private static void Handle(SyntaxNodeAnalysisContext context)
{
if (!context.IsExcludedFromAnalysis() &&
context.Node is ArgumentSyntax argument &&
argument.Parent is ArgumentListSyntax argumentList &&
argumentList.Parent is InvocationExpressionSyntax invocation &&
argument.RefOrOutKeyword.IsEither(SyntaxKind.RefKeyword, SyntaxKind.OutKeyword) &&
context.SemanticModel.TryGetSymbol(invocation, context.CancellationToken, out var method) &&
method.TrySingleDeclaration(context.CancellationToken, out BaseMethodDeclarationSyntax declaration) &&
method.TryFindParameter(argument, out var parameter) &&
Disposable.IsPotentiallyAssignableFrom(parameter.Type, context.Compilation))
{
if (Disposable.IsCreation(argument, context.SemanticModel, context.CancellationToken).IsEither(Result.Yes, Result.AssumeYes) &&
!Disposable.IsAddedToFieldOrProperty(parameter, declaration, context.SemanticModel, context.CancellationToken) &&
context.SemanticModel.TryGetSymbol(argument.Expression, context.CancellationToken, out ISymbol symbol))
{
if (LocalOrParameter.TryCreate(symbol, out var localOrParameter) &&
Disposable.ShouldDispose(localOrParameter, argument.Expression, context.SemanticModel, context.CancellationToken))
{
context.ReportDiagnostic(Diagnostic.Create(IDISP001DisposeCreated.Descriptor, argument.GetLocation()));
}
if (Disposable.IsAssignedWithCreated(symbol, invocation, context.SemanticModel, context.CancellationToken).IsEither(Result.Yes, Result.AssumeYes) &&
!Disposable.IsDisposedBefore(symbol, invocation, context.SemanticModel, context.CancellationToken))
{
context.ReportDiagnostic(Diagnostic.Create(IDISP003DisposeBeforeReassigning.Descriptor, argument.GetLocation()));
}
}
}
}
