lean2/src/kernel/io_state.h

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/*
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/formatter.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 m_formatter;
std::shared_ptr<output_channel> m_regular_channel;
std::shared_ptr<output_channel> m_diagnostic_channel;
public:
io_state(formatter const & fmt);
io_state(options const & opts, formatter const & fmt);
~io_state();
options get_options() const { return m_options; }
formatter get_formatter() const { return m_formatter; }
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(formatter const & f);
template<typename T> void set_option(name const & n, T const & v) {
set_options(get_options().update(n, v));
}
};
}