138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
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* Copyright (C) 2018 David Shah <david@symbioticeda.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifndef PYWRAPPERS_H
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#define PYWRAPPERS_H
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#include <boost/function_types/function_arity.hpp>
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#include <boost/function_types/function_type.hpp>
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#include <boost/function_types/parameter_types.hpp>
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#include <boost/function_types/result_type.hpp>
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#include <boost/python.hpp>
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#include <boost/python/suite/indexing/map_indexing_suite.hpp>
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#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
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#include <utility>
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#include "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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using namespace boost::python;
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namespace PythonConversion {
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template <typename T> struct ContextualWrapper
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{
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Context *ctx;
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T base;
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inline ContextualWrapper(Context *c, T &&x) : ctx(c), base(x){};
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inline operator T() { return base; };
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typedef T base_type;
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};
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template <typename T> struct WrapIfNotContext {
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typedef ContextualWrapper<T> maybe_wrapped_t;
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};
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template <> struct WrapIfNotContext<Context> {
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typedef Context maybe_wrapped_t;
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};
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template <typename T> inline Context *get_ctx(typename WrapIfNotContext<T>::maybe_wrapped_t &wrp_ctx) {
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return wrp_ctx.ctx;
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}
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template <> inline Context *get_ctx<Context>(WrapIfNotContext<Context>::maybe_wrapped_t &unwrp_ctx) {
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return &unwrp_ctx;
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}
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template <typename T> inline T&get_base(typename WrapIfNotContext<T>::maybe_wrapped_t &wrp_ctx) {
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return wrp_ctx.base;
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}
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template <> inline Context &get_base<Context>(WrapIfNotContext<Context>::maybe_wrapped_t &unwrp_ctx) {
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return unwrp_ctx;
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}
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template <typename T> ContextualWrapper<T> wrap_ctx(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); }
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// Dummy class, to be implemented by users
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template <typename T> struct string_converter;
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// Action options
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template <typename T> struct do_nothing
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{
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inline T operator()(Context *ctx, T x) { return x; }
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using ret_type = T;
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using arg_type = T;
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};
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template <typename T> struct wrap_context
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{
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inline ContextualWrapper<T> operator()(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); }
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using arg_type = T;
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using ret_type = ContextualWrapper<T>;
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};
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template <typename T> struct unwrap_context
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{
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inline T operator()(Context *ctx, ContextualWrapper<T> x) { return x.base; }
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using ret_type = T;
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using arg_type = ContextualWrapper<T>;
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};
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template <typename T> struct conv_from_str
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{
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inline T operator()(Context *ctx, std::string x) { return string_converter<T>().from_str(ctx, x); }
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using ret_type = T;
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using arg_type = std::string;
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};
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template <typename T> struct conv_to_str
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{
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inline std::string operator()(Context *ctx, T x) { return string_converter<T>().to_str(ctx, x); }
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using ret_type = std::string;
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using arg_type = T;
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};
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// Function wrapper
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// Example: one parameter, one return
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template <typename Class, typename FuncT, FuncT fn, typename rv_conv, typename arg1_conv> struct fn_wrapper
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{
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using class_type = typename WrapIfNotContext<Class>::maybe_wrapped_t;
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using conv_result_type = typename rv_conv::ret_type;
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using conv_arg1_type = typename arg1_conv::arg_type;
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static conv_result_type wrapped_fn(class_type &cls, conv_arg1_type arg1)
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{
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Context *ctx = get_ctx<Class>(cls);
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Class &base = get_base<Class>(cls);
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return rv_conv()(ctx, (base.*fn)(arg1_conv()(ctx, arg1)));
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}
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template <typename WrapCls> static void def_wrap(WrapCls cls_, const char *name) { cls_.def(name, wrapped_fn); }
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};
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} // namespace PythonConversion
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NEXTPNR_NAMESPACE_END
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#endif
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