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Add FLOAT64_BYTES_PER_ELEMENT for easier test mocking.

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This commit is contained in:
John-David Dalton
2014-07-06 08:24:58 -05:00
parent 65aeb97e3e
commit 92e5ae29c9
1 changed files with 48 additions and 43 deletions
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91
lodash.js
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@@ -11,6 +11,9 @@
/** Used as a safe reference for `undefined` in pre ES5 environments */ /** Used as a safe reference for `undefined` in pre ES5 environments */
var undefined; var undefined;
/** Used as the semantic version number */
var VERSION = '3.0.0-pre';
/** Used to compose bitmasks for wrapper metadata */ /** Used to compose bitmasks for wrapper metadata */
var BIND_FLAG = 1, var BIND_FLAG = 1,
BIND_KEY_FLAG = 2, BIND_KEY_FLAG = 2,
@@ -20,14 +23,21 @@
PARTIAL_FLAG = 32, PARTIAL_FLAG = 32,
PARTIAL_RIGHT_FLAG = 64; PARTIAL_RIGHT_FLAG = 64;
/** Used as the semantic version number */
var version = '3.0.0-pre';
/** Used as the property name for wrapper metadata */ /** Used as the property name for wrapper metadata */
var expando = '__lodash@' + version + '__'; var EXPANDO = '__lodash@' + VERSION + '__';
/** Used as the TypeError message for "Functions" methods */ /** Used as the TypeError message for "Functions" methods */
var funcErrorText = 'Expected a function'; var FUNC_ERROR_TEXT = 'Expected a function';
/** Used as a reference for the max length of an array */
var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1;
/**
* Used as the maximum length of an array-like value.
* See the [ES6 spec](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
* for more details.
*/
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
/** Used to generate unique IDs */ /** Used to generate unique IDs */
var idCounter = 0; var idCounter = 0;
@@ -629,16 +639,6 @@
/** Used to resolve the decompiled source of functions */ /** Used to resolve the decompiled source of functions */
var fnToString = Function.prototype.toString; var fnToString = Function.prototype.toString;
/** Used as a reference for the max length of an array */
var maxArrayLength = Math.pow(2, 32) - 1;
/**
* Used as the maximum length of an array-like value.
* See the [ES6 spec](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
* for more details.
*/
var maxSafeInteger = Math.pow(2, 53) - 1;
/** Used to restore the original `_` reference in `_.noConflict` */ /** Used to restore the original `_` reference in `_.noConflict` */
var oldDash = context._; var oldDash = context._;
@@ -693,6 +693,9 @@
nativeParseInt = context.parseInt, nativeParseInt = context.parseInt,
nativeRandom = Math.random; nativeRandom = Math.random;
/** Used as the size, in bytes, of each Float64Array element */
var FLOAT64_BYTES_PER_ELEMENT = Float64Array && Float64Array.BYTES_PER_ELEMENT;
/** Used to lookup a built-in constructor by [[Class]] */ /** Used to lookup a built-in constructor by [[Class]] */
var ctorByClass = {}; var ctorByClass = {};
ctorByClass[float32Class] = context.Float32Array; ctorByClass[float32Class] = context.Float32Array;
@@ -1302,7 +1305,7 @@
if (typeof thisArg == 'undefined') { if (typeof thisArg == 'undefined') {
return func; return func;
} }
var data = func[expando]; var data = func[EXPANDO];
if (typeof data == 'undefined') { if (typeof data == 'undefined') {
if (support.funcNames) { if (support.funcNames) {
data = !func.name; data = !func.name;
@@ -1645,7 +1648,7 @@
*/ */
function baseEach(collection, iterator) { function baseEach(collection, iterator) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
if (!(typeof length == 'number' && length > -1 && length <= maxSafeInteger)) { if (!(typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER)) {
return baseForOwn(collection, iterator); return baseForOwn(collection, iterator);
} }
var index = -1, var index = -1,
@@ -1670,7 +1673,7 @@
*/ */
function baseEachRight(collection, iterator) { function baseEachRight(collection, iterator) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
if (!(typeof length == 'number' && length > -1 && length <= maxSafeInteger)) { if (!(typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER)) {
return baseForOwnRight(collection, iterator); return baseForOwnRight(collection, iterator);
} }
