darling-JavaScriptCore/runtime/ECMAMode.h

59 lines
2.1 KiB
C++

/*
* Copyright (C) 2020 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
namespace WTF {
class PrintStream;
};
namespace JSC {
struct ECMAMode {
static constexpr uint8_t StrictMode = 0;
static constexpr uint8_t SloppyMode = 1;
public:
static constexpr ECMAMode fromByte(uint8_t byte) { return ECMAMode(byte); }
static constexpr ECMAMode strict() { return ECMAMode(StrictMode); }
static constexpr ECMAMode sloppy() { return ECMAMode(SloppyMode); }
ALWAYS_INLINE bool isStrict() const { return m_value == StrictMode; }
ALWAYS_INLINE uint8_t value() const { return m_value; }
void dump(WTF::PrintStream&) const;
private:
constexpr ECMAMode(uint8_t value)
: m_value(value)
{
ASSERT(m_value == StrictMode || m_value == SloppyMode, m_value);
}
uint8_t m_value;
};
} // namespace JSC