[193] | 1 | /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */ |
---|
| 2 | package com.framsticks.framclipse.internal.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 | specialConstructor = true; |
---|
| 34 | currentToken = currentTokenVal; |
---|
| 35 | 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 | |
---|
| 49 | public ParseException() { |
---|
| 50 | super(); |
---|
| 51 | specialConstructor = false; |
---|
| 52 | } |
---|
| 53 | |
---|
| 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 | */ |
---|
| 64 | protected boolean specialConstructor; |
---|
| 65 | |
---|
| 66 | /** |
---|
| 67 | * 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 | public Token currentToken; |
---|
| 72 | |
---|
| 73 | /** |
---|
| 74 | * Each entry in this array is an array of integers. Each array |
---|
| 75 | * 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 | |
---|
| 80 | /** |
---|
| 81 | * This is a reference to the "tokenImage" array of the generated |
---|
| 82 | * parser within which the parse error occurred. This array is |
---|
| 83 | * defined in the generated ...Constants interface. |
---|
| 84 | */ |
---|
| 85 | public String[] tokenImage; |
---|
| 86 | |
---|
| 87 | /** |
---|
| 88 | * This method has the standard behavior when this object has been |
---|
| 89 | * created using the standard constructors. Otherwise, it uses |
---|
| 90 | * "currentToken" and "expectedTokenSequences" to generate a parse |
---|
| 91 | * error message and returns it. If this object has been created |
---|
| 92 | * 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 | } |
---|