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author | Steve Block <steveblock@google.com> | 2011-05-13 06:44:40 -0700 |
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committer | Android (Google) Code Review <android-gerrit@google.com> | 2011-05-13 06:44:40 -0700 |
commit | 08014c20784f3db5df3a89b73cce46037b77eb59 (patch) | |
tree | 47749210d31e19e6e2f64036fa8fae2ad693476f /Source/JavaScriptCore/wtf/ByteArray.h | |
parent | 860220379e56aeb66424861ad602b07ee22b4055 (diff) | |
parent | 4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff) | |
download | external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.zip external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.gz external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.bz2 |
Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes:
Merge WebKit at r75315: Update WebKit version
Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs
Merge WebKit at r75315: Stub out AXObjectCache::remove()
Merge WebKit at r75315: Fix ImageBuffer
Merge WebKit at r75315: Fix PluginData::initPlugins()
Merge WebKit at r75315: Fix conflicts
Merge WebKit at r75315: Fix Makefiles
Merge WebKit at r75315: Move Android-specific WebCore files to Source
Merge WebKit at r75315: Initial merge by git.
Diffstat (limited to 'Source/JavaScriptCore/wtf/ByteArray.h')
-rw-r--r-- | Source/JavaScriptCore/wtf/ByteArray.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wtf/ByteArray.h b/Source/JavaScriptCore/wtf/ByteArray.h new file mode 100644 index 0000000..bdec630 --- /dev/null +++ b/Source/JavaScriptCore/wtf/ByteArray.h @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2009 Apple 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 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. + */ + +#ifndef ByteArray_h +#define ByteArray_h + +#include <limits.h> +#include <wtf/PassRefPtr.h> +#include <wtf/Platform.h> +#include <wtf/RefCounted.h> + +namespace WTF { + class ByteArray : public RefCountedBase { + public: + unsigned length() const { return m_size; } + + void set(unsigned index, double value) + { + if (index >= m_size) + return; + if (!(value > 0)) // Clamp NaN to 0 + value = 0; + else if (value > 255) + value = 255; + m_data[index] = static_cast<unsigned char>(value + 0.5); + } + + void set(unsigned index, unsigned char value) + { + if (index >= m_size) + return; + m_data[index] = value; + } + + bool get(unsigned index, unsigned char& result) const + { + if (index >= m_size) + return false; + result = m_data[index]; + return true; + } + + unsigned char get(unsigned index) const + { + ASSERT(index < m_size); + return m_data[index]; + } + + unsigned char* data() { return m_data; } + + void deref() + { + if (derefBase()) { + // We allocated with new unsigned char[] in create(), + // and then used placement new to construct the object. + this->~ByteArray(); + delete[] reinterpret_cast<unsigned char*>(this); + } + } + + static PassRefPtr<ByteArray> create(size_t size); + + private: + ByteArray(size_t size) + : m_size(size) + { + } + size_t m_size; +// MSVC can't handle correctly unsized array. +// warning C4200: nonstandard extension used : zero-sized array in struct/union +// Cannot generate copy-ctor or copy-assignment operator when UDT contains a zero-sized array +#if COMPILER(MSVC) + unsigned char m_data[INT_MAX]; +#else + unsigned char m_data[]; +#endif + }; +} // namespace WTF + +using WTF::ByteArray; + +#endif |