// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+"use strict";
// This file relies on the fact that the following declarations have been made
// in runtime.js:
function ArrayJoin(separator) {
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.join");
- var length = TO_UINT32(this.length);
+ var array = TO_OBJECT_INLINE(this);
+ var length = TO_UINT32(array.length);
if (IS_UNDEFINED(separator)) {
separator = ',';
} else if (!IS_STRING(separator)) {
separator = NonStringToString(separator);
}
- var result = %_FastAsciiArrayJoin(this, separator);
+ var result = %_FastAsciiArrayJoin(array, separator);
if (!IS_UNDEFINED(result)) return result;
- return Join(this, length, separator, ConvertToString);
+ return Join(array, length, separator, ConvertToString);
}
function ArrayPop() {
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.pop");
- var n = TO_UINT32(this.length);
+ var array = TO_OBJECT_INLINE(this);
+ var n = TO_UINT32(array.length);
if (n == 0) {
- this.length = n;
+ array.length = n;
return;
}
- if ($Object.isSealed(this)) {
- throw MakeTypeError("array_functions_change_sealed",
- ["Array.prototype.pop"]);
- }
-
- if (%IsObserved(this))
- return ObservedArrayPop.call(this, n);
+ if (%IsObserved(array))
+ return ObservedArrayPop.call(array, n);
n--;
- var value = this[n];
- Delete(this, ToName(n), true);
- this.length = n;
+ var value = array[n];
+ Delete(array, ToName(n), true);
+ array.length = n;
return value;
}
for (var i = 0; i < m; i++) {
this[i+n] = %_Arguments(i);
}
- this.length = n + m;
+ var new_length = n + m;
+ this.length = new_length;
} finally {
EndPerformSplice(this);
EnqueueSpliceRecord(this, n, [], m);
}
- return this.length;
+ return new_length;
}
// Appends the arguments to the end of the array and returns the new
function ArrayPush() {
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.push");
- var n = TO_UINT32(this.length);
- var m = %_ArgumentsLength();
- if (m > 0 && $Object.isSealed(this)) {
- throw MakeTypeError("array_functions_change_sealed",
- ["Array.prototype.push"]);
- }
-
if (%IsObserved(this))
return ObservedArrayPush.apply(this, arguments);
+ var array = TO_OBJECT_INLINE(this);
+ var n = TO_UINT32(array.length);
+ var m = %_ArgumentsLength();
+
for (var i = 0; i < m; i++) {
- this[i+n] = %_Arguments(i);
+ // Use SetProperty rather than a direct keyed store to ensure that the store
+ // site doesn't become poisened with an elements transition KeyedStoreIC.
+ %SetProperty(array, i+n, %_Arguments(i), 0, kStrictMode);
}
- this.length = n + m;
- return this.length;
+
+ var new_length = n + m;
+ array.length = new_length;
+ return new_length;
}
function ArrayReverse() {
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reverse");
- var j = TO_UINT32(this.length) - 1;
+ var array = TO_OBJECT_INLINE(this);
+ var j = TO_UINT32(array.length) - 1;
- if (UseSparseVariant(this, j, IS_ARRAY(this))) {
- SparseReverse(this, j+1);
- return this;
+ if (UseSparseVariant(array, j, IS_ARRAY(array))) {
+ SparseReverse(array, j+1);
+ return array;
}
for (var i = 0; i < j; i++, j--) {
- var current_i = this[i];
- if (!IS_UNDEFINED(current_i) || i in this) {
- var current_j = this[j];
- if (!IS_UNDEFINED(current_j) || j in this) {
- this[i] = current_j;
- this[j] = current_i;
+ var current_i = array[i];
+ if (!IS_UNDEFINED(current_i) || i in array) {
+ var current_j = array[j];
+ if (!IS_UNDEFINED(current_j) || j in array) {
