private static Expression Roundtrip(Expression expr, IExpressionSerializer serializer)
{
var slim = serializer.Lift(expr);
var bonsai = serializer.Serialize(slim);
var roundtrippedSlim = serializer.Deserialize(bonsai);
return(serializer.Reduce(roundtrippedSlim));
}
/// <summary>
/// Deserializes JSON into an expression.
/// </summary>
/// <param name="json">The JSON to deserialize.</param>
/// <returns>The deserialized expression.</returns>
private Expression DeserializeExpression(JToken json)
{
if (json == null)
{
return(null);
}
else if (json.Type == JTokenType.Null)
{
return(null);
}
var jsonText = GetJsonString(json);
if (_expressionSerializer != null)
{
var slim = DeserializeExpressionSlim(jsonText);
return(_expressionSerializer.Reduce(slim));
}
else
{
return(_deserializeExpression(jsonText));
}
}