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// Copyright 2018 The Cobalt Authors. 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