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declare transitions in constructor #4

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declare transitions in constructor #4

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20 changes: 20 additions & 0 deletions fsm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -237,6 +237,26 @@ class Fsm
{
}

template <typename InputIt>
Fsm(InputIt start, InputIt end) :
m_transitions(), m_cs(Initial), m_debug_fn(nullptr)
{
add_transitions(start, end);
}

template <typename Coll>
Fsm(Coll &&c) :
m_transitions(), m_cs(Initial), m_debug_fn(nullptr)
{
add_transitions(c);
}

Fsm(std::initializer_list<Trans>&& i) :
m_transitions(), m_cs(Initial), m_debug_fn(nullptr)
{
add_transitions(i);
}

/**
* Sets the current state to the given state. Defaults to the Initial state.
*
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41 changes: 41 additions & 0 deletions tests/fsm_test.cpp
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Expand Up @@ -244,6 +244,47 @@ TEST_CASE("Test single argument add_transitions function")
}
}

TEST_CASE("Test single argument constructors with transitions")
{
enum class States { Initial, A, Final };
using F = FSM::Fsm<States, States::Initial, char>;

SECTION("Test raw array")
{
F::Trans v[] = {
{States::Initial, States::A, 'a', nullptr, nullptr},
{States::A, States::Final, 'b', nullptr, nullptr},
};
F fsm(&v[0], &v[2]);
fsm.execute('a');
fsm.execute('b');
REQUIRE(fsm.state() == States::Final);
}

SECTION("Test vector")
{
std::vector<F::Trans> v = {
{States::Initial, States::A, 'a', nullptr, nullptr},
{States::A, States::Final, 'b', nullptr, nullptr},
};
F fsm(v);
fsm.execute('a');
fsm.execute('b');
REQUIRE(fsm.state() == States::Final);
}

SECTION("Test initializer list")
{
F fsm{
{States::Initial, States::A, 'a', nullptr, nullptr},
{States::A, States::Final, 'b', nullptr, nullptr},
};
fsm.execute('a');
fsm.execute('b');
REQUIRE(fsm.state() == States::Final);
}
}

TEST_CASE("Test int as type for states")
{
int INITIAL = 1;
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