-m4_divert(-1)
-
# C++ skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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 2 of the License, or
+# 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, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
-m4_include(b4_pkgdatadir/[c++.m4])
+m4_pushdef([b4_copyright_years],
+ [2002-2012])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
-m4_divert(0)dnl
-@output b4_dir_prefix[]position.hh
-b4_copyright([Position class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+m4_divert_push(0)dnl
+@output(b4_dir_prefix[]position.hh@)@
+b4_copyright([Positions for Bison parsers in C++])[
/**
** \file position.hh
- ** Define the position class.
+ ** Define the ]b4_namespace_ref[::position class.
*/
#ifndef BISON_POSITION_HH
# include <iostream>
# include <string>
+# include <algorithm>
-namespace yy
-{
+]b4_namespace_open[
/// Abstract a position.
class position
{
public:
- /// Initial column number.
- static const unsigned int initial_column = 0;
- /// Initial line number.
- static const unsigned int initial_line = 1;
-
- /** \name Ctor & dtor.
- ** \{ */
- public:
+]m4_ifdef([b4_location_constructors], [[
/// Construct a position.
- position () :
- filename (0),
- line (initial_line),
- column (initial_column)
+ explicit position (]b4_percent_define_get([[filename_type]])[* f = 0,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
+ : filename (f)
+ , line (l)
+ , column (c)
{
}
- /** \} */
+]])[
+ /// Initialization.
+ inline void initialize (]b4_percent_define_get([[filename_type]])[* fn)
+ {
+ filename = fn;
+ line = ]b4_location_initial_line[u;
+ column = ]b4_location_initial_column[u;
+ }
/** \name Line and Column related manipulators
** \{ */
- public:
/// (line related) Advance to the COUNT next lines.
+ /// Set current column to initial value.
inline void lines (int count = 1)
{
- column = initial_column;
+ column = ]b4_location_initial_column[u;
line += count;
}
/// (column related) Advance to the COUNT next columns.
inline void columns (int count = 1)
{
- int leftmost = initial_column;
- int current = column;
- if (leftmost <= current + count)
- column += count;
- else
- column = initial_column;
+ column = std::max (]b4_location_initial_column[u, column + count);
}
/** \} */
- public:
/// File name to which this position refers.
- ]b4_filename_type[* filename;
+ ]b4_percent_define_get([[filename_type]])[* filename;
/// Current line number.
unsigned int line;
/// Current column number.
{
return begin + -width;
}
+]b4_percent_define_flag_if([[define_location_comparison]], [[
+ /// Compare two position objects.
+ inline bool
+ operator== (const position& pos1, const position& pos2)
+ {
+ return (pos1.line == pos2.line
+ && pos1.column == pos2.column
+ && (pos1.filename == pos2.filename
+ || (pos1.filename && pos2.filename
+ && *pos1.filename == *pos2.filename)));
+ }
+ /// Compare two position objects.
+ inline bool
+ operator!= (const position& pos1, const position& pos2)
+ {
+ return !(pos1 == pos2);
+ }
+]])[
/** \brief Intercept output stream redirection.
** \param ostr the destination output stream
** \param pos a reference to the position to redirect
return ostr << pos.line << '.' << pos.column;
}
-}
+]b4_namespace_close[
#endif // not BISON_POSITION_HH]
-@output b4_dir_prefix[]location.hh
-b4_copyright([Location class for Bison C++ parsers], [2002, 2003, 2004, 2005])[
+@output(b4_dir_prefix[]location.hh@)@
+b4_copyright([Locations for Bison parsers in C++])[
/**
** \file location.hh
- ** Define the location class.
+ ** Define the ]b4_namespace_ref[::location class.
*/
#ifndef BISON_LOCATION_HH
# include <string>
# include "position.hh"
-namespace yy
-{
+]b4_namespace_open[
/// Abstract a location.
class location
{
- /** \name Ctor & dtor.
- ** \{ */
public:
- /// Construct a location.
- location () :
- begin (),
- end ()
+]m4_ifdef([b4_location_constructors], [
+ /// 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 (]b4_percent_define_get([[filename_type]])[* f,
+ unsigned int l = ]b4_location_initial_line[u,
+ unsigned int c = ]b4_location_initial_column[u)
+ : begin (f, l, c)
+ , end (f, l, c)
{
}
- /** \} */
+])[
+ /// Initialization.
+ inline void initialize (]b4_percent_define_get([[filename_type]])[* fn)
+ {
+ begin.initialize (fn);
+ end = begin;
+ }
/** \name Line and Column related manipulators
** \{ */
res.columns (width);
return res;
}
+]b4_percent_define_flag_if([[define_location_comparison]], [[
+ /// 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
position last = loc.end - 1;
ostr << loc.begin;
if (last.filename
- && (!loc.begin.filename
- || *loc.begin.filename != *last.filename))
+ && (!loc.begin.filename
+ || *loc.begin.filename != *last.filename))
ostr << '-' << last;
else if (loc.begin.line != last.line)
ostr << '-' << last.line << '.' << last.column;
return ostr;
}
-}
+]b4_namespace_close[
#endif // not BISON_LOCATION_HH]
-m4_divert(-1)
+m4_divert_pop(0)
+m4_popdef([b4_copyright_years])dnl
m4_changecom([#])
projects / bison.git / blobdiff