60 lines
2 KiB
C++
60 lines
2 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 "kernel/io_state.h"
|
|
|
|
namespace lean {
|
|
/**
|
|
\brief Base class for \c regular and \c diagnostic wrapper classes.
|
|
*/
|
|
class io_state_stream {
|
|
protected:
|
|
io_state const & m_io_state;
|
|
public:
|
|
io_state_stream(io_state const & s):m_io_state(s) {}
|
|
virtual std::ostream & get_stream() const = 0;
|
|
void flush() { get_stream().flush(); }
|
|
formatter get_formatter() const { return m_io_state.get_formatter(); }
|
|
options get_options() const { return m_io_state.get_options(); }
|
|
};
|
|
|
|
/**
|
|
\brief Wrapper for the io_state object that provides access to the
|
|
io_state's regular channel
|
|
*/
|
|
class regular : public io_state_stream {
|
|
public:
|
|
regular(io_state const & s):io_state_stream(s) {}
|
|
std::ostream & get_stream() const { return m_io_state.get_regular_channel().get_stream(); }
|
|
};
|
|
|
|
/**
|
|
\brief Wrapper for the io_state object that provides access to the
|
|
io_state's diagnostic channel
|
|
*/
|
|
class diagnostic : public io_state_stream {
|
|
public:
|
|
diagnostic(io_state const & s):io_state_stream(s) {}
|
|
std::ostream & get_stream() const { return m_io_state.get_diagnostic_channel().get_stream(); }
|
|
};
|
|
|
|
// hack for using std::endl with channels
|
|
struct endl_class { endl_class() {} };
|
|
const endl_class endl;
|
|
|
|
class kernel_exception;
|
|
|
|
io_state_stream const & operator<<(io_state_stream const & out, endl_class);
|
|
io_state_stream const & operator<<(io_state_stream const & out, expr const & e);
|
|
io_state_stream const & operator<<(io_state_stream const & out, object const & obj);
|
|
io_state_stream const & operator<<(io_state_stream const & out, environment const & env);
|
|
io_state_stream const & operator<<(io_state_stream const & out, kernel_exception const & ex);
|
|
template<typename T> io_state_stream const & operator<<(io_state_stream const & out, T const & t) {
|
|
out.get_stream() << t;
|
|
return out;
|
|
}
|
|
}
|