public static ImmutableArray <Diagnostic> GetDiagnostics(
SyntaxNode node,
SemanticModel model,
CancellationToken token)
{
var nullableParametersVisitor = new NullableParametersVisitor(model, token);
nullableParametersVisitor.Visit(node);
var nullableParameters = nullableParametersVisitor.NullableParameters;
var existingNullChecksVisitor = new ExistingNullChecksVisitor(model, token);
existingNullChecksVisitor.Visit(node);
var existingNullChecks = existingNullChecksVisitor.ExistingNullChecks;
var builder = ImmutableArray.CreateBuilder <Diagnostic>();
foreach (var nullableParameter in nullableParameters)
{
if (!existingNullChecks.Any(nullCheck => nullCheck.ParameterIndex == nullableParameter.Index))
{
var diagnostic = Diagnostic.Create(
Descriptor,
nullableParameter.Syntax.Identifier.GetLocation(),
properties: ImmutableDictionary <string, string?> .Empty.Add(
nameof(NullableParameter.Index),
nullableParameter.Index.ToString()));
builder.Add(diagnostic);
}
}
return(builder.ToImmutable());
}
private void VisitBaseMethodDeclaration(CSharpSyntaxNode node)
{
var existingNullChecksVisitor = new ExistingNullChecksVisitor(model, token);
existingNullChecksVisitor.Visit(node);
existingNullChecks = existingNullChecksVisitor.ExistingNullChecks;
}
