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/*
* Copyright (C) 2025 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.
*/
#pragma once
#include <wtf/PrintStream.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace WTF {
template<typename T>
class StructDump {
public:
StructDump(const T& data)
: m_data(data)
{
}
void dump(PrintStream& out) const
{
#if COMPILER(CLANG)
__builtin_dump_struct(&m_data,
[&]<typename ...Args>(Args&& ...args) {
// While the format string is not a literal, this is a string
// generated by clang, and clang appropriately pass a format string
// to this function.
IGNORE_WARNINGS_BEGIN("format-nonliteral")
IGNORE_WARNINGS_BEGIN("format-security")
out.printf(std::forward<Args>(args)...);
IGNORE_WARNINGS_END
IGNORE_WARNINGS_END
});
#else
out.print(pointerDump(&m_data));
#endif
}
private:
const T& m_data;
};
template<typename T>
StructDump<T> structDump(const T& data)
{
return StructDump<T>(data);
}
} // namespace WTF
using WTF::structDump;
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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