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+
+#ifndef BOOST_CONTRACT_DETAIL_DESTRUCTOR_HPP_
+#define BOOST_CONTRACT_DETAIL_DESTRUCTOR_HPP_
+
+// Copyright (C) 2008-2018 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0 (see accompanying
+// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
+// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
+
+#include <boost/contract/core/exception.hpp>
+#include <boost/contract/core/config.hpp>
+#include <boost/contract/detail/condition/cond_inv.hpp>
+#include <boost/contract/detail/none.hpp>
+#if !defined(BOOST_CONTRACT_ALL_DISABLE_NO_ASSERTION) && ( \
+ !defined(BOOST_CONTRACT_NO_INVARIANTS) || \
+ !defined(BOOST_CONTRACT_NO_POSTCONDITIONS) || \
+ !defined(BOOST_CONTRACT_NO_EXCEPTS))
+ #include <boost/contract/detail/checking.hpp>
+#endif
+#if !defined(BOOST_CONTRACT_NO_EXIT_INVARIANTS) || \
+ !defined(BOOST_CONTRACT_NO_POSTCONDITIONS) || \
+ !defined(BOOST_CONTRACT_NO_EXCEPTS)
+ #include <boost/config.hpp>
+ #include <exception>
+#endif
+
+namespace boost { namespace contract { namespace detail {
+
+// Dtor subcontracting impl via C++ obj destruction mechanism.
+template<class C> // Non-copyable base.
+class destructor : public cond_inv</* VR = */ none, C> {
+public:
+ explicit destructor(C* obj) : cond_inv</* VR = */ none, C>(
+ boost::contract::from_destructor, obj) {}
+
+private:
+ #if !defined(BOOST_CONTRACT_NO_ENTRY_INVARIANTS) || \
+ !defined(BOOST_CONTRACT_NO_OLDS)
+ void init() /* override */ {
+ #ifndef BOOST_CONTRACT_ALL_DISABLE_NO_ASSERTION
+ if(checking::already()) return;
+ #endif
+
+ #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
+ {
+ #ifndef BOOST_CONTRACT_ALL_DISABLE_NO_ASSERTION
+ checking k;
+ #endif
+ // Obj exists (before dtor body), check static and non- inv.
+ this->check_entry_all_inv();
+ // Dtor cannot have pre because it has no parameters.
+ }
+ #endif
+ #ifndef BOOST_CONTRACT_NO_OLDS
+ this->copy_old();
+ #endif
+ }
+ #endif
+
+public:
+ #if !defined(BOOST_CONTRACT_NO_EXIT_INVARIANTS) || \
+ !defined(BOOST_CONTRACT_NO_POSTCONDITIONS) || \
+ !defined(BOOST_CONTRACT_NO_EXCEPTS)
+ ~destructor() BOOST_NOEXCEPT_IF(false) {
+ this->assert_initialized();
+ #ifndef BOOST_CONTRACT_ALL_DISABLE_NO_ASSERTION
+ if(checking::already()) return;
+ checking k;
+ #endif
+
+ // If dtor body threw, obj still exists so check subcontracted
+ // static and non- inv (but no post because of throw). Otherwise,
+ // obj destructed so check static inv and post (even if there is no
+ // obj after dtor body, this library allows dtor post, for example
+ // to check static members for an instance counter class).
+ // NOTE: In theory C++ destructors should not throw, but the
+ // language allows for that (even if in C++11 dtors declarations are
+ // implicitly noexcept(true) unless specified otherwise) so this
+ // library must handle such a case.
+ if(std::uncaught_exception()) {
+ #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
+ this->check_exit_all_inv();
+ #endif
+ #ifndef BOOST_CONTRACT_NO_EXCEPTS
+ this->check_except();
+ #endif
+ } else {
+ #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
+ this->check_exit_static_inv();
+ #endif
+ #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
+ this->check_post(none());
+ #endif
+ }
+ }
+ #endif
+};
+
+} } } // namespace
+
+#endif // #include guard
+