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/*
* This source code is released into the public domain.
*/
module;
#include <coroutine>
#include <expected>
#include <iostream>
#include <string>
module nihil.config;
import nihil;
import nihil.ucl;
namespace nihil::config {
option::option(std::string_view name, std::string_view description)
: m_name(name)
, m_description(description)
{
auto okay = store::get().register_option(this);
if (okay)
return;
std::print(std::cerr,
"INTERNAL ERROR: failed to register "
"configuration option '{}': {}",
m_name, okay.error());
std::exit(1);
}
option::~option()
{
std::ignore = store::get().unregister_option(this);
}
auto option::name(this option const &self) noexcept
-> std::string_view
{
return self.m_name;
}
auto option::description(this option const &self) noexcept
-> std::string_view
{
return self.m_description;
}
auto option::is_default(this option const &self) noexcept
-> bool
{
return self.m_is_default;
}
auto option::is_default(this option &self, bool b) -> void
{
self.m_is_default = b;
}
auto option::string(this option const &self) -> std::string
{
return self.get_string();
}
auto option::string(this option &self, std::string_view value)
-> std::expected<void, error>
{
co_await self.set_string(value);
self.is_default(false);
co_return {};
}
auto option::ucl(this option const &self)
-> std::expected<nihil::ucl::object, error>
{
return self.get_ucl();
}
auto option::ucl(this option &self, nihil::ucl::object const &value)
-> std::expected<void, error>
{
co_await self.set_ucl(value);
self.is_default(false);
co_return {};
}
auto operator<<(std::ostream &strm, option const &opt)
-> std::ostream &
{
return strm << "<" << opt.name() << "=" << opt.string() << ">";
}
} // namespace nihil
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