Java

Java version of SimplePEG

Using example:

String grammar = "GRAMMAR url\n" +
        "\n" +
        "url       ->  scheme \"://\" host pathname search hash?;\n" +
        "scheme    ->  \"http\" \"s\"?;\n" +
        "host      ->  hostname port?;\n" +
        "hostname  ->  segment (\".\" segment)*;\n" +
        "segment   ->  [a-z0-9-]+;\n" +
        "port      ->  \":\" [0-9]+;\n" +
        "pathname  ->  \"/\" [^ ?]*;\n" +
        "search    ->  (\"?\" [^ #]*)?;\n" +
        "hash      ->  \"#\" [^ ]*;";

RuleProcessor rp = new RuleProcessor(SpegParser.createAndExec(grammar));
    
System.out.println(rp.check("https://simplepeg.github.io/"));
System.out.println(rp.check("https://google.com/"));
System.out.println(rp.check("https://abcdssss.....com/"));