public CssDecleration Parse_Decleration()
{
Consume_All_Whitespace(Stream);
if (Stream.Next.Type != ECssTokenType.Ident)
{
throw new CssSyntaxErrorException(CssErrors.EXPECTING_IDENT, Stream);
}
CssDecleration Dec = Consume_Decleration(Stream);
if (Dec is object)
{
throw new CssSyntaxErrorException(CssErrors.CANT_CONSUME_DECLERATION, Stream);
}
return(Dec);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]// Private static function called in loops, inline it
static CssDecleration Consume_Decleration(DataConsumer <CssToken> Stream)
{
if (Stream is null)
{
throw new CssParserException(CssErrors.STREAM_IS_NULL);
}
var name = (Stream.Consume() as ValuedTokenBase).Value;
CssDecleration Decleration = new CssDecleration(name);
// Consume all whitespace
Consume_All_Whitespace(Stream);
//while (Stream.Next.Type == ECssTokenType.Whitespace) { Stream.Consume(); }
if (Stream.Next.Type != ECssTokenType.Colon)
{
return(null); // Parser error
}
Stream.Consume(); // Consume the colon
CssToken Token;
do
{// Find all of the decleration values
Token = Stream.Consume();
if (Token.Type == ECssTokenType.EOF)
{
break;
}
//Decleration.Value.Add(new CssPreservedToken(Token));
Decleration.Values.Add(Token as CssComponent);// upcast to Component (Preserve the token)
}while (Token.Type != ECssTokenType.EOF);
CssToken A = null, B = null;
// Find the last two non-whitespace tokens out of the declerations values
for (int i = Decleration.Values.Count - 1; i >= 0; i--)
{
CssToken t = Decleration.Values[i];// (Decleration.Value[i] as CssPreservedToken).Value;
if (t.Type != ECssTokenType.Whitespace)
{
if (B is null)
{
B = t;
}
else
{
A = t;
break;
}
}
}
// Check if those last two values indicate this declerations 'important' flag is set
if (A.Type == ECssTokenType.Delim && (A as DelimToken).Value == UnicodeCommon.CHAR_EXCLAMATION_POINT)
{
if (B.Type == ECssTokenType.Ident && (B as IdentToken).Value.Equals("important", StringComparison.OrdinalIgnoreCase))
{
Decleration.Important = true;
}
}
return(Decleration);
}
