binaryurp/source/proxy.cxx

   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 #include <sal/config.h>
  21
  22 #include <cassert>
  23 #include <exception>
  24 #include <utility>
  25 #include <vector>
  26
  27 #include <cppuhelper/exc_hlp.hxx>
  28 #include <o3tl/runtimetooustring.hxx>
  29 #include <rtl/ref.hxx>
  30 #include <rtl/ustring.hxx>
  31 #include <sal/types.h>
  32 #include <typelib/typedescription.h>
  33 #include <typelib/typedescription.hxx>
  34 #include <uno/any2.h>
  35 #include <uno/dispatcher.h>
  36 #include <uno/dispatcher.hxx>
  37
  38 #include "binaryany.hxx"
  39 #include "bridge.hxx"
  40 #include "proxy.hxx"
  41
  42 namespace binaryurp {
  43
  44 namespace {
  45
  46 extern "C" void proxy_acquireInterface(uno_Interface * pInterface) {
  47     assert(pInterface != nullptr);
  48     static_cast< Proxy * >(pInterface)->do_acquire();
  49 }
  50
  51 extern "C" void proxy_releaseInterface(uno_Interface * pInterface) {
  52     assert(pInterface != nullptr);
  53     static_cast< Proxy * >(pInterface)->do_release();
  54 }
  55
  56 extern "C" void proxy_dispatchInterface(
  57     uno_Interface * pUnoI, typelib_TypeDescription const * pMemberType,
  58     void * pReturn, void ** pArgs, uno_Any ** ppException)
  59 {
  60     assert(pUnoI != nullptr);
  61     static_cast< Proxy * >(pUnoI)->do_dispatch(
  62         pMemberType, pReturn, pArgs, ppException);
  63 }
  64
  65 }
  66
  67 Proxy::Proxy(
  68     rtl::Reference< Bridge > const & bridge, OUString oid,
  69     css::uno::TypeDescription type):
  70     bridge_(bridge), oid_(std::move(oid)), type_(std::move(type)), references_(1)
  71 {
  72     assert(bridge.is());
  73     acquire = &proxy_acquireInterface;
  74     release = &proxy_releaseInterface;
  75     pDispatcher = &proxy_dispatchInterface;
  76 }
  77
  78
  79 void Proxy::do_acquire() {
  80     if (++references_ == 1) {
  81         bridge_->resurrectProxy(*this);
  82     }
  83 }
  84
  85 void Proxy::do_release() {
  86     if (--references_ == 0) {
  87         bridge_->revokeProxy(*this);
  88     }
  89 }
  90
  91 void Proxy::do_free() {
  92     bridge_->freeProxy(*this);
  93     delete this;
  94 }
  95
  96 void Proxy::do_dispatch(
  97     typelib_TypeDescription const * member, void * returnValue,
  98     void ** arguments, uno_Any ** exception) const
  99 {
 100     try {
 101         try {
 102             do_dispatch_throw(member, returnValue, arguments, exception);
 103         } catch (const std::exception & e) {
 104             throw css::uno::RuntimeException(
 105                 "caught C++ exception: " + o3tl::runtimeToOUString(e.what()));
 106         }
 107     } catch (const css::uno::RuntimeException &) {
 108         css::uno::Any exc(cppu::getCaughtException());
 109         uno_copyAndConvertData(
 110             *exception, &exc,
 111             (css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get()).
