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1   /*
2    * Copyright (C) 2006 uguu@users.sourceforge.jp, All Rights Reserved.
3    *
4    * Redistribution and use in source and binary forms, with or without
5    * modification, are permitted provided that the following conditions
6    * are met:
7    *
8    *    1. Redistributions of source code must retain the above copyright
9    *       notice, this list of conditions and the following disclaimer.
10   *
11   *    2. Redistributions in binary form must reproduce the above copyright
12   *       notice, this list of conditions and the following disclaimer in the
13   *       documentation and/or other materials provided with the distribution.
14   *
15   *    3. Neither the name of Clarkware Consulting, Inc. nor the names of its
16   *       contributors may be used to endorse or promote products derived
17   *       from this software without prior written permission. For written
18   *       permission, please contact clarkware@clarkware.com.
19   *
20   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
21   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
22   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
23   * CLARKWARE CONSULTING OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
26   * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28   * NEGLIGENCE OR OTHERWISE) ARISING IN  ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30   */
31  
32  package jp.sourceforge.rpn_computer;
33  
34  import java.util.ArrayList;
35  import java.util.List;
36  
37  /**
38   * <p>
39   * コンパイルの情報を保持するコンテキストです。
40   * </p>
41   * 
42   * @author uguu@users.sourceforge.jp
43   */
44  public final class RpnCompileContext {
45  
46      private List commandList = new ArrayList();
47  
48      /**
49       * <p>
50       * コンテキストにコンパイルされたコマンドを追加します。
51       * </p>
52       * 
53       * @param command
54       *            追加するコマンド。nullの場合、{@link NullPointerException}例外をスローします。
55       */
56      public void add(RpnCommand command) {
57          if (command == null) {
58              throw new NullPointerException("commandがnullです。");
59          }
60          this.commandList.add(command);
61      }
62  
63      /**
64       * <p>
65       * コンテキストに追加された一連のコマンドを返します。
66       * </p>
67       * 
68       * @return コンテキストに追加された一連のコマンド。
69       */
70      public RpnCommandList toCommandList() {
71          RpnCommand[] commands = (RpnCommand[]) this.commandList.toArray(new RpnCommand[0]);
72          RpnCommandList cl = new RpnCommandList(commands);
73          return cl;
74      }
75  }