/////////////////////////////////////////////////////////////////////////////
-// Name: hashmap.h
+// Name: wx/hashmap.h
// Purpose: wxHashMap class
// Author: Mattia Barbon
// Modified by:
#ifndef _WX_HASHMAP_H_
#define _WX_HASHMAP_H_
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "hashmap.h"
+#include "wx/string.h"
+
+#if (defined(HAVE_EXT_HASH_MAP) || defined(HAVE_HASH_MAP)) \
+ && (defined(HAVE_GNU_CXX_HASH_MAP) || defined(HAVE_STD_HASH_MAP))
+ #define HAVE_STL_HASH_MAP
#endif
-#include "wx/string.h"
+#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
+
+#if defined(HAVE_EXT_HASH_MAP)
+ #include <ext/hash_map>
+#elif defined(HAVE_HASH_MAP)
+ #include <hash_map>
+#endif
+
+#if defined(HAVE_GNU_CXX_HASH_MAP)
+ #define WX_HASH_MAP_NAMESPACE __gnu_cxx
+#elif defined(HAVE_STD_HASH_MAP)
+ #define WX_HASH_MAP_NAMESPACE std
+#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
+
+#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
-#include <stddef.h> // for ptrdiff_t
#ifdef __WXWINCE__
typedef int ptrdiff_t;
+#else
+#include <stddef.h> // for ptrdiff_t
#endif
// private
{
return (void **)calloc(sz, sizeof(void*));
}
+ static void FreeTable(void *table)
+ {
+ free(table);
+ }
};
#define _WX_DECLARE_HASHTABLE( VALUE_T, KEY_T, HASH_T, KEY_EX_T, KEY_EQ_T, CLASSNAME, CLASSEXP, SHOULD_GROW, SHOULD_SHRINK ) \
value_type m_value; \
}; \
\
- struct Iterator; \
- friend struct Iterator; \
+ CLASSEXP Iterator; \
+ friend CLASSEXP Iterator; \
protected: \
static void DeleteNode( _wxHashTable_NodeBase* node ) \
{ \
/* */ \
/* forward iterator */ \
/* */ \
- struct Iterator \
+ CLASSEXP Iterator \
{ \
+ public: \
Node* m_node; \
Self* m_ht; \
\
}; \
\
public: \
- struct iterator:public Iterator \
+ CLASSEXP iterator : public Iterator \
{ \
+ public: \
iterator() : Iterator() {} \
iterator( Node* node, Self* ht ) : Iterator( node, ht ) {} \
iterator& operator++() { PlusPlus(); return *this; } \
pointer operator ->() const { return &(m_node->m_value); } \
}; \
\
- struct const_iterator:public Iterator \
+ CLASSEXP const_iterator : public Iterator \
{ \
+ 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; } \
{ \
clear(); \
\
- free(m_table); \
+ FreeTable(m_table); \
} \
\
hasher hash_funct() { return m_hasher; } \
} \
static Node* CopyNode( Node* node ) { return new Node( *node ); } \
\
- Node* GetOrCreateNode( const value_type& value ) \
+ Node* GetOrCreateNode( const value_type& value, bool& created ) \
{ \
const const_key_type& key = m_getKey( value ); \
size_t bucket = m_hasher( key ) % m_tableBuckets; \
while( node ) \
{ \
if( m_equals( m_getKey( node->m_value ), key ) ) \
+ { \
+ created = false; \
return node; \
+ } \
node = node->m_next(); \
} \
- return CreateNode( value , bucket); \
+ created = true; \
+ return CreateNode( value, bucket); \
}\
Node * CreateNode( const value_type& value, size_t bucket ) \
{\
/* returns NULL if not found */ \
Node** GetNodePtr( const const_key_type& key ) const \
{ \
- unsigned long hash = 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 = 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 ) \
{ \
this, (_wxHashTable_NodeBase**)m_table, \
(BucketFromNode)GetBucketForNode,\
(ProcessNode)&DummyProcessNode ); \
- free(srcTable); \
+ FreeTable(srcTable); \
} \
\
/* this must be called _after_ m_table has been cleaned */ \
};
// grow/shrink predicates
-inline bool never_grow( size_t, size_t ) { return FALSE; }
-inline bool never_shrink( size_t, size_t ) { return FALSE; }
+inline bool never_grow( size_t, size_t ) { return false; }
+inline bool never_shrink( size_t, size_t ) { return false; }
inline bool grow_lf70( size_t buckets, size_t items )
{
return float(items)/float(buckets) >= 0.85;
}
+#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+
// ----------------------------------------------------------------------------
// hashing and comparison functors
// ----------------------------------------------------------------------------
