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1   /*
2    * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 0.7pre6 */
27  package com.sun.jmx.snmp.IPAcl;
28  
29  /**
30   * This exception is thrown when parse errors are encountered.
31   * You can explicitly create objects of this exception type by
32   * calling the method generateParseException in the generated
33   * parser.
34   *
35   * You can modify this class to customize your error reporting
36   * mechanisms so long as you retain the public fields.
37   */
38  class ParseException extends Exception {
39    private static final long serialVersionUID = -3695190720704845876L;
40  
41    /**
42     * This constructor is used by the method "generateParseException"
43     * in the generated parser.  Calling this constructor generates
44     * a new object of this type with the fields "currentToken",
45     * "expectedTokenSequences", and "tokenImage" set.  The boolean
46     * flag "specialConstructor" is also set to true to indicate that
47     * this constructor was used to create this object.
48     * This constructor calls its super class with the empty string
49     * to force the "toString" method of parent class "Throwable" to
50     * print the error message in the form:
51     *     ParseException: <result of getMessage>
52     */
53    public ParseException(Token currentTokenVal,
54                          int[][] expectedTokenSequencesVal,
55                          String[] tokenImageVal
56                         )
57    {
58      super("");
59      specialConstructor = true;
60      currentToken = currentTokenVal;
61      expectedTokenSequences = expectedTokenSequencesVal;
62      tokenImage = tokenImageVal;
63    }
64  
65    /**
66     * The following constructors are for use by you for whatever
67     * purpose you can think of.  Constructing the exception in this
68     * manner makes the exception behave in the normal way - i.e., as
69     * documented in the class "Throwable".  The fields "errorToken",
70     * "expectedTokenSequences", and "tokenImage" do not contain
71     * relevant information.  The JavaCC generated code does not use
72     * these constructors.
73     */
74  
75    public ParseException() {
76      super();
77      specialConstructor = false;
78    }
79  
80    public ParseException(String message) {
81      super(message);
82      specialConstructor = false;
83    }
84  
85    /**
86     * This variable determines which constructor was used to create
87     * this object and thereby affects the semantics of the
88     * "getMessage" method (see below).
89     */
90    protected boolean specialConstructor;
91  
92    /**
93     * This is the last token that has been consumed successfully.  If
94     * this object has been created due to a parse error, the token
95     * followng this token will (therefore) be the first error token.
96     */
97    public Token currentToken;
98  
99    /**
100    * Each entry in this array is an array of integers.  Each array
101    * of integers represents a sequence of tokens (by their ordinal
102    * values) that is expected at this point of the parse.
103    */
104   public int[][] expectedTokenSequences;
105 
106   /**
107    * This is a reference to the "tokenImage" array of the generated
108    * parser within which the parse error occurred.  This array is
109    * defined in the generated ...Constants interface.
110    */
111   public String[] tokenImage;
112 
113   /**
114    * This method has the standard behavior when this object has been
115    * created using the standard constructors.  Otherwise, it uses
116    * "currentToken" and "expectedTokenSequences" to generate a parse
117    * error message and returns it.  If this object has been created
118    * due to a parse error, and you do not catch it (it gets thrown
119    * from the parser), then this method is called during the printing
120    * of the final stack trace, and hence the correct error message
121    * gets displayed.
122    */
123   public String getMessage() {
124     if (!specialConstructor) {
125       return super.getMessage();
126     }
127     String expected = "";
128     int maxSize = 0;
129     for (int i = 0; i < expectedTokenSequences.length; i++) {
130       if (maxSize < expectedTokenSequences[i].length) {
131         maxSize = expectedTokenSequences[i].length;
132       }
133       for (int j = 0; j < expectedTokenSequences[i].length; j++) {
134         expected += tokenImage[expectedTokenSequences[i][j]] + " ";
135       }
136       if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
137         expected += "...";
138       }
139       expected += eol + "    ";
140     }
141     String retval = "Encountered \"";
142     Token tok = currentToken.next;
143     for (int i = 0; i < maxSize; i++) {
144       if (i != 0) retval += " ";
145       if (tok.kind == 0) {
146         retval += tokenImage[0];
147         break;
148       }
149       retval += add_escapes(tok.image);
150       tok = tok.next;
151     }
152     retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn + "." + eol;
153     if (expectedTokenSequences.length == 1) {
154       retval += "Was expecting:" + eol + "    ";
155     } else {
156       retval += "Was expecting one of:" + eol + "    ";
157     }
158     retval += expected;
159     return retval;
160   }
161 
162   /**
163    * The end of line string for this machine.
164    */
165   protected String eol = System.getProperty("line.separator", "\n");
166 
167   /**
168    * Used to convert raw characters to their escaped version
169    * when these raw version cannot be used as part of an ASCII
170    * string literal.
171    */
172   protected String add_escapes(String str) {
173       StringBuffer retval = new StringBuffer();
174       char ch;
175       for (int i = 0; i < str.length(); i++) {
176         switch (str.charAt(i))
177         {
178            case 0 :
179               continue;
180            case '\b':
181               retval.append("\\b");
182               continue;
183            case '\t':
184               retval.append("\\t");
185               continue;
186            case '\n':
187               retval.append("\\n");
188               continue;
189            case '\f':
190               retval.append("\\f");
191               continue;
192            case '\r':
193               retval.append("\\r");
194               continue;
195            case '\"':
196               retval.append("\\\"");
197               continue;
198            case '\'':
199               retval.append("\\\'");
200               continue;
201            case '\\':
202               retval.append("\\\\");
203               continue;
204            default:
205               if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
206                  String s = "0000" + Integer.toString(ch, 16);
207                  retval.append("\\u" + s.substring(s.length() - 4, s.length()));
208               } else {
209                  retval.append(ch);
210               }
211               continue;
212         }
213       }
214       return retval.toString();
215    }
216 
217 }