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28 
29 /// \file utils/config/exceptions.hpp
30 /// Exception types raised by the config module.
31 
32 #if !defined(UTILS_CONFIG_EXCEPTIONS_HPP)
33 #define UTILS_CONFIG_EXCEPTIONS_HPP
34 
35 #include <stdexcept>
36 
37 #include "utils/config/keys_fwd.hpp"
38 #include "utils/config/tree_fwd.hpp"
39 
40 namespace utils {
41 namespace config {
42 
43 
44 /// Base exceptions for config errors.
45 class error : public std::runtime_error {
46 public:
47     explicit error(const std::string&);
48     ~error(void) throw();
49 };
50 
51 
52 /// Exception denoting that two trees cannot be combined.
53 class bad_combination_error : public error {
54 public:
55     explicit bad_combination_error(const detail::tree_key&,
56                                    const std::string&);
57     ~bad_combination_error(void) throw();
58 };
59 
60 
61 /// Exception denoting that a key was not found within a tree.
62 class invalid_key_error : public error {
63 public:
64     explicit invalid_key_error(const std::string&);
65     ~invalid_key_error(void) throw();
66 };
67 
68 
69 /// Exception denoting that a key was given an invalid value.
70 class invalid_key_value : public error {
71 public:
72     explicit invalid_key_value(const detail::tree_key&, const std::string&);
73     ~invalid_key_value(void) throw();
74 };
75 
76 
77 /// Exception denoting that a configuration file is invalid.
78 class syntax_error : public error {
79 public:
80     explicit syntax_error(const std::string&);
81     ~syntax_error(void) throw();
82 };
83 
84 
85 /// Exception denoting that a key was not found within a tree.
86 class unknown_key_error : public error {
87 public:
88     explicit unknown_key_error(const detail::tree_key&,
89                                const std::string& = "");
90     ~unknown_key_error(void) throw();
91 };
92 
93 
94 /// Exception denoting that a value was invalid.
95 class value_error : public error {
96 public:
97     explicit value_error(const std::string&);
98     ~value_error(void) throw();
99 };
100 
101 
102 }  // namespace config
103 }  // namespace utils
104 
105 
106 #endif  // !defined(UTILS_CONFIG_EXCEPTIONS_HPP)
107