ProjectCommitsPage.java 文件源码

@Nullable
private QueryContext parse(@Nullable String query) {
    if (query != null) {
        ANTLRInputStream is = new ANTLRInputStream(query); 
        CommitQueryLexer lexer = new CommitQueryLexer(is);
        lexer.removeErrorListeners();
        lexer.addErrorListener(new BaseErrorListener() {

            @Override
            public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line,
                    int charPositionInLine, String msg, RecognitionException e) {
                if (e != null) {
                    logger.error("Error lexing commit query", e);
                } else if (msg != null) {
                    logger.error("Error lexing commit query: " + msg);
                }
                throw new RuntimeException("Malformed commit query");
            }

        });
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        CommitQueryParser parser = new CommitQueryParser(tokens);
        parser.removeErrorListeners();
        parser.setErrorHandler(new BailErrorStrategy());
        return parser.query();
    } else {
        return null;
    }
}