| Index: src/array.js
|
| diff --git a/src/array.js b/src/array.js
|
| deleted file mode 100644
|
| index 462e5281374689929ff2fadb8e241ff6a38ba114..0000000000000000000000000000000000000000
|
| --- a/src/array.js
|
| +++ /dev/null
|
| @@ -1,1659 +0,0 @@
|
| -// Copyright 2012 the V8 project authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -(function(global, utils) {
|
| -
|
| -"use strict";
|
| -
|
| -%CheckIsBootstrapping();
|
| -
|
| -// -------------------------------------------------------------------
|
| -// Imports
|
| -
|
| -var Delete;
|
| -var GlobalArray = global.Array;
|
| -var InternalArray = utils.InternalArray;
|
| -var InternalPackedArray = utils.InternalPackedArray;
|
| -var MathMin;
|
| -var ObjectHasOwnProperty;
|
| -var ObjectIsFrozen;
|
| -var ObjectIsSealed;
|
| -var ObjectToString;
|
| -var unscopablesSymbol = utils.ImportNow("unscopables_symbol");
|
| -
|
| -utils.Import(function(from) {
|
| - Delete = from.Delete;
|
| - MathMin = from.MathMin;
|
| - ObjectHasOwnProperty = from.ObjectHasOwnProperty;
|
| - ObjectIsFrozen = from.ObjectIsFrozen;
|
| - ObjectIsSealed = from.ObjectIsSealed;
|
| - ObjectToString = from.ObjectToString;
|
| -});
|
| -
|
| -// -------------------------------------------------------------------
|
| -
|
| -// Global list of arrays visited during toString, toLocaleString and
|
| -// join invocations.
|
| -var visited_arrays = new InternalArray();
|
| -
|
| -
|
| -// Gets a sorted array of array keys. Useful for operations on sparse
|
| -// arrays. Dupes have not been removed.
|
| -function GetSortedArrayKeys(array, indices) {
|
| - var keys = new InternalArray();
|
| - if (IS_NUMBER(indices)) {
|
| - // It's an interval
|
| - var limit = indices;
|
| - for (var i = 0; i < limit; ++i) {
|
| - var e = array[i];
|
| - if (!IS_UNDEFINED(e) || i in array) {
|
| - keys.push(i);
|
| - }
|
| - }
|
| - } else {
|
| - var length = indices.length;
|
| - for (var k = 0; k < length; ++k) {
|
| - var key = indices[k];
|
| - if (!IS_UNDEFINED(key)) {
|
| - var e = array[key];
|
| - if (!IS_UNDEFINED(e) || key in array) {
|
| - keys.push(key);
|
| - }
|
| - }
|
| - }
|
| - keys.sort(function(a, b) { return a - b; });
|
| - }
|
| - return keys;
|
| -}
|
| -
|
| -
|
| -function SparseJoinWithSeparatorJS(array, len, convert, separator) {
|
| - var keys = GetSortedArrayKeys(array, %GetArrayKeys(array, len));
|
| - var totalLength = 0;
|
| - var elements = new InternalArray(keys.length * 2);
|
| - var previousKey = -1;
|
| - for (var i = 0; i < keys.length; i++) {
|
| - var key = keys[i];
|
| - if (key != previousKey) { // keys may contain duplicates.
|
| - var e = array[key];
|
| - if (!IS_STRING(e)) e = convert(e);
|
| - elements[i * 2] = key;
|
| - elements[i * 2 + 1] = e;
|
| - previousKey = key;
|
| - }
|
| - }
|
| - return %SparseJoinWithSeparator(elements, len, separator);
|
| -}
|
| -
|
| -
|
| -// Optimized for sparse arrays if separator is ''.
|
| -function SparseJoin(array, len, convert) {
|
| - var keys = GetSortedArrayKeys(array, %GetArrayKeys(array, len));
|
| - var last_key = -1;
|
| - var keys_length = keys.length;
|
| -
|
| - var elements = new InternalArray(keys_length);
|
| - var elements_length = 0;
|
| -
|
| - for (var i = 0; i < keys_length; i++) {
|
| - var key = keys[i];
|
| - if (key != last_key) {
|
| - var e = array[key];
|
| - if (!IS_STRING(e)) e = convert(e);
|
| - elements[elements_length++] = e;
|
| - last_key = key;
|
| - }
|
| - }
|
| - return %StringBuilderConcat(elements, elements_length, '');
|
| -}
|
| -
|
| -
|
| -function UseSparseVariant(array, length, is_array, touched) {
|
| - // Only use the sparse variant on arrays that are likely to be sparse and the
|
| - // number of elements touched in the operation is relatively small compared to
|
| - // the overall size of the array.
|
| - if (!is_array || length < 1000 || %IsObserved(array) ||
|
| - %HasComplexElements(array)) {
|
| - return false;
|
| - }
|
| - if (!%_IsSmi(length)) {
|
| - return true;
|
| - }
|
| - var elements_threshold = length >> 2; // No more than 75% holes
|
| - var estimated_elements = %EstimateNumberOfElements(array);
|
| - return (estimated_elements < elements_threshold) &&
|
| - (touched > estimated_elements * 4);
|
| -}
|
| -
|
| -
|
| -function Join(array, length, separator, convert) {
|
| - if (length == 0) return '';
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| -
|
| - if (is_array) {
|
| - // If the array is cyclic, return the empty string for already
|
| - // visited arrays.
|
| - if (!%PushIfAbsent(visited_arrays, array)) return '';
|
| - }
|
| -
|
| - // Attempt to convert the elements.
|
| - try {
|
| - if (UseSparseVariant(array, length, is_array, length)) {
|
| - %NormalizeElements(array);
|
| - if (separator.length == 0) {
|
| - return SparseJoin(array, length, convert);
|
| - } else {
|
| - return SparseJoinWithSeparatorJS(array, length, convert, separator);
|
| - }
|
| - }
|
| -
|
| - // Fast case for one-element arrays.
|
| - if (length == 1) {
|
| - var e = array[0];
|
| - if (IS_STRING(e)) return e;
|
| - return convert(e);
|
| - }
|
| -
|
| - // Construct an array for the elements.
|
| - var elements = new InternalArray(length);
|
| -
|
| - // We pull the empty separator check outside the loop for speed!
|
| - if (separator.length == 0) {
|
| - var elements_length = 0;
|
| - for (var i = 0; i < length; i++) {
|
| - var e = array[i];
|
| - if (!IS_STRING(e)) e = convert(e);
|
| - elements[elements_length++] = e;
|
| - }
|
| - elements.length = elements_length;
|
| - var result = %_FastOneByteArrayJoin(elements, '');
|
| - if (!IS_UNDEFINED(result)) return result;
|
| - return %StringBuilderConcat(elements, elements_length, '');
|
| - }
|
| - // Non-empty separator case.
|
| - // If the first element is a number then use the heuristic that the
|
| - // remaining elements are also likely to be numbers.
|
| - if (!IS_NUMBER(array[0])) {
|
| - for (var i = 0; i < length; i++) {
|
| - var e = array[i];
|
| - if (!IS_STRING(e)) e = convert(e);
|
| - elements[i] = e;
|
| - }
|
| - } else {
|
| - for (var i = 0; i < length; i++) {
|
| - var e = array[i];
|
| - if (IS_NUMBER(e)) {
|
| - e = %_NumberToString(e);
|
| - } else if (!IS_STRING(e)) {
|
| - e = convert(e);
|
| - }
|
| - elements[i] = e;
|
| - }
|
| - }
|
| - var result = %_FastOneByteArrayJoin(elements, separator);
|
| - if (!IS_UNDEFINED(result)) return result;
|
| -
|
| - return %StringBuilderJoin(elements, length, separator);
|
| - } finally {
|
| - // Make sure to remove the last element of the visited array no
|
| - // matter what happens.
