mirror of
https://github.com/ProgramSnail/lang_modes_check.git
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40 lines
842 B
C++
40 lines
842 B
C++
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#pragma once
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#include <source_location>
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#include <string>
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namespace utils {
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using namespace std;
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// C++ 23
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[[noreturn]] inline void unreachable() {
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// Uses compiler specific extensions if possible.
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// Even if no extension is used, undefined behavior is still raised by
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// an empty function body and the noreturn attribute.
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#if defined(_MSC_VER) && !defined(__clang__) // MSVC
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__assume(false);
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#else // GCC, Clang
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__builtin_unreachable();
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#endif
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}
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// -----------------
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// visitor helper
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template <typename... Ts> struct overloaded : Ts... {
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using Ts::operator()...;
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};
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struct Error {
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string message;
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source_location location;
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};
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inline void throw_error(string message,
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source_location location = source_location::current()) {
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throw Error{std::move(message), location};
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}
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} // namespace utils
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