//
// gapbind14
// Copyright (C) 2020-2022 James D. Mitchell
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/ >.
//
#ifndef INCLUDE_GAPBIND14_TO_GAP_HPP_
#define INCLUDE_GAPBIND14_TO_GAP_HPP_
#include <cstddef> // for size_t
#include <string> // for string
#include <type_traits> // for enable_if_t, is_integral, is_same
#include <utility> // for pair
#include <vector> // for vector
#include "gap_include.hpp" // for Obj, UInt
namespace gapbind14 {
template <typename T>
struct IsGapBind14Type;
using gap_tnum_type = UInt;
template <typename T, typename = void >
struct to_gap;
template <typename T>
struct to_gap<
T&,
std::enable_if_t<!IsGapBind14Type<T>::value && !std::is_const<T>::value>>
: to_gap<T> {};
template <typename T>
struct to_gap<T const &, std::enable_if_t<!IsGapBind14Type<T>::value>>
: to_gap<T> {};
template <typename T>
struct to_gap<T&&, std::enable_if_t<!IsGapBind14Type<T>::value>> : to_gap<T> {
};
////////////////////////////////////////////////////////////////////////
// Obj
////////////////////////////////////////////////////////////////////////
template <>
struct to_gap<Obj> {
using cpp_type = Obj;
Obj operator ()(Obj x) const noexcept {
return x;
}
};
////////////////////////////////////////////////////////////////////////
// Strings
////////////////////////////////////////////////////////////////////////
template <>
struct to_gap<std::string> {
using cpp_type = std::string;
static gap_tnum_type constexpr gap_type = T_STRING;
Obj operator ()(std::string const & str) const {
return MakeStringWithLen(str.c_str(), str.length());
}
};
////////////////////////////////////////////////////////////////////////
// Integers
////////////////////////////////////////////////////////////////////////
template <typename T>
struct to_gap<T,
std::enable_if_t<std::is_integral<T>::value
&& !std::is_same<T, bool >::value>> {
using cpp_type = T;
static gap_tnum_type constexpr gap_type = T_INT;
Obj operator ()(T&& i) const {
return INTOBJ_INT(i);
}
Obj operator ()(T const & i) const {
return INTOBJ_INT(i);
}
};
////////////////////////////////////////////////////////////////////////
// Bools
////////////////////////////////////////////////////////////////////////
template <>
struct to_gap<bool > {
using cpp_type = bool ;
static gap_tnum_type constexpr gap_type = T_BOOL;
Obj operator ()(bool && val) const noexcept {
return (val ? True : False );
}
Obj operator ()(bool const & val) const noexcept {
return (val ? True : False );
}
};
////////////////////////////////////////////////////////////////////////
// Vectors
////////////////////////////////////////////////////////////////////////
template <typename T>
struct to_gap<std::vector<T>> {
using cpp_type = std::vector<T>;
static gap_tnum_type constexpr gap_type = T_PLIST_HOM;
Obj operator ()(std::vector<T> const & v) const {
Obj result = NEW_PLIST(T_PLIST_HOM, v.size());
SET_LEN_PLIST(result, v.size());
using value_type = typename std::vector<T>::value_type;
size_t index = 1;
for (auto const & item : v) {
AssPlist(result, index++, to_gap<value_type>()(item));
}
return result;
}
};
////////////////////////////////////////////////////////////////////////
// Pairs
////////////////////////////////////////////////////////////////////////
template <typename S, typename T>
struct to_gap<std::pair<S, T>> {
using cpp_type = std::pair<S, T>;
static gap_tnum_type constexpr gap_type = T_PLIST;
Obj operator ()(std::pair<S, T> const & p) const {
Obj result = NEW_PLIST(T_PLIST, 2);
SET_LEN_PLIST(result, 2);
AssPlist(result, 1, to_gap<S>()(p.first));
AssPlist(result, 2, to_gap<T>()(p.second));
return result;
}
};
} // namespace gapbind14
#endif // INCLUDE_GAPBIND14_TO_GAP_HPP_
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