diff options
Diffstat (limited to 'bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx b/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx new file mode 100644 index 000000000..15aa14d9b --- /dev/null +++ b/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx @@ -0,0 +1,354 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +#include <malloc.h> + +#include <com/sun/star/uno/genfunc.hxx> +#include <sal/log.hxx> +#include <uno/data.h> +#include <typelib/typedescription.hxx> + +#include <bridge.hxx> +#include <cppinterfaceproxy.hxx> +#include <types.hxx> +#include <vtablefactory.hxx> + +#include <msvc/except.hxx> +#include <msvc/cpp2uno.hxx> + +using namespace ::com::sun::star; + +static typelib_TypeClass +cpp2uno_call(bridges::cpp_uno::shared::CppInterfaceProxy* pThis, + const typelib_TypeDescription* pMemberTD, + typelib_TypeDescriptionReference* pReturnTypeRef, // nullptr indicates void return + const sal_Int32 nParams, typelib_MethodParameter* pParams, void** pCallStack, + void** const pReturnAddr) +{ + // return type + typelib_TypeDescription* pReturnTD = nullptr; + if (pReturnTypeRef) + TYPELIB_DANGER_GET(&pReturnTD, pReturnTypeRef); + + // if we don't return via register, the first stack parameter is the return value + int nFirstRealParam = 2; + if (pReturnAddr == pCallStack) + ++nFirstRealParam; + + void* pUnoReturn = nullptr; + // complex return ptr: if != nullptr && != pUnoReturn, reconversion needed + void* pCppReturn = nullptr; + + if (pReturnTD) + { + if (bridges::cpp_uno::shared::isSimpleType(pReturnTD)) + pUnoReturn = pReturnAddr; + else + { + pCppReturn = pCallStack[nFirstRealParam++]; + pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTD) + ? alloca(pReturnTD->nSize) + : pCppReturn); + } + } + + // parameters passed to the UNO function + void** pUnoArgs = static_cast<void**>(alloca(sizeof(void*) * nParams)); + + // parameters received from C++ + void** pCppArgs = static_cast<void**>(alloca(sizeof(void*) * nParams)); + + // TODO: switch to typedef std::pair<sal_Int32, typelib_TypeDescription*> ReconversationInfo; + sal_Int32 nTempIndex = 0; + // indexes of values this have to be converted (interface conversion C++<=>UNO) + sal_Int32* pTempIndexes = static_cast<sal_Int32*>(alloca(sizeof(sal_Int32) * nParams)); + // type descriptions for reconversions + typelib_TypeDescription** ppTempParamTD + = static_cast<typelib_TypeDescription**>(alloca(sizeof(void*) * nParams)); + + for (std::pair<sal_Int32, void**> p(0, pCallStack + nFirstRealParam); p.first < nParams; + ++p.first, ++p.second) + { + const auto& nPos = p.first; + auto& pCppIncomingParams = p.second; + + const typelib_MethodParameter& rParam = pParams[nPos]; + typelib_TypeDescription* pParamTD = nullptr; + TYPELIB_DANGER_GET(&pParamTD, rParam.pTypeRef); + + if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType(pParamTD)) + { + pCppArgs[nPos] = pCppIncomingParams; + pUnoArgs[nPos] = pCppIncomingParams; + if (sizeof(void*) == sizeof(sal_Int32)) // account 64bit types on 32bit arch + { + switch (pParamTD->eTypeClass) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + case typelib_TypeClass_DOUBLE: + ++pCppIncomingParams; + break; + default: + break; + } + } + TYPELIB_DANGER_RELEASE(pParamTD); + } + else // ptr to complex value | ref + { + pCppArgs[nPos] = *pCppIncomingParams; + + if (!rParam.bIn) // is pure out + { + // UNO out is unconstructed memory + pUnoArgs[nPos] = alloca(pParamTD->nSize); + // pParamTD will be released at reconversion + pTempIndexes[nTempIndex] = nPos; + ppTempParamTD[nTempIndex++] = pParamTD; + } + // is