1 | /**
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2 | * @fileoverview Define the cursor which iterates tokens only, with inflated range.
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3 | * @author Toru Nagashima
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4 | */
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5 | ;
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6 |
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7 | //------------------------------------------------------------------------------
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8 | // Requirements
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9 | //------------------------------------------------------------------------------
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10 |
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11 | const ForwardTokenCursor = require("./forward-token-cursor");
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12 |
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13 | //------------------------------------------------------------------------------
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14 | // Exports
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15 | //------------------------------------------------------------------------------
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16 |
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17 | /**
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18 | * The cursor which iterates tokens only, with inflated range.
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19 | * This is for the backward compatibility of padding options.
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20 | */
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21 | module.exports = class PaddedTokenCursor extends ForwardTokenCursor {
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22 |
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23 | /**
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24 | * Initializes this cursor.
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25 | * @param {Token[]} tokens The array of tokens.
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26 | * @param {Comment[]} comments The array of comments.
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27 | * @param {Object} indexMap The map from locations to indices in `tokens`.
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28 | * @param {number} startLoc The start location of the iteration range.
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29 | * @param {number} endLoc The end location of the iteration range.
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30 | * @param {number} beforeCount The number of tokens this cursor iterates before start.
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31 | * @param {number} afterCount The number of tokens this cursor iterates after end.
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32 | */
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33 | constructor(tokens, comments, indexMap, startLoc, endLoc, beforeCount, afterCount) {
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34 | super(tokens, comments, indexMap, startLoc, endLoc);
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35 | this.index = Math.max(0, this.index - beforeCount);
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36 | this.indexEnd = Math.min(tokens.length - 1, this.indexEnd + afterCount);
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37 | }
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38 | };
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