knotkit/rd_parser/location.hh

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/* A Bison parser, made by GNU Bison 2.7. */
/* Locations for Bison parsers in C++
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Copyright (C) 2002-2007, 2009-2012 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* As a special exception, you may create a larger work that contains
part or all of the Bison parser skeleton and distribute that work
under terms of your choice, so long as that work isn't itself a
parser generator using the skeleton or a modified version thereof
as a parser skeleton. Alternatively, if you modify or redistribute
the parser skeleton itself, you may (at your option) remove this
special exception, which will cause the skeleton and the resulting
Bison output files to be licensed under the GNU General Public
License without this special exception.
This special exception was added by the Free Software Foundation in
version 2.2 of Bison. */
/**
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** \file rd_parser/location.hh
** Define the yy::location class.
*/
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#ifndef YY_YY_RD_PARSER_LOCATION_HH_INCLUDED
# define YY_YY_RD_PARSER_LOCATION_HH_INCLUDED
# include "position.hh"
namespace yy {
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/* Line 166 of location.cc */
#line 47 "rd_parser/location.hh"
/// Abstract a location.
class location
{
public:
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/// Construct a location from \a b to \a e.
location (const position& b, const position& e)
: begin (b)
, end (e)
{
}
/// Construct a 0-width location in \a p.
explicit location (const position& p = position ())
: begin (p)
, end (p)
{
}
/// Construct a 0-width location in \a f, \a l, \a c.
explicit location (std::string* f,
unsigned int l = 1u,
unsigned int c = 1u)
: begin (f, l, c)
, end (f, l, c)
{
}
/// Initialization.
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void initialize (std::string* f = YY_NULL,
unsigned int l = 1u,
unsigned int c = 1u)
{
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begin.initialize (f, l, c);
end = begin;
}
/** \name Line and Column related manipulators
** \{ */
public:
/// Reset initial location to final location.
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void step ()
{
begin = end;
}
/// Extend the current location to the COUNT next columns.
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void columns (unsigned int count = 1)
{
end += count;
}
/// Extend the current location to the COUNT next lines.
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void lines (unsigned int count = 1)
{
end.lines (count);
}
/** \} */
public:
/// Beginning of the located region.
position begin;
/// End of the located region.
position end;
};
/// Join two location objects to create a location.
inline const location operator+ (const location& begin, const location& end)
{
location res = begin;
res.end = end.end;
return res;
}
/// Add two location objects.
inline const location operator+ (const location& begin, unsigned int width)
{
location res = begin;
res.columns (width);
return res;
}
/// Add and assign a location.
inline location& operator+= (location& res, unsigned int width)
{
res.columns (width);
return res;
}
/// Compare two location objects.
inline bool
operator== (const location& loc1, const location& loc2)
{
return loc1.begin == loc2.begin && loc1.end == loc2.end;
}
/// Compare two location objects.
inline bool
operator!= (const location& loc1, const location& loc2)
{
return !(loc1 == loc2);
}
/** \brief Intercept output stream redirection.
** \param ostr the destination output stream
** \param loc a reference to the location to redirect
**
** Avoid duplicate information.
*/
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template <typename YYChar>
inline std::basic_ostream<YYChar>&
operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
{
position last = loc.end - 1;
ostr << loc.begin;
if (last.filename
&& (!loc.begin.filename
|| *loc.begin.filename != *last.filename))
ostr << '-' << last;
else if (loc.begin.line != last.line)
ostr << '-' << last.line << '.' << last.column;
else if (loc.begin.column != last.column)
ostr << '-' << last.column;
return ostr;
}
} // yy
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/* Line 296 of location.cc */
#line 180 "rd_parser/location.hh"
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#endif /* !YY_YY_RD_PARSER_LOCATION_HH_INCLUDED */