public override Dictionary<String, Option> match(Dictionary<String, Option> variables,
TransactionalStreamReader input,
out List<Option> fields)
{
input.startTransaction();
Dictionary<String, Option> myEnv = variables;
fields = new List<Option>();
foreach (Rule rule in rules)
{
List<Option> newFields;
myEnv = rule.match(myEnv, input, out newFields);
if (myEnv == null)
break;
if (newFields != null)
fields.AddRange(newFields);
}
if (myEnv == null)
{
input.cancelTransaction();
if (failSilently)
return variables;
else
return null;
}
else
{
if (this.name != null)
myEnv[name] = new OptionArray(name, input.getTransactionData());
input.commitTransaction();
return myEnv;
}
}
public void cancelTransactionTest()
{
Stream stream = new MemoryStream();
TransactionalStreamReader target = new TransactionalStreamReader(stream);
// Przygotuj dane testowe
stream.WriteByte(9);
stream.WriteByte(20);
stream.WriteByte(31);
stream.WriteByte(42);
stream.Seek(0, SeekOrigin.Begin);
target.startTransaction();
Assert.AreEqual(target.ReadByte(), 9);
Assert.AreEqual(target.ReadByte(), 20);
target.cancelTransaction();
target.startTransaction();
Assert.AreEqual(target.ReadByte(), 9);
Assert.AreEqual(target.ReadByte(), 20);
Assert.AreEqual(target.ReadByte(), 31);
Assert.AreEqual(target.ReadByte(), 42);
target.cancelTransaction();
Assert.AreEqual(stream.ReadByte(), -1); // Cały strumien został zjedzony
}
public override bool match(TransactionalStreamReader s)
{
// First, read whatever is in the stream
int newValue = 0;
s.startTransaction();
for (int i = 0; i < Size; i++)
{
newValue |= s.ReadByte() << (8*i);
}
if (MinValue > newValue || newValue > MaxValue)
{
s.cancelTransaction();
return false;
}
if (myValue == null)
{
Value = newValue;
s.commitTransaction();
return true;
}
else // myValue != null
if (myValue == newValue)
{
s.commitTransaction();
return true;
}
else
{
s.cancelTransaction();
return false;
}
}
public override bool match(TransactionalStreamReader s)
{
// FIXME: wczytywanie vs. dopasowanie tablic
s.startTransaction();
foreach (Option o in OptionsArray)
if (!o.match(s))
{
s.cancelTransaction();
return false;
}
s.commitTransaction();
return true;
}
public Dictionary<string, Option> matchIncoming(Dictionary<string, Option> env,
TransactionalStreamReader transStream,
List<Message> excluded,
out List<Option> fields)
{
List<Message> oldExcluded = excludedSoFar;
excludedSoFar = excluded;
Dictionary<String, Option> nextEnv = null;
fields = new List<Option>();
foreach (Message msg in requestMsgs)
{
if (!excluded.Contains(msg))
{
List<Option> newFields;
Message oldCurrentMsg = currentMessage;
currentMessage = msg;
transStream.startTransaction();
nextEnv = msg.match(env, transStream, out newFields);
currentMessage = oldCurrentMsg;
if (nextEnv == null)
transStream.cancelTransaction();
else
{
if (newFields != null)
fields.AddRange(newFields);
transStream.commitTransaction();
break;
}
}
}
excludedSoFar = oldExcluded;
return nextEnv;
}