lean2/src/library/io_state.h
2014-09-23 10:45:14 -07:00

50 lines
1.9 KiB
C++

/*
Copyright (c) 2013 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#pragma once
#include "util/output_channel.h"
#include "util/sexpr/options.h"
#include "kernel/expr.h"
namespace lean {
/**
\brief State provided to internal lean procedures that need to:
1- Access user defined options
2- Produce verbosity messages
3- Output results
4- Produce formatted output
*/
class io_state {
options m_options;
formatter_factory m_formatter_factory;
std::shared_ptr<output_channel> m_regular_channel;
std::shared_ptr<output_channel> m_diagnostic_channel;
public:
io_state();
io_state(formatter_factory const & fmtf);
io_state(options const & opts, formatter_factory const & fmtf);
io_state(io_state const & ios, std::shared_ptr<output_channel> const & r, std::shared_ptr<output_channel> const d);
io_state(io_state const & ios, options const & o);
~io_state();
options get_options() const { return m_options; }
formatter_factory const & get_formatter_factory() const { return m_formatter_factory; }
output_channel & get_regular_channel() const { return *m_regular_channel; }
output_channel & get_diagnostic_channel() const { return *m_diagnostic_channel; }
void set_regular_channel(std::shared_ptr<output_channel> const & out);
void set_diagnostic_channel(std::shared_ptr<output_channel> const & out);
void set_options(options const & opts);
void set_formatter_factory(formatter_factory const & f);
template<typename T> void set_option(name const & n, T const & v) {
set_options(get_options().update(n, v));
}
};
/** \brief Return a dummy io_state that is meant to be used in contexts that require an io_state, but it is not really used */
io_state const & get_dummy_ios();
void initialize_io_state();
void finalize_io_state();
}