internal async Task <CssStyleSheet> ParseStylesheetAsync(CssStyleSheet sheet, TextSource source)
{
await source.PrefetchAllAsync(CancellationToken.None).ConfigureAwait(false);
var tokenizer = new CssTokenizer(source);
var start = tokenizer.GetCurrentPosition();
var builder = new CssBuilder(tokenizer, this);
var document = sheet.GetDocument() as Document;
var tasks = new List <Task>();
var end = builder.CreateRules(sheet);
var range = new TextRange(start, end);
sheet.SourceCode = new TextView(range, source);
foreach (var rule in sheet.Rules)
{
if (rule.Type == CssRuleType.Charset)
{
continue;
}
else if (rule.Type != CssRuleType.Import)
{
break;
}
else
{
var import = (CssImportRule)rule;
tasks.Add(import.LoadStylesheetFromAsync(document));
}
}
await TaskEx.WhenAll(tasks).ConfigureAwait(false);
return(sheet);
}
/// <summary>
/// Takes a text source and populate the provided CSS sheet.
/// </summary>
internal ICssStyleSheet ParseStylesheet(CssStyleSheet sheet, TextSource source)
{
var tokenizer = CreateTokenizer(source, _config);
var builder = new CssBuilder(tokenizer, this);
builder.CreateRules(sheet);
sheet.ParseTree = builder.Container;
return(sheet);
}
internal ICssStyleSheet ParseStylesheet(TextSource source)
{
var sheet = new CssStyleSheet(this);
var tokenizer = new CssTokenizer(source);
var start = tokenizer.GetCurrentPosition();
var builder = new CssBuilder(tokenizer, this);
var end = builder.CreateRules(sheet);
var range = new TextRange(start, end);
sheet.SourceCode = new TextView(range, source);
return(sheet);
}