//check lhs and rhs are the same and assign node type based on lhs or rhs type
public void VisitNode(ArithmeticExpression node)
{
AbstractNode expr1 = node.Child;
AbstractNode expr2 = expr1.Sib;
expr1.Accept(this);
expr2.Accept(this);
if (Assignable(expr1.TypeRef, expr2.TypeRef))
{
node.TypeRef = expr1.TypeRef;
}
else
{
Console.WriteLine("Right hand side expression is not assignable to left hand side");
node.TypeRef = new ErrorTypeDescriptor();
}
}
public void VisitNode(ArithmeticExpression node)
{
AbstractNode expr1 = node.Child;
AbstractNode expr2 = expr1.Sib;
VisitChildren(node);
using (FileStream fs = File.Open(GlobalVar.PATH, FileMode.Append))
{
using (StreamWriter sw = new StreamWriter(fs))
{
switch (node.GetType().ToString())
{
case ("ASTBuilder.Plus"): sw.WriteLine("add"); break;
case ("ASTBuilder.Minus"): sw.WriteLine("sub"); break;
case ("ASTBuilder.Multiply"): sw.WriteLine("mul"); break;
case ("ASTBuilder.Division"): sw.WriteLine("div"); break;
}
}
}
}