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Support gcc -fno-pretty-templates (#258)

Browse source 
https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-fno-pretty-templates

The gcc option -fno-pretty-templates changes the __PRETTY_FUNCTION__ from e.g.
"auto n() [with E = E]" to "auto n<E>()" (more like MSVC).

Pass the entire __PRETTY_FUNCTION__ / __FUNCSIG__ to pretty_name(), and truncate it there, checking the last character if necessary to determine the format used.
This commit is contained in:
Ed Catmur 2023-05-13 04:15:23 -05:00 • committed by GitHub
parent d4fa0c3dd3
commit 5367f5183c
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 2 deletions
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12
include/magic_enum.hpp
View file

@ -425,8 +425,12 @@ constexpr auto n() noexcept {
#if defined(MAGIC_ENUM_GET_TYPE_NAME_BUILTIN)
constexpr auto name_ptr = MAGIC_ENUM_GET_TYPE_NAME_BUILTIN(E);
constexpr auto name = name_ptr ? string_view{ name_ptr } : std::string_view{};
#elif defined(__clang__) || defined(__GNUC__)
#elif defined(__clang__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(__GNUC__)
auto name = string_view{__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1};
name.remove_suffix(name[name.size() - 1] == ']' ? 1 : 3);
name = pretty_name(name);
#elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
#else
@ -469,8 +473,12 @@ constexpr auto n() noexcept {
#if defined(MAGIC_ENUM_GET_ENUM_NAME_BUILTIN)
constexpr auto name_ptr = MAGIC_ENUM_GET_ENUM_NAME_BUILTIN(V);
constexpr auto name = name_ptr ? string_view{ name_ptr } : std::string_view{};
#elif defined(__clang__) || defined(__GNUC__)
#elif defined(__clang__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(__GNUC__)
auto name = string_view{__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1};
name.remove_suffix(name[name.size() - 1] == ']' ? 1 : 3);
name = pretty_name(name);
#elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
#else

1
test/test_aliases.cpp
View file

@ -76,6 +76,7 @@ struct MyStringView {
constexpr std::size_t find(char c) const { return str.find(c); } // required
constexpr MyStringView substr(std::size_t p, std::size_t n) { return str.substr(p, n); } // required
constexpr void remove_prefix(std::size_t n) { str.remove_prefix(n); } // required
constexpr void remove_suffix(std::size_t n) { str.remove_suffix(n); } // required
friend constexpr bool operator==(MyStringView lhs, MyStringView rhs); // required
constexpr MyStringView(const char* cstr) : str{ cstr } {}