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 <vector>
  25
  26 #include "cppuhelper/exc_hlp.hxx"
  27 #include "rtl/ref.hxx"
  28 #include "rtl/ustring.hxx"
  29 #include "sal/types.h"
  30 #include "typelib/typedescription.h"
  31 #include "typelib/typedescription.hxx"
  32 #include "uno/any2.h"
  33 #include "uno/dispatcher.h"
  34 #include "uno/dispatcher.hxx"
  35
  36 #include "binaryany.hxx"
  37 #include "bridge.hxx"
  38 #include "proxy.hxx"
  39
  40 namespace binaryurp {
  41
  42 namespace {
  43
  44 extern "C" void SAL_CALL proxy_acquireInterface(uno_Interface * pInterface) {
  45     assert(pInterface != 0);
  46     static_cast< Proxy * >(pInterface)->do_acquire();
  47 }
  48
  49 extern "C" void SAL_CALL proxy_releaseInterface(uno_Interface * pInterface) {
  50     assert(pInterface != 0);
  51     static_cast< Proxy * >(pInterface)->do_release();
  52 }
  53
  54 extern "C" void SAL_CALL proxy_dispatchInterface(
  55     uno_Interface * pUnoI, typelib_TypeDescription const * pMemberType,
  56     void * pReturn, void ** pArgs, uno_Any ** ppException)
  57 {
  58     assert(pUnoI != 0);
  59     static_cast< Proxy * >(pUnoI)->do_dispatch(
  60         pMemberType, pReturn, pArgs, ppException);
  61 }
  62
  63 }
  64
  65 Proxy::Proxy(
  66     rtl::Reference< Bridge > const & bridge, OUString const & oid,
  67     css::uno::TypeDescription const & type):
  68     bridge_(bridge), oid_(oid), type_(type), references_(1)
  69 {
  70     assert(bridge.is());
  71     acquire = &proxy_acquireInterface;
  72     release = &proxy_releaseInterface;
  73     pDispatcher = &proxy_dispatchInterface;
  74 }
  75
  76 OUString Proxy::getOid() const {
  77     return oid_;
  78 }
  79
  80 css::uno::TypeDescription Proxy::getType() const {
  81     return type_;
  82 }
  83
  84 void Proxy::do_acquire() {
  85     if (osl_atomic_increment(&references_) == 1) {
  86         bridge_->resurrectProxy(*this);
  87     }
  88 }
  89
  90 void Proxy::do_release() {
  91     if (osl_atomic_decrement(&references_) == 0) {
  92         bridge_->revokeProxy(*this);
  93     }
  94 }
  95
  96 void Proxy::do_free() {
  97     bridge_->freeProxy(*this);
  98     delete this;
  99 }
 100
 101 void Proxy::do_dispatch(
 102     typelib_TypeDescription const * member, void * returnValue,
 103     void ** arguments, uno_Any ** exception) const
 104 {
 105     try {
 106         try {
 107             do_dispatch_throw(member, returnValue, arguments, exception);
 108         } catch (const std::exception & e) {
 109             throw css::uno::RuntimeException(
 110                 ("caught C++ exception: " +
 111                 OStringToOUString(
 112                     OString(e.what()), RTL_TEXTENCODING_ASCII_US)),
 113                 css::uno::Reference< css::uno::XInterface >());
 114                 // best-effort string conversion
 115         }
 116     } catch (const css::uno::RuntimeException &) {
 117         css::uno::Any exc(cppu::getCaughtException());
 118         uno_copyAndConvertData(
 119             *exception, &exc,
 120             (css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get()).
