| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| |
| #ifndef _VOS_REF_HXX_ |
| #define _VOS_REF_HXX_ |
| |
| /** |
| ORef<T> |
| |
| template type to implement handle/body behaviour |
| with reference-counting. |
| |
| Note that the template-type T MUST implement IReferenceCounter. |
| |
| */ |
| |
| # include <vos/refernce.hxx> |
| #ifndef _VOS_DIAGNOSE_HXX_ |
| # include <vos/diagnose.hxx> |
| #endif |
| |
| namespace vos |
| { |
| |
| |
| template <class T> |
| class ORef |
| { |
| public: |
| |
| /** Creates an "empty" reference, use "create()" or |
| assignment/copy-operator to make it a valid reference. |
| */ |
| ORef(); |
| |
| /** Creates a reference which points to pBody. |
| pBodys reference is not changed!. (like create(...)). |
| */ |
| ORef(T* pBody); |
| |
| /** Overload copy-constr. to implement ref-counting. |
| As a result of the following code: |
| |
| ORef<x> h1, h2; |
| |
| h1.create(); |
| h2= h1; |
| |
| h1 and h2 will represent the same body. |
| |
| */ |
| ORef(const ORef<T>& handle); |
| |
| /** Decreases ref-count of underlying body. |
| */ |
| inline ~ORef(); |
| |
| /** Overload assignment-operator to implement ref-counting. |
| Unbinds this instance from its body (if bound) and |
| bind it to the body represented by the handle. |
| */ |
| ORef<T>& SAL_CALL operator= (const ORef<T>& handle); |
| |
| |
| |
| /** Binds the body to this handle. |
| The "pBody"s reference-count is increased. |
| |
| If you call bind() on an existing body, |
| the old body is unbound before the new one is |
| assigned. |
| |
| */ |
| void SAL_CALL bind(T* pBody); |
| |
| /** Unbind the body from this handle. |
| Note that for a handle representing a large body, |
| "handle.unbind().bind(new body());" _might_ |
| perform a little bit better than "handle.bind(new body());", |
| since in the second case two large objects exist in memory |
| (the old body and the new body). |
| */ |
| ORef<T>& SAL_CALL unbind(); |
| |
| /** Same as bind(). |
| */ |
| void SAL_CALL operator= (T* pBody); |
| |
| /** Just in case you want to call handle().someBodyOp()... |
| */ |
| T& SAL_CALL operator() () const; |
| |
| /** Allows (*handle).someBodyOp(). |
| */ |
| T& SAL_CALL operator* () const; |
| |
| /** Probably most common used: handle->someBodyOp(). |
| */ |
| T* SAL_CALL operator->() const; |
| |
| /** Gives access to the handles body. |
| */ |
| T& SAL_CALL getBody() const; |
| |
| /** Can be used instead of operator->. |
| I.e. handle->someBodyOp() and handle.getBodyPtr()->someBodyOp() |
| are the same. |
| */ |
| T* SAL_CALL getBodyPtr() const; |
| |
| /** Returns True is the body is empty (the handle |
| does not point to a valid body). |
| */ |
| sal_Bool SAL_CALL isEmpty() const; |
| |
| /** Returns True is the body is "full" (the handle |
| does point to a valid body). |
| */ |
| sal_Bool SAL_CALL isValid() const; |
| |
| /** Returns True is handle points to the same body. |
| */ |
| sal_Bool SAL_CALL isEqualBody(const ORef<T>& handle) const; |
| |
| /** Delegates comparison to the body. |
| */ |
| sal_Bool SAL_CALL operator== (const ORef<T>& handle) const; |
| |
| /** Delegates comparison to the body. |
| */ |
| sal_Bool SAL_CALL operator!= (const ORef<T>& handle) const; |
| |
| /** Returns True is "this" points to pBody. |
| */ |
| sal_Bool SAL_CALL operator== (const T* pBody) const; |
| |
| /** Needed to place ORefs into STL collection. |
| Delegates comparison to the body. |
| */ |
| sal_Bool SAL_CALL operator< (const ORef<T>& handle) const; |
| |
| /** Needed to place ORefs into STL collection. |
| Delegates comparison to the body. |
| */ |
| sal_Bool SAL_CALL operator> (const ORef<T>& handle) const; |
| |
| protected: |
| |
| T* m_refBody; |
| }; |
| |
| // include template implementation |
| #include <vos/ref.inl> |
| |
| } |
| |
| |
| #endif // _VOS_REF_HXX_ |