// bslma_managedptr_pairproxy.h -*-C++-*- #ifndef INCLUDED_BSLMA_MANAGEDPTR_PAIRPROXY #define INCLUDED_BSLMA_MANAGEDPTR_PAIRPROXY #include <bsls_ident.h> BSLS_IDENT("$Id: $") //@PURPOSE: Provide the internal state of a managed pointer class. // //@CLASSES: // bslma::ManagedPtr_PairProxy: internal state of a 'bslma::ManagedPtr' object // //@SEE_ALSO: bslma_managedptr // //@DESCRIPTION: This component provides a class, 'bslma::ManagedPtr_PairProxy', // that can be used to create a 'bsl::pair' with the same arguments. It is // provided in order to support a (deprecated) legacy API in 'ManagedPtr' as // part of the transition from the 'bdema' package to 'bslma'. With the // transition, the 'bslma' managed pointer component is lower in the package // group levelization than 'bsl::pair', so we instead return a type that is // implicitly convertible to 'pair'. Note that this implies that an implicit // constructor has been added to 'bsl::pair'. #include <bslscm_version.h> #include <bslmf_isbitwisemoveable.h> #include <bsls_assert.h> namespace BloombergLP { namespace bslma { // ========================== // class ManagedPtr_PairProxy // ========================== template <class POINTER_TYPE, class ASSOCIATED_TYPE> struct ManagedPtr_PairProxy { // This class is a simple aggregate that may be used to construct a // 'bsl::pair' object. It will be a POD if the (template parameter) // 'ASSOCIATED_TYPE' is a POD. Note that the names of the data members // must exactly match those of 'bsl::pair' to support users simply acting // on the result of a function call from which a pair proxy is returned, // and not assigning that result to a 'bsl::pair' first. POINTER_TYPE *first; ASSOCIATED_TYPE second; }; // ============================================================================ // INLINE DEFINITIONS // ============================================================================ // -------------------------- // class ManagedPtr_PairProxy // -------------------------- } // close package namespace // TYPE TRAITS namespace bslmf { template <class POINTER_TYPE, class ASSOCIATED_TYPE> struct IsBitwiseMoveable<bslma::ManagedPtr_PairProxy<POINTER_TYPE, ASSOCIATED_TYPE> > : IsBitwiseMoveable<ASSOCIATED_TYPE>::type { }; } // close namespace bslmf } // close enterprise namespace #endif // ---------------------------------------------------------------------------- // Copyright 2016 Bloomberg Finance L.P. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // ----------------------------- END-OF-FILE ----------------------------------