void Manager::View::cleanClause(Clause & clause) {
exprView.sort(clause.begin(), clause.end());
for (Clause::iterator it = clause.begin(); it != clause.end(); ) {
if (*it == exprView.btrue())
// [true lit]
throw Trivial(true);
else if (*it == exprView.bfalse())
// [false lit]
clause.erase(it);
else if (it+1 != clause.end()) {
if (*it == *(it+1)) {
// [repetition of lit]
clause.erase(it);
}
else if (*it == exprView.apply(Expr::Not, *(it+1)))
// [var with both phases]
// Relies on how Expr handles negation, so possibly a hack.
// However, I meant for this property to be usable, so it
// will be maintained.
throw Trivial(true);
else
it++;
}
else
it++;
}
if (clause.size() == 0)
// empty clause
throw Trivial(false);
}
void test() {
int i = 0;
const int k = 0;
auto captures_nothing = [] {};
auto captures_nothing_by_value = [=] {};
auto captures_nothing_by_reference = [&] {};
auto implicit_by_value = [=]() mutable { i++; };
auto implicit_by_reference = [&] { i++; };
auto explicit_by_value_used = [i] { return i + 1; };
auto explicit_by_value_used_void = [i] { (void)i; };
auto explicit_by_value_unused = [i] {}; // expected-warning{{lambda capture 'i' is not used}}
auto explicit_by_value_unused_sizeof = [i] { return sizeof(i); }; // expected-warning{{lambda capture 'i' is not required to be captured for this use}}
auto explicit_by_value_unused_decltype = [i] { decltype(i) j = 0; }; // expected-warning{{lambda capture 'i' is not required to be captured for this use}}
auto explicit_by_value_unused_const = [k] { return k + 1; }; // expected-warning{{lambda capture 'k' is not required to be captured for this use}}
auto explicit_by_reference_used = [&i] { i++; };
auto explicit_by_reference_unused = [&i] {}; // expected-warning{{lambda capture 'i' is not used}}
auto explicit_initialized_reference_used = [&j = i] { return j + 1; };
auto explicit_initialized_reference_unused = [&j = i]{}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_used = [j = 1] { return j + 1; };
auto explicit_initialized_value_unused = [j = 1] {}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_non_trivial_constructor = [j = NonTrivialConstructor()]{};
auto explicit_initialized_value_non_trivial_destructor = [j = NonTrivialDestructor()]{};
auto explicit_initialized_value_trivial_init = [j = Trivial()]{}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_non_trivial_init = [j = Trivial(42)]{};
auto explicit_initialized_value_with_side_effect = [j = side_effect()]{};
auto nested = [&i] {
auto explicit_by_value_used = [i] { return i + 1; };
auto explicit_by_value_unused = [i] {}; // expected-warning{{lambda capture 'i' is not used}}
};
Trivial trivial;
auto explicit_by_value_trivial = [trivial] {}; // expected-warning{{lambda capture 'trivial' is not used}}
NonTrivialConstructor cons;
auto explicit_by_value_non_trivial_constructor = [cons] {}; // expected-warning{{lambda capture 'cons' is not used}}
NonTrivialCopyConstructor copy_cons;
auto explicit_by_value_non_trivial_copy_constructor = [copy_cons] {};
NonTrivialDestructor dest;
auto explicit_by_value_non_trivial_destructor = [dest] {};
volatile int v;
auto explicit_by_value_volatile = [v] {};
}
const Trivial &getTrivialRef() {
return Trivial(42); // expected-warning {{Address of stack memory associated with temporary object of type 'Trivial' returned to caller}}
}
Trivial getTrivial() {
return Trivial(42); // no-warning
}
Group Group::trivial() {return Group(Trivial()); }