[120] | 1 | /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */ |
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| 2 | /** |
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| 3 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 4 | * or more contributor license agreements. See the NOTICE file |
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| 5 | * distributed with this work for additional information |
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| 6 | * regarding copyright ownership. The ASF licenses this file |
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| 7 | * to you under the Apache License, Version 2.0 (the |
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| 8 | * "License"); you may not use this file except in compliance |
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| 9 | * with the License. You may obtain a copy of the License at |
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| 10 | * |
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| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 12 | * |
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| 13 | * Unless required by applicable law or agreed to in writing, software |
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| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 16 | * See the License for the specific language governing permissions and |
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| 17 | * limitations under the License. |
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| 18 | */ |
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| 19 | |
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| 20 | package org.apache.hadoop.record.compiler.generated; |
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| 21 | |
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| 22 | public class TokenMgrError extends Error |
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| 23 | { |
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| 24 | /* |
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| 25 | * Ordinals for various reasons why an Error of this type can be thrown. |
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| 26 | */ |
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| 27 | |
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| 28 | /** |
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| 29 | * Lexical error occured. |
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| 30 | */ |
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| 31 | static final int LEXICAL_ERROR = 0; |
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| 32 | |
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| 33 | /** |
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| 34 | * An attempt wass made to create a second instance of a static token manager. |
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| 35 | */ |
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| 36 | static final int STATIC_LEXER_ERROR = 1; |
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| 37 | |
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| 38 | /** |
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| 39 | * Tried to change to an invalid lexical state. |
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| 40 | */ |
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| 41 | static final int INVALID_LEXICAL_STATE = 2; |
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| 42 | |
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| 43 | /** |
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| 44 | * Detected (and bailed out of) an infinite loop in the token manager. |
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| 45 | */ |
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| 46 | static final int LOOP_DETECTED = 3; |
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| 47 | |
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| 48 | /** |
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| 49 | * Indicates the reason why the exception is thrown. It will have |
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| 50 | * one of the above 4 values. |
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| 51 | */ |
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| 52 | int errorCode; |
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| 53 | |
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| 54 | /** |
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| 55 | * Replaces unprintable characters by their espaced (or unicode escaped) |
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| 56 | * equivalents in the given string |
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| 57 | */ |
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| 58 | protected static final String addEscapes(String str) { |
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| 59 | StringBuffer retval = new StringBuffer(); |
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| 60 | char ch; |
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| 61 | for (int i = 0; i < str.length(); i++) { |
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| 62 | switch (str.charAt(i)) |
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| 63 | { |
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| 64 | case 0 : |
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| 65 | continue; |
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| 66 | case '\b': |
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| 67 | retval.append("\\b"); |
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| 68 | continue; |
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| 69 | case '\t': |
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| 70 | retval.append("\\t"); |
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| 71 | continue; |
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| 72 | case '\n': |
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| 73 | retval.append("\\n"); |
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| 74 | continue; |
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| 75 | case '\f': |
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| 76 | retval.append("\\f"); |
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| 77 | continue; |
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| 78 | case '\r': |
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| 79 | retval.append("\\r"); |
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| 80 | continue; |
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| 81 | case '\"': |
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| 82 | retval.append("\\\""); |
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| 83 | continue; |
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| 84 | case '\'': |
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| 85 | retval.append("\\\'"); |
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| 86 | continue; |
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| 87 | case '\\': |
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| 88 | retval.append("\\\\"); |
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| 89 | continue; |
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| 90 | default: |
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| 91 | if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) { |
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| 92 | String s = "0000" + Integer.toString(ch, 16); |
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| 93 | retval.append("\\u" + s.substring(s.length() - 4, s.length())); |
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| 94 | } else { |
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| 95 | retval.append(ch); |
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| 96 | } |
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| 97 | continue; |
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| 98 | } |
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| 99 | } |
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| 100 | return retval.toString(); |
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| 101 | } |
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| 102 | |
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| 103 | /** |
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| 104 | * Returns a detailed message for the Error when it is thrown by the |
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| 105 | * token manager to indicate a lexical error. |
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| 106 | * Parameters : |
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| 107 | * EOFSeen : indicates if EOF caused the lexicl error |
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| 108 | * curLexState : lexical state in which this error occured |
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| 109 | * errorLine : line number when the error occured |
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| 110 | * errorColumn : column number when the error occured |
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| 111 | * errorAfter : prefix that was seen before this error occured |
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| 112 | * curchar : the offending character |
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| 113 | * Note: You can customize the lexical error message by modifying this method. |
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| 114 | */ |
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| 115 | protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) { |
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| 116 | return("Lexical error at line " + |
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| 117 | errorLine + ", column " + |
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| 118 | errorColumn + ". Encountered: " + |
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| 119 | (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") + |
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| 120 | "after : \"" + addEscapes(errorAfter) + "\""); |
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| 121 | } |
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| 122 | |
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| 123 | /** |
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| 124 | * You can also modify the body of this method to customize your error messages. |
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| 125 | * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not |
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| 126 | * of end-users concern, so you can return something like : |
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| 127 | * |
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| 128 | * "Internal Error : Please file a bug report .... " |
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| 129 | * |
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| 130 | * from this method for such cases in the release version of your parser. |
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| 131 | */ |
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| 132 | public String getMessage() { |
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| 133 | return super.getMessage(); |
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| 134 | } |
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| 135 | |
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| 136 | /* |
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| 137 | * Constructors of various flavors follow. |
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| 138 | */ |
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| 139 | |
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| 140 | public TokenMgrError() { |
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| 141 | } |
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| 142 | |
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| 143 | public TokenMgrError(String message, int reason) { |
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| 144 | super(message); |
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| 145 | errorCode = reason; |
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| 146 | } |
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| 147 | |
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| 148 | public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) { |
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| 149 | this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason); |
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| 150 | } |
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| 151 | } |
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