private void AnalyzeNode(SyntaxNodeAnalysisContext context)
{
var cancellationToken = context.CancellationToken;
var node = (TThisExpressionSyntax)context.Node;
if (node.Parent is not TMemberAccessExpressionSyntax expr)
{
return;
}
var analyzerOptions = context.Options;
var syntaxTree = node.SyntaxTree;
var optionSet = analyzerOptions.GetAnalyzerOptionSet(syntaxTree, cancellationToken);
var model = context.SemanticModel;
if (!CanSimplifyTypeNameExpression(
model, expr, optionSet, out var issueSpan, cancellationToken))
{
return;
}
if (model.SyntaxTree.OverlapsHiddenPosition(issueSpan, cancellationToken))
{
return;
}
var symbolInfo = model.GetSymbolInfo(expr, cancellationToken);
if (symbolInfo.Symbol == null)
{
return;
}
var applicableOption = QualifyMembersHelpers.GetApplicableOptionFromSymbolKind(symbolInfo.Symbol.Kind);
var optionValue = optionSet.GetOption(applicableOption, model.Language);
if (optionValue == null)
{
return;
}
var severity = optionValue.Notification.Severity;
var builder = ImmutableDictionary.CreateBuilder <string, string?>();
// used so we can provide a link in the preview to the options page. This value is
// hard-coded there to be the one that will go to the code-style page.
builder["OptionName"] = nameof(CodeStyleOptions2.PreferIntrinsicPredefinedTypeKeywordInDeclaration);
builder["OptionLanguage"] = model.Language;
var diagnostic = DiagnosticHelper.Create(
Descriptor, syntaxTree.GetLocation(issueSpan), severity,
ImmutableArray.Create(expr.GetLocation()), builder.ToImmutable());
context.ReportDiagnostic(diagnostic);
}
private DiagnosticDescriptor GetRemoveQualificationDiagnosticDescriptor(SemanticModel model, SyntaxNode node, OptionSet optionSet, CancellationToken cancellationToken)
{
var symbolInfo = model.GetSymbolInfo(node, cancellationToken);
if (symbolInfo.Symbol == null)
{
return(null);
}
var applicableOption = QualifyMembersHelpers.GetApplicableOptionFromSymbolKind(symbolInfo.Symbol.Kind);
var optionValue = optionSet.GetOption(applicableOption, GetLanguageName());
var severity = optionValue.Notification.Value;
return(new DiagnosticDescriptor(
IDEDiagnosticIds.RemoveQualificationDiagnosticId,
s_localizableTitleRemoveThisOrMe,
s_localizableMessage,
DiagnosticCategory.Style,
severity,
isEnabledByDefault: true,
customTags: DiagnosticCustomTags.Unnecessary));
}
