| // 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/mozjs-45/mozjs_typed_arrays.h" |
| |
| #include "cobalt/base/polymorphic_downcast.h" |
| |
| namespace cobalt { |
| namespace script { |
| |
| namespace { |
| |
| template <typename T> |
| struct InterfaceToMozjs; |
| |
| #define COBALT_SCRIPT_DEFINE_INTERFACE_TO_MOZJS(array, ctype) \ |
| template <> \ |
| struct InterfaceToMozjs<array> { \ |
| using Result = mozjs::Mozjs##array; \ |
| static constexpr auto JS_NewArrayWithBuffer = &JS_New##array##WithBuffer; \ |
| }; |
| COBALT_SCRIPT_TYPED_ARRAY_LIST(COBALT_SCRIPT_DEFINE_INTERFACE_TO_MOZJS) |
| #undef COBALT_SCRIPT_DEFINE_INTERFACE_TO_MOZJS |
| |
| } // 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 MozjsTypedArrayImplType = |
| typename InterfaceToMozjs<TypedArrayImplType>::Result; |
| static constexpr auto JS_NewArrayWithBuffer = |
| InterfaceToMozjs<TypedArrayImplType>::JS_NewArrayWithBuffer; |
| |
| auto* mozjs_global_environment = |
| base::polymorphic_downcast<mozjs::MozjsGlobalEnvironment*>( |
| global_environment); |
| JSContext* context = mozjs_global_environment->context(); |
| JS::RootedObject global_object(context, |
| mozjs_global_environment->global_object()); |
| JSAutoRequest auto_request(context); |
| JSAutoCompartment auto_compartment(context, global_object); |
| |
| const auto* mozjs_array_buffer = base::polymorphic_downcast< |
| const mozjs::MozjsUserObjectHolder<mozjs::MozjsArrayBuffer>*>( |
| array_buffer.GetScriptValue()); |
| DCHECK(mozjs_array_buffer->js_value().isObject()); |
| JS::RootedObject rooted_array_buffer(context, |
| mozjs_array_buffer->js_object()); |
| JS::RootedValue typed_array(context); |
| typed_array.setObjectOrNull( |
| JS_NewArrayWithBuffer(context, rooted_array_buffer, byte_offset, length)); |
| DCHECK(typed_array.isObject()); |
| return Handle<TypedArrayImplType>( |
| new mozjs::MozjsUserObjectHolder<MozjsTypedArrayImplType>(context, |
| 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 |