TokenMgrError.java
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上传日期:2018-01-08
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文件大小:5k
- /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
- /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.hadoop.record.compiler.generated;
- public class TokenMgrError extends Error
- {
- /*
- * Ordinals for various reasons why an Error of this type can be thrown.
- */
- /**
- * Lexical error occured.
- */
- static final int LEXICAL_ERROR = 0;
- /**
- * An attempt wass made to create a second instance of a static token manager.
- */
- static final int STATIC_LEXER_ERROR = 1;
- /**
- * Tried to change to an invalid lexical state.
- */
- static final int INVALID_LEXICAL_STATE = 2;
- /**
- * Detected (and bailed out of) an infinite loop in the token manager.
- */
- static final int LOOP_DETECTED = 3;
- /**
- * Indicates the reason why the exception is thrown. It will have
- * one of the above 4 values.
- */
- int errorCode;
- /**
- * Replaces unprintable characters by their espaced (or unicode escaped)
- * equivalents in the given string
- */
- protected static final String addEscapes(String str) {
- StringBuffer retval = new StringBuffer();
- char ch;
- for (int i = 0; i < str.length(); i++) {
- switch (str.charAt(i))
- {
- case 0 :
- continue;
- case 'b':
- retval.append("\b");
- continue;
- case 't':
- retval.append("\t");
- continue;
- case 'n':
- retval.append("\n");
- continue;
- case 'f':
- retval.append("\f");
- continue;
- case 'r':
- retval.append("\r");
- continue;
- case '"':
- retval.append("\"");
- continue;
- case ''':
- retval.append("\'");
- continue;
- case '\':
- retval.append("\\");
- continue;
- default:
- if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
- String s = "0000" + Integer.toString(ch, 16);
- retval.append("\u" + s.substring(s.length() - 4, s.length()));
- } else {
- retval.append(ch);
- }
- continue;
- }
- }
- return retval.toString();
- }
- /**
- * Returns a detailed message for the Error when it is thrown by the
- * token manager to indicate a lexical error.
- * Parameters :
- * EOFSeen : indicates if EOF caused the lexicl error
- * curLexState : lexical state in which this error occured
- * errorLine : line number when the error occured
- * errorColumn : column number when the error occured
- * errorAfter : prefix that was seen before this error occured
- * curchar : the offending character
- * Note: You can customize the lexical error message by modifying this method.
- */
- protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
- return("Lexical error at line " +
- errorLine + ", column " +
- errorColumn + ". Encountered: " +
- (EOFSeen ? "<EOF> " : (""" + addEscapes(String.valueOf(curChar)) + """) + " (" + (int)curChar + "), ") +
- "after : "" + addEscapes(errorAfter) + """);
- }
- /**
- * You can also modify the body of this method to customize your error messages.
- * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
- * of end-users concern, so you can return something like :
- *
- * "Internal Error : Please file a bug report .... "
- *
- * from this method for such cases in the release version of your parser.
- */
- public String getMessage() {
- return super.getMessage();
- }
- /*
- * Constructors of various flavors follow.
- */
- public TokenMgrError() {
- }
- public TokenMgrError(String message, int reason) {
- super(message);
- errorCode = reason;
- }
- public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
- this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
- }
- }