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

diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h
index b08eedcf3031981acf8b19446e70cf18f83fa91c..47d583b840b84de620cb42ef911f38d0dee8c393 100644 (file)
--- a/include/wx/hashmap.h
+++ b/include/wx/hashmap.h
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        hashmap.h
+// Name:        wx/hashmap.h
 // Purpose:     wxHashMap class
 // Author:      Mattia Barbon
 // Modified by:
@@ -13,6 +13,7 @@
 #define _WX_HASHMAP_H_
 
 #include "wx/string.h"
+#include "wx/wxcrt.h"
 
 #if (defined(HAVE_EXT_HASH_MAP) || defined(HAVE_HASH_MAP)) \
     && (defined(HAVE_GNU_CXX_HASH_MAP) || defined(HAVE_STD_HASH_MAP))
@@ -34,7 +35,7 @@
 #endif
 
 #define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
-    typedef WX_HASH_MAP_NAMESPACE::hash_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME;
+    typedef WX_HASH_MAP_NAMESPACE::hash_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME
 
 #else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
 
@@ -143,8 +144,6 @@ public: \
         value_type m_value; \
     }; \
  \
-    CLASSEXP Iterator; \
-    friend CLASSEXP Iterator; \
 protected: \
     static void DeleteNode( _wxHashTable_NodeBase* node ) \
     { \
@@ -185,6 +184,7 @@ public: \
             m_node = next ? next : GetNextNode(); \
         } \
     }; \
+    friend class Iterator; \
  \
 public: \
     CLASSEXP iterator : public Iterator \
@@ -202,6 +202,7 @@ public: \
     { \
     public: \
         const_iterator() : Iterator() {} \
+        const_iterator(iterator i) : Iterator(i) {} \
         const_iterator( Node* node, const Self* ht ) \
             : Iterator( node, (Self*)ht ) {} \
         const_iterator& operator++() { PlusPlus();return *this; } \
@@ -270,9 +271,9 @@ public: \
     const_iterator end() const { return const_iterator( 0, this ); } \
     iterator end() { return iterator( 0, this ); } \
     const_iterator begin() const \
-        { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \
+        { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }  \
     iterator begin() \
-        { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \
+        { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }  \
  \
     size_type erase( const const_key_type& key ) \
     { \
@@ -337,25 +338,26 @@ protected: \
     /* returns NULL if not found */ \
     Node** GetNodePtr( const const_key_type& key ) const \
     { \
-        unsigned long hash = wx_static_cast(unsigned long, m_hasher( key )); \
-        Node** node = &m_table[hash % m_tableBuckets]; \
+        size_t bucket = m_hasher( key ) % m_tableBuckets; \
+        Node** node = &m_table[bucket]; \
  \
         while( *node ) \
         { \
             if( m_equals( m_getKey( (*node)->m_value ), key ) ) \
                 return node; \
+            /* Tell the compiler to not do any strict-aliasing assumptions with a void cast? Can we make such a runtime guarantee? */ \
             node = (Node**)&(*node)->m_nxt; \
         } \
  \
-        return 0; \
+        return NULL; \
     } \
  \
     /* returns NULL if not found */ \
     /* expressing it in terms of GetNodePtr is 5-8% slower :-( */ \
     Node* GetNode( const const_key_type& key ) const \
     { \
-        unsigned long hash = wx_static_cast(unsigned long, m_hasher( key )); \
-        Node* node = m_table[hash % m_tableBuckets]; \
+        size_t bucket = m_hasher( key ) % m_tableBuckets; \
+        Node* node = m_table[bucket]; \
  \
         while( node ) \
         { \
@@ -461,6 +463,23 @@ class WXDLLIMPEXP_BASE wxIntegerHash
     WX_HASH_MAP_NAMESPACE::hash<unsigned int> uintHash;
     WX_HASH_MAP_NAMESPACE::hash<short> shortHash;
     WX_HASH_MAP_NAMESPACE::hash<unsigned short> ushortHash;
+
+#if defined wxLongLong_t && !defined wxLongLongIsLong
+    // hash<wxLongLong_t> ought to work but doesn't on some compilers
+    #if (!defined SIZEOF_LONG_LONG && SIZEOF_LONG == 4) \
+        || (defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG * 2)
+    size_t longlongHash( wxLongLong_t x ) const
+    {
+        return longHash( wx_truncate_cast(long, x) ) ^
+               longHash( wx_truncate_cast(long, x >> (sizeof(long) * 8)) );
+    }
+    #elif defined SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == SIZEOF_LONG
+    WX_HASH_MAP_NAMESPACE::hash<long> longlongHash;
+    #else
+    WX_HASH_MAP_NAMESPACE::hash<wxLongLong_t> longlongHash;
+    #endif
+#endif
+
 public:
     wxIntegerHash() { }
     size_t operator()( long x ) const { return longHash( x ); }
@@ -469,6 +488,10 @@ public:
     size_t operator()( unsigned int x ) const { return uintHash( x ); }
     size_t operator()( short x ) const { return shortHash( x ); }
     size_t operator()( unsigned short x ) const { return ushortHash( x ); }
+#if defined wxLongLong_t && !defined wxLongLongIsLong
+    size_t operator()( wxLongLong_t x ) const { return longlongHash(x); }
+    size_t operator()( wxULongLong_t x ) const { return longlongHash(x); }
+#endif
 
     wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
 };
@@ -486,6 +509,10 @@ public:
     unsigned long operator()( unsigned int x ) const { return x; }
     unsigned long operator()( short x ) const { return (unsigned long)x; }
     unsigned long operator()( unsigned short x ) const { return x; }
+#if defined wxLongLong_t && !defined wxLongLongIsLong
+    wxULongLong_t operator()( wxLongLong_t x ) const { return wx_static_cast(wxULongLong_t, x); }
+    wxULongLong_t operator()( wxULongLong_t x ) const { return x; }
+#endif
 
     wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
 };
@@ -502,6 +529,10 @@ public:
     bool operator()( unsigned int a, unsigned int b ) const { return a == b; }
     bool operator()( short a, short b ) const { return a == b; }
     bool operator()( unsigned short a, unsigned short b ) const { return a == b; }
+#if defined wxLongLong_t && !defined wxLongLongIsLong
+    bool operator()( wxLongLong_t a, wxLongLong_t b ) const { return a == b; }
+    bool operator()( wxULongLong_t a, wxULongLong_t b ) const { return a == b; }
+#endif
 
     wxIntegerEqual& operator=(const wxIntegerEqual&) { return *this; }
 };
@@ -530,21 +561,29 @@ public:
     wxPointerEqual& operator=(const wxPointerEqual&) { return *this; }
 };
 
-// wxString, char*, wxChar*
+// wxString, char*, wchar_t*
 class WXDLLIMPEXP_BASE wxStringHash
 {
 public:
     wxStringHash() {}
     unsigned long operator()( const wxString& x ) const
-        { return wxCharStringHash( x.c_str() ); }
-    unsigned long operator()( const wxChar* x ) const
-        { return wxCharStringHash( x ); }
-    static unsigned long wxCharStringHash( const wxChar* );
-#if wxUSE_UNICODE
+        { return stringHash( x.wx_str() ); }
+    unsigned long operator()( const wchar_t* x ) const
+        { return stringHash( x ); }
     unsigned long operator()( const char* x ) const
-        { return charStringHash( x ); }
-    static unsigned long charStringHash( const char* );
-#endif // wxUSE_UNICODE
+        { return stringHash( x ); }
+
+#if WXWIN_COMPATIBILITY_2_8
+    static unsigned long wxCharStringHash( const wxChar* x )
+        { return stringHash(x); }
+    #if wxUSE_UNICODE
+    static unsigned long charStringHash( const char* x )
+        { return stringHash(x); }
+    #endif
+#endif // WXWIN_COMPATIBILITY_2_8
+
+    static unsigned long stringHash( const wchar_t* );
+    static unsigned long stringHash( const char* );
 
     wxStringHash& operator=(const wxStringHash&) { return *this; }
 };
@@ -618,7 +657,10 @@ public: \
  \
     /* count() == 0 | 1 */ \
     size_type count( const const_key_type& key ) \
-        { return GetNode( key ) ? 1 : 0; } \
+    { \
+        /* explicit cast needed to suppress CodeWarrior warnings */ \
+        return (size_type)(GetNode( key ) ? 1 : 0); \
+    } \
 }
 
 #endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
@@ -682,4 +724,3 @@ WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual,
 
 
 #endif // _WX_HASHMAP_H_
-