|
| - if (is_array) visited_arrays.length = visited_arrays.length - 1;
|
| - }
|
| -}
|
| -
|
| -
|
| -function ConvertToString(x) {
|
| - if (IS_NULL_OR_UNDEFINED(x)) {
|
| - return '';
|
| - } else {
|
| - return TO_STRING(x);
|
| - }
|
| -}
|
| -
|
| -
|
| -function ConvertToLocaleString(e) {
|
| - if (IS_NULL_OR_UNDEFINED(e)) {
|
| - return '';
|
| - } else {
|
| - return TO_STRING(e.toLocaleString());
|
| - }
|
| -}
|
| -
|
| -
|
| -// This function implements the optimized splice implementation that can use
|
| -// special array operations to handle sparse arrays in a sensible fashion.
|
| -function SparseSlice(array, start_i, del_count, len, deleted_elements) {
|
| - // Move deleted elements to a new array (the return value from splice).
|
| - var indices = %GetArrayKeys(array, start_i + del_count);
|
| - if (IS_NUMBER(indices)) {
|
| - var limit = indices;
|
| - for (var i = start_i; i < limit; ++i) {
|
| - var current = array[i];
|
| - if (!IS_UNDEFINED(current) || i in array) {
|
| - %AddElement(deleted_elements, i - start_i, current);
|
| - }
|
| - }
|
| - } else {
|
| - var length = indices.length;
|
| - for (var k = 0; k < length; ++k) {
|
| - var key = indices[k];
|
| - if (!IS_UNDEFINED(key)) {
|
| - if (key >= start_i) {
|
| - var current = array[key];
|
| - if (!IS_UNDEFINED(current) || key in array) {
|
| - %AddElement(deleted_elements, key - start_i, current);
|
| - }
|
| - }
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -// This function implements the optimized splice implementation that can use
|
| -// special array operations to handle sparse arrays in a sensible fashion.
|
| -function SparseMove(array, start_i, del_count, len, num_additional_args) {
|
| - // Bail out if no moving is necessary.
|
| - if (num_additional_args === del_count) return;
|
| - // Move data to new array.
|
| - var new_array = new InternalArray(
|
| - // Clamp array length to 2^32-1 to avoid early RangeError.
|
| - MathMin(len - del_count + num_additional_args, 0xffffffff));
|
| - var big_indices;
|
| - var indices = %GetArrayKeys(array, len);
|
| - if (IS_NUMBER(indices)) {
|
| - var limit = indices;
|
| - for (var i = 0; i < start_i && i < limit; ++i) {
|
| - var current = array[i];
|
| - if (!IS_UNDEFINED(current) || i in array) {
|
| - new_array[i] = current;
|
| - }
|
| - }
|
| - for (var i = start_i + del_count; i < limit; ++i) {
|
| - var current = array[i];
|
| - if (!IS_UNDEFINED(current) || i in array) {
|
| - new_array[i - del_count + num_additional_args] = current;
|
| - }
|
| - }
|
| - } else {
|
| - var length = indices.length;
|
| - for (var k = 0; k < length; ++k) {
|
| - var key = indices[k];
|
| - if (!IS_UNDEFINED(key)) {
|
| - if (key < start_i) {
|
| - var current = array[key];
|
| - if (!IS_UNDEFINED(current) || key in array) {
|
| - new_array[key] = current;
|
| - }
|
| - } else if (key >= start_i + del_count) {
|
| - var current = array[key];
|
| - if (!IS_UNDEFINED(current) || key in array) {
|
| - var new_key = key - del_count + num_additional_args;
|
| - new_array[new_key] = current;
|
| - if (new_key > 0xfffffffe) {
|
| - big_indices = big_indices || new InternalArray();
|
| - big_indices.push(new_key);
|
| - }
|
| - }
|
| - }
|
| - }
|
| - }
|
| - }
|
| - // Move contents of new_array into this array
|
| - %MoveArrayContents(new_array, array);
|
| - // Add any moved values that aren't elements anymore.
|
| - if (!IS_UNDEFINED(big_indices)) {
|
| - var length = big_indices.length;
|
| - for (var i = 0; i < length; ++i) {
|
| - var key = big_indices[i];
|
| - array[key] = new_array[key];
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -// This is part of the old simple-minded splice. We are using it either
|
| -// because the receiver is not an array (so we have no choice) or because we
|
| -// know we are not deleting or moving a lot of elements.
|
| -function SimpleSlice(array, start_i, del_count, len, deleted_elements) {
|
| - var is_array = IS_ARRAY(array);
|
| - for (var i = 0; i < del_count; i++) {
|
| - var index = start_i + i;
|
| - if (HAS_INDEX(array, index, is_array)) {
|
| - var current = array[index];
|
| - // The spec requires [[DefineOwnProperty]] here, %AddElement is close
|
| - // enough (in that it ignores the prototype).
|
| - %AddElement(deleted_elements, i, current);
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -function SimpleMove(array, start_i, del_count, len, num_additional_args) {
|
| - var is_array = IS_ARRAY(array);
|
| - if (num_additional_args !== del_count) {
|
| - // Move the existing elements after the elements to be deleted
|
| - // to the right position in the resulting array.
|
| - if (num_additional_args > del_count) {
|
| - for (var i = len - del_count; i > start_i; i--) {
|
| - var from_index = i + del_count - 1;
|
| - var to_index = i + num_additional_args - 1;
|
| - if (HAS_INDEX(array, from_index, is_array)) {
|
| - array[to_index] = array[from_index];
|
| - } else {
|
| - delete array[to_index];
|
| - }
|
| - }
|
| - } else {
|
| - for (var i = start_i; i < len - del_count; i++) {
|
| - var from_index = i + del_count;
|
| - var to_index = i + num_additional_args;
|
| - if (HAS_INDEX(array, from_index, is_array)) {
|
| - array[to_index] = array[from_index];
|
| - } else {
|
| - delete array[to_index];
|
| - }
|
| - }
|
| - for (var i = len; i > len - del_count + num_additional_args; i--) {
|
| - delete array[i - 1];
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -// -------------------------------------------------------------------
|
| -
|
| -
|
| -function ArrayToString() {
|
| - var array;
|
| - var func;
|
| - if (IS_ARRAY(this)) {
|
| - func = this.join;
|
| - if (func === ArrayJoin) {
|
| - return Join(this, this.length, ',', ConvertToString);
|
| - }
|
| - array = this;
|
| - } else {
|
| - array = TO_OBJECT(this);
|
| - func = array.join;
|
| - }
|
| - if (!IS_CALLABLE(func)) {
|
| - return %_CallFunction(array, ObjectToString);
|
| - }
|
| - return %_Call(func, array);
|
| -}
|
| -
|
| -
|
| -function InnerArrayToLocaleString(array, length) {
|
| - var len = TO_LENGTH_OR_UINT32(length);
|
| - if (len === 0) return "";
|
| - return Join(array, len, ',', ConvertToLocaleString);
|
| -}
|
| -
|
| -
|
| -function ArrayToLocaleString() {
|
| - var array = TO_OBJECT(this);
|
| - var arrayLen = array.length;
|
| - return InnerArrayToLocaleString(array, arrayLen);
|
| -}
|
| -
|
| -
|
| -function InnerArrayJoin(separator, array, length) {
|
| - if (IS_UNDEFINED(separator)) {
|
| - separator = ',';
|
| - } else {
|
| - separator = TO_STRING(separator);
|
| - }
|
| -
|
| - var result = %_FastOneByteArrayJoin(array, separator);
|
| - if (!IS_UNDEFINED(result)) return result;
|
| -
|
| - // Fast case for one-element arrays.
