public override ParseResult Parse()
{
var element = new ClassSubroutineDeclarationElement();
element
.Add(ParseKeyword(Keywords.Constructor, Keywords.Function, Keywords.Method))
.Add(TypeParser.IsValid(Tokens.FirstOrDefault())
? ParseElement(ElementCategory.Type)
: ParseKeyword(Keywords.Void))
.Add(ParseIdentifier())
.Add(ParseSymbol(Symbols.OpeningBrace))
.Add(ParseOptional(
ParameterListParser.IsValid,
ElementCategory.ParameterList,
new ParameterListElement()))
.Add(ParseSymbol(Symbols.ClosingBrace))
.Add(ParseElement(ElementCategory.SubroutineBody));
return(new ParseResult(ConsumedTokensCount, element));
}
public static bool IsValid(IToken token)
{
return(TypeParser.IsValid(token));
}