_EXPORTED_HASH(el, list, hash)  \
     _WX_DECLARE_HASH(el, list, hash, class WXDLLEXPORT)
 
 #define WX_DECLARE_EXPORTED_HASH(el, list, hash)  \
     _WX_DECLARE_HASH(el, list, hash, class WXDLLEXPORT)
 

+#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__
 #endif
     // _WX_HASH_H__