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libreoffice/pyuno/source/module/pyuno_struct.cxx
Stephan Bergmann 206b5b2661 New loplugin:external 
...warning about (for now only) functions and variables with external linkage
that likely don't need it.

The problems with moving entities into unnamed namespacs and breaking ADL
(as alluded to in comments in compilerplugins/clang/external.cxx) are
illustrated by the fact that while

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

returns 1, both moving just the struct S2 into an nunnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    namespace { struct S2: S1 { int f() { return 1; } }; }
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

as well as moving just the function f overload into an unnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    namespace { int f(S2 s) { return s.f(); } }
  }
  int main() { return f(N::S2()); }

would each change the program to return 0 instead.

Change-Id: I4d09f7ac5e8f9bcd6e6bde4712608444b642265c
Reviewed-on: https://gerrit.libreoffice.org/60539
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2018-09-17 09:05:38 +02:00

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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 <sal/config.h>
#include <algorithm>
#include <cassert>
#include <rtl/strbuf.hxx>
#include <typelib/typedescription.hxx>
#include <com/sun/star/beans/UnknownPropertyException.hpp>
#include <com/sun/star/beans/XMaterialHolder.hpp>
#include "pyuno_impl.hxx"
using com::sun::star::uno::Sequence;
using com::sun::star::uno::Reference;
using com::sun::star::uno::Any;
using com::sun::star::uno::makeAny;
using com::sun::star::uno::UNO_QUERY;
using com::sun::star::uno::TypeClass;
using com::sun::star::uno::RuntimeException;
using com::sun::star::uno::Exception;
using com::sun::star::lang::XSingleServiceFactory;
using com::sun::star::script::XInvocation2;
using com::sun::star::beans::XMaterialHolder;
namespace pyuno
{
static void PyUNOStruct_del( PyObject* self )
{
PyUNO *me = reinterpret_cast<PyUNO*>( self );
{
PyThreadDetach antiguard;
delete me->members;
}
PyObject_Del( self );
}
static PyObject *PyUNOStruct_str( PyObject *self )
{
PyUNO *me = reinterpret_cast<PyUNO*>( self );
OStringBuffer buf;
Reference<XMaterialHolder> rHolder( me->members->xInvocation,UNO_QUERY );
if( rHolder.is() )
{
PyThreadDetach antiguard;
Any a = rHolder->getMaterial();
OUString s = val2str( a.getValue(), a.getValueType().getTypeLibType() );
buf.append( OUStringToOString( s, RTL_TEXTENCODING_ASCII_US ) );
}
return PyStr_FromString( buf.getStr());
}
static PyObject *PyUNOStruct_repr( PyObject *self )
{
PyUNO *me = reinterpret_cast<PyUNO*>( self );
PyObject *ret = nullptr;
if( me->members->wrappedObject.getValueType().getTypeClass()
== css::uno::TypeClass_EXCEPTION )
{
Reference< XMaterialHolder > rHolder(me->members->xInvocation,UNO_QUERY);
if( rHolder.is() )
{
Any a = rHolder->getMaterial();
Exception e;
a >>= e;
ret = ustring2PyUnicode(e.Message ).getAcquired();
}
}
else
{
ret = PyUNOStruct_str( self );
}
return ret;
}
static PyObject* PyUNOStruct_dir( PyObject *self )
{
PyUNO *me = reinterpret_cast<PyUNO*>( self );
PyObject* member_list = nullptr;
try
{
member_list = PyList_New( 0 );
for( const auto& aMember : me->members->xInvocation->getMemberNames() )
{
// setitem steals a reference
PyList_Append( member_list, ustring2PyString( aMember ).getAcquired() );
}
}
catch( const RuntimeException &e )
{
raisePyExceptionWithAny( makeAny(e) );
}
return member_list;
}
static PyObject* PyUNOStruct_getattr( PyObject* self, char* name )
{
PyUNO *me = reinterpret_cast<PyUNO*>( self );
try
{
Runtime runtime;
me = reinterpret_cast<PyUNO*>(self);
if (strcmp (name, "__dict__") == 0)
{
Py_INCREF (Py_TYPE(me)->tp_dict);
return Py_TYPE(me)->tp_dict;
}
if( strcmp( name, "__class__" ) == 0 )
{
return getClass(
me->members->wrappedObject.getValueType().getTypeName(), runtime ).getAcquired();
}
PyObject *pRet = PyObject_GenericGetAttr( self, PyUnicode_FromString( name ) );
if( pRet )
return pRet;
PyErr_Clear();
OUString attrName( OUString::createFromAscii( name ) );
if( me->members->xInvocation->hasProperty( attrName ) )
{
//Return the value of the property
Any anyRet;
{
PyThreadDetach antiguard;
anyRet = me->members->xInvocation->getValue( attrName );
}
PyRef ret = runtime.any2PyObject( anyRet );
Py_XINCREF( ret.get() );
return ret.get();
}
//or else...
PyErr_SetString (PyExc_AttributeError, name);
