include/boost/url/grammar/impl/dec_octet_rule.hpp
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| Line | TLA | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // Copyright (c) 2023 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_DEC_OCTET_RULE_HPP | ||
| 12 | #define BOOST_URL_GRAMMAR_IMPL_DEC_OCTET_RULE_HPP | ||
| 13 | |||
| 14 | #include <boost/url/detail/config.hpp> | ||
| 15 | #include <boost/url/grammar/charset.hpp> | ||
| 16 | #include <boost/url/grammar/digit_chars.hpp> | ||
| 17 | #include <boost/url/grammar/error.hpp> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace urls { | ||
| 21 | namespace grammar { | ||
| 22 | namespace implementation_defined { | ||
| 23 | |||
| 24 | BOOST_URL_CXX20_CONSTEXPR_OR_INLINE | ||
| 25 | auto | ||
| 26 | 2478 | dec_octet_rule_t:: | |
| 27 | parse( | ||
| 28 | char const*& it, | ||
| 29 | char const* const end | ||
| 30 | ) const noexcept -> | ||
| 31 | system::result<value_type> | ||
| 32 | { | ||
| 33 | 2478 | if(it == end) | |
| 34 | { | ||
| 35 | // end | ||
| 36 | 14 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 37 | error::mismatch); | ||
| 38 | } | ||
| 39 | 2464 | if(! digit_chars(*it)) | |
| 40 | { | ||
| 41 | // expected DIGIT | ||
| 42 | 1818 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 43 | error::mismatch); | ||
| 44 | } | ||
| 45 | 646 | unsigned v = *it - '0'; | |
| 46 | 646 | ++it; | |
| 47 | 1223 | if( it == end || | |
| 48 | 577 | ! digit_chars(*it)) | |
| 49 | { | ||
| 50 | 433 | return static_cast< | |
| 51 | 433 | value_type>(v); | |
| 52 | } | ||
| 53 | 213 | if(v == 0) | |
| 54 | { | ||
| 55 | // leading '0' | ||
| 56 | 11 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 57 | error::invalid); | ||
| 58 | } | ||
| 59 | 202 | v = (10 * v) + *it - '0'; | |
| 60 | 202 | ++it; | |
| 61 | 400 | if( it == end || | |
| 62 | 198 | ! digit_chars(*it)) | |
| 63 | { | ||
| 64 | 23 | return static_cast< | |
| 65 | 23 | value_type>(v); | |
| 66 | } | ||
| 67 | 179 | if(v > 25) | |
| 68 | { | ||
| 69 | // integer overflow | ||
| 70 | 13 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 71 | error::invalid); | ||
| 72 | } | ||
| 73 | 166 | v = (10 * v) + *it - '0'; | |
| 74 | 166 | if(v > 255) | |
| 75 | { | ||
| 76 | // integer overflow | ||
| 77 | 17 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 78 | error::invalid); | ||
| 79 | } | ||
| 80 | 149 | ++it; | |
| 81 | 286 | if( it != end && | |
| 82 | 137 | digit_chars(*it)) | |
| 83 | { | ||
| 84 | // integer overflow | ||
| 85 | 7 | BOOST_URL_CONSTEXPR_RETURN_EC( | |
| 86 | error::invalid); | ||
| 87 | } | ||
| 88 | 142 | return static_cast< | |
| 89 | 142 | value_type>(v); | |
| 90 | } | ||
| 91 | |||
| 92 | } // implementation_defined | ||
| 93 | } // grammar | ||
| 94 | } // urls | ||
| 95 | } // boost | ||
| 96 | |||
| 97 | #endif | ||
| 98 |