[6785] | 1 | /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */ |
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| 2 | /**************************************************************** |
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| 3 | * Licensed to the Apache Software Foundation (ASF) under one * |
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| 4 | * or more contributor license agreements. See the NOTICE file * |
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| 5 | * distributed with this work for additional information * |
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| 6 | * regarding copyright ownership. The ASF licenses this file * |
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| 7 | * to you under the Apache License, Version 2.0 (the * |
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| 8 | * "License"); you may not use this file except in compliance * |
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| 9 | * with the License. You may obtain a copy of the License at * |
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| 10 | * * |
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| 11 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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| 12 | * * |
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| 13 | * Unless required by applicable law or agreed to in writing, * |
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| 14 | * software distributed under the License is distributed on an * |
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| 15 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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| 16 | * KIND, either express or implied. See the License for the * |
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| 17 | * specific language governing permissions and limitations * |
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| 18 | * under the License. * |
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| 19 | ****************************************************************/ |
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| 20 | package org.apache.james.mime4j.field.contentdisposition.parser; |
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| 21 | |
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| 22 | /** |
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| 23 | * This exception is thrown when parse errors are encountered. |
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| 24 | * You can explicitly create objects of this exception type by |
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| 25 | * calling the method generateParseException in the generated |
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| 26 | * parser. |
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| 27 | * |
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| 28 | * Changes for Mime4J: |
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| 29 | * extends org.apache.james.mime4j.field.ParseException |
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| 30 | * added serialVersionUID |
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| 31 | * added constructor ParseException(Throwable) |
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| 32 | * default detail message is "Cannot parse field" |
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| 33 | */ |
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| 34 | public class ParseException extends org.apache.james.mime4j.dom.field.ParseException { |
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| 35 | |
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| 36 | private static final long serialVersionUID = 1L; |
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| 37 | |
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| 38 | /** |
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| 39 | * This constructor is used by the method "generateParseException" |
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| 40 | * in the generated parser. Calling this constructor generates |
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| 41 | * a new object of this type with the fields "currentToken", |
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| 42 | * "expectedTokenSequences", and "tokenImage" set. The boolean |
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| 43 | * flag "specialConstructor" is also set to true to indicate that |
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| 44 | * this constructor was used to create this object. |
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| 45 | * This constructor calls its super class with the empty string |
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| 46 | * to force the "toString" method of parent class "Throwable" to |
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| 47 | * print the error message in the form: |
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| 48 | * ParseException: <result of getMessage> |
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| 49 | */ |
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| 50 | public ParseException(Token currentTokenVal, |
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| 51 | int[][] expectedTokenSequencesVal, |
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| 52 | String[] tokenImageVal |
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| 53 | ) |
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| 54 | { |
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| 55 | super(""); |
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| 56 | specialConstructor = true; |
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| 57 | currentToken = currentTokenVal; |
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| 58 | expectedTokenSequences = expectedTokenSequencesVal; |
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| 59 | tokenImage = tokenImageVal; |
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| 60 | } |
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| 61 | |
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| 62 | /** |
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| 63 | * The following constructors are for use by you for whatever |
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| 64 | * purpose you can think of. Constructing the exception in this |
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| 65 | * manner makes the exception behave in the normal way - i.e., as |
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| 66 | * documented in the class "Throwable". The fields "errorToken", |
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| 67 | * "expectedTokenSequences", and "tokenImage" do not contain |
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| 68 | * relevant information. The JavaCC generated code does not use |
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| 69 | * these constructors. |
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| 70 | */ |
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| 71 | |
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| 72 | public ParseException() { |
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| 73 | super("Cannot parse field"); |
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| 74 | specialConstructor = false; |
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| 75 | } |
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| 76 | |
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| 77 | public ParseException(Throwable cause) { |
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| 78 | super(cause); |
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| 79 | specialConstructor = false; |
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| 80 | } |
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| 81 | |
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| 82 | public ParseException(String message) { |
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| 83 | super(message); |
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| 84 | specialConstructor = false; |
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| 85 | } |
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| 86 | |
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| 87 | /** |
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| 88 | * This variable determines which constructor was used to create |
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| 89 | * this object and thereby affects the semantics of the |
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| 90 | * "getMessage" method (see below). |
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| 91 | */ |
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| 92 | protected boolean specialConstructor; |
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| 93 | |
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| 94 | /** |
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| 95 | * This is the last token that has been consumed successfully. If |
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| 96 | * this object has been created due to a parse error, the token |
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| 97 | * followng this token will (therefore) be the first error token. |
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| 98 | */ |
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| 99 | public Token currentToken; |
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| 100 | |
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| 101 | /** |
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| 102 | * Each entry in this array is an array of integers. Each array |
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| 103 | * of integers represents a sequence of tokens (by their ordinal |
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| 104 | * values) that is expected at this point of the parse. |
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| 105 | */ |
