NT4/private/ole32/com/inc/array_id.h
2020-09-30 17:12:29 +02:00

80 lines
2.2 KiB
C++

////////////////////////////////////////////////////////////////////////////
class FAR CIDArray
{
public:
// Construction
CIDArray() : m_afv(sizeof(IDENTRY)) { }
~CIDArray() { }
// Attributes
int GetSize() const
{ return m_afv.GetSize(); }
int GetUpperBound() const
{ return m_afv.GetSize()-1; }
BOOL SetSize(int nNewSize, int nGrowBy = -1)
{ return m_afv.SetSize(nNewSize, nGrowBy); }
int GetSizeValue() const
{ return m_afv.GetSizeValue(); }
// Operations
// Clean up
void FreeExtra()
{ m_afv.FreeExtra(); }
void RemoveAll()
{ m_afv.SetSize(0); }
// return pointer to element; index must be in range
IDENTRY GetAt(int nIndex) const
{ return *(IDENTRY FAR*)m_afv.GetAt(nIndex); }
IDENTRY FAR& ElementAt(int nIndex)
{ return (IDENTRY FAR&)*(IDENTRY FAR*)m_afv.GetAt(nIndex); }
// overloaded operator helpers
IDENTRY operator[](int nIndex) const
{ return GetAt(nIndex); }
IDENTRY FAR& operator[](int nIndex)
{ return ElementAt(nIndex); }
// get address of first element efficiently
operator IDENTRY *() { return (IDENTRY FAR*)m_afv.GetAt(0); }
// set element; index must be in range
void SetAt(int nIndex, IDENTRY& value)
{ m_afv.SetAt(nIndex, (LPVOID)&value); }
// find element given part of one; offset is offset into value; returns
// -1 if element not found; use IndexOf(NULL, cb, offset) to find zeros;
// will be optimized for appropriate value size and param combinations
int IndexOf(LPVOID pData, UINT cbData, UINT offset)
{ return m_afv.IndexOf(pData, cbData, offset); }
// set/add element; Potentially growing the array; return FALSE/-1 if
// not possible (due to OOM)
BOOL SetAtGrow(int nIndex, IDENTRY& value)
{ return m_afv.SetAtGrow(nIndex, (LPVOID)&value); }
int Add(IDENTRY& value)
{ int nIndex = GetSize();
return SetAtGrow(nIndex, value) ? nIndex : -1;
}
// Operations that move elements around
BOOL InsertAt(int nIndex, IDENTRY& value, int nCount = 1)
{ return m_afv.InsertAt(nIndex, (LPVOID)&value, nCount); }
void RemoveAt(int nIndex, int nCount = 1)
{ m_afv.RemoveAt(nIndex, nCount); }
void AssertValid() const
{ m_afv.AssertValid(); }
// Implementation
private:
CArrayFValue m_afv;
};