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revamp the formula hierarchy (montro-patch)

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Flatten the formula ltl::formula hiearchy into a single ltl::vnode that
has an enumerator to distinguish the types of node, and a common
interface to access children, update reference counts, etc.  The
ltl::formula class is now a thin wrapper around an ltl::vnode pointer to
keep track of reference counts automatically.  Visitor are not used
anymore; we now have map() and traversor() methods that are more
concise.

This basically fixes #43, but should be followed by some fine tuning
that should now be localized to the formula.hh and formula.cc files.

Some statistics about this patch.  I started working on it on Sep 9, had
a first compiling version two weeks later on Sep 22, and it then took 5
days to fixes the ~70 distincts bugs that were introduced during the
conversion.  About 13200 lines were modified, and one third of those
were removed.

* src/ltlast/formula.cc, src/ltlast/formula.hh: Complete rewrite,
including what was in separate nearby files.
* src/ltlast/allnodes.hh, src/ltlast/atomic_prop.cc,
src/ltlast/atomic_prop.hh, src/ltlast/binop.cc, src/ltlast/binop.hh,
src/ltlast/bunop.cc, src/ltlast/bunop.hh, src/ltlast/constant.cc,
src/ltlast/constant.hh, src/ltlast/multop.cc, src/ltlast/multop.hh,
src/ltlast/unop.cc, src/ltlast/unop.hh, src/ltlvisit/dump.cc,
src/ltlvisit/dump.hh, src/ltlast/predecl.hh: Delete these files.  Their
feature have been merged in formula.hh and formula.cc.
* src/ltlast/visitor.hh, src/ltlvisit/clone.cc, src/ltlvisit/clone.hh,
src/ltlvisit/dump.hh, src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh:
Delete these files, as we do not use visitors anymore.
* bench/stutter/stutter_invariance_formulas.cc,
bench/stutter/stutter_invariance_randomgraph.cc, doc/org/tut01.org,
doc/org/tut02.org, doc/org/tut10.org, doc/org/tut22.org,
iface/ltsmin/ltsmin.cc, iface/ltsmin/ltsmin.hh,
iface/ltsmin/modelcheck.cc, src/bin/autfilt.cc,
src/bin/common_aoutput.cc, src/bin/common_aoutput.hh,
src/bin/common_finput.cc, src/bin/common_finput.hh,
src/bin/common_output.cc, src/bin/common_output.hh,
src/bin/common_trans.cc, src/bin/common_trans.hh, src/bin/dstar2tgba.cc,
src/bin/genltl.cc, src/bin/ltl2tgba.cc, src/bin/ltl2tgta.cc,
src/bin/ltlcross.cc, src/bin/ltldo.cc, src/bin/ltlfilt.cc,
src/bin/ltlgrind.cc, src/bin/randaut.cc, src/bin/randltl.cc,
src/kripke/kripkeexplicit.cc, src/kripke/kripkeexplicit.hh,
src/kripkeparse/kripkeparse.yy, src/ltlast/Makefile.am,
src/ltlenv/declenv.cc, src/ltlenv/declenv.hh, src/ltlenv/defaultenv.cc,
src/ltlenv/defaultenv.hh, src/ltlenv/environment.hh,
src/ltlparse/ltlparse.yy, src/ltlparse/public.hh,
src/ltlvisit/Makefile.am, src/ltlvisit/apcollect.cc,
src/ltlvisit/apcollect.hh, src/ltlvisit/contain.cc,
src/ltlvisit/contain.hh, src/ltlvisit/dot.cc, src/ltlvisit/dot.hh,
