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falsycat/source_location.hh

Last active March 17, 2022 03:21
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std::source_location implementation for Clang (MIT)
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source_location.hh
#pragma once
#if defined(__clang__)
#include <cstdint>
namespace std {
// source_location impl for Clang
// reference:
// https://github.com/paweldac/source_location/blob/ff0002f92cdde3576ce02048dd9eb7823cabdc7b/include/source_location/source_location.hpp
struct source_location {
public:
static constexpr source_location current(
const char* file = __builtin_FILE(),
const char* func = __builtin_FUNCTION(),
uint_least32_t line = __builtin_LINE(),
uint_least32_t col = __builtin_COLUMN()) noexcept {
return source_location(file, func, line, col);
}
source_location(const source_location&) = default;
source_location(source_location&&) = default;
source_location& operator=(const source_location&) = default;
source_location& operator=(source_location&&) = default;
constexpr const char* file_name() const noexcept { return file_; }
constexpr const char* function_name() const noexcept { return func_; }
constexpr uint_least32_t line() const noexcept { return line_; }
constexpr std::uint_least32_t column() const noexcept { return col_; }
private:
constexpr source_location(
const char* file, const char* func, uint_least32_t line, uint_least32_t col) noexcept :
file_(file), func_(func), line_(line), col_(col) {
}
const char* file_;
const char* func_;
uint_least32_t line_;
uint_least32_t col_;
};
} // namespace std
#else
# include <source_location>
#endif
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