sol2/sol/demangle.hpp

// The MIT License (MIT)

// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors

// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
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// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:

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#ifndef SOL_DEMANGLE_HPP
#define SOL_DEMANGLE_HPP

#include <string>
#include <array>
#include <cstdlib>

#if defined(__GNUC__) || defined(__clang__)
#include <cxxabi.h>
#endif

namespace sol {
namespace detail {
#ifdef _MSC_VER
inline std::string get_type_name(const std::type_info& id) {
    return id.name();
}

#elif defined(__GNUC__) || defined(__clang__)
inline std::string get_type_name(const std::type_info& id) {
    int status;
    char* unmangled = abi::__cxa_demangle(id.name(), 0, 0, &status);
    std::string realname = unmangled;
    std::free(unmangled);
    return realname;
}

#else
#error Compiler not supported for demangling
#endif // compilers

inline std::string demangle(const std::type_info& id) {
    std::string realname = get_type_name(id);
    const static std::array<std::string, 2> removals = {{ "struct ", "class " }};
    const static std::array<std::string, 2> replacements = {{ "::", "_" }};
    for(std::size_t r = 0; r < removals.size(); ++r) {
        auto found = realname.find(removals[r]);
        while(found != std::string::npos) {
            realname.erase(found, removals[r].size());
            found = realname.find(removals[r]);
       }
    }

    for(std::size_t r = 0; r < replacements.size(); r+=2) {
        auto found = realname.find(replacements[r]);
        while(found != std::string::npos) {
            realname.replace(found, replacements[r].size(), replacements[r + 1]);
            found = realname.find(replacements[r], found);
        }
    }

    return realname;
}
} // detail
} // sol

#endif // SOL_DEMANGLE_HPP