Source/JavaScriptCore/runtime/ECMAMode.h

/*
 * Copyright (C) 2020 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    documentation and/or other materials provided with the distribution.
 *
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#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 fromBool(bool isStrict) { return isStrict ? strict() : sloppy(); }
    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