+ array[i] = current_j;
+ array[j] = current_i;
} else {
- this[j] = current_i;
- delete this[i];
+ array[j] = current_i;
+ delete array[i];
}
} else {
- var current_j = this[j];
- if (!IS_UNDEFINED(current_j) || j in this) {
- this[i] = current_j;
- delete this[j];
+ var current_j = array[j];
+ if (!IS_UNDEFINED(current_j) || j in array) {
+ array[i] = current_j;
+ delete array[j];
}
}
}
- return this;
+ return array;
}
function ArrayShift() {
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.shift");
- var len = TO_UINT32(this.length);
+ var array = TO_OBJECT_INLINE(this);
+ var len = TO_UINT32(array.length);
if (len === 0) {
- this.length = 0;
+ array.length = 0;
return;
}
- if ($Object.isSealed(this)) {
+ if (ObjectIsSealed(array)) {
throw MakeTypeError("array_functions_change_sealed",
["Array.prototype.shift"]);
}
- if (%IsObserved(this))
- return ObservedArrayShift.call(this, len);
+ if (%IsObserved(array))
+ return ObservedArrayShift.call(array, len);
- var first = this[0];
+ var first = array[0];
- if (IS_ARRAY(this)) {
- SmartMove(this, 0, 1, len, 0);
+ if (IS_ARRAY(array)) {
+ SmartMove(array, 0, 1, len, 0);
} else {
- SimpleMove(this, 0, 1, len, 0);
+ SimpleMove(array, 0, 1, len, 0);
}
- this.length = len - 1;
+ array.length = len - 1;
return first;
}
for (var i = 0; i < num_arguments; i++) {
this[i] = %_Arguments(i);
}
- this.length = len + num_arguments;
+ var new_length = len + num_arguments;
+ this.length = new_length;
} finally {
EndPerformSplice(this);
EnqueueSpliceRecord(this, 0, [], num_arguments);
}
- return len + num_arguments;
+ return new_length;
}
function ArrayUnshift(arg1) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.unshift");
- var len = TO_UINT32(this.length);
- var num_arguments = %_ArgumentsLength();
- var is_sealed = $Object.isSealed(this);
-
- if (num_arguments > 0 && is_sealed) {
- throw MakeTypeError("array_functions_change_sealed",
- ["Array.prototype.unshift"]);
- }
-
if (%IsObserved(this))
return ObservedArrayUnshift.apply(this, arguments);
- if (IS_ARRAY(this) && !is_sealed) {
- SmartMove(this, 0, 0, len, num_arguments);
- } else {
- if (num_arguments == 0 && $Object.isFrozen(this)) {
- // In the zero argument case, values from the prototype come into the
- // object. This can't be allowed on frozen arrays.
- for (var i = 0; i < len; i++) {
- if (!this.hasOwnProperty(i) && !IS_UNDEFINED(this[i])) {
- throw MakeTypeError("array_functions_on_frozen",
- ["Array.prototype.shift"]);
- }
- }
- }
+ var array = TO_OBJECT_INLINE(this);
+ var len = TO_UINT32(array.length);
+ var num_arguments = %_ArgumentsLength();
+ var is_sealed = ObjectIsSealed(array);
- SimpleMove(this, 0, 0, len, num_arguments);
+ if (IS_ARRAY(array) && !is_sealed) {
+ SmartMove(array, 0, 0, len, num_arguments);
+ } else {
+ SimpleMove(array, 0, 0, len, num_arguments);
}
for (var i = 0; i < num_arguments; i++) {
- this[i] = %_Arguments(i);
+ array[i] = %_Arguments(i);
}
- this.length = len + num_arguments;
-
- return this.length;
+ 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 len = TO_UINT32(this.length);
+ var array = TO_OBJECT_INLINE(this);
+ var len = TO_UINT32(array.length);
var start_i = TO_INTEGER(start);
var end_i = len;
if (end_i < start_i) return result;
- if (IS_ARRAY(this) &&
- !%IsObserved(this) &&
+ if (IS_ARRAY(array) &&
+ !%IsObserved(array) &&
(end_i > 1000) &&
- (%EstimateNumberOfElements(this) < end_i)) {