// operators to suppress warnings about "statement with no effect" from gcc
// in the hash table class assignment operator (where they're assigned)
+#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
+
+// integer types
+class WXDLLIMPEXP_BASE wxIntegerHash
+{
+ WX_HASH_MAP_NAMESPACE::hash<long> longHash;
+ WX_HASH_MAP_NAMESPACE::hash<unsigned long> ulongHash;
+ WX_HASH_MAP_NAMESPACE::hash<int> intHash;
+ 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 ); }
+ size_t operator()( unsigned long x ) const { return ulongHash( x ); }
+ size_t operator()( int x ) const { return intHash( x ); }
+ 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; }
+};
+
+#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+
// integer types
class WXDLLIMPEXP_BASE wxIntegerHash
{
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; }
};
+#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+
class WXDLLIMPEXP_BASE wxIntegerEqual
{
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; }
};
public:
wxPointerHash() { }
- // TODO: this might not work well on architectures with 64 bit pointers but
- // 32 bit longs, we should use % ULONG_MAX there
- unsigned long operator()( const void* k ) const { return (unsigned long)wxPtrToULong(k); }
+#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
+ size_t operator()( const void* k ) const { return (size_t)k; }
+#else
+ wxUIntPtr operator()( const void* k ) const { return wxPtrToUInt(k); }
+#endif
wxPointerHash& operator=(const wxPointerHash&) { return *this; }
};
wxStringEqual& operator=(const wxStringEqual&) { return *this; }
};
+#if !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+
#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
_WX_DECLARE_PAIR( KEY_T, VALUE_T, CLASSNAME##_wxImplementation_Pair, CLASSEXP ) \
_WX_DECLARE_HASH_MAP_KEY_EX( KEY_T, CLASSNAME##_wxImplementation_Pair, CLASSNAME##_wxImplementation_KeyEx, CLASSEXP ) \
{ \
public: \
typedef VALUE_T mapped_type; \
+ _WX_DECLARE_PAIR( iterator, bool, Insert_Result, CLASSEXP ) \
\
- CLASSNAME( size_type hint = 100, hasher hf = hasher(), key_equal eq = key_equal() ) \
- : CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, CLASSNAME##_wxImplementation_KeyEx() ) {} \
+ wxEXPLICIT CLASSNAME( size_type hint = 100, hasher hf = hasher(), \
+ key_equal eq = key_equal() ) \
+ : CLASSNAME##_wxImplementation_HashTable( hint, hf, eq, \
+ CLASSNAME##_wxImplementation_KeyEx() ) {} \
\
mapped_type& operator[]( const const_key_type& key ) \
{ \
- return GetOrCreateNode( CLASSNAME##_wxImplementation_Pair( key, mapped_type() ) )->m_value.second; \
+ bool created; \
+ return GetOrCreateNode( \
+ CLASSNAME##_wxImplementation_Pair( key, mapped_type() ), \
+ created)->m_value.second; \
} \
\
const_iterator find( const const_key_type& key ) const \
return iterator( GetNode( key ), this ); \
} \
\
- void insert( const value_type& v ) { (*this)[v.first] = v.second; } \
+ Insert_Result insert( const value_type& v ) \
+ { \
+ bool created; \
+ Node *node = GetOrCreateNode( \
+ CLASSNAME##_wxImplementation_Pair( v.first, v.second ), \
+ created); \
+ if ( !created ) \
+ node->m_value.second = v.second; \
+ return Insert_Result(iterator(node, this), created); \
+ } \
\
size_type erase( const key_type& k ) \
{ return CLASSNAME##_wxImplementation_HashTable::erase( k ); } \
\
/* 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)
+
// these macros are to be used in the user code
#define WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME) \
_WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, class )
(hashmap).clear(); \
}
-#endif // _WX_HASHMAP_H_
+//---------------------------------------------------------------------------
+// Declarations of common hashmap classes
+WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual,
+ wxLongToLongHashMap, class WXDLLIMPEXP_BASE );
+
+
+#endif // _WX_HASHMAP_H_
projects / wxWidgets.git / blobdiff