public override async Task <CommandResult> ExecuteAsync(ProjectOrSolution projectOrSolution, CancellationToken cancellationToken = default)
{
AssemblyResolver.Register();
ImmutableArray <UnusedSymbolInfo> allUnusedSymbols;
if (projectOrSolution.IsProject)
{
Project project = projectOrSolution.AsProject();
allUnusedSymbols = await AnalyzeProject(project, cancellationToken);
}
else
{
Solution solution = projectOrSolution.AsSolution();
ImmutableArray <UnusedSymbolInfo> .Builder unusedSymbols = null;
foreach (Project project in FilterProjects(solution, Options, s => s
.GetProjectDependencyGraph()
.GetTopologicallySortedProjects(cancellationToken)
.ToImmutableArray()))
{
cancellationToken.ThrowIfCancellationRequested();
ImmutableArray <UnusedSymbolInfo> unusedSymbols2 = await AnalyzeProject(project, cancellationToken);
if (unusedSymbols2.Any())
{
(unusedSymbols ?? (unusedSymbols = ImmutableArray.CreateBuilder <UnusedSymbolInfo>())).AddRange(unusedSymbols2);
}
}
allUnusedSymbols = unusedSymbols?.ToImmutableArray() ?? ImmutableArray <UnusedSymbolInfo> .Empty;
}
if (allUnusedSymbols.Any())
{
WriteLine(Verbosity.Normal);
Dictionary <UnusedSymbolKind, int> countByKind = allUnusedSymbols
.GroupBy(f => UnusedSymbolFinder.GetUnusedSymbolKind(f.Symbol))
.OrderByDescending(f => f.Count())
.ThenBy(f => f.Key)
.ToDictionary(f => f.Key, f => f.Count());
int maxCountLength = countByKind.Sum(f => f.Value.ToString().Length);
foreach (KeyValuePair <UnusedSymbolKind, int> kvp in countByKind)
{
WriteLine($"{kvp.Value.ToString().PadLeft(maxCountLength)} {kvp.Key.ToString().ToLowerInvariant()} symbols", Verbosity.Normal);
}
}
WriteLine(Verbosity.Minimal);
WriteLine($"{allUnusedSymbols.Length} unused {((allUnusedSymbols.Length == 1) ? "symbol" : "symbols")} found", ConsoleColor.Green, Verbosity.Minimal);
WriteLine(Verbosity.Minimal);
return(CommandResult.Success);
}
private async Task <ImmutableArray <UnusedSymbolInfo> > AnalyzeProject(Project project, CancellationToken cancellationToken)
{
WriteLine($"Analyze '{project.Name}'", Verbosity.Minimal);
Compilation compilation = await project.GetCompilationAsync(cancellationToken);
INamedTypeSymbol generatedCodeAttribute = compilation.GetTypeByMetadataName("System.CodeDom.Compiler.GeneratedCodeAttribute");
ImmutableHashSet <ISymbol> ignoredSymbols = Options.IgnoredSymbols
.Select(f => DocumentationCommentId.GetFirstSymbolForDeclarationId(f, compilation))
.Where(f => f != null)
.ToImmutableHashSet();
return(await UnusedSymbolFinder.FindUnusedSymbolsAsync(project, compilation, Predicate, ignoredSymbols, cancellationToken : cancellationToken).ConfigureAwait(false));
bool Predicate(ISymbol symbol)
{
return((UnusedSymbolKinds & GetUnusedSymbolKinds(symbol)) != 0 &&
IsVisible(symbol) &&
(!Options.IgnoreObsolete ||
!symbol.HasAttribute(MetadataNames.System_ObsoleteAttribute)) &&
(Options.IncludeGeneratedCode ||
!GeneratedCodeUtility.IsGeneratedCode(symbol, generatedCodeAttribute, MefWorkspaceServices.Default.GetService <ISyntaxFactsService>(project.Language).IsComment, cancellationToken)));
}
}