src/ltlvisit/exclusive.cc, src/ltlvisit/exclusive.hh,
src/ltlvisit/length.cc, src/ltlvisit/length.hh, src/ltlvisit/mark.cc,
src/ltlvisit/mark.hh, src/ltlvisit/mutation.cc,
src/ltlvisit/mutation.hh, src/ltlvisit/nenoform.cc,
src/ltlvisit/nenoform.hh, src/ltlvisit/print.cc, src/ltlvisit/print.hh,
src/ltlvisit/randomltl.cc, src/ltlvisit/randomltl.hh,
src/ltlvisit/relabel.cc, src/ltlvisit/relabel.hh,
src/ltlvisit/remove_x.cc, src/ltlvisit/remove_x.hh,
src/ltlvisit/simpfg.cc, src/ltlvisit/simpfg.hh,
src/ltlvisit/simplify.cc, src/ltlvisit/simplify.hh, src/ltlvisit/snf.cc,
src/ltlvisit/snf.hh, src/ltlvisit/unabbrev.cc, src/ltlvisit/unabbrev.hh,
src/parseaut/parseaut.yy, src/ta/taexplicit.cc, src/ta/tgtaexplicit.cc,
src/taalgos/minimize.cc, src/taalgos/tgba2ta.cc, src/tests/bare.test,
src/tests/checkpsl.cc, src/tests/checkta.cc,
src/tests/complementation.cc, src/tests/consterm.cc,
src/tests/emptchk.cc, src/tests/equalsf.cc, src/tests/ikwiad.cc,
src/tests/isop.test, src/tests/kind.cc, src/tests/length.cc,
src/tests/ltldo.test, src/tests/ltlfilt.test, src/tests/ltlgrind.test,
src/tests/ltlprod.cc, src/tests/ltlrel.cc,
src/tests/parse_print_test.cc, src/tests/parseaut.test,
src/tests/parseerr.test, src/tests/randtgba.cc, src/tests/readltl.cc,
src/tests/reduc.cc, src/tests/syntimpl.cc, src/tests/taatgba.cc,
src/tests/tostring.cc, src/tests/twagraph.cc, src/tests/utf8.test,
src/twa/acc.cc, src/twa/bdddict.cc, src/twa/bdddict.hh,
src/twa/bddprint.cc, src/twa/formula2bdd.cc, src/twa/formula2bdd.hh,
src/twa/taatgba.cc, src/twa/taatgba.hh, src/twa/twa.cc, src/twa/twa.hh
src/twa/twagraph.cc, src/twa/twagraph.hh, src/twa/twasafracomplement.cc,
src/twaalgos/compsusp.cc, src/twaalgos/compsusp.hh,
src/twaalgos/dtgbasat.cc, src/twaalgos/hoa.cc, src/twaalgos/lbtt.cc,
src/twaalgos/ltl2taa.cc, src/twaalgos/ltl2taa.hh,
src/twaalgos/ltl2tgba_fm.cc, src/twaalgos/ltl2tgba_fm.hh,
src/twaalgos/minimize.cc, src/twaalgos/minimize.hh,
src/twaalgos/neverclaim.cc, src/twaalgos/postproc.cc,
src/twaalgos/postproc.hh, src/twaalgos/powerset.cc,
src/twaalgos/powerset.hh, src/twaalgos/randomgraph.cc,
src/twaalgos/remprop.cc, src/twaalgos/remprop.hh, src/twaalgos/stats.cc,
src/twaalgos/stats.hh, src/twaalgos/stutter.cc, src/twaalgos/stutter.hh,
src/twaalgos/translate.cc, src/twaalgos/translate.hh,
wrap/python/ajax/spotcgi.in, wrap/python/spot.py,
wrap/python/spot_impl.i, wrap/python/Makefile.am,
wrap/python/tests/automata-io.ipynb, wrap/python/tests/formulas.ipynb,
wrap/python/tests/ltl2tgba.py, wrap/python/tests/ltlparse.py,
wrap/python/tests/ltlsimple.py, wrap/python/tests/randltl.ipynb: Adjust
to use the new interface.
* src/sanity/style.test: Accept more C++11 patterns.
* NEWS: Mention the change.
This commit is contained in:
Alexandre Duret-Lutz 2015-09-24 19:44:00 +02:00
parent 1628b188fe
commit b77f7e24c3
177 changed files with 8295 additions and 13332 deletions
Download patch file Download diff file Expand all files Collapse all files

