private static IEnumerable <IExpression> GetExpressions(QueryItem table, QuerySpan tokens, ParseContext context)
{
for (var i = tokens.Start; i < tokens.Start + tokens.Length; i++)
{
var token = tokens.List[i];
switch (token.Type)
{
case ODataTokenType.Parameter:
yield return(new ParameterReference(token.Text.Substring(1), false));
break;
case ODataTokenType.Date:
case ODataTokenType.TimeOfDay:
var dateText = token.Text;
if (dateText.StartsWith("datetime'"))
{
dateText = dateText.Substring(9).TrimEnd('\'');
}
if (!ZonedDateTime.TryParse(dateText, table.Context.GetTimeZone(), out var date))
{
throw new InvalidOperationException();
}
yield return(new DateTimeLiteral(date.LocalDateTime));
break;
case ODataTokenType.Decimal:
yield return(new FloatLiteral((double)((decimal)token.AsPrimitive())));
break;
case ODataTokenType.Single:
yield return(new FloatLiteral((double)((float)token.AsPrimitive())));
break;
case ODataTokenType.Double:
case ODataTokenType.NaN:
case ODataTokenType.NegInfinity:
case ODataTokenType.PosInfinity:
yield return(new FloatLiteral((double)token.AsPrimitive()));
break;
case ODataTokenType.False:
yield return(new BooleanLiteral(false));
break;
case ODataTokenType.Guid:
yield return(new StringLiteral(((Guid)token.AsPrimitive()).ToArasId()));
break;
case ODataTokenType.Integer:
yield return(new IntegerLiteral((int)token.AsPrimitive()));
break;
case ODataTokenType.Long:
yield return(new IntegerLiteral((long)token.AsPrimitive()));
break;
case ODataTokenType.String:
yield return(new StringLiteral((string)token.AsPrimitive()));
break;
case ODataTokenType.True:
yield return(new BooleanLiteral(true));
break;
case ODataTokenType.Null:
yield return(new NullLiteral());
break;
case ODataTokenType.Identifier:
if (string.Equals(context.Name, "$compute", StringComparison.OrdinalIgnoreCase) &&
string.Equals(tokens.List[i].Text, "as", StringComparison.OrdinalIgnoreCase))
{
yield return(new SelectExpression());
}
else
{
yield return(TryGetProperty(tokens.List, ref i, table, context));
}
break;
case ODataTokenType.And:
yield return(new AndOperator());
break;
case ODataTokenType.Or:
yield return(new OrOperator());
break;
case ODataTokenType.Equal:
yield return(new EqualsOperator());
break;
case ODataTokenType.NotEqual:
yield return(new NotEqualsOperator());
break;
case ODataTokenType.LessThan:
yield return(new LessThanOperator());
break;
case ODataTokenType.LessThanOrEqual:
yield return(new LessThanOrEqualsOperator());
break;
case ODataTokenType.GreaterThan:
yield return(new GreaterThanOperator());
break;
case ODataTokenType.GreaterThanOrEqual:
yield return(new GreaterThanOrEqualsOperator());
break;
case ODataTokenType.In:
yield return(new InOperator());
break;
case ODataTokenType.Add:
yield return(new AdditionOperator());
break;
case ODataTokenType.Subtract:
yield return(new SubtractionOperator());
break;
case ODataTokenType.Multiply:
yield return(new MultiplicationOperator());
break;
case ODataTokenType.Divide:
yield return(new DivisionOperator());
break;
case ODataTokenType.Modulo:
yield return(new ModulusOperator());
break;
case ODataTokenType.Not:
yield return(new NotOperator());
break;
case ODataTokenType.Negate:
yield return(new NegationOperator());
break;
case ODataTokenType.Star:
yield return(new AllProperties(table));
break;
case ODataTokenType.OpenParen:
yield return(new ListExpression());
break;
case ODataTokenType.CloseParen:
yield return(new EndParen());
break;
case ODataTokenType.Comma:
yield return(new Comma());
break;
case ODataTokenType.Base64:
case ODataTokenType.Binary:
case ODataTokenType.Duration:
case ODataTokenType.Has:
case ODataTokenType.Navigation:
throw new NotSupportedException();
default:
//return new IgnoredNode(token);
break;
}
}
}
