return null;

  }

 

  public String getDescription(String name) {

    return "Unregisters command.";

  }

 

  public String getHelp(String name) {

    return "Unregisters command."

      + CRLF + "Syntax: " + name + " command";

  }

 

  private Interpreter interpreter;

 

  private final static String CRLF =

    System.getProperty("line.separator");

 

}

Испытательный полигон

Вот все работы и завершены. Теперь самое время увидеть интерпретатор в действии.

package simpleclitest;

 

import java.io.*;

 

import simplecli.*;

 

public class BaseInterpreterTest {

 

  public static void main(String[] args)

    throws IOException {

 

    System.out.println("BaseInterpreter testbed");

 

    BufferedReader in = new BufferedReader(

      new InputStreamReader(System.in));

    PrintWriter out = new PrintWriter(System.out, true);

 

    Interpreter interpreter = new BaseInterpreter();

    interpreter.interpret(in, out, out);

  }

 

}

Компилируем, запускаем, экспериментируем:

BaseInterpreter testbed

>help

 

bye     Exits current interpreter session.

quit    Exits current interpreter session.

?       Prints help infomation.

help    Prints help infomation.

exit    Exits current interpreter session.

unregister      Unregisters command.

register        Registers new command.

set     Manages environment variables.

 

---

Предыдущая страница	Оглавление	Следующая страница
[001] [002] [003] [004] [005] [006] [007] [008] [009] [010] [011] [012] [013] [014] [015] [016] [017] [018] [019] [020] [021] [022] [023] [024] [025] [026] [027] [028] [029] [030] [031] [032] [033] [034] [035] [036] [037] [038] [039] [040] [041] [042] [043] [044] [045] [046] [047] [048] [049] [050] [051] [052] [053] [054] [055] [056] [057] [058] [059] [060] [061] [062] [063] [064] [065] [066] [067] [068] [069] [070] [071] [072] [073] [074] [075] [076] [077] [078] [079] [080] [081] [082] [083] [084] [085] [086] [087] [088] [089] [090] [091] [092] [093] [094] [095] [096] [097] [098] [099] [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179]