/////////////////////////////////////////////////////////////////////////////
-// 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"
-#endif
-
#include "wx/string.h"
+#include "wx/wxcrt.h"
+
+// In wxUSE_STD_CONTAINERS build we prefer to use the standard hash map class
+// but it can be either in non-standard hash_map header (old g++ and some other
+// STL implementations) or in C++0x standard unordered_map which can in turn be
+// available either in std::tr1 or std namespace itself
+//
+// To summarize: if std::unordered_map is available use it, otherwise use tr1
+// and finally fall back to non-standard hash_map
#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
-#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
+#if wxUSE_STD_CONTAINERS && \
+ (defined(HAVE_STD_UNORDERED_MAP) || defined(HAVE_TR1_UNORDERED_MAP))
+
+#if defined(HAVE_STD_UNORDERED_MAP)
+ #include <unordered_map>
+ #define WX_HASH_MAP_NAMESPACE std
+#elif defined(HAVE_TR1_UNORDERED_MAP)
+ #include <tr1/unordered_map>
+ #define WX_HASH_MAP_NAMESPACE std::tr1
+#endif
+
+#define _WX_DECLARE_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME, CLASSEXP ) \
+ typedef WX_HASH_MAP_NAMESPACE::unordered_map< KEY_T, VALUE_T, HASH_T, KEY_EQ_T > CLASSNAME
+
+#elif wxUSE_STD_CONTAINERS && defined(HAVE_STL_HASH_MAP)
#if defined(HAVE_EXT_HASH_MAP)
#include <ext/hash_map>
#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)
+#else // !wxUSE_STD_CONTAINERS || no std::{hash,unordered}_map class available
+#define wxNEEDS_WX_HASH_MAP
#ifdef __WXWINCE__
typedef int ptrdiff_t;
// private
struct WXDLLIMPEXP_BASE _wxHashTable_NodeBase
{
- _wxHashTable_NodeBase() : m_nxt(0) {}
+ _wxHashTable_NodeBase() : m_next(NULL) {}
- _wxHashTable_NodeBase* m_nxt;
+ _wxHashTable_NodeBase* m_next;
// Cannot do this:
-// DECLARE_NO_COPY_CLASS(_wxHashTable_NodeBase)
+// wxDECLARE_NO_COPY_CLASS(_wxHashTable_NodeBase);
// without rewriting the macros, which require a public copy constructor.
};
for( size_t i = 0; i < buckets; ++i )
if( table[i] )
return table[i];
- return 0;
+ return NULL;
}
// as static const unsigned prime_count = 31 but works with all compilers
{
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 ) \
typedef const KEY_T const_key_type; \
typedef const VALUE_T const_mapped_type; \
public: \
- struct Node; \
typedef KEY_EX_T key_extractor; \
typedef CLASSNAME Self; \
protected: \
- Node** m_table; \
+ _wxHashTable_NodeBase** m_table; \
size_t m_tableBuckets; \
size_t m_items; \
hasher m_hasher; \
public: \
Node( const value_type& value ) \
: m_value( value ) {} \
- Node* m_next() { return (Node*)this->m_nxt; } \
+ Node* next() { return static_cast<Node*>(m_next); } \
\
value_type m_value; \
}; \
\
- CLASSEXP Iterator; \
- friend CLASSEXP Iterator; \
protected: \
static void DeleteNode( _wxHashTable_NodeBase* node ) \
{ \
- delete (Node*)node; \
+ delete static_cast<Node*>(node); \
} \
public: \
/* */ \
Node* m_node; \
Self* m_ht; \
\
- Iterator() : m_node(0), m_ht(0) {} \
+ Iterator() : m_node(NULL), m_ht(NULL) {} \
Iterator( Node* node, const Self* ht ) \
- : m_node(node), m_ht((Self*)ht) {} \
+ : m_node(node), m_ht(const_cast<Self*>(ht)) {} \
bool operator ==( const Iterator& it ) const \
{ return m_node == it.m_node; } \
bool operator !=( const Iterator& it ) const \
for( size_type i = bucket + 1; i < m_ht->m_tableBuckets; ++i ) \
{ \
