public LangElement Parse(
ITokenProvider <SemanticValueType, Span> lexer,
INodesFactory <LangElement, Span> astFactory,
LanguageFeatures language,
IErrorSink <Span> errors = null,
int positionShift = 0)
{
if (lexer == null)
{
throw new ArgumentNullException(nameof(lexer));
}
if (astFactory == null)
{
throw new ArgumentNullException(nameof(astFactory));
}
// initialization:
_languageFeatures = language;
_lexer = new CompliantLexer(lexer);
_astFactory = astFactory;
_errors = errors ?? new EmptyErrorSink <Span>();
//InitializeFields();
_currentScope = new Scope(0);
base.Scanner = _lexer;
bool accept = base.Parse();
LangElement result = _astRoot;
// clean and let GC collect unused AST and other stuff:
//ClearFields();
return(result);
}
public BufferedLexer(CompliantLexer provider)
{
_provider = provider;
}