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// Expression.cpp: implementation of the CExpression class.
/*
* Copyright (c) 1996-2000 Erwin Coumans <coockie@acm.org>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Erwin Coumans makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*/
#include "Expression.h"
#include "ErrorValue.h"
//#include "FactoryManager.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CExpression::CExpression()// : m_cached_calculate(NULL)
{
m_refcount = 1;
#ifdef _DEBUG
//gRefCountExpr++;
#endif
}
CExpression::~CExpression()
{
assert (m_refcount == 0);
}
// destuctor for CBrokenLinkInfo
CBrokenLinkInfo::~CBrokenLinkInfo()
{
if (m_pExpr && !m_bRestored)
m_pExpr->Release();
}
void CBrokenLinkInfo::RestoreLink()
{
assertd(m_pExpr);
if (m_pExpr)
{
if (!m_bRestored){
m_bRestored=true;
}
if (*m_pmemExpr)
{
(*m_pmemExpr)->Release();
}
*m_pmemExpr = m_pExpr;
// m_pExpr=NULL;
}
}
void CBrokenLinkInfo::BreakLink()
{
m_bRestored=false;
m_pExpr->AddRef();
}
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