X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/03f1b545b94c6699ee637b517c4941afb76eb0d9..ea9e670d728ac659e139434de31ea9306ecdd117:/data/location.cc

diff --git a/data/location.cc b/data/location.cc
index 0ee02c28..631247a7 100644
--- a/data/location.cc
+++ b/data/location.cc
@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 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
@@ -15,29 +15,14 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-# We do want M4 expansion after # for CPP macros.
-m4_changecom()
-m4_divert_push(0)dnl
-@output(b4_dir_prefix[]position.hh@)@
-b4_copyright([Positions for Bison parsers in C++],
-             [2002-2007, 2009-2012])[
-
-/**
- ** \file ]b4_dir_prefix[position.hh
- ** Define the ]b4_namespace_ref[::position class.
- */
-
-#ifndef BISON_POSITION_HH
-# define BISON_POSITION_HH
+m4_pushdef([b4_copyright_years],
+           [2002-2012])
 
-# include <iostream>
-# include <string>
-# include <algorithm>
-
-]b4_null_define[
-
-]b4_namespace_open[
-  /// Abstract a position.
+# b4_position_define
+# ------------------
+# Define class position.
+m4_define([b4_position_define],
+[[  /// Abstract a position.
   class position
   {
   public:
@@ -88,7 +73,7 @@ b4_copyright([Positions for Bison parsers in C++],
   };
 
   /// Add and assign a position.
-  inline const position&
+  inline position&
   operator+= (position& res, const int width)
   {
     res.columns (width);
@@ -104,7 +89,7 @@ b4_copyright([Positions for Bison parsers in C++],
   }
 
   /// Add and assign a position.
-  inline const position&
+  inline position&
   operator-= (position& res, const int width)
   {
     return res += -width;
@@ -139,35 +124,21 @@ b4_copyright([Positions for Bison parsers in C++],
    ** \param ostr the destination output stream
    ** \param pos a reference to the position to redirect
    */
-  inline std::ostream&
-  operator<< (std::ostream& ostr, const position& pos)
+  template <typename YYChar>
+  inline std::basic_ostream<YYChar>&
+  operator<< (std::basic_ostream<YYChar>& ostr, const position& pos)
   {
     if (pos.filename)
       ostr << *pos.filename << ':';
     return ostr << pos.line << '.' << pos.column;
   }
+]])
 
-]b4_namespace_close[
-#endif // not BISON_POSITION_HH]
-@output(b4_dir_prefix[]location.hh@)@
-b4_copyright([Locations for Bison parsers in C++],
-             [2002-2007, 2009-2012])[
 
-/**
- ** \file ]b4_dir_prefix[location.hh
- ** Define the ]b4_namespace_ref[::location class.
- */
-
-#ifndef BISON_LOCATION_HH
-# define BISON_LOCATION_HH
-
-# include <iostream>
-# include <string>
-# include "position.hh"
-
-]b4_namespace_open[
-
-  /// Abstract a location.
+# b4_location_define
+# ------------------
+m4_define([b4_location_define],
+[[  /// Abstract a location.
   class location
   {
   public:
@@ -278,13 +249,15 @@ b4_copyright([Locations for Bison parsers in C++],
    **
    ** Avoid duplicate information.
    */
-  inline std::ostream& operator<< (std::ostream& ostr, const location& loc)
+  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))
+        && (!loc.begin.filename
+            || *loc.begin.filename != *last.filename))
       ostr << '-' << last;
     else if (loc.begin.line != last.line)
       ostr << '-' << last.line  << '.' << last.column;
@@ -292,9 +265,53 @@ b4_copyright([Locations for Bison parsers in C++],
       ostr << '-' << last.column;
     return ostr;
   }
+]])
+
 
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()
+b4_defines_if([
+b4_output_begin([b4_dir_prefix[]position.hh])
+b4_copyright([Positions for Bison parsers in C++])[
+
+/**
+ ** \file ]b4_dir_prefix[position.hh
+ ** Define the ]b4_namespace_ref[::position class.
+ */
+
+]b4_cpp_guard_open([b4_dir_prefix[]position.hh])[
+
+# include <algorithm> // std::max
+# include <iostream>
+# include <string>
+
+]b4_null_define[
+
+]b4_namespace_open[
+]b4_position_define[
 ]b4_namespace_close[
+]b4_cpp_guard_close([b4_dir_prefix[]position.hh])
+b4_output_end()
+
+
+b4_output_begin([b4_dir_prefix[]location.hh])
+b4_copyright([Locations for Bison parsers in C++])[
+
+/**
+ ** \file ]b4_dir_prefix[location.hh
+ ** Define the ]b4_namespace_ref[::location class.
+ */
+
+]b4_cpp_guard_open([b4_dir_prefix[]location.hh])[
+
+# include "position.hh"
+
+]b4_namespace_open[
+]b4_location_define[
+]b4_namespace_close[
+]b4_cpp_guard_close([b4_dir_prefix[]location.hh])
+b4_output_end()
+])
+
 
-#endif // not BISON_LOCATION_HH]
-m4_divert_pop(0)
-m4_changecom([#])
+m4_popdef([b4_copyright_years])