private void LoadInputWindow(InputWindow newWindow)
{
this.InputWindow = newWindow;
this.PosWindowStart = newWindow.PosWindowStart;
this.PosWindowEnd = newWindow.PosWindowEnd;
this.m_outputWriter.AddWindow(newWindow);
}
private void QueueMoreWindows()
{
for (;;)
{
lock (this.m_inputWindowQueue) {
if (CntWindowsToQueue == this.m_inputWindowQueue.Count)
{
return;
}
}
int cntCharsRead = this.m_readBlockDelegate.EndInvoke(this.m_readBlockResult);
bool isLastWindow = false;
if (cntCharsRead < WindowSize)
{
isLastWindow = true;
}
int posNewWindowStart;
if (this.m_lastWindowRead != null)
{
this.m_windowBuilder.Length = 0;
this.m_windowBuilder.Append(this.m_lastWindowRead.Window, this.m_lastWindowRead.Window.Length - CntSafetyMargin, CntSafetyMargin);
posNewWindowStart = this.m_lastWindowRead.PosWindowEnd + 1 - (CntSafetyMargin);
}
else
{
posNewWindowStart = 0;
}
this.m_idxBufferEnd += cntCharsRead;
InputWindow newWindow = this.BuildNewWindow(posNewWindowStart, isLastWindow);
lock (this.m_inputWindowQueue) {
this.m_hasReadLastWindow = isLastWindow;
this.m_inputWindowQueue.Enqueue(newWindow);
this.m_windowIsReady.Set();
}
this.m_lastWindowRead = newWindow;
if (isLastWindow)
{
return;
}
if (this.m_buffer.Length < this.m_idxBufferEnd + WindowSize + 4)
{
Array.Resize(ref this.m_buffer, this.m_idxBufferEnd + WindowSize + 4);
}
this.m_readBlockResult = this.m_readBlockDelegate.BeginInvoke(this.m_buffer, this.m_idxBufferEnd + 1, WindowSize, null, null);
}
}
private void GetNextLineEnd(InputWindow window, out int idxNextLineEnd, out int posNextLineEnd)
{
idxNextLineEnd = Array.BinarySearch(window.IdxLineEnds, this.m_posCurrent);
if (idxNextLineEnd < 0)
{
idxNextLineEnd = ~idxNextLineEnd;
}
if (window.IdxLineEnds.Length <= idxNextLineEnd)
{
posNextLineEnd = int.MaxValue;
return;
}
else
{
posNextLineEnd = window.IdxLineEnds[idxNextLineEnd];
}
}
private void LoadInputWindow(InputWindow newWindow)
{
this.InputWindow = newWindow;
this.PosWindowStart = newWindow.PosWindowStart;
this.PosWindowEnd = newWindow.PosWindowEnd;
this.m_outputWriter.AddWindow(newWindow);
}
internal void AddWindow(InputWindow newWindow)
{
lock (this.m_windows) {
this.m_windows.Enqueue(newWindow);
}
}
private void GetNextLineEnd(InputWindow window, out int idxNextLineEnd, out int posNextLineEnd)
{
idxNextLineEnd = Array.BinarySearch(window.IdxLineEnds, this.m_posCurrent);
if (idxNextLineEnd < 0) {
idxNextLineEnd = ~idxNextLineEnd;
}
if (window.IdxLineEnds.Length <= idxNextLineEnd) {
posNextLineEnd = int.MaxValue;
return;
} else {
posNextLineEnd = window.IdxLineEnds[idxNextLineEnd];
}
}
internal void AddWindow(InputWindow newWindow)
{
lock (this.m_windows) {
this.m_windows.Enqueue(newWindow);
}
}
private void AdvanceWindow()
{
bool isDone = false;
InputWindow nextWindow = null;
lock (this.m_inputWindowQueue) {
if (0 < this.m_inputWindowQueue.Count)
{
nextWindow = this.m_inputWindowQueue.Dequeue();
isDone = true;
}
else
{
if (this.m_hasReadLastWindow)
{
string msg = "Abnormal condition. We have finished reading input (m_hasReadLastWindow is true), and yet "
+ "there are no windows available when AdvanceWindow was called. This is a bug.";
throw new AssertionViolationException(msg);
}
}
this.m_windowIsReady.Reset();
if (this.m_queueMoreWindowsResult != null && this.m_queueMoreWindowsResult.IsCompleted)
{
this.m_queueMoreWindows.EndInvoke(this.m_queueMoreWindowsResult);
if (this.m_hasReadLastWindow)
{
this.m_queueMoreWindowsResult = null;
}
else
{
this.m_queueMoreWindowsResult = this.m_queueMoreWindows.BeginInvoke(null, null);
}
}
}
if (!isDone)
{
WaitHandle.WaitAny(new WaitHandle[] { this.m_windowIsReady, this.m_queueMoreWindowsResult.AsyncWaitHandle });
lock (this.m_inputWindowQueue) {
// this can never happen, because whenever windowIsready OR queueMoreWindowsResult are signaled, it means
// that we have at least 1 window available (windowIsReady signaled) or CntWindowsToQueue available (result signaled)
if (0 == this.m_inputWindowQueue.Count)
{
if (this.m_queueMoreWindowsResult.IsCompleted)
{
// there was probably an exception inside queueMoreWindows. Let it bubble up
this.m_queueMoreWindows.EndInvoke(this.m_queueMoreWindowsResult);
}
string msg = StringExtensions.Fi("SlidingWindowReader has encountered an abnormal condition. The QueueMoreWindows() method "
+ "has returned without an exception, but no windows have been queued.");
throw new AssertionViolationException(msg);
}
nextWindow = this.m_inputWindowQueue.Dequeue();
}
}
this.m_currentWindow = nextWindow;
if (this.OnNewInputWindow != null)
{
this.OnNewInputWindow(nextWindow);
}
}
public SlidingWindowReader(string s)
{
ArgumentValidator.ThrowIfNull(s, "s");
this.m_windowBuilder = new StringBuilder(s.Length + 2);
this.m_lineEnds = new List<int>(s.Length / 40);
this.m_buffer = new char[s.Length + 1];
s.CopyTo(0, this.m_buffer, 0, s.Length);
this.m_idxBufferEnd = s.Length-1;
this.m_currentWindow = this.BuildNewWindow(0, true);
}
private void QueueMoreWindows()
{
for (;;) {
lock (this.m_inputWindowQueue) {
if (CntWindowsToQueue == this.m_inputWindowQueue.Count) {
return;
}
}
int cntCharsRead = this.m_readBlockDelegate.EndInvoke(this.m_readBlockResult);
bool isLastWindow = false;
if (cntCharsRead < WindowSize) {
isLastWindow = true;
}
int posNewWindowStart;
if (this.m_lastWindowRead != null) {
this.m_windowBuilder.Length = 0;
this.m_windowBuilder.Append(this.m_lastWindowRead.Window, this.m_lastWindowRead.Window.Length - CntSafetyMargin, CntSafetyMargin);
posNewWindowStart = this.m_lastWindowRead.PosWindowEnd + 1 - (CntSafetyMargin);
} else {
posNewWindowStart = 0;
}
this.m_idxBufferEnd += cntCharsRead;
InputWindow newWindow = this.BuildNewWindow(posNewWindowStart, isLastWindow);
lock (this.m_inputWindowQueue) {
this.m_hasReadLastWindow = isLastWindow;
this.m_inputWindowQueue.Enqueue(newWindow);
this.m_windowIsReady.Set();
}
this.m_lastWindowRead = newWindow;
if (isLastWindow) {
return;
}
if (this.m_buffer.Length < this.m_idxBufferEnd + WindowSize + 4) {
Array.Resize(ref this.m_buffer, this.m_idxBufferEnd + WindowSize + 4);
}
this.m_readBlockResult = this.m_readBlockDelegate.BeginInvoke(this.m_buffer, this.m_idxBufferEnd + 1, WindowSize, null, null);
}
}
private void AdvanceWindow()
{
bool isDone = false;
InputWindow nextWindow = null;
lock (this.m_inputWindowQueue) {
if (0 < this.m_inputWindowQueue.Count) {
nextWindow = this.m_inputWindowQueue.Dequeue();
isDone = true;
} else {
if (this.m_hasReadLastWindow) {
string msg = "Abnormal condition. We have finished reading input (m_hasReadLastWindow is true), and yet "
+ "there are no windows available when AdvanceWindow was called. This is a bug.";
throw new AssertionViolationException(msg);
}
}
this.m_windowIsReady.Reset();
if (this.m_queueMoreWindowsResult != null && this.m_queueMoreWindowsResult.IsCompleted) {
this.m_queueMoreWindows.EndInvoke(this.m_queueMoreWindowsResult);
if (this.m_hasReadLastWindow) {
this.m_queueMoreWindowsResult = null;
} else {
this.m_queueMoreWindowsResult = this.m_queueMoreWindows.BeginInvoke(null, null);
}
}
}
if (!isDone) {
WaitHandle.WaitAny(new WaitHandle[] {this.m_windowIsReady, this.m_queueMoreWindowsResult.AsyncWaitHandle});
lock (this.m_inputWindowQueue) {
// this can never happen, because whenever windowIsready OR queueMoreWindowsResult are signaled, it means
// that we have at least 1 window available (windowIsReady signaled) or CntWindowsToQueue available (result signaled)
if (0 == this.m_inputWindowQueue.Count) {
if (this.m_queueMoreWindowsResult.IsCompleted) {
// there was probably an exception inside queueMoreWindows. Let it bubble up
this.m_queueMoreWindows.EndInvoke(this.m_queueMoreWindowsResult);
}
string msg = StringExtensions.Fi("SlidingWindowReader has encountered an abnormal condition. The QueueMoreWindows() method "
+ "has returned without an exception, but no windows have been queued.");
throw new AssertionViolationException(msg);
}
nextWindow = this.m_inputWindowQueue.Dequeue();
}
}
this.m_currentWindow = nextWindow;
if (this.OnNewInputWindow != null) {
this.OnNewInputWindow(nextWindow);
}
}
