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5a48d7456f
Changes: 1) `#include <boost/pfr...` is now implicitly does `import boost.pfr` if the modules are supported 2) CI now tests modules on Ubuntu 24.04 with existing runtime tests 3) Renamed module to `boost.pfr` 4) CMakeLists.txt now uses modules for `Boost::pfr` target if modules are supported 5) All the library internals now have unconditional module level linkage. `1)` allows users to mix `#include <boost/pfr...` and `import boost.pfr` in user code without ODR-violations. Significant differences from https://anarthal.github.io/cppblog/modules3: * PFR uses a `BOOST_PFR_USE_STD_MODULE` macro for `import std;` / `includes` while building module. This allows to use `boost.pfr` module in C++20 and even without usable `std` module.
33 lines
853 B
C++
33 lines
853 B
C++
// Copyright (c) 2016-2025 Antony Polukhin
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// To compile manually use a command like the folowing:
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// clang++ -std=c++20 -fmodule-file=pfr.pcm pfr.pcm usage_sample.cpp
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#include <iostream>
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#include <iomanip>
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import boost.pfr;
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struct some_person {
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std::string name;
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unsigned birth_year;
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};
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void mu1_act();
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int main() {
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mu1_act();
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some_person val{"Joseph Brodsky", 1940};
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std::cout << boost::pfr::get<0>(val) // No macro!
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<< " was born in " << boost::pfr::get<1>(val); // Works with any aggregate!
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std::cout << '\n' << boost::pfr::io(val);
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std::cout << "\n." << boost::pfr::get_name<0, some_person>()
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<< '=' << val.name << '\n';
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}
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