bool CDatum::CreateStringFromHandoff (CString &sString, CDatum *retDatum)
// CreateStringFromHandoff
//
// Creates a string by taking a handoff from a string
{
if (sString.IsLiteral())
{
if (sString.IsEmpty())
retDatum->m_dwData = 0;
else
retDatum->m_dwData = (DWORD_PTR)(LPSTR)sString;
}
else
{
// Take ownership of the data
LPSTR pString = sString.Handoff();
// Track it with our allocator (but only if not NULL).
// (If pString is NULL then this is represented as Nil).
if (pString)
g_StringAlloc.New(pString);
// Store the pointer
retDatum->m_dwData = (DWORD_PTR)pString;
}
// Done
return true;
}
CDatum::CDatum (const CString &sString)
// CDatum constructor
{
// If this is a literal string, then we can just
// take the value, because it doesn't need to be freed.
// NOTE: We can only do this if the literal pointer is
// DWORD aligned.
if (sString.IsLiteral())
{
if (sString.IsEmpty())
{
m_dwData = 0;
return;
}
else
{
m_dwData = (DWORD_PTR)(LPSTR)sString;
if ((m_dwData & AEON_TYPE_MASK) == AEON_TYPE_STRING)
return;
#ifdef DEBUG
else
g_iUnalignedLiteralCount++;
#endif
}
}
// Get a copy of the naked LPSTR out of the string
CString sNewString(sString);
LPSTR pString = sNewString.Handoff();
// Track it with our allocator (but only if not NULL).
// (If pString is NULL then this is represented as Nil).
if (pString)
g_StringAlloc.New(pString);
// Store the pointer
m_dwData = (DWORD_PTR)pString;
// No need to mark the type (because TYPE_STRING is 0)
ASSERT(AEON_TYPE_STRING == 0x00);
}
