/// <summary>
/// Handles the actual parsing.
/// </summary>
/// <param name="work">The work item to parse.</param>
/// <returns>A new <see cref="ParserResult" />.</returns>
private ParserResult HandleParsing(ParserWorkItem work)
{
var errorListener = new TestingErrorListener();
var analyzer = new Analyzer();
var options = work.Options;
var trace = options.HasFlag(ParseOption.Trace);
if (trace)
{
options ^= ParseOption.Trace;
}
var parser = analyzer.BuildParserWithOptions(work.Grammar, work.Text, options);
GuiTraceListener parseTreeListener = null;
if (trace)
{
parseTreeListener = new GuiTraceListener(parser);
parser.AddParseListener(parseTreeListener);
}
parser.RemoveErrorListeners();
parser.AddErrorListener(errorListener);
analyzer.ExecuteParsing(parser, work.ParserRuleName);
return(new ParserResult(analyzer.SyntaxTokens, analyzer.ParserContext, work.ParserRuleName, errorListener.Errors, trace ? parseTreeListener.Events : new List <TraceEvent>()));
}
/// <inheritdoc />
public void Parse(GrammarReference grammar, string parserRuleName, string text, ParseOption options)
{
lock (_Padlock)
{
var nextRun = CalculateNextRunTime(_PreviousNodeQty, 50, 5, 1000);
var work = new ParserWorkItem(grammar, parserRuleName, text, options, nextRun);
QueuedWork.Enqueue(work);
_LastQueuedTime = DateTime.Now;
if (ParserTask.IsCompleted)
{
ParserTask = new Task(ParserWorkLoop);
}
if (ParserTask.Status != TaskStatus.Running)
{
ParserTask.Start();
}
}
}
