| // Copyright 2018 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/script/v8c/v8c_typed_arrays.h" |
| |
| #include "cobalt/base/polymorphic_downcast.h" |
| |
| namespace cobalt { |
| namespace script { |
| |
| namespace { |
| |
| template <typename T> |
| struct InterfaceToV8c; |
| |
| #define COBALT_SCRIPT_DEFINE_INTERFACE_TO_V8C(array, ctype) \ |
| template <> \ |
| struct InterfaceToV8c<array> { \ |
| using Result = v8c::V8c##array; \ |
| using V8Type = v8::array; \ |
| }; |
| COBALT_SCRIPT_TYPED_ARRAY_LIST(COBALT_SCRIPT_DEFINE_INTERFACE_TO_V8C) |
| #undef COBALT_SCRIPT_DEFINE_INTERFACE_TO_V8C |
| |
| } // namespace |
| |
| // static |
| template <typename CType, bool IsClamped> |
| Handle<TypedArrayImpl<CType, IsClamped>> TypedArrayImpl<CType, IsClamped>::New( |
| GlobalEnvironment* global_environment, Handle<ArrayBuffer> array_buffer, |
| size_t byte_offset, size_t length) { |
| using TypedArrayImplType = TypedArrayImpl<CType, IsClamped>; |
| using V8cTypedArrayImplType = |
| typename InterfaceToV8c<TypedArrayImplType>::Result; |
| using V8Type = typename InterfaceToV8c<TypedArrayImplType>::V8Type; |
| |
| auto* v8c_global_environment = |
| base::polymorphic_downcast<v8c::V8cGlobalEnvironment*>( |
| global_environment); |
| v8::Isolate* isolate = v8c_global_environment->isolate(); |
| v8c::EntryScope entry_scope(isolate); |
| const auto* v8c_array_buffer = base::polymorphic_downcast< |
| const v8c::V8cUserObjectHolder<v8c::V8cArrayBuffer>*>( |
| array_buffer.GetScriptValue()); |
| v8::Local<v8::ArrayBuffer> array_buffer_value = |
| v8c_array_buffer->v8_value().As<v8::ArrayBuffer>(); |
| v8::Local<V8Type> typed_array = |
| V8Type::New(array_buffer_value, byte_offset, length); |
| return Handle<TypedArrayImplType>( |
| new v8c::V8cUserObjectHolder<V8cTypedArrayImplType>(isolate, |
| typed_array)); |
| } |
| |
| #define COBALT_SCRIPT_INSTANTIATE(array, ctype) \ |
| template Handle<array> array::New(GlobalEnvironment* global_environment, \ |
| Handle<ArrayBuffer> array_buffer, \ |
| size_t byte_offset, size_t length); |
| COBALT_SCRIPT_TYPED_ARRAY_LIST(COBALT_SCRIPT_INSTANTIATE) |
| #undef COBALT_SCRIPT_INSTANTIATE |
| |
| } // namespace script |
| } // namespace cobalt |