From 5ed62d23b4bbbf7717de4adfa0eaf2af19365408 Mon Sep 17 00:00:00 2001 From: Brian Picciano Date: Mon, 12 Nov 2018 16:18:45 -0500 Subject: add viz 2 post --- assets/viz/2/goog/array/array.js | 1665 +++++++++++++ assets/viz/2/goog/asserts/asserts.js | 369 +++ assets/viz/2/goog/base.js | 2727 +++++++++++++++++++++ assets/viz/2/goog/debug/entrypointregistry.js | 159 ++ assets/viz/2/goog/debug/error.js | 63 + assets/viz/2/goog/deps.js | 1508 ++++++++++++ assets/viz/2/goog/disposable/disposable.js | 308 +++ assets/viz/2/goog/disposable/idisposable.js | 45 + assets/viz/2/goog/dom/browserfeature.js | 73 + assets/viz/2/goog/dom/dom.js | 2992 ++++++++++++++++++++++++ assets/viz/2/goog/dom/nodetype.js | 48 + assets/viz/2/goog/dom/safe.js | 372 +++ assets/viz/2/goog/dom/tagname.js | 160 ++ assets/viz/2/goog/dom/tags.js | 41 + assets/viz/2/goog/events/browserevent.js | 402 ++++ assets/viz/2/goog/events/browserfeature.js | 84 + assets/viz/2/goog/events/event.js | 145 ++ assets/viz/2/goog/events/eventid.js | 46 + assets/viz/2/goog/events/events.js | 989 ++++++++ assets/viz/2/goog/events/eventtype.js | 239 ++ assets/viz/2/goog/events/listenable.js | 338 +++ assets/viz/2/goog/events/listener.js | 131 ++ assets/viz/2/goog/events/listenermap.js | 306 +++ assets/viz/2/goog/fs/url.js | 110 + assets/viz/2/goog/html/safehtml.js | 948 ++++++++ assets/viz/2/goog/html/safescript.js | 234 ++ assets/viz/2/goog/html/safestyle.js | 449 ++++ assets/viz/2/goog/html/safestylesheet.js | 278 +++ assets/viz/2/goog/html/safeurl.js | 412 ++++ assets/viz/2/goog/html/trustedresourceurl.js | 244 ++ assets/viz/2/goog/html/uncheckedconversions.js | 232 ++ assets/viz/2/goog/i18n/bidi.js | 876 +++++++ assets/viz/2/goog/labs/useragent/browser.js | 338 +++ assets/viz/2/goog/labs/useragent/engine.js | 156 ++ assets/viz/2/goog/labs/useragent/platform.js | 160 ++ assets/viz/2/goog/labs/useragent/util.js | 147 ++ assets/viz/2/goog/math/coordinate.js | 268 +++ assets/viz/2/goog/math/integer.js | 807 +++++++ assets/viz/2/goog/math/long.js | 843 +++++++ assets/viz/2/goog/math/math.js | 447 ++++ assets/viz/2/goog/math/size.js | 227 ++ assets/viz/2/goog/object/object.js | 705 ++++++ assets/viz/2/goog/reflect/reflect.js | 138 ++ assets/viz/2/goog/string/const.js | 182 ++ assets/viz/2/goog/string/string.js | 1631 +++++++++++++ assets/viz/2/goog/string/stringbuffer.js | 103 + assets/viz/2/goog/string/stringformat.js | 221 ++ assets/viz/2/goog/string/typedstring.js | 48 + assets/viz/2/goog/useragent/useragent.js | 568 +++++ 49 files changed, 23982 insertions(+) create mode 100644 assets/viz/2/goog/array/array.js create mode 100644 assets/viz/2/goog/asserts/asserts.js create mode 100644 assets/viz/2/goog/base.js create mode 100644 assets/viz/2/goog/debug/entrypointregistry.js create mode 100644 assets/viz/2/goog/debug/error.js create mode 100644 assets/viz/2/goog/deps.js create mode 100644 assets/viz/2/goog/disposable/disposable.js create mode 100644 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assets/viz/2/goog/html/safescript.js create mode 100644 assets/viz/2/goog/html/safestyle.js create mode 100644 assets/viz/2/goog/html/safestylesheet.js create mode 100644 assets/viz/2/goog/html/safeurl.js create mode 100644 assets/viz/2/goog/html/trustedresourceurl.js create mode 100644 assets/viz/2/goog/html/uncheckedconversions.js create mode 100644 assets/viz/2/goog/i18n/bidi.js create mode 100644 assets/viz/2/goog/labs/useragent/browser.js create mode 100644 assets/viz/2/goog/labs/useragent/engine.js create mode 100644 assets/viz/2/goog/labs/useragent/platform.js create mode 100644 assets/viz/2/goog/labs/useragent/util.js create mode 100644 assets/viz/2/goog/math/coordinate.js create mode 100644 assets/viz/2/goog/math/integer.js create mode 100644 assets/viz/2/goog/math/long.js create mode 100644 assets/viz/2/goog/math/math.js create mode 100644 assets/viz/2/goog/math/size.js create mode 100644 assets/viz/2/goog/object/object.js create mode 100644 assets/viz/2/goog/reflect/reflect.js create mode 100644 assets/viz/2/goog/string/const.js create mode 100644 assets/viz/2/goog/string/string.js create mode 100644 assets/viz/2/goog/string/stringbuffer.js create mode 100644 assets/viz/2/goog/string/stringformat.js create mode 100644 assets/viz/2/goog/string/typedstring.js create mode 100644 assets/viz/2/goog/useragent/useragent.js (limited to 'assets/viz/2/goog') diff --git a/assets/viz/2/goog/array/array.js b/assets/viz/2/goog/array/array.js new file mode 100644 index 0000000..4fdfcaf --- /dev/null +++ b/assets/viz/2/goog/array/array.js @@ -0,0 +1,1665 @@ +// Copyright 2006 The Closure Library Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS-IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +/** + * @fileoverview Utilities for manipulating arrays. + * + * @author arv@google.com (Erik Arvidsson) + */ + + +goog.provide('goog.array'); + +goog.require('goog.asserts'); + + +/** + * @define {boolean} NATIVE_ARRAY_PROTOTYPES indicates whether the code should + * rely on Array.prototype functions, if available. + * + * The Array.prototype functions can be defined by external libraries like + * Prototype and setting this flag to false forces closure to use its own + * goog.array implementation. + * + * If your javascript can be loaded by a third party site and you are wary about + * relying on the prototype functions, specify + * "--define goog.NATIVE_ARRAY_PROTOTYPES=false" to the JSCompiler. + * + * Setting goog.TRUSTED_SITE to false will automatically set + * NATIVE_ARRAY_PROTOTYPES to false. + */ +goog.define('goog.NATIVE_ARRAY_PROTOTYPES', goog.TRUSTED_SITE); + + +/** + * @define {boolean} If true, JSCompiler will use the native implementation of + * array functions where appropriate (e.g., {@code Array#filter}) and remove the + * unused pure JS implementation. + */ +goog.define('goog.array.ASSUME_NATIVE_FUNCTIONS', false); + + +/** + * Returns the last element in an array without removing it. + * Same as goog.array.last. + * @param {IArrayLike|string} array The array. + * @return {T} Last item in array. + * @template T + */ +goog.array.peek = function(array) { + return array[array.length - 1]; +}; + + +/** + * Returns the last element in an array without removing it. + * Same as goog.array.peek. + * @param {IArrayLike|string} array The array. + * @return {T} Last item in array. + * @template T + */ +goog.array.last = goog.array.peek; + +// NOTE(arv): Since most of the array functions are generic it allows you to +// pass an array-like object. Strings have a length and are considered array- +// like. However, the 'in' operator does not work on strings so we cannot just +// use the array path even if the browser supports indexing into strings. We +// therefore end up splitting the string. + + +/** + * Returns the index of the first element of an array with a specified value, or + * -1 if the element is not present in the array. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-indexof} + * + * @param {IArrayLike|string} arr The array to be searched. + * @param {T} obj The object for which we are searching. + * @param {number=} opt_fromIndex The index at which to start the search. If + * omitted the search starts at index 0. + * @return {number} The index of the first matching array element. + * @template T + */ +goog.array.indexOf = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.indexOf) ? + function(arr, obj, opt_fromIndex) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.indexOf.call(arr, obj, opt_fromIndex); + } : + function(arr, obj, opt_fromIndex) { + var fromIndex = opt_fromIndex == null ? + 0 : + (opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) : + opt_fromIndex); + + if (goog.isString(arr)) { + // Array.prototype.indexOf uses === so only strings should be found. + if (!goog.isString(obj) || obj.length != 1) { + return -1; + } + return arr.indexOf(obj, fromIndex); + } + + for (var i = fromIndex; i < arr.length; i++) { + if (i in arr && arr[i] === obj) return i; + } + return -1; + }; + + +/** + * Returns the index of the last element of an array with a specified value, or + * -1 if the element is not present in the array. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-lastindexof} + * + * @param {!IArrayLike|string} arr The array to be searched. + * @param {T} obj The object for which we are searching. + * @param {?number=} opt_fromIndex The index at which to start the search. If + * omitted the search starts at the end of the array. + * @return {number} The index of the last matching array element. + * @template T + */ +goog.array.lastIndexOf = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.lastIndexOf) ? + function(arr, obj, opt_fromIndex) { + goog.asserts.assert(arr.length != null); + + // Firefox treats undefined and null as 0 in the fromIndex argument which + // leads it to always return -1 + var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex; + return Array.prototype.lastIndexOf.call(arr, obj, fromIndex); + } : + function(arr, obj, opt_fromIndex) { + var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex; + + if (fromIndex < 0) { + fromIndex = Math.max(0, arr.length + fromIndex); + } + + if (goog.isString(arr)) { + // Array.prototype.lastIndexOf uses === so only strings should be found. + if (!goog.isString(obj) || obj.length != 1) { + return -1; + } + return arr.lastIndexOf(obj, fromIndex); + } + + for (var i = fromIndex; i >= 0; i--) { + if (i in arr && arr[i] === obj) return i; + } + return -1; + }; + + +/** + * Calls a function for each element in an array. Skips holes in the array. + * See {@link http://tinyurl.com/developer-mozilla-org-array-foreach} + * + * @param {IArrayLike|string} arr Array or array like object over + * which to iterate. + * @param {?function(this: S, T, number, ?): ?} f The function to call for every + * element. This function takes 3 arguments (the element, the index and the + * array). The return value is ignored. + * @param {S=} opt_obj The object to be used as the value of 'this' within f. + * @template T,S + */ +goog.array.forEach = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.forEach) ? + function(arr, f, opt_obj) { + goog.asserts.assert(arr.length != null); + + Array.prototype.forEach.call(arr, f, opt_obj); + } : + function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2) { + f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr); + } + } + }; + + +/** + * Calls a function for each element in an array, starting from the last + * element rather than the first. + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this: S, T, number, ?): ?} f The function to call for every + * element. This function + * takes 3 arguments (the element, the index and the array). The return + * value is ignored. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @template T,S + */ +goog.array.forEachRight = function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = l - 1; i >= 0; --i) { + if (i in arr2) { + f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr); + } + } +}; + + +/** + * Calls a function for each element in an array, and if the function returns + * true adds the element to a new array. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-filter} + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?):boolean} f The function to call for + * every element. This function + * takes 3 arguments (the element, the index and the array) and must + * return a Boolean. If the return value is true the element is added to the + * result array. If it is false the element is not included. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @return {!Array} a new array in which only elements that passed the test + * are present. + * @template T,S + */ +goog.array.filter = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.filter) ? + function(arr, f, opt_obj) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.filter.call(arr, f, opt_obj); + } : + function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var res = []; + var resLength = 0; + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2) { + var val = arr2[i]; // in case f mutates arr2 + if (f.call(/** @type {?} */ (opt_obj), val, i, arr)) { + res[resLength++] = val; + } + } + } + return res; + }; + + +/** + * Calls a function for each element in an array and inserts the result into a + * new array. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-map} + * + * @param {IArrayLike|string} arr Array or array like object + * over which to iterate. + * @param {function(this:THIS, VALUE, number, ?): RESULT} f The function to call + * for every element. This function takes 3 arguments (the element, + * the index and the array) and should return something. The result will be + * inserted into a new array. + * @param {THIS=} opt_obj The object to be used as the value of 'this' within f. + * @return {!Array} a new array with the results from f. + * @template THIS, VALUE, RESULT + */ +goog.array.map = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.map) ? + function(arr, f, opt_obj) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.map.call(arr, f, opt_obj); + } : + function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var res = new Array(l); + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2) { + res[i] = f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr); + } + } + return res; + }; + + +/** + * Passes every element of an array into a function and accumulates the result. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-reduce} + * + * For example: + * var a = [1, 2, 3, 4]; + * goog.array.reduce(a, function(r, v, i, arr) {return r + v;}, 0); + * returns 10 + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {function(this:S, R, T, number, ?) : R} f The function to call for + * every element. This function + * takes 4 arguments (the function's previous result or the initial value, + * the value of the current array element, the current array index, and the + * array itself) + * function(previousValue, currentValue, index, array). + * @param {?} val The initial value to pass into the function on the first call. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @return {R} Result of evaluating f repeatedly across the values of the array. + * @template T,S,R + */ +goog.array.reduce = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduce) ? + function(arr, f, val, opt_obj) { + goog.asserts.assert(arr.length != null); + if (opt_obj) { + f = goog.bind(f, opt_obj); + } + return Array.prototype.reduce.call(arr, f, val); + } : + function(arr, f, val, opt_obj) { + var rval = val; + goog.array.forEach(arr, function(val, index) { + rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr); + }); + return rval; + }; + + +/** + * Passes every element of an array into a function and accumulates the result, + * starting from the last element and working towards the first. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-reduceright} + * + * For example: + * var a = ['a', 'b', 'c']; + * goog.array.reduceRight(a, function(r, v, i, arr) {return r + v;}, ''); + * returns 'cba' + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, R, T, number, ?) : R} f The function to call for + * every element. This function + * takes 4 arguments (the function's previous result or the initial value, + * the value of the current array element, the current array index, and the + * array itself) + * function(previousValue, currentValue, index, array). + * @param {?} val The initial value to pass into the function on the first call. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @return {R} Object returned as a result of evaluating f repeatedly across the + * values of the array. + * @template T,S,R + */ +goog.array.reduceRight = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduceRight) ? + function(arr, f, val, opt_obj) { + goog.asserts.assert(arr.length != null); + goog.asserts.assert(f != null); + if (opt_obj) { + f = goog.bind(f, opt_obj); + } + return Array.prototype.reduceRight.call(arr, f, val); + } : + function(arr, f, val, opt_obj) { + var rval = val; + goog.array.forEachRight(arr, function(val, index) { + rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr); + }); + return rval; + }; + + +/** + * Calls f for each element of an array. If any call returns true, some() + * returns true (without checking the remaining elements). If all calls + * return false, some() returns false. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-some} + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call for + * for every element. This function takes 3 arguments (the element, the + * index and the array) and should return a boolean. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @return {boolean} true if any element passes the test. + * @template T,S + */ +goog.array.some = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.some) ? + function(arr, f, opt_obj) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.some.call(arr, f, opt_obj); + } : + function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) { + return true; + } + } + return false; + }; + + +/** + * Call f for each element of an array. If all calls return true, every() + * returns true. If any call returns false, every() returns false and + * does not continue to check the remaining elements. + * + * See {@link http://tinyurl.com/developer-mozilla-org-array-every} + * + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call for + * for every element. This function takes 3 arguments (the element, the + * index and the array) and should return a boolean. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within f. + * @return {boolean} false if any element fails the test. + * @template T,S + */ +goog.array.every = goog.NATIVE_ARRAY_PROTOTYPES && + (goog.array.ASSUME_NATIVE_FUNCTIONS || Array.prototype.every) ? + function(arr, f, opt_obj) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.every.call(arr, f, opt_obj); + } : + function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2 && !f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) { + return false; + } + } + return true; + }; + + +/** + * Counts the array elements that fulfill the predicate, i.e. for which the + * callback function returns true. Skips holes in the array. + * + * @param {!IArrayLike|string} arr Array or array like object + * over which to iterate. + * @param {function(this: S, T, number, ?): boolean} f The function to call for + * every element. Takes 3 arguments (the element, the index and the array). + * @param {S=} opt_obj The object to be used as the value of 'this' within f. + * @return {number} The number of the matching elements. + * @template T,S + */ +goog.array.count = function(arr, f, opt_obj) { + var count = 0; + goog.array.forEach(arr, function(element, index, arr) { + if (f.call(/** @type {?} */ (opt_obj), element, index, arr)) { + ++count; + } + }, opt_obj); + return count; +}; + + +/** + * Search an array for the first element that satisfies a given condition and + * return that element. + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call + * for every element. This function takes 3 arguments (the element, the + * index and the array) and should return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {T|null} The first array element that passes the test, or null if no + * element is found. + * @template T,S + */ +goog.array.find = function(arr, f, opt_obj) { + var i = goog.array.findIndex(arr, f, opt_obj); + return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i]; +}; + + +/** + * Search an array for the first element that satisfies a given condition and + * return its index. + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call for + * every element. This function + * takes 3 arguments (the element, the index and the array) and should + * return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {number} The index of the first array element that passes the test, + * or -1 if no element is found. + * @template T,S + */ +goog.array.findIndex = function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = 0; i < l; i++) { + if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) { + return i; + } + } + return -1; +}; + + +/** + * Search an array (in reverse order) for the last element that satisfies a + * given condition and return that element. + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call + * for every element. This function + * takes 3 arguments (the element, the index and the array) and should + * return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {T|null} The last array element that passes the test, or null if no + * element is found. + * @template T,S + */ +goog.array.findRight = function(arr, f, opt_obj) { + var i = goog.array.findIndexRight(arr, f, opt_obj); + return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i]; +}; + + +/** + * Search an array (in reverse order) for the last element that satisfies a + * given condition and return its index. + * @param {IArrayLike|string} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call + * for every element. This function + * takes 3 arguments (the element, the index and the array) and should + * return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {number} The index of the last array element that passes the test, + * or -1 if no element is found. + * @template T,S + */ +goog.array.findIndexRight = function(arr, f, opt_obj) { + var l = arr.length; // must be fixed during loop... see docs + var arr2 = goog.isString(arr) ? arr.split('') : arr; + for (var i = l - 1; i >= 0; i--) { + if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) { + return i; + } + } + return -1; +}; + + +/** + * Whether the array contains the given object. + * @param {IArrayLike|string} arr The array to test for the presence of the + * element. + * @param {*} obj The object for which to test. + * @return {boolean} true if obj is present. + */ +goog.array.contains = function(arr, obj) { + return goog.array.indexOf(arr, obj) >= 0; +}; + + +/** + * Whether the array is empty. + * @param {IArrayLike|string} arr The array to test. + * @return {boolean} true if empty. + */ +goog.array.isEmpty = function(arr) { + return arr.length == 0; +}; + + +/** + * Clears the array. + * @param {IArrayLike} arr Array or array like object to clear. + */ +goog.array.clear = function(arr) { + // For non real arrays we don't have the magic length so we delete the + // indices. + if (!goog.isArray(arr)) { + for (var i = arr.length - 1; i >= 0; i--) { + delete arr[i]; + } + } + arr.length = 0; +}; + + +/** + * Pushes an item into an array, if it's not already in the array. + * @param {Array} arr Array into which to insert the item. + * @param {T} obj Value to add. + * @template T + */ +goog.array.insert = function(arr, obj) { + if (!goog.array.contains(arr, obj)) { + arr.push(obj); + } +}; + + +/** + * Inserts an object at the given index of the array. + * @param {IArrayLike} arr The array to modify. + * @param {*} obj The object to insert. + * @param {number=} opt_i The index at which to insert the object. If omitted, + * treated as 0. A negative index is counted from the end of the array. + */ +goog.array.insertAt = function(arr, obj, opt_i) { + goog.array.splice(arr, opt_i, 0, obj); +}; + + +/** + * Inserts at the given index of the array, all elements of another array. + * @param {IArrayLike} arr The array to modify. + * @param {IArrayLike} elementsToAdd The array of elements to add. + * @param {number=} opt_i The index at which to insert the object. If omitted, + * treated as 0. A negative index is counted from the end of the array. + */ +goog.array.insertArrayAt = function(arr, elementsToAdd, opt_i) { + goog.partial(goog.array.splice, arr, opt_i, 0).apply(null, elementsToAdd); +}; + + +/** + * Inserts an object into an array before a specified object. + * @param {Array} arr The array to modify. + * @param {T} obj The object to insert. + * @param {T=} opt_obj2 The object before which obj should be inserted. If obj2 + * is omitted or not found, obj is inserted at the end of the array. + * @template T + */ +goog.array.insertBefore = function(arr, obj, opt_obj2) { + var i; + if (arguments.length == 2 || (i = goog.array.indexOf(arr, opt_obj2)) < 0) { + arr.push(obj); + } else { + goog.array.insertAt(arr, obj, i); + } +}; + + +/** + * Removes the first occurrence of a particular value from an array. + * @param {IArrayLike} arr Array from which to remove + * value. + * @param {T} obj Object to remove. + * @return {boolean} True if an element was removed. + * @template T + */ +goog.array.remove = function(arr, obj) { + var i = goog.array.indexOf(arr, obj); + var rv; + if ((rv = i >= 0)) { + goog.array.removeAt(arr, i); + } + return rv; +}; + + +/** + * Removes the last occurrence of a particular value from an array. + * @param {!IArrayLike} arr Array from which to remove value. + * @param {T} obj Object to remove. + * @return {boolean} True if an element was removed. + * @template T + */ +goog.array.removeLast = function(arr, obj) { + var i = goog.array.lastIndexOf(arr, obj); + if (i >= 0) { + goog.array.removeAt(arr, i); + return true; + } + return false; +}; + + +/** + * Removes from an array the element at index i + * @param {IArrayLike} arr Array or array like object from which to + * remove value. + * @param {number} i The index to remove. + * @return {boolean} True if an element was removed. + */ +goog.array.removeAt = function(arr, i) { + goog.asserts.assert(arr.length != null); + + // use generic form of splice + // splice returns the removed items and if successful the length of that + // will be 1 + return Array.prototype.splice.call(arr, i, 1).length == 1; +}; + + +/** + * Removes the first value that satisfies the given condition. + * @param {IArrayLike} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call + * for every element. This function + * takes 3 arguments (the element, the index and the array) and should + * return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {boolean} True if an element was removed. + * @template T,S + */ +goog.array.removeIf = function(arr, f, opt_obj) { + var i = goog.array.findIndex(arr, f, opt_obj); + if (i >= 0) { + goog.array.removeAt(arr, i); + return true; + } + return false; +}; + + +/** + * Removes all values that satisfy the given condition. + * @param {IArrayLike} arr Array or array + * like object over which to iterate. + * @param {?function(this:S, T, number, ?) : boolean} f The function to call + * for every element. This function + * takes 3 arguments (the element, the index and the array) and should + * return a boolean. + * @param {S=} opt_obj An optional "this" context for the function. + * @return {number} The number of items removed + * @template T,S + */ +goog.array.removeAllIf = function(arr, f, opt_obj) { + var removedCount = 0; + goog.array.forEachRight(arr, function(val, index) { + if (f.call(/** @type {?