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::Sequence;
  28 using com::sun::star::uno::Type;
  29 using com::sun::star::uno::Reference;
  30 using com::sun::star::uno::XInterface;
  31 using com::sun::star::uno::TypeDescription;
  32
  33 namespace pyuno
  34 {
  35
  36 void raisePyExceptionWithAny( const com::sun::star::uno::Any &anyExc )
  37 {
  38     try
  39     {
  40         Runtime runtime;
  41         PyRef exc = runtime.any2PyObject( anyExc );
  42         if( exc.is() )
  43         {
  44             PyRef type( getClass( anyExc.getValueType().getTypeName(),runtime ) );
  45             PyErr_SetObject( type.get(), exc.get());
  46         }
  47         else
  48         {
  49             com::sun::star::uno::Exception e;
  50             anyExc >>= e;
  51
  52             OUStringBuffer buf;
  53             buf.appendAscii( "Couldn't convert uno exception to a python exception (" );
  54             buf.append(anyExc.getValueType().getTypeName());
  55             buf.appendAscii( ": " );
  56             buf.append(e.Message );
  57             buf.appendAscii( ")" );
  58             PyErr_SetString(
  59                 PyExc_SystemError,
  60                 OUStringToOString(buf.makeStringAndClear(),RTL_TEXTENCODING_ASCII_US).getStr() );
  61         }
  62     }
  63     catch(const com::sun::star::lang::IllegalArgumentException & e)
  64     {
  65         PyErr_SetString( PyExc_SystemError,
  66                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  67     }
  68     catch(const com::sun::star::script::CannotConvertException & e)
  69     {
  70         PyErr_SetString( PyExc_SystemError,
  71                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  72     }
  73     catch(const RuntimeException & e)
  74     {
  75         PyErr_SetString( PyExc_SystemError,
  76                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  77     }
  78 }
  79
  80
  81 static PyRef createClass( const OUString & name, const Runtime &runtime )
  82     throw ( RuntimeException )
  83 {
  84     // assuming that this is never deleted !
  85     // note I don't have the knowledge how to initialize these type objects correctly !
  86     TypeDescription desc( name );
  87     if( ! desc.is() )
  88     {
  89         OUStringBuffer buf;
  90         buf.appendAscii( "pyuno.getClass: uno exception " );
  91         buf.append(name).appendAscii( " is unknown" );
  92         throw RuntimeException( buf.makeStringAndClear(), Reference< XInterface > () );
  93     }
  94
  95     sal_Bool isStruct = desc.get()->eTypeClass == typelib_TypeClass_STRUCT;
  96     sal_Bool isExc = desc.get()->eTypeClass == typelib_TypeClass_EXCEPTION;
  97     sal_Bool isInterface = desc.get()->eTypeClass == typelib_TypeClass_INTERFACE;
  98     if( !isStruct  && !isExc && ! isInterface )
  99     {
 100         OUStringBuffer buf;
 101         buf.appendAscii( "pyuno.getClass: " ).append(name).appendAscii( "is a " );
 102         buf.appendAscii(
 103             typeClassToString( (com::sun::star::uno::TypeClass) desc.get()->eTypeClass));
 104         buf.appendAscii( ", expected EXCEPTION, STRUCT or INTERFACE" );
 105         throw RuntimeException( buf.makeStringAndClear(), Reference< XInterface>() );
 106     }
 107
 108     // retrieve base class
 109     PyRef base;
 110     if( isInterface )
 111     {
 112         typelib_InterfaceTypeDescription *pDesc = (typelib_InterfaceTypeDescription * )desc.get();
 113         if( pDesc->pBaseTypeDescription )
 114         {
 115             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 116         }
 117         else
 118         {
 119             // must be XInterface !
