Implements spot::ltl::destroy() and exercise it.

* src/ltlast/atomic_prop.hh: Declare instance_count().
* src/ltlast/binop.hh, src/ltlast/unop.hh, src/ltlast/multop.hh:
Likewise.  Also, really inherit for ref_formula this time.
* src/ltlast/atomic_prop.cc, src/ltlast/binop.cc,
src/ltlast/unop.cc, src/ltlast/multop.cc: On destruction, suppress
the instance from the instance map.  Implement instance_count().
* src/ltlast/formula.cc, src/ltlast/formula.hh,
src/ltlast/ref_formula.cc, src/ltlast/ref_formula.hh: Add virtual
destructors.
* src/ltlparse/ltlparse.yy: Recover from binary operators with
missing right hand operand (the point is just to destroy the
the left hand operand).
* src/ltltest/equals.cc, src/ltltest/readltl.cc,
src/ltltest/tostring.cc: Destroy used formulae.  Make sure
instance_count()s are null are the end.
* src/ltltest/parseerr.test: Adjust expected result, now
that the parser lnows about missing right hand operands.
* src/ltlvisit/destroy.hh, src/ltlvisit/destroy.cc,
src/ltlvisit/postfix.hh, src/ltlvisit/postfix.cc: New files.
* src/ltlvisit/Makefile.am (libltlvisit_la_SOURCES): Add them.
* src/ltlvisit/lunabbrev.cc (Xor, Equiv): Clone formulae
occurring twice in the rewritten expression.
This commit is contained in:
Alexandre Duret-Lutz 2003-05-15 18:06:54 +00:00
parent 5f6d8b6234
commit 9123e56ff9
24 changed files with 382 additions and 24 deletions

25
src/ltlvisit/destroy.cc Normal file
View file

@ -0,0 +1,25 @@
#include "ltlvisit/destroy.hh"
namespace spot
{
namespace ltl
{
class destroy_visitor : public postfix_visitor
{
public:
virtual void
doit_default(formula* c)
{
formula::unref(c);
}
};
void
destroy(formula *f)
{
destroy_visitor v;
f->accept(v);
}
}
}