in/inout + else if (bridges::cpp_uno::shared::relatesToInterfaceType(pParamTD)) + { + ::uno_copyAndConvertData(pUnoArgs[nPos] = alloca(pParamTD->nSize), + *pCppIncomingParams, pParamTD, + pThis->getBridge()->getCpp2Uno()); + // pParamTD will be released at reconversion + pTempIndexes[nTempIndex] = nPos; + ppTempParamTD[nTempIndex++] = pParamTD; + } + else // direct way + { + pUnoArgs[nPos] = *pCppIncomingParams; + TYPELIB_DANGER_RELEASE(pParamTD); + } + } + } + + // ExceptionHolder + uno_Any aUnoExc; // Any will be constructed by callee + uno_Any* pUnoExc = &aUnoExc; + + // invoke UNO dispatch call + pThis->getUnoI()->pDispatcher(pThis->getUnoI(), pMemberTD, pUnoReturn, pUnoArgs, &pUnoExc); + + // in case an exception occurred... + if (pUnoExc) + { + // destruct temporary in/inout params + while (nTempIndex--) + { + const sal_Int32 nIndex = pTempIndexes[nTempIndex]; + if (pParams[nIndex].bIn) // is in/inout => was constructed + ::uno_destructData(pUnoArgs[nIndex], ppTempParamTD[nTempIndex], nullptr); + TYPELIB_DANGER_RELEASE(ppTempParamTD[nTempIndex]); + } + if (pReturnTD) + TYPELIB_DANGER_RELEASE(pReturnTD); + + msvc_raiseException(&aUnoExc, pThis->getBridge()->getUno2Cpp()); // has to destruct the any + + // is here for dummy + return typelib_TypeClass_VOID; + } + else // no exception occurred... + { + // handle temporary params + while (nTempIndex--) + { + const sal_Int32 nIndex = pTempIndexes[nTempIndex]; + typelib_TypeDescription* pParamTD = ppTempParamTD[nTempIndex]; + + if (pParams[nIndex].bOut) // inout/out + { + // convert and assign + ::uno_destructData(pCppArgs[nIndex], pParamTD, uno::cpp_release); + ::uno_copyAndConvertData(pCppArgs[nIndex], pUnoArgs[nIndex], pParamTD, + pThis->getBridge()->getUno2Cpp()); + } + // destroy temp UNO param + ::uno_destructData(pUnoArgs[nIndex], pParamTD, nullptr); + + TYPELIB_DANGER_RELEASE(pParamTD); + } + + // handle return + if (pCppReturn) // has complex return + { + if (pUnoReturn != pCppReturn) // needs reconversion + { + ::uno_copyAndConvertData(pCppReturn, pUnoReturn, pReturnTD, + pThis->getBridge()->getUno2Cpp()); + // destroy temp UNO return + ::uno_destructData(pUnoReturn, pReturnTD, nullptr); + } + *pReturnAddr = pCppReturn; + } + + if (!pReturnTD) + return typelib_TypeClass_VOID; + else + { + typelib_TypeClass eRet = pReturnTD->eTypeClass; + TYPELIB_DANGER_RELEASE(pReturnTD); + return eRet; + } + } +} + +typelib_TypeClass __cdecl cpp_mediate(void** pCallStack, const sal_Int32 nFunctionIndex, + const sal_Int32 nVtableOffset, + sal_Int64* const pRegisterReturn) +{ + // pCallStack: + // x64: ret value, ret adr, this, [complex ret *], cpp params + // x86: ret adr, this, [complex ret *], cpp params + // + // pRegisterReturn is just set on x86 + // the return value is either the direct set for simply types, or it is set + // to "complex ret *" and the real return value is constructed at that memory. + + // if we don't return via register, the first stack parameter is the return value + void** const pReturnAddr + = pRegisterReturn ? reinterpret_cast<void**>(pRegisterReturn) : pCallStack; + + void* const pThis = static_cast<char*>(pCallStack[pRegisterReturn ? 1 : 2]) - nVtableOffset; + bridges::cpp_uno::shared::CppInterfaceProxy* pCppI + = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(pThis); + + typelib_InterfaceTypeDescription* pInterfaceTD = pCppI->getTypeDescr(); + + SAL_INFO("bridges", "cpp_vtable_call: pCallStack=[" + << std::hex << pCallStack[0] << "," << pCallStack[1] << "," + << pCallStack[2] << ",...], pThis=" << pThis << ", pCppI=" << pCppI + << std::dec << ", nFunctionIndex=" << nFunctionIndex + << ", nVtableOffset=" << nVtableOffset); + SAL_INFO("bridges", "name=" << OUString::unacquired(&pInterfaceTD->aBase.pTypeName)); + + if (nFunctionIndex >= pInterfaceTD->nMapFunctionIndexToMemberIndex) + { + OUString sError = "illegal " + OUString::unacquired(&pInterfaceTD->aBase.pTypeName) + + " vtable index " + OUString::number(nFunctionIndex) + "/" + + OUString::number(pInterfaceTD->nMapFunctionIndexToMemberIndex); + SAL_WARN("bridges", sError); + throw uno::RuntimeException(sError, static_cast<uno::XInterface*>(pThis)); + } + + // determine called method + sal_Int32 nMemberPos = pInterfaceTD->pMapFunctionIndexToMemberIndex[nFunctionIndex]; + assert(nMemberPos < pInterfaceTD->nAllMembers); + + uno::TypeDescription aMemberDescr(pInterfaceTD->ppAllMembers[nMemberPos]); + + SAL_INFO("bridges", "Calling " << OUString::unacquired(&aMemberDescr.get()->pTypeName)); + + typelib_TypeClass eRet = typelib_TypeClass_VOID; + switch (aMemberDescr.get()->eTypeClass) + { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { + typelib_TypeDescriptionReference* pAttrTypeRef + = reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(aMemberDescr.get()) + ->pAttributeTypeRef; + + if (pInterfaceTD->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex) + { // is GET method + eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pAttrTypeRef, 0, nullptr, pCallStack, + pReturnAddr); + } + else + { // is SET method + typelib_MethodParameter aParam; + aParam.pTypeRef = pAttrTypeRef; + aParam.bIn = true; + aParam.bOut = false; + + eRet = cpp2uno_call(pCppI, aMemberDescr.get(), nullptr, 1, &aParam, pCallStack, + pReturnAddr); + } + break; + } + case typelib_TypeClass_INTERFACE_METHOD: + { + // is METHOD + switch (nFunctionIndex) + { + // standard XInterface vtable calls + case 1: // acquire() + pCppI->acquireProxy(); // non virtual call! + eRet = typelib_TypeClass_VOID; + break; + case 2: // release() + pCppI->releaseProxy(); // non virtual call! + eRet = typelib_TypeClass_VOID; + break; + case 0: // queryInterface() opt + { + const unsigned int nCppStackPos = (pReturnAddr == pCallStack) ? 4 : 3; + typelib_TypeDescription* pQueryTD = nullptr; + TYPELIB_DANGER_GET( + &pQueryTD, + static_cast<uno::Type*>(pCallStack[nCppStackPos])->getTypeLibType()); + if (pQueryTD) + { + uno::XInterface* pInterface = nullptr; + + pCppI->getBridge()->getCppEnv()->getRegisteredInterface( + pCppI->getBridge()->getCppEnv(), reinterpret_cast<void**>(&pInterface), + pCppI->getOid().pData, + reinterpret_cast<typelib_InterfaceTypeDescription*>(pQueryTD)); + + if (pInterface) + { + const unsigned int nReturnAddrPos = nCppStackPos - 1; + ::uno_any_construct(static_cast<uno_Any*>(pCallStack[nReturnAddrPos]), + &pInterface, pQueryTD, uno::cpp_acquire); + pInterface->release(); + TYPELIB_DANGER_RELEASE(pQueryTD); + + *pReturnAddr = pCallStack[nReturnAddrPos]; + eRet = typelib_TypeClass_ANY; + break; + } + TYPELIB_DANGER_RELEASE(pQueryTD); + } + [[fallthrough]]; + } + default: // perform queryInterface() + { + typelib_InterfaceMethodTypeDescription* pMethodTD + = reinterpret_cast<typelib_InterfaceMethodTypeDescription*>( + aMemberDescr.get()); + + eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pMethodTD->pReturnTypeRef, + pMethodTD->nParams, pMethodTD->pParams, pCallStack, + pReturnAddr); + } + } + break; + } + default: + throw uno::RuntimeException("no member description found!", + static_cast<uno::XInterface*>(pThis)); + } + + return eRet; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |