fb5ff901d0
* src/tgba/bddprint.cc (bdd_format_set): Likewise. * src/tgba/state.hh: Add Doxygen comments. (state::compare): Take a state*, not a state&. (state_ptr_less_than): New functor. * src/tgba/statebdd.hh (state_bdd::compare): Take a state*, not a state&. * src/tgba/statebdd.cc (state_bdd::compare): Likewise. * src/tgba/succiter.hh: Add Doxygen comments. * src/tgba/tgba.hh: Mention promises. (tgba::formate_state): New pure virtual method. * src/tgba/tgbabddconcrete.hh (tgba_bdd_concrete::formate_state): New method. * src/tgba/tgbabddconcrete.cc (tgba_bdd_concrete::formate_state): Likewise. * src/tgbaalgos/dotty.cc: Adjust to use state_ptr_less_than and tgba::formate_state.
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
#ifndef SPOT_TGBA_SUCCITER_H
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# define SPOT_TGBA_SUCCITER_H
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#include "state.hh"
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namespace spot
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{
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/// \brief Iterate over the successors of a state.
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///
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/// This class provides the basic functionalities required to
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/// iterate over the successors of a state, as well as querying
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/// transition labels. Because transitions are never explicitely
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/// encoded, labels (conditions and promises) can only be queried
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/// while iterating over the successors.
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class tgba_succ_iterator
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{
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public:
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virtual
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~tgba_succ_iterator()
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{
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}
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/// \name Iteration
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//@{
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/// \brief Position the iterator on the first successor (if any).
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///
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/// This method can be called several times to make multiple
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/// passes over successors.
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///
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/// \warning One should always call \c done() to
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/// ensure there is a successor, even after \c first(). A
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/// common trap is to assume that there is at least one
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/// successor: this is wrong.
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virtual void first() = 0;
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/// \brief Jump to the next successor (if any).
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///
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/// \warning Again, one should always call \c done() to ensure
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/// there is a successor.
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virtual void next() = 0;
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/// \brief Check whether the iteration is finished.
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///
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/// This function should be called after any call to \c first()
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/// or \c next() and before any enquiry about the current state.
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///
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/// The usual way to do this is with a \c for loop.
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/// \code
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/// for (s->first(); !s->done(); s->next())
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/// ...
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/// \endcode
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virtual bool done() = 0;
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//@}
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/// \name Inspection
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//@{
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/// \brief Get the state of the current successor.
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///
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/// Note that the same state may occur at different points
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/// in the iteration. These actually correspond to the same
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/// destination. It just means there were several transitions,
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/// with different conditions or promises, leading to the
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/// same state.
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virtual state* current_state() = 0;
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/// \brief Get the condition on the transition leading to this successor.
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virtual bdd current_condition() = 0;
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/// \brief Get the promise on the transition leading to this successor.
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virtual bdd current_promise() = 0;
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//@}
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};
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}
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#endif // SPOT_TGBA_SUCCITER_H
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