1 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
2 package com.quiotix.html.parser;
3
4 /** Token Manager Error. */
5 public class TokenMgrError extends Error
6 {
7
8 /*
9 * Ordinals for various reasons why an Error of this type can be thrown.
10 */
11
12 /**
13 * Lexical error occurred.
14 */
15 static final int LEXICAL_ERROR = 0;
16
17 /**
18 * An attempt was made to create a second instance of a static token manager.
19 */
20 static final int STATIC_LEXER_ERROR = 1;
21
22 /**
23 * Tried to change to an invalid lexical state.
24 */
25 static final int INVALID_LEXICAL_STATE = 2;
26
27 /**
28 * Detected (and bailed out of) an infinite loop in the token manager.
29 */
30 static final int LOOP_DETECTED = 3;
31
32 /**
33 * Indicates the reason why the exception is thrown. It will have
34 * one of the above 4 values.
35 */
36 int errorCode;
37
38 /**
39 * Replaces unprintable characters by their escaped (or unicode escaped)
40 * equivalents in the given string
41 */
42 protected static final String addEscapes(String str) {
43 StringBuffer retval = new StringBuffer();
44 char ch;
45 for (int i = 0; i < str.length(); i++) {
46 switch (str.charAt(i))
47 {
48 case 0 :
49 continue;
50 case '\b':
51 retval.append("\\b");
52 continue;
53 case '\t':
54 retval.append("\\t");
55 continue;
56 case '\n':
57 retval.append("\\n");
58 continue;
59 case '\f':
60 retval.append("\\f");
61 continue;
62 case '\r':
63 retval.append("\\r");
64 continue;
65 case '\"':
66 retval.append("\\\"");
67 continue;
68 case '\'':
69 retval.append("\\\'");
70 continue;
71 case '\\':
72 retval.append("\\\\");
73 continue;
74 default:
75 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
76 String s = "0000" + Integer.toString(ch, 16);
77 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
78 } else {
79 retval.append(ch);
80 }
81 continue;
82 }
83 }
84 return retval.toString();
85 }
86
87 /**
88 * Returns a detailed message for the Error when it is thrown by the
89 * token manager to indicate a lexical error.
90 * Parameters :
91 * EOFSeen : indicates if EOF caused the lexical error
92 * curLexState : lexical state in which this error occurred
93 * errorLine : line number when the error occurred
94 * errorColumn : column number when the error occurred
95 * errorAfter : prefix that was seen before this error occurred
96 * curchar : the offending character
97 * Note: You can customize the lexical error message by modifying this method.
98 */
99 protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
100 return("Lexical error at line " +
101 errorLine + ", column " +
102 errorColumn + ". Encountered: " +
103 (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
104 "after : \"" + addEscapes(errorAfter) + "\"");
105 }
106
107 /**
108 * You can also modify the body of this method to customize your error messages.
109 * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
110 * of end-users concern, so you can return something like :
111 *
112 * "Internal Error : Please file a bug report .... "
113 *
114 * from this method for such cases in the release version of your parser.
115 */
116 public String getMessage() {
117 return super.getMessage();
118 }
119
120 /*
121 * Constructors of various flavors follow.
122 */
123
124 /** No arg constructor. */
125 public TokenMgrError() {
126 }
127
128 /** Constructor with message and reason. */
129 public TokenMgrError(String message, int reason) {
130 super(message);
131 errorCode = reason;
132 }
133
134 /** Full Constructor. */
135 public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
136 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
137 }
138 }