UserAgentTreeFlattener.java 文件源码

private UserAgentContext parseUserAgent(UserAgent userAgent) {
    String userAgentString = EvilManualUseragentStringHacks.fixIt(userAgent.getUserAgentString());

    CodePointCharStream input = CharStreams.fromString(userAgentString);
    UserAgentLexer lexer = new UserAgentLexer(input);

    CommonTokenStream tokens = new CommonTokenStream(lexer);

    UserAgentParser parser = new UserAgentParser(tokens);

    if (!verbose) {
        lexer.removeErrorListeners();
        parser.removeErrorListeners();
    }
    lexer.addErrorListener(userAgent);
    parser.addErrorListener(userAgent);

    return parser.userAgent();
}