if( m_ht->m_table[i] ) \
- return m_ht->m_table[i]; \
+ return static_cast<Node*>(m_ht->m_table[i]); \
} \
- return 0; \
+ return NULL; \
} \
\
void PlusPlus() \
{ \
- Node* next = m_node->m_next(); \
+ Node* next = m_node->next(); \
m_node = next ? next : GetNextNode(); \
} \
}; \
+ friend class Iterator; \
\
public: \
CLASSEXP iterator : public Iterator \
{ \
public: \
const_iterator() : Iterator() {} \
+ const_iterator(iterator i) : Iterator(i) {} \
const_iterator( Node* node, const Self* ht ) \
- : Iterator( node, (Self*)ht ) {} \
+ : Iterator(node, const_cast<Self*>(ht)) {} \
const_iterator& operator++() { PlusPlus();return *this; } \
const_iterator operator++(int) { const_iterator it=*this;PlusPlus();return it; } \
const_reference operator *() const { return m_node->m_value; } \
m_equals( k_eq ), \
m_getKey( k_ex ) \
{ \
- m_table = (Node**)AllocTable( m_tableBuckets ); \
+ m_table = (_wxHashTable_NodeBase**)AllocTable(m_tableBuckets); \
} \
\
CLASSNAME( const Self& ht ) \
- : m_table( 0 ), \
+ : m_table(NULL), \
m_tableBuckets( 0 ), \
m_items( ht.m_items ), \
m_hasher( ht.m_hasher ), \
\
const Self& operator=( const Self& ht ) \
{ \
- clear(); \
- m_hasher = ht.m_hasher; \
- m_equals = ht.m_equals; \
- m_getKey = ht.m_getKey; \
- m_items = ht.m_items; \
- HashCopy( ht ); \
+ if (&ht != this) \
+ { \
+ clear(); \
+ m_hasher = ht.m_hasher; \
+ m_equals = ht.m_equals; \
+ m_getKey = ht.m_getKey; \
+ m_items = ht.m_items; \
+ HashCopy( ht ); \
+ } \
return *this; \
} \
\
{ \
clear(); \
\
- free(m_table); \
+ FreeTable(m_table); \
} \
\
hasher hash_funct() { return m_hasher; } \
/* shrink it ( perhaps it should ) */ \
void clear() \
{ \
- DeleteNodes( m_tableBuckets, (_wxHashTable_NodeBase**)m_table, \
- DeleteNode ); \
+ DeleteNodes(m_tableBuckets, m_table, DeleteNode); \
m_items = 0; \
} \
\
size_type max_size() const { return size_type(-1); } \
bool empty() const { return size() == 0; } \
\
- const_iterator end() const { return const_iterator( 0, this ); } \
- iterator end() { return iterator( 0, this ); } \
+ const_iterator end() const { return const_iterator(NULL, this); } \
+ iterator end() { return iterator(NULL, this); } \
const_iterator begin() const \
- { return const_iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \
+ { return const_iterator(static_cast<Node*>(GetFirstNode(m_tableBuckets, m_table)), this); } \
iterator begin() \
- { return iterator( (Node*)GetFirstNode( m_tableBuckets, (_wxHashTable_NodeBase**)m_table ), this ); }; \
+ { return iterator(static_cast<Node*>(GetFirstNode(m_tableBuckets, m_table)), this); } \
\
size_type erase( const const_key_type& key ) \
{ \
- Node** node = GetNodePtr( key ); \
+ _wxHashTable_NodeBase** node = GetNodePtr(key); \
\
if( !node ) \
return 0; \
\
--m_items; \
- Node* temp = (*node)->m_next(); \
- delete *node; \
+ _wxHashTable_NodeBase* temp = (*node)->m_next; \
+ delete static_cast<Node*>(*node); \
(*node) = temp; \
if( SHOULD_SHRINK( m_tableBuckets, m_items ) ) \
ResizeTable( GetPreviousPrime( (unsigned long) m_tableBuckets ) - 1 ); \
{ \
const const_key_type& key = m_getKey( value ); \
size_t bucket = m_hasher( key ) % m_tableBuckets; \
- Node* node = m_table[bucket]; \
+ Node* node = static_cast<Node*>(m_table[bucket]); \
\
while( node ) \
{ \
created = false; \
return node; \
} \
- node = node->m_next(); \
+ node = node->next(); \
} \
