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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


#include <sal/alloca.h>

#include <com/sun/star/uno/genfunc.hxx>
#include "com/sun/star/uno/RuntimeException.hpp"
#include <uno/data.h>

#include "bridges/cpp_uno/shared/bridge.hxx"
#include "bridges/cpp_uno/shared/types.hxx"
#include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
#include "bridges/cpp_uno/shared/vtables.hxx"

#include "cc50_solaris_intel.hxx"

using namespace com::sun::star::uno;

using ::rtl::OUString;

namespace
{

extern "C" {
    void callVirtualMethod(
        void * pAdjustedThisPtr,
        sal_Int32 nVtableIndex,
        void * pRegisterReturn,
        typelib_TypeClass eReturnType,
        sal_Int32 * pStackLongs,
        sal_Int32 nStackLongs
        );
}

//==================================================================================================
static inline void cpp_call(
    bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
    bridges::cpp_uno::shared::VtableSlot aVtableSlot,
    typelib_TypeDescriptionReference * pReturnTypeRef,
    sal_Int32 nParams, typelib_MethodParameter * pParams,
    void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
{
      // max space for: [complex ret ptr], values|ptr ...
      char * pCppStack = (char *)alloca( ((nParams+3) * sizeof(sal_Int64)) );
      char * pCppStackStart = pCppStack;

      // return
    typelib_TypeDescription * pReturnTypeDescr = 0;
    TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
    OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );

      void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion

    void * pReturnSpace = 0;

    if (pReturnTypeDescr)
    {
        if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
        {
            pCppReturn = pUnoReturn; // direct way for simple types
        }
        else
        {
            // complex return via ptr
            pCppReturn = *(void **)pCppStack
                = (bridges::cpp_uno::shared::relatesToInterfaceType(
                       pReturnTypeDescr )
                   ? alloca( pReturnTypeDescr->nSize )
                   : pUnoReturn); // direct way
            pCppStack += sizeof(void *);
        }
    }
    // push this
    void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
        + aVtableSlot.offset;
    *(void**)pCppStack = pAdjustedThisPtr;
    pCppStack += sizeof( void* );

    const int nMaxParams = 32;
    // args
    void * args_buffer[3 * nMaxParams];
    void ** pCppArgs  = (void **)(nParams > nMaxParams ? rtl_allocateMemory( 3 * sizeof(void *) * nParams ) : args_buffer);
    // indizes of values this have to be converted (interface conversion cpp<=>uno)
    sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
    // type descriptions for reconversions
    typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));

      sal_Int32 nTempIndizes   = 0;

    const int nTempBufferSize = 256;
    sal_Int32 nTempBufferPos = 0;
    long params_buffer[nTempBufferSize];<--- Variable 'params_buffer' is not assigned a value

      for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
      {
        const typelib_MethodParameter & rParam = pParams[nPos];
        typelib_TypeDescription * pParamTypeDescr = 0;
        TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );

        if (!rParam.bOut
            && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
        {
            pCppArgs[ nPos ] = pCppStack;
            uno_copyAndConvertData( pCppArgs[nPos], pUnoArgs[nPos], pParamTypeDescr,
                                    pThis->getBridge()->getUno2Cpp() );

            switch (pParamTypeDescr->eTypeClass)
            {
            case typelib_TypeClass_HYPER:
            case typelib_TypeClass_UNSIGNED_HYPER:
            case typelib_TypeClass_DOUBLE:
                pCppStack += sizeof(sal_Int32); // extra long
            }
            // no longer needed
            TYPELIB_DANGER_RELEASE( pParamTypeDescr );
        }
        else // ptr to complex value | ref
        {
            if (! rParam.bIn) // is pure out
            {
                // cpp out is constructed mem, uno out is not!
                if (pParamTypeDescr->nSize > (sizeof(long) * (nTempBufferSize - nTempBufferPos)))
                {
                    uno_constructData(
                        *(void **)pCppStack = pCppArgs[nPos] = rtl_allocateMemory( pParamTypeDescr->nSize ),
                        pParamTypeDescr );
                    pTempIndizes[nTempIndizes] = nPos | 0x80000000; // default constructed for cpp call
                }
                else
                {
                    uno_constructData(
                        *(void **)pCppStack = pCppArgs[nPos] = (params_buffer + nTempBufferPos),
                        pParamTypeDescr );
                    pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
                    nTempBufferPos += (pParamTypeDescr->nSize / sizeof(long)) +1;
                }
                // will be released at reconversion
                ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
            }
            // is in/inout
            else if (bridges::cpp_uno::shared::relatesToInterfaceType(
                         pParamTypeDescr ))
            {
                if (pParamTypeDescr->nSize > (sizeof(long)*(nTempBufferSize - nTempBufferPos)))
                {
                    uno_copyAndConvertData(
                        *(void **)pCppStack = pCppArgs[nPos] = rtl_allocateMemory( pParamTypeDescr->nSize ),
                        pUnoArgs[nPos], pParamTypeDescr,
                        pThis->getBridge()->getUno2Cpp() );
                    pTempIndizes[nTempIndizes] = nPos | 0x80000000; // has to be reconverted
                }
                else
                {
                    uno_copyAndConvertData(
                        *(void **)pCppStack = pCppArgs[nPos] = (params_buffer + nTempBufferPos),
                        pUnoArgs[nPos], pParamTypeDescr,
                        pThis->getBridge()->getUno2Cpp() );
                    pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
                    nTempBufferPos += (pParamTypeDescr->nSize / sizeof(long)) +1;
                }
                // will be released at reconversion
                ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
            }
            else // direct way
            {
                *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
                // no longer needed
                TYPELIB_DANGER_RELEASE( pParamTypeDescr );
            }
        }
        pCppStack += sizeof(sal_Int32); // standard parameter length
      }

     try
      {
        int nStackLongs = (pCppStack - pCppStackStart)/sizeof(sal_Int32);
        if( nStackLongs & 1 )
            // stack has to be 8 byte aligned
            nStackLongs++;

        callVirtualMethod(
            pAdjustedThisPtr, aVtableSlot.index,
            pCppReturn,
            pReturnTypeDescr->eTypeClass,
            (sal_Int32 *)pCppStackStart,
            nStackLongs
            );

        // NO exception occurred...
        *ppUnoExc = 0;

        // reconvert temporary params
        for ( ; nTempIndizes--; )
        {
            sal_Int32 nIndex = pTempIndizes[nTempIndizes];
            sal_Bool bAllocated = (nIndex & 0x80000000) != 0;
            nIndex &= 0x7fffffff;
            typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];

            if (pParams[nIndex].bIn)
            {
                if (pParams[nIndex].bOut) // inout
                {
                    uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
                    uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
                                            pThis->getBridge()->getCpp2Uno() );
                }
            }
            else // pure out
            {
                uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
                                        pThis->getBridge()->getCpp2Uno() );
            }
            // destroy temp cpp param => cpp: every param was constructed
            uno_destructData(
                pCppArgs[nIndex], pParamTypeDescr,
                reinterpret_cast< uno_ReleaseFunc >(cpp_release) );

            if (bAllocated)
                rtl_freeMemory( pCppArgs[nIndex] );
            TYPELIB_DANGER_RELEASE( pParamTypeDescr );
        }
        // return value
        if (pCppReturn && pUnoReturn != pCppReturn)
        {
            uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
                                    pThis->getBridge()->getCpp2Uno() );
            uno_destructData(
                pCppReturn, pReturnTypeDescr,
                reinterpret_cast< uno_ReleaseFunc >(cpp_release) );
        }
     }
     catch( ... )
     {
        void* pExc = __Crun::ex_get();
        const char* pName = __Cimpl::ex_name();

        // get exception
        CPPU_CURRENT_NAMESPACE::cc50_solaris_intel_fillUnoException(
            pExc, pName, *ppUnoExc,
            pThis->getBridge()->getCpp2Uno());

