private IEnumerable <ParseItem> GetColors(SnapshotSpan span)
{
ParseItem complexItem = _tree.StyleSheet.ItemFromRange(span.Start, span.Length);
if (complexItem == null || (!(complexItem is AtDirective) && !(complexItem is RuleBlock) && !(complexItem is LessVariableDeclaration) && !(complexItem is FunctionArgument)))
{
return(Enumerable.Empty <ParseItem>());
}
var colorCrawler = new CssItemAggregator <ParseItem>(filter: e => e.AfterEnd > span.Start && e.Start < span.End)
{
(HexColorValue h) => h,
(FunctionColor c) => c,
(TokenItem i) => (i.PreviousSibling == null || (i.PreviousSibling.Text != "@" && i.PreviousSibling.Text != "$")) && // Ignore variable names that happen to be colors
i.TokenType == CssTokenType.Identifier &&
(i.FindType <Declaration>() != null || i.FindType <LessExpression>() != null) && // Ignore classnames that happen to be colors
Color.FromName(i.Text).IsNamedColor
? i : null
};
return(colorCrawler.Crawl(complexItem).Where(o => o != null));
//IEnumerable<ParseItem> declarations;
//var lessVar = complexItem as LessVariableDeclaration;
//if (lessVar != null)
//{
// declarations = new[] { lessVar.Value };
//}
//else
//{
// declarations = new CssItemAggregator<ParseItem>(filter: e => e.AfterEnd > span.Start && e.Start < span.End)
// {
// (LessMixinArgument a) => a.Argument,
// (LessMixinDeclarationArgument a) => a.Variable.Value,
// (FunctionArgument a) => a.ArgumentItems
// }.Crawl(complexItem).Where(d => d != null);
//}
//TODO: This doesn't seem to work correctly, probably because I'm reusing the mutable crawler.
//return declarations.SelectMany(colorCrawler.Crawl).Where(o => o != null);
}
private IEnumerable <ParseItem> GetColors(SnapshotSpan span)
{
ParseItem complexItem = _tree.StyleSheet.ItemFromRange(span.Start, span.Length);
if (complexItem == null || (!(complexItem is AtDirective) && !(complexItem is RuleBlock) && !(complexItem is LessVariableDeclaration) && !(complexItem is FunctionArgument)))
{
return(Enumerable.Empty <ParseItem>());
}
var colorCrawler = new CssItemAggregator <ParseItem>(filter: e => e.AfterEnd > span.Start && e.Start < span.End)
{
(HexColorValue h) => h,
(FunctionColor c) => c,
(TokenItem i) => (i.PreviousSibling == null || (i.PreviousSibling.Text != "@" && i.PreviousSibling.Text != "$")) && // Ignore variable names that happen to be colors
i.TokenType == CssTokenType.Identifier &&
(i.FindType <Declaration>() != null || i.FindType <LessExpression>() != null) && // Ignore classnames that happen to be colors
Color.FromName(i.Text).IsNamedColor
? i : null
};
return(colorCrawler.Crawl(complexItem).Where(o => o != null));
}