OLD | NEW |
---|---|
(Empty) | |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ArrayBytes_h | |
6 #define ArrayBytes_h | |
7 | |
8 #include "wtf/Forward.h" | |
9 #include "wtf/WTFExport.h" | |
10 | |
11 namespace WTF { | |
12 | |
13 // This class is for passing around un-owned bytes as a pointer + length. | |
14 // It supports implicit conversion from several other data types. | |
15 // | |
16 // ArrayBytes has the concept of being "null". This is different from an empty | |
17 // byte range. It is invalid to call methods other than isNull() on such | |
18 // instances. | |
19 // | |
20 // IMPORTANT: The data contained by ArrayBytes is NOT OWNED, so caution must be | |
21 // taken to ensure it is kept alive. | |
22 class WTF_EXPORT ArrayBytes { | |
abarth-chromium
2014/05/07 06:19:10
I guess we could call this an ArrayPiece after Str
eroman
2014/05/07 21:34:57
Sounds good, will make the change.
| |
23 public: | |
24 // Constructs a "null" ArrayBytes object. | |
25 ArrayBytes(); | |
26 | |
27 ArrayBytes(void* data, unsigned byteLength); | |
28 | |
29 // Constructs an ArrayBytes from the given ArrayBuffer. If the input is a | |
30 // nullptr, then the constructed instance will be isNull(). | |
31 ArrayBytes(ArrayBuffer*); | |
32 ArrayBytes(ArrayBufferView*); | |
33 | |
34 bool isNull() const; | |
35 void* data() const; | |
36 unsigned char* bytes() const; | |
37 unsigned byteLength() const; | |
38 | |
39 private: | |
40 void initWithData(void* data, unsigned byteLength); | |
41 void initNull(); | |
42 | |
43 void* m_data; | |
44 unsigned m_byteLength; | |
45 bool m_isNull; | |
abarth-chromium
2014/05/07 06:19:10
We can't use m_data == 0 as the m_isNull bit?
eroman
2014/05/07 21:34:57
I want to be able to distinguish between a zero-le
| |
46 }; | |
47 | |
48 } // namespace WTF | |
49 | |
50 using WTF::ArrayBytes; | |
51 | |
52 #endif // ArrayBytes_h | |
OLD | NEW |