|
| - if (length === 1) {
|
| - var e = array[0];
|
| - if (IS_NULL_OR_UNDEFINED(e)) return '';
|
| - return TO_STRING(e);
|
| - }
|
| -
|
| - return Join(array, length, separator, ConvertToString);
|
| -}
|
| -
|
| -
|
| -function ArrayJoin(separator) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.join");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| -
|
| - return InnerArrayJoin(separator, array, length);
|
| -}
|
| -
|
| -
|
| -function ObservedArrayPop(n) {
|
| - n--;
|
| - var value = this[n];
|
| -
|
| - try {
|
| - $observeBeginPerformSplice(this);
|
| - delete this[n];
|
| - this.length = n;
|
| - } finally {
|
| - $observeEndPerformSplice(this);
|
| - $observeEnqueueSpliceRecord(this, n, [value], 0);
|
| - }
|
| -
|
| - return value;
|
| -}
|
| -
|
| -
|
| -// Removes the last element from the array and returns it. See
|
| -// ECMA-262, section 15.4.4.6.
|
| -function ArrayPop() {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.pop");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var n = TO_LENGTH_OR_UINT32(array.length);
|
| - if (n == 0) {
|
| - array.length = n;
|
| - return;
|
| - }
|
| -
|
| - if (%IsObserved(array))
|
| - return ObservedArrayPop.call(array, n);
|
| -
|
| - n--;
|
| - var value = array[n];
|
| - Delete(array, n, true);
|
| - array.length = n;
|
| - return value;
|
| -}
|
| -
|
| -
|
| -function ObservedArrayPush() {
|
| - var n = TO_LENGTH_OR_UINT32(this.length);
|
| - var m = %_ArgumentsLength();
|
| -
|
| - try {
|
| - $observeBeginPerformSplice(this);
|
| - for (var i = 0; i < m; i++) {
|
| - this[i+n] = %_Arguments(i);
|
| - }
|
| - var new_length = n + m;
|
| - this.length = new_length;
|
| - } finally {
|
| - $observeEndPerformSplice(this);
|
| - $observeEnqueueSpliceRecord(this, n, [], m);
|
| - }
|
| -
|
| - return new_length;
|
| -}
|
| -
|
| -
|
| -// Appends the arguments to the end of the array and returns the new
|
| -// length of the array. See ECMA-262, section 15.4.4.7.
|
| -function ArrayPush() {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.push");
|
| -
|
| - if (%IsObserved(this))
|
| - return ObservedArrayPush.apply(this, arguments);
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var n = TO_LENGTH_OR_UINT32(array.length);
|
| - var m = %_ArgumentsLength();
|
| -
|
| - for (var i = 0; i < m; i++) {
|
| - array[i+n] = %_Arguments(i);
|
| - }
|
| -
|
| - var new_length = n + m;
|
| - array.length = new_length;
|
| - return new_length;
|
| -}
|
| -
|
| -
|
| -// For implementing reverse() on large, sparse arrays.
|
| -function SparseReverse(array, len) {
|
| - var keys = GetSortedArrayKeys(array, %GetArrayKeys(array, len));
|
| - var high_counter = keys.length - 1;
|
| - var low_counter = 0;
|
| - while (low_counter <= high_counter) {
|
| - var i = keys[low_counter];
|
| - var j = keys[high_counter];
|
| -
|
| - var j_complement = len - j - 1;
|
| - var low, high;
|
| -
|
| - if (j_complement <= i) {
|
| - high = j;
|
| - while (keys[--high_counter] == j) { }
|
| - low = j_complement;
|
| - }
|
| - if (j_complement >= i) {
|
| - low = i;
|
| - while (keys[++low_counter] == i) { }
|
| - high = len - i - 1;
|
| - }
|
| -
|
| - var current_i = array[low];
|
| - if (!IS_UNDEFINED(current_i) || low in array) {
|
| - var current_j = array[high];
|
| - if (!IS_UNDEFINED(current_j) || high in array) {
|
| - array[low] = current_j;
|
| - array[high] = current_i;
|
| - } else {
|
| - array[high] = current_i;
|
| - delete array[low];
|
| - }
|
| - } else {
|
| - var current_j = array[high];
|
| - if (!IS_UNDEFINED(current_j) || high in array) {
|
| - array[low] = current_j;
|
| - delete array[high];
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -function PackedArrayReverse(array, len) {
|
| - var j = len - 1;
|
| - for (var i = 0; i < j; i++, j--) {
|
| - var current_i = array[i];
|
| - var current_j = array[j];
|
| - array[i] = current_j;
|
| - array[j] = current_i;
|
| - }
|
| - return array;
|
| -}
|
| -
|
| -
|
| -function GenericArrayReverse(array, len) {
|
| - var j = len - 1;
|
| - for (var i = 0; i < j; i++, j--) {
|
| - if (i in array) {
|
| - var current_i = array[i];
|
| - if (j in array) {
|
| - var current_j = array[j];
|
| - array[i] = current_j;
|
| - array[j] = current_i;
|
| - } else {
|
| - array[j] = current_i;
|
| - delete array[i];
|
| - }
|
| - } else {
|
| - if (j in array) {
|
| - var current_j = array[j];
|
| - array[i] = current_j;
|
| - delete array[j];
|
| - }
|
| - }
|
| - }
|
| - return array;
|
| -}
|
| -
|
| -
|
| -function ArrayReverse() {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reverse");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var len = TO_LENGTH_OR_UINT32(array.length);
|
| - var isArray = IS_ARRAY(array);
|
| -
|
| - if (UseSparseVariant(array, len, isArray, len)) {
|
| - %NormalizeElements(array);
|
| - SparseReverse(array, len);
|
| - return array;
|
| - } else if (isArray && %_HasFastPackedElements(array)) {
|
| - return PackedArrayReverse(array, len);
|
| - } else {
|
| - return GenericArrayReverse(array, len);
|
| - }
|
| -}
|
| -
|
| -
|
| -function ObservedArrayShift(len) {
|
| - var first = this[0];
|
| -
|
| - try {
|
| - $observeBeginPerformSplice(this);
|
| - SimpleMove(this, 0, 1, len, 0);
|
| - this.length = len - 1;
|
| - } finally {
|
| - $observeEndPerformSplice(this);
|
| - $observeEnqueueSpliceRecord(this, 0, [first], 0);
|
| - }
|
| -
|
| - return first;
|
| -}
|
| -
|
| -
|
| -function ArrayShift() {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.shift");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var len = TO_LENGTH_OR_UINT32(array.length);
|
| -
|
| - if (len === 0) {
|
| - array.length = 0;
|
| - return;
|
| - }
|
| -
|
| - if (ObjectIsSealed(array)) throw MakeTypeError(kArrayFunctionsOnSealed);
|
| -
|
| - if (%IsObserved(array))
|
| - return ObservedArrayShift.call(array, len);
|
| -
|
| - var first = array[0];
|
| -
|
| - if (UseSparseVariant(array, len, IS_ARRAY(array), len)) {
|
| - SparseMove(array, 0, 1, len, 0);
|
| - } else {
|
