602 lines
20 KiB
C++
602 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <exception>
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#include <malloc.h>
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#include <typeinfo>
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#include <com/sun/star/uno/Exception.hpp>
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#include <com/sun/star/uno/RuntimeException.hpp>
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#include <com/sun/star/uno/genfunc.hxx>
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#include <o3tl/runtimetooustring.hxx>
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#include <uno/data.h>
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#include "bridge.hxx"
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#include "types.hxx"
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#include "unointerfaceproxy.hxx"
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#include "vtables.hxx"
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#include "share.hxx"
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//#define BRDEBUG
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#ifdef BRDEBUG
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#include <stdio.h>
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#endif
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using namespace ::com::sun::star::uno;
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namespace
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{
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static void callVirtualMethod(
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void * pAdjustedThisPtr,
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sal_Int32 nVtableIndex,
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void * pRegisterReturn,
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typelib_TypeClass eReturnType,
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char * pPT,
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sal_Int32 * pStackLongs,
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sal_Int32 /*nStackLongs*/)
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{
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// parameter list is mixed list of * and values
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// reference parameters are pointers
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unsigned long * mfunc; // actual function to be invoked
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void (*ptr)();
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int gpr[4]; // storage for gpregisters, map to a0-a3
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int off; // offset used to find function
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int nw; // number of words mapped
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long *p; // pointer to parameter overflow area
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int iret, iret2; // temporary function return values
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// never called
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if (! pAdjustedThisPtr ) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
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#ifdef BRDEBUG
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fprintf(stderr,"in CallVirtualMethod\n");
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#endif
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// Because of the MIPS O32 calling conventions we could be passing
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// parameters in both register types and on the stack. To create the
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// stack parameter area we need we now simply allocate local
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// variable storage param[] that is at least the size of the parameter stack
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// (more than enough space) which we can overwrite the parameters into.
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/* p = sp - 512; new sp will be p - 16, but we don't change sp
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* at this time to avoid breaking ABI--not sure whether changing sp will break
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* references to local variables. For the same reason, we use absolute value.
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*/
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__asm__ __volatile__ (
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"addiu $2,$29,-512\n\t"
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"move %0,$2\n\t"
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:"=r"(p): : "$2","$29" );
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#ifdef BRDEBUG
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if (nStackLongs * 4 > 512 )
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fprintf(stderr,"too many arguments");
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#endif
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// now begin to load the C++ function arguments into storage
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nw = 0;
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// now we need to parse the entire signature string */
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// until we get the END indicator */
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// treat complex return pointer like any other parameter
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#ifdef BRDEBUG
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fprintf(stderr,"overflow area pointer p=%p\n",p);
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/* Let's figure out what is really going on here*/
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fprintf(stderr,"callVirtualMethod parameters string is %s\n",pPT);
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int k = nStackLongs;
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long * q = (long *)pStackLongs;
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while (k > 0) {
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fprintf(stderr,"uno stack is: %x\n",(unsigned int)*q);
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k--;
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q++;
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}
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#endif
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/* parse the argument list up to the ending ) */
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while (*pPT != 'X') {
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int c = *pPT; // character of parameter type being decoded
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switch (c) {
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case 'D': /* type is double */
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/* treat the same as long long */
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case 'H': /* type is long long */
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if (nw & 1) nw++; /* note even elements gpr[] will map to
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odd registers*/
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if (nw < 4) {
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gpr[nw++] = *pStackLongs;
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gpr[nw++] = *(pStackLongs+1);
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} else {
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if (((long) p) & 4)
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p++;
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*p++ = *pStackLongs;
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*p++ = *(pStackLongs+1);
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}
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pStackLongs += 2;
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break;
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case 'S':
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if (nw < 4) {
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gpr[nw++] = *((unsigned short*)pStackLongs);
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} else {
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*p++ = *((unsigned short *)pStackLongs);
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}
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pStackLongs += 1;
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break;
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case 'B':
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if (nw < 4) {
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gpr[nw++] = *((char *)pStackLongs);
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} else {
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*p++ = *((char *)pStackLongs);
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}
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pStackLongs += 1;
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break;
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default:
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if (nw < 4) {
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gpr[nw++] = *pStackLongs;
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} else {
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*p++ = *pStackLongs;
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}
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pStackLongs += 1;
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break;
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}
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pPT++;
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}
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/* figure out the address of the function we need to invoke */
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off = nVtableIndex;
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off = off * 4; // 4 bytes per slot
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mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable
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mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset
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mfunc = *((unsigned long **)mfunc); // the function is stored at the address
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ptr = (void (*)())mfunc;
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#ifdef BRDEBUG
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fprintf(stderr,"calling function %p\n",mfunc);
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#endif
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/* Set up the machine registers and invoke the function */
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__asm__ __volatile__ (
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"lw $4, 0(%0)\n\t"
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"lw $5, 4(%0)\n\t"
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"lw $6, 8(%0)\n\t"
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"lw $7, 12(%0)\n\t"
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: : "r" (gpr)
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: "$4", "$5", "$6", "$7"
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);
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__asm__ __volatile__ ("addiu $29,$29,-528\r\n":::"$29");
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(*ptr)();
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__asm__ __volatile__ ("addiu $29,$29,528\r\n":::"$29");
