private StyleObject ReadFunction(IStyleSheetLexer lexer, string functionName)
{
List <StyleObject> functionArgs = new List <StyleObject>();
bool exitLoop = false;
while (!exitLoop && lexer.Read(out IStyleSheetLexerToken token))
{
switch (token.Type)
{
case StyleSheetLexerTokenType.Value:
functionArgs.Add(new StyleObject(token.Value));
break;
case StyleSheetLexerTokenType.Function:
functionArgs.Add(ReadFunction(lexer, token.Value));
break;
case StyleSheetLexerTokenType.FunctionArgumentsStart:
break;
case StyleSheetLexerTokenType.FunctionArgumentSeparator:
break;
case StyleSheetLexerTokenType.FunctionArgumentsEnd:
exitLoop = true;
break;
default:
throw new UnexpectedTokenException($"Unexpected token: {token.Type}.");
}
}
StyleObject returnValue = PropertyUtilities.EvaluateFunction(functionName, functionArgs.ToArray(), options.FileReader);
if (returnValue.Type == StyleObjectType.Image)
{
disposableResources.Add(returnValue.GetImage());
}
return(returnValue);
}
public StyleObject(StyleObject value)
{
this.Type = value.Type;
this.value = value.value;
}
// Public members
public static IProperty Create(string name, StyleObject value)
{
return(Create(name, new[] { value }));
}
public static IProperty Create(PropertyType type, StyleObject value)
{
return(Create(type, new[] { value }));
}
