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/*
* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
* Copyright (C) 2016 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. AND ITS CONTRIBUTORS ``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 ITS 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 <initializer_list>
namespace JSC {
// macro(name, isEnabledFlag)
#define JSC_RUNTIME_FLAG(macro)
class RuntimeFlags {
private:
enum RuntimeFlagShiftValue : unsigned {
#define JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE(name, isEnabledFlag) shiftValueFor##name,
JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE)
#undef JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE
};
public:
enum RuntimeFlag : unsigned {
#define JSC_DECLARE_RUNTIME_FLAG(name, isEnabledFlag) name = 1u << (shiftValueFor##name),
JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG)
#undef JSC_DECLARE_RUNTIME_FLAG
};
#define JSC_DECLARE_RUNTIME_FLAG_ACCESSOR(name, isEnabledFlag) \
void set##name(bool value)\
{\
if (value)\
m_flags |= name;\
else\
m_flags &= (~name);\
}\
bool is##name() const\
{\
return m_flags & name;\
}
JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG_ACCESSOR)
#undef JSC_DECLARE_RUNTIME_FLAG_ACCESSOR
RuntimeFlags()
: RuntimeFlags(0u)
{
}
RuntimeFlags(std::initializer_list<RuntimeFlag> initializerList)
: RuntimeFlags()
{
for (RuntimeFlag flag : initializerList)
m_flags |= flag;
}
explicit RuntimeFlags(unsigned flags)
: m_flags(flags)
{
}
static RuntimeFlags createAllEnabled()
{
return RuntimeFlags(
#define JSC_USE_RUNTIME_FLAG(name, isEnabledFlag) ((isEnabledFlag) ? name : 0u) |
JSC_RUNTIME_FLAG(JSC_USE_RUNTIME_FLAG)
#undef JSC_USE_RUNTIME_FLAG
0u
);
}
RuntimeFlags isolatedCopy() const { return RuntimeFlags(m_flags); }
private:
unsigned m_flags;
};
} // namespace JSC