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