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#include <kapi/system.hpp>
#include <kapi/cpu.hpp>
#include <kstd/print.hpp>
#include <kstd/system_error.hpp>
#include <source_location>
#include <string_view>
namespace kapi::system
{
namespace
{
auto panic_write(kstd::error_code error) -> void
{
kstd::print(kstd::print_sink::stderr, " ({}) ", error);
}
} // namespace
namespace detail
{
panic_buffer::~panic_buffer()
{
flush();
}
void panic_buffer::append(char character)
{
m_buffer[m_written++] = character;
if (m_written == m_buffer.size())
{
flush();
}
}
void panic_buffer::flush()
{
if (m_written > 0)
{
panic_write(std::string_view{m_buffer.data(), m_written});
m_written = 0;
}
}
panic_iterator::panic_iterator(panic_buffer & buffer)
: m_buffer(&buffer)
{}
auto panic_iterator::operator*() noexcept -> panic_iterator &
{
return *this;
}
auto panic_iterator::operator=(char character) -> panic_iterator &
{
m_buffer->append(character);
return *this;
}
auto panic_iterator::operator++() -> panic_iterator &
{
return *this;
}
auto panic_iterator::operator++(int) -> panic_iterator
{
return *this;
}
} // namespace detail
[[gnu::weak]]
auto panic(std::string_view message, std::source_location location) -> void
{
panic_start(location);
panic_write(message);
panic_finish(location);
}
[[gnu::weak]]
auto panic(std::string_view message, kstd::error_code error, std::source_location location) -> void
{
panic_start(location);
panic_write(message);
panic_write(error);
panic_finish(location);
}
auto panic_start(std::source_location location) -> void
{
kstd::print(kstd::print_sink::stderr, "[PANIC] in '{}': ", location.function_name());
}
auto panic_write(std::string_view message) -> void
{
kstd::print(kstd::print_sink::stderr, "{}", message);
}
auto panic_finish(std::source_location location) -> void
{
kstd::println(kstd::print_sink::stderr, " @ {}:{}", location.file_name(), location.line());
cpu::halt();
}
} // namespace kapi::system
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