// This is copied from the base implementation.
// Just want to make sure we disallow yield in filters
protected override CatchBlock VisitCatchBlock(CatchBlock node)
{
ParameterExpression v = VisitAndConvert(node.Variable, "VisitCatchBlock");
int yields = _yields.Count;
Expression f = Visit(node.Filter);
if (yields != _yields.Count)
{
// No one needs this yet, and it's not clear what it should even do
throw new NotSupportedException("yield in filter is not allowed");
}
Expression b = Visit(node.Body);
if (v == node.Variable && b == node.Body && f == node.Filter)
{
return(node);
}
return(Expression.MakeCatchBlock(node.Test, v, b, f));
}