pyuno/source/module/pyuno_except.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #include "pyuno_impl.hxx"
  20
  21 #include <rtl/ustrbuf.hxx>
  22
  23 #include <typelib/typedescription.hxx>
  24
  25
  26 using com::sun::star::uno::RuntimeException;
  27 using com::sun::star::uno::XInterface;
  28 using com::sun::star::uno::TypeDescription;
  29
  30 namespace pyuno
  31 {
  32
  33 void raisePyExceptionWithAny( const css::uno::Any &anyExc )
  34 {
  35     try
  36     {
  37         Runtime runtime;
  38         PyRef exc = runtime.any2PyObject( anyExc );
  39         if( exc.is() )
  40         {
  41             PyRef type( getClass( anyExc.getValueType().getTypeName(),runtime ) );
  42             PyErr_SetObject( type.get(), exc.get());
  43         }
  44         else
  45         {
  46             css::uno::Exception e;
  47             anyExc >>= e;
  48
  49             OUStringBuffer buf;
  50             buf.append( "Couldn't convert uno exception to a python exception (" );
  51             buf.append(anyExc.getValueType().getTypeName());
  52             buf.append( ": " );
  53             buf.append(e.Message );
  54             buf.append( ")" );
  55             PyErr_SetString(
  56                 PyExc_SystemError,
  57                 OUStringToOString(buf.makeStringAndClear(),RTL_TEXTENCODING_ASCII_US).getStr() );
  58         }
  59     }
  60     catch(const css::lang::IllegalArgumentException & e)
  61     {
  62         PyErr_SetString( PyExc_SystemError,
  63                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  64     }
  65     catch(const css::script::CannotConvertException & e)
  66     {
  67         PyErr_SetString( PyExc_SystemError,
  68                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  69     }
  70     catch(const RuntimeException & e)
  71     {
  72         PyErr_SetString( PyExc_SystemError,
  73                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  74     }
  75 }
  76
  77
  78 static PyRef createClass( const OUString & name, const Runtime &runtime )
  79     throw ( RuntimeException )
  80 {
  81     // assuming that this is never deleted !
  82     // note I don't have the knowledge how to initialize these type objects correctly !
  83     TypeDescription desc( name );
  84     if( ! desc.is() )
  85     {
  86         OUStringBuffer buf;
  87         buf.append( "pyuno.getClass: uno exception " );
  88         buf.append(name).append( " is unknown" );
  89         throw RuntimeException( buf.makeStringAndClear() );
  90     }
  91
  92     bool isStruct = desc.get()->eTypeClass == typelib_TypeClass_STRUCT;
  93     bool isExc = desc.get()->eTypeClass == typelib_TypeClass_EXCEPTION;
  94     bool isInterface = desc.get()->eTypeClass == typelib_TypeClass_INTERFACE;
  95     if( !isStruct  && !isExc && ! isInterface )
  96     {
  97         OUStringBuffer buf;
  98         buf.append( "pyuno.getClass: " ).append(name).append( "is a " );
  99         buf.appendAscii(
 100             typeClassToString( (css::uno::TypeClass) desc.get()->eTypeClass));
 101         buf.append( ", expected EXCEPTION, STRUCT or INTERFACE" );
 102         throw RuntimeException( buf.makeStringAndClear() );
 103     }
 104
 105     // retrieve base class
 106     PyRef base;
 107     if( isInterface )
 108     {
 109         typelib_InterfaceTypeDescription *pDesc = reinterpret_cast<typelib_InterfaceTypeDescription *>(desc.get());
 110         if( pDesc->pBaseTypeDescription )
 111         {
 112             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 113         }
 114         else
 115         {
 116             // must be XInterface !
