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ltl: get rid of ltl::ref_formula

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Instead, manage all reference counting from ltl::formula.
It ridance of virtual calls to clone() and destroy() easily compensate
the extra test in destroy() to not delete constant nodes.

* src/ltlast/refformula.cc, src/ltlast/refformula.hh: Delete.
* src/ltlast/Makefile.am, wrap/python/spot.i: Adjust.
* 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/formula.cc, src/ltlast/formula.hh,
src/ltlast/multop.cc, src/ltlast/multop.hh, src/ltlast/unop.cc,
src/ltlast/unop.hh: Ajust the reference counting code.
This commit is contained in:
Alexandre Duret-Lutz 2014-10-25 16:47:44 +02:00
parent d79da2e941
commit 8d947a8782
16 changed files with 70 additions and 210 deletions
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32
src/ltlast/formula.cc
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@ -35,38 +35,6 @@ namespace spot
{
size_t formula::max_serial = 0;
const formula*
formula::clone() const
{
this->ref_();
return this;
}
formula::~formula()
{
}
void
formula::destroy() const
{
if (this->unref_())
delete this;
}
void
formula::ref_() const
{
// Not reference counted by default.
}
bool
formula::unref_() const
{
// Not reference counted by default.
return false;
}
#define printprops \
proprint(is_boolean, "B", "Boolean formula"); \
proprint(is_sugar_free_boolean, "&", "without Boolean sugar"); \