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// Copyright 2018-2024 Emil Dotchevski and Reverge Studios, Inc.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
# include "leaf.hpp"
#else
# include <boost/leaf/config.hpp>
# include <boost/leaf/diagnostics.hpp>
# include <boost/leaf/on_error.hpp>
# include <boost/leaf/result.hpp>
#endif
#if BOOST_LEAF_CFG_STD_STRING
# include <sstream>
# include <iostream>
#endif
#include <vector>
#include "lightweight_test.hpp"
namespace leaf = boost::leaf;
struct my_error
{
std::vector<int> vec;
void append(int x)
{
vec.push_back(x);
}
friend std::ostream & operator<<( std::ostream & os, my_error const & x )
{
for( auto const & e : x.vec )
os << "appended: " << e << std::endl;
return os;
}
};
leaf::result<void> f1()
{
auto ctx_ = leaf::on_error([](my_error & e) {e.append(42);});
return leaf::new_error("new_error");
}
leaf::result<void> f2()
{
auto ctx_ = leaf::on_error([](my_error & e) {e.append(43);});
return f1();
}
int main()
{
leaf::try_handle_all([]() -> leaf::result<void>
{
return f2();
},
[](leaf::diagnostic_details const & e)
{
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream st;
st << e;
std::string s = st.str();
std::cout << s << std::endl;
if( BOOST_LEAF_CFG_DIAGNOSTICS && BOOST_LEAF_CFG_CAPTURE )
{
BOOST_TEST_NE(s.find("new_error"), s.npos);
BOOST_TEST_NE(s.find("appended: 42"), s.npos);
BOOST_TEST_NE(s.find("appended: 43"), s.npos);
}
#endif
} );
return boost::report_errors();
}
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