diff options
Diffstat (limited to 'third_party/immer/extra/guile/scm')
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/convert.hpp | 58 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/define.hpp | 36 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/finalizer_wrapper.hpp | 62 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/function_args.hpp | 21 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/invoke.hpp | 39 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/pack.hpp | 52 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/subr_wrapper.hpp | 111 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/detail/util.hpp | 49 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/group.hpp | 88 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/list.hpp | 54 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/scm.hpp | 14 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/type.hpp | 153 | ||||
| -rw-r--r-- | third_party/immer/extra/guile/scm/val.hpp | 88 |
13 files changed, 825 insertions, 0 deletions
diff --git a/third_party/immer/extra/guile/scm/detail/convert.hpp b/third_party/immer/extra/guile/scm/detail/convert.hpp new file mode 100644 index 000000000000..4c87ff185669 --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/convert.hpp @@ -0,0 +1,58 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/util.hpp> + +#include <cstdint> +#include <type_traits> +#include <utility> + +#include <libguile.h> + +namespace scm { +namespace detail { + +template <typename T, typename Enable=void> +struct convert; + +template <typename T> +auto to_scm(T&& v) + -> SCM_DECLTYPE_RETURN( + convert<std::decay_t<T>>::to_scm(std::forward<T>(v))); + +template <typename T> +auto to_cpp(SCM v) + -> SCM_DECLTYPE_RETURN( + convert<std::decay_t<T>>::to_cpp(v)); + +} // namespace detail +} // namespace scm + +#define SCM_DECLARE_NUMERIC_TYPE(cpp_name__, scm_name__) \ + namespace scm { \ + namespace detail { \ + template <> \ + struct convert<cpp_name__> { \ + static cpp_name__ to_cpp(SCM v) { return scm_to_ ## scm_name__(v); } \ + static SCM to_scm(cpp_name__ v) { return scm_from_ ## scm_name__(v); } \ + }; \ + }} /* namespace scm::detail */ \ + /**/ + +SCM_DECLARE_NUMERIC_TYPE(float, double); +SCM_DECLARE_NUMERIC_TYPE(double, double); +SCM_DECLARE_NUMERIC_TYPE(std::int8_t, int8); +SCM_DECLARE_NUMERIC_TYPE(std::int16_t, int16); +SCM_DECLARE_NUMERIC_TYPE(std::int32_t, int32); +SCM_DECLARE_NUMERIC_TYPE(std::int64_t, int64); +SCM_DECLARE_NUMERIC_TYPE(std::uint8_t, uint8); +SCM_DECLARE_NUMERIC_TYPE(std::uint16_t, uint16); +SCM_DECLARE_NUMERIC_TYPE(std::uint32_t, uint32); +SCM_DECLARE_NUMERIC_TYPE(std::uint64_t, uint64); diff --git a/third_party/immer/extra/guile/scm/detail/define.hpp b/third_party/immer/extra/guile/scm/detail/define.hpp new file mode 100644 index 000000000000..08b6e763381f --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/define.hpp @@ -0,0 +1,36 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#ifndef SCM_AUTO_EXPORT +#define SCM_AUTO_EXPORT 1 +#endif + +#include <scm/detail/subr_wrapper.hpp> +#include <scm/list.hpp> + +namespace scm { +namespace detail { + +template <typename Tag, typename Fn> +static void define_impl(const std::string& name, Fn fn) +{ + using args_t = function_args_t<Fn>; + constexpr auto args_size = pack_size_v<args_t>; + constexpr auto has_rest = std::is_same<pack_last_t<args_t>, scm::args>{}; + constexpr auto arg_count = args_size - has_rest; + auto subr = (scm_t_subr) +subr_wrapper_aux<Tag>(fn, args_t{}); + scm_c_define_gsubr(name.c_str(), arg_count, 0, has_rest, subr); +#if SCM_AUTO_EXPORT + scm_c_export(name.c_str()); +#endif +} + +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/finalizer_wrapper.hpp b/third_party/immer/extra/guile/scm/detail/finalizer_wrapper.hpp new file mode 100644 index 000000000000..258249eb2c73 --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/finalizer_wrapper.hpp @@ -0,0 +1,62 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/invoke.hpp> +#include <scm/detail/function_args.hpp> +#include <scm/detail/convert.hpp> + +namespace scm { +namespace detail { +// this anonymous namespace should help avoiding registration clashes +// among translation units. +namespace { + +template <typename Tag, typename Fn> +auto finalizer_wrapper_impl(Fn fn, pack<>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] { invoke(fn_); }; +} +template <typename Tag, typename Fn, typename T1> +auto finalizer_wrapper_impl(Fn fn, pack<T1>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1) { invoke(fn_, to_cpp<T1>(a1)); }; +} +template <typename Tag, typename Fn, typename T1, typename T2> +auto finalizer_wrapper_impl(Fn fn, pack<T1, T2>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2) { + invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2)); + }; +} +template <typename Tag, typename Fn, typename T1, typename T2, typename T3> +auto finalizer_wrapper_impl(Fn fn, pack<T1, T2, T3>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2, SCM a3) { + invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2), to_cpp<T3>(a3)); + }; +} + +template <typename Tag, typename Fn> +auto finalizer_wrapper(Fn fn) +{ + return finalizer_wrapper_impl<Tag>(fn, function_args_t<Fn>{}); +} + +} // anonymous namespace +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/function_args.hpp b/third_party/immer/extra/guile/scm/detail/function_args.hpp new file mode 100644 index 000000000000..809e3eb1979b --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/function_args.hpp @@ -0,0 +1,21 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/pack.hpp> +#include <boost/callable_traits/args.hpp> + +namespace scm { +namespace detail { + +template <typename Fn> +using function_args_t = boost::callable_traits::args_t<Fn, pack>; + +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/invoke.hpp b/third_party/immer/extra/guile/scm/detail/invoke.hpp new file mode 100644 index 000000000000..d9f2b37ccece --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/invoke.hpp @@ -0,0 +1,39 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +// Adapted from the official std::invoke proposal: +// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4169.html + +#include <type_traits> +#include <functional> + +namespace scm { +namespace detail { + +template <typename Functor, typename... Args> +std::enable_if_t< + std::is_member_pointer<std::decay_t<Functor>>::value, + std::result_of_t<Functor&&(Args&&...)>> +invoke(Functor&& f, Args&&... args) +{ + return std::mem_fn(f)(std::forward<Args>(args)...); +} + +template <typename Functor, typename... Args> +std::enable_if_t< + !std::is_member_pointer<std::decay_t<Functor>>::value, + std::result_of_t<Functor&&(Args&&...)>> +invoke(Functor&& f, Args&&... args) +{ + return std::forward<Functor>(f)(std::forward<Args>(args)...); +} + +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/pack.hpp b/third_party/immer/extra/guile/scm/detail/pack.hpp new file mode 100644 index 000000000000..9a1813570bcd --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/pack.hpp @@ -0,0 +1,52 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +namespace scm { +namespace detail { + +struct none_t; + +template <typename... Ts> +struct pack {}; + +template <typename Pack> +struct pack_size; + +template <typename... Ts> +struct pack_size<pack<Ts...>> +{ + static constexpr auto value = sizeof...(Ts); +}; + +template <typename Pack> +constexpr auto pack_size_v = pack_size<Pack>::value; + +template <typename Pack> +struct pack_last +{ + using type = none_t; +}; + +template <typename T, typename ...Ts> +struct pack_last<pack<T, Ts...>> + : pack_last<pack<Ts...>> +{}; + +template <typename T> +struct pack_last<pack<T>> +{ + using type = T; +}; + +template <typename Pack> +using pack_last_t = typename pack_last<Pack>::type; + +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/subr_wrapper.hpp b/third_party/immer/extra/guile/scm/detail/subr_wrapper.hpp new file mode 100644 index 000000000000..fc11ff1c51ec --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/subr_wrapper.hpp @@ -0,0 +1,111 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/invoke.hpp> +#include <scm/detail/function_args.hpp> +#include <scm/detail/convert.hpp> + +namespace scm { +namespace detail { + +// this anonymous namespace should help avoiding registration clashes +// among translation units. +namespace { + +template <typename Tag, typename R, typename Fn> +auto