Purge PassRefPtr in JavaScriptCore - 2
[WebKit-https.git] / Source / JavaScriptCore / runtime / GenericTypedArrayViewInlines.h
1 /*
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25
26 #ifndef GenericTypedArrayViewInlines_h
27 #define GenericTypedArrayViewInlines_h
28
29 #include "GenericTypedArrayView.h"
30 #include "JSGlobalObject.h"
31
32 namespace JSC {
33
34 template<typename Adaptor>
35 GenericTypedArrayView<Adaptor>::GenericTypedArrayView(
36     PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
37     : ArrayBufferView(buffer, byteOffset)
38     , m_length(length)
39 {
40 }
41
42 template<typename Adaptor>
43 RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create(unsigned length)
44 {
45     RefPtr<ArrayBuffer> buffer = ArrayBuffer::create(length, sizeof(typename Adaptor::Type));
46     if (!buffer)
47         return nullptr;
48     return create(buffer.release(), 0, length);
49 }
50
51 template<typename Adaptor>
52 RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create(
53     const typename Adaptor::Type* array, unsigned length)
54 {
55     RefPtr<GenericTypedArrayView> result = create(length);
56     memcpy(result->data(), array, length * sizeof(typename Adaptor::Type));
57     return result;
58 }
59
60 template<typename Adaptor>
61 RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create(
62     PassRefPtr<ArrayBuffer> passedBuffer, unsigned byteOffset, unsigned length)
63 {
64     RefPtr<ArrayBuffer> buffer = passedBuffer;
65     if (!verifySubRangeLength(buffer, byteOffset, length, sizeof(typename Adaptor::Type))
66         || !verifyByteOffsetAlignment(byteOffset, sizeof(typename Adaptor::Type))) {
67         return nullptr;
68     }
69     
70     return adoptRef(new GenericTypedArrayView(buffer.release(), byteOffset, length));
71 }
72
73 template<typename Adaptor>
74 RefPtr<GenericTypedArrayView<Adaptor>>
75 GenericTypedArrayView<Adaptor>::createUninitialized(unsigned length)
76 {
77     RefPtr<ArrayBuffer> buffer =
78         ArrayBuffer::createUninitialized(length, sizeof(typename Adaptor::Type));
79     if (!buffer)
80         return nullptr;
81     return create(buffer.release(), 0, length);
82 }
83
84 template<typename Adaptor>
85 RefPtr<GenericTypedArrayView<Adaptor>>
86 GenericTypedArrayView<Adaptor>::subarray(int start) const
87 {
88     return subarray(start, length());
89 }
90
91 template<typename Adaptor>
92 RefPtr<GenericTypedArrayView<Adaptor>>
93 GenericTypedArrayView<Adaptor>::subarray(int start, int end) const
94 {
95     unsigned offset, length;
96     calculateOffsetAndLength(start, end, this->length(), &offset, &length);
97     clampOffsetAndNumElements<Adaptor::Type>(buffer(), byteOffset(), &offset, &length);
98     return create(buffer(), offset, length);
99 }
100
101 template<typename Adaptor>
102 JSArrayBufferView* GenericTypedArrayView<Adaptor>::wrap(
103     ExecState* exec, JSGlobalObject* globalObject)
104 {
105     return Adaptor::JSViewType::create(
106         exec->vm(), globalObject->typedArrayStructure(Adaptor::typeValue), this);
107 }
108
109 } // namespace JSC
110
111 #endif // GenericTypedArrayViewInlines_h
112