- SmartSlice(this, start_i, end_i - start_i, len, result);
+ (%EstimateNumberOfElements(array) < end_i)) {
+ SmartSlice(array, start_i, end_i - start_i, len, result);
} else {
- SimpleSlice(this, start_i, end_i - start_i, len, result);
+ SimpleSlice(array, start_i, end_i - start_i, len, result);
}
result.length = end_i - start_i;
return ObservedArraySplice.apply(this, arguments);
var num_arguments = %_ArgumentsLength();
- var len = TO_UINT32(this.length);
+ var array = TO_OBJECT_INLINE(this);
+ var len = TO_UINT32(array.length);
var start_i = ComputeSpliceStartIndex(TO_INTEGER(start), len);
var del_count = ComputeSpliceDeleteCount(delete_count, num_arguments, len,
start_i);
deleted_elements.length = del_count;
var num_elements_to_add = num_arguments > 2 ? num_arguments - 2 : 0;
- if (del_count != num_elements_to_add && $Object.isSealed(this)) {
+ if (del_count != num_elements_to_add && ObjectIsSealed(array)) {
throw MakeTypeError("array_functions_change_sealed",
["Array.prototype.splice"]);
- } else if (del_count > 0 && $Object.isFrozen(this)) {
+ } else if (del_count > 0 && ObjectIsFrozen(array)) {
throw MakeTypeError("array_functions_on_frozen",
["Array.prototype.splice"]);
}
var use_simple_splice = true;
- if (IS_ARRAY(this) &&
+ if (IS_ARRAY(array) &&
num_elements_to_add !== del_count) {
// If we are only deleting/moving a few things near the end of the
// array then the simple version is going to be faster, because it
// doesn't touch most of the array.
- var estimated_non_hole_elements = %EstimateNumberOfElements(this);
+ var estimated_non_hole_elements = %EstimateNumberOfElements(array);
if (len > 20 && (estimated_non_hole_elements >> 2) < (len - start_i)) {
use_simple_splice = false;
}
}
if (use_simple_splice) {
- SimpleSlice(this, start_i, del_count, len, deleted_elements);
- SimpleMove(this, start_i, del_count, len, num_elements_to_add);
+ SimpleSlice(array, start_i, del_count, len, deleted_elements);
+ SimpleMove(array, start_i, del_count, len, num_elements_to_add);
} else {
- SmartSlice(this, start_i, del_count, len, deleted_elements);
- SmartMove(this, start_i, del_count, len, num_elements_to_add);
+ SmartSlice(array, start_i, del_count, len, deleted_elements);
+ SmartMove(array, start_i, del_count, len, num_elements_to_add);
}
// Insert the arguments into the resulting array in
var arguments_index = 2;
var arguments_length = %_ArgumentsLength();
while (arguments_index < arguments_length) {
- this[i++] = %_Arguments(arguments_index++);
+ array[i++] = %_Arguments(arguments_index++);
}
- this.length = len - del_count + num_elements_to_add;
+ array.length = len - del_count + num_elements_to_add;
// Return the deleted elements.
return deleted_elements;
var result = new $Array();
var accumulator = new InternalArray();
var accumulator_length = 0;
- if (%DebugCallbackSupportsStepping(f)) {
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(f);
- if (%_CallFunction(receiver, element, i, array, f)) {
- accumulator[accumulator_length++] = element;
- }
- }
- }
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- if (%_CallFunction(receiver, element, i, array, f)) {
- accumulator[accumulator_length++] = element;
- }
+ var stepping = %_DebugCallbackSupportsStepping(f);
+ for (var i = 0; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(f);
+ if (%_CallFunction(receiver, element, i, array, f)) {
+ accumulator[accumulator_length++] = element;
}
}
- // End of duplicate.
