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| org.apache.commons.jexl.parser.ParseException |
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| 1 | /* |
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| 2 | * Copyright 2002-2006 The Apache Software Foundation. |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 2.1 */ |
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| 17 | package org.apache.commons.jexl.parser; |
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| 18 | ||
| 19 | /** |
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| 20 | * This exception is thrown when parse errors are encountered. You can |
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| 21 | * explicitly create objects of this exception type by calling the method |
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| 22 | * generateParseException in the generated parser. |
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| 23 | * |
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| 24 | * You can modify this class to customize your error reporting mechanisms so |
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| 25 | * long as you retain the public fields. |
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| 26 | */ |
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| 27 | public class ParseException extends Exception { |
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| 28 | ||
| 29 | /** serialization version id jdk13 generated. */ |
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| 30 | static final long serialVersionUID = 654626477565941968L; |
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| 31 | ||
| 32 | /** |
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| 33 | * This constructor is used by the method "generateParseException" in the |
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| 34 | * generated parser. Calling this constructor generates a new object of this |
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| 35 | * type with the fields "currentToken", "expectedTokenSequences", and |
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| 36 | * "tokenImage" set. The boolean flag "specialConstructor" is also set to |
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| 37 | * true to indicate that this constructor was used to create this object. |
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| 38 | * This constructor calls its super class with the empty string to force the |
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| 39 | * "toString" method of parent class "Throwable" to print the error message |
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| 40 | * in the form: ParseException: (result of getMessage) |
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| 41 | */ |
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| 42 | public ParseException(Token currentTokenVal, int[][] expectedTokenSequencesVal, String[] tokenImageVal) { |
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| 43 | 3 | super(""); |
| 44 | 3 | specialConstructor = true; |
| 45 | 3 | currentToken = currentTokenVal; |
| 46 | 3 | expectedTokenSequences = expectedTokenSequencesVal; |
| 47 | 3 | tokenImage = tokenImageVal; |
| 48 | 3 | } |
| 49 | ||
| 50 | /** |
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| 51 | * The following constructors are for use by you for whatever purpose you |
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| 52 | * can think of. Constructing the exception in this manner makes the |
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| 53 | * exception behave in the normal way - i.e., as documented in the class |
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| 54 | * "Throwable". The fields "errorToken", "expectedTokenSequences", and |
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| 55 | * "tokenImage" do not contain relevant information. The JavaCC generated |
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| 56 | * code does not use these constructors. |
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| 57 | */ |
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| 58 | ||
| 59 | public ParseException() { |
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| 60 | 0 | super(); |
| 61 | 0 | specialConstructor = false; |
| 62 | 0 | } |
| 63 | ||
| 64 | public ParseException(String message) { |
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| 65 | 3 | super(message); |
| 66 | 3 | specialConstructor = false; |
| 67 | 3 | } |
| 68 | ||
| 69 | /** |
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| 70 | * This variable determines which constructor was used to create this object |
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| 71 | * and thereby affects the semantics of the "getMessage" method (see below). |
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| 72 | */ |
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| 73 | protected boolean specialConstructor; |
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| 74 | ||
| 75 | /** |
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| 76 | * This is the last token that has been consumed successfully. If this |
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| 77 | * object has been created due to a parse error, the token followng this |
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| 78 | * token will (therefore) be the first error token. |
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| 79 | */ |
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| 80 | public Token currentToken; |
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| 81 | ||
| 82 | /** |
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| 83 | * Each entry in this array is an array of integers. Each array of integers |
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| 84 | * represents a sequence of tokens (by their ordinal values) that is |
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| 85 | * expected at this point of the parse. |
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| 86 | */ |
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| 87 | public int[][] expectedTokenSequences; |
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| 88 | ||
| 89 | /** |
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| 90 | * This is a reference to the "tokenImage" array of the generated parser |
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| 91 | * within which the parse error occurred. This array is defined in the |
