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Diffstat (limited to 'Source/JavaScriptCore/builtins/GlobalObject.js')
-rw-r--r-- | Source/JavaScriptCore/builtins/GlobalObject.js | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/builtins/GlobalObject.js b/Source/JavaScriptCore/builtins/GlobalObject.js new file mode 100644 index 000000000..db53c397b --- /dev/null +++ b/Source/JavaScriptCore/builtins/GlobalObject.js @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>. + * + * 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. + */ + +// @internal + +function toInteger(target) +{ + "use strict"; + + var numberValue = @Number(target); + + // isNaN(numberValue) + if (numberValue !== numberValue) + return 0; + + if (numberValue === 0 || !@isFinite(numberValue)) + return numberValue; + + return (numberValue > 0 ? 1 : -1) * @floor(@abs(numberValue)); +} + +function toLength(target) +{ + "use strict"; + + var maxSafeInteger = 0x1FFFFFFFFFFFFF; + var length = @toInteger(target); + // originally Math.min(Math.max(length, 0), maxSafeInteger)); + return length > 0 ? (length < maxSafeInteger ? length : maxSafeInteger) : 0; +} + +function isDictionary(object) +{ + "use strict"; + + return object === @undefined || object == null || typeof object === "object"; +} + +// FIXME: this needs to have it's name changed to "get [Symbol.species]". +// see: https://bugs.webkit.org/show_bug.cgi?id=151363 +function speciesGetter() +{ + return this; +} |