sharg
1.0.0
THE argument parser for bio-c++ tools.
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type_name_as_string.hpp
Go to the documentation of this file.
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// --------------------------------------------------------------------------------------------------------
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// Copyright (c) 2006-2022, Knut Reinert & Freie Universität Berlin
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// Copyright (c) 2016-2022, Knut Reinert & MPI für molekulare Genetik
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// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
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// shipped with this file and also available at: https://github.com/seqan/sharg-parser/blob/main/LICENSE.md
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// --------------------------------------------------------------------------------------------------------
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#pragma once
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#if defined(__GNUC__) || defined(__clang__)
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# include <cxxabi.h>
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#endif
// defined(__GNUC__) || defined(__clang__)
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#include <
functional
>
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#include <
memory
>
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#include <
string
>
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#include <
typeinfo
>
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#include <
sharg/platform.hpp
>
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namespace
sharg::detail
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{
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template
<
typename
type>
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inline
std::string
const
type_name_as_string = []()
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{
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std::string
demangled_name{};
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#if defined(__GNUC__) || defined(__clang__)
// clang and gcc only return a mangled name.
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using
safe_ptr_t =
std::unique_ptr
<char,
std::function
<void(
char
*)>>;
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// https://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.3/a01696.html
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int
status
{};
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safe_ptr_t demangled_name_ptr{abi::__cxa_demangle(
typeid
(type).name(), 0, 0, &status),
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[](
char
* name_ptr)
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{
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free
(name_ptr);
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}};
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// We exclude status != 0, because this code can't be reached normally, only if there is a defect in the compiler
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// itself, since the type is directly given by the compiler. See https://github.com/seqan/seqan3/pull/2311.
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// LCOV_EXCL_START
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// clang-format off
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if
(status != 0)
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return
std::string
{
typeid
(type).name()} +
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" (abi::__cxa_demangle error status ("
+
std::to_string
(status) +
"): "
+
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(
status
== -1 ?
"A memory allocation failure occurred."
:
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(
status
== -2 ?
"mangled_name is not a valid name under the C++ ABI mangling rules."
:
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(
status
== -3 ?
"One of the arguments is invalid."
:
"Unknown Error"
))) +
")"
;
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// clang-format on
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// LCOV_EXCL_STOP
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demangled_name =
std::string
{
std::addressof
(*demangled_name_ptr)};
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#else
// e.g. MSVC
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demangled_name =
typeid
(type).name();
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#endif
// defined(__GNUC__) || defined(__clang__)
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if
constexpr
(std::is_const_v<std::remove_reference_t<type>>)
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demangled_name +=
" const"
;
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if
constexpr
(std::is_lvalue_reference_v<type>)
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demangled_name +=
" &"
;
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if
constexpr
(std::is_rvalue_reference_v<type>)
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demangled_name +=
" &&"
;
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return
demangled_name;
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}();
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}
// namespace sharg::detail
std::addressof
T addressof(T... args)
std::string
std::free
T free(T... args)
std::function
functional
memory
platform.hpp
Provides platform and dependency checks.
std::experimental::filesystem::status
T status(T... args)
string
std::to_string
T to_string(T... args)
typeinfo
std::unique_ptr
Version:
main_user
main_dev
1.1.1
1.1.0
1.0.0
sharg
detail
type_name_as_string.hpp
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