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# C++ skeleton for Bison # Copyright (C) 2002-2015 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/>. m4_pushdef([b4_copyright_years], [2002-2015]) # b4_position_define # ------------------ # Define class position. m4_define([b4_position_define], [[ /// Abstract a position. class position { public:]m4_ifdef([b4_location_constructors], [[ /// Construct a position. explicit position (]b4_percent_define_get([[filename_type]])[* f = YY_NULLPTR, unsigned int l = ]b4_location_initial_line[u, unsigned int c = ]b4_location_initial_column[u) : filename (f) , line (l) , column (c) { } ]])[ /// Initialization. void initialize (]b4_percent_define_get([[filename_type]])[* fn = YY_NULLPTR, unsigned int l = ]b4_location_initial_line[u, unsigned int c = ]b4_location_initial_column[u) { filename = fn; line = l; column = c; } /** \name Line and Column related manipulators ** \{ */ /// (line related) Advance to the COUNT next lines. void lines (int count = 1) { if (count) { column = ]b4_location_initial_column[u; line = add_ (line, count, ]b4_location_initial_line[); } } /// (column related) Advance to the COUNT next columns. void columns (int count = 1) { column = add_ (column, count, ]b4_location_initial_column[); } /** \} */ /// 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; private: /// Compute max(min, lhs+rhs) (provided min <= lhs). static unsigned int add_ (unsigned int lhs, int rhs, unsigned int min) { return (0 < rhs || -static_cast<unsigned int>(rhs) < lhs ? rhs + lhs : min); } }; /// Add \a width columns, in place. inline position& operator+= (position& res, int width) { res.columns (width); return res; } /// Add \a width columns. inline position operator+ (position res, int width) { return res += width; } /// Subtract \a width columns, in place. inline position& operator-= (position& res, int width) { return res += -width; } /// Subtract \a width columns. inline position operator- (position res, int width) { return res -= 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 */ 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_location_define # ------------------ m4_define([b4_location_define], [[ /// Abstract a location. class location { public: ]m4_ifdef([b4_location_constructors], [ /// 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. void initialize (]b4_percent_define_get([[filename_type]])[* f = YY_NULLPTR, unsigned int l = ]b4_location_initial_line[u, unsigned int c = ]b4_location_initial_column[u) { begin.initialize (f, l, c); end = begin; } /** \name Line and Column related manipulators ** \{ */ public: /// Reset initial location to final location. void step () { begin = end; } /// Extend the current location to the COUNT next columns. void columns (int count = 1) { end += count; } /// Extend the current location to the COUNT next lines. void lines (int count = 1) { end.lines (count); } /** \} */ public: /// Beginning of the located region. position begin; /// End of the located region. position end; }; /// Join two locations, in place. inline location& operator+= (location& res, const location& end) { res.end = end.end; return res; } /// Join two locations. inline location operator+ (location res, const location& end) { return res += end; } /// Add \a width columns to the end position, in place. inline location& operator+= (location& res, int width) { res.columns (width); return res; } /// Add \a width columns to the end position. inline location operator+ (location res, int width) { return res += width; } /// Subtract \a width columns to the end position, in place. inline location& operator-= (location& res, int width) { return res += -width; } /// Subtract \a width columns to the end position. inline location operator- (location res, int width) { return res -= width; } ]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. */ template <typename YYChar> inline std::basic_ostream<YYChar>& operator<< (std::basic_ostream<YYChar>& ostr, const location& loc) { unsigned int end_col = 0 < loc.end.column ? loc.end.column - 1 : 0; ostr << loc.begin; if (loc.end.filename && (!loc.begin.filename || *loc.begin.filename != *loc.end.filename)) ostr << '-' << loc.end.filename << ':' << loc.end.line << '.' << end_col; else if (loc.begin.line < loc.end.line) ostr << '-' << loc.end.line << '.' << end_col; else if (loc.begin.column < end_col) ostr << '-' << end_col; return ostr; } ]]) 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() ]) m4_popdef([b4_copyright_years])
/home/sudancam/../../usr/share/groff/../bison/location.cc