} */ (opt_obj), val, index, arr)) { + if (goog.array.removeAt(arr, index)) { + removedCount++; + } + } + }); + return removedCount; +}; + + +/** + * Returns a new array that is the result of joining the arguments. If arrays + * are passed then their items are added, however, if non-arrays are passed they + * will be added to the return array as is. + * + * Note that ArrayLike objects will be added as is, rather than having their + * items added. + * + * goog.array.concat([1, 2], [3, 4]) -> [1, 2, 3, 4] + * goog.array.concat(0, [1, 2]) -> [0, 1, 2] + * goog.array.concat([1, 2], null) -> [1, 2, null] + * + * There is bug in all current versions of IE (6, 7 and 8) where arrays created + * in an iframe become corrupted soon (not immediately) after the iframe is + * destroyed. This is common if loading data via goog.net.IframeIo, for example. + * This corruption only affects the concat method which will start throwing + * Catastrophic Errors (#-2147418113). + * + * See http://endoflow.com/scratch/corrupted-arrays.html for a test case. + * + * Internally goog.array should use this, so that all methods will continue to + * work on these broken array objects. + * + * @param {...*} var_args Items to concatenate. Arrays will have each item + * added, while primitives and objects will be added as is. + * @return {!Array} The new resultant array. + */ +goog.array.concat = function(var_args) { + return Array.prototype.concat.apply(Array.prototype, arguments); +}; + + +/** + * Returns a new array that contains the contents of all the arrays passed. + * @param {...!Array} var_args + * @return {!Array} + * @template T + */ +goog.array.join = function(var_args) { + return Array.prototype.concat.apply(Array.prototype, arguments); +}; + + +/** + * Converts an object to an array. + * @param {IArrayLike|string} object The object to convert to an + * array. + * @return {!Array} The object converted into an array. If object has a + * length property, every property indexed with a non-negative number + * less than length will be included in the result. If object does not + * have a length property, an empty array will be returned. + * @template T + */ +goog.array.toArray = function(object) { + var length = object.length; + + // If length is not a number the following it false. This case is kept for + // backwards compatibility since there are callers that pass objects that are + // not array like. + if (length > 0) { + var rv = new Array(length); + for (var i = 0; i < length; i++) { + rv[i] = object[i]; + } + return rv; + } + return []; +}; + + +/** + * Does a shallow copy of an array. + * @param {IArrayLike|string} arr Array or array-like object to + * clone. + * @return {!Array} Clone of the input array. + * @template T + */ +goog.array.clone = goog.array.toArray; + + +/** + * Extends an array with another array, element, or "array like" object. + * This function operates 'in-place', it does not create a new Array. + * + * Example: + * var a = []; + * goog.array.extend(a, [0, 1]); + * a; // [0, 1] + * goog.array.extend(a, 2); + * a; // [0, 1, 2] + * + * @param {Array} arr1 The array to modify. + * @param {...(Array|VALUE)} var_args The elements or arrays of elements + * to add to arr1. + * @template VALUE + */ +goog.array.extend = function(arr1, var_args) { + for (var i = 1; i < arguments.length; i++) { + var arr2 = arguments[i]; + if (goog.isArrayLike(arr2)) { + var len1 = arr1.length || 0; + var len2 = arr2.length || 0; + arr1.length = len1 + len2; + for (var j = 0; j < len2; j++) { + arr1[len1 + j] = arr2[j]; + } + } else { + arr1.push(arr2); + } + } +}; + + +/** + * Adds or removes elements from an array. This is a generic version of Array + * splice. This means that it might work on other objects similar to arrays, + * such as the arguments object. + * + * @param {IArrayLike} arr The array to modify. + * @param {number|undefined} index The index at which to start changing the + * array. If not defined, treated as 0. + * @param {number} howMany How many elements to remove (0 means no removal. A + * value below 0 is treated as zero and so is any other non number. Numbers + * are floored). + * @param {...T} var_args Optional, additional elements to insert into the + * array. + * @return {!Array} the removed elements. + * @template T + */ +goog.array.splice = function(arr, index, howMany, var_args) { + goog.asserts.assert(arr.length != null); + + return Array.prototype.splice.apply(arr, goog.array.slice(arguments, 1)); +}; + + +/** + * Returns a new array from a segment of an array. This is a generic version of + * Array slice. This means that it might work on other objects similar to + * arrays, such as the arguments object. + * + * @param {IArrayLike|string} arr The array from + * which to copy a segment. + * @param {number} start The index of the first element to copy. + * @param {number=} opt_end The index after the last element to copy. + * @return {!Array} A new array containing the specified segment of the + * original array. + * @template T + */ +goog.array.slice = function(arr, start, opt_end) { + goog.asserts.assert(arr.length != null); + + // passing 1 arg to slice is not the same as passing 2 where the second is + // null or undefined (in that case the second argument is treated as 0). + // we could use slice on the arguments object and then use apply instead of + // testing the length + if (arguments.length <= 2) { + return Array.prototype.slice.call(arr, start); + } else { + return Array.prototype.slice.call(arr, start, opt_end); + } +}; + + +/** + * Removes all duplicates from an array (retaining only the first + * occurrence of each array element). This function modifies the + * array in place and doesn't change the order of the non-duplicate items. + * + * For objects, duplicates are identified as having the same unique ID as + * defined by {@link goog.getUid}. + * + * Alternatively you can specify a custom hash function that returns a unique + * value for each item in the array it should consider unique. + * + * Runtime: N, + * Worstcase space: 2N (no dupes) + * + * @param {IArrayLike} arr The array from which to remove + * duplicates. + * @param {Array=} opt_rv An optional array in which to return the results, + * instead of performing the removal inplace. If specified, the original + * array will remain unchanged. + * @param {function(T):string=} opt_hashFn An optional function to use to + * apply to every item in the array. This function should return a unique + * value for each item in the array it should consider unique. + * @template T + */ +goog.array.removeDuplicates = function(arr, opt_rv, opt_hashFn) { + var returnArray = opt_rv || arr; + var defaultHashFn = function(item) { + // Prefix each type with a single character representing the type to + // prevent conflicting keys (e.g. true and 'true'). + return goog.isObject(item) ? 'o' + goog.getUid(item) : + (typeof item).charAt(0) + item; + }; + var hashFn = opt_hashFn || defaultHashFn; + + var seen = {}, cursorInsert = 0, cursorRead = 0; + while (cursorRead < arr.length) { + var current = arr[cursorRead++]; + var key = hashFn(current); + if (!Object.prototype.hasOwnProperty.call(seen, key)) { + seen[key] = true; + returnArray[cursorInsert++] = current; + } + } + returnArray.length = cursorInsert; +}; + + +/** + * Searches the specified array for the specified target using the binary + * search algorithm. If no opt_compareFn is specified, elements are compared + * using goog.array.defaultCompare, which compares the elements + * using the built in < and > operators. This will produce the expected + * behavior for homogeneous arrays of String(s) and Number(s). The array + * specified must be sorted in ascending order (as defined by the + * comparison function). If the array is not sorted, results are undefined. + * If the array contains multiple instances of the specified target value, any + * of these instances may be found. + * + * Runtime: O(log n) + * + * @param {IArrayLike} arr The array to be searched. + * @param {TARGET} target The sought value. + * @param {function(TARGET, VALUE): number=} opt_compareFn Optional comparison + * function by which the array is ordered. Should take 2 arguments to + * compare, and return a negative number, zero, or a positive number + * depending on whether the first argument is less than, equal to, or + * greater than the second. + * @return {number} Lowest index of the target value if found, otherwise + * (-(insertion point) - 1). The insertion point is where the value should + * be inserted into arr to preserve the sorted property. Return value >= 0 + * iff target is found. + * @template TARGET, VALUE + */ +goog.array.binarySearch = function(arr, target, opt_compareFn) { + return goog.array.binarySearch_( + arr, opt_compareFn || goog.array.defaultCompare, false /* isEvaluator */, + target); +}; + + +/** + * Selects an index in the specified array using the binary search algorithm. + * The evaluator receives an element and determines whether the desired index + * is before, at, or after it. The evaluator must be consistent (formally, + * goog.array.map(goog.array.map(arr, evaluator, opt_obj), goog.math.sign) + * must be monotonically non-increasing). + * + * Runtime: O(log n) + * + * @param {IArrayLike} arr The array to be searched. + * @param {function(this:THIS, VALUE, number, ?): number} evaluator + * Evaluator function that receives 3 arguments (the element, the index and + * the array). Should return a negative number, zero, or a positive number + * depending on whether the desired index is before, at, or after the + * element passed to it. + * @param {THIS=} opt_obj The object to be used as the value of 'this' + * within evaluator. + * @return {number} Index of the leftmost element matched by the evaluator, if + * such exists; otherwise (-(insertion point) - 1). The insertion point is + * the index of the first element for which the evaluator returns negative, + * or arr.length if no such element exists. The return value is non-negative + * iff a match is found. + * @template THIS, VALUE + */ +goog.array.binarySelect = function(arr, evaluator, opt_obj) { + return goog.array.binarySearch_( + arr, evaluator, true /* isEvaluator */, undefined /* opt_target */, + opt_obj); +}; + + +/** + * Implementation of a binary search algorithm which knows how to use both + * comparison functions and evaluators. If an evaluator is provided, will call + * the evaluator with the given optional data object, conforming to the + * interface defined in binarySelect. Otherwise, if a comparison function is + * provided, will call the comparison function against the given data object. + * + * This implementation purposefully does not use goog.bind or goog.partial for + * performance reasons. + * + * Runtime: O(log n) + * + * @param {IArrayLike} arr The array to be searched. + * @param {function(?, ?, ?): number | function(?, ?): number} compareFn + * Either an evaluator or a comparison function, as defined by binarySearch + * and binarySelect above. + * @param {boolean} isEvaluator Whether the function is an evaluator or a + * comparison function. + * @param {?