// public static methods
public static AstFilter Translate(TranslationContext context, MethodCallExpression expression)
{
var method = expression.Method;
var arguments = expression.Arguments;
if (method.IsOneOf(__stringInOrNinMethods))
{
var fieldExpression = arguments[0];
var field = ExpressionToFilterFieldTranslator.Translate(context, fieldExpression);
var valuesExpression = arguments[1];
if (valuesExpression is ConstantExpression constantValuesExpression)
{
var serializedValues = new List <BsonValue>();
var values = ((IEnumerable <StringOrRegularExpression>)constantValuesExpression.Value).ToList();
var stringSerializer = StringSerializer.Instance;
var regularExpressionSerializer = BsonRegularExpressionSerializer.Instance;
foreach (var value in values)
{
BsonValue serializedValue;
if (value?.Type == typeof(BsonRegularExpression))
{
var regularExpression = value.RegularExpression;
serializedValue = SerializationHelper.SerializeValue(regularExpressionSerializer, regularExpression);
}
else
{
var @string = value?.String;
serializedValue = SerializationHelper.SerializeValue(stringSerializer, @string);
}
serializedValues.Add(serializedValue);
}
return(method.IsOneOf(__stringInMethods) ? AstFilter.In(field, serializedValues) : AstFilter.Nin(field, serializedValues));
}
}
throw new ExpressionNotSupportedException(expression);
}