webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 81 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/builtins/GlobalOperations.js b/Source/JavaScriptCore/builtins/GlobalOperations.js
new file mode 100644
index 000000000..22220cf2e
--- /dev/null
+++ b/Source/JavaScriptCore/builtins/GlobalOperations.js
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2016 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
+
+@globalPrivate
+function toInteger(target)
+{
+    "use strict";
+
+    var numberValue = @Number(target);
+
+    // isNaN(numberValue)
+    if (numberValue !== numberValue)
+        return 0;
+    return @trunc(numberValue);
+}
+
+@globalPrivate
+function toLength(target)
+{
+    "use strict";
+
+    var length = @toInteger(target);
+    // originally Math.min(Math.max(length, 0), maxSafeInteger));
+    return length > 0 ? (length < @MAX_SAFE_INTEGER ? length : @MAX_SAFE_INTEGER) : 0;
+}
+
+@globalPrivate
+function isDictionary(object)
+{
+    "use strict";
+
+    return 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
+@globalPrivate
+function speciesGetter()
+{
+    return this;
+}
+
+@globalPrivate
+function speciesConstructor(obj, defaultConstructor)
+{
+    var constructor = obj.constructor;
+    if (constructor === @undefined)
+        return defaultConstructor;
+    if (!@isObject(constructor))
+        @throwTypeError("|this|.constructor is not an Object or undefined");
+    constructor = constructor.@speciesSymbol;
+    if (constructor == null)
+        return defaultConstructor;
+    if (@isConstructor(constructor))
+        return constructor;
+    @throwTypeError("|this|.constructor[Symbol.species] is not a constructor");
+}