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physical/xdl/location.hh
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1 /* A Bison parser, made by GNU Bison 2.3. */
2 
3 /* Locations for Bison parsers in C++
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5  Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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7  This program is free software; you can redistribute it and/or modify
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12  This program is distributed in the hope that it will be useful,
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20  Boston, MA 02110-1301, USA. */
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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
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32  This special exception was added by the Free Software Foundation in
33  version 2.2 of Bison. */
34 
35 /**
36  ** \file location.hh
37  ** Define the nmt::location class.
38  */
39 
40 #ifndef BISON_LOCATION_HH
41 # define BISON_LOCATION_HH
42 
43 # include <iostream>
44 # include <string>
45 # include "position.hh"
46 
47 namespace torc
48 {
49 
50  /// Abstract a location.
51  class location
52  {
53  public:
54 
55  /// Construct a location.
57  : begin (), end ()
58  {
59  }
60 
61 
62  /// Initialization.
63  inline void initialize (std::string* fn)
64  {
65  begin.initialize (fn);
66  end = begin;
67  }
68 
69  /** \name Line and Column related manipulators
70  ** \{ */
71  public:
72  /// Reset initial location to final location.
73  inline void step ()
74  {
75  begin = end;
76  }
77 
78  /// Extend the current location to the COUNT next columns.
79  inline void columns (unsigned int count = 1)
80  {
81  end += count;
82  }
83 
84  /// Extend the current location to the COUNT next lines.
85  inline void lines (unsigned int count = 1)
86  {
87  end.lines (count);
88  }
89  /** \} */
90 
91 
92  public:
93  /// Beginning of the located region.
95  /// End of the located region.
96  position end;
97  };
98 
99  /// Join two location objects to create a location.
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 
107  /// Add two location objects.
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 
115  /// Add and assign a location.
116  inline location& operator+= (location& res, unsigned int width)
117  {
118  res.columns (width);
119  return res;
120  }
121 
122  /** \brief Intercept output stream redirection.
123  ** \param ostr the destination output stream
124  ** \param loc a reference to the location to redirect
125  **
126  ** Avoid duplicate information.
127  */
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
position begin
Beginning of the located region.
std::ostream & operator<<(std::ostream &ostr, const location &loc)
Intercept output stream redirection.
void columns(unsigned int count=1)
Extend the current location to the COUNT next columns.
std::string string
void lines(unsigned int count=1)
Extend the current location to the COUNT next lines.
location & operator+=(location &res, unsigned int width)
Add and assign a location.
void step()
Reset initial location to final location.
location()
Construct a location.
void initialize(std::string *fn)
Initialization.
const location operator+(const location &begin, const location &end)
Join two location objects to create a location.
position end
End of the located region.
void lines(int count=1)
(line related) Advance to the COUNT next lines.
void initialize(std::string *fn)
Initialization.