mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*
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* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <initializer_list>
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namespace JSC {
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// macro(name, isEnabledFlag)
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#define JSC_RUNTIME_FLAG(macro)
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class RuntimeFlags {
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private:
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enum RuntimeFlagShiftValue : unsigned {
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#define JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE(name, isEnabledFlag) shiftValueFor##name,
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JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE)
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#undef JSC_DECLARE_RUNTIME_FLAG_SHIFT_VALUE
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};
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public:
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enum RuntimeFlag : unsigned {
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#define JSC_DECLARE_RUNTIME_FLAG(name, isEnabledFlag) name = 1u << (shiftValueFor##name),
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JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG)
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#undef JSC_DECLARE_RUNTIME_FLAG
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};
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#define JSC_DECLARE_RUNTIME_FLAG_ACCESSOR(name, isEnabledFlag) \
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void set##name(bool value)\
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{\
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if (value)\
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m_flags |= name;\
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else\
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m_flags &= (~name);\
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}\
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bool is##name() const\
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{\
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return m_flags & name;\
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}
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JSC_RUNTIME_FLAG(JSC_DECLARE_RUNTIME_FLAG_ACCESSOR)
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#undef JSC_DECLARE_RUNTIME_FLAG_ACCESSOR
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RuntimeFlags()
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: RuntimeFlags(0u)
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{
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}
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RuntimeFlags(std::initializer_list<RuntimeFlag> initializerList)
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: RuntimeFlags()
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{
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for (RuntimeFlag flag : initializerList)
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m_flags |= flag;
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}
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explicit RuntimeFlags(unsigned flags)
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: m_flags(flags)
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{
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}
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static RuntimeFlags createAllEnabled()
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{
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return RuntimeFlags(
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#define JSC_USE_RUNTIME_FLAG(name, isEnabledFlag) ((isEnabledFlag) ? name : 0u) |
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JSC_RUNTIME_FLAG(JSC_USE_RUNTIME_FLAG)
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#undef JSC_USE_RUNTIME_FLAG
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0u
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);
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}
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RuntimeFlags isolatedCopy() const { return RuntimeFlags(m_flags); }
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private:
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unsigned m_flags;
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};
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} // namespace JSC
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