1
2 /*
3 * Licensed to the Apache Software Foundation (ASF) under one or more
4 * contributor license agreements. See the NOTICE file distributed with
5 * this work for additional information regarding copyright ownership.
6 * The ASF licenses this file to You under the Apache License, Version 2.0
7 * (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.commons.jexl3.parser;
19
20 /**
21 * This exception is thrown when parse errors are encountered.
22 */
23 public class ParseException extends Exception implements JavaccError {
24 /**
25 * The version identifier.
26 */
27 private static final long serialVersionUID = 1L;
28 /**
29 * Last correct input before error occurs.
30 */
31 private String after = "";
32 /**
33 * Error line.
34 */
35 private int line = -1;
36 /**
37 * Error column.
38 */
39 private int column = -1;
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 * @param currentToken This is the last token that has been consumed successfully. If
47 * this object has been created due to a parse error, the token
48 * following this token will (therefore) be the first error token.
49 * @param expectedTokenSequences Each entry in this array is an array of integers. Each array
50 * of integers represents a sequence of tokens (by their ordinal
51 * values) that is expected at this point of the parse.
52 * @param tokenImage This is a reference to the "tokenImage" array of the generated
53 * parser within which the parse error occurred. This array is
54 * defined in the generated ...Constants interface.
55 */
56 public ParseException(final Token currentToken, final int[][] expectedTokenSequences, final String[] tokenImage) {
57 super("parse error");
58 final Token tok = currentToken.next;
59 after = tok.image;
60 line = tok.beginLine;
61 column = tok.beginColumn;
62 }
63
64 /**
65 * Default ctor.
66 */
67 public ParseException() {
68 }
69
70 /** Constructor with message. */
71 public ParseException(final String message) {
72 super(message);
73 }
74
75 @Override
76 public int getLine() {
77 return line;
78 }
79
80 @Override
81 public int getColumn() {
82 return column;
83 }
84
85 @Override
86 public String getAfter() {
87 return after;
88 }
89 }