diff options
author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 12:34:00 +0200 |
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committer | axis <qt-info@nokia.com> | 2011-04-27 12:34:00 +0200 |
commit | 92351a70e0b9193a1def156a470d9156beb8528b (patch) | |
tree | bbd040ad01c7a01d13939f45ad68c7d84d21b955 /gnuwin32/share/bison/location.cc |
Long live the qt5 Qt repository
Diffstat (limited to 'gnuwin32/share/bison/location.cc')
-rw-r--r-- | gnuwin32/share/bison/location.cc | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/gnuwin32/share/bison/location.cc b/gnuwin32/share/bison/location.cc new file mode 100644 index 00000000..4b79069f --- /dev/null +++ b/gnuwin32/share/bison/location.cc @@ -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([#]) |