ParseException


1   /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
2   /*-----------------------------------------------------------------------------
3    * ConfigParser (DO NOT EDIT - MACHINE GENERATED)
4    *   JavaCC-generated parser for processing a Multiserver
5    *   standard configuration file.
6    *
7    * !! DO NOT EDIT !! DO NOT EDIT !! DO NOT EDIT !! DO NOT EDIT !!
8    *
9    * There.  Now that I've gotten your attention...
10   *
11   * DO NOT EDIT THIS FILE.  THIS IS NOT A SOURCE FILE.
12   * THIS IS A MACHINE GENERATED FILE -- EDIT 'ConfigParser.jj' INSTEAD.
13   *
14   *-----------------------------------------------------------------------------
15   *-----------------------------------------------------------------------------
16   */
17  package com.lutris.util;
18  
19  /**
20   * This exception is thrown when parse errors are encountered.
21   * You can explicitly create objects of this exception type by
22   * calling the method generateParseException in the generated
23   * parser.
24   *
25   * You can modify this class to customize your error reporting
26   * mechanisms so long as you retain the public fields.
27   */
28  public class ParseException extends Exception   {
29  
30    /**
31     * This constructor is used by the method "generateParseException"
32     * in the generated parser.  Calling this constructor generates
33     * a new object of this type with the fields "currentToken",
34     * "expectedTokenSequences", and "tokenImage" set.  The boolean
35     * flag "specialConstructor" is also set to true to indicate that
36     * this constructor was used to create this object.
37     * This constructor calls its super class with the empty string
38     * to force the "toString" method of parent class "Throwable" to
39     * print the error message in the form:
40     *     ParseException: <result of getMessage>
41     */
42    public ParseException(Token currentTokenVal,
43                          int[][] expectedTokenSequencesVal,
44                          String  [] tokenImageVal
45                         )
46    {
47      super("");
48      specialConstructor = true;
49      currentToken = currentTokenVal;
50      expectedTokenSequences = expectedTokenSequencesVal;
51      tokenImage = tokenImageVal;
52    }
53  
54    /**
55     * The following constructors are for use by you for whatever
56     * purpose you can think of.  Constructing the exception in this
57     * manner makes the exception behave in the normal way - i.e., as
58     * documented in the class "Throwable".  The fields "errorToken",
59     * "expectedTokenSequences", and "tokenImage" do not contain
60     * relevant information.  The JavaCC generated code does not use
61     * these constructors.
62     */
63  
64    public ParseException() {
65      super();
66      specialConstructor = false;
67    }
68  
69    public ParseException(String   message) {
70      super(message);
71      specialConstructor = false;
72    }
73  
74    /**
75     * This variable determines which constructor was used to create
76     * this object and thereby affects the semantics of the
77     * "getMessage" method (see below).
78     */
79    protected boolean specialConstructor;
80  
81    /**
82     * This is the last token that has been consumed successfully.  If
83     * this object has been created due to a parse error, the token
84     * followng this token will (therefore) be the first error token.
85     */
86    public Token currentToken;
87  
88    /**
89     * Each entry in this array is an array of integers.  Each array
90     * of integers represents a sequence of tokens (by their ordinal
91     * values) that is expected at this point of the parse.
92     */
93    public int[][] expectedTokenSequences;
94  
95    /**
96     * This is a reference to the "tokenImage" array of the generated
97     * parser within which the parse error occurred.  This array is
98     * defined in the generated ...Constants interface.
99     */
100   public String  [] tokenImage;
101 
102   /**
103    * This method has the standard behavior when this object has been
104    * created using the standard constructors.  Otherwise, it uses
105    * "currentToken" and "expectedTokenSequences" to generate a parse
106    * error message and returns it.  If this object has been created
107    * due to a parse error, and you do not catch it (it gets thrown
108    * from the parser), then this method is called during the printing
109    * of the final stack trace, and hence the correct error message
110    * gets displayed.
111    */
112   public String   getMessage() {
113     if (!specialConstructor) {
114       return super.getMessage();
115     }
116     String   expected = "";
117     int maxSize = 0;
118     for (int i = 0; i < expectedTokenSequences.length; i++) {
119       if (maxSize < expectedTokenSequences[i].length) {
120         maxSize = expectedTokenSequences[i].length;
121       }
122       for (int j = 0; j < expectedTokenSequences[i].length; j++) {
123         expected += tokenImage[expectedTokenSequences[i][j]] + " ";
124       }
125       if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
126         expected += "...";
127       }
128       expected += eol + "    ";
129     }
130     String   retval = "Encountered \"";
131     Token tok = currentToken.next;
132     for (int i = 0; i < maxSize; i++) {
133       if (i != 0) retval += " ";
134       if (tok.kind == 0) {
135         retval += tokenImage[0];
136         break;
137       }
138       retval += add_escapes(tok.image);
139       tok = tok.next; 
140     }
141     retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
142     retval += "." + eol;
143     if (expectedTokenSequences.length == 1) {
144       retval += "Was expecting:" + eol + "    ";
145     } else {
146       retval += "Was expecting one of:" + eol + "    ";
147     }
148     retval += expected;
149     return retval;
150   }
151 
152   /**
153    * The end of line string for this machine.
154    */
155   protected String   eol = System.getProperty("line.separator", "\n");
156  
157   /**
158    * Used to convert raw characters to their escaped version
159    * when these raw version cannot be used as part of an ASCII
160    * string literal.
161    */
162   protected String   add_escapes(String   str) {
163       StringBuffer   retval = new StringBuffer  ();
164       char ch;
165       for (int i = 0; i < str.length(); i++) {
166         switch (str.charAt(i))
167         {
168            case 0 :
169               continue;
170            case '\b':
171               retval.append("\\b");
172               continue;
173            case '\t':
174               retval.append("\\t");
175               continue;
176            case '\n':
177               retval.append("\\n");
178               continue;
179            case '\f':
180               retval.append("\\f");
181               continue;
182            case '\r':
183               retval.append("\\r");
184               continue;
185            case '\"':
186               retval.append("\\\"");
187               continue;
188            case '\'':
189               retval.append("\\\'");
190               continue;
191            case '\\':
192               retval.append("\\\\");
193               continue;
194            default:
195               if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
196                  String   s = "0000" + Integer.toString(ch, 16);
197                  retval.append("\\u" + s.substring(s.length() - 4, s.length()));
198               } else {
199                  retval.append(ch);
200               }
201               continue;
202         }
203       }
204       return retval.toString();
205    }
206 
207 }
208
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