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position.hh
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1 /* A Bison parser, made by GNU Bison 2.3. */
2 
3 /* Positions 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_POSITION_HH
41 # define BISON_POSITION_HH
42 
43 # include <iostream>
44 # include <string>
45 
46 namespace TQMake
47 {
49  class position
50  {
51  public:
52 
54  position ()
55  : filename (0), line (1), column (0)
56  {
57  }
58 
59 
61  inline void initialize (std::string* fn)
62  {
63  filename = fn;
64  line = 1;
65  column = 0;
66  }
67 
70  public:
72  inline void lines (int count = 1)
73  {
74  column = 0;
75  line += count;
76  }
77 
79  inline void columns (int count = 1)
80  {
81  int leftmost = 0;
82  int current = column;
83  if (leftmost <= current + count)
84  column += count;
85  else
86  column = 0;
87  }
90  public:
92  std::string* filename;
94  unsigned int line;
96  unsigned int column;
97  };
98 
100  inline const position&
101  operator+= (position& res, const int width)
102  {
103  res.columns (width);
104  return res;
105  }
106 
108  inline const position
109  operator+ (const position& begin, const int width)
110  {
111  position res = begin;
112  return res += width;
113  }
114 
116  inline const position&
117  operator-= (position& res, const int width)
118  {
119  return res += -width;
120  }
121 
123  inline const position
124  operator- (const position& begin, const int width)
125  {
126  return begin + -width;
127  }
128 
133  inline std::ostream&
134  operator<< (std::ostream& ostr, const position& pos)
135  {
136  if (pos.filename)
137  ostr << *pos.filename << ':';
138  return ostr << pos.line << '.' << pos.column;
139  }
140 
141 }
142 #endif // not BISON_POSITION_HH
TQMake::position::line
unsigned int line
Current line number.
Definition: position.hh:94
TQMake
Definition: location.hh:47
TQMake::position::column
unsigned int column
Current column number.
Definition: position.hh:96
TQMake::position
Abstract a position.
Definition: position.hh:49
TQMake::position::initialize
void initialize(std::string *fn)
Initialization.
Definition: position.hh:61
TQMake::position::filename
std::string * filename
File name to which this position refers.
Definition: position.hh:92
TQMake::position::columns
void columns(int count=1)
(column related) Advance to the COUNT next columns.
Definition: position.hh:79
TQMake::position::lines
void lines(int count=1)
(line related) Advance to the COUNT next lines.
Definition: position.hh:72
TQMake::position::position
position()
Construct a position.
Definition: position.hh:54

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