diff options
Diffstat (limited to 'common')
-rw-r--r-- | common/pybindings.cc | 86 |
1 files changed, 83 insertions, 3 deletions
diff --git a/common/pybindings.cc b/common/pybindings.cc index 43e474e1..0990c00c 100644 --- a/common/pybindings.cc +++ b/common/pybindings.cc @@ -1,15 +1,95 @@ +/* + * nextpnr -- Next Generation Place and Route + * + * Copyright (C) 2018 Clifford Wolf <clifford@clifford.at> + * Copyright (C) 2018 David Shah <dave@ds0.me> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + #include "design.h" #include "chip.h" - +#include <utility> +#include <stdexcept> #include <boost/python.hpp> #include <boost/python/suite/indexing/vector_indexing_suite.hpp> #include <boost/python/suite/indexing/map_indexing_suite.hpp> +#include <boost/python/suite/indexing/map_indexing_suite.hpp> + using namespace boost::python; -#define PASTER(x,y) x ## _ ## y -#define EVALUATOR(x,y) PASTER(x,y) +#define PASTER(x, y) x ## _ ## y +#define EVALUATOR(x, y) PASTER(x,y) #define MODULE_NAME EVALUATOR(nextpnrpy, ARCHNAME) +/* +A wrapper for a Pythonised nextpnr Iterator. The actual class wrapped is a +pair<Iterator, Iterator> containing (current, end) +*/ +template<typename T> +struct iterator_wrapper { + typedef decltype(*(std::declval<T>())) value_t; + + static value_t next(std::pair<T, T> &iter) { + if (iter.first != iter.second) { + value_t val = *iter.first; + ++iter.first; + return val; + } else { + PyErr_SetString(PyExc_StopIteration, "End of range reached"); + boost::python::throw_error_already_set(); + // Should be unreachable, but prevent control may reach end of non-void + throw std::runtime_error("unreachable"); + } + } + + static void wrap(const char *python_name) { + class_<std::pair<T, T>>(python_name, no_init) + .def("next", next); + } +}; + +/* +A wrapper for a nextpnr Range. Ranges should have two functions, begin() +and end() which return iterator-like objects supporting ++, * and != +Full STL iterator semantics are not required, unlike the standard Boost wrappers +*/ +inline object pass_through(object const &o) { return o; } + +template<typename T> +struct range_wrapper { + typedef decltype(std::declval<T>().begin()) iterator_t; + + static std::pair<iterator_t, iterator_t> iter(T &range) { + return std::make_pair(range.begin(), range.end()); + } + + static void wrap(const char *range_name, const char *iter_name) { + class_<T>(range_name, no_init) + .def("__iter__", iter); + iterator_wrapper<iterator_t>().wrap(iter_name); + } +}; + +#define WRAP_RANGE(t) range_wrapper<t##Range>().wrap(#t "Range", #t "Iterator") + BOOST_PYTHON_MODULE (MODULE_NAME) { + // From Chip.h + class_<ChipArgs>("ChipArgs"); + WRAP_RANGE(Bels); + WRAP_RANGE(AllWires); + WRAP_RANGE(WireDelay); + WRAP_RANGE(BelPin); } |