. /include/boost/url /grammar /impl /not_empty_rule.hpp
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1   // 1   //
2   // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) 2   // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
3   // Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com) 3   // Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
4   // 4   //
5   // Distributed under the Boost Software License, Version 1.0. (See accompanying 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) 6   // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7   // 7   //
8   // Official repository: https://github.com/boostorg/url 8   // Official repository: https://github.com/boostorg/url
9   // 9   //
10   10  
11   #ifndef BOOST_URL_GRAMMAR_IMPL_NOT_EMPTY_RULE_HPP 11   #ifndef BOOST_URL_GRAMMAR_IMPL_NOT_EMPTY_RULE_HPP
12   #define BOOST_URL_GRAMMAR_IMPL_NOT_EMPTY_RULE_HPP 12   #define BOOST_URL_GRAMMAR_IMPL_NOT_EMPTY_RULE_HPP
13   13  
14   #include <boost/url/grammar/error.hpp> 14   #include <boost/url/grammar/error.hpp>
15   #include <boost/url/grammar/parse.hpp> 15   #include <boost/url/grammar/parse.hpp>
16   16  
17   namespace boost { 17   namespace boost {
18   namespace urls { 18   namespace urls {
19   namespace grammar { 19   namespace grammar {
20   20  
21   namespace implementation_defined { 21   namespace implementation_defined {
22   template<class R> 22   template<class R>
23   BOOST_URL_CXX20_CONSTEXPR 23   BOOST_URL_CXX20_CONSTEXPR
24   auto 24   auto
HITCBC 25   8 not_empty_rule_t<R>:: 25   8 not_empty_rule_t<R>::
26   parse( 26   parse(
27   char const*& it, 27   char const*& it,
28   char const* end) const -> 28   char const* end) const ->
29   system::result<value_type> 29   system::result<value_type>
30   { 30   {
HITCBC 31   8 if(it == end) 31   8 if(it == end)
32   { 32   {
33   // empty 33   // empty
HITCBC 34   1 BOOST_URL_CONSTEXPR_RETURN_EC( 34   1 BOOST_URL_CONSTEXPR_RETURN_EC(
35   error::mismatch); 35   error::mismatch);
36   } 36   }
HITCBC 37   7 auto const it0 = it; 37   7 auto const it0 = it;
HITCBC 38   7 auto rv = r_.parse(it, end); 38   7 auto rv = r_.parse(it, end);
HITCBC 39   7 if( !rv ) 39   7 if( !rv )
40   { 40   {
41   // error 41   // error
HITCBC 42   3 return rv; 42   3 return rv;
43   } 43   }
HITCBC 44   4 if(it == it0) 44   4 if(it == it0)
45   { 45   {
46   // empty 46   // empty
HITCBC 47   1 BOOST_URL_CONSTEXPR_RETURN_EC( 47   1 BOOST_URL_CONSTEXPR_RETURN_EC(
48   error::mismatch); 48   error::mismatch);
49   } 49   }
50   // value 50   // value
HITCBC 51   3 return rv; 51   3 return rv;
52   } 52   }
53   } 53   }
54   54  
55   } // grammar 55   } // grammar
56   } // urls 56   } // urls
57   } // boost 57   } // boost
58   58  
59   #endif 59   #endif