public void Migrate(BreakingChange breakingChange)
{
var stopwatch = Stopwatch.StartNew();
var project = GetOrLoadProject();
var documentDiagnosticsMap = ComputeDiagnostics(project, breakingChange);
Console.WriteLine($"{breakingChange.EquivalenceKey} - Analysis done in {stopwatch.ElapsedMilliseconds}ms");
Console.WriteLine($"{breakingChange.EquivalenceKey} - Found {documentDiagnosticsMap.Sum(x => x.Value.Count())} counts of diagnostics to fix");
if (documentDiagnosticsMap.Any())
{
ApplyFixes(documentDiagnosticsMap, breakingChange);
}
Console.WriteLine($"{breakingChange.EquivalenceKey} - Finished migration in {stopwatch.ElapsedMilliseconds}ms (analysis and fix)");
Console.WriteLine();
}
private void ApplyFixes(Dictionary <Document, List <Diagnostic> > documentDiagnosticsMap, BreakingChange breakingChange)
{
if (!documentDiagnosticsMap.Any())
{
return;
}
var cancellationToken = new CancellationToken();
var diagnosticProvider = new CustomDiagnosticProvider(documentDiagnosticsMap);
var fixAllContext = new FixAllContext(documentDiagnosticsMap.First().Key, breakingChange.CodeFix, FixAllScope.Project,
breakingChange.EquivalenceKey, breakingChange.DiagnosticIds, diagnosticProvider, cancellationToken);
var fixes = WellKnownFixAllProviders.BatchFixer.GetFixAsync(fixAllContext).Result;
var operations = fixes.GetOperationsAsync(cancellationToken).Result;
foreach (var operation in operations)
{
operation.Apply(_workspace, cancellationToken);
}
}
private Dictionary <Document, List <Diagnostic> > ComputeDiagnostics(Project project, BreakingChange breakingChange)
{
var documentDiagnosticsMap = new Dictionary <Document, List <Diagnostic> >();
var compilation = project.GetCompilationAsync().Result;
var diagnosticResults = compilation.WithAnalyzers(ImmutableArray.Create(breakingChange.Analyzer)).GetAnalyzerDiagnosticsAsync().Result;
var interestingResults = diagnosticResults.Where(x => x.Severity != DiagnosticSeverity.Hidden).ToArray();
foreach (var diagnostic in interestingResults)
{
if (diagnostic.Severity != DiagnosticSeverity.Hidden)
{
var doc = project.GetDocument(diagnostic.Location.SourceTree);
if (!documentDiagnosticsMap.ContainsKey(doc))
{
documentDiagnosticsMap[doc] = new List <Diagnostic>();
}
documentDiagnosticsMap[doc].Add(diagnostic);
}
}
return(documentDiagnosticsMap);
}