 121              get()),
 122             bridge_->getCppToBinaryMapping().get());
 123     }
 124 }
 125
 126 bool Proxy::isProxy(
 127     rtl::Reference< Bridge > const & bridge,
 128     css::uno::UnoInterfaceReference const & object, OUString * oid)
 129 {
 130     assert(object.is());
 131     return object.m_pUnoI->acquire == &proxy_acquireInterface &&
 132         static_cast< Proxy * >(object.m_pUnoI)->isProxy(bridge, oid);
 133 }
 134
 135 Proxy::~Proxy() {}
 136
 137 void Proxy::do_dispatch_throw(
 138     typelib_TypeDescription const * member, void * returnValue,
 139     void ** arguments, uno_Any ** exception) const
 140 {
 141     //TODO: Optimize queryInterface:
 142     assert(member != 0);
 143     bool setter = false;
 144     std::vector< BinaryAny > inArgs;
 145     switch (member->eTypeClass) {
 146     case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 147         setter = returnValue == 0;
 148         if (setter) {
 149             inArgs.push_back(
 150                 BinaryAny(
 151                     css::uno::TypeDescription(
 152                         reinterpret_cast<
 153                             typelib_InterfaceAttributeTypeDescription const * >(
 154                                 member)->
 155                         pAttributeTypeRef),
 156                     arguments[0]));
 157         }
 158         break;
 159     case typelib_TypeClass_INTERFACE_METHOD:
 160         {
 161             typelib_InterfaceMethodTypeDescription const * mtd =
 162                 reinterpret_cast<
 163                     typelib_InterfaceMethodTypeDescription const * >(member);
 164             for (sal_Int32 i = 0; i != mtd->nParams; ++i) {
 165                 if (mtd->pParams[i].bIn) {
 166                     inArgs.push_back(
 167                         BinaryAny(
 168                             css::uno::TypeDescription(mtd->pParams[i].pTypeRef),
 169                             arguments[i]));
 170                 }
 171             }
 172             break;
 173         }
 174     default:
 175         assert(false); // this cannot happen
 176         break;
 177     }
 178     BinaryAny ret;
 179     std::vector< BinaryAny > outArgs;
 180     if (bridge_->makeCall(
 181             oid_,
 182             css::uno::TypeDescription(
 183                 const_cast< typelib_TypeDescription * >(member)),
 184             setter, inArgs, &ret, &outArgs))
 185     {
 186         assert(ret.getType().get()->eTypeClass == typelib_TypeClass_EXCEPTION);
 187         uno_any_construct(
 188             *exception, ret.getValue(ret.getType()), ret.getType().get(), 0);
 189     } else {
 190         switch (member->eTypeClass) {
 191         case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 192             if (!setter) {
 193                 css::uno::TypeDescription t(
 194                     reinterpret_cast<
 195                         typelib_InterfaceAttributeTypeDescription const * >(
 196                             member)->
 197                     pAttributeTypeRef);
 198                 uno_copyData(returnValue, ret.getValue(t), t.get(), 0);
 199             }
 200             break;
 201         case typelib_TypeClass_INTERFACE_METHOD:
 202             {
 203                 typelib_InterfaceMethodTypeDescription const * mtd =
 204                     reinterpret_cast<
 205                         typelib_InterfaceMethodTypeDescription const * >(
 206                             member);
 207                 css::uno::TypeDescription t(mtd->pReturnTypeRef);
 208                 if (t.get()->eTypeClass != typelib_TypeClass_VOID) {
 209                     uno_copyData(returnValue, ret.getValue(t), t.get(), 0);
 210                 }
 211                 std::vector< BinaryAny >::iterator i(outArgs.begin());
 212                 for (sal_Int32 j = 0; j != mtd->nParams; ++j) {
 213                     if (mtd->pParams[j].bOut) {
 214                         css::uno::TypeDescription pt(mtd->pParams[j].pTypeRef);
 215                         if (mtd->pParams[j].bIn) {
 216                             uno_assignData(
 217                                 arguments[j], pt.get(), i++->getValue(pt),
 218                                 pt.get(), 0, 0, 0);
 219                         } else {
 220                             uno_copyData(
 221                                 arguments[j], i++->getValue(pt), pt.get(), 0);
 222                         }
 223                     }
 224                 }
 225                 assert(i == outArgs.end());
 226                 break;
 227             }
 228         default:
 229             assert(false); // this cannot happen
 230             break;
 231         }
 232         *exception = 0;
 233     }
 234 }
 235
 236 bool Proxy::isProxy(
 237     rtl::Reference< Bridge > const & bridge, OUString * oid) const
 238 {
 239     assert(oid != 0);
 240     if (bridge == bridge_) {
 241         *oid = oid_;
 242         return true;
 243     } else {
 244         return false;
 245     }
 246 }
 247
 248 }
 249
 250 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */