private GherkinFileScopeChange PartialParse(GherkinTextBufferChange change, IGherkinFileScope previousScope)
{
visualStudioTracer.Trace("Start incremental parsing", ParserTraceCategory);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
partialParseCount++;
var textSnapshot = change.ResultTextSnapshot;
IScenarioBlock firstAffectedScenario = GetFirstAffectedScenario(change, previousScope);
VisualStudioTracer.Assert(firstAffectedScenario != null, "first affected scenario is null");
int parseStartPosition = textSnapshot.GetLineFromLineNumber(firstAffectedScenario.GetStartLine()).Start;
string fileContent = textSnapshot.GetText(parseStartPosition, textSnapshot.Length - parseStartPosition);
var gherkinListener = new GherkinTextBufferPartialParserListener(
previousScope.GherkinDialect,
textSnapshot, projectScope,
previousScope,
change.EndLine, change.LineCountDelta);
var scanner = new GherkinScanner(previousScope.GherkinDialect, fileContent, firstAffectedScenario.GetStartLine());
IScenarioBlock firstUnchangedScenario = null;
try
{
scanner.Scan(gherkinListener);
}
catch (PartialListeningDoneException partialListeningDoneException)
{
firstUnchangedScenario = partialListeningDoneException.FirstUnchangedScenario;
}
var partialResult = gherkinListener.GetResult();
var result = MergePartialResult(previousScope, partialResult, firstAffectedScenario, firstUnchangedScenario, change.LineCountDelta);
stopwatch.Stop();
TraceFinishParse(stopwatch, "incremental", result);
return(result);
}
private GherkinFileScopeChange PartialParse(GherkinTextBufferChange change, IGherkinFileScope previousScope)
{
visualStudioTracer.Trace("Start incremental parsing", ParserTraceCategory);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
partialParseCount++;
var textSnapshot = change.ResultTextSnapshot;
IScenarioBlock firstAffectedScenario = GetFirstAffectedScenario(change, previousScope);
VisualStudioTracer.Assert(firstAffectedScenario != null, "first affected scenario is null");
int parseStartPosition = textSnapshot.GetLineFromLineNumber(firstAffectedScenario.GetStartLine()).Start;
string fileContent = textSnapshot.GetText(parseStartPosition, textSnapshot.Length - parseStartPosition);
var gherkinListener = new GherkinTextBufferPartialParserListener(
previousScope.GherkinDialect,
textSnapshot, projectScope,
previousScope,
change.EndLine, change.LineCountDelta);
var scanner = new GherkinScanner(previousScope.GherkinDialect, fileContent, firstAffectedScenario.GetStartLine());
IScenarioBlock firstUnchangedScenario = null;
try
{
scanner.Scan(gherkinListener);
}
catch (PartialListeningDoneException partialListeningDoneException)
{
firstUnchangedScenario = partialListeningDoneException.FirstUnchangedScenario;
}
var partialResult = gherkinListener.GetResult();
var result = MergePartialResult(previousScope, partialResult, firstAffectedScenario, firstUnchangedScenario, change.LineCountDelta);
stopwatch.Stop();
TraceFinishParse(stopwatch, "incremental", result);
return result;
}