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21 package net.sourceforge.pmd.lang.plsql.ast;
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32 public class ParseException extends net.sourceforge.pmd.lang.ast.ParseException {
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39 private static final long serialVersionUID = 1L;
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47 public ParseException(Token currentTokenVal,
48 int[][] expectedTokenSequencesVal,
49 String[] tokenImageVal
50 )
51 {
52 super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
53 currentToken = currentTokenVal;
54 expectedTokenSequences = expectedTokenSequencesVal;
55 tokenImage = tokenImageVal;
56 }
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68 public ParseException() {
69 super();
70 }
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73 public ParseException(String message) {
74 super(message);
75 }
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83 public Token currentToken;
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90 public int[][] expectedTokenSequences;
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97 public String[] tokenImage;
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106 private static String initialise(Token currentToken,
107 int[][] expectedTokenSequences,
108 String[] tokenImage) {
109 String eol = System.getProperty("line.separator", "\n");
110 StringBuffer expected = new StringBuffer();
111 int maxSize = 0;
112 for (int i = 0; i < expectedTokenSequences.length; i++) {
113 if (maxSize < expectedTokenSequences[i].length) {
114 maxSize = expectedTokenSequences[i].length;
115 }
116 for (int j = 0; j < expectedTokenSequences[i].length; j++) {
117 expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
118 }
119 if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
120 expected.append("...");
121 }
122 expected.append(eol).append(" ");
123 }
124 String retval = "Encountered \"";
125 Token tok = currentToken.next;
126 for (int i = 0; i < maxSize; i++) {
127 if (i != 0) retval += " ";
128 if (tok.kind == 0) {
129 retval += tokenImage[0];
130 break;
131 }
132 retval += " " + tokenImage[tok.kind];
133 retval += " \"";
134 retval += add_escapes(tok.image);
135 retval += " \"";
136 tok = tok.next;
137 }
138 retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
139 retval += "." + eol;
140 if (expectedTokenSequences.length == 1) {
141 retval += "Was expecting:" + eol + " ";
142 } else {
143 retval += "Was expecting one of:" + eol + " ";
144 }
145 retval += expected.toString();
146 return retval;
147 }
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152 protected String eol = System.getProperty("line.separator", "\n");
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159 static String add_escapes(String str) {
160 StringBuffer retval = new StringBuffer();
161 char ch;
162 for (int i = 0; i < str.length(); i++) {
163 switch (str.charAt(i))
164 {
165 case 0 :
166 continue;
167 case '\b':
168 retval.append("\\b");
169 continue;
170 case '\t':
171 retval.append("\\t");
172 continue;
173 case '\n':
174 retval.append("\\n");
175 continue;
176 case '\f':
177 retval.append("\\f");
178 continue;
179 case '\r':
180 retval.append("\\r");
181 continue;
182 case '\"':
183 retval.append("\\\"");
184 continue;
185 case '\'':
186 retval.append("\\\'");
187 continue;
188 case '\\':
189 retval.append("\\\\");
190 continue;
191 default:
192 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
193 String s = "0000" + Integer.toString(ch, 16);
194 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
195 } else {
196 retval.append(ch);
197 }
198 continue;
199 }
200 }
201 return retval.toString();
202 }
203
204 }
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