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| 106 | public int[][] expectedTokenSequences; |
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| 107 | |
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| 108 | /** |
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| 109 | * This is a reference to the "tokenImage" array of the generated |
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| 110 | * parser within which the parse error occurred. This array is |
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| 111 | * defined in the generated ...Constants interface. |
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| 112 | */ |
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| 113 | public String[] tokenImage; |
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| 114 | |
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| 115 | /** |
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| 116 | * This method has the standard behavior when this object has been |
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| 117 | * created using the standard constructors. Otherwise, it uses |
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| 118 | * "currentToken" and "expectedTokenSequences" to generate a parse |
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| 119 | * error message and returns it. If this object has been created |
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| 120 | * due to a parse error, and you do not catch it (it gets thrown |
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| 121 | * from the parser), then this method is called during the printing |
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| 122 | * of the final stack trace, and hence the correct error message |
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| 123 | * gets displayed. |
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| 124 | */ |
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| 125 | public String getMessage() { |
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| 126 | if (!specialConstructor) { |
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| 127 | return super.getMessage(); |
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| 128 | } |
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| 129 | StringBuffer expected = new StringBuffer(); |
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| 130 | int maxSize = 0; |
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| 131 | for (int i = 0; i < expectedTokenSequences.length; i++) { |
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| 132 | if (maxSize < expectedTokenSequences[i].length) { |
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| 133 | maxSize = expectedTokenSequences[i].length; |
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| 134 | } |
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| 135 | for (int j = 0; j < expectedTokenSequences[i].length; j++) { |
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| 136 | expected.append(tokenImage[expectedTokenSequences[i][j]]).append(" "); |
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| 137 | } |
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| 138 | if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { |
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| 139 | expected.append("..."); |
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| 140 | } |
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| 141 | expected.append(eol).append(" "); |
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| 142 | } |
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| 143 | String retval = "Encountered \""; |
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| 144 | Token tok = currentToken.next; |
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| 145 | for (int i = 0; i < maxSize; i++) { |
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| 146 | if (i != 0) retval += " "; |
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| 147 | if (tok.kind == 0) { |
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| 148 | retval += tokenImage[0]; |
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| 149 | break; |
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| 150 | } |
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| 151 | retval += add_escapes(tok.image); |
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| 152 | tok = tok.next; |
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| 153 | } |
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| 154 | retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; |
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| 155 | retval += "." + eol; |
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| 156 | if (expectedTokenSequences.length == 1) { |
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| 157 | retval += "Was expecting:" + eol + " "; |
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| 158 | } else { |
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| 159 | retval += "Was expecting one of:" + eol + " "; |
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| 160 | } |
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| 161 | retval += expected.toString(); |
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| 162 | return retval; |
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| 163 | } |
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| 164 | |
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| 165 | /** |
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| 166 | * The end of line string for this machine. |
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| 167 | */ |
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| 168 | protected String eol = System.getProperty("line.separator", "\n"); |
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| 169 | |
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| 170 | /** |
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| 171 | * Used to convert raw characters to their escaped version |
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| 172 | * when these raw version cannot be used as part of an ASCII |
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| 173 | * string literal. |
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| 174 | */ |
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| 175 | protected String add_escapes(String str) { |
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| 176 | StringBuffer retval = new StringBuffer(); |
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| 177 | char ch; |
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| 178 | for (int i = 0; i < str.length(); i++) { |
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| 179 | switch (str.charAt(i)) |
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| 180 | { |
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| 181 | case 0 : |
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| 182 | continue; |
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| 183 | case '\b': |
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| 184 | retval.append("\\b"); |
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| 185 | continue; |
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| 186 | case '\t': |
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| 187 | retval.append("\\t"); |
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| 188 | continue; |
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| 189 | case '\n': |
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| 190 | retval.append("\\n"); |
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| 191 | continue; |
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| 192 | case '\f': |
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| 193 | retval.append("\\f"); |
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| 194 | continue; |
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| 195 | case '\r': |
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| 196 | retval.append("\\r"); |
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| 197 | continue; |
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| 198 | case '\"': |
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| 199 | retval.append("\\\""); |
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| 200 | continue; |
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| 201 | case '\'': |
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| 202 | retval.append("\\\'"); |
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| 203 | continue; |
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| 204 | case '\\': |
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| 205 | retval.append("\\\\"); |
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| 206 | continue; |
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| 207 | default: |
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| 208 | if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { |
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| 209 | String s = "0000" + Integer.toString(ch, 16); |
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| 210 | retval.append("\\u" + s.substring(s.length() - 4, s.length())); |
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| 211 | } else { |
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| 212 | retval.append(ch); |
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| 213 | } |
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| 214 | continue; |
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| 215 | } |
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| 216 | } |
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| 217 | return retval.toString(); |
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| 218 | } |
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| 219 | |
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| 220 | } |
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