|
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 |
|
35 /** |
|
36 ** \file location.hh |
|
37 ** Define the yy::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 yy |
|
48 { |
|
49 |
|
50 /// Abstract a location. |
|
51 class location |
|
52 { |
|
53 public: |
|
54 |
|
55 /// Construct a location. |
|
56 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. |
|
94 position begin; |
|
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 |