/* throws Exception */
// Relop ---
// int op;
// Exp e1, e2;
public AstType visit(AstRelop n)
{
AstType t1 = n.e1.accept(this);
AstType t2 = n.e2.accept(this);
if (n.op == AstRelop.OP.EQ || n.op == AstRelop.OP.NE)
{
if (compatible(t1,t2) || compatible(t2,t1))
return BoolType;
}
else if (isIntType(t1) && isIntType(t2))
{
return BoolType;
}
throw new TypeException("Incorrect operand types in Relop: " + t1 + n.opName(n.op) + t2);
}