1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <JavaScriptCore/JavaScript.h>
29#include <wtf/Optional.h>
30#include <wtf/RefCounted.h>
31
32namespace WTR {
33
34class JSWrappable : public RefCounted<JSWrappable> {
35public:
36 virtual ~JSWrappable() { }
37 virtual JSClassRef wrapperClass() = 0;
38};
39
40inline JSValueRef JSValueMakeBooleanOrNull(JSContextRef context, Optional<bool> value)
41{
42 return value ? JSValueMakeBoolean(context, value.value()) : JSValueMakeNull(context);
43}
44
45inline Optional<bool> JSValueToNullableBoolean(JSContextRef context, JSValueRef value)
46{
47 return JSValueIsUndefined(context, value) || JSValueIsNull(context, value) ? WTF::nullopt : Optional<bool>(JSValueToBoolean(context, value));
48}
49
50inline JSValueRef JSValueMakeStringOrNull(JSContextRef context, JSStringRef stringOrNull)
51{
52 return stringOrNull ? JSValueMakeString(context, stringOrNull) : JSValueMakeNull(context);
53}
54
55} // namespace WTR
56