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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2001, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 0.7pre2 */ | ||
| 27 | package com.sun.tools.example.debug.expr; | ||
| 28 | |||
| 29 | public class TokenMgrError extends Error | ||
| 30 | { | ||
| 31 | /* | ||
| 32 | * Ordinals for various reasons why an Error of this type can be thrown. | ||
| 33 | */ | ||
| 34 | |||
| 35 | private static final long serialVersionUID = -6236440836177601522L; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * Lexical error occured. | ||
| 39 | */ | ||
| 40 | static final int LEXICAL_ERROR = 0; | ||
| 41 | |||
| 42 | /** | ||
| 43 | * An attempt wass made to create a second instance of a static token manager. | ||
| 44 | */ | ||
| 45 | static final int STATIC_LEXER_ERROR = 1; | ||
| 46 | |||
| 47 | /** | ||
| 48 | * Tried to change to an invalid lexical state. | ||
| 49 | */ | ||
| 50 | static final int INVALID_LEXICAL_STATE = 2; | ||
| 51 | |||
| 52 | /** | ||
| 53 | * Detected (and bailed out of) an infinite loop in the token manager. | ||
| 54 | */ | ||
| 55 | static final int LOOP_DETECTED = 3; | ||
| 56 | |||
| 57 | /** | ||
| 58 | * Indicates the reason why the exception is thrown. It will have | ||
| 59 | * one of the above 4 values. | ||
| 60 | */ | ||
| 61 | int errorCode; | ||
| 62 | |||
| 63 | /** | ||
| 64 | * Replaces unprintable characters by their espaced (or unicode escaped) | ||
| 65 | * equivalents in the given string | ||
| 66 | */ | ||
| 67 | protected static final String addEscapes(String str) { | ||
| 68 | StringBuffer retval = new StringBuffer(); | ||
| 69 | char ch; | ||
| 70 | for (int i = 0; i < str.length(); i++) { | ||
| 71 | switch (str.charAt(i)) | ||
| 72 | { | ||
| 73 | case 0 : | ||
| 74 | continue; | ||
| 75 | case '\b': | ||
| 76 | retval.append("\\b"); | ||
| 77 | continue; | ||
| 78 | case '\t': | ||
| 79 | retval.append("\\t"); | ||
| 80 | continue; | ||
| 81 | case '\n': | ||
| 82 | retval.append("\\n"); | ||
| 83 | continue; | ||
| 84 | case '\f': | ||
| 85 | retval.append("\\f"); | ||
| 86 | continue; | ||
| 87 | case '\r': | ||
| 88 | retval.append("\\r"); | ||
| 89 | continue; | ||
| 90 | case '\"': | ||
| 91 | retval.append("\\\""); | ||
| 92 | continue; | ||
| 93 | case '\'': | ||
| 94 | retval.append("\\\'"); | ||
| 95 | continue; | ||
| 96 | case '\\': | ||
| 97 | retval.append("\\\\"); | ||
| 98 | continue; | ||
| 99 | default: | ||
| 100 | if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { | ||
| 101 | String s = "0000" + Integer.toString(ch, 16); | ||
| 102 | retval.append("\\u" + s.substring(s.length() - 4, s.length())); | ||
| 103 | } else { | ||
| 104 | retval.append(ch); | ||
| 105 | } | ||
| 106 | continue; | ||
| 107 | } | ||
| 108 | } | ||
| 109 | return retval.toString(); | ||
| 110 | } | ||
| 111 | |||
| 112 | /** | ||
| 113 | * Returns a detailed message for the Error when it is thrown by the | ||
| 114 | * token manager to indicate a lexical error. | ||
| 115 | * Parameters : | ||
| 116 | * EOFSeen : indicates if EOF caused the lexicl error | ||
| 117 | * curLexState : lexical state in which this error occured | ||
| 118 | * errorLine : line number when the error occured | ||
| 119 | * errorColumn : column number when the error occured | ||
| 120 | * errorAfter : prefix that was seen before this error occured | ||
| 121 | * curchar : the offending character | ||
| 122 | * Note: You can customize the lexical error message by modifying this method. | ||
| 123 | */ | ||
| 124 | private static final String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) { | ||
| 125 | return("Lexical error at line " + | ||
| 126 | errorLine + ", column " + | ||
| 127 | errorColumn + ". Encountered: " + | ||
| 128 | (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") + | ||
| 129 | "after : \"" + addEscapes(errorAfter) + "\""); | ||
| 130 | } | ||
| 131 | |||
| 132 | /** | ||
| 133 | * You can also modify the body of this method to customize your error messages. | ||
| 134 | * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not | ||
| 135 | * of end-users concern, so you can return something like : | ||
| 136 | * | ||
| 137 | * "Internal Error : Please file a bug report .... " | ||
| 138 | * | ||
| 139 | * from this method for such cases in the release version of your parser. | ||
| 140 | */ | ||
| 141 | @Override | ||
| 142 | public String getMessage() { | ||
| 143 | return super.getMessage(); | ||
| 144 | } | ||
| 145 | |||
| 146 | /* | ||
| 147 | * Constructors of various flavors follow. | ||
| 148 | */ | ||
| 149 | |||
| 150 | public TokenMgrError() { | ||
| 151 | } | ||
| 152 | |||
| 153 | public TokenMgrError(String message, int reason) { | ||
| 154 | super(message); | ||
| 155 | errorCode = reason; | ||
| 156 | } | ||
| 157 | |||
| 158 | public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) { | ||
| 159 | this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason); | ||
| 160 | } | ||
| 161 | } | ||