1 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 *
2 *
3 * !!!MODIFIED BY DMITRI PLOTNIKOV - DO NOT REGENERATE!!!
4 */
5 package org.apache.commons.jxpath.ri.parser;
6
7 public class TokenMgrError extends Error
8 {
9 /*
10 * Ordinals for various reasons why an Error of this type can be thrown.
11 */
12
13 /**
14 * Lexical error occured.
15 */
16 static final int LEXICAL_ERROR = 0;
17
18 /**
19 * An attempt wass made to create a second instance of a static token manager.
20 */
21 static final int STATIC_LEXER_ERROR = 1;
22
23 /**
24 * Tried to change to an invalid lexical state.
25 */
26 static final int INVALID_LEXICAL_STATE = 2;
27
28 /**
29 * Detected (and bailed out of) an infinite loop in the token manager.
30 */
31 static final int LOOP_DETECTED = 3;
32
33 /**
34 * Indicates the reason why the exception is thrown. It will have
35 * one of the above 4 values.
36 */
37 int errorCode;
38
39 /**
40 * Replaces unprintable characters by their espaced (or unicode escaped)
41 * equivalents in the given string
42 */
43 public static final String addEscapes(String str) {
44 StringBuffer retval = new StringBuffer();
45 char ch;
46 for (int i = 0; i < str.length(); i++) {
47 switch (str.charAt(i))
48 {
49 case 0 :
50 continue;
51 case '\b':
52 retval.append("\\b");
53 continue;
54 case '\t':
55 retval.append("\\t");
56 continue;
57 case '\n':
58 retval.append("\\n");
59 continue;
60 case '\f':
61 retval.append("\\f");
62 continue;
63 case '\r':
64 retval.append("\\r");
65 continue;
66 case '\"':
67 retval.append("\\\"");
68 continue;
69 case '\'':
70 retval.append("\\\'");
71 continue;
72 case '\\':
73 retval.append("\\\\");
74 continue;
75 default:
76 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
77 String s = "0000" + Integer.toString(ch, 16);
78 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
79 } else {
80 retval.append(ch);
81 }
82 continue;
83 }
84 }
85 return retval.toString();
86 }
87
88 /**
89 * Returns a detailed message for the Error when it is thrown by the
90 * token manager to indicate a lexical error.
91 * Parameters :
92 * EOFSeen : indicates if EOF caused the lexicl error
93 * curLexState : lexical state in which this error occured
94 * errorLine : line number when the error occured
95 * errorColumn : column number when the error occured
96 * errorAfter : prefix that was seen before this error occured
97 * curchar : the offending character
98 * Note: You can customize the lexical error message by modifying this method.
99 */
100 protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
101 return("Lexical error at line " +
102 errorLine + ", column " +
103 errorColumn + ". Encountered: " +
104 (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
105 "after : \"" + addEscapes(errorAfter) + "\"");
106 }
107
108 /**
109 * You can also modify the body of this method to customize your error messages.
110 * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
111 * of end-users concern, so you can return something like :
112 *
113 * "Internal Error : Please file a bug report .... "
114 *
115 * from this method for such cases in the release version of your parser.
116 */
117 public String getMessage() {
118 return super.getMessage();
119 }
120
121 /*
122 * Constructors of various flavors follow.
123 */
124
125 public TokenMgrError() {
126 }
127
128 public TokenMgrError(String message, int reason) {
129 super(message);
130 errorCode = reason;
131 }
132
133 public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
134 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
135
136 // ADDED BY ME FROM THIS POINT TO THE EOF - DMITRI PLOTNIKOV
137 position = errorColumn - 1;
138 character = curChar;
139 }
140
141
142 private int position;
143 private char character;
144
145
146 public int getPosition(){
147 return position;
148 }
149
150 public char getCharacter(){
151 return character;
152 }
153 }