include/boost/url/grammar/literal_rule.hpp
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include/boost/url/grammar/literal_rule.hpp
| Line | Branch | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot 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_LITERAL_RULE_HPP | ||
| 12 | #define BOOST_URL_GRAMMAR_LITERAL_RULE_HPP | ||
| 13 | |||
| 14 | #include <boost/url/detail/config.hpp> | ||
| 15 | #include <boost/url/error_types.hpp> | ||
| 16 | #include <boost/core/detail/string_view.hpp> | ||
| 17 | #include <cstdlib> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace urls { | ||
| 21 | namespace grammar { | ||
| 22 | |||
| 23 | /** Match a string literal exactly | ||
| 24 | |||
| 25 | If there is no more input, or if the | ||
| 26 | end of the input is reached, and a prefix | ||
| 27 | of the literal matches exactly, the error | ||
| 28 | returned is @ref error::need_more. | ||
| 29 | |||
| 30 | @par Value Type | ||
| 31 | @code | ||
| 32 | using value_type = core::string_view; | ||
| 33 | @endcode | ||
| 34 | |||
| 35 | @par Example | ||
| 36 | Rules are used with the function @ref parse. | ||
| 37 | @code | ||
| 38 | system::result< core::string_view > rv = parse( "HTTP", literal_rule( "HTTP" ) ); | ||
| 39 | @endcode | ||
| 40 | |||
| 41 | @see | ||
| 42 | @ref delim_rule, | ||
| 43 | @ref parse. | ||
| 44 | */ | ||
| 45 | class literal_rule | ||
| 46 | { | ||
| 47 | char const* s_ = nullptr; | ||
| 48 | std::size_t n_ = 0; | ||
| 49 | |||
| 50 | constexpr | ||
| 51 | static | ||
| 52 | std::size_t | ||
| 53 | 48 | len(char const* s) noexcept | |
| 54 | { | ||
| 55 | 48 | return *s | |
| 56 |
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48 | ? 1 + len(s + 1) |
| 57 | 48 | : 0; | |
| 58 | } | ||
| 59 | |||
| 60 | public: | ||
| 61 | using value_type = core::string_view; | ||
| 62 | |||
| 63 | constexpr | ||
| 64 | explicit | ||
| 65 | 10 | literal_rule( | |
| 66 | char const* s) noexcept | ||
| 67 | 10 | : s_(s) | |
| 68 | 10 | , n_(len(s)) | |
| 69 | { | ||
| 70 | 10 | } | |
| 71 | |||
| 72 | BOOST_URL_CXX20_CONSTEXPR | ||
| 73 | system::result<value_type> | ||
| 74 | parse( | ||
| 75 | char const*& it, | ||
| 76 | char const* end) const noexcept; | ||
| 77 | }; | ||
| 78 | |||
| 79 | } // grammar | ||
| 80 | } // urls | ||
| 81 | } // boost | ||
| 82 | |||
| 83 | #include <boost/url/grammar/impl/literal_rule.hpp> | ||
| 84 | |||
| 85 | #endif | ||
| 86 |