created = true; \
return CreateNode( value, bucket); \
Node * CreateNode( const value_type& value, size_t bucket ) \
{\
Node* node = new Node( value ); \
- node->m_nxt = m_table[bucket]; \
+ node->m_next = m_table[bucket]; \
m_table[bucket] = node; \
\
/* must be after the node is inserted */ \
}\
\
/* returns NULL if not found */ \
- Node** GetNodePtr( const const_key_type& key ) const \
+ _wxHashTable_NodeBase** 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; \
+ _wxHashTable_NodeBase** node = &m_table[bucket]; \
\
while( *node ) \
{ \
- if( m_equals( m_getKey( (*node)->m_value ), key ) ) \
+ if (m_equals(m_getKey(static_cast<Node*>(*node)->m_value), key)) \
return node; \
- node = (Node**)&(*node)->m_nxt; \
+ node = &(*node)->m_next; \
} \
\
- 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 = static_cast<Node*>(m_table[bucket]); \
\
while( node ) \
{ \
if( m_equals( m_getKey( node->m_value ), key ) ) \
return node; \
- node = node->m_next(); \
+ node = node->next(); \
} \
\
- return 0; \
+ return NULL; \
} \
\
void ResizeTable( size_t newSize ) \
{ \
newSize = GetNextPrime( (unsigned long)newSize ); \
- Node** srcTable = m_table; \
+ _wxHashTable_NodeBase** srcTable = m_table; \
size_t srcBuckets = m_tableBuckets; \
- m_table = (Node**)AllocTable( newSize ); \
+ m_table = (_wxHashTable_NodeBase**)AllocTable( newSize ); \
m_tableBuckets = newSize; \
\
- CopyHashTable( (_wxHashTable_NodeBase**)srcTable, srcBuckets, \
- this, (_wxHashTable_NodeBase**)m_table, \
+ CopyHashTable( srcTable, srcBuckets, \
+ this, m_table, \
(BucketFromNode)GetBucketForNode,\
(ProcessNode)&DummyProcessNode ); \
- free(srcTable); \
+ FreeTable(srcTable); \
} \
\
/* this must be called _after_ m_table has been cleaned */ \
void HashCopy( const Self& ht ) \
{ \
ResizeTable( ht.size() ); \
- CopyHashTable( (_wxHashTable_NodeBase**)ht.m_table, ht.m_tableBuckets,\
+ CopyHashTable( ht.m_table, ht.m_tableBuckets, \
(_wxHashTableBase2*)this, \
- (_wxHashTable_NodeBase**)m_table, \
+ m_table, \
(BucketFromNode)GetBucketForNode, \
(ProcessNode)CopyNode ); \
} \
CLASSEXP CLASSNAME \
{ \
public: \
+ typedef KEY_T first_type; \
+ typedef VALUE_T second_type; \
typedef KEY_T t1; \
typedef VALUE_T t2; \
typedef const KEY_T const_t1; \
typedef const VALUE_T const_t2; \
\
- CLASSNAME( const const_t1& f, const const_t2& s ):first(t1(f)),second(t2(s)) {} \
+ CLASSNAME(const const_t1& f, const const_t2& s) \
+ : first(const_cast<t1&>(f)), second(const_cast<t2&>(s)) {} \
\
t1 first; \
t2 second; \
return float(items)/float(buckets) >= 0.85;
}
-#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#endif // various hash map implementations
// ----------------------------------------------------------------------------
// 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)
+#ifndef wxNEEDS_WX_HASH_MAP
// integer types
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;
+
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+ // 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 // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+
public:
wxIntegerHash() { }
size_t operator()( long x ) const { return longHash( 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 ); }
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+ size_t operator()( wxLongLong_t x ) const { return longlongHash(x); }
