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#pragma once
#include "compat/assert.hpp"
#include "compat/pretty-function.hpp"
#include <cr/StringView.h>
template<typename T>
static constexpr auto _fm_internal_type_name_of() // NOLINT(bugprone-reserved-identifier)
{
using namespace floormat;
using SVF = StringViewFlag;
constexpr auto my_strlen = [](const char* str) constexpr -> size_t {
const char* start = str;
for (; *str; str++)
;
return (size_t)(str - start);
};
constexpr auto strip_prefix = [](StringView& s, StringView pfx) constexpr {
if (s.size() < pfx.size())
return false;
for (auto i = 0uz; i < pfx.size(); i++)
if (s[i] != pfx[i])
return false;
s = StringView{ s.data() + pfx.size(), s.size() - pfx.size(), s.flags() };
return true;
};
constexpr auto strip_suffix = [](StringView& s, StringView suffix) constexpr {
if (s.size() < suffix.size())
return false;
const auto ssiz = s.size(), sufsiz = suffix.size();
for (auto i = 0uz; i < sufsiz; i++)
if (s[ssiz - 1 - i] != suffix[sufsiz - 1 - i])
return false;
s = StringView{ s.data(), ssiz - sufsiz, s.flags() };
return true;
};
const char* str = FM_PRETTY_FUNCTION;
auto s = StringView{ str, my_strlen(str), SVF::Global|SVF::NullTerminated };
strip_prefix(s, "constexpr "_s);
if (strip_prefix(s, "auto "_s))
{
#ifdef _WIN32
strip_prefix(s, "__cdecl "_s);
#endif
#ifdef _MSC_VER
if (strip_prefix(s, "_fm_internal_type_name_of<"_s))
{
strip_prefix(s, "struct "_s) || strip_prefix(s, "class "_s);
strip_suffix(s, "(void)"_s);
bool ret = strip_suffix(s, ">"_s);
fm_assert(ret);
// todo s/\b(?:class|struct)\b//g
}
#endif
#if defined __GNUG__ || defined __clang__
if (strip_prefix(s, "_fm_internal_type_name_of()"_s))
{
if (strip_prefix(s, " [with T = "_s) || strip_prefix(s, " [T = "_s))
{
bool ret = strip_suffix(s, "]"_s);
fm_assert(ret);
}
}
#endif
}
return s;
}
namespace floormat {
template<typename T> constexpr StringView name_of = ::_fm_internal_type_name_of<T>();
} // namespace floormat
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