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//
// 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
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