private static DeclerationNode ParseClassDecleration(RuleContext classPart, ProtectionLevel protectionLevel, Interval interval)
{
//The second last child. And one for the zero-indexing.
int genericParametersIndex = classPart.ChildCount - 2 - 1;
ITerminalNode tn1 = (ITerminalNode)classPart.GetChild(0);
ITerminalNode tn2 = (ITerminalNode)classPart.GetChild(1);
CrawlParser.InheritancesContext baseTypes = classPart.GetChild(2) as CrawlParser.InheritancesContext;
IEnumerable <IdentifierNode> inheritances = baseTypes == null ? new List <IdentifierNode>() : ParseInheritances(baseTypes);
CrawlParser.Generic_parametersContext genericParametersContext =
classPart.GetChild(genericParametersIndex) as CrawlParser.Generic_parametersContext;
RuleContext body = (RuleContext)classPart.LastChild();
List <GenericParameterNode> genericParameters = new List <GenericParameterNode>();
if (genericParametersContext != null)
{
genericParameters.AddRange(ParseGenericParameters(genericParametersContext));
}
if (tn1.Symbol.Type != CrawlLexer.CLASS)
{
throw new CrawlImpossibleStateException("Trying to parse a class that is not a class", interval);
}
BlockNode bodyBlock = ParseBlockNode(body);
return(CrawlSyntaxNode.ClassTypeDecleration(interval, protectionLevel, null, ParseIdentifier(tn2), inheritances, genericParameters, bodyBlock));
}
private static IEnumerable <IdentifierNode> ParseInheritances(CrawlParser.InheritancesContext inheritances)
{
for (int i = 1; i < inheritances.ChildCount; i += 2)
{
yield return(ParseIdentifier((ITerminalNode)inheritances.GetChild(i)));
}
}