| - SimpleMove(array, 0, 1, len, 0);
|
| - }
|
| -
|
| - array.length = len - 1;
|
| -
|
| - return first;
|
| -}
|
| -
|
| -
|
| -function ObservedArrayUnshift() {
|
| - var len = TO_LENGTH_OR_UINT32(this.length);
|
| - var num_arguments = %_ArgumentsLength();
|
| -
|
| - try {
|
| - $observeBeginPerformSplice(this);
|
| - SimpleMove(this, 0, 0, len, num_arguments);
|
| - for (var i = 0; i < num_arguments; i++) {
|
| - this[i] = %_Arguments(i);
|
| - }
|
| - var new_length = len + num_arguments;
|
| - this.length = new_length;
|
| - } finally {
|
| - $observeEndPerformSplice(this);
|
| - $observeEnqueueSpliceRecord(this, 0, [], num_arguments);
|
| - }
|
| -
|
| - return new_length;
|
| -}
|
| -
|
| -
|
| -function ArrayUnshift(arg1) { // length == 1
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.unshift");
|
| -
|
| - if (%IsObserved(this))
|
| - return ObservedArrayUnshift.apply(this, arguments);
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var len = TO_LENGTH_OR_UINT32(array.length);
|
| - var num_arguments = %_ArgumentsLength();
|
| -
|
| - if (len > 0 && UseSparseVariant(array, len, IS_ARRAY(array), len) &&
|
| - !ObjectIsSealed(array)) {
|
| - SparseMove(array, 0, 0, len, num_arguments);
|
| - } else {
|
| - SimpleMove(array, 0, 0, len, num_arguments);
|
| - }
|
| -
|
| - for (var i = 0; i < num_arguments; i++) {
|
| - array[i] = %_Arguments(i);
|
| - }
|
| -
|
| - var new_length = len + num_arguments;
|
| - array.length = new_length;
|
| - return new_length;
|
| -}
|
| -
|
| -
|
| -function ArraySlice(start, end) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.slice");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var len = TO_LENGTH_OR_UINT32(array.length);
|
| - var start_i = TO_INTEGER(start);
|
| - var end_i = len;
|
| -
|
| - if (!IS_UNDEFINED(end)) end_i = TO_INTEGER(end);
|
| -
|
| - if (start_i < 0) {
|
| - start_i += len;
|
| - if (start_i < 0) start_i = 0;
|
| - } else {
|
| - if (start_i > len) start_i = len;
|
| - }
|
| -
|
| - if (end_i < 0) {
|
| - end_i += len;
|
| - if (end_i < 0) end_i = 0;
|
| - } else {
|
| - if (end_i > len) end_i = len;
|
| - }
|
| -
|
| - var result = [];
|
| -
|
| - if (end_i < start_i) return result;
|
| -
|
| - if (UseSparseVariant(array, len, IS_ARRAY(array), end_i - start_i)) {
|
| - %NormalizeElements(array);
|
| - %NormalizeElements(result);
|
| - SparseSlice(array, start_i, end_i - start_i, len, result);
|
| - } else {
|
| - SimpleSlice(array, start_i, end_i - start_i, len, result);
|
| - }
|
| -
|
| - result.length = end_i - start_i;
|
| -
|
| - return result;
|
| -}
|
| -
|
| -
|
| -function ComputeSpliceStartIndex(start_i, len) {
|
| - if (start_i < 0) {
|
| - start_i += len;
|
| - return start_i < 0 ? 0 : start_i;
|
| - }
|
| -
|
| - return start_i > len ? len : start_i;
|
| -}
|
| -
|
| -
|
| -function ComputeSpliceDeleteCount(delete_count, num_arguments, len, start_i) {
|
| - // SpiderMonkey, TraceMonkey and JSC treat the case where no delete count is
|
| - // given as a request to delete all the elements from the start.
|
| - // And it differs from the case of undefined delete count.
|
| - // This does not follow ECMA-262, but we do the same for
|
| - // compatibility.
|
| - var del_count = 0;
|
| - if (num_arguments == 1)
|
| - return len - start_i;
|
| -
|
| - del_count = TO_INTEGER(delete_count);
|
| - if (del_count < 0)
|
| - return 0;
|
| -
|
| - if (del_count > len - start_i)
|
| - return len - start_i;
|
| -
|
| - return del_count;
|
| -}
|
| -
|
| -
|
| -function ObservedArraySplice(start, delete_count) {
|
| - var num_arguments = %_ArgumentsLength();
|
| - var len = TO_LENGTH_OR_UINT32(this.length);
|
| - var start_i = ComputeSpliceStartIndex(TO_INTEGER(start), len);
|
| - var del_count = ComputeSpliceDeleteCount(delete_count, num_arguments, len,
|
| - start_i);
|
| - var deleted_elements = [];
|
| - deleted_elements.length = del_count;
|
| - var num_elements_to_add = num_arguments > 2 ? num_arguments - 2 : 0;
|
| -
|
| - try {
|
| - $observeBeginPerformSplice(this);
|
| -
|
| - SimpleSlice(this, start_i, del_count, len, deleted_elements);
|
| - SimpleMove(this, start_i, del_count, len, num_elements_to_add);
|
| -
|
| - // Insert the arguments into the resulting array in
|
| - // place of the deleted elements.
|
| - var i = start_i;
|
| - var arguments_index = 2;
|
| - var arguments_length = %_ArgumentsLength();
|
| - while (arguments_index < arguments_length) {
|
| - this[i++] = %_Arguments(arguments_index++);
|
| - }
|
| - this.length = len - del_count + num_elements_to_add;
|
| -
|
| - } finally {
|
| - $observeEndPerformSplice(this);
|
| - if (deleted_elements.length || num_elements_to_add) {
|
| - $observeEnqueueSpliceRecord(this,
|
| - start_i,
|
| - deleted_elements.slice(),
|
| - num_elements_to_add);
|
| - }
|
| - }
|
| -
|
| - // Return the deleted elements.
|
| - return deleted_elements;
|
| -}
|
| -
|
| -
|
| -function ArraySplice(start, delete_count) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.splice");
|
| -
|
| - if (%IsObserved(this))
|
| - return ObservedArraySplice.apply(this, arguments);
|
| -
|
| - var num_arguments = %_ArgumentsLength();
|
| - var array = TO_OBJECT(this);
|
| - var len = TO_LENGTH_OR_UINT32(array.length);
|
| - var start_i = ComputeSpliceStartIndex(TO_INTEGER(start), len);
|
| - var del_count = ComputeSpliceDeleteCount(delete_count, num_arguments, len,
|
| - start_i);
|
| - var deleted_elements = [];
|
| - deleted_elements.length = del_count;
|
| - var num_elements_to_add = num_arguments > 2 ? num_arguments - 2 : 0;
|
| -
|
| - if (del_count != num_elements_to_add && ObjectIsSealed(array)) {
|
| - throw MakeTypeError(kArrayFunctionsOnSealed);
|
| - } else if (del_count > 0 && ObjectIsFrozen(array)) {
|
| - throw MakeTypeError(kArrayFunctionsOnFrozen);
|
| - }
|
| -
|
| - var changed_elements = del_count;
|
| - if (num_elements_to_add != del_count) {
|
| - // If the slice needs to do a actually move elements after the insertion
|
| - // point, then include those in the estimate of changed elements.
