* src/lalr.c (state_lookahead_tokens_count): Correct comment.

[bison.git] / data / location.cc

diff --git a/data/location.cc b/data/location.cc
index 6a5b83ea91ed2bfd6e2f142602998b6d4da8eb86..d21e362a3be8d383b90e7169c49d3849dbb618b8 100644 (file)
--- a/data/location.cc
+++ b/data/location.cc
@@ -1,34 +1,31 @@
-m4_divert(-1)
-

 # C++ skeleton for Bison
 
 # C++ skeleton for Bison
 

-# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009
+# 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
 # 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.
 # (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.
 # 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
 # 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/>.

 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 
 # 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, 2006])[
+m4_divert_push(0)dnl
+@output(b4_dir_prefix[]position.hh@)@
+b4_copyright([Positions for Bison parsers in C++],
+             [2002, 2003, 2004, 2005, 2006, 2007, 2009])[

 
 /**
  ** \file position.hh
 
 /**
  ** \file position.hh

- ** Define the yy::position class.
+ ** Define the ]b4_namespace_ref[::position class.

  */
 
 #ifndef BISON_POSITION_HH
  */
 
 #ifndef BISON_POSITION_HH


@@ -36,9 +33,9 @@ b4_copyright([Position class for Bison C++ parsers],
 
 # include <iostream>
 # include <string>
 
 # include <iostream>
 # include <string>

+# include <algorithm>

 
 

-namespace yy
-{
+]b4_namespace_open[

   /// Abstract a position.
   class position
   {
   /// Abstract a position.
   class position
   {


@@ -46,17 +43,17 @@ namespace yy
 ]m4_ifdef([b4_location_constructors], [
     /// Construct a position.
     position ()
 ]m4_ifdef([b4_location_constructors], [
     /// Construct a position.
     position ()

-      : filename (0), line (1), column (0)
+      : filename (0), line (]b4_location_initial_line[), column (]b4_location_initial_column[)

     {
     }
 
 ])[
     /// Initialization.
     {
     }
 
 ])[
     /// Initialization.

-    inline void initialize (]b4_filename_type[* fn)
+    inline void initialize (]b4_percent_define_get([[filename_type]])[* fn)

     {
       filename = fn;
     {
       filename = fn;

-      line = 1;
-      column = 0;
+      line = ]b4_location_initial_line[;
+      column = ]b4_location_initial_column[;

     }
 
     /** \name Line and Column related manipulators
     }
 
     /** \name Line and Column related manipulators


@@ -65,25 +62,20 @@ namespace yy
     /// (line related) Advance to the COUNT next lines.
     inline void lines (int count = 1)
     {
     /// (line related) Advance to the COUNT next lines.
     inline void lines (int count = 1)
     {

-      column = 0;
+      column = ]b4_location_initial_column[;

       line += count;
     }
 
     /// (column related) Advance to the COUNT next columns.
     inline void columns (int count = 1)
     {
       line += count;
     }
 
     /// (column related) Advance to the COUNT next columns.
     inline void columns (int count = 1)
     {

-      int leftmost = 0;
-      int current  = column;
-      if (leftmost <= current + count)
-       column += count;
-      else
-       column = 0;
+      column = std::max (]b4_location_initial_column[u, column + count);

     }
     /** \} */
 
   public:
     /// File name to which this position refers.
     }
     /** \} */
 
   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.
     /// Current line number.
     unsigned int line;
     /// Current column number.


@@ -119,7 +111,25 @@ namespace yy
   {
     return begin + -width;
   }
   {
     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
   /** \brief Intercept output stream redirection.
    ** \param ostr the destination output stream
    ** \param pos a reference to the position to redirect


@@ -132,15 +142,15 @@ namespace yy
     return ostr << pos.line << '.' << pos.column;
   }
 
     return ostr << pos.line << '.' << pos.column;
   }
 

-}
+]b4_namespace_close[

 #endif // not BISON_POSITION_HH]
 #endif // not BISON_POSITION_HH]

-@output b4_dir_prefix[]location.hh
-b4_copyright([Location class for Bison C++ parsers],
-  [2002, 2003, 2004, 2005, 2006])[
+@output(b4_dir_prefix[]location.hh@)@
+b4_copyright([Locations for Bison parsers in C++],
+             [2002, 2003, 2004, 2005, 2006, 2007, 2009])[

 
 /**
  ** \file location.hh
 
 /**
  ** \file location.hh

- ** Define the yy::location class.
+ ** Define the ]b4_namespace_ref[::location class.

  */
 
 #ifndef BISON_LOCATION_HH
  */
 
 #ifndef BISON_LOCATION_HH


@@ -150,8 +160,7 @@ b4_copyright([Location class for Bison C++ parsers],
 # include <string>
 # include "position.hh"
 
 # include <string>
 # include "position.hh"
 

-namespace yy
-{
+]b4_namespace_open[

 
   /// Abstract a location.
   class location
 
   /// Abstract a location.
   class location


@@ -166,7 +175,7 @@ namespace yy
 
 ])[
     /// Initialization.
 
 ])[
     /// Initialization.

-    inline void initialize (]b4_filename_type[* fn)
+    inline void initialize (]b4_percent_define_get([[filename_type]])[* fn)

     {
       begin.initialize (fn);
       end = begin;
     {
       begin.initialize (fn);
       end = begin;


@@ -224,7 +233,21 @@ namespace yy
     res.columns (width);
     return res;
   }
     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
   /** \brief Intercept output stream redirection.
    ** \param ostr the destination output stream
    ** \param loc a reference to the location to redirect


@@ -246,8 +269,8 @@ namespace yy
     return ostr;
   }
 
     return ostr;
   }
 

-}
+]b4_namespace_close[

 
 #endif // not BISON_LOCATION_HH]
 
 #endif // not BISON_LOCATION_HH]

-m4_divert(-1)
+m4_divert_pop(0)

 m4_changecom([#])
 m4_changecom([#])