=} opt_target If the function is a comparison function, then + * this is the target to binary search for. + * @param {Object=} opt_selfObj If the function is an evaluator, this is an + * optional this object for the evaluator. + * @return {number} Lowest index of the target value if found, otherwise + * (-(insertion point) - 1). The insertion point is where the value should + * be inserted into arr to preserve the sorted property. Return value >= 0 + * iff target is found. + * @private + */ +goog.array.binarySearch_ = function( + arr, compareFn, isEvaluator, opt_target, opt_selfObj) { + var left = 0; // inclusive + var right = arr.length; // exclusive + var found; + while (left < right) { + var middle = (left + right) >> 1; + var compareResult; + if (isEvaluator) { + compareResult = compareFn.call(opt_selfObj, arr[middle], middle, arr); + } else { + // NOTE(dimvar): To avoid this cast, we'd have to use function overloading + // for the type of binarySearch_, which the type system can't express yet. + compareResult = /** @type {function(?, ?): number} */ (compareFn)( + opt_target, arr[middle]); + } + if (compareResult > 0) { + left = middle + 1; + } else { + right = middle; + // We are looking for the lowest index so we can't return immediately. + found = !compareResult; + } + } + // left is the index if found, or the insertion point otherwise. + // ~left is a shorthand for -left - 1. + return found ? left : ~left; +}; + + +/** + * Sorts the specified array into ascending order. If no opt_compareFn is + * specified, elements are compared using + * goog.array.defaultCompare, which compares the elements using + * the built in < and > operators. This will produce the expected behavior + * for homogeneous arrays of String(s) and Number(s), unlike the native sort, + * but will give unpredictable results for heterogeneous lists of strings and + * numbers with different numbers of digits. + * + * This sort is not guaranteed to be stable. + * + * Runtime: Same as Array.prototype.sort + * + * @param {Array} arr The array to be sorted. + * @param {?function(T,T):number=} opt_compareFn Optional comparison + * function by which the + * array is to be ordered. Should take 2 arguments to compare, and return a + * negative number, zero, or a positive number depending on whether the + * first argument is less than, equal to, or greater than the second. + * @template T + */ +goog.array.sort = function(arr, opt_compareFn) { + // TODO(arv): Update type annotation since null is not accepted. + arr.sort(opt_compareFn || goog.array.defaultCompare); +}; + + +/** + * Sorts the specified array into ascending order in a stable way. If no + * opt_compareFn is specified, elements are compared using + * goog.array.defaultCompare, which compares the elements using + * the built in < and > operators. This will produce the expected behavior + * for homogeneous arrays of String(s) and Number(s). + * + * Runtime: Same as Array.prototype.sort, plus an additional + * O(n) overhead of copying the array twice. + * + * @param {Array} arr The array to be sorted. + * @param {?function(T, T): number=} opt_compareFn Optional comparison function + * by which the array is to be ordered. Should take 2 arguments to compare, + * and return a negative number, zero, or a positive number depending on + * whether the first argument is less than, equal to, or greater than the + * second. + * @template T + */ +goog.array.stableSort = function(arr, opt_compareFn) { + var compArr = new Array(arr.length); + for (var i = 0; i < arr.length; i++) { + compArr[i] = {index: i, value: arr[i]}; + } + var valueCompareFn = opt_compareFn || goog.array.defaultCompare; + function stableCompareFn(obj1, obj2) { + return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index; + } + goog.array.sort(compArr, stableCompareFn); + for (var i = 0; i < arr.length; i++) { + arr[i] = compArr[i].value; + } +}; + + +/** + * Sort the specified array into ascending order based on item keys + * returned by the specified key function. + * If no opt_compareFn is specified, the keys are compared in ascending order + * using goog.array.defaultCompare. + * + * Runtime: O(S(f(n)), where S is runtime of goog.array.sort + * and f(n) is runtime of the key function. + * + * @param {Array} arr The array to be sorted. + * @param {function(T): K} keyFn Function taking array element and returning + * a key used for sorting this element. + * @param {?function(K, K): number=} opt_compareFn Optional comparison function + * by which the keys are to be ordered. Should take 2 arguments to compare, + * and return a negative number, zero, or a positive number depending on + * whether the first argument is less than, equal to, or greater than the + * second. + * @template T,K + */ +goog.array.sortByKey = function(arr, keyFn, opt_compareFn) { + var keyCompareFn = opt_compareFn || goog.array.defaultCompare; + goog.array.sort( + arr, function(a, b) { return keyCompareFn(keyFn(a), keyFn(b)); }); +}; + + +/** + * Sorts an array of objects by the specified object key and compare + * function. If no compare function is provided, the key values are + * compared in ascending order using goog.array.defaultCompare. + * This won't work for keys that get renamed by the compiler. So use + * {'foo': 1, 'bar': 2} rather than {foo: 1, bar: 2}. + * @param {Array} arr An array of objects to sort. + * @param {string} key The object key to sort by. + * @param {Function=} opt_compareFn The function to use to compare key + * values. + */ +goog.array.sortObjectsByKey = function(arr, key, opt_compareFn) { + goog.array.sortByKey(arr, function(obj) { return obj[key]; }, opt_compareFn); +}; + + +/** + * Tells if the array is sorted. + * @param {!Array} arr The array. + * @param {?function(T,T):number=} opt_compareFn Function to compare the + * array elements. + * Should take 2 arguments to compare, and return a negative number, zero, + * or a positive number depending on whether the first argument is less + * than, equal to, or greater than the second. + * @param {boolean=} opt_strict If true no equal elements are allowed. + * @return {boolean} Whether the array is sorted. + * @template T + */ +goog.array.isSorted = function(arr, opt_compareFn, opt_strict) { + var compare = opt_compareFn || goog.array.defaultCompare; + for (var i = 1; i < arr.length; i++) { + var compareResult = compare(arr[i - 1], arr[i]); + if (compareResult > 0 || compareResult == 0 && opt_strict) { + return false; + } + } + return true; +}; + + +/** + * Compares two arrays for equality. Two arrays are considered equal if they + * have the same length and their corresponding elements are equal according to + * the comparison function. + * + * @param {IArrayLike} arr1 The first array to compare. + * @param {IArrayLike} arr2 The second array to compare. + * @param {Function=} opt_equalsFn Optional comparison function. + * Should take 2 arguments to compare, and return true if the arguments + * are equal. Defaults to {@link goog.array.defaultCompareEquality} which + * compares the elements using the built-in '===' operator. + * @return {boolean} Whether the two arrays are equal. + */ +goog.array.equals = function(arr1, arr2, opt_equalsFn) { + if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) || + arr1.length != arr2.length) { + return false; + } + var l = arr1.length; + var equalsFn = opt_equalsFn || goog.array.defaultCompareEquality; + for (var i = 0; i < l; i++) { + if (!equalsFn(arr1[i], arr2[i])) { + return false; + } + } + return true; +}; + + +/** + * 3-way array compare function. + * @param {!IArrayLike} arr1 The first array to + * compare. + * @param {!IArrayLike} arr2 The second array to + * compare. + * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison + * function by which the array is to be ordered. Should take 2 arguments to + * compare, and return a negative number, zero, or a positive number + * depending on whether the first argument is less than, equal to, or + * greater than the second. + * @return {number} Negative number, zero, or a positive number depending on + * whether the first argument is less than, equal to, or greater than the + * second. + * @template VALUE + */ +goog.array.compare3 = function(arr1, arr2, opt_compareFn) { + var compare = opt_compareFn || goog.array.defaultCompare; + var l = Math.min(arr1.length, arr2.length); + for (var i = 0; i < l; i++) { + var result = compare(arr1[i], arr2[i]); + if (result != 0) { + return result; + } + } + return goog.array.defaultCompare(arr1.length, arr2.length); +}; + + +/** + * Compares its two arguments for order, using the built in < and > + * operators. + * @param {VALUE} a The first object to be compared. + * @param {VALUE} b The second object to be compared. + * @return {number} A negative number, zero, or a positive number as the first + * argument is less than, equal to, or greater than the second, + * respectively. + * @template VALUE + */ +goog.array.defaultCompare = function(a, b) { + return a > b ? 1 : a < b ? -1 : 0; +}; + + +/** + * Compares its two arguments for inverse order, using the built in < and > + * operators. + * @param {VALUE} a The first object to be compared. + * @param {VALUE} b The second object to be compared. + * @return {number} A negative number, zero, or a positive number as the first + * argument is greater than, equal to, or less than the second, + * respectively. + * @template VALUE + */ +goog.array.inverseDefaultCompare = function(a, b) { + return -goog.array.defaultCompare(a, b); +}; + + +/** + * Compares its two arguments for equality, using the built in === operator. + * @param {*} a The first object to compare. + * @param {*} b The second object to compare. + * @return {boolean} True if the two arguments are equal, false otherwise. + */ +goog.array.defaultCompareEquality = function(a, b) { + return a === b; +}; + + +/** + * Inserts a value into a sorted array. The array is not modified if the + * value is already present. + * @param {IArrayLike} array The array to modify. + * @param {VALUE} value The object to insert. + * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison + * function by which the array is ordered. Should take 2 arguments to + * compare, and return a negative number, zero, or a positive number + * depending on whether the first argument is less than, equal to, or + * greater than the second. + * @return {boolean} True if an element was inserted. + * @template VALUE + */ +goog.array.binaryInsert = function(array, value, opt_compareFn) { + var index = goog.array.binarySearch(array, value, opt_compareFn); + if (index < 0) { + goog.array.insertAt(array, value, -(index + 1)); + return true; + } + return false; +}; + + +/** + * Removes a value from a sorted array. + * @param {!IArrayLike} array The array to modify. + * @param {VALUE} value The object to remove. + * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison + * function by which the array is ordered. Should take 2 arguments to + * compare, and return a negative number, zero, or a positive number + * depending on whether the first argument is less than, equal to, or + * greater than the second. + * @return {boolean} True if an element was removed. + * @template VALUE + */ +goog.array.binaryRemove = function(array, value, opt_compareFn) { + var index = goog.array.binarySearch(array, value, opt_compareFn); + return (index >= 0) ? goog.array.removeAt(array, index) : false; +}; + + +/** + * Splits an array into disjoint buckets according to a splitting function. + * @param {Array} array The array. + * @param {function(this:S, T,number,Array):?} sorter Function to call for + * every element. This takes 3 arguments (the element, the index and the + * array) and must return a valid object key (a string, number, etc), or + * undefined, if that object should not be placed in a bucket. + * @param {S=} opt_obj The object to be used as the value of 'this' within + * sorter. + * @return {!Object} An object, with keys being all of the unique return values + * of sorter, and values being arrays containing the items for + * which the splitter returned that key. + * @template T,S + */ +goog.array.bucket = function(array, sorter, opt_obj) { + var buckets = {}; + + for (var i = 0; i < array.length; i++) { + var value = array[i]; + var key = sorter.call(/** @type {?} */ (opt_obj), value, i, array); + if (goog.isDef(key)) { + // Push the value to the right bucket, creating it if necessary. + var bucket = buckets[key] || (buckets[key] = []); + bucket.push(value); + } + } + + return buckets; +}; + + +/** + * Creates a new object built from the provided array and the key-generation + * function. + * @param {IArrayLike} arr Array or array like object over + * which to iterate whose elements will be the values in the new object. + * @param {?function(this:S, T, number, ?) : string} keyFunc The function to + * call for every element. This function takes 3 arguments (the element, the + * index and the array) and should return a string that will be used as the + * key for the element in the new object. If the function returns the same + * key for more than one element, the value for that key is + * implementation-defined. + * @param {S=} opt_obj The object to be used as the value of 'this' + * within keyFunc. + * @return {!Object} The new object. + * @template T,S + */ +goog.array.toObject = function(arr, keyFunc, opt_obj) { + var ret = {}; + goog.array.forEach(arr, function(element, index) { + ret[keyFunc.call(/** @type {?} */ (opt_obj), element, index, arr)] = + element; + }); + return ret; +}; + + +/** + * Creates a range of numbers in an arithmetic progression. + * + * Range takes 1, 2, or 3 arguments: + * 
+ * range(5) is the same as range(0, 5, 1) and produces [0, 1, 2, 3, 4]
+ * range(2, 5) is the same as range(2, 5, 1) and produces [2, 3, 4]
+ * range(-2, -5, -1) produces [-2, -3, -4]
+ * range(-2, -5, 1) produces [], since stepping by 1 wouldn't ever reach -5.
