src/third_party/WebKit/Source/core/dom/DOMTypedArray.cpp

   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 #include "config.h"
   6 #include "core/dom/DOMTypedArray.h"
   7
   8 #include "bindings/core/v8/DOMDataStore.h"
   9 #include "bindings/core/v8/V8ArrayBuffer.h"
  10 #include "bindings/core/v8/V8DOMWrapper.h"
  11
  12 namespace blink {
  13
  14 template<typename WTFTypedArray, typename V8TypedArray>
  15 v8::Handle<v8::Object> DOMTypedArray<WTFTypedArray, V8TypedArray>::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
  16 {
  17     // It's possible that no one except for the new wrapper owns this object at
  18     // this moment, so we have to prevent GC to collect this object until the
  19     // object gets associated with the wrapper.
  20     RefPtr<ThisType> protect(this);
  21
  22     ASSERT(!DOMDataStore::containsWrapper(this, isolate));
  23
  24     const WrapperTypeInfo* wrapperTypeInfo = this->wrapperTypeInfo();
  25     RefPtr<DOMArrayBuffer> buffer = this->buffer();
  26     v8::Local<v8::Value> v8Buffer = toV8(buffer.get(), creationContext, isolate);
  27     ASSERT(v8Buffer->IsArrayBuffer());
  28
  29     v8::Handle<v8::Object> wrapper = V8TypedArray::New(v8Buffer.As<v8::ArrayBuffer>(), byteOffset(), length());
  30
  31     return associateWithWrapper(wrapperTypeInfo, wrapper, isolate);
  32 }
  33
  34 template<typename WTFTypedArray, typename V8TypedArray>
  35 v8::Handle<v8::Object> DOMTypedArray<WTFTypedArray, V8TypedArray>::associateWithWrapper(const WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate)
  36 {
  37     return V8DOMWrapper::associateObjectWithWrapper(isolate, this, wrapperTypeInfo, wrapper);
  38 }
  39
  40 // Instantiation of the non-inline functions of the template classes.
  41 #define INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Type) \
  42     INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS_IMPL(WTF::Type##Array, v8::Type##Array)
  43 #define INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS_IMPL(WTFTypedArray, V8TypedArray) \
  44 template v8::Handle<v8::Object> DOMTypedArray<WTFTypedArray, V8TypedArray>::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate*); \
  45 template v8::Handle<v8::Object> DOMTypedArray<WTFTypedArray, V8TypedArray>::associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*)
  46
  47 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Int8);
  48 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Int16);
  49 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Int32);
  50 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Uint8);
  51 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Uint8Clamped);
  52 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Uint16);
  53 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Uint32);
  54 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Float32);
  55 INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS(Float64);
  56
  57 #undef INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS
  58 #undef INSTANTIATE_DOMTYPEDARRAY_MEMBER_FUNCTIONS_IMPL
  59
  60 } // namespace blink