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| 1 | +/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 6.0 */ |
| 2 | +/* JavaCCOptions:KEEP_LINE_COL=null */ |
| 3 | +package parser; |
| 4 | + |
| 5 | +/** |
| 6 | + * This exception is thrown when parse errors are encountered. |
| 7 | + * You can explicitly create objects of this exception type by |
| 8 | + * calling the method generateParseException in the generated |
| 9 | + * parser. |
| 10 | + * |
| 11 | + * You can modify this class to customize your error reporting |
| 12 | + * mechanisms so long as you retain the public fields. |
| 13 | + */ |
| 14 | +public class ParseException extends Exception { |
| 15 | + |
| 16 | + /** |
| 17 | + * The version identifier for this Serializable class. |
| 18 | + * Increment only if the <i>serialized</i> form of the |
| 19 | + * class changes. |
| 20 | + */ |
| 21 | + private static final long serialVersionUID = 1L; |
| 22 | + |
| 23 | + /** |
| 24 | + * This constructor is used by the method "generateParseException" |
| 25 | + * in the generated parser. Calling this constructor generates |
| 26 | + * a new object of this type with the fields "currentToken", |
| 27 | + * "expectedTokenSequences", and "tokenImage" set. |
| 28 | + */ |
| 29 | + public ParseException(Token currentTokenVal, |
| 30 | + int[][] expectedTokenSequencesVal, |
| 31 | + String[] tokenImageVal |
| 32 | + ) |
| 33 | + { |
| 34 | + super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal)); |
| 35 | + currentToken = currentTokenVal; |
| 36 | + expectedTokenSequences = expectedTokenSequencesVal; |
| 37 | + tokenImage = tokenImageVal; |
| 38 | + } |
| 39 | + |
| 40 | + /** |
| 41 | + * The following constructors are for use by you for whatever |
| 42 | + * purpose you can think of. Constructing the exception in this |
| 43 | + * manner makes the exception behave in the normal way - i.e., as |
| 44 | + * documented in the class "Throwable". The fields "errorToken", |
| 45 | + * "expectedTokenSequences", and "tokenImage" do not contain |
| 46 | + * relevant information. The JavaCC generated code does not use |
| 47 | + * these constructors. |
| 48 | + */ |
| 49 | + |
| 50 | + public ParseException() { |
| 51 | + super(); |
| 52 | + } |
| 53 | + |
| 54 | + /** Constructor with message. */ |
| 55 | + public ParseException(String message) { |
| 56 | + super(message); |
| 57 | + } |
| 58 | + |
| 59 | + |
| 60 | + /** |
| 61 | + * This is the last token that has been consumed successfully. If |
| 62 | + * this object has been created due to a parse error, the token |
| 63 | + * followng this token will (therefore) be the first error token. |
| 64 | + */ |
| 65 | + public Token currentToken; |
| 66 | + |
| 67 | + /** |
| 68 | + * Each entry in this array is an array of integers. Each array |
| 69 | + * of integers represents a sequence of tokens (by their ordinal |
| 70 | + * values) that is expected at this point of the parse. |
| 71 | + */ |
| 72 | + public int[][] expectedTokenSequences; |
| 73 | + |
| 74 | + /** |
| 75 | + * This is a reference to the "tokenImage" array of the generated |
| 76 | + * parser within which the parse error occurred. This array is |
| 77 | + * defined in the generated ...Constants interface. |
| 78 | + */ |
| 79 | + public String[] tokenImage; |
| 80 | + |
| 81 | + /** |
| 82 | + * It uses "currentToken" and "expectedTokenSequences" to generate a parse |
| 83 | + * error message and returns it. If this object has been created |
| 84 | + * due to a parse error, and you do not catch it (it gets thrown |
| 85 | + * from the parser) the correct error message |