subr_wrapper_impl(Fn fn, pack<R>, pack<>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] () -> SCM { return to_scm(invoke(fn_)); }; +} +template <typename Tag, typename Fn, typename R, typename T1> +auto subr_wrapper_impl(Fn fn, pack<R>, pack<T1>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1) -> SCM { + return to_scm(invoke(fn_, to_cpp<T1>(a1))); + }; +} +template <typename Tag, typename Fn, typename R, typename T1, typename T2> +auto subr_wrapper_impl(Fn fn, pack<R>, pack<T1, T2>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2) -> SCM { + return to_scm(invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2))); + }; +} +template <typename Tag, typename Fn, typename R, typename T1, typename T2, + typename T3> +auto subr_wrapper_impl(Fn fn, pack<R>, pack<T1, T2, T3>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2, SCM a3) -> SCM { + return to_scm(invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2), + to_cpp<T3>(a3))); + }; +} + +template <typename Tag, typename Fn> +auto subr_wrapper_impl(Fn fn, pack<void>, pack<>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] () -> SCM { invoke(fn_); return SCM_UNSPECIFIED; }; +} +template <typename Tag, typename Fn, typename T1> +auto subr_wrapper_impl(Fn fn, pack<void>, pack<T1>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1) -> SCM { + invoke(fn_, to_cpp<T1>(a1)); return SCM_UNSPECIFIED; + }; +} +template <typename Tag, typename Fn, typename T1, typename T2> +auto subr_wrapper_impl(Fn fn, pack<void>, pack<T1, T2>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2) -> SCM { + invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2)); + return SCM_UNSPECIFIED; + }; +} +template <typename Tag, typename Fn, typename T1, typename T2, typename T3> +auto subr_wrapper_impl(Fn fn, pack<void>, pack<T1, T2, T3>) +{ + check_call_once<Tag, Fn>(); + static const Fn fn_ = fn; + return [] (SCM a1, SCM a2, SCM a3) -> SCM { + invoke(fn_, to_cpp<T1>(a1), to_cpp<T2>(a2), to_cpp<T3>(a3)); + return SCM_UNSPECIFIED; + }; +} + +template <typename Tag, typename Fn, typename... Args> +auto subr_wrapper_aux(Fn fn, pack<Args...>) +{ + return subr_wrapper_impl<Tag>( + fn, pack<std::result_of_t<Fn(Args...)>>{}, pack<Args...>{}); +} + +template <typename Tag, typename Fn> +auto subr_wrapper(Fn fn) +{ + return subr_wrapper_aux<Tag>(fn, function_args_t<Fn>{}); +} + +} // anonymous namespace +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/detail/util.hpp b/third_party/immer/extra/guile/scm/detail/util.hpp new file mode 100644 index 000000000000..fdc323722e99 --- /dev/null +++ b/third_party/immer/extra/guile/scm/detail/util.hpp @@ -0,0 +1,49 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <libguile.h> + +namespace scm { +namespace detail { + +#define SCM_DECLTYPE_RETURN(...) \ + decltype(__VA_ARGS__) \ + { return __VA_ARGS__; } \ + /**/ + +template <typename... Ts> +constexpr bool is_valid_v = true; + +template <typename... Ts> +using is_valid_t = void; + +template <typename... Ts> +void check_call_once() +{ + static bool called = false; + if (called) scm_misc_error (nullptr, "Double defined binding. \ +This may be caused because there are multiple C++ binding groups in the same \ +translation unit. You may solve this by using different type tags for each \ +binding group.", SCM_EOL); + called = true; +} + +struct move_sequence +{ + move_sequence() = default; + move_sequence(const move_sequence&) = delete; + move_sequence(move_sequence&& other) + { other.moved_from_ = true; }; + + bool moved_from_ = false; +}; + +} // namespace detail +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/group.hpp b/third_party/immer/extra/guile/scm/group.hpp new file mode 100644 index 000000000000..69cd385820cb --- /dev/null +++ b/third_party/immer/extra/guile/scm/group.hpp @@ -0,0 +1,88 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/define.hpp> +#include <string> + +namespace scm { +namespace detail { + +template <typename Tag, int Seq=0> +struct definer +{ + using this_t = definer; + using next_t = definer<Tag, Seq + 1>; + + std::string group_name_ = {}; + + definer() = default; + definer(definer&&) = default; + + template <int Seq2, + typename Enable=std::enable_if_t<Seq2 + 1 == Seq>> + definer(definer<Tag, Seq2>) + {} + + template <typename Fn> + next_t define(std::string name, Fn fn) && + { + define_impl<this_t>(name, fn); + return { std::move(*this) }; + } + + template <typename Fn> + next_t maker(Fn fn) && + { + define_impl<this_t>("make", fn); + return { std::move(*this) }; + } +}; + +template <typename Tag, int Seq=0> +struct group_definer +{ + using this_t = group_definer; + using next_t = group_definer<Tag, Seq + 1>; + + std::string group_name_ = {}; + + group_definer(std::string name) + : group_name_{std::move(name)} {} + + group_definer(group_definer&&) = default; + + template <int Seq2, + typename Enable=std::enable_if_t<Seq2 + 1 == Seq>> + group_definer(group_definer<Tag, Seq2>) + {} + + template <typename Fn> + next_t define(std::string name, Fn fn) && + { + define_impl<this_t>(group_name_ + "-" + name, fn); + return { std::move(*this) }; + } +}; + +} // namespace detail + +template <typename Tag=void> +detail::definer<Tag> group() +{ + return {}; +} + +template <typename Tag=void> +detail::group_definer<Tag> group(std::string name) +{ + return { std::move(name) }; +} + +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/list.hpp b/third_party/immer/extra/guile/scm/list.hpp new file mode 100644 index 000000000000..dc162c200244 --- /dev/null +++ b/third_party/immer/extra/guile/scm/list.hpp @@ -0,0 +1,54 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/val.hpp> +#include <iostream> + +namespace scm { + +struct list : detail::wrapper +{ + using base_t = detail::wrapper; + using base_t::base_t; + + using iterator = list; + using value_type = val; + + list() : base_t{SCM_EOL} {}; + list end() const { return {}; } + list begin() const { return *this; } + + explicit operator bool() { return handle_ != SCM_EOL; } + + val operator* () const { return val{scm_car(handle_)}; } + + list& operator++ () + { + handle_ = scm_cdr(handle_); + return *this; + } + + list operator++ (int) + { + auto result = *this; + result.handle_ = scm_cdr(handle_); + return result; + } +}; + +struct args : list +{ + using list::list; +}; + +} // namespace scm + +SCM_DECLARE_WRAPPER_TYPE(scm::list); +SCM_DECLARE_WRAPPER_TYPE(scm::args); diff --git a/third_party/immer/extra/guile/scm/scm.hpp b/third_party/immer/extra/guile/scm/scm.hpp new file mode 100644 index 000000000000..f4e4989a44a9 --- /dev/null +++ b/third_party/immer/extra/guile/scm/scm.hpp @@ -0,0 +1,14 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/val.hpp> +#include <scm/list.hpp> +#include <scm/group.hpp> +#include <scm/type.hpp> diff --git a/third_party/immer/extra/guile/scm/type.hpp b/third_party/immer/extra/guile/scm/type.hpp new file mode 100644 index 000000000000..da53ed46ef8b --- /dev/null +++ b/third_party/immer/extra/guile/scm/type.hpp @@ -0,0 +1,153 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/finalizer_wrapper.hpp> +#include <scm/detail/define.hpp> +#include <string> + +namespace scm { +namespace detail { + +template <typename T> +struct foreign_type_storage +{ + static SCM data; +}; + +template <typename T> +SCM foreign_type_storage<T>::data = SCM_UNSPECIFIED; + +template <typename T> +struct convert_foreign_type +{ + using storage_t = foreign_type_storage<T>; + static T& to_cpp(SCM v) + { + assert(storage_t::data != SCM_UNSPECIFIED && + "can not convert to undefined type"); + scm_assert_foreign_object_type(storage_t::data, v); + return *(T*)scm_foreign_object_ref(v, 0); + } + + template <typename U> + static SCM to_scm(U&& v) + { + assert(storage_t::data != SCM_UNSPECIFIED && + "can not convert from undefined type"); + return scm_make_foreign_object_1( + storage_t::data, + new (scm_gc_malloc(sizeof(T), "scmpp")) T( + std::forward<U>(v))); + } +}; + +// Assume that every other type is foreign +template <typename T> +struct convert<T, + std::enable_if_t<!std::is_fundamental<T>::value && + // only value types are supported at + // the moment but the story might + // change later... + !std::is_pointer<T>::value>> + : convert_foreign_type<T> +{ +}; + +template <typename Tag, typename T, int Seq=0> +struct type_definer : move_sequence +{ + using this_t = type_definer; + using next_t = type_definer<Tag, T, Seq + 1>; + + std::string type_name_ = {}; + scm_t_struct_finalize finalizer_ = nullptr; + + type_definer(type_definer&&) = default; + + type_definer(std::string type_name) + : type_name_(std::move(type_name)) + {} + + ~type_definer() + { + if (!moved_from_) { + using storage_t = detail::foreign_type_storage<T>; + assert(storage_t::data == SCM_UNSPECIFIED); + storage_t::data = scm_make_foreign_object_type( + scm_from_utf8_symbol(("<" + type_name_ + ">").c_str()), + scm_list_1(scm_from_utf8_symbol("data")), + finalizer_); + } + } + + template <int Seq2, typename Enable=std::enable_if_t<Seq2 + 1 == Seq>> + type_definer(type_definer<Tag, T, Seq2> r) + : move_sequence{std::move(r)} + , type_name_{std::move(r.type_name_)} + , finalizer_{std::move(r.finalizer_)} + {} + + next_t constructor() && + { + define_impl<this_t>(type_name_, [] { return T{}; }); + return { std::move(*this) }; + } + + template <typename Fn> + next_t constructor(Fn fn) && + { + define_impl<this_t>(type_name_, fn); + return { std::move(*this) }; + } + + next_t finalizer() && + { + finalizer_ = (scm_t_struct_finalize) +finalizer_wrapper<Tag>( + [] (T& x) { x.~T(); }); + return { std::move(*this) }; + } + + template <typename Fn> + next_t finalizer(Fn fn) && + { + finalizer_ = (scm_t_struct_finalize) +finalizer_wrapper<Tag>(fn); + return { std::move(*this) }; + } + + next_t maker() && + { + define_impl<this_t>("make-" + type_name_, [] { return T{}; }); + return { std::move(*this) }; + } + + template <typename Fn> + next_t maker(Fn fn) && + { + define_impl<this_t>("make-" + type_name_, fn); + return { std::move(*this) }; + } + + template <typename Fn> + next_t define(std::string name, Fn fn) && + { + define_impl<this_t>(type_name_ + "-" + name, fn); + return { std::move(*this) }; + } +}; + +} // namespace detail + +template <typename Tag, typename T=Tag> +detail::type_definer<Tag, T> type(std::string type_name) +{ + return { type_name }; +} + +} // namespace scm diff --git a/third_party/immer/extra/guile/scm/val.hpp b/third_party/immer/extra/guile/scm/val.hpp new file mode 100644 index 000000000000..63d7189262da --- /dev/null +++ b/third_party/immer/extra/guile/scm/val.hpp @@ -0,0 +1,88 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#pragma once + +#include <scm/detail/convert.hpp> + +namespace scm { +namespace detail { + +template <typename T> +struct convert_wrapper_type +{ + static T to_cpp(SCM v) { return T{v}; } + static SCM to_scm(T v) { return v.get(); } +}; + +struct wrapper +{ + wrapper() = default; + wrapper(SCM hdl) : handle_{hdl} {} + SCM get() const { return handle_; } + operator SCM () const { return handle_; } + + bool operator==(wrapper other) { return handle_ == other.handle_; } + bool operator!=(wrapper other) { return handle_ != other.handle_; } + +protected: + SCM handle_ = SCM_UNSPECIFIED; +}; + +} // namespace detail + +struct val : detail::wrapper +{ + using base_t = detail::wrapper; + using base_t::base_t; + + template <typename T, + typename = std::enable_if_t< + (!std::is_same<std::decay_t<T>, val>{} && + !std::is_same<std::decay_t<T>, SCM>{})>> + val(T&& x) + : base_t(detail::to_scm(std::forward<T>(x))) + {} + + template <typename T, + typename = std::enable_if_t< + std::is_same<T, decltype(detail::to_cpp<T>(SCM{}))>{}>> + operator T() const { return detail::to_cpp<T>(handle_); } + + template <typename T, + typename = std::enable_if_t< + std::is_same<T&, decltype(detail::to_cpp<T>(SCM{}))>{}>> + operator T& () const { return detail::to_cpp<T>(handle_); } + + template <typename T, + typename = std::enable_if_t< + std::is_same<const T&, decltype(detail::to_cpp<T>(SCM{}))>{}>> + operator const T& () const { return detail::to_cpp<T>(handle_); } + + val operator() () const + { return val{scm_call_0(get())}; } + val operator() (val a0) const + { return val{scm_call_1(get(), a0)}; } + val operator() (val a0, val a1) const + { return val{scm_call_2(get(), a0, a1)}; } + val operator() (val a0, val a1, val a3) const + { return val{scm_call_3(get(), a0, a1, a3)}; } +}; + +} // namespace scm + +#define SCM_DECLARE_WRAPPER_TYPE(cpp_name__) \ + namespace scm { \ + namespace detail { \ + template <> \ + struct convert<cpp_name__> \ + : convert_wrapper_type<cpp_name__> {}; \ + }} /* namespace scm::detail */ \ + /**/ + +SCM_DECLARE_WRAPPER_TYPE(val); |