FM / detail

/usr/include/boost/histogram/detail

Name	Size	Mode	Actions
accumulator_traits.hpp	2812	0644	edit dl rm
args_type.hpp	1546	0644	edit dl rm
argument_traits.hpp	2548	0644	edit dl rm
array_wrapper.hpp	2050	0644	edit dl rm
axes.hpp	13362	0644	edit dl rm
common_type.hpp	1335	0644	edit dl rm
convert_integer.hpp	566	0644	edit dl rm
counting_streambuf.hpp	1923	0644	edit dl rm
detect.hpp	8320	0644	edit dl rm
fill.hpp	12609	0644	edit dl rm
fill_n.hpp	13696	0644	edit dl rm
index_translator.hpp	3437	0644	edit dl rm
iterator_adaptor.hpp	4484	0644	edit dl rm
large_int.hpp	6543	0644	edit dl rm
limits.hpp	986	0644	edit dl rm
linearize.hpp	4482	0644	edit dl rm
make_default.hpp	710	0644	edit dl rm
mutex_base.hpp	1228	0644	edit dl rm
nonmember_container_access.hpp	1448	0644	edit dl rm
operators.hpp	4494	0644	edit dl rm
optional_index.hpp	1426	0644	edit dl rm
priority.hpp	593	0644	edit dl rm
reduce_command.hpp	2541	0644	edit dl rm
relaxed_equal.hpp	1217	0644	edit dl rm
relaxed_tuple_size.hpp	956	0644	edit dl rm
replace_type.hpp	818	0644	edit dl rm
safe_comparison.hpp	2519	0644	edit dl rm
span.hpp	9048	0644	edit dl rm
static_if.hpp	1477	0644	edit dl rm
sub_array.hpp	3577	0644	edit dl rm
try_cast.hpp	1575	0644	edit dl rm
tuple_slice.hpp	1019	0644	edit dl rm
type_name.hpp	1083	0644	edit dl rm
variant_proxy.hpp	2430	0644	edit dl rm

Edit: /usr/include/boost/histogram/detail/try_cast.hpp (1575B)

// Copyright 2019 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_HISTOGRAM_DETAIL_TRY_CAST_HPP
#define BOOST_HISTOGRAM_DETAIL_TRY_CAST_HPP

#include <boost/config.hpp> // BOOST_NORETURN
#include <boost/throw_exception.hpp>
#include <type_traits>

namespace boost {
namespace histogram {
namespace detail {

template <class T, class U>
constexpr T* ptr_cast(U*) noexcept {
  return nullptr;
}

template <class T>
constexpr T* ptr_cast(T* p) noexcept {
  return p;
}

template <class T>
constexpr const T* ptr_cast(const T* p) noexcept {
  return p;
}

template <class T, class E, class U>
BOOST_NORETURN T try_cast_impl(std::false_type, std::false_type, U&&) {
  BOOST_THROW_EXCEPTION(E("type cast error"));
}

// converting cast
template <class T, class E, class U>
T try_cast_impl(std::false_type, std::true_type, U&& u) noexcept {
  return static_cast<T>(u); // cast to avoid warnings
}

// pass-through cast
template <class T, class E>
T&& try_cast_impl(std::true_type, std::true_type, T&& t) noexcept {
  return std::forward<T>(t);
}

// cast fails at runtime with exception E instead of compile-time, T must be a value
template <class T, class E, class U>
T try_cast(U&& u) noexcept(std::is_convertible<U, T>::value) {
  return try_cast_impl<T, E>(std::is_same<U, T>{}, std::is_convertible<U, T>{},
                             std::forward<U>(u));
}

} // namespace detail
} // namespace histogram
} // namespace boost

#endif

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