163 lines
4.2 KiB
C++
163 lines
4.2 KiB
C++
/* A Bison parser, made by GNU Bison 2.4.3. */
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/* Positions for Bison parsers in C++
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Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010 Free Software
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Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* As a special exception, you may create a larger work that contains
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part or all of the Bison parser skeleton and distribute that work
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under terms of your choice, so long as that work isn't itself a
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parser generator using the skeleton or a modified version thereof
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as a parser skeleton. Alternatively, if you modify or redistribute
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the parser skeleton itself, you may (at your option) remove this
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special exception, which will cause the skeleton and the resulting
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Bison output files to be licensed under the GNU General Public
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License without this special exception.
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This special exception was added by the Free Software Foundation in
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version 2.2 of Bison. */
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/**
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** \file position.hh
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** Define the yy::position class.
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*/
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#ifndef BISON_POSITION_HH
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# define BISON_POSITION_HH
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# include <iostream>
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# include <string>
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# include <algorithm>
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namespace yy {
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/* Line 38 of location.cc */
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#line 51 "rd_parser/position.hh"
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/// Abstract a position.
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class position
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{
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public:
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/// Construct a position.
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position ()
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: filename (0), line (1), column (1)
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{
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}
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/// Initialization.
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inline void initialize (std::string* fn)
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{
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filename = fn;
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line = 1;
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column = 1;
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}
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/** \name Line and Column related manipulators
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** \{ */
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public:
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/// (line related) Advance to the COUNT next lines.
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inline void lines (int count = 1)
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{
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column = 1;
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line += count;
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}
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/// (column related) Advance to the COUNT next columns.
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inline void columns (int count = 1)
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{
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column = std::max (1u, column + count);
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}
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/** \} */
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public:
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/// File name to which this position refers.
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std::string* filename;
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/// Current line number.
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unsigned int line;
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/// Current column number.
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unsigned int column;
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};
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/// Add and assign a position.
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inline const position&
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operator+= (position& res, const int width)
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{
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res.columns (width);
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return res;
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}
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/// Add two position objects.
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inline const position
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operator+ (const position& begin, const int width)
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{
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position res = begin;
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return res += width;
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}
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/// Add and assign a position.
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inline const position&
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operator-= (position& res, const int width)
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{
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return res += -width;
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}
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/// Add two position objects.
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inline const position
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operator- (const position& begin, const int width)
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{
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return begin + -width;
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}
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/// Compare two position objects.
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inline bool
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operator== (const position& pos1, const position& pos2)
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{
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return (pos1.line == pos2.line
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&& pos1.column == pos2.column
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&& (pos1.filename == pos2.filename
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|| (pos1.filename && pos2.filename
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&& *pos1.filename == *pos2.filename)));
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}
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/// Compare two position objects.
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inline bool
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operator!= (const position& pos1, const position& pos2)
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{
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return !(pos1 == pos2);
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}
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/** \brief Intercept output stream redirection.
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** \param ostr the destination output stream
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** \param pos a reference to the position to redirect
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*/
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inline std::ostream&
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operator<< (std::ostream& ostr, const position& pos)
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{
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if (pos.filename)
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ostr << *pos.filename << ':';
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return ostr << pos.line << '.' << pos.column;
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}
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} // yy
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/* Line 145 of location.cc */
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#line 162 "rd_parser/position.hh"
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#endif // not BISON_POSITION_HH
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