Function returnValue

src/script/v8/engine.cpp:332–387

};

static v8::Local<v8::Value> returnValue(v8::Isolate* isolate, const Value& value) {
    switch (value.type) {
    case Value::Type::UNDEFINED:
        return v8::Local<v8::Value>();

    case Value::Type::INT:
        return v8::Int32::New(isolate, value);

    case Value::Type::DOUBLE:
        return v8::Number::New(isolate, value);

    case Value::Type::STRING:
        return ToLocal(v8::String::NewFromUtf8(isolate, value));

    case Value::Type::OBJECT:
        if (auto object = static_cast<ScriptObject*>(value)) {
            return static_cast<V8ScriptObject*>(object->getInternalScriptObject())->makeLocal();
        }
        return {};

    case Value::Type::BUFFER: {
        auto& buffer = value.buffer();
        if (buffer.canSteal()) {
#if V8_MAJOR_VERSION > 7
            auto store = v8::ArrayBuffer::NewBackingStore(
                buffer.steal(),
                buffer.size(),
                +[](void* data, size_t length, void* deleter_data){
                    delete[] static_cast<uint8_t*>(data);
                },
                nullptr
                );
            auto arrayBuffer = v8::ArrayBuffer::New(isolate, std::move(store));
            return v8::Uint8Array::New(arrayBuffer, 0, buffer.size());
#else
            auto arrayBuffer = v8::ArrayBuffer::New(isolate, buffer.steal(), buffer.size());
#endif
            return v8::Uint8Array::New(arrayBuffer, 0, buffer.size());

        } else {
            auto arrayBuffer = v8::ArrayBuffer::New(isolate, buffer.size());
#if V8_MAJOR_VERSION > 7
            std::memcpy(arrayBuffer->GetBackingStore()->Data(), buffer.data(), buffer.size());
#else
            std::memcpy(arrayBuffer->GetContents().Data(), buffer.data(), buffer.size());
#endif
            return v8::Uint8Array::New(arrayBuffer, 0, buffer.size());
        }
    }

    default:
        printf("Unknown return type: %d\n", int(value.type));
        break;
    }
    return {};
}

static InternalScriptObject::Regular<V8ScriptObject> v8SO("V8ScriptObject");