private ThreeAddressValueType GenVariable(LogicExprNode expr)
{
if (expr is BooleanNode)
{
return(new ThreeAddressLogicValue((expr as BooleanNode).Val));
}
if (expr is LogicIdNode)
{
return(new ThreeAddressStringValue((expr as LogicIdNode).Name.Name));
}
if (expr is LogicOpNode)
{
LogicOpNode op = expr as LogicOpNode;
string res = GenTempVariable();
ThreeAddressValueType arg1 = GenVariable(op.Left);
ThreeAddressValueType arg2 = GenVariable(op.Right);
ThreeOperator p = ThreeCode.ParseOperator(op.Operation);
AddCode(new ThreeCode(res, p, arg1, arg2));
return(new ThreeAddressStringValue(res));
}
if (expr is LogicNotNode)
{
LogicNotNode lnot = expr as LogicNotNode;
string res = GenTempVariable();
ThreeAddressValueType arg1 = GenVariable(lnot.LogExpr);
AddCode(new ThreeCode(res, ThreeOperator.Logic_not, arg1));
return(new ThreeAddressStringValue(res));
}
throw new Exception("UNKNOW VALUE. Send autors of ThreeAddressCode");
}
public override string GenCode()
{
var tmp2 = new EqualNode(left, right);
tmp2.linenumber = linenumber;
Node tmp = new LogicNotNode(tmp2);
tmp.linenumber = linenumber;
tmp.GenCode();
return(null);
}
public override void VisitLogicNotNode(LogicNotNode lnot)
{
if (lnot == null)
{
return;
}
Node parent = st.Pop();
st.Push(parent);
lnot.Parent = parent;
st.Push(lnot);
base.VisitLogicNotNode(lnot);
st.Pop();
}
public override void VisitLogicNotNode(LogicNotNode v)
{
Text += "!";
v.LogExpr.Visit(this);
}
public override void VisitLogicNotNode(LogicNotNode lnot)
{
lnot.LogExpr.Visit(this);
}
public virtual void VisitLogicNotNode(LogicNotNode lnot)
{
}
public override void VisitLogicNotNode(LogicNotNode lnot)
{
++Current;
base.VisitLogicNotNode(lnot);
}