|
| - changed_elements += len - start_i - del_count;
|
| - }
|
| - if (UseSparseVariant(array, len, IS_ARRAY(array), changed_elements)) {
|
| - %NormalizeElements(array);
|
| - %NormalizeElements(deleted_elements);
|
| - SparseSlice(array, start_i, del_count, len, deleted_elements);
|
| - SparseMove(array, start_i, del_count, len, num_elements_to_add);
|
| - } else {
|
| - SimpleSlice(array, start_i, del_count, len, deleted_elements);
|
| - SimpleMove(array, start_i, del_count, len, num_elements_to_add);
|
| - }
|
| -
|
| - // Insert the arguments into the resulting array in
|
| - // place of the deleted elements.
|
| - var i = start_i;
|
| - var arguments_index = 2;
|
| - var arguments_length = %_ArgumentsLength();
|
| - while (arguments_index < arguments_length) {
|
| - array[i++] = %_Arguments(arguments_index++);
|
| - }
|
| - array.length = len - del_count + num_elements_to_add;
|
| -
|
| - // Return the deleted elements.
|
| - return deleted_elements;
|
| -}
|
| -
|
| -
|
| -function InnerArraySort(array, length, comparefn) {
|
| - // In-place QuickSort algorithm.
|
| - // For short (length <= 22) arrays, insertion sort is used for efficiency.
|
| -
|
| - if (!IS_CALLABLE(comparefn)) {
|
| - comparefn = function (x, y) {
|
| - if (x === y) return 0;
|
| - if (%_IsSmi(x) && %_IsSmi(y)) {
|
| - return %SmiLexicographicCompare(x, y);
|
| - }
|
| - x = TO_STRING(x);
|
| - y = TO_STRING(y);
|
| - if (x == y) return 0;
|
| - else return x < y ? -1 : 1;
|
| - };
|
| - }
|
| - var InsertionSort = function InsertionSort(a, from, to) {
|
| - for (var i = from + 1; i < to; i++) {
|
| - var element = a[i];
|
| - for (var j = i - 1; j >= from; j--) {
|
| - var tmp = a[j];
|
| - var order = comparefn(tmp, element);
|
| - if (order > 0) {
|
| - a[j + 1] = tmp;
|
| - } else {
|
| - break;
|
| - }
|
| - }
|
| - a[j + 1] = element;
|
| - }
|
| - };
|
| -
|
| - var GetThirdIndex = function(a, from, to) {
|
| - var t_array = new InternalArray();
|
| - // Use both 'from' and 'to' to determine the pivot candidates.
|
| - var increment = 200 + ((to - from) & 15);
|
| - var j = 0;
|
| - from += 1;
|
| - to -= 1;
|
| - for (var i = from; i < to; i += increment) {
|
| - t_array[j] = [i, a[i]];
|
| - j++;
|
| - }
|
| - t_array.sort(function(a, b) {
|
| - return comparefn(a[1], b[1]);
|
| - });
|
| - var third_index = t_array[t_array.length >> 1][0];
|
| - return third_index;
|
| - }
|
| -
|
| - var QuickSort = function QuickSort(a, from, to) {
|
| - var third_index = 0;
|
| - while (true) {
|
| - // Insertion sort is faster for short arrays.
|
| - if (to - from <= 10) {
|
| - InsertionSort(a, from, to);
|
| - return;
|
| - }
|
| - if (to - from > 1000) {
|
| - third_index = GetThirdIndex(a, from, to);
|
| - } else {
|
| - third_index = from + ((to - from) >> 1);
|
| - }
|
| - // Find a pivot as the median of first, last and middle element.
|
| - var v0 = a[from];
|
| - var v1 = a[to - 1];
|
| - var v2 = a[third_index];
|
| - var c01 = comparefn(v0, v1);
|
| - if (c01 > 0) {
|
| - // v1 < v0, so swap them.
|
| - var tmp = v0;
|
| - v0 = v1;
|
| - v1 = tmp;
|
| - } // v0 <= v1.
|
| - var c02 = comparefn(v0, v2);
|
| - if (c02 >= 0) {
|
| - // v2 <= v0 <= v1.
|
| - var tmp = v0;
|
| - v0 = v2;
|
| - v2 = v1;
|
| - v1 = tmp;
|
| - } else {
|
| - // v0 <= v1 && v0 < v2
|
| - var c12 = comparefn(v1, v2);
|
| - if (c12 > 0) {
|
| - // v0 <= v2 < v1
|
| - var tmp = v1;
|
| - v1 = v2;
|
| - v2 = tmp;
|
| - }
|
| - }
|
| - // v0 <= v1 <= v2
|
| - a[from] = v0;
|
| - a[to - 1] = v2;
|
| - var pivot = v1;
|
| - var low_end = from + 1; // Upper bound of elements lower than pivot.
|
| - var high_start = to - 1; // Lower bound of elements greater than pivot.
|
| - a[third_index] = a[low_end];
|
| - a[low_end] = pivot;
|
| -
|
| - // From low_end to i are elements equal to pivot.
|
| - // From i to high_start are elements that haven't been compared yet.
|
| - partition: for (var i = low_end + 1; i < high_start; i++) {
|
| - var element = a[i];
|
| - var order = comparefn(element, pivot);
|
| - if (order < 0) {
|
| - a[i] = a[low_end];
|
| - a[low_end] = element;
|
| - low_end++;
|
| - } else if (order > 0) {
|
| - do {
|
| - high_start--;
|
| - if (high_start == i) break partition;
|
| - var top_elem = a[high_start];
|
| - order = comparefn(top_elem, pivot);
|
| - } while (order > 0);
|
| - a[i] = a[high_start];
|
| - a[high_start] = element;
|
| - if (order < 0) {
|
| - element = a[i];
|
| - a[i] = a[low_end];
|
| - a[low_end] = element;
|
| - low_end++;
|
| - }
|
| - }
|
| - }
|
| - if (to - high_start < low_end - from) {
|
| - QuickSort(a, high_start, to);
|
| - to = low_end;
|
| - } else {
|
| - QuickSort(a, from, low_end);
|
| - from = high_start;
|
| - }
|
| - }
|
| - };
|
| -
|
| - // Copy elements in the range 0..length from obj's prototype chain
|
| - // to obj itself, if obj has holes. Return one more than the maximal index
|
| - // of a prototype property.
|
| - var CopyFromPrototype = function CopyFromPrototype(obj, length) {
|
| - var max = 0;
|
| - for (var proto = %_GetPrototype(obj); proto; proto = %_GetPrototype(proto)) {
|
| - var indices = %GetArrayKeys(proto, length);
|
| - if (IS_NUMBER(indices)) {
|
| - // It's an interval.
