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node_modules/eslint/lib/source-code/token-store/padded-token-cursor.js

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+/**
+ * @fileoverview Define the cursor which iterates tokens only, with inflated range.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const ForwardTokenCursor = require("./forward-token-cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens only, with inflated range.
+ * This is for the backward compatibility of padding options.
+ */
+module.exports = class PaddedTokenCursor extends ForwardTokenCursor {
+
+    /**
+     * 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.
+     * @param {number} beforeCount - The number of tokens this cursor iterates before start.
+     * @param {number} afterCount - The number of tokens this cursor iterates after end.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc, beforeCount, afterCount) {
+        super(tokens, comments, indexMap, startLoc, endLoc);
+        this.index = Math.max(0, this.index - beforeCount);
+        this.indexEnd = Math.min(tokens.length - 1, this.indexEnd + afterCount);
+    }
+};