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Diffstat (limited to 'common/pywrappers.h')
-rw-r--r-- | common/pywrappers.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/common/pywrappers.h b/common/pywrappers.h new file mode 100644 index 00000000..e4391b21 --- /dev/null +++ b/common/pywrappers.h @@ -0,0 +1,91 @@ +/* + * nextpnr -- Next Generation Place and Route + * + * Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com> + * Copyright (C) 2018 David Shah <david@symbioticeda.com> + * + * 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. + * + */ + +#ifndef PYWRAPPERS_H +#define PYWRAPPERS_H + +#include <boost/function_types/function_arity.hpp> +#include <boost/function_types/function_type.hpp> +#include <boost/function_types/parameter_types.hpp> +#include <boost/function_types/result_type.hpp> +#include <boost/python.hpp> +#include <boost/python/suite/indexing/map_indexing_suite.hpp> +#include <boost/python/suite/indexing/vector_indexing_suite.hpp> +#include <utility> +#include "nextpnr.h" + +NEXTPNR_NAMESPACE_BEGIN + +using namespace boost::python; + +namespace PythonConversion { +template <typename T> struct ContextualWrapper +{ + Context *ctx; + T base; + + ContextualWrapper(Context *c, T &&x) : ctx(c), base(x){}; + + operator T() { return base; }; + typedef T base_type; +}; + +// Action options +class do_nothing +{ + template <typename T> T operator()(Context *ctx, T x) { return x; } + + template <typename T> using ret_type = T; + template <typename T> using arg_type = T; +}; + +class wrap_context +{ + template <typename T> ContextualWrapper<T> operator()(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); } + + template <typename T> using ret_type = ContextualWrapper<T>; +}; + +class unwrap_context +{ + template <typename T> T operator()(Context *ctx, ContextualWrapper<T> x) { return x.base; } + + template <typename T> using arg_type = ContextualWrapper<T>; +}; + +// Function wrapper +// Example: one parameter, one return +template <typename Class, typename FuncT, FuncT fn, typename rv_conv, typename arg1_conv> struct function_wrapper +{ + using result_type = typename boost::function_types::result_type<FuncT>::type; + using arg1_type = typename boost::mpl::at_c<boost::function_types::parameter_types<FuncT>, 1>::type; + using class_type = ContextualWrapper<Class>; + + static typename rv_conv::ret_type wrapped_fn(class_type &cls, typename arg1_conv::arg_type arg1) + { + return rv_conv()(cls.ctx, cls.base.*fn(arg1_conv()(cls.ctx, arg1))); + } +}; + +} // namespace PythonConversion + +NEXTPNR_NAMESPACE_END + +#endif |