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 virtual TResult Visit(LogicExprNode node) => this.VisitChildren(node);
public override Expr Visit(LogicExprNode node) => this.EvaluateBinaryExpression(node);
