ScimFilterParserService.java 文件源码

private ScimFilterParser getParser(String filter) throws Exception {

        log.info(" getParser() ");

        // Get lexer
        ANTLRInputStream input = new ANTLRInputStream(filter);
        ScimFilterLexer lexer = new ScimFilterLexer(input);

        // Get list of matched tokens
        CommonTokenStream tokens = new CommonTokenStream(lexer);

        // Pass tokens to the parser
        ScimFilterParser parser = new ScimFilterParser(tokens);
        parser.setBuildParseTree(true);
        parser.setTrimParseTree(true);
        parser.setProfile(true);
        parser.removeErrorListeners();
        parser.setErrorHandler(new ScimFilterErrorHandler());

        return parser;
    }