Source/JavaScriptCore/bytecode/StubInfoSummary.h

/*
 * 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

namespace JSC {

enum class StubInfoSummary : int8_t {
    NoInformation,
    Simple,
    MakesCalls,
    TakesSlowPath,
    TakesSlowPathAndMakesCalls
};

inline bool isInlineable(StubInfoSummary summary)
{
    switch (summary) {
    case StubInfoSummary::Simple:
    case StubInfoSummary::MakesCalls:
        return true;
    case StubInfoSummary::NoInformation:
    case StubInfoSummary::TakesSlowPath:
    case StubInfoSummary::TakesSlowPathAndMakesCalls:
        return false;
    }
    
    RELEASE_ASSERT_NOT_REACHED();
}

inline StubInfoSummary slowVersion(StubInfoSummary summary)
{
    switch (summary) {
    case StubInfoSummary::Simple:
    case StubInfoSummary::NoInformation:
    case StubInfoSummary::TakesSlowPath:
        return StubInfoSummary::TakesSlowPath;
    case StubInfoSummary::MakesCalls:
    case StubInfoSummary::TakesSlowPathAndMakesCalls:
        return StubInfoSummary::TakesSlowPathAndMakesCalls;
    }
    
    RELEASE_ASSERT_NOT_REACHED();
}

} // namespace JSC

namespace WTF {

class PrintStream;
void printInternal(PrintStream&, JSC::StubInfoSummary);

} // namespace WTF