X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/aa08666d72d132462e8d53d2d23c95a3bcfa403d..ea9e670d728ac659e139434de31ea9306ecdd117:/data/location.cc?ds=sidebyside diff --git a/data/location.cc b/data/location.cc index a3dacac0..631247a7 100644 --- a/data/location.cc +++ b/data/location.cc @@ -1,89 +1,71 @@ -m4_divert(-1) - # C++ skeleton for Bison -# Copyright (C) 2002, 2003, 2004, 2005, 2006 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 - -# 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])[ - -/** - ** \file position.hh - ** Define the ]b4_namespace[::position class. - */ - -#ifndef BISON_POSITION_HH -# define BISON_POSITION_HH +# along with this program. If not, see . -# include -# include +m4_pushdef([b4_copyright_years], + [2002-2012]) -namespace ]b4_namespace[ -{ - /// Abstract a position. +# b4_position_define +# ------------------ +# Define class position. +m4_define([b4_position_define], +[[ /// Abstract a position. class position { public: -]m4_ifdef([b4_location_constructors], [ +]m4_ifdef([b4_location_constructors], [[ /// Construct a position. - position () - : filename (0), line (1), column (0) + explicit position (]b4_percent_define_get([[filename_type]])[* f = YY_NULL, + 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_filename_type[* fn) + void initialize (]b4_percent_define_get([[filename_type]])[* fn = YY_NULL, + unsigned int l = ]b4_location_initial_line[u, + unsigned int c = ]b4_location_initial_column[u) { filename = fn; - line = 1; - column = 0; + line = l; + column = c; } /** \name Line and Column related manipulators ** \{ */ - public: /// (line related) Advance to the COUNT next lines. - inline void lines (int count = 1) + void lines (int count = 1) { - column = 0; + column = ]b4_location_initial_column[u; line += count; } /// (column related) Advance to the COUNT next columns. - inline void columns (int count = 1) + 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. - ]b4_filename_type[* filename; + ]b4_percent_define_get([[filename_type]])[* filename; /// Current line number. unsigned int line; /// Current column number. @@ -91,7 +73,7 @@ namespace ]b4_namespace[ }; /// Add and assign a position. - inline const position& + inline position& operator+= (position& res, const int width) { res.columns (width); @@ -107,7 +89,7 @@ namespace ]b4_namespace[ } /// Add and assign a position. - inline const position& + inline position& operator-= (position& res, const int width) { return res += -width; @@ -119,56 +101,78 @@ namespace ]b4_namespace[ { 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 */ - inline std::ostream& - operator<< (std::ostream& ostr, const position& pos) + template + inline std::basic_ostream& + operator<< (std::basic_ostream& ostr, const position& pos) { if (pos.filename) ostr << *pos.filename << ':'; return ostr << pos.line << '.' << pos.column; } +]]) -} -#endif // not BISON_POSITION_HH] -@output b4_dir_prefix[]location.hh -b4_copyright([Location class for Bison C++ parsers], - [2002, 2003, 2004, 2005, 2006])[ - -/** - ** \file location.hh - ** Define the ]b4_namespace[::location class. - */ - -#ifndef BISON_LOCATION_HH -# define BISON_LOCATION_HH -# include -# include -# include "position.hh" - -namespace ]b4_namespace[ -{ - - /// Abstract a location. +# b4_location_define +# ------------------ +m4_define([b4_location_define], +[[ /// Abstract a location. class location { public: ]m4_ifdef([b4_location_constructors], [ - /// Construct a location. - location () - : begin (), end () + /// 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_filename_type[* fn) + void initialize (]b4_percent_define_get([[filename_type]])[* f = YY_NULL, + unsigned int l = ]b4_location_initial_line[u, + unsigned int c = ]b4_location_initial_column[u) { - begin.initialize (fn); + begin.initialize (f, l, c); end = begin; } @@ -176,19 +180,19 @@ namespace ]b4_namespace[ ** \{ */ public: /// Reset initial location to final location. - inline void step () + void step () { begin = end; } /// Extend the current location to the COUNT next columns. - inline void columns (unsigned int count = 1) + void columns (unsigned int count = 1) { end += count; } /// Extend the current location to the COUNT next lines. - inline void lines (unsigned int count = 1) + void lines (unsigned int count = 1) { end.lines (count); } @@ -224,20 +228,36 @@ namespace ]b4_namespace[ 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) + template + inline std::basic_ostream& + operator<< (std::basic_ostream& 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; @@ -245,9 +265,53 @@ namespace ]b4_namespace[ 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 // std::max +# include +# include + +]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(-1) -m4_changecom([#]) +m4_popdef([b4_copyright_years])