initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/hash.h

@@ -0,0 +1,315 @@
+/////////////////////////////////////////////////////////////////////////////
+// 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;
+
+// and clang doesn't like using WXDLLIMPEXP_FWD_BASE inside a typedef.
+class WXDLLIMPEXP_FWD_BASE wxHashTableBase_Node;
+
+class WXDLLIMPEXP_BASE wxHashTableBase_Node
+{
+    friend class wxHashTableBase;
+    typedef class 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() = default;
+
+    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 destroys
+    // 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 = nullptr; 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 ) override;
+
+    // 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 ) override\
+            { 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__