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lib/FSM.pm  view on Meta::CPAN

=item I<$item>

Something that makes sense for user-code.
B<Acme::FSM> treats it as scalar with no internals
(mostly;
one exception is covered in L<B<diag()> method|/diag()> description).

=item I<$namespace>

B<A::F> uses elaborate schema to reach various callbacks
(three of them, at the time of writing).
This optional parameter is in use by this schema.
L<B<query()> method|/query()> has more.

=item I<$rule>

A scalar identifing a I<[turn]>.
One of opaque scalars returned by B<switch()> callback
(the other is processed (modified or not) I<$item>).
L<B<process()> method|/process()> description has more.

lib/FSM.pm  view on Meta::CPAN

nothing more
(however B<croaks> if that's not the case);
It may as well be empty;
Design legacy.

=item *

Returns C<HASH> for C<STOP> and C<BREAK> I<$state>s without any further
processing
(For those I<$state>s any I<$rule> is ignored and C<HASH> enables I<switch()>
callbacks to give more informative logs
(while that information is mangled anyway);
Probably bad idea).

=item *

C<undef> is returned if there's nothing to say --
neither I<tturn>, nor I<fturn>, nor turn map --
this record is kind of void.
The record should be studied to find out why.
B<carp>s in that case.

lib/FSM.pm  view on Meta::CPAN

Nothing at all.
Even error reporting is suppressed.

=item C<1>

Default.
Errors of here-be-dragons type.

=item C<2>

Basic diagnostics for callbacks.

=item C<3>

Basic trace.
Construction, starting and leaving runs.

=item C<4>

Extended diagnostics for callbacks.

=item C<5>

Deep trace.
By the way diagnostics of I<switch> entry resolving.

=back

=cut