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codeql-action/node_modules/eslint/lib/source-code/token-store/forward-token-cursor.js
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/** | |
* @fileoverview Define the cursor which iterates tokens only. | |
* @author Toru Nagashima | |
*/ | |
"use strict"; | |
//------------------------------------------------------------------------------ | |
// Requirements | |
//------------------------------------------------------------------------------ | |
const Cursor = require("./cursor"); | |
const utils = require("./utils"); | |
//------------------------------------------------------------------------------ | |
// Exports | |
//------------------------------------------------------------------------------ | |
/** | |
* The cursor which iterates tokens only. | |
*/ | |
module.exports = class ForwardTokenCursor extends Cursor { | |
/** | |
* Initializes this cursor. | |
* @param {Token[]} tokens The array of tokens. | |
* @param {Comment[]} comments The array of comments. | |
* @param {Object} indexMap The map from locations to indices in `tokens`. | |
* @param {number} startLoc The start location of the iteration range. | |
* @param {number} endLoc The end location of the iteration range. | |
*/ | |
constructor(tokens, comments, indexMap, startLoc, endLoc) { | |
super(); | |
this.tokens = tokens; | |
this.index = utils.getFirstIndex(tokens, indexMap, startLoc); | |
this.indexEnd = utils.getLastIndex(tokens, indexMap, endLoc); | |
} | |
/** @inheritdoc */ | |
moveNext() { | |
if (this.index <= this.indexEnd) { | |
this.current = this.tokens[this.index]; | |
this.index += 1; | |
return true; | |
} | |
return false; | |
} | |
/* | |
* | |
* Shorthand for performance. | |
* | |
*/ | |
/** @inheritdoc */ | |
getOneToken() { | |
return (this.index <= this.indexEnd) ? this.tokens[this.index] : null; | |
} | |
/** @inheritdoc */ | |
getAllTokens() { | |
return this.tokens.slice(this.index, this.indexEnd + 1); | |
} | |
}; |