+ *
+ * + * @param {number} startOrEnd The starting value of the range if an end argument + * is provided. Otherwise, the start value is 0, and this is the end value. + * @param {number=} opt_end The optional end value of the range. + * @param {number=} opt_step The step size between range values. Defaults to 1 + * if opt_step is undefined or 0. + * @return {!Array} An array of numbers for the requested range. May be + * an empty array if adding the step would not converge toward the end + * value. + */ +goog.array.range = function(startOrEnd, opt_end, opt_step) { + var array = []; + var start = 0; + var end = startOrEnd; + var step = opt_step || 1; + if (opt_end !== undefined) { + start = startOrEnd; + end = opt_end; + } + + if (step * (end - start) < 0) { + // Sign mismatch: start + step will never reach the end value. + return []; + } + + if (step > 0) { + for (var i = start; i < end; i += step) { + array.push(i); + } + } else { + for (var i = start; i > end; i += step) { + array.push(i); + } + } + return array; +}; + + +/** + * Returns an array consisting of the given value repeated N times. + * + * @param {VALUE} value The value to repeat. + * @param {number} n The repeat count. + * @return {!Array} An array with the repeated value. + * @template VALUE + */ +goog.array.repeat = function(value, n) { + var array = []; + for (var i = 0; i < n; i++) { + array[i] = value; + } + return array; +}; + + +/** + * Returns an array consisting of every argument with all arrays + * expanded in-place recursively. + * + * @param {...*} var_args The values to flatten. + * @return {!Array} An array containing the flattened values. + */ +goog.array.flatten = function(var_args) { + var CHUNK_SIZE = 8192; + + var result = []; + for (var i = 0; i < arguments.length; i++) { + var element = arguments[i]; + if (goog.isArray(element)) { + for (var c = 0; c < element.length; c += CHUNK_SIZE) { + var chunk = goog.array.slice(element, c, c + CHUNK_SIZE); + var recurseResult = goog.array.flatten.apply(null, chunk); + for (var r = 0; r < recurseResult.length; r++) { + result.push(recurseResult[r]); + } + } + } else { + result.push(element); + } + } + return result; +}; + + +/** + * Rotates an array in-place. After calling this method, the element at + * index i will be the element previously at index (i - n) % + * array.length, for all values of i between 0 and array.length - 1, + * inclusive. + * + * For example, suppose list comprises [t, a, n, k, s]. After invoking + * rotate(array, 1) (or rotate(array, -4)), array will comprise [s, t, a, n, k]. + * + * @param {!Array} array The array to rotate. + * @param {number} n The amount to rotate. + * @return {!Array} The array. + * @template T + */ +goog.array.rotate = function(array, n) { + goog.asserts.assert(array.length != null); + + if (array.length) { + n %= array.length; + if (n > 0) { + Array.prototype.unshift.apply(array, array.splice(-n, n)); + } else if (n < 0) { + Array.prototype.push.apply(array, array.splice(0, -n)); + } + } + return array; +}; + + +/** + * Moves one item of an array to a new position keeping the order of the rest + * of the items. Example use case: keeping a list of JavaScript objects + * synchronized with the corresponding list of DOM elements after one of the + * elements has been dragged to a new position. + * @param {!IArrayLike} arr The array to modify. + * @param {number} fromIndex Index of the item to move between 0 and + * {@code arr.length - 1}. + * @param {number} toIndex Target index between 0 and {@code arr.length - 1}. + */ +goog.array.moveItem = function(arr, fromIndex, toIndex) { + goog.asserts.assert(fromIndex >= 0 && fromIndex < arr.length); + goog.asserts.assert(toIndex >= 0 && toIndex < arr.length); + // Remove 1 item at fromIndex. + var removedItems = Array.prototype.splice.call(arr, fromIndex, 1); + // Insert the removed item at toIndex. + Array.prototype.splice.call(arr, toIndex, 0, removedItems[0]); + // We don't use goog.array.insertAt and goog.array.removeAt, because they're + // significantly slower than splice. +}; + + +/** + * Creates a new array for which the element at position i is an array of the + * ith element of the provided arrays. The returned array will only be as long + * as the shortest array provided; additional values are ignored. For example, + * the result of zipping [1, 2] and [3, 4, 5] is [[1,3], [2, 4]]. + * + * This is similar to the zip() function in Python. See {@link + * http://docs.python.org/library/functions.html#zip} + * + * @param {...!IArrayLike} var_args Arrays to be combined. + * @return {!Array>} A new array of arrays created from + * provided arrays. + */ +goog.array.zip = function(var_args) { + if (!arguments.length) { + return []; + } + var result = []; + var minLen = arguments[0].length; + for (var i = 1; i < arguments.length; i++) { + if (arguments[i].length < minLen) { + minLen = arguments[i].length; + } + } + for (var i = 0; i < minLen; i++) { + var value = []; + for (var j = 0; j < arguments.length; j++) { + value.push(arguments[j][i]); + } + result.push(value); + } + return result; +}; + + +/** + * Shuffles the values in the specified array using the Fisher-Yates in-place + * shuffle (also known as the Knuth Shuffle). By default, calls Math.random() + * and so resets the state of that random number generator. Similarly, may reset + * the state of the any other specified random number generator. + * + * Runtime: O(n) + * + * @param {!Array} arr The array to be shuffled. + * @param {function():number=} opt_randFn Optional random function to use for + * shuffling. + * Takes no arguments, and returns a random number on the interval [0, 1). + * Defaults to Math.random() using JavaScript's built-in Math library. + */ +goog.array.shuffle = function(arr, opt_randFn) { + var randFn = opt_randFn || Math.random; + + for (var i = arr.length - 1; i > 0; i--) { + // Choose a random array index in [0, i] (inclusive with i). + var j = Math.floor(randFn() * (i + 1)); + + var tmp = arr[i]; + arr[i] = arr[j]; + arr[j] = tmp; + } +}; + + +/** + * Returns a new array of elements from arr, based on the indexes of elements + * provided by index_arr. For example, the result of index copying + * ['a', 'b', 'c'] with index_arr [1,0,0,2] is ['b', 'a', 'a', 'c']. + * + * @param {!Array} arr The array to get a indexed copy from. + * @param {!Array} index_arr An array of indexes to get from arr. + * @return {!Array} A new array of elements from arr in index_arr order. + * @template T + */ +goog.array.copyByIndex = function(arr, index_arr) { + var result = []; + goog.array.forEach(index_arr, function(index) { result.push(arr[index]); }); + return result; +}; + + +/** + * Maps each element of the input array into zero or more elements of the output + * array. + * + * @param {!IArrayLike|string} arr Array or array like object + * over which to iterate. + * @param {function(this:THIS, VALUE, number, ?): !Array} f The function + * to call for every element. This function takes 3 arguments (the element, + * the index and the array) and should return an array. The result will be + * used to extend a new array. + * @param {THIS=} opt_obj The object to be used as the value of 'this' within f. + * @return {!Array} a new array with the concatenation of all arrays + * returned from f. + * @template THIS, VALUE, RESULT + */ +goog.array.concatMap = function(arr, f, opt_obj) { + return goog.array.concat.apply([], goog.array.map(arr, f, opt_obj)); +}; diff --git a/assets/viz/2/goog/asserts/asserts.js b/assets/viz/2/goog/asserts/asserts.js new file mode 100644 index 0000000..1f4b653 --- /dev/null +++ b/assets/viz/2/goog/asserts/asserts.js @@ -0,0 +1,369 @@ +// Copyright 2008 The Closure Library Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS-IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +/** + * @fileoverview Utilities to check the preconditions, postconditions and + * invariants runtime. + * + * Methods in this package should be given special treatment by the compiler + * for type-inference. For example, goog.asserts.assert(foo) + * will restrict foo to a truthy value. + * + * The compiler has an option to disable asserts. So code like: + * + * var x = goog.asserts.assert(foo()); goog.asserts.assert(bar()); + * + * will be transformed into: + * + * var x = foo(); + * + * The compiler will leave in foo() (because its return value is used), + * but it will remove bar() because it assumes it does not have side-effects. + * + * @author agrieve@google.com (Andrew Grieve) + */ + +goog.provide('goog.asserts'); +goog.provide('goog.asserts.AssertionError'); + +goog.require('goog.debug.Error'); +goog.require('goog.dom.NodeType'); +goog.require('goog.string'); + + +/** + * @define {boolean} Whether to strip out asserts or to leave them in. + */ +goog.define('goog.asserts.ENABLE_ASSERTS', goog.DEBUG); + + + +/** + * Error object for failed assertions. + * @param {string} messagePattern The pattern that was used to form message. + * @param {!Array<*>} messageArgs The items to substitute into the pattern. + * @constructor + * @extends {goog.debug.Error} + * @final + */ +goog.asserts.AssertionError = function(messagePattern, messageArgs) { + messageArgs.unshift(messagePattern); + goog.debug.Error.call(this, goog.string.subs.apply(null, messageArgs)); + // Remove the messagePattern afterwards to avoid permanently modifying the + // passed in array. + messageArgs.shift(); + + /** + * The message pattern used to format the error message. Error handlers can + * use this to uniquely identify the assertion. + * @type {string} + */ + this.messagePattern = messagePattern; +}; +goog.inherits(goog.asserts.AssertionError, goog.debug.Error); + + +/** @override */ +goog.asserts.AssertionError.prototype.name = 'AssertionError'; + + +/** + * The default error handler. + * @param {!goog.asserts.AssertionError} e The exception to be handled. + */ +goog.asserts.DEFAULT_ERROR_HANDLER = function(e) { + throw e; +}; + + +/** + * The handler responsible for throwing or logging assertion errors. + * @private {function(!goog.asserts.AssertionError)} + */ +goog.asserts.errorHandler_ = goog.asserts.DEFAULT_ERROR_HANDLER; + + +/** + * Throws an exception with the given message and "Assertion failed" prefixed + * onto it. + * @param {string} defaultMessage The message to use if givenMessage is empty. + * @param {Array<*>} defaultArgs The substitution arguments for defaultMessage. + * @param {string|undefined} givenMessage Message supplied by the caller. + * @param {Array<*>} givenArgs The substitution arguments for givenMessage. + * @throws {goog.asserts.AssertionError} When the value is not a number. + * @private + */ +goog.asserts.doAssertFailure_ = function( + defaultMessage, defaultArgs, givenMessage, givenArgs) { + var message = 'Assertion failed'; + if (givenMessage) { + message += ': ' + givenMessage; + var args = givenArgs; + } else if (defaultMessage) { + message += ': ' + defaultMessage; + args = defaultArgs; + } + // The '' + works around an Opera 10 bug in the unit tests. Without it, + // a stack trace is added to var message above. With this, a stack trace is + // not added until this line (it causes the extra garbage to be added after + // the assertion message instead of in the middle of it). + var e = new goog.asserts.AssertionError('' + message, args || []); + goog.asserts.errorHandler_(e); +}; + + +/** + * Sets a custom error handler that can be used to customize the behavior of + * assertion failures, for example by turning all assertion failures into log + * messages. + * @param {function(!goog.asserts.AssertionError)} errorHandler + */ +goog.asserts.setErrorHandler = function(errorHandler) { + if (goog.asserts.ENABLE_ASSERTS) { + goog.asserts.errorHandler_ = errorHandler; + } +}; + + +/** + * Checks if the condition evaluates to true if goog.asserts.ENABLE_ASSERTS is + * true. + * @template T + * @param {T} condition The condition to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {T} The value of the condition. + * @throws {goog.asserts.AssertionError} When the condition evaluates to false. + */ +goog.asserts.assert = function(condition, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !condition) { + goog.asserts.doAssertFailure_( + '', null, opt_message, Array.prototype.slice.call(arguments, 2)); + } + return condition; +}; + + +/** + * Fails if goog.asserts.ENABLE_ASSERTS is true. This function is useful in case + * when we want to add a check in the unreachable area like switch-case + * statement: + * + * 
+ *  switch(type) {
+ *    case FOO: doSomething(); break;
+ *    case BAR: doSomethingElse(); break;
+ *    default: goog.asserts.fail('Unrecognized type: ' + type);
+ *      // We have only 2 types - "default:" section is unreachable code.
