Tools/TestRunnerShared/Bindings/JSWrappable.h

/*
 * Copyright (C) 2010 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
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 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``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 ITS CONTRIBUTORS
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 */

#pragma once

#include <JavaScriptCore/JavaScript.h>
#include <wtf/Optional.h>
#include <wtf/RefCounted.h>

namespace WTR {

class JSWrappable : public RefCounted<JSWrappable> {
public:
    virtual ~JSWrappable() { }
    virtual JSClassRef wrapperClass() = 0;
};

inline JSValueRef JSValueMakeBooleanOrNull(JSContextRef context, Optional<bool> value)
{
    return value ? JSValueMakeBoolean(context, value.value()) : JSValueMakeNull(context);
}

inline Optional<bool> JSValueToNullableBoolean(JSContextRef context, JSValueRef value)
{
    return JSValueIsUndefined(context, value) || JSValueIsNull(context, value) ? WTF::nullopt : Optional<bool>(JSValueToBoolean(context, value));
}

inline JSValueRef JSValueMakeStringOrNull(JSContextRef context, JSStringRef stringOrNull)
{
    return stringOrNull ? JSValueMakeString(context, stringOrNull) : JSValueMakeNull(context);
}

} // namespace WTR