}
catch( const css::reflection::InvocationTargetException & e )
{
raisePyExceptionWithAny( e.TargetException );
}
catch( const css::beans::UnknownPropertyException & e )
{
raisePyExceptionWithAny( makeAny(e) );
}
catch( const css::lang::IllegalArgumentException &e )
{
raisePyExceptionWithAny( makeAny(e) );
}
catch( const css::script::CannotConvertException &e )
{
raisePyExceptionWithAny( makeAny(e) );
}
catch( const RuntimeException &e )
{
raisePyExceptionWithAny( makeAny(e) );
}
return nullptr;
}
static int PyUNOStruct_setattr (PyObject* self, char* name, PyObject* value)
{
PyUNO* me;
me = reinterpret_cast<PyUNO*>(self);
try
{
Runtime runtime;
Any val= runtime.pyObject2Any(value, ACCEPT_UNO_ANY);
OUString attrName( OUString::createFromAscii( name ) );
{
PyThreadDetach antiguard;
if (me->members->xInvocation->hasProperty (attrName))
{
me->members->xInvocation->setValue (attrName, val);
return 0; //Keep with Python's boolean system
}
}
}
catch( const css::reflection::InvocationTargetException & e )
{
raisePyExceptionWithAny( e.TargetException );
return 1;
}
catch( const css::beans::UnknownPropertyException & e )
{
raisePyExceptionWithAny( makeAny(e) );
return 1;
}
catch( const css::script::CannotConvertException &e )
{
raisePyExceptionWithAny( makeAny(e) );
return 1;
}
catch( const RuntimeException & e )
{
raisePyExceptionWithAny( makeAny( e ) );
return 1;
}
PyErr_SetString (PyExc_AttributeError, name);
return 1; //as above.
}
static PyObject* PyUNOStruct_cmp( PyObject *self, PyObject *that, int op )
{
PyObject *result;
if(op != Py_EQ && op != Py_NE)
{
PyErr_SetString( PyExc_TypeError, "only '==' and '!=' comparisons are defined" );
return nullptr;
}
if( self == that )
{
result = (op == Py_EQ ? Py_True : Py_False);
Py_INCREF( result );
return result;
}
try
{
Runtime runtime;
if( PyObject_IsInstance( that, getPyUnoStructClass().get() ) )
{
PyUNO *me = reinterpret_cast< PyUNO * > ( self );
PyUNO *other = reinterpret_cast< PyUNO * > ( that );
css::uno::TypeClass tcMe = me->members->wrappedObject.getValueTypeClass();
css::uno::TypeClass tcOther = other->members->wrappedObject.getValueTypeClass();
if( tcMe == tcOther )
{
if( tcMe == css::uno::TypeClass_STRUCT ||
tcMe == css::uno::TypeClass_EXCEPTION )
{
Reference< XMaterialHolder > xMe( me->members->xInvocation,UNO_QUERY );
Reference< XMaterialHolder > xOther( other->members->xInvocation,UNO_QUERY );
if( xMe->getMaterial() == xOther->getMaterial() )
{
result = (op == Py_EQ ? Py_True : Py_False);
Py_INCREF( result );
return result;
}
}
}
}
}
catch( const css::uno::RuntimeException & e)
{
raisePyExceptionWithAny( makeAny( e ) );
}
result = (op == Py_EQ ? Py_False : Py_True);
Py_INCREF(result);
return result;
}
static PyMethodDef PyUNOStructMethods[] =
{
{"__dir__", reinterpret_cast<PyCFunction>(PyUNOStruct_dir), METH_NOARGS, nullptr},
{nullptr, nullptr, 0, nullptr}
};
static PyTypeObject PyUNOStructType =
{
PyVarObject_HEAD_INIT( &PyType_Type, 0 )
"pyuno.struct",
sizeof (PyUNO),
0,
PyUNOStruct_del,
nullptr,
PyUNOStruct_getattr,
PyUNOStruct_setattr,
/* this type does not exist in Python 3: (cmpfunc) */ nullptr,
PyUNOStruct_repr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
PyUNOStruct_str,
nullptr,
nullptr,
nullptr,
Py_TPFLAGS_HAVE_RICHCOMPARE,
nullptr,
nullptr,
nullptr,
PyUNOStruct_cmp,
0,
nullptr,
nullptr,
PyUNOStructMethods,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
0,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr
, 0
#if PY_VERSION_HEX >= 0x03040000
, nullptr
#endif
};
int PyUNOStruct_initType()
{
return PyType_Ready( &PyUNOStructType );
}
PyRef getPyUnoStructClass()
{
return PyRef( reinterpret_cast< PyObject * > ( &PyUNOStructType ) );
}
PyRef PyUNOStruct_new (
const Any &targetInterface,
const Reference<XSingleServiceFactory> &ssf )
{
Reference<XInvocation2> xInvocation;
{
PyThreadDetach antiguard;
xInvocation.set(
ssf->createInstanceWithArguments( Sequence<Any>( &targetInterface, 1 ) ), css::uno::UNO_QUERY_THROW );
}
if( !Py_IsInitialized() )
throw RuntimeException();
PyUNO* self = PyObject_New (PyUNO, &PyUNOStructType);
if (self == nullptr)
return PyRef(); // == error
self->members = new PyUNOInternals;
self->members->xInvocation = xInvocation;
self->members->wrappedObject = targetInterface;
return PyRef( reinterpret_cast<PyObject*>(self), SAL_NO_ACQUIRE );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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