// Created: 12.09.97
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif
+// we cast the value to long from which we cast it to void * in IndexForInsert:
+// this can't work if the pointers are not big enough
+wxCOMPILE_TIME_ASSERT( sizeof(long) <= sizeof(void *),
+ wxArraySizeOfPtrLessSizeOfLong ); // < 32 symbols
+
// ============================================================================
// constants
// ============================================================================
return *this; \
} \
\
+/* allocate new buffer of the given size and move our data to it */ \
+bool name::Realloc(size_t nSize) \
+{ \
+ T *pNew = new T[nSize]; \
+ /* only grow if allocation succeeded */ \
+ if ( !pNew ) \
+ return false; \
+ \
+ m_nSize = nSize; \
+ /* copy data to new location */ \
+ memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \
+ delete [] m_pItems; \
+ m_pItems = pNew; \
+ \
+ return true; \
+} \
+ \
/* grow the array */ \
-void name::Grow() \
+void name::Grow(size_t nIncrement) \
{ \
/* only do it if no more place */ \
- if( m_nCount == m_nSize ) { \
+ if( (m_nCount == m_nSize) || ((m_nSize - m_nCount) < nIncrement) ) { \
if( m_nSize == 0 ) { \
- /* was empty, alloc some memory */ \
- m_pItems = new T[WX_ARRAY_DEFAULT_INITIAL_SIZE]; \
+ /* was empty, determine initial size */ \
+ size_t size = WX_ARRAY_DEFAULT_INITIAL_SIZE; \
+ if (size < nIncrement) size = nIncrement; \
+ /* allocate some memory */ \
+ m_pItems = new T[size]; \
/* only grow if allocation succeeded */ \
if ( m_pItems ) { \
- m_nSize = WX_ARRAY_DEFAULT_INITIAL_SIZE; \
+ m_nSize = size; \
} \
} \
else \
{ \
- /* add 50% but not too much */ \
- size_t nIncrement = m_nSize < WX_ARRAY_DEFAULT_INITIAL_SIZE \
- ? WX_ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1; \
- if ( nIncrement > ARRAY_MAXSIZE_INCREMENT ) \
- nIncrement = ARRAY_MAXSIZE_INCREMENT; \
- T *pNew = new T[m_nSize + nIncrement]; \
- /* only grow if allocation succeeded */ \
- if ( pNew ) { \
- m_nSize += nIncrement; \
- /* copy data to new location */ \
- memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \
- delete [] m_pItems; \
- m_pItems = pNew; \
- } \
+ /* add at least 50% but not too much */ \
+ size_t ndefIncrement = m_nSize < WX_ARRAY_DEFAULT_INITIAL_SIZE \
+ ? WX_ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1; \
+ if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT ) \
+ ndefIncrement = ARRAY_MAXSIZE_INCREMENT; \
+ if ( nIncrement < ndefIncrement ) \
+ nIncrement = ndefIncrement; \
+ Realloc(m_nSize + nIncrement); \
} \
} \
} \
\
+/* make sure that the array has at least count elements */ \
+void name::SetCount(size_t count, T defval) \
+{ \
+ if ( m_nSize < count ) \
+ { \
+ /* need to realloc memory: don't overallocate it here as if */ \
+ /* SetCount() is called, it probably means that the caller */ \
+ /* knows in advance how many elements there will be in the */ \
+ /* array and so it won't be necessary to realloc it later */ \
+ if ( !Realloc(count) ) \
+ { \
+ /* out of memory -- what can we do? */ \
+ return; \
+ } \
+ } \
+ \
+ /* add new elements if we extend the array */ \
+ while ( m_nCount < count ) \
+ { \
+ m_pItems[m_nCount++] = defval; \
+ } \
+} \
+ \
/* dtor */ \
name::~name() \
{ \
memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \
delete [] m_pItems; \
m_pItems = pNew; \
+ \
+ /* update the size of the new block */ \
+ m_nSize = m_nCount; \
} \
+ /* else: don't do anything, better keep old memory block! */ \
} \
} \
\
while ( lo < hi ) { \
i = (lo + hi)/2; \
\
- res = (*fnCompare)((const void *)lItem, (const void *)(m_pItems[i])); \
+ res = (*fnCompare)((const void *)(long)lItem, \
+ (const void *)(long)(m_pItems[i])); \
if ( res < 0 ) \
hi = i; \
else if ( res > 0 ) \
} \
\
/* add item at the end */ \
-void name::Add(T lItem) \
+void name::Add(T lItem, size_t nInsert) \
{ \
- Grow(); \
- m_pItems[m_nCount++] = lItem; \
+ if (nInsert == 0) \
+ return; \
+ Grow(nInsert); \
+ for (size_t i = 0; i < nInsert; i++) \
+ m_pItems[m_nCount++] = lItem; \
} \
\
/* add item assuming the array is sorted with fnCompare function */ \
} \
\
/* add item at the given position */ \
-void name::Insert(T lItem, size_t nIndex) \
+void name::Insert(T lItem, size_t nIndex, size_t nInsert) \
{ \
wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArray::Insert") ); \
+ wxCHECK_RET( m_nCount <= m_nCount + nInsert, \
+ wxT("array size overflow in wxArray::Insert") ); \
\
- Grow(); \
+ if (nInsert == 0) \
+ return; \
+ Grow(nInsert); \
\
- memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex], \
+ memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex], \
(m_nCount - nIndex)*sizeof(T)); \
- m_pItems[nIndex] = lItem; \
- m_nCount++; \
+ for (size_t i = 0; i < nInsert; i++) \
+ m_pItems[nIndex + i] = lItem; \
+ m_nCount += nInsert; \
} \
\
/* removes item from array (by index) */ \
-void name::RemoveAt(size_t nIndex) \
+void name::RemoveAt(size_t nIndex, size_t nRemove) \
{ \
- wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArray::RemoveAt") ); \
+ wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArray::RemoveAt") ); \
+ wxCHECK_RET( nIndex + nRemove <= m_nCount, \
+ wxT("removing too many elements in wxArray::RemoveAt") ); \
\
- memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1], \
- (m_nCount - nIndex - 1)*sizeof(T)); \
- m_nCount--; \
+ memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove], \
+ (m_nCount - nIndex - nRemove)*sizeof(T)); \
+ m_nCount -= nRemove; \
} \
\
/* removes item from array (by value) */ \
projects / wxWidgets.git / blobdiff