40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
/**
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* @fileoverview Define the cursor which limits the number of tokens.
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* @author Toru Nagashima
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const DecorativeCursor = require("./decorative-cursor");
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//------------------------------------------------------------------------------
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// Exports
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//------------------------------------------------------------------------------
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/**
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* The decorative cursor which limits the number of tokens.
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*/
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module.exports = class LimitCursor extends DecorativeCursor {
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/**
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* Initializes this cursor.
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* @param {Cursor} cursor The cursor to be decorated.
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* @param {number} count The count of tokens this cursor iterates.
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*/
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constructor(cursor, count) {
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super(cursor);
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this.count = count;
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}
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/** @inheritdoc */
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moveNext() {
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if (this.count > 0) {
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this.count -= 1;
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return super.moveNext();
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}
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return false;
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}
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};
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