1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 /** 6 * @fileoverview General utility functions for rule stores. 7 */ 8 9 goog.provide('cvox.StoreUtil'); 10 11 12 /** 13 * Count list of nodes and concatenate this with the context string. 14 * Returns a closure with a local state. 15 * @param {Array.<Node>} nodes A node array. 16 * @param {?string} context A context string. 17 * @return {function(): string} A function returning a string. 18 */ 19 cvox.StoreUtil.nodeCounter = function(nodes, context) { 20 // Local state. 21 var localLength = nodes.length; 22 var localCounter = 0; 23 var localContext = context; 24 if (!context) { 25 localContext = ''; 26 } 27 return function() { 28 if (localCounter < localLength) { 29 localCounter += 1; 30 } 31 return localContext + ' ' + localCounter; 32 }; 33 }; 34