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__asm__ __volatile__ (
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"sw $2,%0 \n\t"
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"sw $3,%1 \n\t"
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: "=m" (iret), "=m" (iret2) : );
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register float fret asm("$f0");
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register double dret asm("$f0");
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switch( eReturnType )
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{
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case typelib_TypeClass_HYPER:
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case typelib_TypeClass_UNSIGNED_HYPER:
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((long*)pRegisterReturn)[1] = iret2; // fall through
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case typelib_TypeClass_LONG:
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case typelib_TypeClass_UNSIGNED_LONG:
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case typelib_TypeClass_ENUM:
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((long*)pRegisterReturn)[0] = iret;
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break;
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case typelib_TypeClass_CHAR:
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case typelib_TypeClass_SHORT:
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case typelib_TypeClass_UNSIGNED_SHORT:
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*(unsigned short*)pRegisterReturn = (unsigned short)iret;
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break;
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case typelib_TypeClass_BOOLEAN:
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case typelib_TypeClass_BYTE:
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*(unsigned char*)pRegisterReturn = (unsigned char)iret;
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break;
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case typelib_TypeClass_FLOAT:
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*(float*)pRegisterReturn = fret;
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break;
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case typelib_TypeClass_DOUBLE:
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*(double*)pRegisterReturn = dret;
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break;
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default:
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break;
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}
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}
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static void cpp_call(
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bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
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bridges::cpp_uno::shared::VtableSlot aVtableSlot,
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typelib_TypeDescriptionReference * pReturnTypeRef,
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sal_Int32 nParams, typelib_MethodParameter * pParams,
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void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
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{
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// max space for: [complex ret ptr], values|ptr ...
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char * pCppStack =
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(char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
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char * pCppStackStart = pCppStack;
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// need to know parameter types for callVirtualMethod so generate a signature string
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char * pParamType = (char *) alloca(nParams+2);
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char * pPT = pParamType;
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#ifdef BRDEBUG
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fprintf(stderr,"in cpp_call\n");
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#endif
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// return
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typelib_TypeDescription * pReturnTypeDescr = 0;
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TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
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// assert(pReturnTypeDescr);
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void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
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if (pReturnTypeDescr)
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{
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if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
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{
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pCppReturn = pUnoReturn; // direct way for simple types
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}
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else
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{
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// complex return via ptr
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pCppReturn = *(void **)pCppStack =
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(bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )
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? alloca( pReturnTypeDescr->nSize ): pUnoReturn); // direct way
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*pPT++ = 'I'; //signify that a complex return type on stack
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pCppStack += sizeof(void *);
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}
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}
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// push this
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void* pAdjustedThisPtr = reinterpret_cast< void **>(pThis->getCppI()) + aVtableSlot.offset;
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*(void**)pCppStack = pAdjustedThisPtr;
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pCppStack += sizeof( void* );
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*pPT++ = 'I';
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// stack space
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// static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!");
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// args
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void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
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// indices of values this have to be converted (interface conversion cpp<=>uno)
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sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams);
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// type descriptions for reconversions
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typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
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sal_Int32 nTempIndices = 0;
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for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
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{
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const typelib_MethodParameter & rParam = pParams[nPos];
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typelib_TypeDescription * pParamTypeDescr = 0;
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TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
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if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
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{
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uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
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pThis->getBridge()->getUno2Cpp() );
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switch (pParamTypeDescr->eTypeClass)
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{
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// we need to know type of each param so that we know whether to use
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// gpr or fpr to pass in parameters:
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// Key: I - int, long, pointer, etc means pass in gpr
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// B - byte value passed in gpr
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// S - short value passed in gpr
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// F - float value pass in fpr
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// D - double value pass in fpr
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// H - long long int pass in proper pairs of gpr (3,4) (5,6), etc
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// X - indicates end of parameter description string
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case typelib_TypeClass_LONG:
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case typelib_TypeClass_UNSIGNED_LONG:
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case typelib_TypeClass_ENUM:
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*pPT++ = 'I';
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break;
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case typelib_TypeClass_SHORT:
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case typelib_TypeClass_CHAR:
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case typelib_TypeClass_UNSIGNED_SHORT:
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*pPT++ = 'S';
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break;
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case typelib_TypeClass_BOOLEAN:
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case typelib_TypeClass_BYTE:
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*pPT++ = 'B';
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break;
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case typelib_TypeClass_FLOAT:
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*pPT++ = 'F';
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break;
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case typelib_TypeClass_DOUBLE:
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*pPT++ = 'D';
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pCppStack += sizeof(sal_Int32); // extra long
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break;
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case typelib_TypeClass_HYPER:
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case typelib_TypeClass_UNSIGNED_HYPER:
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*pPT++ = 'H';
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pCppStack += sizeof(sal_Int32); // extra long
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break;
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default:
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break;
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}
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// no longer needed
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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else // ptr to complex value | ref
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{
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if (! rParam.bIn) // is pure out
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{
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// cpp out is constructed mem, uno out is not!