+ *  }
+ *
+ * + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @throws {goog.asserts.AssertionError} Failure. + */ +goog.asserts.fail = function(opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS) { + goog.asserts.errorHandler_( + new goog.asserts.AssertionError( + 'Failure' + (opt_message ? ': ' + opt_message : ''), + Array.prototype.slice.call(arguments, 1))); + } +}; + + +/** + * Checks if the value is a number if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {number} The value, guaranteed to be a number when asserts enabled. + * @throws {goog.asserts.AssertionError} When the value is not a number. + */ +goog.asserts.assertNumber = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isNumber(value)) { + goog.asserts.doAssertFailure_( + 'Expected number but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {number} */ (value); +}; + + +/** + * Checks if the value is a string if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {string} The value, guaranteed to be a string when asserts enabled. + * @throws {goog.asserts.AssertionError} When the value is not a string. + */ +goog.asserts.assertString = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isString(value)) { + goog.asserts.doAssertFailure_( + 'Expected string but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {string} */ (value); +}; + + +/** + * Checks if the value is a function if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {!Function} The value, guaranteed to be a function when asserts + * enabled. + * @throws {goog.asserts.AssertionError} When the value is not a function. + */ +goog.asserts.assertFunction = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isFunction(value)) { + goog.asserts.doAssertFailure_( + 'Expected function but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {!Function} */ (value); +}; + + +/** + * Checks if the value is an Object if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {!Object} The value, guaranteed to be a non-null object. + * @throws {goog.asserts.AssertionError} When the value is not an object. + */ +goog.asserts.assertObject = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isObject(value)) { + goog.asserts.doAssertFailure_( + 'Expected object but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {!Object} */ (value); +}; + + +/** + * Checks if the value is an Array if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {!Array} The value, guaranteed to be a non-null array. + * @throws {goog.asserts.AssertionError} When the value is not an array. + */ +goog.asserts.assertArray = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isArray(value)) { + goog.asserts.doAssertFailure_( + 'Expected array but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {!Array} */ (value); +}; + + +/** + * Checks if the value is a boolean if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {boolean} The value, guaranteed to be a boolean when asserts are + * enabled. + * @throws {goog.asserts.AssertionError} When the value is not a boolean. + */ +goog.asserts.assertBoolean = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !goog.isBoolean(value)) { + goog.asserts.doAssertFailure_( + 'Expected boolean but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {boolean} */ (value); +}; + + +/** + * Checks if the value is a DOM Element if goog.asserts.ENABLE_ASSERTS is true. + * @param {*} value The value to check. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @return {!Element} The value, likely to be a DOM Element when asserts are + * enabled. + * @throws {goog.asserts.AssertionError} When the value is not an Element. + */ +goog.asserts.assertElement = function(value, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && + (!goog.isObject(value) || value.nodeType != goog.dom.NodeType.ELEMENT)) { + goog.asserts.doAssertFailure_( + 'Expected Element but got %s: %s.', [goog.typeOf(value), value], + opt_message, Array.prototype.slice.call(arguments, 2)); + } + return /** @type {!Element} */ (value); +}; + + +/** + * Checks if the value is an instance of the user-defined type if + * goog.asserts.ENABLE_ASSERTS is true. + * + * The compiler may tighten the type returned by this function. + * + * @param {?} value The value to check. + * @param {function(new: T, ...)} type A user-defined constructor. + * @param {string=} opt_message Error message in case of failure. + * @param {...*} var_args The items to substitute into the failure message. + * @throws {goog.asserts.AssertionError} When the value is not an instance of + * type. + * @return {T} + * @template T + */ +goog.asserts.assertInstanceof = function(value, type, opt_message, var_args) { + if (goog.asserts.ENABLE_ASSERTS && !(value instanceof type)) { + goog.asserts.doAssertFailure_( + 'Expected instanceof %s but got %s.', + [goog.asserts.getType_(type), goog.asserts.getType_(value)], + opt_message, Array.prototype.slice.call(arguments, 3)); + } + return value; +}; + + +/** + * Checks that no enumerable keys are present in Object.prototype. Such keys + * would break most code that use {@code for (var ... in ...)} loops. + */ +goog.asserts.assertObjectPrototypeIsIntact = function() { + for (var key in Object.prototype) { + goog.asserts.fail(key + ' should not be enumerable in Object.prototype.'); + } +}; + + +/** + * Returns the type of a value. If a constructor is passed, and a suitable + * string cannot be found, 'unknown type name' will be returned. + * @param {*} value A constructor, object, or primitive. + * @return {string} The best display name for the value, or 'unknown type name'. + * @private + */ +goog.asserts.getType_ = function(value) { + if (value instanceof Function) { + return value.displayName || value.name || 'unknown type name'; + } else if (value instanceof Object) { + return value.constructor.displayName || value.constructor.name || + Object.prototype.toString.call(value); + } else { + return value === null ? 'null' : typeof value; + } +}; diff --git a/assets/viz/2/goog/base.js b/assets/viz/2/goog/base.js new file mode 100644 index 0000000..97a9947 --- /dev/null +++ b/assets/viz/2/goog/base.js @@ -0,0 +1,2727 @@ +// Copyright 2006 The Closure Library Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS-IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +/** + * @fileoverview Bootstrap for the Google JS Library (Closure). + * + * In uncompiled mode base.js will write out Closure's deps file, unless the + * global CLOSURE_NO_DEPS is set to true. This allows projects to + * include their own deps file(s) from different locations. + * + * @author arv@google.com (Erik Arvidsson) + * + * @provideGoog + */ + + +/** + * @define {boolean} Overridden to true by the compiler when + * --process_closure_primitives is specified. + */ +var COMPILED = false; + + +/** + * Base namespace for the Closure library. Checks to see goog is already + * defined in the current scope before assigning to prevent clobbering if + * base.js is loaded more than once. + * + * @const + */ +var goog = goog || {}; + + +/** + * Reference to the global context. In most cases this will be 'window'. + */ +goog.global = this; + + +/** + * A hook for overriding the define values in uncompiled mode. + * + * In uncompiled mode, {@code CLOSURE_UNCOMPILED_DEFINES} may be defined before + * loading base.js. If a key is defined in {@code CLOSURE_UNCOMPILED_DEFINES}, + * {@code goog.define} will use the value instead of the default value. This + * allows flags to be overwritten without compilation (this is normally + * accomplished with the compiler's "define" flag). + * + * Example: + * 
+ *   var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};
+ *
+ * + * @type {Object|undefined} + */ +goog.global.CLOSURE_UNCOMPILED_DEFINES; + + +/** + * A hook for overriding the define values in uncompiled or compiled mode, + * like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code. In + * uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence. + * + * Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or + * string literals or the compiler will emit an error. + * + * While any @define value may be set, only those set with goog.define will be + * effective for uncompiled code. + * + * Example: + * 
+ *   var CLOSURE_DEFINES = {'goog.DEBUG': false} ;
+ *
+ * + * @type {Object|undefined} + */ +goog.global.CLOSURE_DEFINES; + + +/** + * Returns true if the specified value is not undefined. + * WARNING: Do not use this to test if an object has a property. Use the in + * operator instead. + * + * @param {?} val Variable to test. + * @return {boolean} Whether variable is defined. + */ +goog.isDef = function(val) { + // void 0 always evaluates to undefined and hence we do not need to depend on + // the definition of the global variable named 'undefined'. + return val !== void 0; +}; + + +/** + * Builds an object structure for the provided namespace path, ensuring that + * names that already exist are not overwritten. For example: + * "a.b.c" -> a = {};a.b={};a.b.c={}; + * Used by goog.provide and goog.exportSymbol. + * @param {string} name name of the object that this file defines. + * @param {*=} opt_object the object to expose at the end of the path. + * @param {Object=} opt_objectToExportTo The object to add the path to; default + * is |goog.global|. + * @private + */ +goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) { + var parts = name.split('.'); + var cur = opt_objectToExportTo || goog.global; + + // Internet Explorer exhibits strange behavior when throwing errors from + // methods externed in this manner. See the testExportSymbolExceptions in + // base_test.html for an example. + if (!(parts[0] in cur) && cur.execScript) { + cur.execScript('var ' + parts[0]); + } + + // Certain browsers cannot parse code in the form for((a in b); c;); + // This pattern is produced by the JSCompiler when it collapses the + // statement above into the conditional loop below. To prevent this from + // happening, use a for-loop and reserve the init logic as below. + + // Parentheses added to eliminate strict JS warning in Firefox. + for (var part; parts.length && (part = parts.shift());) { + if (!parts.length && goog.isDef(opt_object)) { + // last part and we have an object; use it + cur[part] = opt_object; + } else if (cur[part]) { + cur = cur[part]; + } else { + cur = cur[part] = {}; + } + } +}; + + +/** + * Defines a named value. In uncompiled mode, the value is retrieved from + * CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and + * has the property specified, and otherwise used the defined defaultValue. + * When compiled the default can be overridden using the compiler + * options or the value set in the CLOSURE_DEFINES object. + * + * @param {string} name The distinguished name to provide. + * @param {string|number|boolean} defaultValue + */ +goog.define = function(name, defaultValue) { + var value = defaultValue; + if (!COMPILED) { + if (goog.global.CLOSURE_UNCOMPILED_DEFINES && + Object.prototype.hasOwnProperty.call( + goog.global.CLOSURE_UNCOMPILED_DEFINES, name)) { + value = goog.global.CLOSURE_UNCOMPILED_DEFINES[name]; + } else if ( + goog.global.CLOSURE_DEFINES && + Object.prototype.hasOwnProperty.call( + goog.global.CLOSURE_DEFINES, name)) { + value = goog.global.CLOSURE_DEFINES[name]; + } + } + goog.exportPath_(name, value); +}; + + +/** + * @define {boolean} DEBUG is provided as a convenience so that debugging code + * that should not be included in a production js_binary can be easily stripped + * by specifying --define goog.DEBUG=false to the JSCompiler. For example, most + * toString() methods should be declared inside an "if (goog.DEBUG)" conditional + * because they are generally used for debugging purposes and it is difficult + * for the JSCompiler to statically determine whether they are used. + */ +goog.define('goog.DEBUG', true); + + +/** + * @define {string} LOCALE defines the locale being used for compilation. It is + * used to select locale specific data to be compiled in js binary. BUILD rule + * can specify this value by "--define goog.LOCALE=" as JSCompiler + * option. + * + * Take into account that the locale code format is important. You should use + * the canonical Unicode format with hyphen as a delimiter. Language must be + * lowercase, Language Script - Capitalized, Region - UPPERCASE. + * There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN. + * + * See more info about locale codes here: + * http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers + * + * For language codes you should use values defined by ISO 693-1. See it here + * http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from + * this rule: the Hebrew language. For legacy reasons the old code (iw) should + * be used instead of the new code (he), see http://wiki/Main/IIISynonyms. + */ +goog.define('goog.LOCALE', 'en'); // default to en + + +/** + * @define {boolean} Whether this code is running on trusted sites. + * + * On untrusted sites, several native functions can be defined or overridden by + * external libraries like Prototype, Datejs, and JQuery and setting this flag + * to false forces closure to use its own implementations when possible. + * + * If your JavaScript can be loaded by a third party site and you are wary about + * relying on non-standard implementations, specify + * "--define goog.TRUSTED_SITE=false" to the JSCompiler. + */ +goog.define('goog.TRUSTED_SITE', true); + + +/** + * @define {boolean} Whether a project is expected to be running in strict mode. + * + * This define can be used to trigger alternate implementations compatible with + * running in EcmaScript Strict mode or warn about unavailable functionality. + * @see https://goo.gl/PudQ4y + * + */ +goog.define('goog.STRICT_MODE_COMPATIBLE', false); + + +/** + * @define {boolean} Whether code that calls {@link goog.setTestOnly} should + * be disallowed in the compilation unit. + */ +goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG); + + +/** + * @define {boolean} Whether to use a Chrome app CSP-compliant method for + * loading scripts via goog.require. @see appendScriptSrcNode_. + */ +goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false); + + +/** + * Defines a namespace in Closure. + * + * A namespace may only be defined once in a codebase. It may be