static QueryToken Append(this QueryToken baseToken, QueryToken suffix)
{
var steps = suffix.Follow(a => a.Parent).Reverse();
QueryToken token = baseToken;
foreach (var step in steps)
{
QueryToken?newToken = null;
if (step.Key == "Entity" && step is ColumnToken)
{
if (token.Type.CleanType() == step.Type.CleanType())
{
continue;
}
else
{
newToken = token.SubTokenInternal("[" + TypeLogic.GetCleanName(baseToken.Type.CleanType()) + "]", SubTokensOptions.CanElement) !;
}
}
newToken = token.SubTokenInternal(step.Key, SubTokensOptions.CanElement);
token = newToken ?? throw new InvalidOperationException($"Token '{step}' not found in '{token.FullKey()}'");
}
return(token);
}
static QueryToken SubTokenBasic(QueryToken token, QueryDescription qd, string key)
{
if (token == null)
{
var column = qd.Columns.SingleOrDefaultEx(a=>a.Name == key);
if (column == null)
return null;
return new ColumnToken(column, qd.QueryName);
}
else
{
return token.SubTokenInternal(key);
}
}