| 86 | + * gets displayed. |
| 87 | + */ |
| 88 | + private static String initialise(Token currentToken, |
| 89 | + int[][] expectedTokenSequences, |
| 90 | + String[] tokenImage) { |
| 91 | + String eol = System.getProperty("line.separator", "\n"); |
| 92 | + StringBuffer expected = new StringBuffer(); |
| 93 | + int maxSize = 0; |
| 94 | + for (int i = 0; i < expectedTokenSequences.length; i++) { |
| 95 | + if (maxSize < expectedTokenSequences[i].length) { |
| 96 | + maxSize = expectedTokenSequences[i].length; |
| 97 | + } |
| 98 | + for (int j = 0; j < expectedTokenSequences[i].length; j++) { |
| 99 | + expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' '); |
| 100 | + } |
| 101 | + if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { |
| 102 | + expected.append("..."); |
| 103 | + } |
| 104 | + expected.append(eol).append(" "); |
| 105 | + } |
| 106 | + String retval = "Encountered \""; |
| 107 | + Token tok = currentToken.next; |
| 108 | + for (int i = 0; i < maxSize; i++) { |
| 109 | + if (i != 0) retval += " "; |
| 110 | + if (tok.kind == 0) { |
| 111 | + retval += tokenImage[0]; |
| 112 | + break; |
| 113 | + } |
| 114 | + retval += " " + tokenImage[tok.kind]; |
| 115 | + retval += " \""; |
| 116 | + retval += add_escapes(tok.image); |
| 117 | + retval += " \""; |
| 118 | + tok = tok.next; |
| 119 | + } |
| 120 | + retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; |
| 121 | + retval += "." + eol; |
| 122 | + if (expectedTokenSequences.length == 1) { |
| 123 | + retval += "Was expecting:" + eol + " "; |
| 124 | + } else { |
| 125 | + retval += "Was expecting one of:" + eol + " "; |
| 126 | + } |
| 127 | + retval += expected.toString(); |
| 128 | + return retval; |
| 129 | + } |
| 130 | + |
| 131 | + /** |
| 132 | + * The end of line string for this machine. |
| 133 | + */ |
| 134 | + protected String eol = System.getProperty("line.separator", "\n"); |
| 135 | + |
| 136 | + /** |
| 137 | + * Used to convert raw characters to their escaped version |
| 138 | + * when these raw version cannot be used as part of an ASCII |
| 139 | + * string literal. |
| 140 | + */ |
| 141 | + static String add_escapes(String str) { |
| 142 | + StringBuffer retval = new StringBuffer(); |
| 143 | + char ch; |
| 144 | + for (int i = 0; i < str.length(); i++) { |
| 145 | + switch (str.charAt(i)) |
| 146 | + { |
| 147 | + case 0 : |
| 148 | + continue; |
| 149 | + case '\b': |
| 150 | + retval.append("\\b"); |
| 151 | + continue; |
| 152 | + case '\t': |
| 153 | + retval.append("\\t"); |
| 154 | + continue; |
| 155 | + case '\n': |
| 156 | + retval.append("\\n"); |
| 157 | + continue; |
| 158 | + case '\f': |
| 159 | + retval.append("\\f"); |
| 160 | + continue; |
| 161 | + case '\r': |
| 162 | + retval.append("\\r"); |
| 163 | + continue; |
| 164 | + case '\"': |
| 165 | + retval.append("\\\""); |
| 166 | + continue; |
| 167 | + case '\'': |
| 168 | + retval.append("\\\'"); |
| 169 | + continue; |
| 170 | + case '\\': |
| 171 | + retval.append("\\\\"); |
| 172 | + continue; |
| 173 | + default: |
| 174 | + if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { |
| 175 | + String s = "0000" + Integer.toString(ch, 16); |
| 176 | + retval.append("\\u" + s.substring(s.length() - 4, s.length())); |
| 177 | + } else { |
| 178 | + retval.append(ch); |
| 179 | + } |
| 180 | + continue; |
| 181 | + } |
| 182 | + } |
| 183 | + return retval.toString(); |
| 184 | + } |
| 185 | + |
| 186 | +} |
| 187 | +/* JavaCC - OriginalChecksum=3d3b87c136d4ef51cb621720c51a0611 (do not edit this line) */ |
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