include/boost/url/grammar/impl/error.hpp

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error.hpp

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1		//
2		// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
3		// Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
4		//
5		// Distributed under the Boost Software License, Version 1.0. (See accompanying
6		// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7		//
8		// Official repository: https://github.com/boostorg/url
9		//
10
11		#ifndef BOOST_URL_GRAMMAR_IMPL_ERROR_HPP
12		#define BOOST_URL_GRAMMAR_IMPL_ERROR_HPP
13
14		#include <type_traits>
15
16		namespace boost {
17		namespace system {
18		template<>
19		struct is_error_code_enum<
20		::boost::urls::grammar::error>
21		{
22		static bool const value = true;
23		};
24		template<>
25		struct is_error_condition_enum<
26		::boost::urls::grammar::condition>
27		{
28		static bool const value = true;
29		};
30		} // system
31		} // boost
32
33		namespace boost {
34		namespace urls {
35		namespace grammar {
36
37		namespace detail {
38
39		struct BOOST_SYMBOL_VISIBLE
40		error_cat_type
41		: system::error_category
42		{
43		BOOST_URL_CXX20_CONSTEXPR
44	616x	const char* name(
45		) const noexcept override
46		{
47	616x	return "boost.url.grammar";
48		}
49
50	616x	std::string message(
51		int code) const override
52		{
53	1232x	return message(code, nullptr, 0);
54		}
55
56		BOOST_URL_CXX20_CONSTEXPR
57	616x	char const* message(
58		int code,
59		char*,
60		std::size_t) const noexcept override
61		{
62	616x	switch(static_cast<error>(code))
63		{
64	1x	default:
65	1x	case error::need_more: return "need more";
66	63x	case error::mismatch: return "mismatch";
67	13x	case error::invalid: return "invalid";
68	1x	case error::end_of_range: return "end of range";
69	537x	case error::leftover: return "leftover";
70	1x	case error::out_of_range: return "out of range";
71		}
72		}
73
74		BOOST_URL_CXX20_CONSTEXPR
75		system::error_condition
76		default_error_condition(
77		int ev) const noexcept override;
78
79	78x	BOOST_SYSTEM_CONSTEXPR error_cat_type() noexcept
80	78x	: error_category(0x0536e50a30f9e9f2)
81		{
82	78x	}
83		};
84
85		struct BOOST_SYMBOL_VISIBLE
86		condition_cat_type
87		: system::error_category
88		{
89		BOOST_URL_CXX20_CONSTEXPR
90	5x	const char* name(
91		) const noexcept override
92		{
93	5x	return "boost.url.grammar";
94		}
95
96	5x	std::string message(
97		int code) const override
98		{
99	10x	return message(code, nullptr, 0);
100		}
101
102		BOOST_URL_CXX20_CONSTEXPR
103	5x	char const* message(
104		int code,
105		char*,
106		std::size_t) const noexcept override
107		{
108		switch(static_cast<condition>(code))
109		{
110		default:
111		case condition::fatal:
112	5x	return "fatal condition";
113		}
114		}
115
116	78x	BOOST_SYSTEM_CONSTEXPR condition_cat_type()
117	78x	: error_category(0x0536e50a30f9e9f2)
118		{
119	78x	}
120		};
121
122		#if defined(BOOST_URL_HAS_CXX20_CONSTEXPR)
123		// Visible so a shared library built as C++20
124		// still exports the symbols that consumers built
125		// as C++17 reference through the externs below
126		BOOST_SYMBOL_VISIBLE
127		inline constexpr error_cat_type error_cat{};
128		BOOST_SYMBOL_VISIBLE
129		inline constexpr condition_cat_type condition_cat{};
130		#else
131		BOOST_URL_DECL extern error_cat_type error_cat;
132		BOOST_URL_DECL extern condition_cat_type condition_cat;
133		#endif
134
135		} // detail
136
137		inline
138		BOOST_SYSTEM_CONSTEXPR
139		system::error_code
140	53381x	make_error_code(
141		error ev) noexcept
142		{
143		return system::error_code{
144		static_cast<std::underlying_type<
145		error>::type>(ev),
146	53381x	detail::error_cat};
147		}
148
149		inline
150		BOOST_SYSTEM_CONSTEXPR
151		system::error_condition
152	20x	make_error_condition(
153		condition c) noexcept
154		{
155	20x	return system::error_condition{
156		static_cast<std::underlying_type<
157		condition>::type>(c),
158	20x	detail::condition_cat};
159		}
160
161		BOOST_URL_CXX20_CONSTEXPR_OR_INLINE
162		system::error_condition
163	6x	detail::error_cat_type::
164		default_error_condition(
165		int ev) const noexcept
166		{
167	6x	switch(static_cast<error>(ev))
168		{
169	2x	case error::invalid:
170		case error::out_of_range:
171	2x	return condition::fatal;
172	4x	default:
173	4x	return {ev, *this};
174		}
175		}
176
177		} // grammar
178		} // urls
179		} // boost
180
181		#endif
182