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generic/edif/position.hh
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1 
2 /* A Bison parser, made by GNU Bison 2.4. */
3 
4 /* Positions for Bison parsers in C++
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6  Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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18  You should have received a copy of the GNU General Public License
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21 /* As a special exception, you may create a larger work that contains
22  part or all of the Bison parser skeleton and distribute that work
23  under terms of your choice, so long as that work isn't itself a
24  parser generator using the skeleton or a modified version thereof
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31  This special exception was added by the Free Software Foundation in
32  version 2.2 of Bison. */
33 
34 /**
35  ** \file position.hh
36  ** Define the torc::generic::position class.
37  */
38 
39 #ifndef BISON_POSITION_HH
40 # define BISON_POSITION_HH
41 
42 # include <iostream>
43 # include <string>
44 # include <algorithm>
45 
46 
47 /* Line 38 of location.cc */
48 #line 44 "parser.yy"
49 namespace torc { namespace generic {
50 
51 /* Line 38 of location.cc */
52 #line 53 "position.hh"
53  /// Abstract a position.
54  class position
55  {
56  public:
57 
58  /// Construct a position.
60  : filename (0), line (1), column (1)
61  {
62  }
63 
64 
65  /// Initialization.
66  inline void initialize (std::string* fn)
67  {
68  filename = fn;
69  line = 1;
70  column = 1;
71  }
72 
73  /** \name Line and Column related manipulators
74  ** \{ */
75  public:
76  /// (line related) Advance to the COUNT next lines.
77  inline void lines (int count = 1)
78  {
79  column = 1;
80  line += count;
81  }
82 
83  /// (column related) Advance to the COUNT next columns.
84  inline void columns (int count = 1)
85  {
86  column = std::max (1u, column + count);
87  }
88  /** \} */
89 
90  public:
91  /// File name to which this position refers.
93  /// Current line number.
94  unsigned int line;
95  /// Current column number.
96  unsigned int column;
97  };
98 
99  /// Add and assign a position.
100  inline const position&
101  operator+= (position& res, const int width)
102  {
103  res.columns (width);
104  return res;
105  }
106 
107  /// Add two position objects.
108  inline const position
109  operator+ (const position& begin, const int width)
110  {
111  position res = begin;
112  return res += width;
113  }
114 
115  /// Add and assign a position.
116  inline const position&
117  operator-= (position& res, const int width)
118  {
119  return res += -width;
120  }
121 
122  /// Add two position objects.
123  inline const position
124  operator- (const position& begin, const int width)
125  {
126  return begin + -width;
127  }
128 
129  /// Compare two position objects.
130  inline bool
131  operator== (const position& pos1, const position& pos2)
132  {
133  return
134  (pos1.filename == pos2.filename
135  || (pos1.filename && pos2.filename && *pos1.filename == *pos2.filename))
136  && pos1.line == pos2.line && pos1.column == pos2.column;
137  }
138 
139  /// Compare two position objects.
140  inline bool
141  operator!= (const position& pos1, const position& pos2)
142  {
143  return !(pos1 == pos2);
144  }
145 
146  /** \brief Intercept output stream redirection.
147  ** \param ostr the destination output stream
148  ** \param pos a reference to the position to redirect
149  */
150  inline std::ostream&
151  operator<< (std::ostream& ostr, const position& pos)
152  {
153  if (pos.filename)
154  ostr << *pos.filename << ':';
155  return ostr << pos.line << '.' << pos.column;
156  }
157 
158 
159 /* Line 144 of location.cc */
160 #line 44 "parser.yy"
161 } } // torc::generic
162 
163 /* Line 144 of location.cc */
164 #line 165 "position.hh"
165 #endif // not BISON_POSITION_HH
std::string * filename
File name to which this position refers.
void lines(int count=1)
(line related) Advance to the COUNT next lines.
unsigned int column
Current column number.
unsigned int line
Current line number.
location & operator+=(location &res, unsigned int width)
Add and assign a location.
const location operator+(const location &begin, const location &end)
Join two location objects to create a location.
void initialize(std::string *fn)
Initialization.
std::string string
bool operator!=(const location &loc1, const location &loc2)
Compare two location objects.
std::ostream & operator<<(std::ostream &ostr, const location &loc)
Intercept output stream redirection.
std::string * filename
File name to which this position refers.
bool operator==(const location &loc1, const location &loc2)
Compare two location objects.
const position operator-(const position &begin, const int width)
Add two position objects.
position()
Construct a position.
unsigned int column
Current column number.
const position & operator-=(position &res, const int width)
Add and assign a position.
void columns(int count=1)
(column related) Advance to the COUNT next columns.
unsigned int line
Current line number.
void columns(int count=1)
(column related) Advance to the COUNT next columns.