Index: bison/share/bison/location.cc |
=================================================================== |
--- bison/share/bison/location.cc (revision 0) |
+++ bison/share/bison/location.cc (revision 0) |
@@ -0,0 +1,275 @@ |
+# C++ skeleton for Bison |
+ |
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 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/>. |
+ |
+# 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, 2003, 2004, 2005, 2006])[ |
+ |
+/** |
+ ** \file position.hh |
+ ** Define the ]b4_namespace_ref[::position class. |
+ */ |
+ |
+#ifndef BISON_POSITION_HH |
+# define BISON_POSITION_HH |
+ |
+# include <iostream> |
+# include <string> |
+# include <algorithm> |
+ |
+]b4_namespace_open[ |
+ /// Abstract a position. |
+ class position |
+ { |
+ public: |
+]m4_ifdef([b4_location_constructors], [ |
+ /// Construct a position. |
+ position () |
+ : filename (0), line (]b4_location_initial_line[), column (]b4_location_initial_column[) |
+ { |
+ } |
+ |
+])[ |
+ /// Initialization. |
+ inline void initialize (]b4_percent_define_get([[filename_type]])[* fn) |
+ { |
+ filename = fn; |
+ line = ]b4_location_initial_line[; |
+ column = ]b4_location_initial_column[; |
+ } |
+ |
+ /** \name Line and Column related manipulators |
+ ** \{ */ |
+ public: |
+ /// (line related) Advance to the COUNT next lines. |
+ inline void lines (int count = 1) |
+ { |
+ column = ]b4_location_initial_column[; |
+ line += count; |
+ } |
+ |
+ /// (column related) Advance to the COUNT next columns. |
+ inline void columns (int count = 1) |
+ { |
+ column = std::max (]b4_location_initial_column[u, column + count); |
+ } |
+ /** \} */ |
+ |
+ public: |
+ /// File name to which this position refers. |
+ ]b4_percent_define_get([[filename_type]])[* filename; |
+ /// Current line number. |
+ unsigned int line; |
+ /// Current column number. |
+ unsigned int column; |
+ }; |
+ |
+ /// Add and assign a position. |
+ inline const position& |
+ operator+= (position& res, const int width) |
+ { |
+ res.columns (width); |
+ return res; |
+ } |
+ |
+ /// Add two position objects. |
+ inline const position |
+ operator+ (const position& begin, const int width) |
+ { |
+ position res = begin; |
+ return res += width; |
+ } |
+ |
+ /// Add and assign a position. |
+ inline const position& |
+ operator-= (position& res, const int width) |
+ { |
+ return res += -width; |
+ } |
+ |
+ /// Add two position objects. |
+ inline const position |
+ operator- (const position& begin, const int 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.filename == pos2.filename |
+ || pos1.filename && pos2.filename && *pos1.filename == *pos2.filename) |
+ && pos1.line == pos2.line && pos1.column == pos2.column; |
+ } |
+ |
+ /// 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 |
+ */ |
+ inline std::ostream& |
+ operator<< (std::ostream& 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, 2003, 2004, 2005, 2006])[ |
+ |
+/** |
+ ** \file 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. |
+ class location |
+ { |
+ public: |
+]m4_ifdef([b4_location_constructors], [ |
+ /// Construct a location. |
+ location () |
+ : begin (), end () |
+ { |
+ } |
+ |
+])[ |
+ /// Initialization. |
+ inline void initialize (]b4_percent_define_get([[filename_type]])[* fn) |
+ { |
+ begin.initialize (fn); |
+ end = begin; |
+ } |
+ |
+ /** \name Line and Column related manipulators |
+ ** \{ */ |
+ public: |
+ /// Reset initial location to final location. |
+ inline void step () |
+ { |
+ begin = end; |
+ } |
+ |
+ /// Extend the current location to the COUNT next columns. |
+ inline void columns (unsigned int count = 1) |
+ { |
+ end += count; |
+ } |
+ |
+ /// Extend the current location to the COUNT next lines. |
+ inline 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; |
+ } |
+]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 |
+ ** |
+ ** Avoid duplicate information. |
+ */ |
+ inline std::ostream& operator<< (std::ostream& 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; |
+ } |
+ |
+]b4_namespace_close[ |
+ |
+#endif // not BISON_LOCATION_HH] |
+m4_divert_pop(0) |
+m4_changecom([#]) |
Property changes on: bison\share\bison\location.cc |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |