private static IBoolable BuildTimeComparison(List <Token> tokens)
{
int index = tokens.TakeWhile(x => !TokenGroups.IsTimeComparingSign(x.GetTokenType())).Count();
if (index == 0 || index == tokens.Count - 1)
{
return(null);
}
ComparisonType type = tokens[index].GetTokenType().Equals(TokenType.IsAfter) ? ComparisonType.Bigger : ComparisonType.Smaller;
List <Token> leftTokens = tokens.GetRange(0, index);
List <Token> rightTokens = tokens.GetRange(index + 1, tokens.Count - index - 1);
ITimeable leftL = TimeableBuilder.Build(leftTokens);
ITimeable rightL = TimeableBuilder.Build(rightTokens);
if (leftL.IsNull() || rightL.IsNull())
{
return(null);
}
return(new TimeComparison(leftL, rightL, type));
}
private static bool ContainsOneTimeComparingToken(List <Token> tokens)
{
return(tokens.Where(x => TokenGroups.IsTimeComparingSign(x.GetTokenType())).Count() == 1);
}
