blob: e8cc31cf78aad993795fe4b6fcb132aa5714883c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/typed_arrays/dom_array_piece.h"
#include "third_party/blink/renderer/bindings/core/v8/array_buffer_or_array_buffer_view.h"
namespace blink {
DOMArrayPiece::DOMArrayPiece(
const ArrayBufferOrArrayBufferView& array_buffer_or_view) {
if (array_buffer_or_view.IsArrayBuffer()) {
DOMArrayBuffer* array_buffer = array_buffer_or_view.GetAsArrayBuffer();
InitWithArrayBuffer(array_buffer);
} else if (array_buffer_or_view.IsArrayBufferView()) {
DOMArrayBufferView* array_buffer_view =
array_buffer_or_view.GetAsArrayBufferView().Get();
InitWithArrayBufferView(array_buffer_view);
}
}
///////////////////////////////////////////////////////
DOMArrayPiece::DOMArrayPiece() {
InitNull();
}
DOMArrayPiece::DOMArrayPiece(DOMArrayBuffer* buffer) {
InitWithArrayBuffer(buffer);
}
DOMArrayPiece::DOMArrayPiece(DOMArrayBufferView* buffer) {
InitWithArrayBufferView(buffer);
}
bool DOMArrayPiece::IsNull() const {
return is_null_;
}
bool DOMArrayPiece::IsDetached() const {
return is_detached_;
}
void* DOMArrayPiece::Data() const {
DCHECK(!IsNull());
return data_;
}
unsigned char* DOMArrayPiece::Bytes() const {
return static_cast<unsigned char*>(Data());
}
size_t DOMArrayPiece::ByteLength() const {
DCHECK(!IsNull());
return byte_length_;
}
void DOMArrayPiece::InitWithArrayBuffer(DOMArrayBuffer* buffer) {
if (buffer) {
InitWithData(buffer->Data(), buffer->ByteLength());
is_detached_ = buffer->IsDetached();
} else {
InitNull();
}
}
void DOMArrayPiece::InitWithArrayBufferView(DOMArrayBufferView* buffer) {
if (buffer) {
InitWithData(buffer->BaseAddress(), buffer->byteLength());
is_detached_ = buffer->buffer() ? buffer->buffer()->IsDetached() : true;
} else {
InitNull();
}
}
void DOMArrayPiece::InitWithData(void* data, size_t byte_length) {
byte_length_ = byte_length;
data_ = data;
is_null_ = false;
is_detached_ = false;
}
void DOMArrayPiece::InitNull() {
byte_length_ = 0;
data_ = nullptr;
is_null_ = true;
is_detached_ = false;
}
} // namespace blink
|
