40 lines
1.4 KiB
C++
40 lines
1.4 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 <memory>
|
|
#include "context.h"
|
|
#include "options.h"
|
|
|
|
namespace lean {
|
|
/** \brief Abstract class for formatting expressions. */
|
|
class expr_formatter {
|
|
public:
|
|
virtual ~expr_formatter() {}
|
|
/** \brief Convert expression in the given context into a format object. */
|
|
virtual format operator()(expr const & e, context const & c = context()) = 0;
|
|
/** \brief format a definition. */
|
|
virtual format operator()(char const * kwd, name const & n, expr const & t, expr const & v);
|
|
/** \brief format a postulate. */
|
|
virtual format operator()(char const * kwd, name const & n, expr const & t);
|
|
|
|
/** \brief Return options for pretty printing. */
|
|
virtual options get_options() const = 0;
|
|
|
|
void pp(std::ostream & out, expr const & e, context const & c);
|
|
void pp(std::ostream & out, expr const & e);
|
|
|
|
/** \brief Nest the given format object using the setting provided by get_options. */
|
|
format nest(format const & f);
|
|
};
|
|
|
|
/**
|
|
\brief Create simple expression formatter.
|
|
It is mainly useful for pretty printing.
|
|
*/
|
|
std::shared_ptr<expr_formatter> mk_simple_expr_formatter();
|
|
std::ostream & operator<<(std::ostream & out, std::pair<expr_formatter &, expr const &> const & p);
|
|
}
|