GrammarParserFactory.java 文件源码

@NonNull
public GrammarParser getParser(@NonNull TokenStream input) {
    GrammarParser result = createParser(input);
    result.getInterpreter().setPredictionMode(PredictionMode.LL);
    result.removeErrorListeners();
    result.addErrorListener(DescriptiveErrorListener.INSTANCE);
    result.setBuildParseTree(false);
    result.setErrorHandler(new DefaultErrorStrategy());
    return result;
}