|
| - var proto_length = indices;
|
| - for (var i = 0; i < proto_length; i++) {
|
| - if (!HAS_OWN_PROPERTY(obj, i) && HAS_OWN_PROPERTY(proto, i)) {
|
| - obj[i] = proto[i];
|
| - if (i >= max) { max = i + 1; }
|
| - }
|
| - }
|
| - } else {
|
| - for (var i = 0; i < indices.length; i++) {
|
| - var index = indices[i];
|
| - if (!IS_UNDEFINED(index) && !HAS_OWN_PROPERTY(obj, index)
|
| - && HAS_OWN_PROPERTY(proto, index)) {
|
| - obj[index] = proto[index];
|
| - if (index >= max) { max = index + 1; }
|
| - }
|
| - }
|
| - }
|
| - }
|
| - return max;
|
| - };
|
| -
|
| - // Set a value of "undefined" on all indices in the range from..to
|
| - // where a prototype of obj has an element. I.e., shadow all prototype
|
| - // elements in that range.
|
| - var ShadowPrototypeElements = function(obj, from, to) {
|
| - for (var proto = %_GetPrototype(obj); proto; proto = %_GetPrototype(proto)) {
|
| - var indices = %GetArrayKeys(proto, to);
|
| - if (IS_NUMBER(indices)) {
|
| - // It's an interval.
|
| - var proto_length = indices;
|
| - for (var i = from; i < proto_length; i++) {
|
| - if (HAS_OWN_PROPERTY(proto, i)) {
|
| - obj[i] = UNDEFINED;
|
| - }
|
| - }
|
| - } else {
|
| - for (var i = 0; i < indices.length; i++) {
|
| - var index = indices[i];
|
| - if (!IS_UNDEFINED(index) && from <= index &&
|
| - HAS_OWN_PROPERTY(proto, index)) {
|
| - obj[index] = UNDEFINED;
|
| - }
|
| - }
|
| - }
|
| - }
|
| - };
|
| -
|
| - var SafeRemoveArrayHoles = function SafeRemoveArrayHoles(obj) {
|
| - // Copy defined elements from the end to fill in all holes and undefineds
|
| - // in the beginning of the array. Write undefineds and holes at the end
|
| - // after loop is finished.
|
| - var first_undefined = 0;
|
| - var last_defined = length - 1;
|
| - var num_holes = 0;
|
| - while (first_undefined < last_defined) {
|
| - // Find first undefined element.
|
| - while (first_undefined < last_defined &&
|
| - !IS_UNDEFINED(obj[first_undefined])) {
|
| - first_undefined++;
|
| - }
|
| - // Maintain the invariant num_holes = the number of holes in the original
|
| - // array with indices <= first_undefined or > last_defined.
|
| - if (!HAS_OWN_PROPERTY(obj, first_undefined)) {
|
| - num_holes++;
|
| - }
|
| -
|
| - // Find last defined element.
|
| - while (first_undefined < last_defined &&
|
| - IS_UNDEFINED(obj[last_defined])) {
|
| - if (!HAS_OWN_PROPERTY(obj, last_defined)) {
|
| - num_holes++;
|
| - }
|
| - last_defined--;
|
| - }
|
| - if (first_undefined < last_defined) {
|
| - // Fill in hole or undefined.
|
| - obj[first_undefined] = obj[last_defined];
|
| - obj[last_defined] = UNDEFINED;
|
| - }
|
| - }
|
| - // If there were any undefineds in the entire array, first_undefined
|
| - // points to one past the last defined element. Make this true if
|
| - // there were no undefineds, as well, so that first_undefined == number
|
| - // of defined elements.
|
| - if (!IS_UNDEFINED(obj[first_undefined])) first_undefined++;
|
| - // Fill in the undefineds and the holes. There may be a hole where
|
| - // an undefined should be and vice versa.
|
| - var i;
|
| - for (i = first_undefined; i < length - num_holes; i++) {
|
| - obj[i] = UNDEFINED;
|
| - }
|
| - for (i = length - num_holes; i < length; i++) {
|
| - // For compatability with Webkit, do not expose elements in the prototype.
|
| - if (i in %_GetPrototype(obj)) {
|
| - obj[i] = UNDEFINED;
|
| - } else {
|
| - delete obj[i];
|
| - }
|
| - }
|
| -
|
| - // Return the number of defined elements.
|
| - return first_undefined;
|
| - };
|
| -
|
| - if (length < 2) return array;
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var max_prototype_element;
|
| - if (!is_array) {
|
| - // For compatibility with JSC, we also sort elements inherited from
|
| - // the prototype chain on non-Array objects.
|
| - // We do this by copying them to this object and sorting only
|
| - // own elements. This is not very efficient, but sorting with
|
| - // inherited elements happens very, very rarely, if at all.
|
| - // The specification allows "implementation dependent" behavior
|
| - // if an element on the prototype chain has an element that
|
| - // might interact with sorting.
|
| - max_prototype_element = CopyFromPrototype(array, length);
|
| - }
|
| -
|
| - // %RemoveArrayHoles returns -1 if fast removal is not supported.
|
| - var num_non_undefined = %RemoveArrayHoles(array, length);
|
| -
|
| - if (num_non_undefined == -1) {
|
| - // The array is observed, or there were indexed accessors in the array.
|
| - // Move array holes and undefineds to the end using a Javascript function
|
| - // that is safe in the presence of accessors and is observable.
|
| - num_non_undefined = SafeRemoveArrayHoles(array);
|
| - }
|
| -
|
| - QuickSort(array, 0, num_non_undefined);
|
| -
|
| - if (!is_array && (num_non_undefined + 1 < max_prototype_element)) {
|
| - // For compatibility with JSC, we shadow any elements in the prototype
|
| - // chain that has become exposed by sort moving a hole to its position.
|
| - ShadowPrototypeElements(array, num_non_undefined, max_prototype_element);
|
| - }
|
| -
|
| - return array;
|
| -}
|
| -
|
| -
|
| -function ArraySort(comparefn) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.sort");
|
| -
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - return InnerArraySort(array, length, comparefn);
|
| -}
|
| -
|
| -
|
| -// The following functions cannot be made efficient on sparse arrays while
|
| -// preserving the semantics, since the calls to the receiver function can add
|
| -// or delete elements from the array.
|
| -function InnerArrayFilter(f, receiver, array, length) {
|
| - if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f);
|
| -
|
| - var accumulator = new InternalArray();
|
| - var accumulator_length = 0;
|
| - var is_array = IS_ARRAY(array);
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(f);
|
| - for (var i = 0; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(f);
|
| - if (%_Call(f, receiver, element, i, array)) {
|
| - accumulator[accumulator_length++] = element;
|
| - }
|
| - }
|
| - }
|
| - return accumulator;
|
| -}
|
| -
|
| -function ArrayFilter(f, receiver) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.filter");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - var accumulator = InnerArrayFilter(f, receiver, array, length);
|
| - var result = new GlobalArray();
|
| - %MoveArrayContents(accumulator, result);
|
| - return result;
|
| -}
|
| -
|
| -function InnerArrayForEach(f, receiver, array, length) {
|
| - if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f);
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(f);
|
| - for (var i = 0; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(f);
|
| - %_Call(f, receiver, element, i, array);
|
| - }
|
| - }
|
| -}
|
| -
|
| -function ArrayForEach(f, receiver) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.forEach");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - InnerArrayForEach(f, receiver, array, length);
|
| -}
|
| -
|
| -
|
| -function InnerArraySome(f, receiver, array, length) {
|
| - if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f);
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(f);
|
| - for (var i = 0; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(f);
|
| - if (%_Call(f, receiver, element, i, array)) return true;
|
| - }
|
| - }
|
| - return false;
|
| -}
|
| -
|
| -
|
| -// Executes the function once for each element present in the
|
| -// array until it finds one where callback returns true.
