1/*
2 * Copyright (C) 2014 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#ifndef EditingRange_h
27#define EditingRange_h
28
29#include "ArgumentCoders.h"
30#include <wtf/Vector.h>
31
32namespace WebKit {
33
34struct EditingRange {
35    EditingRange()
36        : location(notFound)
37        , length(0)
38    {
39    }
40
41    EditingRange(uint64_t location, uint64_t length)
42        : location(location)
43        , length(length)
44    {
45    }
46
47    // (notFound, 0) is notably valid.
48    bool isValid() const { return location + length >= location; }
49
50#if defined(__OBJC__)
51    EditingRange(NSRange range)
52    {
53        if (range.location != NSNotFound) {
54            location = range.location;
55            length = range.length;
56        } else {
57            location = notFound;
58            length = 0;
59        }
60    }
61
62    operator NSRange() const
63    {
64        if (location == notFound)
65            return NSMakeRange(NSNotFound, 0);
66        return NSMakeRange(location, length);
67    }
68#endif
69
70    uint64_t location;
71    uint64_t length;
72};
73
74}
75
76namespace IPC {
77template<> struct ArgumentCoder<WebKit::EditingRange> : SimpleArgumentCoder<WebKit::EditingRange> { };
78}
79
80#endif // EditingRange_h
81