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Diffstat (limited to 'Source/JavaScriptCore/builtins/ObjectConstructor.js')
-rw-r--r-- | Source/JavaScriptCore/builtins/ObjectConstructor.js | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/builtins/ObjectConstructor.js b/Source/JavaScriptCore/builtins/ObjectConstructor.js new file mode 100644 index 000000000..6b7ac1996 --- /dev/null +++ b/Source/JavaScriptCore/builtins/ObjectConstructor.js @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2015 Jordan Harband. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. + */ + +function assign(target/*[*/, /*...*/sources/*] */) { + "use strict"; + + if (target == null) + throw new @TypeError("can't convert " + target + " to object"); + + var objTarget = @Object(target); + for (var s = 1, argumentsLength = arguments.length; s < argumentsLength; ++s) { + var nextSource = arguments[s]; + if (nextSource != null) { + var from = @Object(nextSource); + var keys = @ownEnumerablePropertyKeys(from); + for (var i = 0, keysLength = keys.length; i < keysLength; ++i) { + var nextKey = keys[i]; + objTarget[nextKey] = from[nextKey]; + } + } + } + return objTarget; +} |