1 | /* Generated By:JavaCC: Do not edit this line. Token.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 | /** |
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23 | * Describes the input token stream. |
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24 | */ |
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25 | |
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26 | public class Token { |
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27 | |
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28 | /** |
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29 | * An integer that describes the kind of this token. This numbering |
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30 | * system is determined by JavaCCParser, and a table of these numbers is |
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31 | * stored in the file ...Constants.java. |
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32 | */ |
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33 | public int kind; |
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34 | |
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35 | /** |
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36 | * beginLine and beginColumn describe the position of the first character |
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37 | * of this token; endLine and endColumn describe the position of the |
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38 | * last character of this token. |
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39 | */ |
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40 | public int beginLine, beginColumn, endLine, endColumn; |
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41 | |
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42 | /** |
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43 | * The string image of the token. |
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44 | */ |
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45 | public String image; |
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46 | |
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47 | /** |
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48 | * A reference to the next regular (non-special) token from the input |
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49 | * stream. If this is the last token from the input stream, or if the |
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50 | * token manager has not read tokens beyond this one, this field is |
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51 | * set to null. This is true only if this token is also a regular |
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52 | * token. Otherwise, see below for a description of the contents of |
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53 | * this field. |
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54 | */ |
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55 | public Token next; |
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56 | |
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57 | /** |
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58 | * This field is used to access special tokens that occur prior to this |
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59 | * token, but after the immediately preceding regular (non-special) token. |
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60 | * If there are no such special tokens, this field is set to null. |
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61 | * When there are more than one such special token, this field refers |
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62 | * to the last of these special tokens, which in turn refers to the next |
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63 | * previous special token through its specialToken field, and so on |
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64 | * until the first special token (whose specialToken field is null). |
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65 | * The next fields of special tokens refer to other special tokens that |
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66 | * immediately follow it (without an intervening regular token). If there |
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67 | * is no such token, this field is null. |
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68 | */ |
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69 | public Token specialToken; |
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70 | |
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71 | /** |
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72 | * Returns the image. |
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73 | */ |
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74 | public String toString() |
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75 | { |
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76 | return image; |
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77 | } |
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78 | |
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79 | /** |
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80 | * Returns a new Token object, by default. However, if you want, you |
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81 | * can create and return subclass objects based on the value of ofKind. |
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82 | * Simply add the cases to the switch for all those special cases. |
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83 | * For example, if you have a subclass of Token called IDToken that |
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84 | * you want to create if ofKind is ID, simlpy add something like : |
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85 | * |
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86 | * case MyParserConstants.ID : return new IDToken(); |
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87 | * |
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88 | * to the following switch statement. Then you can cast matchedToken |
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89 | * variable to the appropriate type and use it in your lexical actions. |
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90 | */ |
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91 | public static final Token newToken(int ofKind) |
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92 | { |
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93 | switch(ofKind) |
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94 | { |
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95 | default : return new Token(); |
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96 | } |
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97 | } |
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98 | |
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99 | } |
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