var iterable = toIterable(collection); var iterable = toIterable(collection);
@@ -2108,7 +2111,7 @@
length = collection ? collection.length : 0, length = collection ? collection.length : 0,
result = []; result = [];
if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) { if (typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER) {
result.length = length; result.length = length;
} }
baseEach(collection, function(value) { baseEach(collection, function(value) {
@@ -2214,7 +2217,9 @@
*/ */
function basePartial(func, bitmask, args, thisArg) { function basePartial(func, bitmask, args, thisArg) {
if (func) { if (func) {
var arity = func[expando] ? func[expando][2] : func.length; var data = func[EXPANDO],
arity = data ? data[2] : func.length;
arity -= args.length; arity -= args.length;
} }
var isPartial = bitmask & PARTIAL_FLAG; var isPartial = bitmask & PARTIAL_FLAG;
@@ -2734,7 +2739,7 @@
isPartialRight = bitmask & PARTIAL_RIGHT_FLAG; isPartialRight = bitmask & PARTIAL_RIGHT_FLAG;
if (!isBindKey && !isFunction(func)) { if (!isBindKey && !isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
if (isPartial && !partialArgs.length) { if (isPartial && !partialArgs.length) {
bitmask &= ~PARTIAL_FLAG; bitmask &= ~PARTIAL_FLAG;
@@ -2744,7 +2749,7 @@
bitmask &= ~PARTIAL_RIGHT_FLAG; bitmask &= ~PARTIAL_RIGHT_FLAG;
isPartialRight = partialRightArgs = false; isPartialRight = partialRightArgs = false;
} }
var data = !isBindKey && func[expando]; var data = !isBindKey && func[EXPANDO];
if (data && data !== true) { if (data && data !== true) {
// shallow clone `data` // shallow clone `data`
data = slice(data); data = slice(data);
@@ -2876,8 +2881,8 @@
// PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array` // PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array`
cloneBuffer = !(ArrayBuffer && Uint8Array) ? identity : function(buffer) { cloneBuffer = !(ArrayBuffer && Uint8Array) ? identity : function(buffer) {
var byteLength = buffer.byteLength, var byteLength = buffer.byteLength,
floatLength = Float64Array ? floor(byteLength / 8) : 0, floatLength = Float64Array ? floor(byteLength / FLOAT64_BYTES_PER_ELEMENT) : 0,
offset = floatLength * 8, offset = floatLength * FLOAT64_BYTES_PER_ELEMENT,
result = new ArrayBuffer(byteLength); result = new ArrayBuffer(byteLength);
if (floatLength) { if (floatLength) {
@@ -2902,7 +2907,7 @@
*/ */
var setData = !defineProperty ? identity : function(func, value) { var setData = !defineProperty ? identity : function(func, value) {
descriptor.value = value; descriptor.value = value;
defineProperty(func, expando, descriptor); defineProperty(func, EXPANDO, descriptor);
descriptor.value = null; descriptor.value = null;
return func; return func;
}; };
@@ -2987,7 +2992,7 @@
*/ */
function toIterable(collection) { function toIterable(collection) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
if (!(typeof length == 'number' && length > -1 && length <= maxSafeInteger)) { if (!(typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER)) {
return values(collection); return values(collection);
} else if (support.unindexedChars && isString(collection)) { } else if (support.unindexedChars && isString(collection)) {
return collection.split(''); return collection.split('');
@@ -4355,7 +4360,7 @@
function at(collection) { function at(collection) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) { if (typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER) {
collection = toIterable(collection); collection = toIterable(collection);
} }
return baseAt(collection, baseFlatten(arguments, false, false, 1)); return baseAt(collection, baseFlatten(arguments, false, false, 1));
@@ -4391,7 +4396,7 @@
function contains(collection, target, fromIndex) { function contains(collection, target, fromIndex) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
if (!(typeof length == 'number' && length > -1 && length <= maxSafeInteger)) { if (!(typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER)) {
collection = values(collection); collection = values(collection);
length = collection.length; length = collection.length;
} }
@@ -5273,7 +5278,7 @@
*/ */
function size(collection) { function size(collection) {
var length = collection ? collection.length : 0; var length = collection ? collection.length : 0;
return (typeof length == 'number' && length > -1 && length <= maxSafeInteger) return (typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER)
