Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 108 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/Float64Array.h b/Source/JavaScriptCore/wtf/Float64Array.h
new file mode 100644
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+++ b/Source/JavaScriptCore/wtf/Float64Array.h
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+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2011 Google Inc. 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 COMPUTER, 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 COMPUTER, 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.
+ */
+
+#ifndef Float64Array_h
+#define Float64Array_h
+
+#include "TypedArrayBase.h"
+#include <wtf/MathExtras.h>
+
+namespace WTF {
+
+class Float64Array : public TypedArrayBase<double> {
+public:
+    static inline PassRefPtr<Float64Array> create(unsigned length);
+    static inline PassRefPtr<Float64Array> create(const double* array, unsigned length);
+    static inline PassRefPtr<Float64Array> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
+
+    // Can’t use "using" here due to a bug in the RVCT compiler.
+    bool set(TypedArrayBase<double>* array, unsigned offset) { return TypedArrayBase<double>::set(array, offset); }
+
+    void set(unsigned index, double value)
+    {
+        if (index >= TypedArrayBase<double>::m_length)
+            return;
+        TypedArrayBase<double>::data()[index] = static_cast<double>(value);
+    }
+
+    // Invoked by the indexed getter. Does not perform range checks; caller
+    // is responsible for doing so and returning undefined as necessary.
+    double item(unsigned index) const
+    {
+        ASSERT(index < TypedArrayBase<double>::m_length);
+        double result = TypedArrayBase<double>::data()[index];
+        return result;
+    }
+
+    inline PassRefPtr<Float64Array> subarray(int start) const;
+    inline PassRefPtr<Float64Array> subarray(int start, int end) const;
+
+private:
+    inline Float64Array(PassRefPtr<ArrayBuffer>,
+                 unsigned byteOffset,
+                 unsigned length);
+    // Make constructor visible to superclass.
+    friend class TypedArrayBase<double>;
+
+    // Overridden from ArrayBufferView.
+    virtual bool isDoubleArray() const { return true; }
+};
+
+PassRefPtr<Float64Array> Float64Array::create(unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(length);
+}
+
+PassRefPtr<Float64Array> Float64Array::create(const double* array, unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(array, length);
+}
+
+PassRefPtr<Float64Array> Float64Array::create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(buffer, byteOffset, length);
+}
+
+Float64Array::Float64Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
+    : TypedArrayBase<double>(buffer, byteOffset, length)
+{
+}
+
+PassRefPtr<Float64Array> Float64Array::subarray(int start) const
+{
+    return subarray(start, length());
+}
+
+PassRefPtr<Float64Array> Float64Array::subarray(int start, int end) const
+{
+    return subarrayImpl<Float64Array>(start, end);
+}
+
+} // namespace WTF
+
+using WTF::Float64Array;
+
+#endif // Float64Array_h