public bool GetOperation(byte[] buffer, int bufferLength, ref int currentBufferPosition, bool mustMatchPosition, out int token)
{
int originalPosition = currentBufferPosition;
TrieEvaluator <Token> evaluator = new TrieEvaluator <Token>(this);
TrieEvaluationDriver <Token> driver = new TrieEvaluationDriver <Token>(evaluator);
if (mustMatchPosition)
{
bufferLength = Math.Min(bufferLength, currentBufferPosition + MaxLength);
}
TerminalLocation <Token> location = driver.Evaluate(buffer, bufferLength, true, 0, ref currentBufferPosition);
if (location != null && (!mustMatchPosition || (currentBufferPosition - location.Terminal.Length == originalPosition)))
{
token = location.Terminal.Index;
currentBufferPosition = location.Location + location.Terminal.End - location.Terminal.Start + 1;
return(true);
}
if (mustMatchPosition)
{
currentBufferPosition = originalPosition;
}
else
{
currentBufferPosition = bufferLength - MaxLength + 1;
}
token = -1;
return(false);
}
public bool GetOperation(byte[] buffer, int bufferLength, ref int currentBufferPosition, out int token)
{
int originalPosition = currentBufferPosition;
TrieEvaluator <Token> evaluator = new TrieEvaluator <Token>(this);
TrieEvaluationDriver <Token> driver = new TrieEvaluationDriver <Token>(evaluator);
TerminalLocation <Token> location = driver.Evaluate(buffer, bufferLength, true, 0, ref currentBufferPosition);
if (location != null && currentBufferPosition - location.Terminal.Length == originalPosition)
{
token = location.Terminal.Index;
currentBufferPosition = location.Location + location.Terminal.End - location.Terminal.Start + 1;
return(true);
}
currentBufferPosition = originalPosition;
token = -1;
return(false);
}