1 /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */
2 /* JavaCCOptions:KEEP_LINE_COL=null */
3 /* Copyright (C) 2002 Albert Tumanov
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 */
20
21 package net.sourceforge.pmd.lang.plsql.ast;
22
23 /**
24 * This exception is thrown when parse errors are encountered.
25 * You can explicitly create objects of this exception type by
26 * calling the method generateParseException in the generated
27 * parser.
28 *
29 * You can modify this class to customize your error reporting
30 * mechanisms so long as you retain the public fields.
31 */
32 public class ParseException extends net.sourceforge.pmd.lang.ast.ParseException {
33
34 /**
35 * The version identifier for this Serializable class.
36 * Increment only if the <i>serialized</i> form of the
37 * class changes.
38 */
39 private static final long serialVersionUID = 1L;
40
41 /**
42 * This constructor is used by the method "generateParseException"
43 * in the generated parser. Calling this constructor generates
44 * a new object of this type with the fields "currentToken",
45 * "expectedTokenSequences", and "tokenImage" set.
46 */
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 }
57
58 /**
59 * The following constructors are for use by you for whatever
60 * purpose you can think of. Constructing the exception in this
61 * manner makes the exception behave in the normal way - i.e., as
62 * documented in the class "Throwable". The fields "errorToken",
63 * "expectedTokenSequences", and "tokenImage" do not contain
64 * relevant information. The JavaCC generated code does not use
65 * these constructors.
66 */
67
68 public ParseException() {
69 super();
70 }
71
72 /** Constructor with message. */
73 public ParseException(String message) {
74 super(message);
75 }
76
77
78 /**
79 * This is the last token that has been consumed successfully. If
80 * this object has been created due to a parse error, the token
81 * followng this token will (therefore) be the first error token.
82 */
83 public Token currentToken;
84
85 /**
86 * Each entry in this array is an array of integers. Each array
87 * of integers represents a sequence of tokens (by their ordinal
88 * values) that is expected at this point of the parse.
89 */
90 public int[][] expectedTokenSequences;
91
92 /**
93 * This is a reference to the "tokenImage" array of the generated
94 * parser within which the parse error occurred. This array is
95 * defined in the generated ...Constants interface.
96 */
97 public String[] tokenImage;
98
99 /**
100 * It uses "currentToken" and "expectedTokenSequences" to generate a parse
101 * error message and returns it. If this object has been created
102 * due to a parse error, and you do not catch it (it gets thrown
103 * from the parser) the correct error message
104 * gets displayed.
105 */
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 }
148
149 /**
150 * The end of line string for this machine.
151 */
152 protected String eol = System.getProperty("line.separator", "\n");
153
154 /**
155 * Used to convert raw characters to their escaped version
156 * when these raw version cannot be used as part of an ASCII
157 * string literal.
158 */
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 }
205 /* JavaCC - OriginalChecksum=fae4df325150a8f5b6558017c650fd25 (do not edit this line) */