pyosys: support ObjRange

[georgerennie]

This adds support for cells(), modules() and wires() that all return ObjRanges, converting them into lists for python.

The C++ diff is slightly messy as this causes a load of generated variable indices to be shifted, but ignoring those changes you get the following

2572a2573,2578
> 		// WRAPPED from "RTLIL::ObjRange<RTLIL::Wire*> wires() { return RTLIL::ObjRange<RTLIL::Wire*>(&wires_, &refcount_wires_); }" in kernel/rtlil
> 		boost::python::list wires();
>
> 		// WRAPPED from "RTLIL::ObjRange<RTLIL::Cell*> cells() { return RTLIL::ObjRange<RTLIL::Cell*>(&cells_, &refcount_cells_); }" in kernel/rtlil
> 		boost::python::list cells();
>
4082a4089,4091
> 		// WRAPPED from "RTLIL::ObjRange<RTLIL::Module*> modules();" in kernel/rtlil
> 		boost::python::list modules();
>
8760a8770,8793
> 	// WRAPPED from "RTLIL::ObjRange<RTLIL::Wire*> wires() { return RTLIL::ObjRange<RTLIL::Wire*>(&wires_, &refcount_wires_); }" in kernel/rtlil
> 	boost::python::list Module::wires()
> 	{
> 		RTLIL::ObjRange<YOSYS_NAMESPACE::RTLIL::Wire*> ret_ = this->get_cpp_obj()->wires();
> 		boost::python::list ret____tmp;
> 		for(auto tmp_205 : ret_)
> 		{
> 			ret____tmp.append(Wire::get_py_obj(tmp_205));
> 		}
> 		return ret____tmp;
> 	}
>
> 	// WRAPPED from "RTLIL::ObjRange<RTLIL::Cell*> cells() { return RTLIL::ObjRange<RTLIL::Cell*>(&cells_, &refcount_cells_); }" in kernel/rtlil
> 	boost::python::list Module::cells()
> 	{
> 		RTLIL::ObjRange<YOSYS_NAMESPACE::RTLIL::Cell*> ret_ = this->get_cpp_obj()->cells();
> 		boost::python::list ret____tmp;
> 		for(auto tmp_206 : ret_)
> 		{
> 			ret____tmp.append(Cell::get_py_obj(tmp_206));
> 		}
> 		return ret____tmp;
> 	}
>
12284a12318,12329
> 	// WRAPPED from "RTLIL::ObjRange<RTLIL::Module*> modules();" in kernel/rtlil
> 	boost::python::list Design::modules()
> 	{
> 		RTLIL::ObjRange<YOSYS_NAMESPACE::RTLIL::Module*> ret_ = this->get_cpp_obj()->modules();
> 		boost::python::list ret____tmp;
> 		for(auto tmp_230 : ret_)
> 		{
> 			ret____tmp.append(Module::get_py_obj(tmp_230));
> 		}
> 		return ret____tmp;
> 	}
>
14722a14768,14769
> 			.def<boost::python::list (Module::*)(void)>("wires", &Module::wires)
> 			.def<boost::python::list (Module::*)(void)>("cells", &Module::cells)
15216a15264
> 			.def<boost::python::list (Design::*)(void)>("modules", &Design::modules)

apologies for the number of pyosys PRs in one afternoon - I'm trying to get it working and fixing up little issues I have along the way

[povik]

What did one do to get lists of the objects when these methods weren't available?

[georgerennie]

I'm guessing either directly accessing wires_ or selected_wires() (which returns std::vector). I suspect the fact that pyosys has been not used too much is a factor.

https://github.com/YosysHQ/yosys/blob/main/examples/python-api/pass.py uses selected_* methods.

[povik]

Thanks, I wanted to look into the sample plugin but couldn't find it quickly