private static bool IsRecursiveYield(YieldStatementSyntax node, SemanticModel semanticModel, IMethodSymbol method)
{
var methodName = method.Name;
foreach (var ancestor in node.Ancestors())
{
switch (ancestor)
{
case MethodDeclarationSyntax _:
{
return(false);
}
case ForEachStatementSyntax loop:
{
foreach (var invocation in loop.DescendantNodes().OfType <InvocationExpressionSyntax>())
{
var calledMethod = DetectCalledMethod(semanticModel, invocation, methodName);
if (calledMethod is null)
{
continue;
}
if (method.IsExtensionMethod && calledMethod.IsExtensionMethod)
{
if (method.ContainingType.Equals(calledMethod.ContainingType, SymbolEqualityComparer.IncludeNullability))
{
return(true);
}
}
else
{
if (method.Equals(calledMethod, SymbolEqualityComparer.IncludeNullability))
{
return(true);
}
}
}
return(false);
}
}
}
return(false);
}