defined using + * goog.provide() or goog.module(). + * + * The presence of one or more goog.provide() calls in a file indicates + * that the file defines the given objects/namespaces. + * Provided symbols must not be null or undefined. + * + * In addition, goog.provide() creates the object stubs for a namespace + * (for example, goog.provide("goog.foo.bar") will create the object + * goog.foo.bar if it does not already exist). + * + * Build tools also scan for provide/require/module statements + * to discern dependencies, build dependency files (see deps.js), etc. + * + * @see goog.require + * @see goog.module + * @param {string} name Namespace provided by this file in the form + * "goog.package.part". + */ +goog.provide = function(name) { + if (goog.isInModuleLoader_()) { + throw Error('goog.provide can not be used within a goog.module.'); + } + if (!COMPILED) { + // Ensure that the same namespace isn't provided twice. + // A goog.module/goog.provide maps a goog.require to a specific file + if (goog.isProvided_(name)) { + throw Error('Namespace "' + name + '" already declared.'); + } + } + + goog.constructNamespace_(name); +}; + + +/** + * @param {string} name Namespace provided by this file in the form + * "goog.package.part". + * @param {Object=} opt_obj The object to embed in the namespace. + * @private + */ +goog.constructNamespace_ = function(name, opt_obj) { + if (!COMPILED) { + delete goog.implicitNamespaces_[name]; + + var namespace = name; + while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) { + if (goog.getObjectByName(namespace)) { + break; + } + goog.implicitNamespaces_[namespace] = true; + } + } + + goog.exportPath_(name, opt_obj); +}; + + +/** + * Module identifier validation regexp. + * Note: This is a conservative check, it is very possible to be more lenient, + * the primary exclusion here is "/" and "\" and a leading ".", these + * restrictions are intended to leave the door open for using goog.require + * with relative file paths rather than module identifiers. + * @private + */ +goog.VALID_MODULE_RE_ = /^[a-zA-Z_$][a-zA-Z0-9._$]*$/; + + +/** + * Defines a module in Closure. + * + * Marks that this file must be loaded as a module and claims the namespace. + * + * A namespace may only be defined once in a codebase. It may be defined using + * goog.provide() or goog.module(). + * + * goog.module() has three requirements: + * - goog.module may not be used in the same file as goog.provide. + * - goog.module must be the first statement in the file. + * - only one goog.module is allowed per file. + * + * When a goog.module annotated file is loaded, it is enclosed in + * a strict function closure. This means that: + * - any variables declared in a goog.module file are private to the file + * (not global), though the compiler is expected to inline the module. + * - The code must obey all the rules of "strict" JavaScript. + * - the file will be marked as "use strict" + * + * NOTE: unlike goog.provide, goog.module does not declare any symbols by + * itself. If declared symbols are desired, use + * goog.module.declareLegacyNamespace(). + * + * + * See the public goog.module proposal: http://goo.gl/Va1hin + * + * @param {string} name Namespace provided by this file in the form + * "goog.package.part", is expected but not required. + */ +goog.module = function(name) { + if (!goog.isString(name) || !name || + name.search(goog.VALID_MODULE_RE_) == -1) { + throw Error('Invalid module identifier'); + } + if (!goog.isInModuleLoader_()) { + throw Error('Module ' + name + ' has been loaded incorrectly.'); + } + if (goog.moduleLoaderState_.moduleName) { + throw Error('goog.module may only be called once per module.'); + } + + // Store the module name for the loader. + goog.moduleLoaderState_.moduleName = name; + if (!COMPILED) { + // Ensure that the same namespace isn't provided twice. + // A goog.module/goog.provide maps a goog.require to a specific file + if (goog.isProvided_(name)) { + throw Error('Namespace "' + name + '" already declared.'); + } + delete goog.implicitNamespaces_[name]; + } +}; + + +/** + * @param {string} name The module identifier. + * @return {?} The module exports for an already loaded module or null. + * + * Note: This is not an alternative to goog.require, it does not + * indicate a hard dependency, instead it is used to indicate + * an optional dependency or to access the exports of a module + * that has already been loaded. + * @suppress {missingProvide} + */ +goog.module.get = function(name) { + return goog.module.getInternal_(name); +}; + + +/** + * @param {string} name The module identifier. + * @return {?} The module exports for an already loaded module or null. + * @private + */ +goog.module.getInternal_ = function(name) { + if (!COMPILED) { + if (goog.isProvided_(name)) { + // goog.require only return a value with-in goog.module files. + return name in goog.loadedModules_ ? goog.loadedModules_[name] : + goog.getObjectByName(name); + } else { + return null; + } + } +}; + + +/** + * @private {?{moduleName: (string|undefined), declareLegacyNamespace:boolean}} + */ +goog.moduleLoaderState_ = null; + + +/** + * @private + * @return {boolean} Whether a goog.module is currently being initialized. + */ +goog.isInModuleLoader_ = function() { + return goog.moduleLoaderState_ != null; +}; + + +/** + * Provide the module's exports as a globally accessible object under the + * module's declared name. This is intended to ease migration to goog.module + * for files that have existing usages. + * @suppress {missingProvide} + */ +goog.module.declareLegacyNamespace = function() { + if (!COMPILED && !goog.isInModuleLoader_()) { + throw new Error( + 'goog.module.declareLegacyNamespace must be called from ' + + 'within a goog.module'); + } + if (!COMPILED && !goog.moduleLoaderState_.moduleName) { + throw Error( + 'goog.module must be called prior to ' + + 'goog.module.declareLegacyNamespace.'); + } + goog.moduleLoaderState_.declareLegacyNamespace = true; +}; + + +/** + * Marks that the current file should only be used for testing, and never for + * live code in production. + * + * In the case of unit tests, the message may optionally be an exact namespace + * for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra + * provide (if not explicitly defined in the code). + * + * @param {string=} opt_message Optional message to add to the error that's + * raised when used in production code. + */ +goog.setTestOnly = function(opt_message) { + if (goog.DISALLOW_TEST_ONLY_CODE) { + opt_message = opt_message || ''; + throw Error( + 'Importing test-only code into non-debug environment' + + (opt_message ? ': ' + opt_message : '.')); + } +}; + + +/** + * Forward declares a symbol. This is an indication to the compiler that the + * symbol may be used in the source yet is not required and may not be provided + * in compilation. + * + * The most common usage of forward declaration is code that takes a type as a + * function parameter but does not need to require it. By forward declaring + * instead of requiring, no hard dependency is made, and (if not required + * elsewhere) the namespace may never be required and thus, not be pulled + * into the JavaScript binary. If it is required elsewhere, it will be type + * checked as normal. + * + * + * @param {string} name The namespace to forward declare in the form of + * "goog.package.part". + */ +goog.forwardDeclare = function(name) {}; + + +/** + * Forward declare type information. Used to assign types to goog.global + * referenced object that would otherwise result in unknown type references + * and thus block property disambiguation. + */ +goog.forwardDeclare('Document'); +goog.forwardDeclare('HTMLScriptElement'); +goog.forwardDeclare('XMLHttpRequest'); + + +if (!COMPILED) { + /** + * Check if the given name has been goog.provided. This will return false for + * names that are available only as implicit namespaces. + * @param {string} name name of the object to look for. + * @return {boolean} Whether the name has been provided. + * @private + */ + goog.isProvided_ = function(name) { + return (name in goog.loadedModules_) || + (!goog.implicitNamespaces_[name] && + goog.isDefAndNotNull(goog.getObjectByName(name))); + }; + + /** + * Namespaces implicitly defined by goog.provide. For example, + * goog.provide('goog.events.Event') implicitly declares that 'goog' and + * 'goog.events' must be namespaces. + * + * @type {!Object} + * @private + */ + goog.implicitNamespaces_ = {'goog.module': true}; + + // NOTE: We add goog.module as an implicit namespace as goog.module is defined + // here and because the existing module package has not been moved yet out of + // the goog.module namespace. This satisifies both the debug loader and + // ahead-of-time dependency management. +} + + +/** + * Returns an object based on its fully qualified external name. The object + * is not found if null or undefined. If you are using a compilation pass that + * renames property names beware that using this function will not find renamed + * properties. + * + * @param {string} name The fully qualified name. + * @param {Object=} opt_obj The object within which to look; default is + * |goog.global|. + * @return {?} The value (object or primitive) or, if not found, null. + */ +goog.getObjectByName = function(name, opt_obj) { + var parts = name.split('.'); + var cur = opt_obj || goog.global; + for (var part; part = parts.shift();) { + if (goog.isDefAndNotNull(cur[part])) { + cur = cur[part]; + } else { + return null; + } + } + return cur; +}; + + +/** + * Globalizes a whole namespace, such as goog or goog.lang. + * + * @param {!Object} obj The namespace to globalize. + * @param {Object=} opt_global The object to add the properties to. + * @deprecated Properties may be explicitly exported to the global scope, but + * this should no longer be done in bulk. + */ +goog.globalize = function(obj, opt_global) { + var global = opt_global || goog.global; + for (var x in obj) { + global[x] = obj[x]; + } +}; + + +/** + * Adds a dependency from a file to the files it requires. + * @param {string} relPath The path to the js file. + * @param {!Array} provides An array of strings with + * the names of the objects this file provides. + * @param {!Array} requires An array of strings with + * the names of the objects this file requires. + * @param {boolean|!Object=} opt_loadFlags Parameters indicating + * how the file must be loaded. The boolean 'true' is equivalent + * to {'module': 'goog'} for backwards-compatibility. Valid properties + * and values include {'module': 'goog'} and {'lang': 'es6'}. + */ +goog.addDependency = function(relPath, provides, requires, opt_loadFlags) { + if (goog.DEPENDENCIES_ENABLED) { + var provide, require; + var path = relPath.replace(/\\/g, '/'); + var deps = goog.dependencies_; + if (!opt_loadFlags || typeof opt_loadFlags === 'boolean') { + opt_loadFlags = opt_loadFlags ? {'module': 'goog'} : {}; + } + for (var i = 0; provide = provides[i]; i++) { + deps.nameToPath[provide] = path; + deps.loadFlags[path] = opt_loadFlags; + } + for (var j = 0; require = requires[j]; j++) { + if (!(path in deps.requires)) { + deps.requires[path] = {}; + } + deps.requires[path][require] = true; + } + } +}; + + + + +// NOTE(nnaze): The debug DOM loader was included in base.js as an original way +// to do "debug-mode" development. The dependency system can sometimes be +// confusing, as can the debug DOM loader's asynchronous nature. +// +// With the DOM loader, a call to goog.require() is not blocking -- the script +// will not load until some point after the current script. If a namespace is +// needed at runtime, it needs to be defined in a previous script, or loaded via +// require() with its registered dependencies. +// +// User-defined namespaces may need their own deps file. For a reference on +// creating a deps file, see: +// Externally: https://developers.google.com/closure/library/docs/depswriter +// +// Because of legacy clients, the DOM loader can't be easily removed from +// base.js. Work is being done to make it disableable or replaceable for +// different environments (DOM-less JavaScript interpreters like Rhino or V8, +// for example). See bootstrap/ for more information. + + +/** + * @define {boolean} Whether to enable the debug loader. + * + * If enabled, a call to goog.require() will attempt to load the namespace by + * appending a script tag to the DOM (if the namespace has been registered). + * + * If disabled, goog.require() will simply assert that the namespace has been + * provided (and depend on the fact that some outside tool correctly ordered + * the script). + */ +goog.define('goog.ENABLE_DEBUG_LOADER', true); + + +/** + * @param {string} msg + * @private + */ +goog.logToConsole_ = function(msg) { + if (goog.global.console) { + goog.global.console['error'](msg); + } +}; + + +/** + * Implements a system for the dynamic resolution of dependencies that works in + * parallel with the BUILD system. Note that all calls to goog.require will be + * stripped by the JSCompiler when the --process_closure_primitives option is + * used. + * @see goog.provide + * @param {string} name Namespace to include (as was given in goog.provide()) in + * the form "goog.package.part". + * @return {?