1 files changed, 102 insertions, 0 deletions
diff --git a/boost/contract/detail/operation/destructor.hpp b/boost/contract/detail/operation/destructor.hpp
new file mode 100644
index 0000000000..ea8d8780a1
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+++ b/boost/contract/detail/operation/destructor.hpp
@@ -0,0 +1,102 @@
+
+#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
+