1 files changed, 142 insertions, 0 deletions
diff --git a/instr-to-kodkod/cfg-to-paths/src/ControlFlow.java b/instr-to-kodkod/cfg-to-paths/src/ControlFlow.java
new file mode 100644
index 0000000..93d20ba
--- /dev/null
+++ b/instr-to-kodkod/cfg-to-paths/src/ControlFlow.java
@@ -0,0 +1,142 @@
+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 */
+}