bridges/inc/bridge.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_BRIDGES_INC_BRIDGE_HXX
  21 #define INCLUDED_BRIDGES_INC_BRIDGE_HXX
  22
  23 #include <sal/config.h>
  24
  25 #include <atomic>
  26 #include <cstddef>
  27
  28 #include <sal/types.h>
  29 #include <typelib/typedescription.h>
  30 #include <uno/environment.h>
  31 #include <uno/mapping.h>
  32
  33 namespace bridges { namespace cpp_uno { namespace shared {
  34
  35 // private:
  36 extern "C" void freeMapping(uno_Mapping *);
  37
  38 // private:
  39 extern "C" void acquireMapping(uno_Mapping *);
  40
  41 // private:
  42 extern "C" void releaseMapping(uno_Mapping *);
  43
  44 // private:
  45 extern "C" void cpp2unoMapping(
  46     uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
  47
  48 // private:
  49 extern "C" void uno2cppMapping(
  50     uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
  51
  52 /**
  53  * Holding environments and mappings.
  54  */
  55 class Bridge {
  56 public:
  57     // Interface for generic/component.cxx:
  58
  59     static uno_Mapping * createMapping(
  60         uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
  61         bool bExportCpp2Uno);
  62
  63     // Interface for Cpp/UnoInterfaceProxy:
  64
  65     void acquire();
  66     void release();
  67
  68     // Interface for individual CPP--UNO bridges:
  69
  70     uno_ExtEnvironment * getCppEnv() { return pCppEnv; }
  71     uno_ExtEnvironment * getUnoEnv() { return pUnoEnv; }
  72
  73     uno_Mapping * getCpp2Uno() { return &aCpp2Uno; }
  74     uno_Mapping * getUno2Cpp() { return &aUno2Cpp; }
  75
  76 private:
  77     Bridge(Bridge const &) = delete;
  78     Bridge& operator =(const Bridge&) = delete;
  79
  80     Bridge(
  81         uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
  82         bool bExportCpp2Uno_);
  83
  84     ~Bridge();
  85
  86     struct Mapping: public uno_Mapping {
  87         Bridge * pBridge;
  88     };
  89
  90     std::atomic<std::size_t> nRef;
  91
  92     uno_ExtEnvironment * pCppEnv;
  93     uno_ExtEnvironment * pUnoEnv;
  94
  95     Mapping aCpp2Uno;
  96     Mapping aUno2Cpp;
  97
  98     bool bExportCpp2Uno;
  99
 100     friend void freeMapping(uno_Mapping * pMapping);
 101
 102     friend void acquireMapping(uno_Mapping * pMapping);
 103
 104     friend void releaseMapping(uno_Mapping * pMapping);
 105
 106     friend void cpp2unoMapping(
 107         uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
 108         typelib_InterfaceTypeDescription * pTypeDescr);
 109
 110     friend void uno2cppMapping(
 111         uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
 112         typelib_InterfaceTypeDescription * pTypeDescr);
 113 };
 114
 115 } } }
 116
 117 #endif
 118
 119 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */