001/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */
002/* JavaCCOptions:KEEP_LINE_COL=null */
003/**
004 * Licensed to the Apache Software Foundation (ASF) under one or more
005 * contributor license agreements.  See the NOTICE file distributed with
006 * this work for additional information regarding copyright ownership.
007 * The ASF licenses this file to You under the Apache License, Version 2.0
008 * (the "License"); you may not use this file except in compliance with
009 * the License.  You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020package org.apache.activemq.selector;
021
022/**
023 * This exception is thrown when parse errors are encountered.
024 * You can explicitly create objects of this exception type by
025 * calling the method generateParseException in the generated
026 * parser.
027 *
028 * You can modify this class to customize your error reporting
029 * mechanisms so long as you retain the public fields.
030 */
031public class ParseException extends Exception {
032
033  /**
034   * The version identifier for this Serializable class.
035   * Increment only if the <i>serialized</i> form of the
036   * class changes.
037   */
038  private static final long serialVersionUID = 1L;
039
040  /**
041   * This constructor is used by the method "generateParseException"
042   * in the generated parser.  Calling this constructor generates
043   * a new object of this type with the fields "currentToken",
044   * "expectedTokenSequences", and "tokenImage" set.
045   */
046  public ParseException(Token currentTokenVal,
047                        int[][] expectedTokenSequencesVal,
048                        String[] tokenImageVal
049                       )
050  {
051    super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
052    currentToken = currentTokenVal;
053    expectedTokenSequences = expectedTokenSequencesVal;
054    tokenImage = tokenImageVal;
055  }
056
057  /**
058   * The following constructors are for use by you for whatever
059   * purpose you can think of.  Constructing the exception in this
060   * manner makes the exception behave in the normal way - i.e., as
061   * documented in the class "Throwable".  The fields "errorToken",
062   * "expectedTokenSequences", and "tokenImage" do not contain
063   * relevant information.  The JavaCC generated code does not use
064   * these constructors.
065   */
066
067  public ParseException() {
068    super();
069  }
070
071  /** Constructor with message. */
072  public ParseException(String message) {
073    super(message);
074  }
075
076
077  /**
078   * This is the last token that has been consumed successfully.  If
079   * this object has been created due to a parse error, the token
080   * followng this token will (therefore) be the first error token.
081   */
082  public Token currentToken;
083
084  /**
085   * Each entry in this array is an array of integers.  Each array
086   * of integers represents a sequence of tokens (by their ordinal
087   * values) that is expected at this point of the parse.
088   */
089  public int[][] expectedTokenSequences;
090
091  /**
092   * This is a reference to the "tokenImage" array of the generated
093   * parser within which the parse error occurred.  This array is
094   * defined in the generated ...Constants interface.
095   */
096  public String[] tokenImage;
097
098  /**
099   * It uses "currentToken" and "expectedTokenSequences" to generate a parse
100   * error message and returns it.  If this object has been created
101   * due to a parse error, and you do not catch it (it gets thrown
102   * from the parser) the correct error message
103   * gets displayed.
104   */
105  private static String initialise(Token currentToken,
106                           int[][] expectedTokenSequences,
107                           String[] tokenImage) {
108    String eol = System.getProperty("line.separator", "\n");
109    StringBuffer expected = new StringBuffer();
110    int maxSize = 0;
111    for (int i = 0; i < expectedTokenSequences.length; i++) {
112      if (maxSize < expectedTokenSequences[i].length) {
113        maxSize = expectedTokenSequences[i].length;
114      }
115      for (int j = 0; j < expectedTokenSequences[i].length; j++) {
116        expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
117      }
118      if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
119        expected.append("...");
120      }
121      expected.append(eol).append("    ");
122    }
123    String retval = "Encountered \"";
124    Token tok = currentToken.next;
125    for (int i = 0; i < maxSize; i++) {
126      if (i != 0) retval += " ";
127      if (tok.kind == 0) {
128        retval += tokenImage[0];
129        break;
130      }
131      retval += " " + tokenImage[tok.kind];
132      retval += " \"";
133      retval += add_escapes(tok.image);
134      retval += " \"";
135      tok = tok.next;
136    }
137    retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
138    retval += "." + eol;
139    if (expectedTokenSequences.length == 1) {
140      retval += "Was expecting:" + eol + "    ";
141    } else {
142      retval += "Was expecting one of:" + eol + "    ";
143    }
144    retval += expected.toString();
145    return retval;
146  }
147
148  /**
149   * The end of line string for this machine.
150   */
151  protected String eol = System.getProperty("line.separator", "\n");
152
153  /**
154   * Used to convert raw characters to their escaped version
155   * when these raw version cannot be used as part of an ASCII
156   * string literal.
157   */
158  static String add_escapes(String str) {
159      StringBuffer retval = new StringBuffer();
160      char ch;
161      for (int i = 0; i < str.length(); i++) {
162        switch (str.charAt(i))
163        {
164           case 0 :
165              continue;
166           case '\b':
167              retval.append("\\b");
168              continue;
169           case '\t':
170              retval.append("\\t");
171              continue;
172           case '\n':
173              retval.append("\\n");
174              continue;
175           case '\f':
176              retval.append("\\f");
177              continue;
178           case '\r':
179              retval.append("\\r");
180              continue;
181           case '\"':
182              retval.append("\\\"");
183              continue;
184           case '\'':
185              retval.append("\\\'");
186              continue;
187           case '\\':
188              retval.append("\\\\");
189              continue;
190           default:
191              if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
192                 String s = "0000" + Integer.toString(ch, 16);
193                 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
194              } else {
195                 retval.append(ch);
196              }
197              continue;
198        }
199      }
200      return retval.toString();
201   }
202
203}
204/* JavaCC - OriginalChecksum=b9214f06b2c752c7be8d5d26aa9e434d (do not edit this line) */