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130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2019 Telegram Systems LLP
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*/
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#pragma once
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#include "td/actor/common.h"
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namespace td {
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namespace actor {
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template <class ActorType = core::Actor>
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class ActorId;
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template <class ActorType = core::Actor>
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class ActorOwn;
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template <class ActorType = core::Actor>
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class ActorShared;
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namespace core {
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template <class SelfT>
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ActorId<SelfT> actor_id(SelfT *self);
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}
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// Essentially ActorInfoWeakPtr with Type
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template <class ActorType>
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class ActorId {
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public:
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using ActorT = ActorType;
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ActorId() = default;
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ActorId(const ActorId &) = default;
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ActorId &operator=(const ActorId &) = default;
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ActorId(ActorId &&other) = default;
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ActorId &operator=(ActorId &&other) = default;
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// allow only conversion from child to parent
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template <class ToActorType, class = std::enable_if_t<std::is_base_of<ToActorType, ActorType>::value>>
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operator ActorId<ToActorType>() const {
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return ActorId<ToActorType>(ptr_);
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}
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template <class ToActorType, class FromActorType>
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friend ActorId<ToActorType> actor_dynamic_cast(ActorId<FromActorType> from);
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ActorType &get_actor_unsafe() const {
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return static_cast<ActorType &>(actor_info().actor());
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}
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bool empty() const {
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return !ptr_;
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}
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bool is_alive() const {
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return !empty() && actor_info().is_alive();
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}
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template <class... ArgsT>
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static ActorId<ActorType> create(ActorOptions &options, ArgsT &&... args) {
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return ActorId<ActorType>(detail::create_actor<ActorType>(options, std::forward<ArgsT>(args)...));
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}
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template <class OtherT>
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bool operator==(const ActorId<OtherT> &other) const {
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return ptr_ == other.ptr_;
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}
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detail::ActorRef as_actor_ref() const {
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CHECK(!empty());
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return detail::ActorRef(*actor_info_ptr());
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}
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const core::ActorInfoPtr &actor_info_ptr() const {
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return ptr_;
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}
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core::ActorInfo &actor_info() const {
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CHECK(ptr_);
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return *ptr_;
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}
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private:
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core::ActorInfoPtr ptr_;
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template <class OtherActorType>
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friend class ActorId;
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template <class OtherActorType>
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friend class ActorOwn;
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template <class OtherActorType>
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friend class ActorShared;
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explicit ActorId(core::ActorInfoPtr ptr) : ptr_(std::move(ptr)) {
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}
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template <class SelfT>
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friend ActorId<SelfT> core::actor_id(SelfT *self);
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};
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template <class ToActorType, class FromActorType>
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ActorId<ToActorType> actor_dynamic_cast(ActorId<FromActorType> from) {
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static_assert(
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std::is_base_of<FromActorType, ToActorType>::value || std::is_base_of<ToActorType, FromActorType>::value,
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"Invalid actor dynamic conversion");
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auto res = ActorId<ToActorType>(std::move(from.ptr_));
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CHECK(dynamic_cast<ToActorType *>(&res.actor_info().actor()) == &res.get_actor_unsafe());
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return res;
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}
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namespace core { // for ADL
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template <class SelfT>
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ActorId<SelfT> actor_id(SelfT *self) {
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CHECK(self);
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CHECK(static_cast<core::Actor *>(self) == &core::ActorExecuteContext::get()->actor());
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return ActorId<SelfT>(core::ActorExecuteContext::get()->actor().get_actor_info_ptr());
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}
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inline ActorId<> actor_id() {
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return actor_id(&core::ActorExecuteContext::get()->actor());
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}
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} // namespace core
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using core::actor_id;
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} // namespace actor
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} // namespace td
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