? length ? length
: keys(collection).length; : keys(collection).length;
} }
@@ -5383,7 +5388,7 @@
multi = iterator && isArray(iterator), multi = iterator && isArray(iterator),
result = []; result = [];
if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) { if (typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER) {
result.length = length; result.length = length;
} }
if (!multi) { if (!multi) {
@@ -5487,7 +5492,7 @@
*/ */
function after(n, func) { function after(n, func) {
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
n = nativeIsFinite(n = +n) ? n : 0; n = nativeIsFinite(n = +n) ? n : 0;
return function() { return function() {
@@ -5515,7 +5520,7 @@
function before(n, func) { function before(n, func) {
var result; var result;
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
return function() { return function() {
if (--n > 0) { if (--n > 0) {
@@ -5693,7 +5698,7 @@
} }
while (length--) { while (length--) {
if (!isFunction(funcs[length])) { if (!isFunction(funcs[length])) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
} }
return function() { return function() {
@@ -5844,7 +5849,7 @@
trailing = true; trailing = true;
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
wait = wait < 0 ? 0 : wait; wait = wait < 0 ? 0 : wait;
if (options === true) { if (options === true) {
@@ -5962,7 +5967,7 @@
*/ */
function defer(func) { function defer(func) {
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
var args = slice(arguments, 1); var args = slice(arguments, 1);
return setTimeout(function() { func.apply(undefined, args); }, 1); return setTimeout(function() { func.apply(undefined, args); }, 1);
@@ -5986,7 +5991,7 @@
*/ */
function delay(func, wait) { function delay(func, wait) {
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
var args = slice(arguments, 2); var args = slice(arguments, 2);
return setTimeout(function() { func.apply(undefined, args); }, wait); return setTimeout(function() { func.apply(undefined, args); }, wait);
@@ -6029,7 +6034,7 @@
*/ */
function memoize(func, resolver) { function memoize(func, resolver) {
if (!isFunction(func) || (resolver && !isFunction(resolver))) { if (!isFunction(func) || (resolver && !isFunction(resolver))) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
var memoized = function() { var memoized = function() {
var key = resolver ? resolver.apply(this, arguments) : arguments[0]; var key = resolver ? resolver.apply(this, arguments) : arguments[0];
@@ -6066,7 +6071,7 @@
*/ */
function negate(predicate) { function negate(predicate) {
if (!isFunction(predicate)) { if (!isFunction(predicate)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
return function() { return function() {
return !predicate.apply(this, arguments); return !predicate.apply(this, arguments);
@@ -6193,7 +6198,7 @@
trailing = true; trailing = true;
if (!isFunction(func)) { if (!isFunction(func)) {
throw new TypeError(funcErrorText); throw new TypeError(FUNC_ERROR_TEXT);
} }
if (options === false) { if (options === false) {
leading = false; leading = false;
@@ -6884,7 +6889,7 @@
return true; return true;
} }
var length = value.length; var length = value.length;
if ((typeof length == 'number' && length > -1 && length <= maxSafeInteger) && if ((typeof length == 'number' && length > -1 && length <= MAX_SAFE_INTEGER) &&
(isArray(value) || isString(value) || isArguments(value) || (isArray(value) || isString(value) || isArguments(value) ||
(typeof value == 'object' && isFunction(value.splice)))) { (typeof value == 'object' && isFunction(value.splice)))) {
return !length; return !length;
@@ -8924,10 +8929,10 @@
iterator = baseCallback(iterator, thisArg, 1); iterator = baseCallback(iterator, thisArg, 1);
var index = -1, var index = -1,
result = Array(nativeMin(n, maxArrayLength)); result = Array(nativeMin(n, MAX_ARRAY_LENGTH));
while (++index < n) { while (++index < n) {
if (index < maxArrayLength) { if (index < MAX_ARRAY_LENGTH) {
result[index] = iterator(index); result[index] = iterator(index);
} else { } else {
iterator(index); iterator(index);
@@ -9188,7 +9193,7 @@
* @memberOf _ * @memberOf _
* @type string * @type string
*/ */
lodash.VERSION = version; lodash.VERSION = VERSION;
// add "Chaining" functions to the wrapper // add "Chaining" functions to the wrapper
lodash.prototype.chain = wrapperChain; lodash.prototype.chain = wrapperChain;