private GherkinFileScopeChange FullParse(ITextSnapshot textSnapshot, GherkinDialect gherkinDialect)
{
visualStudioTracer.Trace("Start full parsing", ParserTraceCategory);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
partialParseCount = 0;
var gherkinListener = new GherkinTextBufferParserListener(gherkinDialect, textSnapshot, projectScope.Classifications);
var scanner = new GherkinScanner(gherkinDialect, textSnapshot.GetText(), 0);
scanner.Scan(gherkinListener);
var gherkinFileScope = gherkinListener.GetResult();
var result = new GherkinFileScopeChange(
gherkinFileScope,
true, true,
gherkinFileScope.GetAllBlocks(),
Enumerable.Empty<IGherkinFileBlock>());
stopwatch.Stop();
TraceFinishParse(stopwatch, "full", result);
return result;
}
public Feature Parse(TextReader featureFileReader, string sourceFilePath)
{
var fileContent = featureFileReader.ReadToEnd();
var language = languageServices.GetLanguage(fileContent);
I18n languageService = languageServices.GetLanguageService(language);
var gherkinListener = new GherkinParserListener(sourceFilePath);
GherkinScanner scanner = new GherkinScanner(languageService, fileContent);
scanner.Scan(gherkinListener);
Feature feature = gherkinListener.GetResult();
if (gherkinListener.Errors.Count > 0)
throw new SpecFlowParserException(gherkinListener.Errors);
Debug.Assert(feature != null, "If there were no errors, the feature cannot be null");
feature.Language = language.LanguageForConversions.Name;
return feature;
}
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);
Debug.Assert(firstAffectedScenario != null);
int parseStartPosition = textSnapshot.GetLineFromLineNumber(firstAffectedScenario.GetStartLine()).Start;
string fileContent = textSnapshot.GetText(parseStartPosition, textSnapshot.Length - parseStartPosition);
var gherkinListener = new GherkinTextBufferPartialParserListener(
previousScope.GherkinDialect,
textSnapshot, projectScope.Classifications,
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 GherkinFileEditorInfo DoParsePartial(string fileContent, I18n languageService, int lineOffset, out ScenarioEditorInfo firstUnchangedScenario, ITextSnapshot textSnapshot, GherkinFileEditorInfo previousGherkinFileEditorInfo, int changeLastLine, int changeLineDelta)
{
GherkinScanner scanner = new GherkinScanner(languageService, fileContent, lineOffset);
var gherkinListener = new GherkinFileEditorParserListener(textSnapshot, classifications, previousGherkinFileEditorInfo, changeLastLine, changeLineDelta);
firstUnchangedScenario = null;
try
{
scanner.Scan(gherkinListener);
}
catch (PartialListeningDoneException partialListeningDoneException)
{
firstUnchangedScenario = partialListeningDoneException.FirstUnchangedScenario;
}
return gherkinListener.GetResult();
}