2 * Copyright (C) 2013 Apple Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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26 #ifndef GenericTypedArrayView_h
27 #define GenericTypedArrayView_h
29 #include "ArrayBuffer.h"
30 #include "ArrayBufferView.h"
34 template<typename Adaptor>
35 class GenericTypedArrayView : public ArrayBufferView {
37 GenericTypedArrayView(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
40 static RefPtr<GenericTypedArrayView> create(unsigned length);
41 static RefPtr<GenericTypedArrayView> create(const typename Adaptor::Type* array, unsigned length);
42 static RefPtr<GenericTypedArrayView> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
44 static RefPtr<GenericTypedArrayView> createUninitialized(unsigned length);
46 typename Adaptor::Type* data() const { return static_cast<typename Adaptor::Type*>(baseAddress()); }
48 bool set(GenericTypedArrayView<Adaptor>* array, unsigned offset)
50 return setImpl(array, offset * sizeof(typename Adaptor::Type));
53 bool setRange(const typename Adaptor::Type* data, size_t dataLength, unsigned offset)
56 reinterpret_cast<const char*>(data),
57 dataLength * sizeof(typename Adaptor::Type),
58 offset * sizeof(typename Adaptor::Type));
61 bool zeroRange(unsigned offset, size_t length)
63 return zeroRangeImpl(offset * sizeof(typename Adaptor::Type), length * sizeof(typename Adaptor::Type));
66 void zeroFill() { zeroRange(0, length()); }
68 unsigned length() const
75 virtual unsigned byteLength() const override
77 return length() * sizeof(typename Adaptor::Type);
80 typename Adaptor::Type item(unsigned index) const
82 ASSERT_WITH_SECURITY_IMPLICATION(index < this->length());
86 void set(unsigned index, double value) const
88 ASSERT_WITH_SECURITY_IMPLICATION(index < this->length());
89 data()[index] = Adaptor::toNativeFromDouble(value);
92 bool checkInboundData(unsigned offset, unsigned pos) const
94 unsigned length = this->length();
95 return (offset <= length
96 && offset + pos <= length
98 && offset + pos >= offset);
101 RefPtr<GenericTypedArrayView> subarray(int start) const;
102 RefPtr<GenericTypedArrayView> subarray(int start, int end) const;
104 virtual TypedArrayType getType() const override
106 return Adaptor::typeValue;
109 virtual JSArrayBufferView* wrap(ExecState*, JSGlobalObject*) override;
117 #endif // GenericTypedArrayView_h