 117         }
 118     }
 119     else
 120     {
 121         typelib_CompoundTypeDescription *pDesc = reinterpret_cast<typelib_CompoundTypeDescription*>(desc.get());
 122         if( pDesc->pBaseTypeDescription )
 123         {
 124             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 125         }
 126         else
 127         {
 128             if( isExc )
 129                 // we are currently creating the root UNO exception
 130                 base = PyRef(PyExc_Exception);
 131         }
 132     }
 133     PyRef args( PyTuple_New( 3 ), SAL_NO_ACQUIRE, NOT_NULL );
 134
 135     PyRef pyTypeName = ustring2PyString( name /*.replace( '.', '_' )*/ );
 136
 137     PyRef bases;
 138     if( base.is() )
 139     {
 140         { // for CC, keeping ref-count being 1
 141         bases = PyRef( PyTuple_New( 1 ), SAL_NO_ACQUIRE );
 142         }
 143         PyTuple_SetItem( bases.get(), 0 , base.getAcquired() );
 144     }
 145     else
 146     {
 147         bases = PyRef( PyTuple_New( 0 ), SAL_NO_ACQUIRE );
 148     }
 149
 150     PyTuple_SetItem( args.get(), 0, pyTypeName.getAcquired());
 151     PyTuple_SetItem( args.get(), 1, bases.getAcquired() );
 152     PyTuple_SetItem( args.get(), 2, PyDict_New() );
 153
 154     PyRef ret(
 155         PyObject_CallObject(reinterpret_cast<PyObject *>(&PyType_Type) , args.get()),
 156         SAL_NO_ACQUIRE );
 157
 158     // now overwrite ctor and attrib functions
 159     if( isInterface )
 160     {
 161         PyObject_SetAttrString(
 162             ret.get(), "__pyunointerface__",
 163             ustring2PyString(name).get() );
 164     }
 165     else
 166     {
 167         PyRef ctor = getObjectFromUnoModule( runtime,"_uno_struct__init__" );
 168         PyRef setter = getObjectFromUnoModule( runtime,"_uno_struct__setattr__" );
 169         PyRef getter = getObjectFromUnoModule( runtime,"_uno_struct__getattr__" );
 170         PyRef repr = getObjectFromUnoModule( runtime,"_uno_struct__repr__" );
 171         PyRef eq = getObjectFromUnoModule( runtime,"_uno_struct__eq__" );
 172
 173         PyObject_SetAttrString(
 174             ret.get(), "__pyunostruct__",
 175             ustring2PyString(name).get() );
 176         PyObject_SetAttrString(
 177             ret.get(), "typeName",
 178             ustring2PyString(name).get() );
 179         PyObject_SetAttrString(
 180             ret.get(), "__init__", ctor.get() );
 181         PyObject_SetAttrString(
 182             ret.get(), "__getattr__", getter.get() );
 183         PyObject_SetAttrString(
 184             ret.get(), "__setattr__", setter.get() );
 185         PyObject_SetAttrString(
 186             ret.get(), "__repr__", repr.get() );
 187         PyObject_SetAttrString(
 188             ret.get(), "__str__", repr.get() );
 189         PyObject_SetAttrString(
 190             ret.get(), "__eq__", eq.get() );
 191     }
 192     return ret;
 193 }
 194
 195 bool isInstanceOfStructOrException( PyObject *obj)
 196 {
 197     PyRef attr(
 198         PyObject_GetAttrString(obj, "__class__"),
 199         SAL_NO_ACQUIRE );
 200     if(attr.is())
 201         return PyObject_HasAttrString(attr.get(), "__pyunostruct__");
 202     else
 203         return false;
 204 }
 205
 206 bool isInterfaceClass( const Runtime &runtime, PyObject * obj )
 207 {
 208     const ClassSet & set = runtime.getImpl()->cargo->interfaceSet;
 209     return set.find( obj ) != set.end();
 210 }
 211
 212 PyRef getClass( const OUString & name , const Runtime &runtime)
 213 {
 214     PyRef ret;
 215
 216     RuntimeCargo *cargo =runtime.getImpl()->cargo;
 217     ExceptionClassMap::iterator ii = cargo->exceptionMap.find( name );
 218     if( ii == cargo->exceptionMap.end() )
 219     {
 220         ret = createClass( name, runtime );
 221         cargo->exceptionMap[name] = ret;
 222         if( PyObject_HasAttrString(
 223                 ret.get(), "__pyunointerface__" ) )
 224             cargo->interfaceSet.insert( ret );
 225
 226         PyObject_SetAttrString(
 227             ret.get(), "__pyunointerface__",
 228             ustring2PyString(name).get() );
 229     }
 230     else
 231     {
 232         ret = ii->second;
 233     }
 234
 235     return ret;
 236 }
 237
 238
 239 }
 240
 241 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */