1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 *
18 *
19 * !!!MODIFIED BY DMITRI PLOTNIKOV - DO NOT REGENERATE!!!
20 */
21
22 package org.apache.commons.jxpath.ri.parser;
23
24 public class TokenMgrError extends Error {
25 /*
26 * Ordinals for various reasons why an Error of this type can be thrown.
27 */
28
29 /**
30 *
31 */
32 private static final long serialVersionUID = 1L;
33 /**
34 * Lexical error occurred.
35 */
36 static final int LEXICAL_ERROR = 0;
37 /**
38 * An attempt wass made to create a second instance of a static token manager.
39 */
40 static final int STATIC_LEXER_ERROR = 1;
41 /**
42 * Tried to change to an invalid lexical state.
43 */
44 static final int INVALID_LEXICAL_STATE = 2;
45 /**
46 * Detected (and bailed out of) an infinite loop in the token manager.
47 */
48 static final int LOOP_DETECTED = 3;
49
50 /**
51 * Replaces unprintable characters by their escaped (or Unicode escaped) equivalents in the given string
52 *
53 * @param str TODO
54 * @return TODO
55 */
56 public static final String addEscapes(final String str) {
57 final StringBuilder retval = new StringBuilder();
58 char ch;
59 for (int i = 0; i < str.length(); i++) {
60 switch (str.charAt(i)) {
61 case 0:
62 continue;
63 case '\b':
64 retval.append("\\b");
65 continue;
66 case '\t':
67 retval.append("\\t");
68 continue;
69 case '\n':
70 retval.append("\\n");
71 continue;
72 case '\f':
73 retval.append("\\f");
74 continue;
75 case '\r':
76 retval.append("\\r");
77 continue;
78 case '\"':
79 retval.append("\\\"");
80 continue;
81 case '\'':
82 retval.append("\\\'");
83 continue;
84 case '\\':
85 retval.append("\\\\");
86 continue;
87 default:
88 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
89 final String s = "0000" + Integer.toString(ch, 16);
90 retval.append("\\u" + s.substring(s.length() - 4));
91 } else {
92 retval.append(ch);
93 }
94 continue;
95 }
96 }
97 return retval.toString();
98 }
99
100 /**
101 * Returns a detailed message for the Error when it is thrown by the token manager to indicate a lexical error.
102 *
103 * Note: You can customize the lexical error message by modifying this method.
104 *
105 * @param EOFSeen indicates if EOF caused the lexicl error
106 * @param lexState lexical state in which this error occurred
107 * @param errorLine line number when the error occurred
108 * @param errorColumn column number when the error occurred
109 * @param errorAfter prefix that was seen before this error occurred
110 * @param curChar the offending character
111 * @return TODO
112 */
113 protected static String LexicalError(final boolean EOFSeen, final int lexState, final int errorLine, final int errorColumn, final String errorAfter,
114 final char curChar) {
115 return "Lexical error at line " + errorLine + ", column " + errorColumn + ". Encountered: "
116 + (EOFSeen ? "<EOF> " : "\"" + addEscapes(String.valueOf(curChar)) + "\"" + " (" + (int) curChar + "), ") + "after : \""
117 + addEscapes(errorAfter) + "\"";
118 }
119
120 /**
121 * Indicates the reason why the exception is thrown. It will have one of the above 4 values.
122 */
123 int errorCode;
124 private int position;
125 /*
126 * Constructors of various flavors follow.
127 */
128 private char character;
129
130 public TokenMgrError() {
131 }
132
133 public TokenMgrError(final boolean EOFSeen, final int lexState, final int errorLine, final int errorColumn, final String errorAfter, final char curChar,
134 final int reason) {
135 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
136 // ADDED BY ME FROM THIS POINT TO THE EOF - DMITRI PLOTNIKOV
137 position = errorColumn - 1;
138 character = curChar;
139 }
140
141 public TokenMgrError(final String message, final int reason) {
142 super(message);
143 errorCode = reason;
144 }
145
146 public char getCharacter() {
147 return character;
148 }
149
150 /**
151 * You can also modify the body of this method to customize your error messages. For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not of
152 * end-users concern, so you can return something like :
153 *
154 * "Internal Error : Please file a bug report .... "
155 *
156 * from this method for such cases in the release version of your parser.
157 */
158 @Override
159 public String getMessage() {
160 return super.getMessage();
161 }
162
163 public int getPosition() {
164 return position;
165 }
166 }