/// <summary>
/// This must be called at the start of any @directive's Parse() function.
/// It fills in the "At" and "Keyword" variables.
/// "Keyword" could end up being null, but "At" is always set.
/// </summary>
protected virtual void ParseAtAndKeyword(ItemFactory itemFactory, ITextProvider text, TokenStream tokens)
{
Debug.Assert(tokens.CurrentToken.TokenType == CssTokenType.At);
At = Children.AddCurrentAndAdvance(tokens, CssClassifierContextType.AtDirectiveName);
if (tokens.CurrentToken.Start == At.AfterEnd &&
tokens.CurrentToken.TokenType == CssTokenType.At &&
AllowDoubleAt(text))
{
// Two @'s in a row (@@directive). Ignore the first one for Razor support.
At = Children.AddCurrentAndAdvance(tokens, CssClassifierContextType.AtDirectiveName);
}
// Check for the directive name
if (tokens.CurrentToken.Start == At.AfterEnd &&
tokens.CurrentToken.TokenType == CssTokenType.Identifier)
{
Keyword = Children.AddCurrentAndAdvance(tokens, CssClassifierContextType.AtDirectiveName);
}
else
{
At.AddParseError(ParseErrorType.AtDirectiveNameMissing, ParseErrorLocation.AfterItem);
}
}
