001:/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 *
002: *
003: * !!!MODIFIED BY DMITRI PLOTNIKOV - DO NOT REGENERATE!!!
004: */
005:package org.apache.commons.jxpath.ri.parser;
006:
007:public class TokenMgrError extends Error
008:{
009: /*
010: * Ordinals for various reasons why an Error of this type can be thrown.
011: */
012:
013: /**
014: * Lexical error occured.
015: */
016: static final int LEXICAL_ERROR = 0;
017:
018: /**
019: * An attempt wass made to create a second instance of a static token manager.
020: */
021: static final int STATIC_LEXER_ERROR = 1;
022:
023: /**
024: * Tried to change to an invalid lexical state.
025: */
026: static final int INVALID_LEXICAL_STATE = 2;
027:
028: /**
029: * Detected (and bailed out of) an infinite loop in the token manager.
030: */
031: static final int LOOP_DETECTED = 3;
032:
033: /**
034: * Indicates the reason why the exception is thrown. It will have
035: * one of the above 4 values.
036: */
037: int errorCode;
038:
039: /**
040: * Replaces unprintable characters by their espaced (or unicode escaped)
041: * equivalents in the given string
042: */
043: public static final String addEscapes(String str) {
044: StringBuffer retval = new StringBuffer();
045: char ch;
046: for (int i = 0; i < str.length(); i++) {
047: switch (str.charAt(i))
048: {
049: case 0 :
050: continue;
051: case '\b':
052: retval.append("\\b");
053: continue;
054: case '\t':
055: retval.append("\\t");
056: continue;
057: case '\n':
058: retval.append("\\n");
059: continue;
060: case '\f':
061: retval.append("\\f");
062: continue;
063: case '\r':
064: retval.append("\\r");
065: continue;
066: case '\"':
067: retval.append("\\\"");
068: continue;
069: case '\'':
070: retval.append("\\\'");
071: continue;
072: case '\\':
073: retval.append("\\\\");
074: continue;
075: default:
076: if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
077: String s = "0000" + Integer.toString(ch, 16);
078: retval.append("\\u" + s.substring(s.length() - 4, s.length()));
079: } else {
080: retval.append(ch);
081: }
082: continue;
083: }
084: }
085: return retval.toString();
086: }
087:
088: /**
089: * Returns a detailed message for the Error when it is thrown by the
090: * token manager to indicate a lexical error.
091: * Parameters :
092: * EOFSeen : indicates if EOF caused the lexicl error
093: * curLexState : lexical state in which this error occured
094: * errorLine : line number when the error occured
095: * errorColumn : column number when the error occured
096: * errorAfter : prefix that was seen before this error occured
097: * curchar : the offending character
098: * Note: You can customize the lexical error message by modifying this method.
099: */
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:}
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