CSSErrorStrategy.java 文件源码

public void sync(Parser recognizer) throws RecognitionException {
    ATNState s = recognizer.getInterpreter().atn.states.get(recognizer.getState());
    if (!this.inErrorRecoveryMode(recognizer)) {
        TokenStream tokens = recognizer.getInputStream();
        int la = tokens.LA(1);
        if (!recognizer.getATN().nextTokens(s).contains(la) && la != -1) {
            if (!recognizer.isExpectedToken(la)) {
                switch (s.getStateType()) {
                    case 3:
                    case 4:
                    case 5:
                    case 10:
                        throw new RecognitionException(recognizer, tokens, recognizer.getContext());
                    case 9:
                    case 11:
                        //added
                        this.reportUnwantedToken(recognizer);
                        throw new RecognitionException(recognizer, tokens, recognizer.getContext());
                    case 6:
                    case 7:
                    case 8:
                    default:
                }
            }
        }
    }
}