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Make it easy to filter states while iterating over an automaton.

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* src/tgbaalgos/reachiter.hh (tgba_reachable_iterator::want_state):
New method.
* src/tgbaalgos/reachiter.cc (tgba_reachable_iterator::want_state):
Implement it.
(tgba_reachable_iterator::run): Call want_state before processing
a state.
This commit is contained in:
Alexandre Duret-Lutz 2009-11-18 14:54:53 +01:00
parent 38148f87f8
commit ac5dda1032
3 changed files with 33 additions and 6 deletions
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6
src/tgbaalgos/reachiter.hh
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@ -1,4 +1,4 @@
// Copyright (C) 2003, 2004, 2008 Laboratoire d'Informatique de Paris 6
// Copyright (C) 2003, 2004, 2008, 2009 Laboratoire d'Informatique de Paris 6
// (LIP6), département Systèmes Répartis Coopératifs (SRC), Université
// Pierre et Marie Curie.
//
@ -56,6 +56,10 @@ namespace spot
virtual const state* next_state() = 0;
/// \}
/// Called by add_state or next_states implementations to filter
/// states. Default implementation always return true.
virtual bool want_state(const state* s) const;
/// Called by run() before starting its iteration.
virtual void start();
/// Called by run() once all states have been explored.