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/*
* Copyright (C) 2018 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 <JavaScriptCore/Allocator.h>
namespace JSC {
class JITAllocator {
public:
enum class Kind {
Constant,
Variable,
VariableNonNull,
};
using enum Kind;
JITAllocator() = default;
static JITAllocator constant(Allocator allocator)
{
JITAllocator result(Constant);
result.m_allocator = allocator;
return result;
}
static JITAllocator variable() { return JITAllocator(Variable); }
static JITAllocator variableNonNull() { return JITAllocator(VariableNonNull); }
friend bool operator==(const JITAllocator&, const JITAllocator&) = default;
explicit operator bool() const
{
return *this != JITAllocator();
}
Kind kind() const { return m_kind; }
bool isConstant() const { return m_kind == Constant; }
bool isVariable() const { return m_kind != Constant; }
Allocator allocator() const
{
RELEASE_ASSERT(isConstant());
return m_allocator;
}
private:
JITAllocator(Kind kind)
: m_kind(kind)
{ }
Kind m_kind { Constant };
Allocator m_allocator;
};
} // namespace JSC
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