Token.java
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上传日期:2018-01-08
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文件大小:3k
- /* Generated By:JavaCC: Do not edit this line. Token.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;
- /**
- * Describes the input token stream.
- */
- public class Token {
- /**
- * An integer that describes the kind of this token. This numbering
- * system is determined by JavaCCParser, and a table of these numbers is
- * stored in the file ...Constants.java.
- */
- public int kind;
- /**
- * beginLine and beginColumn describe the position of the first character
- * of this token; endLine and endColumn describe the position of the
- * last character of this token.
- */
- public int beginLine, beginColumn, endLine, endColumn;
- /**
- * The string image of the token.
- */
- public String image;
- /**
- * A reference to the next regular (non-special) token from the input
- * stream. If this is the last token from the input stream, or if the
- * token manager has not read tokens beyond this one, this field is
- * set to null. This is true only if this token is also a regular
- * token. Otherwise, see below for a description of the contents of
- * this field.
- */
- public Token next;
- /**
- * This field is used to access special tokens that occur prior to this
- * token, but after the immediately preceding regular (non-special) token.
- * If there are no such special tokens, this field is set to null.
- * When there are more than one such special token, this field refers
- * to the last of these special tokens, which in turn refers to the next
- * previous special token through its specialToken field, and so on
- * until the first special token (whose specialToken field is null).
- * The next fields of special tokens refer to other special tokens that
- * immediately follow it (without an intervening regular token). If there
- * is no such token, this field is null.
- */
- public Token specialToken;
- /**
- * Returns the image.
- */
- public String toString()
- {
- return image;
- }
- /**
- * Returns a new Token object, by default. However, if you want, you
- * can create and return subclass objects based on the value of ofKind.
- * Simply add the cases to the switch for all those special cases.
- * For example, if you have a subclass of Token called IDToken that
- * you want to create if ofKind is ID, simlpy add something like :
- *
- * case MyParserConstants.ID : return new IDToken();
- *
- * to the following switch statement. Then you can cast matchedToken
- * variable to the appropriate type and use it in your lexical actions.
- */
- public static final Token newToken(int ofKind)
- {
- switch(ofKind)
- {
- default : return new Token();
- }
- }
- }