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 <typelib/typedescription.hxx>
  22 #include <com/sun/star/script/CannotConvertException.hpp>
  23
  24
  25 using com::sun::star::uno::RuntimeException;
  26 using com::sun::star::uno::XInterface;
  27 using com::sun::star::uno::TypeDescription;
  28
  29 namespace pyuno
  30 {
  31
  32 void raisePyExceptionWithAny( const css::uno::Any &anyExc )
  33 {
  34     try
  35     {
  36         Runtime runtime;
  37         PyRef exc = runtime.any2PyObject( anyExc );
  38         if( exc.is() )
  39         {
  40             PyRef type( getClass( anyExc.getValueType().getTypeName(),runtime ) );
  41             PyErr_SetObject( type.get(), exc.get());
  42         }
  43         else
  44         {
  45             css::uno::Exception e;
  46             anyExc >>= e;
  47
  48             OUString buf = "Couldn't convert uno exception to a python exception (" +
  49                 anyExc.getValueType().getTypeName() + ": " + e.Message + ")";
  50             PyErr_SetString(
  51                 PyExc_SystemError,
  52                 OUStringToOString(buf,RTL_TEXTENCODING_ASCII_US).getStr() );
  53         }
  54     }
  55     catch(const css::lang::IllegalArgumentException & e)
  56     {
  57         PyErr_SetString( PyExc_SystemError,
  58                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  59     }
  60     catch(const css::script::CannotConvertException & e)
  61     {
  62         PyErr_SetString( PyExc_SystemError,
  63                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  64     }
  65     catch(const RuntimeException & e)
  66     {
  67         PyErr_SetString( PyExc_SystemError,
  68                          OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US).getStr() );
  69     }
  70 }
  71
  72 /// @throws RuntimeException
  73 static PyRef createClass( const OUString & name, const Runtime &runtime )
  74 {
  75     // assuming that this is never deleted !
  76     // note I don't have the knowledge how to initialize these type objects correctly !
  77     TypeDescription desc( name );
  78     if( ! desc.is() )
  79     {
  80         throw RuntimeException( "pyuno.getClass: uno exception " + name + " is unknown" );
  81     }
  82
  83     bool isStruct = desc.get()->eTypeClass == typelib_TypeClass_STRUCT;
  84     bool isExc = desc.get()->eTypeClass == typelib_TypeClass_EXCEPTION;
  85     bool isInterface = desc.get()->eTypeClass == typelib_TypeClass_INTERFACE;
  86     if( !isStruct  && !isExc && ! isInterface )
  87     {
  88         throw RuntimeException( "pyuno.getClass: " + name + "is a " +
  89                     OUString::createFromAscii( typeClassToString( static_cast<css::uno::TypeClass>(desc.get()->eTypeClass)) ) +
  90                     ", expected EXCEPTION, STRUCT or INTERFACE" );
  91     }
  92
  93     // retrieve base class
  94     PyRef base;
  95     if( isInterface )
  96     {
  97         typelib_InterfaceTypeDescription *pDesc = reinterpret_cast<typelib_InterfaceTypeDescription *>(desc.get());
  98         if( pDesc->pBaseTypeDescription )
  99         {
 100             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 101         }
 102         else
 103         {
 104             // must be XInterface !
