private static MediaQuery ParseQuery(string value, IPosition forPositon)
{
int i = value.IndexOf(' ');
if (i == -1)
{
i = value.Length;
}
var mediaType = value.Substring(0, i);
Media media;
if (!Enum.TryParse <Media>(mediaType, ignoreCase: true, result: out media))
{
Current.RecordError(ErrorType.Parser, forPositon, "Unrecognized media type '" + mediaType + "'");
throw new StoppedParsingException();
}
var clauses = new List <MediaQuery>();
var rest = value.Substring(i).Trim();
while (rest.StartsWith("and ", StringComparison.InvariantCultureIgnoreCase))
{
int j = rest.IndexOf(" and ", "and ".Length, StringComparison.InvariantCultureIgnoreCase);
if (j == -1)
{
j = rest.Length;
}
var clause = rest.Substring("and ".Length, j - "and ".Length).Trim();
clauses.Add(ParseMediaClause(clause, forPositon));
rest = rest.Substring(j).Trim();
}
if (rest.Length != 0)
{
Current.RecordError(ErrorType.Parser, forPositon, "Unexpected tail on media query, found '" + rest + "'");
throw new StoppedParsingException();
}
var mediaClause = new MediaType(media, forPositon);
if (clauses.Count == 0)
{
return(mediaClause);
}
MediaQuery ret = mediaClause;
foreach (var clause in clauses)
{
ret = new AndMedia(ret, clause, forPositon);
}
return(ret);
}
private static MediaQuery ParseQuery(string value, IPosition forPositon)
{
int i = value.IndexOf(' ');
if (i == -1) i = value.Length;
var mediaType = value.Substring(0, i);
Media media;
if (!Enum.TryParse<Media>(mediaType, ignoreCase: true, result: out media))
{
Current.RecordError(ErrorType.Parser, forPositon, "Unrecognized media type '" + mediaType + "'");
throw new StoppedParsingException();
}
var clauses = new List<MediaQuery>();
var rest = value.Substring(i).Trim();
while (rest.StartsWith("and ", StringComparison.InvariantCultureIgnoreCase))
{
int j = rest.IndexOf(" and ", "and ".Length, StringComparison.InvariantCultureIgnoreCase);
if (j == -1) j = rest.Length;
var clause = rest.Substring("and ".Length, j - "and ".Length).Trim();
clauses.Add(ParseMediaClause(clause, forPositon));
rest = rest.Substring(j).Trim();
}
if (rest.Length != 0)
{
Current.RecordError(ErrorType.Parser, forPositon, "Unexpected tail on media query, found '" + rest + "'");
throw new StoppedParsingException();
}
var mediaClause = new MediaType(media, forPositon);
if (clauses.Count == 0) return mediaClause;
MediaQuery ret = mediaClause;
foreach (var clause in clauses)
{
ret = new AndMedia(ret, clause, forPositon);
}
return ret;
}
