1/*
2 * Copyright (C) 2018 mce sys Ltd. 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <wtf/Function.h>
29#include <wtf/text/StringImpl.h>
30
31namespace WTF {
32
33class ExternalStringImpl;
34
35using ExternalStringImplFreeFunction = Function<void(ExternalStringImpl*, void*, unsigned)>;
36
37class ExternalStringImpl : public StringImpl {
38public:
39 WTF_EXPORT_PRIVATE static Ref<ExternalStringImpl> create(const LChar* characters, unsigned length, ExternalStringImplFreeFunction&&);
40 WTF_EXPORT_PRIVATE static Ref<ExternalStringImpl> create(const UChar* characters, unsigned length, ExternalStringImplFreeFunction&&);
41
42private:
43 friend class StringImpl;
44
45 ExternalStringImpl(const LChar* characters, unsigned length, ExternalStringImplFreeFunction&&);
46 ExternalStringImpl(const UChar* characters, unsigned length, ExternalStringImplFreeFunction&&);
47
48 ALWAYS_INLINE void freeExternalBuffer(void* buffer, unsigned bufferSize)
49 {
50 m_free(this, buffer, bufferSize);
51 }
52
53 ExternalStringImplFreeFunction m_free;
54};
55
56} // namespace WTF
57
58using WTF::ExternalStringImpl;
59