|
| -function ArraySome(f, receiver) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.some");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - return InnerArraySome(f, receiver, array, length);
|
| -}
|
| -
|
| -
|
| -function InnerArrayEvery(f, receiver, array, length) {
|
| - if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f);
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(f);
|
| - for (var i = 0; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(f);
|
| - if (!%_Call(f, receiver, element, i, array)) return false;
|
| - }
|
| - }
|
| - return true;
|
| -}
|
| -
|
| -function ArrayEvery(f, receiver) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.every");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - return InnerArrayEvery(f, receiver, array, length);
|
| -}
|
| -
|
| -
|
| -function InnerArrayMap(f, receiver, array, length) {
|
| - if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f);
|
| -
|
| - var accumulator = new InternalArray(length);
|
| - var is_array = IS_ARRAY(array);
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(f);
|
| - for (var i = 0; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(f);
|
| - accumulator[i] = %_Call(f, receiver, element, i, array);
|
| - }
|
| - }
|
| - return accumulator;
|
| -}
|
| -
|
| -
|
| -function ArrayMap(f, receiver) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.map");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - var accumulator = InnerArrayMap(f, receiver, array, length);
|
| - var result = new GlobalArray();
|
| - %MoveArrayContents(accumulator, result);
|
| - return result;
|
| -}
|
| -
|
| -
|
| -// For .indexOf, we don't need to pass in the number of arguments
|
| -// at the callsite since ToInteger(undefined) == 0; however, for
|
| -// .lastIndexOf, we need to pass it, since the behavior for passing
|
| -// undefined is 0 but for not including the argument is length-1.
|
| -function InnerArrayIndexOf(array, element, index, length) {
|
| - if (length == 0) return -1;
|
| - if (IS_UNDEFINED(index)) {
|
| - index = 0;
|
| - } else {
|
| - index = TO_INTEGER(index);
|
| - // If index is negative, index from the end of the array.
|
| - if (index < 0) {
|
| - index = length + index;
|
| - // If index is still negative, search the entire array.
|
| - if (index < 0) index = 0;
|
| - }
|
| - }
|
| - var min = index;
|
| - var max = length;
|
| - if (UseSparseVariant(array, length, IS_ARRAY(array), max - min)) {
|
| - %NormalizeElements(array);
|
| - var indices = %GetArrayKeys(array, length);
|
| - if (IS_NUMBER(indices)) {
|
| - // It's an interval.
|
| - max = indices; // Capped by length already.
|
| - // Fall through to loop below.
|
| - } else {
|
| - if (indices.length == 0) return -1;
|
| - // Get all the keys in sorted order.
|
| - var sortedKeys = GetSortedArrayKeys(array, indices);
|
| - var n = sortedKeys.length;
|
| - var i = 0;
|
| - while (i < n && sortedKeys[i] < index) i++;
|
| - while (i < n) {
|
| - var key = sortedKeys[i];
|
| - if (!IS_UNDEFINED(key) && array[key] === element) return key;
|
| - i++;
|
| - }
|
| - return -1;
|
| - }
|
| - }
|
| - // Lookup through the array.
|
| - if (!IS_UNDEFINED(element)) {
|
| - for (var i = min; i < max; i++) {
|
| - if (array[i] === element) return i;
|
| - }
|
| - return -1;
|
| - }
|
| - // Lookup through the array.
|
| - for (var i = min; i < max; i++) {
|
| - if (IS_UNDEFINED(array[i]) && i in array) {
|
| - return i;
|
| - }
|
| - }
|
| - return -1;
|
| -}
|
| -
|
| -
|
| -function ArrayIndexOf(element, index) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.indexOf");
|
| -
|
| - var length = TO_LENGTH_OR_UINT32(this.length);
|
| - return InnerArrayIndexOf(this, element, index, length);
|
| -}
|
| -
|
| -
|
| -function InnerArrayLastIndexOf(array, element, index, length, argumentsLength) {
|
| - if (length == 0) return -1;
|
| - if (argumentsLength < 2) {
|
| - index = length - 1;
|
| - } else {
|
| - index = TO_INTEGER(index);
|
| - // If index is negative, index from end of the array.
|
| - if (index < 0) index += length;
|
| - // If index is still negative, do not search the array.
|
| - if (index < 0) return -1;
|
| - else if (index >= length) index = length - 1;
|
| - }
|
| - var min = 0;
|
| - var max = index;
|
| - if (UseSparseVariant(array, length, IS_ARRAY(array), index)) {
|
| - %NormalizeElements(array);
|
| - var indices = %GetArrayKeys(array, index + 1);
|
| - if (IS_NUMBER(indices)) {
|
| - // It's an interval.
|
| - max = indices; // Capped by index already.
|
| - // Fall through to loop below.
|
| - } else {
|
| - if (indices.length == 0) return -1;
|
| - // Get all the keys in sorted order.
|
| - var sortedKeys = GetSortedArrayKeys(array, indices);
|
| - var i = sortedKeys.length - 1;
|
| - while (i >= 0) {
|
| - var key = sortedKeys[i];
|
| - if (!IS_UNDEFINED(key) && array[key] === element) return key;
|
| - i--;
|
| - }
|
| - return -1;
|
| - }
|
| - }
|
| - // Lookup through the array.
|
| - if (!IS_UNDEFINED(element)) {
|
| - for (var i = max; i >= min; i--) {
|
| - if (array[i] === element) return i;
|
| - }
|
| - return -1;
|
| - }
|
| - for (var i = max; i >= min; i--) {
|
| - if (IS_UNDEFINED(array[i]) && i in array) {
|
| - return i;
|
| - }
|
| - }
|
| - return -1;
|
| -}
|
| -
|
| -
|
| -function ArrayLastIndexOf(element, index) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.lastIndexOf");
|
| -
|
| - var length = TO_LENGTH_OR_UINT32(this.length);
|
| - return InnerArrayLastIndexOf(this, element, index, length,
|
| - %_ArgumentsLength());
|
| -}
|
| -
|
| -
|
| -function InnerArrayReduce(callback, current, array, length, argumentsLength) {
|
| - if (!IS_CALLABLE(callback)) {
|
| - throw MakeTypeError(kCalledNonCallable, callback);
|
| - }
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var i = 0;
|
| - find_initial: if (argumentsLength < 2) {
|
| - for (; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - current = array[i++];
|
| - break find_initial;
|
| - }
|
| - }
|
| - throw MakeTypeError(kReduceNoInitial);
|
| - }
|
| -
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(callback);
|
| - for (; i < length; i++) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(callback);
|
| - current = callback(current, element, i, array);
|
| - }
|
| - }
|
| - return current;
|
| -}
|
| -
|
| -
|
| -function ArrayReduce(callback, current) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reduce");
|
| -
|
| - // Pull out the length so that modifications to the length in the
|
| - // loop will not affect the looping and side effects are visible.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - return InnerArrayReduce(callback, current, array, length,
|
| - %_ArgumentsLength());
|
| -}
|
| -
|
| -
|
| -function InnerArrayReduceRight(callback, current, array, length,
|
| - argumentsLength) {
|
| - if (!IS_CALLABLE(callback)) {
|
| - throw MakeTypeError(kCalledNonCallable, callback);
|
| - }
|
| -
|
| - var is_array = IS_ARRAY(array);
|
| - var i = length - 1;
|
| - find_initial: if (argumentsLength < 2) {
|
| - for (; i >= 0; i--) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - current = array[i--];
|
| - break find_initial;
|
| - }
|
| - }
|
| - throw MakeTypeError(kReduceNoInitial);
|
| - }
|
| -
|
| - var stepping = DEBUG_IS_ACTIVE && %DebugCallbackSupportsStepping(callback);
|
| - for (; i >= 0; i--) {
|
| - if (HAS_INDEX(array, i, is_array)) {
|
| - var element = array[i];
|
| - // Prepare break slots for debugger step in.
