| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ParseException |
|
| 5.2;5.2 |
| 1 | /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */ | |
| 2 | package org.webslinger.ext.wiki.parser; | |
| 3 | ||
| 4 | /** | |
| 5 | * This exception is thrown when parse errors are encountered. | |
| 6 | * You can explicitly create objects of this exception type by | |
| 7 | * calling the method generateParseException in the generated | |
| 8 | * parser. | |
| 9 | * | |
| 10 | * You can modify this class to customize your error reporting | |
| 11 | * mechanisms so long as you retain the public fields. | |
| 12 | */ | |
| 13 | public class ParseException extends Exception { | |
| 14 | ||
| 15 | /** | |
| 16 | * This constructor is used by the method "generateParseException" | |
| 17 | * in the generated parser. Calling this constructor generates | |
| 18 | * a new object of this type with the fields "currentToken", | |
| 19 | * "expectedTokenSequences", and "tokenImage" set. The boolean | |
| 20 | * flag "specialConstructor" is also set to true to indicate that | |
| 21 | * this constructor was used to create this object. | |
| 22 | * This constructor calls its super class with the empty string | |
| 23 | * to force the "toString" method of parent class "Throwable" to | |
| 24 | * print the error message in the form: | |
| 25 | * ParseException: <result of getMessage> | |
| 26 | */ | |
| 27 | public ParseException(Token currentTokenVal, | |
| 28 | int[][] expectedTokenSequencesVal, | |
| 29 | String[] tokenImageVal | |
| 30 | ) | |
| 31 | { | |
| 32 | super(""); | |
| 33 | 0 | specialConstructor = true; |
| 34 | 0 | currentToken = currentTokenVal; |
| 35 | 0 | expectedTokenSequences = expectedTokenSequencesVal; |
| 36 | tokenImage = tokenImageVal; | |
| 37 | } | |
| 38 | ||
| 39 | /** | |
| 40 | * The following constructors are for use by you for whatever | |
| 41 | * purpose you can think of. Constructing the exception in this | |
| 42 | * manner makes the exception behave in the normal way - i.e., as | |
| 43 | * documented in the class "Throwable". The fields "errorToken", | |
| 44 | * "expectedTokenSequences", and "tokenImage" do not contain | |
| 45 | * relevant information. The JavaCC generated code does not use | |
| 46 | * these constructors. | |
| 47 | */ | |
| 48 | 0 | |
| 49 | 0 | public ParseException() { |
| 50 | super(); | |
| 51 | specialConstructor = false; | |
| 52 | 0 | } |
| 53 | 0 | |
| 54 | public ParseException(String message) { | |
| 55 | super(message); | |
| 56 | specialConstructor = false; | |
| 57 | } | |
| 58 | ||
| 59 | /** | |
| 60 | * This variable determines which constructor was used to create | |
| 61 | * this object and thereby affects the semantics of the | |
| 62 | * "getMessage" method (see below). | |
| 63 | 0 | */ |
| 64 | protected boolean specialConstructor; | |
| 65 | ||
| 66 | /** | |
| 67 | 0 | * This is the last token that has been consumed successfully. If |
| 68 | * this object has been created due to a parse error, the token | |
| 69 | * followng this token will (therefore) be the first error token. | |
| 70 | */ | |
| 71 | 0 | public Token currentToken; |
| 72 | ||
| 73 | /** | |
| 74 | * Each entry in this array is an array of integers. Each array | |
| 75 | 0 | * of integers represents a sequence of tokens (by their ordinal |
| 76 | * values) that is expected at this point of the parse. | |
| 77 | */ | |
| 78 | public int[][] expectedTokenSequences; | |
| 79 | 0 | |
| 80 | 0 | /** |
| 81 | 0 | * This is a reference to the "tokenImage" array of the generated |
| 82 | 0 | * parser within which the parse error occurred. This array is |
| 83 | 0 | * defined in the generated ...Constants interface. |
| 84 | 0 | */ |
| 85 | 0 | public String[] tokenImage; |
| 86 | ||
| 87 | 0 | /** |
