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/* -*- 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 <stdio.h>
#include <string.h>
#include <dlfcn.h>
#include <cxxabi.h>
#include <rtl/strbuf.hxx>
#include <rtl/ustrbuf.hxx>
#include <osl/mutex.hxx>
#include <com/sun/star/uno/genfunc.hxx>
#include <typelib/typedescription.hxx>
#include <uno/any2.h>
#include <unordered_map>
#include "share.hxx"
using namespace ::std;
using namespace ::osl;
using namespace ::com::sun::star::uno;
using namespace ::__cxxabiv1;
namespace CPPU_CURRENT_NAMESPACE
{
void dummy_can_throw_anything( char const * )
{
}
static OUString toUNOname( char const * p )
{
#if OSL_DEBUG_LEVEL > 1
char const * start = p;
#endif
// example: N3com3sun4star4lang24IllegalArgumentExceptionE
OUStringBuffer buf( 64 );
assert( 'N' == *p );
++p; // skip N
while ('E' != *p)
{
// read chars count
long n = (*p++ - '0');
while ('0' <= *p && '9' >= *p)
{
n *= 10;
n += (*p++ - '0');
}
buf.appendAscii( p, n );
p += n;
if ('E' != *p)
buf.append( '.' );
}
#if OSL_DEBUG_LEVEL > 1
OUString ret( buf.makeStringAndClear() );
OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
return ret;
#else
return buf.makeStringAndClear();
#endif
}
class RTTI
{
typedef std::unordered_map< OUString, type_info * > t_rtti_map;
Mutex m_mutex;
t_rtti_map m_rttis;
t_rtti_map m_generatedRttis;
void * m_hApp;
public:
RTTI();
~RTTI();
type_info * getRTTI( typelib_CompoundTypeDescription * );
};
RTTI::RTTI()
: m_hApp( dlopen( 0, RTLD_LAZY ) )
{
}
RTTI::~RTTI()
{
dlclose( m_hApp );
}
type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr )
{
type_info * rtti;
OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
MutexGuard guard( m_mutex );
t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) );
if (iRttiFind == m_rttis.end())
{
// RTTI symbol
OStringBuffer buf( 64 );
buf.append( "_ZTIN" );
sal_Int32 index = 0;
do
{
OUString token( unoName.getToken( 0, '.', index ) );
buf.append( token.getLength() );
OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
buf.append( c_token );
}
while (index >= 0);
buf.append( 'E' );
OString symName( buf.makeStringAndClear() );
rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
if (rtti)
{
pair< t_rtti_map::iterator, bool > insertion(
m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
assert(insertion.second && "### inserting new rtti failed?!");
}
else
{
// try to lookup the symbol in the generated rtti map
t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
if (iFind == m_generatedRttis.end())
{
// we must generate it !
// symbol and rtti-name is nearly identical,
// the symbol is prefixed with _ZTI
char const * rttiName = symName.getStr() +4;
#if OSL_DEBUG_LEVEL > 1
fprintf( stderr,"generated rtti for %s\n", rttiName );
#endif
if (pTypeDescr->pBaseTypeDescription)
{
// ensure availability of base
type_info * base_rtti = getRTTI(
(typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
rtti = new __si_class_type_info(
strdup( rttiName ), (__class_type_info *)base_rtti );
}
else
{
// this class has no base class
rtti = new __class_type_info( strdup( rttiName ) );
}
pair< t_rtti_map::iterator, bool > insertion(
m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
assert(insertion.second && "### inserting new generated rtti failed?!");
}
else // taking already generated rtti
{
rtti = iFind->second;
}
}
}
else
{
rtti = iRttiFind->second;
}
return rtti;
}
static void deleteException( void * pExc )
{
__cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
typelib_TypeDescription * pTD = 0;
OUString unoName( toUNOname( header->exceptionType->name() ) );
::typelib_typedescription_getByName( &pTD, unoName.pData );
assert(pTD && "### unknown exception type! leaving out destruction => leaking!!!");
if (pTD)
{
::uno_destructData( pExc, pTD, cpp_release );
::typelib_typedescription_release( pTD );
}
}
void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
{
void * pCppExc;
type_info * rtti;
{
// construct cpp exception object
typelib_TypeDescription * pTypeDescr = 0;
TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
assert(pTypeDescr);
if (! pTypeDescr)
terminate();
pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
// destruct uno exception
::uno_any_destruct( pUnoExc, 0 );
// avoiding locked counts
static RTTI rtti_data;
rtti = (type_info*)rtti_data.getRTTI((typelib_CompoundTypeDescription*)pTypeDescr);
TYPELIB_DANGER_RELEASE( pTypeDescr );
if (! rtti)
terminate();
}
__cxa_throw( pCppExc, rtti, deleteException );
}
void fillUnoException(uno_Any * pExc, uno_Mapping * pCpp2Uno)
{
__cxa_exception * header = __cxa_get_globals()->caughtExceptions;
if (! header)
terminate();
std::type_info *exceptionType = __cxa_current_exception_type();
typelib_TypeDescription * pExcTypeDescr = 0;
OUString unoName( toUNOname( exceptionType->name() ) );
::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
if (! pExcTypeDescr)
terminate();
// construct uno exception any
::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
::typelib_typedescription_release( pExcTypeDescr );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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