1 // ----------------------------------------------------------------------------
2 // boost/format/exceptions.hpp
3 // ----------------------------------------------------------------------------
4 
5 //  Copyright Samuel Krempp 2003.
6 //
7 // Distributed under the Boost Software License, Version 1.0.
8 //    (See accompanying file LICENSE_1_0.txt or copy at
9 //          http://www.boost.org/LICENSE_1_0.txt)
10 //
11 //
12 //  See http://www.boost.org/libs/format/ for library home page
13 
14 // ----------------------------------------------------------------------------
15 
16 #ifndef BOOST_FORMAT_EXCEPTIONS_HPP
17 #define BOOST_FORMAT_EXCEPTIONS_HPP
18 
19 
20 #include <stdexcept>
21 
22 
23 namespace boost {
24 
25     namespace io {
26 
27 // **** exceptions -----------------------------------------------
28 
29         class format_error : public std::exception
30         {
31         public:
format_error()32             format_error()  {}
what() const33             virtual const char *what() const throw() {
34                 return "boost::format_error: "
35                     "format generic failure";
36             }
37         };
38 
39         class bad_format_string : public format_error
40         {
41             std::size_t pos_, next_;
42         public:
bad_format_string(std::size_t pos,std::size_t size)43             bad_format_string(std::size_t pos, std::size_t size)
44                 : pos_(pos), next_(size) {}
get_pos() const45             std::size_t get_pos() const { return pos_; }
get_next() const46             std::size_t get_next() const { return next_; }
what() const47             virtual const char *what() const throw() {
48                 return "boost::bad_format_string: format-string is ill-formed";
49             }
50         };
51 
52         class too_few_args : public format_error
53         {
54             std::size_t cur_, expected_;
55         public:
too_few_args(std::size_t cur,std::size_t expected)56             too_few_args(std::size_t cur, std::size_t expected)
57                 : cur_(cur), expected_(expected) {}
get_cur() const58             std::size_t get_cur() const { return cur_; }
get_expected() const59             std::size_t get_expected() const { return expected_; }
what() const60             virtual const char *what() const throw() {
61                 return "boost::too_few_args: "
62                     "format-string referred to more arguments than were passed";
63             }
64         };
65 
66         class too_many_args : public format_error
67         {
68             std::size_t cur_, expected_;
69         public:
too_many_args(std::size_t cur,std::size_t expected)70             too_many_args(std::size_t cur, std::size_t expected)
71                 : cur_(cur), expected_(expected) {}
get_cur() const72             std::size_t get_cur() const { return cur_; }
get_expected() const73             std::size_t get_expected() const { return expected_; }
what() const74             virtual const char *what() const throw() {
75                 return "boost::too_many_args: "
76                     "format-string referred to fewer arguments than were passed";
77             }
78         };
79 
80 
81         class  out_of_range : public format_error
82         {
83             int index_, beg_, end_;    // range is [ beg, end [
84         public:
out_of_range(int index,int beg,int end)85             out_of_range(int index, int beg, int end)
86                 : index_(index), beg_(beg), end_(end) {}
get_index() const87             int get_index() const { return index_; }
get_beg() const88             int get_beg() const { return beg_; }
get_end() const89             int get_end() const { return end_; }
what() const90             virtual const char *what() const throw() {
91                 return "boost::out_of_range: "
92                     "tried to refer to an argument (or item) number which"
93                     " is out of range, according to the format string";
94             }
95         };
96 
97 
98     } // namespace io
99 
100 } // namespace boost
101 
102 
103 #endif // BOOST_FORMAT_EXCEPTIONS_HPP
104