 120         }
 121     }
 122     else
 123     {
 124         typelib_CompoundTypeDescription *pDesc = (typelib_CompoundTypeDescription*)desc.get();
 125         if( pDesc->pBaseTypeDescription )
 126         {
 127             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 128         }
 129         else
 130         {
 131             if( isExc )
 132                 // we are currently creating the root UNO exception
 133                 base = PyRef(PyExc_Exception);
 134         }
 135     }
 136     PyRef args( PyTuple_New( 3 ), SAL_NO_ACQUIRE );
 137
 138     PyRef pyTypeName = ustring2PyString( name /*.replace( '.', '_' )*/ );
 139
 140     PyRef bases;
 141     if( base.is() )
 142     {
 143         { // for CC, keeping ref-count being 1
 144         bases = PyRef( PyTuple_New( 1 ), SAL_NO_ACQUIRE );
 145         }
 146         PyTuple_SetItem( bases.get(), 0 , base.getAcquired() );
 147     }
 148     else
 149     {
 150         bases = PyRef( PyTuple_New( 0 ), SAL_NO_ACQUIRE );
 151     }
 152
 153     PyTuple_SetItem( args.get(), 0, pyTypeName.getAcquired());
 154     PyTuple_SetItem( args.get(), 1, bases.getAcquired() );
 155     PyTuple_SetItem( args.get(), 2, PyDict_New() );
 156
 157     PyRef ret(
 158         PyObject_CallObject(reinterpret_cast<PyObject *>(&PyType_Type) , args.get()),
 159         SAL_NO_ACQUIRE );
 160
 161     // now overwrite ctor and attrib functions
 162     if( isInterface )
 163     {
 164         PyObject_SetAttrString(
 165             ret.get(), "__pyunointerface__",
 166             ustring2PyString(name).get() );
 167     }
 168     else
 169     {
 170         PyRef ctor = getObjectFromUnoModule( runtime,"_uno_struct__init__" );
 171         PyRef setter = getObjectFromUnoModule( runtime,"_uno_struct__setattr__" );
 172         PyRef getter = getObjectFromUnoModule( runtime,"_uno_struct__getattr__" );
 173         PyRef repr = getObjectFromUnoModule( runtime,"_uno_struct__repr__" );
 174         PyRef eq = getObjectFromUnoModule( runtime,"_uno_struct__eq__" );
 175
 176         PyObject_SetAttrString(
 177             ret.get(), "__pyunostruct__",
 178             ustring2PyString(name).get() );
 179         PyObject_SetAttrString(
 180             ret.get(), "typeName",
 181             ustring2PyString(name).get() );
 182         PyObject_SetAttrString(
 183             ret.get(), "__init__", ctor.get() );
 184         PyObject_SetAttrString(
 185             ret.get(), "__getattr__", getter.get() );
 186         PyObject_SetAttrString(
 187             ret.get(), "__setattr__", setter.get() );
 188         PyObject_SetAttrString(
 189             ret.get(), "__repr__", repr.get() );
 190         PyObject_SetAttrString(
 191             ret.get(), "__str__", repr.get() );
 192         PyObject_SetAttrString(
 193             ret.get(), "__eq__", eq.get() );
 194     }
 195     return ret;
 196 }
 197
 198 bool isInstanceOfStructOrException( PyObject *obj)
 199 {
 200     PyRef attr(
 201         PyObject_GetAttrString(obj, "__class__"),
 202         SAL_NO_ACQUIRE );
 203     if(attr.is())
 204         return PyObject_HasAttrString(attr.get(), "__pyunostruct__");
 205     else
 206         return false;
 207 }
 208
 209 sal_Bool isInterfaceClass( const Runtime &runtime, PyObject * obj )
 210 {
 211     const ClassSet & set = runtime.getImpl()->cargo->interfaceSet;
 212     return set.find( obj ) != set.end();
 213 }
 214
 215 PyRef getClass( const OUString & name , const Runtime &runtime)
 216 {
 217     PyRef ret;
 218
 219     RuntimeCargo *cargo =runtime.getImpl()->cargo;
 220     ExceptionClassMap::iterator ii = cargo->exceptionMap.find( name );
 221     if( ii == cargo->exceptionMap.end() )
 222     {
 223         ret = createClass( name, runtime );
 224         cargo->exceptionMap[name] = ret;
 225         if( PyObject_HasAttrString(
 226                 ret.get(), "__pyunointerface__" ) )
 227             cargo->interfaceSet.insert( ret );
 228
 229         PyObject_SetAttrString(
 230             ret.get(), "__pyunointerface__",
 231             ustring2PyString(name).get() );
 232     }
 233     else
 234     {
 235         ret = ii->second;
 236     }
 237
 238     return ret;
 239 }
 240
 241
 242 }
 243
 244 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */