private static void Tokenize(List <Token> tokens, Type dataType, Type defaultCriterionType)
{
if (!typeof(FilterCriterion).IsAssignableFrom(defaultCriterionType))
{
throw new DataGridInternalException("The default criterion type should be derived from the FilterCriterion class.");
}
List <int> parserPriorities = new List <int>();
FilterParser.FillParserPriorityList(parserPriorities);
FilterParser.Tokenize(parserPriorities, tokens);
if ((tokens.Count == 1) && (tokens[0] is ValueToken))
{
if (defaultCriterionType == typeof(ContainsFilterCriterion))
{
// ContainsFilterCriterion has no keyword associated; it won't be handled when
// building the criterion. Initialize it with the Value already in it.
FilterCriterionToken containsToken = new FilterCriterionToken(( FilterCriterion )Activator.CreateInstance(defaultCriterionType, (( ValueToken )tokens[0]).Value));
tokens.Clear();
tokens.Add(containsToken);
}
else
{
// Insert the default token previous to the value.
FilterCriterionToken defaultToken = new FilterCriterionToken(( FilterCriterion )Activator.CreateInstance(defaultCriterionType));
tokens.Insert(0, defaultToken);
}
}
}
private static List <Token> GetTokens(string expression, Type dataType)
{
List <Token> tokens = new List <Token>();
FilterParser.LastError = null;
FilterParser.PrepareExpressionTokens(expression, tokens);
FilterParser.Tokenize(tokens, dataType, FilterParser.GetDefaultCriterionType(dataType));
FilterParser.TrimTokens(tokens);
return(tokens);
}
