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import java.io.*;
public class ControlFlow
{
public static boolean load_file
(
final String filename
)
throws FileNotFoundException
{
final QuickParser qp;
String[] input;
boolean success;
qp = new QuickParser(filename);
for (;;)
{
try
{
input = qp.parse_line();
if (input == null)
{
qp.finalize();
return false;
}
else if (input.length == 0)
{
qp.finalize();
break;
}
}
catch (final IOException e)
{
System.err.println
(
"[E] IO error while parsing file \""
+ filename
+ "\":"
/* FIXME: can be null */
+ e.getMessage()
);
return false;
}
if (input[0].equals("add_element"))
{
success = handle_add_element(input);
}
else if (input[0].equals("node_connect"))
{
success = handle_add_connect_to(input);
}
else if (input[0].equals("is_terminal"))
{
success = handle_is_terminal(input);
}
else
{
continue;
}
if (!success)
{
System.err.println
(
"[E] An erroneous instruction was found in file \""
+ filename
+ "\"."
);
try
{
qp.finalize();
}
catch (final Exception e)
{
System.err.println("[E] Additionally:");
e.printStackTrace();
}
return false;
}
}
return true;
}
private static boolean handle_add_element
(
final String[] input
)
{
if (input.length != 3)
{
return false;
}
if (!input[1].equals("node"))
{
return true;
}
Node.handle_add_node(input[2]);
return true;
}
private static boolean handle_is_terminal
(
final String[] input
)
{
if (input.length != 2)
{
return false;
}
Node.handle_is_terminal(input[1]);
return true;
}
private static boolean handle_add_connect_to
(
final String[] input
)
{
if ((input.length != 3))
{
return false;
}
return Node.handle_connect_to(input[1], input[2]);
}
private ControlFlow () {} /* Utility Class */
}
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