}
%MoveArrayContents(accumulator, result);
return result;
receiver = ToObject(receiver);
}
- if (%DebugCallbackSupportsStepping(f)) {
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(f);
- %_CallFunction(receiver, element, i, array, f);
- }
+ var stepping = %_DebugCallbackSupportsStepping(f);
+ for (var i = 0; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(f);
+ %_CallFunction(receiver, element, i, array, f);
}
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- %_CallFunction(receiver, element, i, array, f);
- }
- }
- // End of duplicate.
}
}
receiver = ToObject(receiver);
}
- if (%DebugCallbackSupportsStepping(f)) {
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(f);
- if (%_CallFunction(receiver, element, i, array, f)) return true;
- }
+ var stepping = %_DebugCallbackSupportsStepping(f);
+ for (var i = 0; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(f);
+ if (%_CallFunction(receiver, element, i, array, f)) return true;
}
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- if (%_CallFunction(receiver, element, i, array, f)) return true;
- }
- }
- // End of duplicate.
}
return false;
}
receiver = ToObject(receiver);
}
- if (%DebugCallbackSupportsStepping(f)) {
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(f);
- if (!%_CallFunction(receiver, element, i, array, f)) return false;
- }
- }
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- if (!%_CallFunction(receiver, element, i, array, f)) return false;
- }
+ var stepping = %_DebugCallbackSupportsStepping(f);
+ for (var i = 0; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(f);
+ if (!%_CallFunction(receiver, element, i, array, f)) return false;
}
- // End of duplicate.
}
return true;
}
var result = new $Array();
var accumulator = new InternalArray(length);
- if (%DebugCallbackSupportsStepping(f)) {
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(f);
- accumulator[i] = %_CallFunction(receiver, element, i, array, f);
- }
- }
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (var i = 0; i < length; i++) {
- if (i in array) {
- var element = array[i];
- accumulator[i] = %_CallFunction(receiver, element, i, array, f);
- }
+ var stepping = %_DebugCallbackSupportsStepping(f);
+ for (var i = 0; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(f);
+ accumulator[i] = %_CallFunction(receiver, element, i, array, f);
}
- // End of duplicate.
}
%MoveArrayContents(accumulator, result);
return result;
}
var receiver = %GetDefaultReceiver(callback);
-
- if (%DebugCallbackSupportsStepping(callback)) {
- for (; i < length; i++) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(callback);
- current =
- %_CallFunction(receiver, current, element, i, array, callback);
- }
+ var stepping = %_DebugCallbackSupportsStepping(callback);
+ for (; i < length; i++) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(callback);
+ current = %_CallFunction(receiver, current, element, i, array, callback);
}
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (; i < length; i++) {
- if (i in array) {
- var element = array[i];
- current =
- %_CallFunction(receiver, current, element, i, array, callback);
- }
- }
- // End of duplicate.
}
return current;
}
}
var receiver = %GetDefaultReceiver(callback);
-
- if (%DebugCallbackSupportsStepping(callback)) {
- for (; i >= 0; i--) {
- if (i in array) {
- var element = array[i];
- // Prepare break slots for debugger step in.
- %DebugPrepareStepInIfStepping(callback);
- current =
- %_CallFunction(receiver, current, element, i, array, callback);
- }
- }
- } else {
- // This is a duplicate of the previous loop sans debug stepping.
- for (; i >= 0; i--) {
- if (i in array) {
- var element = array[i];
- current =
- %_CallFunction(receiver, current, element, i, array, callback);
- }
+ var stepping = %_DebugCallbackSupportsStepping(callback);
+ for (; i >= 0; i--) {
+ if (i in array) {
+ var element = array[i];
+ // Prepare break slots for debugger step in.
+ if (stepping) %DebugPrepareStepInIfStepping(callback);
+ current = %_CallFunction(receiver, current, element, i, array, callback);
}
- // End of duplicate.
}
return current;
}
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