CValue* SCA_ILogicBrick::Calc(VALUE_OPERATOR op, CValue *val)
{
CValue* temp = new CBoolValue(false,"");
CValue* result = temp->Calc(op,val);
temp->Release();
return result;
}
CValue * COperator1Expr::Calculate()
/*
pre:
ret: a new object containing the result of applying the operator m_op to the
value of m_lhs
*/
{
CValue *ret;
CValue *temp = m_lhs->Calculate();
CValue* empty = new CEmptyValue();
ret = empty->Calc(m_op, temp);
empty->Release();
temp->Release();
return ret;
}
CValue* COperator2Expr::Calculate()
/*
pre:
ret: a new object containing the result of applying operator m_op to m_lhs
and m_rhs
*/
{
bool leftmodified,rightmodified;
leftmodified = m_lhs->NeedsRecalculated();
rightmodified = m_rhs->NeedsRecalculated();
// if no modifications on both left and right subtree, and result is already calculated
// then just return cached result...
if (!leftmodified && !rightmodified && (m_cached_calculate))
{
// not modified, just return m_cached_calculate
} else {
// if not yet calculated, or modified...
if (m_cached_calculate) {
m_cached_calculate->Release();
m_cached_calculate=NULL;
}
CValue* ffleft = m_lhs->Calculate();
CValue* ffright = m_rhs->Calculate();
ffleft->SetOwnerExpression(this);//->m_pOwnerExpression=this;
ffright->SetOwnerExpression(this);//->m_pOwnerExpression=this;
m_cached_calculate = ffleft->Calc(m_op,ffright);
//if (m_cached_calculate)
// m_cached_calculate->Action(CValue::SETOWNEREXPR,&CVoidValue(this,false,CValue::STACKVALUE));
ffleft->Release();
ffright->Release();
}
return m_cached_calculate->AddRef();
}