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clean up comments and add some util functions

This commit is contained in:
Francisco Paisana 2020-03-31 13:00:51 +01:00 committed by Francisco Paisana
parent 7dc1489ea7
commit dc0427804f
2 changed files with 15 additions and 5 deletions
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19
lib/include/srslte/common/fsm.h
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@ -82,7 +82,7 @@ struct fsm_helper {
{
// do nothing
}
//! TargetState is type-erased. Apply its stored type to the fsm current state
//! TargetState is type-erased (a choice). Apply its stored type to the fsm current state
template <typename FSM, typename... Args, typename PrevState>
static void handle_state_change(FSM* f, choice_t<Args...>* s, PrevState* p)
{
@ -164,10 +164,11 @@ public:
virtual void exit() {}
};
//! CRTP Class for all non-nested FSMs
template <typename Derived>
class fsm_t : public state_t
{
public:
protected:
// get access to derived protected members from the base
class derived_view : public Derived
{
@ -175,6 +176,8 @@ public:
using Derived::react;
using Derived::states;
};
public:
static const bool is_nested = false;
// Push Events to FSM
@ -204,6 +207,13 @@ public:
return visitor.name;
}
//! Static method to check if State belongs to the list of possible states
template <typename State>
constexpr static bool can_hold_state()
{
return fsm_details::fsm_helper::get_fsm_state_list<fsm_t<Derived> >::template can_hold_type<State>();
}
protected:
friend struct fsm_details::fsm_helper;
@ -215,9 +225,8 @@ protected:
template <typename Derived, typename ParentFSM>
class nested_fsm_t : public fsm_t<Derived>
{
using base_t = fsm_t<Derived>;
using parent_t = ParentFSM;
using parent_view = typename parent_t::derived_view;
using base_t = fsm_t<Derived>;
using parent_t = ParentFSM;
public:
static const bool is_nested = true;

1
lib/test/common/fsm_test.cc
View File

@ -137,6 +137,7 @@ static_assert(std::is_same<fsm_helper::enable_if_fsm_state<fsm1, fsm1::idle_st>,
"get state list failed\n");
static_assert(std::is_same<fsm_helper::disable_if_fsm_state<fsm1, fsm1::fsm2::state_inner>, void>::value,
"get state list failed\n");
static_assert(fsm1::can_hold_state<fsm1::state1>(), "can hold state method failed\n");
} // namespace fsm_details
} // namespace srslte