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location.hh
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1 /* A Bison parser, made by GNU Bison 2.3. */
2 
3 /* Locations for Bison parsers in C++
4 
5  Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
6 
7  This program is free software; you can redistribute it and/or modify
8  it under the terms of the GNU General Public License as published by
9  the Free Software Foundation; either version 2, or (at your option)
10  any later version.
11 
12  This program is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  GNU General Public License for more details.
16 
17  You should have received a copy of the GNU General Public License
18  along with this program; if not, write to the Free Software
19  Foundation, Inc., 51 Franklin Street, Fifth Floor,
20  Boston, MA 02110-1301, USA. */
21 
22 /* As a special exception, you may create a larger work that contains
23  part or all of the Bison parser skeleton and distribute that work
24  under terms of your choice, so long as that work isn't itself a
25  parser generator using the skeleton or a modified version thereof
26  as a parser skeleton. Alternatively, if you modify or redistribute
27  the parser skeleton itself, you may (at your option) remove this
28  special exception, which will cause the skeleton and the resulting
29  Bison output files to be licensed under the GNU General Public
30  License without this special exception.
31 
32  This special exception was added by the Free Software Foundation in
33  version 2.2 of Bison. */
34 
40 #ifndef BISON_LOCATION_HH
41 # define BISON_LOCATION_HH
42 
43 # include <iostream>
44 # include <string>
45 # include "position.hh"
46 
47 namespace yy
48 {
49 
51  class location
52  {
53  public:
54 
57  : begin (), end ()
58  {
59  }
60 
61 
63  inline void initialize (std::string* fn)
64  {
65  begin.initialize (fn);
66  end = begin;
67  }
68 
71  public:
73  inline void step ()
74  {
75  begin = end;
76  }
77 
79  inline void columns (unsigned int count = 1)
80  {
81  end += count;
82  }
83 
85  inline void lines (unsigned int count = 1)
86  {
87  end.lines (count);
88  }
92  public:
97  };
98 
100  inline const location operator+ (const location& begin, const location& end)
101  {
102  location res = begin;
103  res.end = end.end;
104  return res;
105  }
106 
108  inline const location operator+ (const location& begin, unsigned int width)
109  {
110  location res = begin;
111  res.columns (width);
112  return res;
113  }
114 
116  inline location& operator+= (location& res, unsigned int width)
117  {
118  res.columns (width);
119  return res;
120  }
121 
128  inline std::ostream& operator<< (std::ostream& ostr, const location& loc)
129  {
130  position last = loc.end - 1;
131  ostr << loc.begin;
132  if (last.filename
133  && (!loc.begin.filename
134  || *loc.begin.filename != *last.filename))
135  ostr << '-' << last;
136  else if (loc.begin.line != last.line)
137  ostr << '-' << last.line << '.' << last.column;
138  else if (loc.begin.column != last.column)
139  ostr << '-' << last.column;
140  return ostr;
141  }
142 
143 }
144 
145 #endif // not BISON_LOCATION_HH

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