219
src/ltlvisit/snf.cc
View file

@ -18,8 +18,6 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "snf.hh"
#include "ltlast/allnodes.hh"
#include "ltlast/visitor.hh"
namespace spot
{
@ -27,82 +25,51 @@ namespace spot
{
namespace
{
// E°
class snf_visitor: public visitor
// E° if bounded=false
// E^□ if nounded=true
template<bool bounded>
class snf_visitor
{
protected:
const formula* result_;
formula result_;
snf_cache* cache_;
public:
snf_visitor(snf_cache* c): cache_(c)
snf_visitor(snf_cache* c)
: cache_(c)
{
}
const formula*
result() const
formula visit(formula f)
{
return result_;
}
if (!f.accepts_eword())
return f;
void
visit(const atomic_prop*)
{
SPOT_UNIMPLEMENTED();
}
snf_cache::const_iterator i = cache_->find(f);
if (i != cache_->end())
return i->second;
void
visit(const constant* c)
{
assert(c == constant::empty_word_instance());
(void)c;
result_ = constant::false_instance();
}
void
visit(const bunop* bo)
{
bunop::type op = bo->op();
switch (op)
formula out;
switch (f.kind())
{
case bunop::Star:
assert(bo->accepts_eword());
// Strip the star.
result_ = recurse(bo->child());
case op::EmptyWord:
out = formula::ff();
break;
case bunop::FStar:
// FIXME: Can we deal with FStar in a better way?
result_ = bo->clone();
case op::Star:
if (!bounded)
out = visit(f.nth(0)); // Strip the star.
else
out = formula::Star(visit(f.nth(0)),
std::max(unsigned(f.min()), 1U), f.max());
break;
}
}
void
visit(const unop*)
{
SPOT_UNIMPLEMENTED();
}
void
visit(const binop*)
{
SPOT_UNIMPLEMENTED();
}
void
visit(const multop* mo)
{
multop::type op = mo->op();
switch (op)
{
case multop::And:
case multop::Or:
case multop::Fusion:
SPOT_UNIMPLEMENTED();
break;
case multop::Concat:
case multop::AndNLM:
case op::Concat:
if (bounded)
{
out = f;
break;
}
// Fall through
case op::OrRat:
case op::AndNLM:
// Let F designate expressions that accept [*0],
// and G designate expressions that do not.
@ -112,100 +79,70 @@ namespace spot
//
// AndNLM can be dealt with similarly.
//
// This case is already handled in recurse().
// if we reach this switch, we only have to
// deal with...
// The above cases are already handled by the
// accepts_eword() tests at the top of this method. So
// we reach this switch, we only have to deal with...
//
// (F₁;F₂;F₃)° = (F₁°)|(F₂°)|(F₃°)
// (F₁&F₂&F₃)° = (F₁°)|(F₂°)|(F₃°)
// so we fall through to the OrRat case...
case multop::OrRat:
assert(mo->accepts_eword());
// (F₁|G₂|F₃)° = (F₁°)|(G₂°)|(F₃°)
{
unsigned s = mo->size();
multop::vec* v = new multop::vec;
v->reserve(s);
unsigned s = f.size();
std::vector<formula> v;
v.reserve(s);
for (unsigned pos = 0; pos < s; ++pos)
v->push_back(recurse(mo->nth(pos)));
result_ = multop::instance(multop::OrRat, v);
v.emplace_back(visit(f.nth(pos)));
out = formula::OrRat(v);
break;
}
break;
case multop::AndRat:
// FIXME: Can we deal with AndRat in a better way
// when it accepts [*0]?
result_ = mo->clone();
case op::False:
case op::True:
case op::AP:
case op::Not:
case op::X:
case op::F:
case op::G:
case op::Closure:
case op::NegClosure:
case op::NegClosureMarked:
case op::Xor:
case op::Implies:
case op::Equiv:
case op::U:
case op::R:
case op::W:
case op::M:
case op::EConcat:
case op::EConcatMarked:
case op::UConcat:
case op::Fusion:
case op::Or:
case op::And:
SPOT_UNREACHABLE();
case op::AndRat: // Can AndRat be handled better?
case op::FStar: // Can FStar be handled better?
out = f;
break;
}
}
const formula*
recurse(const formula* f)
{
if (!f->accepts_eword())
return f->clone();
snf_cache::const_iterator i = cache_->find(f);
if (i != cache_->end())
return i->second->clone();
f->accept(*this);
(*cache_)[f->clone()] = result_->clone();
return result_;
}
};
// E^□
class snf_visitor_bounded: public snf_visitor
{
public:
snf_visitor_bounded(snf_cache* c): snf_visitor(c)
{
}
void
visit(const bunop* bo)
{
bunop::type op = bo->op();
switch (op)
{
case bunop::Star:
assert(bo->accepts_eword());
result_ = bunop::instance(bunop::Star,
recurse(bo->child()),
std::max(bo->min(), 1U),
bo->max());
break;
case bunop::FStar:
result_ = bo->clone();
break;
}
}
void
visit(const multop* mo)
{
if (mo->op() == multop::Concat)
result_ = mo->clone();
else
this->snf_visitor::visit(mo);
return (*cache_)[f] = out;
}
};
}
const formula*
star_normal_form(const formula* sere, snf_cache* cache)
formula
star_normal_form(formula sere, snf_cache* cache)
{
snf_visitor v(cache);
return v.recurse(sere);
snf_visitor<false> v(cache);
return v.visit(sere);
}
const formula*
star_normal_form_bounded(const formula* sere, snf_cache* cache)
formula
star_normal_form_bounded(formula sere, snf_cache* cache)
{
snf_visitor_bounded v(cache);
return v.recurse(sere);
snf_visitor<true> v(cache);
return v.visit(sere);
}
}