+ size_t operator()( wxULongLong_t x ) const { return longlongHash(x); }
+#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
};
-#else // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#else // wxNEEDS_WX_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; }
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+ wxULongLong_t operator()( wxLongLong_t x ) const { return static_cast<wxULongLong_t>(x); }
+ wxULongLong_t operator()( wxULongLong_t x ) const { return x; }
+#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
wxIntegerHash& operator=(const wxIntegerHash&) { return *this; }
};
-#endif // !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#endif // !wxNEEDS_WX_HASH_MAP/wxNEEDS_WX_HASH_MAP
class WXDLLIMPEXP_BASE wxIntegerEqual
{
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; }
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+ 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 // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
wxIntegerEqual& operator=(const wxIntegerEqual&) { return *this; }
};
public:
wxPointerHash() { }
-#if wxUSE_STL && defined(HAVE_STL_HASH_MAP)
- size_t operator()( const void* k ) const { return (size_t)k; }
-#else
+#ifdef wxNEEDS_WX_HASH_MAP
wxUIntPtr operator()( const void* k ) const { return wxPtrToUInt(k); }
+#else
+ size_t operator()( const void* k ) const { return (size_t)k; }
#endif
wxPointerHash& operator=(const wxPointerHash&) { return *this; }
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; }
};
wxStringEqual& operator=(const wxStringEqual&) { return *this; }
};
-#if !wxUSE_STL || !defined(HAVE_STL_HASH_MAP)
+#ifdef wxNEEDS_WX_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 ) \
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 ); } \
void erase( const iterator& it ) { erase( it->first ); } \
- void erase( const const_iterator& it ) { erase( it->first ); } \
\
/* 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)
+#endif // wxNEEDS_WX_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) \
#define WX_DECLARE_EXPORTED_HASH_MAP( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, CLASSNAME) \
WX_DECLARE_HASH_MAP_WITH_DECL( KEY_T, VALUE_T, HASH_T, KEY_EQ_T, \
- CLASSNAME, class WXDLLEXPORT )
+ CLASSNAME, class WXDLLIMPEXP_CORE )
#define WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
_WX_DECLARE_HASH_MAP( wxString, VALUE_T, wxStringHash, wxStringEqual, \
#define WX_DECLARE_EXPORTED_STRING_HASH_MAP( VALUE_T, CLASSNAME ) \
WX_DECLARE_STRING_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \
- class WXDLLEXPORT )
+ class WXDLLIMPEXP_CORE )
#define WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, DECL ) \
_WX_DECLARE_HASH_MAP( void*, VALUE_T, wxPointerHash, wxPointerEqual, \
#define WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP( VALUE_T, CLASSNAME ) \
WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL( VALUE_T, CLASSNAME, \
- class WXDLLEXPORT )
+ class WXDLLIMPEXP_CORE )
// delete all hash elements
//
WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual,
wxLongToLongHashMap, class WXDLLIMPEXP_BASE );
+WX_DECLARE_STRING_HASH_MAP_WITH_DECL( wxString, wxStringToStringHashMap,
+ class WXDLLIMPEXP_BASE );
-#endif // _WX_HASHMAP_H_
+WX_DECLARE_STRING_HASH_MAP_WITH_DECL( wxUIntPtr, wxStringToNumHashMap,
+ class WXDLLIMPEXP_BASE );
+
+#endif // _WX_HASHMAP_H_
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