TypeName.h

Go to the documentation of this file.

/*
 * This file is a part of the Biology project by eons LLC.
 * Biology (aka Develop Biology) is a framework for approaching software
 * development from a natural sciences perspective.
 *
 * Copyright (C) 2021 Séon O'Shannon & eons LLC
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <string>
 
//Modified from: https://stackoverflow.com/questions/35941045/can-i-obtain-c-type-names-in-a-constexpr-way
namespace bio {
 
template < typename T >
const std::string TypeName();
 
template <>
inline const std::string TypeName< void >()
{
    return "void";
}
 
typedef void TypeNameProber;
 
template < typename T >
static const std::string WrappedTypeName()
{
    #ifdef __clang__
    return __PRETTY_FUNCTION__;
    #elif defined(__GNUC__)
    return __PRETTY_FUNCTION__;
    #elif defined(_MSC_VER)
    return __FUNCSIG__;
    #else
        #error "Unsupported compiler"
    #endif
}
 
static const std::size_t WrappedTypeNamePrefixLength()
{
    return WrappedTypeName< TypeNameProber >().find(TypeName< TypeNameProber >());
}
 
static const std::size_t WrappedTypeNameSuffixLength()
{
    return WrappedTypeName< TypeNameProber >().length() - WrappedTypeNamePrefixLength() - TypeName< TypeNameProber >().length();
}
 
template < typename T >
static const std::string TypeName()
{
    static const std::string wrappedName = WrappedTypeName< T >();
    static const std::size_t prefixLength = WrappedTypeNamePrefixLength();
    static const std::size_t suffixLength = WrappedTypeNameSuffixLength();
    static const std::size_t typeNameLength = wrappedName.length() - prefixLength - suffixLength;
    return wrappedName.substr(
        prefixLength,
        typeNameLength
    );
}
 
template < typename T >
const std::string TypeName(const T t)
{
    return TypeName< T >();
}
 
} //bio namespace