public Expression VisitZenStringAtExpr(ZenStringAtExpr expression, ExpressionConverterEnvironment parameter)
{
return(LookupOrCompute(expression, () =>
{
var e1 = expression.StringExpr.Accept(this, parameter);
var e2 = expression.IndexExpr.Accept(this, parameter);
return Expression.Call(null, atMethod, new Expression[] { e1, e2 });
}));
}
public ImmutableHashSet <object> VisitZenStringAtExpr(ZenStringAtExpr expression, Unit parameter)
{
throw new ZenException($"Invalid string type used with Decision Diagram backend.");
}