type_name.h File Reference

Compile-time type name extraction using compiler-specific macros. More...

#include <string_view>
#include "jh/macros/platform.h"

Go to the source code of this file.

Namespaces
namespace	jh::macro
	Internal macro-based utilities.

Functions
template<typename T>
constexpr std::string_view	jh::macro::type_name ()
	Extract the human-readable type name of T at compile time.

Detailed Description

Compile-time type name extraction using compiler-specific macros.

Copyright

Copyright 2025 JeongHan-Bae <mastropseudo@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Full license: GitHub

Author

JeongHan-Bae <mastropseudo@gmail.com>

This header provides jh::macro::type_name<T>(), which extracts the unmangled type name of T from PRETTY_FUNCTION (Clang/GCC) without requiring RTTI.

Design Notes:

• Implemented with compiler-dependent "macro magic".
• No ABI or RTTI dependency — works even with -fno-rtti.
• Only intended for debugging, logging, and diagnostics.
• Do not rely on this in production logic:
  • Output is compiler- and version-specific.
  • Format may change between toolchains.
  • No guarantees of stability across builds.

Usage Example:

std::cout << jh::macro::type_name<int>();            // "int"
std::cout << jh::macro::type_name<array<int, 4>>();  // "jh::pod::array<int, 4>"

Note

Falls back to "unknown" if compiler is unsupported.

Not suitable for serialization or program logic.

Version

1.3.x

Date

2025