35 lines
1.2 KiB
C++
35 lines
1.2 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 <utility>
|
|
#include "util/sexpr/format.h"
|
|
#include "kernel/expr.h"
|
|
|
|
namespace lean {
|
|
/**
|
|
\brief Abstract class for providing expression position information (line number and column).
|
|
*/
|
|
class pos_info_provider {
|
|
public:
|
|
virtual ~pos_info_provider() {}
|
|
/**
|
|
\brief Return the line number and position associated with the given expression.
|
|
Throws an exception if the given expression does not have this kind of information associated with it.
|
|
*/
|
|
virtual std::pair<unsigned, unsigned> get_pos_info(expr const & e) const = 0;
|
|
virtual char const * get_file_name() const;
|
|
virtual std::pair<unsigned, unsigned> get_some_pos() const = 0;
|
|
|
|
unsigned get_line(expr const & e) const { return get_pos_info(e).first; }
|
|
unsigned get_pos(expr const & e) const { return get_pos_info(e).second; }
|
|
/**
|
|
\brief Pretty print position information for the given expression.
|
|
Return a null format object if expression is not associated with position information.
|
|
*/
|
|
virtual format pp(expr const & e) const;
|
|
};
|
|
}
|