 112              get()),
 113             bridge_->getCppToBinaryMapping().get());
 114     }
 115 }
 116
 117 bool Proxy::isProxy(
 118     rtl::Reference< Bridge > const & bridge,
 119     css::uno::UnoInterfaceReference const & object, OUString * oid)
 120 {
 121     assert(object.is());
 122     return object.m_pUnoI->acquire == &proxy_acquireInterface &&
 123         static_cast< Proxy * >(object.m_pUnoI)->isProxy(bridge, oid);
 124 }
 125
 126 Proxy::~Proxy() {}
 127
 128 void Proxy::do_dispatch_throw(
 129     typelib_TypeDescription const * member, void * returnValue,
 130     void ** arguments, uno_Any ** exception) const
 131 {
 132     //TODO: Optimize queryInterface:
 133     assert(member != nullptr);
 134     bool bSetter = false;
 135     std::vector< BinaryAny > inArgs;
 136     switch (member->eTypeClass) {
 137     case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 138         bSetter = returnValue == nullptr;
 139         if (bSetter) {
 140             inArgs.emplace_back(
 141                     css::uno::TypeDescription(
 142                         reinterpret_cast<
 143                             typelib_InterfaceAttributeTypeDescription const * >(
 144                                 member)->
 145                         pAttributeTypeRef),
 146                     arguments[0]);
 147         }
 148         break;
 149     case typelib_TypeClass_INTERFACE_METHOD:
 150         {
 151             typelib_InterfaceMethodTypeDescription const * mtd =
 152                 reinterpret_cast<
 153                     typelib_InterfaceMethodTypeDescription const * >(member);
 154             for (sal_Int32 i = 0; i != mtd->nParams; ++i) {
 155                 if (mtd->pParams[i].bIn) {
 156                     inArgs.emplace_back(
 157                             css::uno::TypeDescription(mtd->pParams[i].pTypeRef),
 158                             arguments[i]);
 159                 }
 160             }
 161             break;
 162         }
 163     default:
 164         assert(false); // this cannot happen
 165         break;
 166     }
 167     BinaryAny ret;
 168     std::vector< BinaryAny > outArgs;
 169     if (bridge_->makeCall(
 170             oid_,
 171             css::uno::TypeDescription(
 172                 const_cast< typelib_TypeDescription * >(member)),
 173             bSetter, std::move(inArgs), &ret, &outArgs))
 174     {
 175         assert(ret.getType().get()->eTypeClass == typelib_TypeClass_EXCEPTION);
 176         uno_any_construct(
 177             *exception, ret.getValue(ret.getType()), ret.getType().get(), nullptr);
 178     } else {
 179         switch (member->eTypeClass) {
 180         case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 181             if (!bSetter) {
 182                 css::uno::TypeDescription t(
 183                     reinterpret_cast<
 184                         typelib_InterfaceAttributeTypeDescription const * >(
 185                             member)->
 186                     pAttributeTypeRef);
 187                 uno_copyData(returnValue, ret.getValue(t), t.get(), nullptr);
 188             }
 189             break;
 190         case typelib_TypeClass_INTERFACE_METHOD:
 191             {
 192                 typelib_InterfaceMethodTypeDescription const * mtd =
 193                     reinterpret_cast<
 194                         typelib_InterfaceMethodTypeDescription const * >(
 195                             member);
 196                 css::uno::TypeDescription t(mtd->pReturnTypeRef);
 197                 if (t.get()->eTypeClass != typelib_TypeClass_VOID) {
 198                     uno_copyData(returnValue, ret.getValue(t), t.get(), nullptr);
 199                 }
 200                 std::vector< BinaryAny >::iterator i(outArgs.begin());
 201                 for (sal_Int32 j = 0; j != mtd->nParams; ++j) {
 202                     if (mtd->pParams[j].bOut) {
 203                         css::uno::TypeDescription pt(mtd->pParams[j].pTypeRef);
 204                         if (mtd->pParams[j].bIn) {
 205                             (void) uno_assignData(
 206                                 arguments[j], pt.get(), i++->getValue(pt),
 207                                 pt.get(), nullptr, nullptr, nullptr);
 208                         } else {
 209                             uno_copyData(
 210                                 arguments[j], i++->getValue(pt), pt.get(), nullptr);
 211                         }
 212                     }
 213                 }
 214                 assert(i == outArgs.end());
 215                 break;
 216             }
 217         default:
 218             assert(false); // this cannot happen
 219             break;
 220         }
 221         *exception = nullptr;
 222     }
 223 }
 224
 225 bool Proxy::isProxy(
 226     rtl::Reference< Bridge > const & bridge, OUString * oid) const
 227 {
 228     assert(oid != nullptr);
 229     if (bridge == bridge_) {
 230         *oid = oid_;
 231         return true;
 232     } else {
 233         return false;
 234     }
 235 }
 236
 237 }
 238
 239 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */