object IVisitor <object> .visit(ReadNode node)
{
Node child = node.getLeft();
Console.Write(">>> ");
string value = Console.ReadLine();
if (child.type == Token.INT)
{
try {
int value_i = int.Parse(value);
SymbolTable.assign(child.value, value_i.ToString());
}
catch {
new RuntimeError(child, "Runtime Error: Could not parse interger from the input.");
}
}
else
{
SymbolTable.assign(child.value, value);
}
return(null);
}
object IVisitor <object> .visit(ReadNode node)
{
node.getLeft().accept(this);
return(null);
}