} If called within a goog.module file, the associated namespace or + * module otherwise null. + */ +goog.require = function(name) { + // If the object already exists we do not need do do anything. + if (!COMPILED) { + if (goog.ENABLE_DEBUG_LOADER && goog.IS_OLD_IE_) { + goog.maybeProcessDeferredDep_(name); + } + + if (goog.isProvided_(name)) { + if (goog.isInModuleLoader_()) { + return goog.module.getInternal_(name); + } else { + return null; + } + } + + if (goog.ENABLE_DEBUG_LOADER) { + var path = goog.getPathFromDeps_(name); + if (path) { + goog.writeScripts_(path); + return null; + } + } + + var errorMessage = 'goog.require could not find: ' + name; + goog.logToConsole_(errorMessage); + + throw Error(errorMessage); + } +}; + + +/** + * Path for included scripts. + * @type {string} + */ +goog.basePath = ''; + + +/** + * A hook for overriding the base path. + * @type {string|undefined} + */ +goog.global.CLOSURE_BASE_PATH; + + +/** + * Whether to write out Closure's deps file. By default, the deps are written. + * @type {boolean|undefined} + */ +goog.global.CLOSURE_NO_DEPS; + + +/** + * A function to import a single script. This is meant to be overridden when + * Closure is being run in non-HTML contexts, such as web workers. It's defined + * in the global scope so that it can be set before base.js is loaded, which + * allows deps.js to be imported properly. + * + * The function is passed the script source, which is a relative URI. It should + * return true if the script was imported, false otherwise. + * @type {(function(string): boolean)|undefined} + */ +goog.global.CLOSURE_IMPORT_SCRIPT; + + +/** + * Null function used for default values of callbacks, etc. + * @return {void} Nothing. + */ +goog.nullFunction = function() {}; + + +/** + * When defining a class Foo with an abstract method bar(), you can do: + * Foo.prototype.bar = goog.abstractMethod + * + * Now if a subclass of Foo fails to override bar(), an error will be thrown + * when bar() is invoked. + * + * Note: This does not take the name of the function to override as an argument + * because that would make it more difficult to obfuscate our JavaScript code. + * + * @type {!Function} + * @throws {Error} when invoked to indicate the method should be overridden. + */ +goog.abstractMethod = function() { + throw Error('unimplemented abstract method'); +}; + + +/** + * Adds a {@code getInstance} static method that always returns the same + * instance object. + * @param {!Function} ctor The constructor for the class to add the static + * method to. + */ +goog.addSingletonGetter = function(ctor) { + ctor.getInstance = function() { + if (ctor.instance_) { + return ctor.instance_; + } + if (goog.DEBUG) { + // NOTE: JSCompiler can't optimize away Array#push. + goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor; + } + return ctor.instance_ = new ctor; + }; +}; + + +/** + * All singleton classes that have been instantiated, for testing. Don't read + * it directly, use the {@code goog.testing.singleton} module. The compiler + * removes this variable if unused. + * @type {!Array} + * @private + */ +goog.instantiatedSingletons_ = []; + + +/** + * @define {boolean} Whether to load goog.modules using {@code eval} when using + * the debug loader. This provides a better debugging experience as the + * source is unmodified and can be edited using Chrome Workspaces or similar. + * However in some environments the use of {@code eval} is banned + * so we provide an alternative. + */ +goog.define('goog.LOAD_MODULE_USING_EVAL', true); + + +/** + * @define {boolean} Whether the exports of goog.modules should be sealed when + * possible. + */ +goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG); + + +/** + * The registry of initialized modules: + * the module identifier to module exports map. + * @private @const {!Object} + */ +goog.loadedModules_ = {}; + + +/** + * True if goog.dependencies_ is available. + * @const {boolean} + */ +goog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER; + + +/** + * @define {string} How to decide whether to transpile. Valid values + * are 'always', 'never', and 'detect'. The default ('detect') is to + * use feature detection to determine which language levels need + * transpilation. + */ +// NOTE(user): we could expand this to accept a language level to bypass +// detection: e.g. goog.TRANSPILE == 'es5' would transpile ES6 files but +// would leave ES3 and ES5 files alone. +goog.define('goog.TRANSPILE', 'detect'); + + +/** + * @define {string} Path to the transpiler. Executing the script at this + * path (relative to base.js) should define a function $jscomp.transpile. + */ +goog.define('goog.TRANSPILER', 'transpile.js'); + + +if (goog.DEPENDENCIES_ENABLED) { + /** + * This object is used to keep track of dependencies and other data that is + * used for loading scripts. + * @private + * @type {{ + * loadFlags: !Object>, + * nameToPath: !Object, + * requires: !Object>, + * visited: !Object, + * written: !Object, + * deferred: !Object + * }} + */ + goog.dependencies_ = { + loadFlags: {}, // 1 to 1 + + nameToPath: {}, // 1 to 1 + + requires: {}, // 1 to many + + // Used when resolving dependencies to prevent us from visiting file twice. + visited: {}, + + written: {}, // Used to keep track of script files we have written. + + deferred: {} // Used to track deferred module evaluations in old IEs + }; + + + /** + * Tries to detect whether is in the context of an HTML document. + * @return {boolean} True if it looks like HTML document. + * @private + */ + goog.inHtmlDocument_ = function() { + /** @type {Document} */ + var doc = goog.global.document; + return doc != null && 'write' in doc; // XULDocument misses write. + }; + + + /** + * Tries to detect the base path of base.js script that bootstraps Closure. + * @private + */ + goog.findBasePath_ = function() { + if (goog.isDef(goog.global.CLOSURE_BASE_PATH)) { + goog.basePath = goog.global.CLOSURE_BASE_PATH; + return; + } else if (!goog.inHtmlDocument_()) { + return; + } + /** @type {Document} */ + var doc = goog.global.document; + var scripts = doc.getElementsByTagName('SCRIPT'); + // Search backwards since the current script is in almost all cases the one + // that has base.js. + for (var i = scripts.length - 1; i >= 0; --i) { + var script = /** @type {!HTMLScriptElement} */ (scripts[i]); + var src = script.src; + var qmark = src.lastIndexOf('?'); + var l = qmark == -1 ? src.length : qmark; + if (src.substr(l - 7, 7) == 'base.js') { + goog.basePath = src.substr(0, l - 7); + return; + } + } + }; + + + /** + * Imports a script if, and only if, that script hasn't already been imported. + * (Must be called at execution time) + * @param {string} src Script source. + * @param {string=} opt_sourceText The optionally source text to evaluate + * @private + */ + goog.importScript_ = function(src, opt_sourceText) { + var importScript = + goog.global.CLOSURE_IMPORT_SCRIPT || goog.writeScriptTag_; + if (importScript(src, opt_sourceText)) { + goog.dependencies_.written[src] = true; + } + }; + + + /** + * Whether the browser is IE9 or earlier, which needs special handling + * for deferred modules. + * @const @private {boolean} + */ + goog.IS_OLD_IE_ = + !!(!goog.global.atob && goog.global.document && goog.global.document.all); + + + /** + * Given a URL initiate retrieval and execution of a script that needs + * pre-processing. + * @param {string} src Script source URL. + * @param {boolean} isModule Whether this is a goog.module. + * @param {boolean} needsTranspile Whether this source needs transpilation. + * @private + */ + goog.importProcessedScript_ = function(src, isModule, needsTranspile) { + // In an attempt to keep browsers from timing out loading scripts using + // synchronous XHRs, put each load in its own script block. + var bootstrap = 'goog.retrieveAndExec_("' + src + '", ' + isModule + ', ' + + needsTranspile + ');'; + + goog.importScript_('', bootstrap); + }; + + + /** @private {!Array} */ + goog.queuedModules_ = []; + + + /** + * Return an appropriate module text. Suitable to insert into + * a script tag (that is unescaped). + * @param {string} srcUrl + * @param {string} scriptText + * @return {string} + * @private + */ + goog.wrapModule_ = function(srcUrl, scriptText) { + if (!goog.LOAD_MODULE_USING_EVAL || !goog.isDef(goog.global.JSON)) { + return '' + + 'goog.loadModule(function(exports) {' + + '"use strict";' + scriptText + + '\n' + // terminate any trailing single line comment. + ';return exports' + + '});' + + '\n//# sourceURL=' + srcUrl + '\n'; + } else { + return '' + + 'goog.loadModule(' + + goog.global.JSON.stringify( + scriptText + '\n//# sourceURL=' + srcUrl + '\n') + + ');'; + } + }; + + // On IE9 and earlier, it is necessary to handle + // deferred module loads. In later browsers, the + // code to be evaluated is simply inserted as a script + // block in the correct order. To eval deferred + // code at the right time, we piggy back on goog.require to call + // goog.maybeProcessDeferredDep_. + // + // The goog.requires are used both to bootstrap + // the loading process (when no deps are available) and + // declare that they should be available. + // + // Here we eval the sources, if all the deps are available + // either already eval'd or goog.require'd. This will + // be the case when all the dependencies have already + // been loaded, and the dependent module is loaded. + // + // But this alone isn't sufficient because it is also + // necessary to handle the case where there is no root + // that is not deferred. For that there we register for an event + // and trigger goog.loadQueuedModules_ handle any remaining deferred + // evaluations. + + /** + * Handle any remaining deferred goog.module evals. + * @private + */ + goog.loadQueuedModules_ = function() { + var count = goog.queuedModules_.length; + if (count > 0) { + var queue = goog.queuedModules_; + goog.queuedModules_ = []; + for (var i = 0; i < count; i++) { + var path = queue[i]; + goog.maybeProcessDeferredPath_(path); + } + } + }; + + + /** + * Eval the named module if its dependencies are + * available. + * @param {string} name The module to load. + * @private + */ + goog.maybeProcessDeferredDep_ = function(name) { + if (goog.isDeferredModule_(name) && goog.allDepsAreAvailable_(name)) { + var path = goog.getPathFromDeps_(name); + goog.maybeProcessDeferredPath_(goog.basePath + path); + } + }; + + /** + * @param {string} name The module to check. + * @return {boolean} Whether the name represents a + * module whose evaluation has been deferred. + * @private + */ + goog.isDeferredModule_ = function(name) { + var path = goog.getPathFromDeps_(name); + var loadFlags = path && goog.dependencies_.loadFlags[path] || {}; + if (path && (loadFlags['module'] == 'goog' || + goog.needsTranspile_(loadFlags['lang']))) { + var abspath = goog.basePath + path; + return (abspath) in goog.dependencies_.deferred; + } + return false; + }; + + /** + * @param {string} name The module to check. + * @return {boolean} Whether the name represents a + * module whose declared dependencies have all been loaded + * (eval'd or a deferred module load) + * @private + */ + goog.allDepsAreAvailable_ = function(name) { + var path = goog.getPathFromDeps_(name); + if (path && (path in goog.dependencies_.requires)) { + for (var requireName in goog.dependencies_.requires[path]) { + if (!goog.isProvided_(requireName) && + !goog.isDeferredModule_(requireName)) { + return false; + } + } + } + return true; + }; + + + /** + * @param {string} abspath + * @private + */ + goog.maybeProcessDeferredPath_ = function(abspath) { + if (abspath in goog.dependencies_.deferred) { + var src = goog.dependencies_.deferred[abspath]; + delete goog.dependencies_.deferred[abspath]; + goog.globalEval(src); + } + }; + + + /** + * Load a goog.module from the provided URL. This is not a general purpose + * code loader and does not support late loading code, that is it should only + * be used during page load. This method exists to support unit tests and + * "debug" loaders that would otherwise have inserted script tags. Under the + * hood this needs to use a synchronous XHR and is not recommeneded for + * production code. + * + * The module's goog.requires must have already been satisified; an exception + * will be thrown if this is not the case. This assumption is that no + * "deps.js" file exists, so there is no way to discover and locate the + * module-to-be-loaded's dependencies and no attempt is made to do so. + * + * There should only be one attempt to load a module. If + * "goog.loadModuleFromUrl" is called for an already loaded module, an + * exception will be throw. + * + * @param {string} url The URL from which to attempt to load the goog.module. + */ + goog.loadModuleFromUrl = function(url) { + // Because this executes synchronously, we don't need to do any additional + // bookkeeping. When "goog.loadModule" the namespace will be marked as + // having been provided which is sufficient. + goog.retrieveAndExec_(url, true, false); + }; + + + /** + * @param {function(?):?|string} moduleDef The module definition. + */ + goog.loadModule = function(moduleDef) { + // NOTE: we allow function definitions to be either in the from + // of a string to eval (which keeps the original source intact) or + // in a eval forbidden environment (CSP) we allow a function definition + // which in its body must call {@code goog.module}, and return the exports + // of the module. + var previousState = goog.moduleLoaderState_; + try { + goog.moduleLoaderState_ = { + moduleName: undefined, + declareLegacyNamespace: false + }; + var exports; + if (goog.isFunction(moduleDef)) { + exports = moduleDef.call(goog.global, {}); + } else if (goog.isString(moduleDef)) { + exports = goog.loadModuleFromSource_.call(goog.global, moduleDef); + } else { + throw Error('Invalid module definition'); + } + + var moduleName = goog.moduleLoaderState_.moduleName; + if (!goog.isString(moduleName) || !moduleName) { + throw Error('Invalid module name \"' + moduleName + '\"'); + } + + // Don't seal legacy namespaces as they may be uses as a parent of + // another namespace + if (goog.moduleLoaderState_.declareLegacyNamespace) { + goog.constructNamespace_(moduleName, exports); + } else if (goog.SEAL_MODULE_EXPORTS && Object.seal) { + Object.seal(exports); + } + + goog.loadedModules_[moduleName] = exports; + } finally { + goog.moduleLoaderState_ = previousState; + } + }; + + + /** + * @private @const {function(string):?} + * + * The new type inference warns because this function has no formal + * parameters, but its jsdoc says that it takes one argument. + * (The argument is used via arguments[0], but NTI does not detect this.) + * @suppress {newCheckTypes} + */ + goog.loadModuleFromSource_ = function() { + // NOTE: we avoid declaring parameters or local variables here to avoid + // masking globals or leaking values into the module definition. + 'use strict'; + var exports = {}; + eval(arguments[0]); + return exports; + }; + + + /** + * Writes a new script pointing to {@code src} directly into the DOM. + * + * NOTE: This method is not CSP-compliant. @see goog.appendScriptSrcNode_ for + * the fallback mechanism. + * + * @param {string} src The script URL. + * @private + */ + goog.writeScriptSrcNode_ = function(src) { + goog.global.document.write( + '