public GotoDefinitionHandler(
OmniSharpWorkspace workspace,
MetadataExternalSourceService metadataExternalSourceService)
: base(workspace)
{
_metadataExternalSourceService = metadataExternalSourceService ?? throw new ArgumentNullException(nameof(metadataExternalSourceService));
}
public ExternalSourceServiceFactory(MetadataExternalSourceService metadataExternalSourceService, DecompilationExternalSourceService decompilationExternalSourceService)
{
_metadataExternalSourceService = metadataExternalSourceService;
_decompilationExternalSourceService = decompilationExternalSourceService;
}
internal static async Task <IEnumerable <Alias> > GetAliasFromMetadataAsync(
OmniSharpWorkspace workspace,
string fileName,
int line,
int timeout,
MetadataExternalSourceService metadataExternalSourceService)
{
var document = workspace.GetDocument(fileName);
var lineIndex = line + MethodLineOffset;
int column;
if (document == null)
{
return(Enumerable.Empty <Alias>());
}
var semanticModel = await document.GetSemanticModelAsync();
var sourceText = await document.GetTextAsync();
var sourceLine = sourceText.Lines[lineIndex].ToString();
if (sourceLine.Contains("(Context"))
{
column = sourceLine.IndexOf("(Context", StringComparison.Ordinal);
}
else
{
lineIndex = line + PropertyLineOffset;
sourceLine = sourceText.Lines[lineIndex].ToString();
if (sourceLine.Contains("(Context"))
{
column = sourceLine.IndexOf("(Context", StringComparison.Ordinal);
}
else
{
return(Enumerable.Empty <Alias>());
}
}
if (column > 0 && sourceLine[column - 1] == '>')
{
column = sourceLine.LastIndexOf("<", column, StringComparison.Ordinal);
}
var position = sourceText.Lines.GetPosition(new LinePosition(lineIndex, column));
var symbol = await SymbolFinder.FindSymbolAtPositionAsync(semanticModel, position, workspace);
if (symbol == null || symbol is INamespaceSymbol)
{
return(Enumerable.Empty <Alias>());
}
if (symbol is IMethodSymbol method)
{
symbol = method.PartialImplementationPart ?? symbol;
}
var result = new List <Alias>();
foreach (var location in symbol.Locations)
{
if (!location.IsInMetadata)
{
continue;
}
var cancellationSource = new CancellationTokenSource(TimeSpan.FromMilliseconds(timeout));
var(metadataDocument, _) = await metadataExternalSourceService.GetAndAddExternalSymbolDocument(document.Project, symbol, cancellationSource.Token);
if (metadataDocument == null)
{
continue;
}
cancellationSource = new CancellationTokenSource(TimeSpan.FromMilliseconds(timeout));
var metadataLocation = await metadataExternalSourceService.GetExternalSymbolLocation(symbol, metadataDocument, cancellationSource.Token);
var lineSpan = metadataLocation.GetMappedLineSpan();
result.Add(new Alias
{
Document = document,
MetadataDocument = metadataDocument,
Symbol = symbol,
Location = location,
LineSpan = lineSpan
});
}
return(result);
}