|
| - if (stepping) %DebugPrepareStepInIfStepping(callback);
|
| - current = callback(current, element, i, array);
|
| - }
|
| - }
|
| - return current;
|
| -}
|
| -
|
| -
|
| -function ArrayReduceRight(callback, current) {
|
| - CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reduceRight");
|
| -
|
| - // Pull out the length so that side effects are visible before the
|
| - // callback function is checked.
|
| - var array = TO_OBJECT(this);
|
| - var length = TO_LENGTH_OR_UINT32(array.length);
|
| - return InnerArrayReduceRight(callback, current, array, length,
|
| - %_ArgumentsLength());
|
| -}
|
| -
|
| -// ES5, 15.4.3.2
|
| -function ArrayIsArray(obj) {
|
| - return IS_ARRAY(obj);
|
| -}
|
| -
|
| -
|
| -// -------------------------------------------------------------------
|
| -
|
| -// Set up non-enumerable constructor property on the Array.prototype
|
| -// object.
|
| -%AddNamedProperty(GlobalArray.prototype, "constructor", GlobalArray,
|
| - DONT_ENUM);
|
| -
|
| -// Set up unscopable properties on the Array.prototype object.
|
| -var unscopables = {
|
| - __proto__: null,
|
| - copyWithin: true,
|
| - entries: true,
|
| - fill: true,
|
| - find: true,
|
| - findIndex: true,
|
| - keys: true,
|
| -};
|
| -
|
| -%AddNamedProperty(GlobalArray.prototype, unscopablesSymbol, unscopables,
|
| - DONT_ENUM | READ_ONLY);
|
| -
|
| -// Set up non-enumerable functions on the Array object.
|
| -utils.InstallFunctions(GlobalArray, DONT_ENUM, [
|
| - "isArray", ArrayIsArray
|
| -]);
|
| -
|
| -var specialFunctions = %SpecialArrayFunctions();
|
| -
|
| -var getFunction = function(name, jsBuiltin, len) {
|
| - var f = jsBuiltin;
|
| - if (specialFunctions.hasOwnProperty(name)) {
|
| - f = specialFunctions[name];
|
| - }
|
| - if (!IS_UNDEFINED(len)) {
|
| - %FunctionSetLength(f, len);
|
| - }
|
| - return f;
|
| -};
|
| -
|
| -// Set up non-enumerable functions of the Array.prototype object and
|
| -// set their names.
|
| -// Manipulate the length of some of the functions to meet
|
| -// expectations set by ECMA-262 or Mozilla.
|
| -utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
|
| - "toString", getFunction("toString", ArrayToString),
|
| - "toLocaleString", getFunction("toLocaleString", ArrayToLocaleString),
|
| - "join", getFunction("join", ArrayJoin),
|
| - "pop", getFunction("pop", ArrayPop),
|
| - "push", getFunction("push", ArrayPush, 1),
|
| - "reverse", getFunction("reverse", ArrayReverse),
|
| - "shift", getFunction("shift", ArrayShift),
|
| - "unshift", getFunction("unshift", ArrayUnshift, 1),
|
| - "slice", getFunction("slice", ArraySlice, 2),
|
| - "splice", getFunction("splice", ArraySplice, 2),
|
| - "sort", getFunction("sort", ArraySort),
|
| - "filter", getFunction("filter", ArrayFilter, 1),
|
| - "forEach", getFunction("forEach", ArrayForEach, 1),
|
| - "some", getFunction("some", ArraySome, 1),
|
| - "every", getFunction("every", ArrayEvery, 1),
|
| - "map", getFunction("map", ArrayMap, 1),
|
| - "indexOf", getFunction("indexOf", ArrayIndexOf, 1),
|
| - "lastIndexOf", getFunction("lastIndexOf", ArrayLastIndexOf, 1),
|
| - "reduce", getFunction("reduce", ArrayReduce, 1),
|
| - "reduceRight", getFunction("reduceRight", ArrayReduceRight, 1)
|
| -]);
|
| -
|
| -%FinishArrayPrototypeSetup(GlobalArray.prototype);
|
| -
|
| -// The internal Array prototype doesn't need to be fancy, since it's never
|
| -// exposed to user code.
|
| -// Adding only the functions that are actually used.
|
| -utils.SetUpLockedPrototype(InternalArray, GlobalArray(), [
|
| - "indexOf", getFunction("indexOf", ArrayIndexOf),
|
| - "join", getFunction("join", ArrayJoin),
|
| - "pop", getFunction("pop", ArrayPop),
|
| - "push", getFunction("push", ArrayPush),
|
| - "shift", getFunction("shift", ArrayShift),
|
| - "sort", getFunction("sort", ArraySort),
|
| - "splice", getFunction("splice", ArraySplice)
|
| -]);
|
| -
|
| -utils.SetUpLockedPrototype(InternalPackedArray, GlobalArray(), [
|
| - "join", getFunction("join", ArrayJoin),
|
| - "pop", getFunction("pop", ArrayPop),
|
| - "push", getFunction("push", ArrayPush),
|
| - "shift", getFunction("shift", ArrayShift)
|
| -]);
|
| -
|
| -// -------------------------------------------------------------------
|
| -// Exports
|
| -
|
| -utils.Export(function(to) {
|
| - to.ArrayIndexOf = ArrayIndexOf;
|
| - to.ArrayJoin = ArrayJoin;
|
| - to.ArrayPush = ArrayPush;
|
| - to.ArrayToString = ArrayToString;
|
| - to.InnerArrayEvery = InnerArrayEvery;
|
| - to.InnerArrayFilter = InnerArrayFilter;
|
| - to.InnerArrayForEach = InnerArrayForEach;
|
| - to.InnerArrayIndexOf = InnerArrayIndexOf;
|
| - to.InnerArrayJoin = InnerArrayJoin;
|
| - to.InnerArrayLastIndexOf = InnerArrayLastIndexOf;
|
| - to.InnerArrayMap = InnerArrayMap;
|
| - to.InnerArrayReduce = InnerArrayReduce;
|
| - to.InnerArrayReduceRight = InnerArrayReduceRight;
|
| - to.InnerArraySome = InnerArraySome;
|
| - to.InnerArraySort = InnerArraySort;
|
| - to.InnerArrayToLocaleString = InnerArrayToLocaleString;
|
| - to.PackedArrayReverse = PackedArrayReverse;
|
| -});
|
| -
|
| -%InstallToContext([
|
| - "array_pop", ArrayPop,
|
| - "array_push", ArrayPush,
|
| - "array_shift", ArrayShift,
|
| - "array_splice", ArraySplice,
|
| - "array_slice", ArraySlice,
|
| - "array_unshift", ArrayUnshift,
|
| -]);
|
| -
|
| -});
|
|
|