'Bounded Retransmission Protocol' Blob

1 files changed, 60 insertions, 0 deletions

diff --git a/assignments/assignment2/Bounded Retransmission Protocol Tester/Source/basiclearner/CacheInconsistencyException.java b/assignments/assignment2/Bounded Retransmission Protocol Tester/Source/basiclearner/CacheInconsistencyException.java
new file mode 100644
index 0000000..67c2e73
--- /dev/null
+++ b/assignments/assignment2/Bounded Retransmission Protocol Tester/Source/basiclearner/CacheInconsistencyException.java
@@ -0,0 +1,60 @@
+package basiclearner;
+
+import net.automatalib.words.Word;
+
+/**
+ * Contains the full input for which non-determinism was observed, as well as the full new output
+ * and the (possibly shorter) old output with which it disagrees
+ * 
+ * @author Ramon Janssen
+ */
+public class CacheInconsistencyException extends RuntimeException {
+	private final Word oldOutput, newOutput, input;
+	
+	public CacheInconsistencyException(Word input, Word oldOutput, Word newOutput) {
+		this.input = input;
+		this.oldOutput = oldOutput;
+		this.newOutput = newOutput;
+	}
+	
+	public CacheInconsistencyException(String message, Word input, Word oldOutput, Word newOutput) {
+		super(message);
+		this.input = input;
+		this.oldOutput = oldOutput;
+		this.newOutput = newOutput;
+	}
+	
+
+	/**
+	 * The shortest cached output word which does not correspond with the new output
+	 * @return
+	 */
+	public Word getOldOutput() {
+		return this.oldOutput;
+	}
+	
+	/**
+	 * The full new output word
+	 * @return
+	 */
+	public Word getNewOutput() {
+		return this.newOutput;
+	}
+
+	/**
+	 * The shortest sublist of the input word which still shows non-determinism
+	 * @return
+	 */
+	public Word getShortestInconsistentInput() {
+	    int indexOfInconsistency = 0;
+	    while (oldOutput.getSymbol(indexOfInconsistency).equals(newOutput.getSymbol(indexOfInconsistency))) {
+	        indexOfInconsistency ++;
+	    }
+	    return this.input.subWord(0, indexOfInconsistency);
+	}
+	
+	@Override
+	public String toString() {
+		return "Non-determinism detected\nfull input:\n" + this.input + "\nfull new output:\n" + this.newOutput + "\nold output:\n" + this.oldOutput;
+	}
+}