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* src/tgbaalgos/emptiness.hh,

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src/tgbaalgos/emptiness.cc (emptiness_check::safe): New method.
* src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh,
src/tgbaalgos/se05.hh, src/tgbaalgos/se05.cc: Implement it.
* src/tgbatest/randtgba.cc: Simplify.
This commit is contained in:
Alexandre Duret-Lutz 2005-02-17 16:48:35 +00:00
parent c1d0cab3af
commit 435b03c2b2
6 changed files with 115 additions and 69 deletions
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48
src/tgbaalgos/emptiness.hh
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@ -114,29 +114,18 @@ namespace spot
return o_;
}
/// Modify the options parametrizing how the accepting run is computed.
const char*
parse_options(char* options)
{
option_map old(o_);
const char* s = o_.parse_options(options);
options_updated(old);
return s;
}
/// Modify the algorithm options.
const char* parse_options(char* options);
/// Return statistics, if available.
virtual const unsigned_statistics* statistics() const;
protected:
/// React when options are modified.
virtual void
options_updated(const option_map& old)
{
(void)old;
}
/// Notify option updates.
virtual void options_updated(const option_map& old);
const tgba* a_; ///< The automaton.
option_map o_; ///< The options
option_map o_; ///< The options.
};
/// Common interface to emptiness check algorithms.
@ -163,19 +152,15 @@ namespace spot
return o_;
}
/// Modify the options parametrizing how the accepting run is realized.
const char*
parse_options(char* options)
{
option_map old(o_);
const char* s = o_.parse_options(options);
options_updated(old);
return s;
}
/// Modify the algorithm options.
const char* parse_options(char* options);
/// Return false iff accepting_run() can return 0 for non-empty automata.
virtual bool safe() const;
/// \brief Check whether the automaton contain an accepting run.
///
/// Return 0 if the automaton accept no run. Return an instance
/// Return 0 if the automaton accepts no run. Return an instance
/// of emptiness_check_result otherwise. This instance might
/// allow to obtain one sample acceptance run. The result has to
/// be destroyed before the emptiness_check instance that
@ -183,6 +168,10 @@ namespace spot
///
/// Some emptiness_check algorithms may allow check() to be called
/// several time, but generally you should not assume that.
///
/// Some emptiness_check algorithms, especially those using bit state
/// hashing may return 0 even if the automaton is not empty.
/// \see safe()
virtual emptiness_check_result* check() = 0;
/// Return statistics, if available.
@ -191,11 +180,8 @@ namespace spot
/// Print statistics, if any.
virtual std::ostream& print_stats(std::ostream& os) const;
/// React when options are modified.
virtual void options_updated(const option_map& old)
{
(void)old;
}
/// Notify option updates.
virtual void options_updated(const option_map& old);
protected:
const tgba* a_; ///< The automaton.