 105         }
 106     }
 107     else
 108     {
 109         typelib_CompoundTypeDescription *pDesc = reinterpret_cast<typelib_CompoundTypeDescription*>(desc.get());
 110         if( pDesc->pBaseTypeDescription )
 111         {
 112             base = getClass( pDesc->pBaseTypeDescription->aBase.pTypeName, runtime );
 113         }
 114         else
 115         {
 116             if( isExc )
 117                 // we are currently creating the root UNO exception
 118                 base = PyRef(PyExc_Exception);
 119         }
 120     }
 121     PyRef args( PyTuple_New( 3 ), SAL_NO_ACQUIRE, NOT_NULL );
 122
 123     PyRef pyTypeName = ustring2PyString( name /*.replace( '.', '_' )*/ );
 124
 125     PyRef bases;
 126     if( base.is() )
 127     {
 128         { // for CC, keeping ref-count being 1
 129         bases = PyRef( PyTuple_New( 1 ), SAL_NO_ACQUIRE );
 130         }
 131         PyTuple_SetItem( bases.get(), 0 , base.getAcquired() );
 132     }
 133     else
 134     {
 135         bases = PyRef( PyTuple_New( 0 ), SAL_NO_ACQUIRE );
 136     }
 137
 138     PyTuple_SetItem( args.get(), 0, pyTypeName.getAcquired());
 139     PyTuple_SetItem( args.get(), 1, bases.getAcquired() );
 140     PyTuple_SetItem( args.get(), 2, PyDict_New() );
 141
 142     PyRef ret(
 143         PyObject_CallObject(reinterpret_cast<PyObject *>(&PyType_Type) , args.get()),
 144         SAL_NO_ACQUIRE );
 145
 146     // now overwrite ctor and attrib functions
 147     if( isInterface )
 148     {
 149         PyObject_SetAttrString(
 150             ret.get(), "__pyunointerface__",
 151             ustring2PyString(name).get() );
 152     }
 153     else
 154     {
 155         PyRef ctor = getObjectFromUnoModule( runtime,"_uno_struct__init__" );
 156         PyRef setter = getObjectFromUnoModule( runtime,"_uno_struct__setattr__" );
 157         PyRef getter = getObjectFromUnoModule( runtime,"_uno_struct__getattr__" );
 158         PyRef repr = getObjectFromUnoModule( runtime,"_uno_struct__repr__" );
 159         PyRef eq = getObjectFromUnoModule( runtime,"_uno_struct__eq__" );
 160         PyRef ne = getObjectFromUnoModule( runtime,"_uno_struct__ne__" );
 161
 162         PyObject_SetAttrString(
 163             ret.get(), "__pyunostruct__",
 164             ustring2PyString(name).get() );
 165         PyObject_SetAttrString(
 166             ret.get(), "typeName",
 167             ustring2PyString(name).get() );
 168         PyObject_SetAttrString(
 169             ret.get(), "__init__", ctor.get() );
 170         PyObject_SetAttrString(
 171             ret.get(), "__getattr__", getter.get() );
 172         PyObject_SetAttrString(
 173             ret.get(), "__setattr__", setter.get() );
 174         PyObject_SetAttrString(
 175             ret.get(), "__repr__", repr.get() );
 176         PyObject_SetAttrString(
 177             ret.get(), "__str__", repr.get() );
 178         PyObject_SetAttrString(
 179             ret.get(), "__eq__", eq.get() );
 180         PyObject_SetAttrString(
 181             ret.get(), "__ne__", ne.get() );
 182     }
 183     return ret;
 184 }
 185
 186 bool isInstanceOfStructOrException( PyObject *obj)
 187 {
 188     PyRef attr(
 189         PyObject_GetAttrString(obj, "__class__"),
 190         SAL_NO_ACQUIRE );
 191     if(attr.is())
 192         return PyObject_HasAttrString(attr.get(), "__pyunostruct__");
 193     else
 194         return false;
 195 }
 196
 197 bool isInterfaceClass( const Runtime &runtime, PyObject * obj )
 198 {
 199     const ClassSet & set = runtime.getImpl()->cargo->interfaceSet;
 200     return set.find( obj ) != set.end();
 201 }
 202
 203 PyRef getClass( const OUString & name , const Runtime &runtime)
 204 {
 205     PyRef ret;
 206
 207     RuntimeCargo *cargo =runtime.getImpl()->cargo;
 208     ExceptionClassMap::iterator ii = cargo->exceptionMap.find( name );
 209     if( ii == cargo->exceptionMap.end() )
 210     {
 211         ret = createClass( name, runtime );
 212         cargo->exceptionMap[name] = ret;
 213         if( PyObject_HasAttrString(
 214                 ret.get(), "__pyunointerface__" ) )
 215             cargo->interfaceSet.insert( ret );
 216
 217         PyObject_SetAttrString(
 218             ret.get(), "__pyunointerface__",
 219             ustring2PyString(name).get() );
 220     }
 221     else
 222     {
 223         ret = ii->second;
 224     }
 225
 226     return ret;
 227 }
 228
 229
 230 }
 231
 232 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */