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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_bridges.hxx"
30 
31 #include <stdio.h>
32 #include <dlfcn.h>
33 #include <cxxabi.h>
34 #include <hash_map>
35 
36 #include <rtl/strbuf.hxx>
37 #include <rtl/ustrbuf.hxx>
38 #include <osl/diagnose.h>
39 #include <osl/mutex.hxx>
40 
41 #include <com/sun/star/uno/genfunc.hxx>
42 #include <typelib/typedescription.hxx>
43 #include <uno/any2.h>
44 
45 #include "share.hxx"
46 
47 
48 using namespace ::std;
49 using namespace ::osl;
50 using namespace ::rtl;
51 using namespace ::com::sun::star::uno;
52 using namespace ::__cxxabiv1;
53 
54 
55 namespace CPPU_CURRENT_NAMESPACE
56 {
57 
58 void dummy_can_throw_anything( char const * )
59 {
60 }
61 
62 //==================================================================================================
63 static OUString toUNOname( char const * p ) SAL_THROW( () )
64 {
65 #ifdef DEBUG
66     char const * start = p;
67 #endif
68 
69     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
70 
71 	OUStringBuffer buf( 64 );
72     OSL_ASSERT( 'N' == *p );
73     ++p; // skip N
74 
75     while ('E' != *p)
76     {
77         // read chars count
78         long n = (*p++ - '0');
79         while ('0' <= *p && '9' >= *p)
80         {
81             n *= 10;
82             n += (*p++ - '0');
83         }
84         buf.appendAscii( p, n );
85         p += n;
86         if ('E' != *p)
87             buf.append( (sal_Unicode)'.' );
88     }
89 
90 #ifdef DEBUG
91     OUString ret( buf.makeStringAndClear() );
92     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
93     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
94     return ret;
95 #else
96     return buf.makeStringAndClear();
97 #endif
98 }
99 
100 //==================================================================================================
101 class RTTI
102 {
103     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
104 
105     Mutex m_mutex;
106 	t_rtti_map m_rttis;
107     t_rtti_map m_generatedRttis;
108 
109     void * m_hApp;
110 
111 public:
112     RTTI() SAL_THROW( () );
113     ~RTTI() SAL_THROW( () );
114 
115     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
116 };
117 //__________________________________________________________________________________________________
118 RTTI::RTTI() SAL_THROW( () )
119     : m_hApp( dlopen( 0, RTLD_LAZY ) )
120 {
121 }
122 //__________________________________________________________________________________________________
123 RTTI::~RTTI() SAL_THROW( () )
124 {
125     dlclose( m_hApp );
126 }
127 
128 //__________________________________________________________________________________________________
129 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
130 {
131     type_info * rtti;
132 
133     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
134 
135     MutexGuard guard( m_mutex );
136     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
137     if (iFind == m_rttis.end())
138     {
139         // RTTI symbol
140         OStringBuffer buf( 64 );
141         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
142         sal_Int32 index = 0;
143         do
144         {
145             OUString token( unoName.getToken( 0, '.', index ) );
146             buf.append( token.getLength() );
147             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
148             buf.append( c_token );
149         }
150         while (index >= 0);
151         buf.append( 'E' );
152 
153         OString symName( buf.makeStringAndClear() );
154         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
155 
156         if (rtti)
157         {
158             pair< t_rtti_map::iterator, bool > insertion(
159                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
160             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
161         }
162         else
163         {
164             // try to lookup the symbol in the generated rtti map
165             t_rtti_map::const_iterator iiFind( m_generatedRttis.find( unoName ) );
166             if (iiFind == m_generatedRttis.end())
167             {
168                 // we must generate it !
169                 // symbol and rtti-name is nearly identical,
170                 // the symbol is prefixed with _ZTI
171                 char const * rttiName = symName.getStr() +4;
172 #ifdef DEBUG
173                 fprintf( stderr,"generated rtti for %s\n", rttiName );
174 #endif
175                 if (pTypeDescr->pBaseTypeDescription)
176                 {
177                     // ensure availability of base
178                     type_info * base_rtti = getRTTI(
179                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
180                     rtti = new __si_class_type_info(
181                         strdup( rttiName ), (__class_type_info *)base_rtti );
182                 }
183                 else
184                 {
185                     // this class has no base class
186                     rtti = new __class_type_info( strdup( rttiName ) );
187                 }
188 
189                 pair< t_rtti_map::iterator, bool > insertion(
190                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
191                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
192             }
193             else // taking already generated rtti
194             {
195                 rtti = iiFind->second;
196             }
197         }
198     }
199     else
200     {
201         rtti = iFind->second;
202     }
203 
204     return rtti;
205 }
206 
207 //--------------------------------------------------------------------------------------------------
208 static void deleteException( void * pExc )
209 {
210     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
211     typelib_TypeDescription * pTD = 0;
212     OUString unoName( toUNOname( header->exceptionType->name() ) );
213     ::typelib_typedescription_getByName( &pTD, unoName.pData );
214     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
215     if (pTD)
216     {
217 		::uno_destructData( pExc, pTD, cpp_release );
218 		::typelib_typedescription_release( pTD );
219 	}
220 }
221 
222 //==================================================================================================
223 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
224 {
225     void * pCppExc;
226     type_info * rtti;
227 
228     {
229     // construct cpp exception object
230 	typelib_TypeDescription * pTypeDescr = 0;
231 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
232     OSL_ASSERT( pTypeDescr );
233     if (! pTypeDescr)
234         terminate();
235 
236 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
237 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
238 
239 	// destruct uno exception
240 	::uno_any_destruct( pUnoExc, 0 );
241     // avoiding locked counts
242     static RTTI * s_rtti = 0;
243     if (! s_rtti)
244     {
245         MutexGuard guard( Mutex::getGlobalMutex() );
246         if (! s_rtti)
247         {
248 #ifdef LEAK_STATIC_DATA
249             s_rtti = new RTTI();
250 #else
251             static RTTI rtti_data;
252             s_rtti = &rtti_data;
253 #endif
254         }
255     }
256 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
257     TYPELIB_DANGER_RELEASE( pTypeDescr );
258     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
259     if (! rtti)
260         terminate();
261     }
262 
263 	__cxa_throw( pCppExc, rtti, deleteException );
264 }
265 
266 //==================================================================================================
267 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
268 {
269     OSL_ENSURE( header, "### no exception header!!!" );
270     if (! header)
271         terminate();
272 
273 	typelib_TypeDescription * pExcTypeDescr = 0;
274     OUString unoName( toUNOname( header->exceptionType->name() ) );
275 	::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
276     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
277     if (! pExcTypeDescr)
278         terminate();
279 
280     // construct uno exception any
281     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
282     ::typelib_typedescription_release( pExcTypeDescr );
283 }
284 
285 }
286 
287