public StyleSheet Parse(string css)
{
_selectorFactory = new SelectorFactory();
_functionBuffers = new Stack <FunctionBuffer>();
_styleSheet = new StyleSheet();
_activeRuleSets = new Stack <RuleSet>();
_lexer = new Lexer(new StylesheetReader(css))
{
ErrorHandler = HandleLexerError
};
SetParsingContext(ParsingContext.DataBlock);
var tokens = _lexer.Tokens;
foreach (var token in tokens)
{
if (ParseTokenBlock(token))
{
continue;
}
HandleLexerError(ParserError.UnexpectedLineBreak, ErrorMessages.Default);
}
if (_property != null)
{
ParseTokenBlock(SpecialCharacter.Semicolon);
}
return(_styleSheet);
}
internal static BaseSelector ParseSelector(string selector)
{
var tokenizer = new Lexer(new StylesheetReader(selector));
var tokens = tokenizer.Tokens;
var selctor = new SelectorFactory();
foreach (var token in tokens)
{
selctor.Apply(token);
}
var result = selctor.GetSelector();
return(result);
}
private void ParsePseudoClassFunction(Block token)
{
if (token.GrammarSegment == GrammarSegment.Whitespace)
{
return;
}
switch (_attributeName)
{
case PseudoSelectorPrefix.PseudoFunctionNthchild:
case PseudoSelectorPrefix.PseudoFunctionNthlastchild:
case PseudoSelectorPrefix.PseudoFunctionNthOfType:
case PseudoSelectorPrefix.PseudoFunctionNthLastOfType:
{
switch (token.GrammarSegment)
{
case GrammarSegment.Ident:
case GrammarSegment.Number:
case GrammarSegment.Dimension:
_attributeValue += token.ToString();
return;
case GrammarSegment.Delimiter:
var chr = ((DelimiterBlock)token).Value;
if (chr == Specification.PlusSign || chr == Specification.MinusSign)
{
_attributeValue += chr;
return;
}
break;
}
break;
}
case PseudoSelectorPrefix.PseudoFunctionNot:
{
if (_nestedSelectorFactory == null)
{
_nestedSelectorFactory = new SelectorFactory();
}
if (token.GrammarSegment != GrammarSegment.ParenClose || _nestedSelectorFactory._selectorOperation != SelectorOperation.Data)
{
_nestedSelectorFactory.Apply(token);
return;
}
break;
}
case PseudoSelectorPrefix.PseudoFunctionDir:
{
if (token.GrammarSegment == GrammarSegment.Ident)
{
_attributeValue = ((SymbolBlock)token).Value;
}
_selectorOperation = SelectorOperation.PseudoClassFunctionEnd;
return;
}
case PseudoSelectorPrefix.PseudoFunctionLang:
{
if (token.GrammarSegment == GrammarSegment.Ident)
{
_attributeValue = ((SymbolBlock)token).Value;
}
_selectorOperation = SelectorOperation.PseudoClassFunctionEnd;
return;
}
case PseudoSelectorPrefix.PseudoFunctionContains:
{
switch (token.GrammarSegment)
{
case GrammarSegment.String:
_attributeValue = ((StringBlock)token).Value;
break;
case GrammarSegment.Ident:
_attributeValue = ((SymbolBlock)token).Value;
break;
}
_selectorOperation = SelectorOperation.PseudoClassFunctionEnd;
return;
}
}
PrasePseudoClassFunctionEnd(token);
}
