1 /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 2.1 */
4 public class TokenMgrError extends Error
7 * Ordinals for various reasons why an Error of this type can be thrown.
11 * Lexical error occured.
13 static final int LEXICAL_ERROR = 0;
16 * An attempt wass made to create a second instance of a static token manager.
18 static final int STATIC_LEXER_ERROR = 1;
21 * Tried to change to an invalid lexical state.
23 static final int INVALID_LEXICAL_STATE = 2;
26 * Detected (and bailed out of) an infinite loop in the token manager.
28 static final int LOOP_DETECTED = 3;
31 * Indicates the reason why the exception is thrown. It will have
32 * one of the above 4 values.
37 * Replaces unprintable characters by their espaced (or unicode escaped)
38 * equivalents in the given string
40 protected static final String addEscapes(String str) {
41 StringBuffer retval = new StringBuffer();
43 for (int i = 0; i < str.length(); i++) {
44 switch (str.charAt(i))
64 retval.append("\\\"");
67 retval.append("\\\'");
70 retval.append("\\\\");
73 if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
74 String s = "0000" + Integer.toString(ch, 16);
75 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
82 return retval.toString();
86 * Returns a detailed message for the Error when it is thrown by the
87 * token manager to indicate a lexical error.
89 * EOFSeen : indicates if EOF caused the lexicl error
90 * curLexState : lexical state in which this error occured
91 * errorLine : line number when the error occured
92 * errorColumn : column number when the error occured
93 * errorAfter : prefix that was seen before this error occured
94 * curchar : the offending character
95 * Note: You can customize the lexical error message by modifying this method.
97 private static final String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
98 return("Lexical error at line " +
99 errorLine + ", column " +
100 errorColumn + ". Encountered: " +
101 (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
102 "after : \"" + addEscapes(errorAfter) + "\"");
106 * You can also modify the body of this method to customize your error messages.
107 * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
108 * of end-users concern, so you can return something like :
110 * "Internal Error : Please file a bug report .... "
112 * from this method for such cases in the release version of your parser.
114 public String getMessage() {
115 return super.getMessage();
119 * Constructors of various flavors follow.
122 public TokenMgrError() {
125 public TokenMgrError(String message, int reason) {
130 public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
131 this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);