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uno_constructData(
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*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
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pParamTypeDescr );
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pTempIndices[nTempIndices] = nPos; // default constructed for cpp call
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
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}
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// is in/inout
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else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr ))
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{
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uno_copyAndConvertData(
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*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
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pUnoArgs[nPos], pParamTypeDescr,
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pThis->getBridge()->getUno2Cpp() );
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pTempIndices[nTempIndices] = nPos; // has to be reconverted
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
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}
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else // direct way
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{
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*(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
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// no longer needed
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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// KBH: FIXME: is this the right way to pass these
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*pPT++='I';
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}
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pCppStack += sizeof(sal_Int32); // standard parameter length
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}
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// terminate the signature string
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*pPT++='X';
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*pPT=0;
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try
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{
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assert( !( (pCppStack - pCppStackStart ) & 3) && "UNALIGNED STACK !!! (Please DO panic)" );
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try {
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callVirtualMethod(
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pAdjustedThisPtr, aVtableSlot.index,
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pCppReturn, pReturnTypeDescr->eTypeClass, pParamType,
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(sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
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} catch (css::uno::Exception &) {
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throw;
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} catch (std::exception & e) {
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throw css::uno::RuntimeException(
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"C++ code threw " + o3tl::runtimeToOUString(typeid(e).name()) + ": "
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+ o3tl::runtimeToOUString(e.what()));
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} catch (...) {
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throw css::uno::RuntimeException("C++ code threw unknown exception");
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}
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// NO exception occurred...
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*ppUnoExc = 0;
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// reconvert temporary params
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for ( ; nTempIndices--; )
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{
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sal_Int32 nIndex = pTempIndices[nTempIndices];
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typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices];
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if (pParams[nIndex].bIn)
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{
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if (pParams[nIndex].bOut) // inout
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{
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uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
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uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
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pThis->getBridge()->getCpp2Uno() );
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}
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}
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else // pure out
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{
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uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
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pThis->getBridge()->getCpp2Uno() );
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}
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// destroy temp cpp param => cpp: every param was constructed
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uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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// return value
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if (pCppReturn && pUnoReturn != pCppReturn)
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{
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uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
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pThis->getBridge()->getCpp2Uno() );
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uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
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}
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}
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catch (...)
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{
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// fill uno exception
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CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno());
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// temporary params
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for ( ; nTempIndices--; )
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{
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sal_Int32 nIndex = pTempIndices[nTempIndices];
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// destroy temp cpp param => cpp: every param was constructed
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uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices], cpp_release );
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TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
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}
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// return type
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if (pReturnTypeDescr)
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TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
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}
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}
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}
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namespace bridges::cpp_uno::shared {
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void unoInterfaceProxyDispatch(
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uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
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void * pReturn, void * pArgs[], uno_Any ** ppException )
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{
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// is my surrogate
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bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
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= static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy *> (pUnoI);
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//typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;
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#ifdef BRDEBUG
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fprintf(stderr,"in dispatch\n");
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#endif
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switch (pMemberDescr->eTypeClass)
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{
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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{
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VtableSlot aVtableSlot(
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getVtableSlot(
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reinterpret_cast<
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typelib_InterfaceAttributeTypeDescription const * >(
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pMemberDescr)));
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|
|
|
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("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(
|
|
"illegal member type description!",
|
|
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
|
|
|
|
Type const & rExcType = cppu::UnoType<decltype(aExc)>::get();
|
|
// binary identical null reference
|
|
::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|