Below is a simplified example of a tricky wrapping problem I have
encountered. The example remains somewhat complicated, but further
simplification results in a file that causes no trouble.
I get a compile error when I try to build the boost python code
generated by the following case:
#### test_enum.h ####
struct System {
struct ProjectOptions {
enum Option {
All = 1
};
ProjectOptions(Option);
};
void project(ProjectOptions = ProjectOptions::All);
};
#### end test_enum.h ####
The trouble comes from the default value ('ProjectOptions::All') for
the project() method. Notice also the constructor for ProjectOptions
from Options. That is required for reproducing the trouble here.
The resulting boost.python code is as follows:
#### wrap_enum2.py ####
from pyplusplus import module_builder
mb = module_builder.module_builder_t(["test_enum2.h"]
, gccxml_path = "gccxml.exe")
mb.build_code_creator( module_name='test' )
mb.write_module( 'test_wrap_enum2.cpp' )
#### end wrap_enum2.py ####
#### test_wrap_enum2.cpp ####
// This file has been generated by Py++.
#include "boost/python.hpp"
#include "test_enum2.h"
namespace bp = boost::python;
BOOST_PYTHON_MODULE(test){
{ //::System
typedef bp::class_< System > System_exposer_t;
System_exposer_t System_exposer = System_exposer_t( "System" );
bp::scope System_scope( System_exposer );
{ //::System::ProjectOptions
typedef bp::class_< System::ProjectOptions >
ProjectOptions_exposer_t;
ProjectOptions_exposer_t ProjectOptions_exposer =
ProjectOptions_exposer_t( "ProjectOptions", bp::init<
System::ProjectOptions::Option >(( bp::arg("arg0") )) );
bp::scope ProjectOptions_scope( ProjectOptions_exposer );
bp::enum_< System::ProjectOptions::Option>("Option")
.value("All", System::ProjectOptions::All)
.export_values()
;
bp::implicitly_convertible<
System::ProjectOptions::Option, System::ProjectOptions >();
}
{ //::System::project
typedef void ( ::System::*project_function_type )(
::System::ProjectOptions ) ;
System_exposer.def(
"project"
, project_function_type( &::System::project )
, ( bp::arg("arg0")=All ) );
}
}
}
#### test_wrap_enum2.cpp ####
The symbol "All" in the line ", ( bp::arg("arg0")=All ) );" is out of
scope here. If I change the line from
, ( bp::arg("arg0")=All ) ); // compile failure
to
, ( bp::arg("arg0")=System::ProjectOptions::All ) ); // works
it compiles fine.
Is there any way to instruct pyplusplus to generate the default
argument value for the project() method with the scope
"System::ProjectOptions::All"?
Any enlightenment is much appreciated.
--Chris Bruns
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