        // temporary params
        for ( ; nTempIndizes--; )
        {
            sal_Int32 nIndex = pTempIndizes[nTempIndizes];
            sal_Bool bAllocated = (nIndex & 0x80000000) != 0;
            nIndex &= 0x7fffffff;
            // destroy temp cpp param => cpp: every param was constructed
            uno_destructData(
                pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes],
                reinterpret_cast< uno_ReleaseFunc >(cpp_release) );
            if (bAllocated)
                rtl_freeMemory( pCppArgs[nIndex] );
            TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
        }
        // return type
        if (pReturnTypeDescr)
            TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
      }

    if (pCppArgs != (void **)args_buffer)
        rtl_freeMemory( pCppArgs );
    if (pReturnSpace)
        rtl_freeMemory( pReturnSpace );
}

}

namespace bridges { namespace cpp_uno { namespace shared {

void unoInterfaceProxyDispatch(
    uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
    void * pReturn, void * pArgs[], uno_Any ** ppException )
{
    // is my surrogate
    bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
        = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
    typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;

    switch (pMemberDescr->eTypeClass)
    {
    case typelib_TypeClass_INTERFACE_ATTRIBUTE:
    {
        VtableSlot aVtableSlot(
            getVtableSlot(
                reinterpret_cast<
                    typelib_InterfaceAttributeTypeDescription const * >(
                        pMemberDescr)));
        if (pReturn)
        {
            // dependent dispatch
            cpp_call(
                pThis, aVtableSlot,
                ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
                0, 0, // no params
                pReturn, pArgs, ppException );
        }
        else
        {
            // is SET
            typelib_MethodParameter aParam;
            aParam.pTypeRef =
                ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
            aParam.bIn      = sal_True;
            aParam.bOut     = sal_False;

            typelib_TypeDescriptionReference * pReturnTypeRef = 0;
            OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
            typelib_typedescriptionreference_new(
                &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );

            // dependent dispatch
            aVtableSlot.index += 1; // get, then set method
            cpp_call(
                pThis, aVtableSlot,
                pReturnTypeRef,
                1, &aParam,
                pReturn, pArgs, ppException );

            typelib_typedescriptionreference_release( pReturnTypeRef );
        }

        break;
    }
    case typelib_TypeClass_INTERFACE_METHOD:
    {
        VtableSlot aVtableSlot(
            getVtableSlot(
                reinterpret_cast<
                    typelib_InterfaceMethodTypeDescription const * >(
                        pMemberDescr)));
        switch (aVtableSlot.index)
        {
            // standard calls
        case 1: // acquire uno interface
            (*pUnoI->acquire)( pUnoI );
            *ppException = 0;
            break;
        case 2: // release uno interface
            (*pUnoI->release)( pUnoI );
            *ppException = 0;
            break;
        case 0: // queryInterface() opt
        {
            typelib_TypeDescription * pTD = 0;
            TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
            if (pTD)
            {
                uno_Interface * pInterface = 0;
                (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
                    pThis->pBridge->getUnoEnv(),
                    (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );

                if (pInterface)
                {
                    ::uno_any_construct(
                        reinterpret_cast< uno_Any * >( pReturn ),
                        &pInterface, pTD, 0 );
                    (*pInterface->release)( pInterface );
                    TYPELIB_DANGER_RELEASE( pTD );
                    *ppException = 0;
                    break;
                }
                TYPELIB_DANGER_RELEASE( pTD );
            }
        } // else perform queryInterface()
        default:
            // dependent dispatch
            cpp_call(
                pThis, aVtableSlot,
                ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
                ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
                ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
                pReturn, pArgs, ppException );
        }
        break;
    }
    default:
    {
        ::com::sun::star::uno::RuntimeException aExc(
            OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
            ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );

        Type const & rExcType = ::getCppuType( &aExc );
        // binary identical null reference
        ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
    }
    }
}

} } }

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