private void OnDocumentParseComplete(DocumentParseCompleteEventArgs args)
{
Debug.Assert(args != null, "Event arguments cannot be null");
EventHandler <DocumentParseCompleteEventArgs> handler = DocumentParseComplete;
if (handler != null)
{
handler(this, args);
}
#if DEBUG
RazorDebugHelpers.WriteDebugTree(FileName, args.GeneratorResults.Document, PartialParseResult.Rejected, args.SourceChange, this, args.TreeStructureChanged);
RazorDebugHelpers.WriteGeneratedCode(FileName, args.GeneratorResults.GeneratedCode);
#endif
}
/// <summary>
/// Determines if a change will cause a structural change to the document and if not, applies it to the existing tree.
/// If a structural change would occur, automatically starts a reparse
/// </summary>
/// <remarks>
/// NOTE: The initial incremental parsing check and actual incremental parsing (if possible) occurs
/// on the callers thread. However, if a full reparse is needed, this occurs on a background thread.
/// </remarks>
/// <param name="change">The change to apply to the parse tree</param>
/// <returns>A PartialParseResult value indicating the result of the incremental parse</returns>
public virtual PartialParseResult CheckForStructureChanges(TextChange change)
{
// Validate the change
if (change.NewBuffer == null)
{
throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture,
RazorResources.Structure_Member_CannotBeNull,
"Buffer",
"TextChange"), "change");
}
PartialParseResult result = PartialParseResult.Rejected;
// Lock the state objects
lock (_lock)
{
// If there isn't already a parse underway, try partial-parsing
if (CurrentParseTree != null && _outstandingParserTasks.Count == 0)
{
result = TryPartialParse(change);
}
// If partial parsing failed or there were outstanding parser tasks, start a full reparse
if (result.HasFlag(PartialParseResult.Rejected))
{
QueueFullReparse(change);
}
#if DEBUG
else
{
if (CurrentParseTree != null)
{
RazorDebugHelpers.WriteDebugTree(FileName, CurrentParseTree, result, change, this, false);
}
if (_currentCompileUnit != null)
{
RazorDebugHelpers.WriteGeneratedCode(FileName, _currentCompileUnit);
}
}
#endif
// Otherwise, remember if this was provisionally accepted for next partial parse
LastResultProvisional = result.HasFlag(PartialParseResult.Provisional);
}
VerifyFlagsAreValid(result);
return(result);
}
/// <summary>
/// Determines if a change will cause a structural change to the document and if not, applies it to the existing tree.
/// If a structural change would occur, automatically starts a reparse
/// </summary>
/// <remarks>
/// NOTE: The initial incremental parsing check and actual incremental parsing (if possible) occurs
/// on the callers thread. However, if a full reparse is needed, this occurs on a background thread.
/// </remarks>
/// <param name="change">The change to apply to the parse tree</param>
/// <returns>A PartialParseResult value indicating the result of the incremental parse</returns>
public virtual PartialParseResult CheckForStructureChanges(TextChange change)
{
// Validate the change
if (change.NewBuffer == null)
{
throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture,
RazorResources.Structure_Member_CannotBeNull,
"Buffer",
"TextChange"), "change");
}
// Acquire the sync lock (we need to be fast now, since we're on the UI thread)
PartialParseResult result = PartialParseResult.Rejected;
bool lockTaken = false;
try {
_syncLock.Enter(ref lockTaken);
if (lockTaken)
{
if (!_parseUnderway)
{
result = TryPartialParse(change);
}
// Provisional Acceptance means we accept it, but set a flag indicating that we should force
// a reparse if the next change is not accepted by the same span that accepted this change.
// Rejected or Accepted means we clear the LastResultProvisional flag
LastResultProvisional = result.HasFlag(PartialParseResult.Provisional);
if (result.HasFlag(PartialParseResult.Rejected))
{
_parseUnderway = true;
// Queue a reparse to occur on a _background_ thread
QueueFullReparse(change);
}
#if DEBUG
else
{
if (_currentParseTree != null)
{
RazorDebugHelpers.WriteDebugTree(_sourceFileName, _currentParseTree, result, change, this, false);
}
if (_currentCodeCompileUnit != null)
{
RazorDebugHelpers.WriteGeneratedCode(_sourceFileName, _currentCodeCompileUnit);
}
}
#endif
}
}
finally {
if (_syncLock.IsHeldByCurrentThread)
{
_syncLock.Exit();
}
}
VerifyFlagsAreValid(result);
return(result);
}