28 lines
685 B
C++
28 lines
685 B
C++
#pragma once
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#include <fmt/core.h>
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#ifndef FSM_DEBUG
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#define FSM_STATE(C, S, E, ...) case C::S: S(E, ##__VA_ARGS__); break
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#else
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#define FSM_STATE(C, S, E, ...) case C::S: fmt::println(">> " #C " " #S " event={}, state={}", int(E), int(_state)); S(E, ##__VA_ARGS__); fmt::println("<< " #C " state={}", int(_state)); break
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#endif
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template<typename S, typename E>
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class DeadSimpleFSM {
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protected:
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// BUG: don't put this in your class because state() won't work
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S _state = S::START;
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public:
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template<typename... Types>
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void event(E event, Types... args);
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void state(S next_state) {
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_state = next_state;
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}
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bool in_state(S state) {
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return _state == state;
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}
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};
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