internal void AppendDeclarations(StyleDeclaration style, string declarations)
{
var tokenizer = CreateTokenizer(declarations);
var builder = new StylesheetComposer(tokenizer, this);
builder.FillDeclarations(style);
}
internal async Task <Stylesheet> ParseAsync(Stylesheet sheet, TextSource source)
{
await source.PrefetchAllAsync(CancellationToken.None).ConfigureAwait(false);
var tokenizer = new Lexer(source);
var start = tokenizer.GetCurrentPosition();
var builder = new StylesheetComposer(tokenizer, this);
var tasks = new List <Task>();
var end = builder.CreateRules(sheet);
var range = new TextRange(start, end);
sheet.StylesheetText = new StylesheetText(range, source);
foreach (var rule in sheet.Rules)
{
if (rule.Type == RuleType.Charset)
{
continue;
}
if (rule.Type != RuleType.Import)
{
break;
}
}
await TaskEx.WhenAll(tasks).ConfigureAwait(false);
return(sheet);
}
private T Parse <T>(string source, Func <StylesheetComposer, Token, Tuple <T, Token> > create)
{
var tokenizer = CreateTokenizer(source);
var token = tokenizer.Get();
var builder = new StylesheetComposer(tokenizer, this);
var pair = create(builder, token);
return(pair.Item2.Type == TokenType.EndOfFile ? pair.Item1 : default(T));
}
private T Parse <T>(string source, Func <StylesheetComposer, Token, T> create)
{
var tokenizer = CreateTokenizer(source);
var token = tokenizer.Get();
var builder = new StylesheetComposer(tokenizer, this);
var rule = create(builder, token);
return(tokenizer.Get().Type == TokenType.EndOfFile ? rule : default(T));
}
internal TokenValue ParseValue(string valueText)
{
var tokenizer = CreateTokenizer(valueText);
var token = default(Token);
var builder = new StylesheetComposer(tokenizer, this);
var value = builder.CreateValue(ref token);
return(token.Type == TokenType.EndOfFile ? value : null);
}
internal Stylesheet Parse(TextSource source)
{
var sheet = new Stylesheet(this);
var tokenizer = new Lexer(source);
var start = tokenizer.GetCurrentPosition();
var builder = new StylesheetComposer(tokenizer, this);
var end = builder.CreateRules(sheet);
var range = new TextRange(start, end);
sheet.StylesheetText = new StylesheetText(range, source);
return(sheet);
}
