private void StartAnalyzeCompilation([NotNull] CompilationStartAnalysisContext context)
{
Guard.NotNull(context, nameof(context));
AnalyzerSettings settings = SettingsProvider.LoadSettings(context.Options, context.CancellationToken);
NullabilityAttributeSymbols nullSymbols = NullabilityAttributeProvider.GetCached()
.GetSymbols(context.Compilation, context.CancellationToken);
if (nullSymbols == null)
{
// Nullability attributes not found; keep silent.
return;
}
IExternalAnnotationsResolver resolver = ExternalAnnotationsResolver.GetCached();
resolver.EnsureScanned();
var generatedCodeCache = new GeneratedCodeDocumentCache();
var typeCache = new FrameworkTypeCache(context.Compilation);
var nullabilityContext = new AnalysisScope(resolver, generatedCodeCache, typeCache, settings,
disableReportOnNullableValueTypesRule, appliesToItem);
var factory = new SymbolAnalyzerFactory(nullabilityContext);
ImmutableDictionary <string, string> properties = nullSymbols.GetMetadataNamesAsProperties();
context.RegisterSymbolAction(c => AnalyzeField(c, factory, properties), SymbolKind.Field);
context.RegisterSymbolAction(c => AnalyzeProperty(c, factory, properties), SymbolKind.Property);
context.RegisterSymbolAction(c => AnalyzeMethod(c, factory, properties), SymbolKind.Method);
context.RegisterSyntaxNodeAction(c => AnalyzeParameter(SyntaxToSymbolContext(c), factory, properties),
SyntaxKind.Parameter);
}
private void AnalyzeMethod(SymbolAnalysisContext context, [NotNull] SymbolAnalyzerFactory factory,
[NotNull] ImmutableDictionary <string, string> properties)
{
MethodReturnValueAnalyzer analyzer = factory.GetMethodReturnValueAnalyzer(context);
analyzer.Analyze(ruleForMethodReturnValue, properties);
}
private void AnalyzeProperty(SymbolAnalysisContext context, [NotNull] SymbolAnalyzerFactory factory,
[NotNull] ImmutableDictionary <string, string> properties)
{
PropertyAnalyzer analyzer = factory.GetPropertyAnalyzer(context);
analyzer.Analyze(ruleForProperty, properties);
}
private void AnalyzeParameter(SymbolAnalysisContext context, [NotNull] SymbolAnalyzerFactory factory,
[NotNull] ImmutableDictionary <string, string> properties)
{
// Bug workaround for https://github.com/dotnet/roslyn/issues/16209
if (context.Symbol != null)
{
ParameterAnalyzer analyzer = factory.GetParameterAnalyzer(context);
analyzer.Analyze(ruleForParameter, properties);
}
}
