1/* A Bison parser, made by GNU Bison 2.6.90.8-d4fe.  */
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3/* Locations for Bison parsers in C++
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32
33/**
34 ** \file ../../../../examples/calc++/location.hh
35 ** Define the yy::location class.
36 */
37
38#ifndef YY_YY_EXAMPLES_CALC_LOCATION_HH_INCLUDED
39# define YY_YY_EXAMPLES_CALC_LOCATION_HH_INCLUDED
40
41# include "position.hh"
42
43
44namespace yy {
45/* Line 166 of location.cc  */
46#line 47 "../../../../examples/calc++/location.hh"
47
48  /// Abstract a location.
49  class location
50  {
51  public:
52
53    /// Construct a location from \a b to \a e.
54    location (const position& b, const position& e)
55      : begin (b)
56      , end (e)
57    {
58    }
59
60    /// Construct a 0-width location in \a p.
61    explicit location (const position& p = position ())
62      : begin (p)
63      , end (p)
64    {
65    }
66
67    /// Construct a 0-width location in \a f, \a l, \a c.
68    explicit location (std::string* f,
69                       unsigned int l = 1u,
70                       unsigned int c = 1u)
71      : begin (f, l, c)
72      , end (f, l, c)
73    {
74    }
75
76
77    /// Initialization.
78    void initialize (std::string* f = YY_NULL,
79                     unsigned int l = 1u,
80                     unsigned int c = 1u)
81    {
82      begin.initialize (f, l, c);
83      end = begin;
84    }
85
86    /** \name Line and Column related manipulators
87     ** \{ */
88  public:
89    /// Reset initial location to final location.
90    void step ()
91    {
92      begin = end;
93    }
94
95    /// Extend the current location to the COUNT next columns.
96    void columns (unsigned int count = 1)
97    {
98      end += count;
99    }
100
101    /// Extend the current location to the COUNT next lines.
102    void lines (unsigned int count = 1)
103    {
104      end.lines (count);
105    }
106    /** \} */
107
108
109  public:
110    /// Beginning of the located region.
111    position begin;
112    /// End of the located region.
113    position end;
114  };
115
116  /// Join two location objects to create a location.
117  inline const location operator+ (const location& begin, const location& end)
118  {
119    location res = begin;
120    res.end = end.end;
121    return res;
122  }
123
124  /// Add two location objects.
125  inline const location operator+ (const location& begin, unsigned int width)
126  {
127    location res = begin;
128    res.columns (width);
129    return res;
130  }
131
132  /// Add and assign a location.
133  inline location& operator+= (location& res, unsigned int width)
134  {
135    res.columns (width);
136    return res;
137  }
138
139  /// Compare two location objects.
140  inline bool
141  operator== (const location& loc1, const location& loc2)
142  {
143    return loc1.begin == loc2.begin && loc1.end == loc2.end;
144  }
145
146  /// Compare two location objects.
147  inline bool
148  operator!= (const location& loc1, const location& loc2)
149  {
150    return !(loc1 == loc2);
151  }
152
153  /** \brief Intercept output stream redirection.
154   ** \param ostr the destination output stream
155   ** \param loc a reference to the location to redirect
156   **
157   ** Avoid duplicate information.
158   */
159  template <typename YYChar>
160  inline std::basic_ostream<YYChar>&
161  operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
162  {
163    position last = loc.end - 1;
164    ostr << loc.begin;
165    if (last.filename
166	&& (!loc.begin.filename
167	    || *loc.begin.filename != *last.filename))
168      ostr << '-' << last;
169    else if (loc.begin.line != last.line)
170      ostr << '-' << last.line  << '.' << last.column;
171    else if (loc.begin.column != last.column)
172      ostr << '-' << last.column;
173    return ostr;
174  }
175
176
177} // yy
178/* Line 296 of location.cc  */
179#line 180 "../../../../examples/calc++/location.hh"
180
181#endif /* !YY_YY_EXAMPLES_CALC_LOCATION_HH_INCLUDED  */
182