1 16 17 18 package org.apache.taglibs.standard.lang.jpath.expression; 19 20 29 public class ParseException extends Exception { 30 31 43 public ParseException(Token currentTokenVal, 44 int[][] expectedTokenSequencesVal, 45 String [] tokenImageVal 46 ) 47 { 48 super(""); 49 specialConstructor = true; 50 currentToken = currentTokenVal; 51 expectedTokenSequences = expectedTokenSequencesVal; 52 tokenImage = tokenImageVal; 53 } 54 55 64 65 public ParseException() { 66 super(); 67 specialConstructor = false; 68 } 69 70 public ParseException(String message) { 71 super(message); 72 specialConstructor = false; 73 } 74 75 80 protected boolean specialConstructor; 81 82 87 public Token currentToken; 88 89 94 public int[][] expectedTokenSequences; 95 96 101 public String [] tokenImage; 102 103 113 public String getMessage() { 114 if (!specialConstructor) { 115 return super.getMessage(); 116 } 117 String expected = ""; 118 int maxSize = 0; 119 for (int i = 0; i < expectedTokenSequences.length; i++) { 120 if (maxSize < expectedTokenSequences[i].length) { 121 maxSize = expectedTokenSequences[i].length; 122 } 123 for (int j = 0; j < expectedTokenSequences[i].length; j++) { 124 expected += tokenImage[expectedTokenSequences[i][j]] + " "; 125 } 126 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) { 127 expected += "..."; 128 } 129 expected += eol + " "; 130 } 131 String retval = "Encountered \""; 132 Token tok = currentToken.next; 133 for (int i = 0; i < maxSize; i++) { 134 if (i != 0) retval += " "; 135 if (tok.kind == 0) { 136 retval += tokenImage[0]; 137 break; 138 } 139 retval += add_escapes(tok.image); 140 tok = tok.next; 141 } 142 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn + "." + eol; 143 if (expectedTokenSequences.length == 1) { 144 retval += "Was expecting:" + eol + " "; 145 } else { 146 retval += "Was expecting one of:" + eol + " "; 147 } 148 retval += expected; 149 return retval; 150 } 151 152 155 protected String eol = System.getProperty("line.separator", "\n"); 156 157 162 protected String add_escapes(String str) { 163 StringBuffer retval = new StringBuffer (); 164 char ch; 165 for (int i = 0; i < str.length(); i++) { 166 switch (str.charAt(i)) 167 { 168 case 0 : 169 continue; 170 case '\b': 171 retval.append("\\b"); 172 continue; 173 case '\t': 174 retval.append("\\t"); 175 continue; 176 case '\n': 177 retval.append("\\n"); 178 continue; 179 case '\f': 180 retval.append("\\f"); 181 continue; 182 case '\r': 183 retval.append("\\r"); 184 continue; 185 case '\"': 186 retval.append("\\\""); 187 continue; 188 case '\'': 189 retval.append("\\\'"); 190 continue; 191 case '\\': 192 retval.append("\\\\"); 193 continue; 194 default: 195 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { 196 String s = "0000" + Integer.toString(ch, 16); 197 retval.append("\\u" + s.substring(s.length() - 4, s.length())); 198 } else { 199 retval.append(ch); 200 } 201 continue; 202 } 203 } 204 return retval.toString(); 205 } 206 207 } 208 | Popular Tags |