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 jp.sourceforge.tokenizer.Token;
35 import jp.sourceforge.tokenizer.TokenInfo;
36
37 /**
38 * <p>
39 * 構文解析に失敗したことを現す例外です。
40 * </p>
41 *
42 * @author uguu@users.sourceforge.jp
43 */
44 public final class ParseException extends RuntimeException {
45
46 private Token token;
47
48 private TokenInfo[] tokenInfos;
49
50 /**
51 * <p>
52 * インスタンスを初期化します。期待したトークンとは違うトークンが出現したことを表すメッセージを構築します。
53 * </p>
54 *
55 * @param token
56 * 出現したトークン。
57 * @param tokenInfos
58 * 期待したトークンの情報の配列。
59 */
60 public ParseException(Token token, TokenInfo[] tokenInfos) {
61 super(ParseException.buildMessage(token, tokenInfos));
62
63 this.token = token;
64 this.tokenInfos = tokenInfos;
65 }
66
67 private static String buildMessage(Token token, TokenInfo[] tokenInfos) {
68 String msg;
69 if (token != null) {
70 msg = token.getLine() + "行目、" + token.getColumn() + "列目でトークン\"" + token.getToken() + "\"が出現しました。正しくは、次のパターンのトークンを期待しています。{";
71 } else {
72 msg = "期待したトークンが出現しませんでした。次のパターンのトークンを期待しています。{";
73 }
74 for (int i = 0; i < tokenInfos.length; i++) {
75 if (i != 0) {
76 msg += ", ";
77 }
78 msg += tokenInfos[i].getTokenPattern().pattern();
79 }
80 msg += "}";
81 return msg;
82 }
83
84 /**
85 * <p>
86 * 出現したトークンを返します。
87 * </p>
88 *
89 * @return 出現したトークン。
90 */
91 public Token getToken() {
92 return this.token;
93 }
94
95 /**
96 * <p>
97 * 期待したトークンの配列を返します。
98 * </p>
99 *
100 * @return 期待したトークンの配列。
101 */
102 public TokenInfo[] getTokenInfos() {
103 return this.tokenInfos;
104 }
105 }