| 88 | 0 | * This method has the standard behavior when this object has been |
| 89 | * created using the standard constructors. Otherwise, it uses | |
| 90 | 0 | * "currentToken" and "expectedTokenSequences" to generate a parse |
| 91 | 0 | * error message and returns it. If this object has been created |
| 92 | 0 | * due to a parse error, and you do not catch it (it gets thrown |
| 93 | * from the parser), then this method is called during the printing | |
| 94 | * of the final stack trace, and hence the correct error message | |
| 95 | * gets displayed. | |
| 96 | */ | |
| 97 | public String getMessage() { | |
| 98 | if (!specialConstructor) { | |
| 99 | return super.getMessage(); | |
| 100 | } | |
| 101 | StringBuffer expected = new StringBuffer(); | |
| 102 | int maxSize = 0; | |
| 103 | for (int i = 0; i < expectedTokenSequences.length; i++) { | |
| 104 | if (maxSize < expectedTokenSequences[i].length) { | |
| 105 | maxSize = expectedTokenSequences[i].length; | |
| 106 | } | |
| 107 | for (int j = 0; j < expectedTokenSequences[i].length; j++) { | |
| 108 | expected.append(tokenImage[expectedTokenSequences[i][j]]).append(" "); | |
| 109 | } | |
| 110 | if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { | |
| 111 | expected.append("..."); | |
| 112 | } | |
| 113 | expected.append(eol).append(" "); | |
| 114 | } | |
| 115 | String retval = "Encountered \""; | |
| 116 | Token tok = currentToken.next; | |
| 117 | for (int i = 0; i < maxSize; i++) { | |
| 118 | if (i != 0) retval += " "; | |
| 119 | if (tok.kind == 0) { | |
| 120 | retval += tokenImage[0]; | |
| 121 | break; | |
| 122 | } | |
| 123 | retval += add_escapes(tok.image); | |
| 124 | tok = tok.next; | |
| 125 | } | |
| 126 | retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; | |
| 127 | retval += "." + eol; | |
| 128 | if (expectedTokenSequences.length == 1) { | |
| 129 | retval += "Was expecting:" + eol + " "; | |
| 130 | } else { | |
| 131 | retval += "Was expecting one of:" + eol + " "; | |
| 132 | } | |
| 133 | retval += expected.toString(); | |
| 134 | return retval; | |
| 135 | } | |
| 136 | ||
| 137 | /** | |
| 138 | * The end of line string for this machine. | |
| 139 | */ | |
| 140 | protected String eol = System.getProperty("line.separator", "\n"); | |
| 141 | ||
| 142 | /** | |
| 143 | * Used to convert raw characters to their escaped version | |
| 144 | * when these raw version cannot be used as part of an ASCII | |
| 145 | * string literal. | |
| 146 | */ | |
| 147 | protected String add_escapes(String str) { | |
| 148 | StringBuffer retval = new StringBuffer(); | |
| 149 | char ch; | |
| 150 | for (int i = 0; i < str.length(); i++) { | |
| 151 | switch (str.charAt(i)) | |
| 152 | { | |
| 153 | case 0 : | |
| 154 | continue; | |
| 155 | case '\b': | |
| 156 | retval.append("\\b"); | |
| 157 | continue; | |
| 158 | case '\t': | |
| 159 | retval.append("\\t"); | |
| 160 | continue; | |
| 161 | case '\n': | |
| 162 | retval.append("\\n"); | |
| 163 | continue; | |
| 164 | case '\f': | |
| 165 | retval.append("\\f"); | |
| 166 | continue; | |
| 167 | case '\r': | |
| 168 | retval.append("\\r"); | |
| 169 | continue; | |
| 170 | case '\"': | |
| 171 | retval.append("\\\""); | |
| 172 | continue; | |
| 173 | case '\'': | |
| 174 | retval.append("\\\'"); | |
| 175 | continue; | |
| 176 | case '\\': | |
| 177 | retval.append("\\\\"); | |
| 178 | continue; | |
| 179 | default: | |
| 180 | if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { | |
| 181 | String s = "0000" + Integer.toString(ch, 16); | |
| 182 | retval.append("\\u" + s.substring(s.length() - 4, s.length())); | |
| 183 | } else { | |
| 184 | retval.append(ch); | |
| 185 | } | |
| 186 | continue; | |
| 187 | } | |
| 188 | } | |
| 189 | return retval.toString(); | |
| 190 | } | |
| 191 | ||
| 192 | } |