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Spot
Spot
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f4070187
Commit
f4070187
authored
Apr 26, 2017
by
Alexandre DuretLutz
Browse files
* NEWS: Reword and reorder a few entries.
parent
540b9713
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NEWS
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f4070187
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@@ 2,43 +2,48 @@ New in spot 2.3.3.dev (not yet released)
Tools:
 In autfilt, the options sum(sumor) and sumand are
implemented.
 autfilt learned to build the union (sum) or the intersection
(sumand) of two language by putting two automata sidebyside
and fiddling with the initial states. This complement the already
implemented intersection (product) and union (productor),
both based on a product.

In
autfilt
, the option dualize is now available to obtain the dual
o
f any automaton
.
 autfilt
learned to complement any alternating automaton with
o
ption dualize
.
 Add a new binary: genaut. Similarly to genltl that produces LTL
formulas from the literature, this tool produces automata from
the literature. It currently features only one class of
automata.
 genaut is a binary to produce families of automata defined in the
literature (in the same way as we have genltl for LTL formulas).
It currently features only one class of automata.
Library:
 Add a new library libspotgen. It is intended to be place to gather
functions that generate classes of formulas and automata from the
literature. This separation should ease future development.
 A new library, libspotgen, gathers all functions used to generate
families of automata or LTL formulas, used by genltl and genaut.
 spot::sum() and spot::sum_and() implements the union and the
intersection of two automatons, respectively.
intersection of two automatons by putting them sidebyside and
using nondeterministim or universal branching on the initial
statae.
 twa objects have a new property: prop_complete(). This obviously
acts as a cache for the is_complete() function.
 spot::dualize() implements the dual of any alternating automaton.
 spot::dualize() completements any alternating automaton. Since
the dual of a deterministic automaton is still deterministic, the
function spot::dtwa_complement() has been deprecated and simply
calls spot::dualize().
 spot::dtwa_complement now simply returns the result of dualize()
 There is a new named property for automata called
"originalstates" that can be used to record the origin of a state
when an automaton is transformed. It is currently defined by the
degeneralization algorithms, and by transform_accessible() and
algorithms based on it (like remove_ap::strip(),
decompose_strength(), decompose_scc()). This is realy meant as an
aid for writing algorithms that need this mapping, but it can also
be used to debug these algorithms: the "originalstates"
information is displayed by the dot printer when the 'd' option is
passed. For instance in
 A new named property for automata called "originalstates" can be
used to record the origin of a state before transformation. It is
currently defined by the degeneralization algorithms, and by
transform_accessible() and algorithms based on it (like
remove_ap::strip(), decompose_strength(), decompose_scc()). This
is realy meant as an aid for writing algorithms that need this
mapping, but it can also be used to debug these algorithms: the
"originalstates" information is displayed by the dot printer when
the 'd' option is passed. For instance in
% ltl2tgba 'GF(a <> Fb)' dot=s
% ltl2tgba 'GF(a <> Fb)'  autfilt B dot=ds
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@@ 46,25 +51,17 @@ New in spot 2.3.3.dev (not yet released)
the second command outputs an automaton with states that show
references to the first one.
 spot::acc_cond::is_streett_like() returns whether an acceptance
condition is Streettlike, meaning it is a conjunction of
disjunctive clauses containing at most one Inf and at most one Fin.
It is more permissive than spot::acc_cond::is_streett(),
as the only requirement is that all the marks are present in the
acceptance condition.
In addition, the spot::acc_cond::streett_like_pairs() returns a
boolean that indicates if the acceptance condition is Streettlike
and takes a vector of the new struct spot::acc_cond::streett_pair,
which has members fin and inf, as an output parameter which
contains after the call to the function all the Streettlike pairs.
Likewise, spot::acc_cond::is_rabin_like() and
spot::acc_cond::rabin_like_pairs() are implemented for Rabinlike
pairs.
 The new function spot::acc_cond::is_streett_like() checks whether
an acceptance condition is conjunction of disjunctive clauses
containing at most one Inf and at most one Fin. It builds a
vector of pairs to use if we want to assume the automaton has
Streett acceptance. The dual function is
spot::acc_cond::is_rabin_like() works similarly.
Python:
 The 'spot.gen' package
is a wrapper around
the functions from
the libspotgen library
.
 The 'spot.gen' package
exports
the functions from
libspotgen.
See https://spot.lrde.epita.fr/ipynb/gen.html for examples
.
Bugs fixed:
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@@ 91,22 +88,19 @@ New in spot 2.3.3.dev (not yet released)
existing code unless you work with the recently added support for
alternating automata.
 The spot::twa::prop_deterministic() methods have been renamed to
spot::twa::prop_universal() for consistency with the above change.
We have kept spot::twa::prop_deterministic() as a deprecated
synonym for spot::twa::prop_universal() to help backward
compatibility.
 spot::acc_cond::mark_t::sets() now returns an internal iterable
object instead of an std::vector<unsigned>.
Deprecation notice:
 spot::dtwa_complement() used to work only on deterministic
automatons. Due to the recent implementation of spot::dualize(),
that does the same job but on any type of automaton,
spot::dtwa_complement() is now kept as a proxy of spot::dualize()
in order to help backward compatibility, but is now deprecated.
 spot::dtwa_complement() is deprecated. Prefer the more generic
spot::dualize() instead.
 The spot::twa::prop_deterministic() methods have been renamed to
spot::twa::prop_universal() for consistency with the change to
is_deterministic() listed above. We have kept
spot::twa::prop_deterministic() as a deprecated synonym for
spot::twa::prop_universal() to help backward compatibility.
New in spot 2.3.3 (20170411)
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