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| 92 | * generated ...Constants interface. |
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| 93 | */ |
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| 94 | public String[] tokenImage; |
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| 95 | ||
| 96 | /** |
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| 97 | * This method has the standard behavior when this object has been created |
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| 98 | * using the standard constructors. Otherwise, it uses "currentToken" and |
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| 99 | * "expectedTokenSequences" to generate a parse error message and returns |
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| 100 | * it. If this object has been created due to a parse error, and you do not |
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| 101 | * catch it (it gets thrown from the parser), then this method is called |
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| 102 | * during the printing of the final stack trace, and hence the correct error |
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| 103 | * message gets displayed. |
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| 104 | */ |
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| 105 | public String getMessage() { |
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| 106 | 0 | if (!specialConstructor) { |
| 107 | 0 | return super.getMessage(); |
| 108 | } |
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| 109 | 0 | String expected = ""; |
| 110 | 0 | int maxSize = 0; |
| 111 | 0 | for (int i = 0; i < expectedTokenSequences.length; i++) { |
| 112 | 0 | if (maxSize < expectedTokenSequences[i].length) { |
| 113 | 0 | maxSize = expectedTokenSequences[i].length; |
| 114 | } |
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| 115 | 0 | for (int j = 0; j < expectedTokenSequences[i].length; j++) { |
| 116 | 0 | expected += tokenImage[expectedTokenSequences[i][j]] + " "; |
| 117 | } |
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| 118 | 0 | if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { |
| 119 | 0 | expected += "..."; |
| 120 | } |
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| 121 | 0 | expected += eol + " "; |
| 122 | } |
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| 123 | 0 | String retval = "Encountered \""; |
| 124 | 0 | Token tok = currentToken.next; |
| 125 | 0 | for (int i = 0; i < maxSize; i++) { |
| 126 | 0 | if (i != 0) |
| 127 | 0 | retval += " "; |
| 128 | 0 | if (tok.kind == 0) { |
| 129 | 0 | retval += tokenImage[0]; |
| 130 | 0 | break; |
| 131 | } |
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| 132 | 0 | retval += add_escapes(tok.image); |
| 133 | 0 | tok = tok.next; |
| 134 | } |
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| 135 | 0 | retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; |
| 136 | 0 | retval += "." + eol; |
| 137 | 0 | if (expectedTokenSequences.length == 1) { |
| 138 | 0 | retval += "Was expecting:" + eol + " "; |
| 139 | } else { |
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| 140 | 0 | retval += "Was expecting one of:" + eol + " "; |
| 141 | } |
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| 142 | 0 | retval += expected; |
| 143 | 0 | return retval; |
| 144 | } |
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| 145 | ||
| 146 | /** |
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| 147 | * The end of line string for this machine. |
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| 148 | */ |
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| 149 | 6 | protected String eol = System.getProperty("line.separator", "\n"); |
| 150 | ||
| 151 | /** |
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| 152 | * Used to convert raw characters to their escaped version when these raw |
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| 153 | * version cannot be used as part of an ASCII string literal. |
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| 154 | */ |
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| 155 | protected String add_escapes(String str) { |
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| 156 | 0 | StringBuffer retval = new StringBuffer(); |
| 157 | char ch; |
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| 158 | 0 | for (int i = 0; i < str.length(); i++) { |
| 159 | 0 | switch (str.charAt(i)) { |
| 160 | case 0: |
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| 161 | 0 | continue; |
| 162 | case '\b': |
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| 163 | 0 | retval.append("\\b"); |
| 164 | 0 | continue; |
| 165 | case '\t': |
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| 166 | 0 | retval.append("\\t"); |
| 167 | 0 | continue; |
| 168 | case '\n': |
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| 169 | 0 | retval.append("\\n"); |
| 170 | 0 | continue; |
| 171 | case '\f': |
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| 172 | 0 | retval.append("\\f"); |
| 173 | 0 | continue; |
| 174 | case '\r': |
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| 175 | 0 | retval.append("\\r"); |
| 176 | 0 | continue; |
| 177 | case '\"': |
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| 178 | 0 | retval.append("\\\""); |
| 179 | 0 | continue; |
| 180 | case '\'': |
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| 181 | 0 | retval.append("\\\'"); |
| 182 | 0 | continue; |
| 183 | case '\\': |
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| 184 | 0 | retval.append("\\\\"); |
| 185 | 0 | continue; |
| 186 | default: |
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| 187 | 0 | if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { |
| 188 | 0 | String s = "0000" + Integer.toString(ch, 16); |
| 189 | 0 | retval.append("\\u").append(s.substring(s.length() - 4, s.length())); |
| 190 | } else { |
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| 191 | 0 | retval.append(ch); |
| 192 | } |
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| 193 | continue; |
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| 194 | } |
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| 195 | } |
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| 196 | 0 | return retval.toString(); |
| 197 | } |
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| 198 | ||
| 199 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |