0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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//
// Copyright (c) 2021 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/url
//
#ifndef BOOST_URL_GRAMMAR_VCHARS_HPP
#define BOOST_URL_GRAMMAR_VCHARS_HPP
#include <boost/url/detail/config.hpp>
#include <boost/url/grammar/detail/charset.hpp>
namespace boost {
namespace urls {
namespace grammar {
/** The set of visible characters
@par Example
Character sets are used with rules and the
functions @ref find_if and @ref find_if_not.
@code
result< string_view > rv = parse( "JohnDoe", token_rule( vchars ) );
@endcode
@par BNF
@code
VCHAR = 0x21-0x7E
; visible (printing) characters
@endcode
@par Specification
@li <a href="https://datatracker.ietf.org/doc/html/rfc5234#appendix-B.1"
>B.1. Core Rules (rfc5234)</a>
@see
@ref find_if,
@ref find_if_not,
@ref parse,
@ref token_rule.
*/
#ifdef BOOST_URL_DOCS
constexpr __implementation_defined__ vchars;
#else
struct vchars_t
{
constexpr
bool
operator()(char c) const noexcept
{
return c >= 0x21 && c <= 0x7e;
}
#ifdef BOOST_URL_USE_SSE2
char const*
find_if(
char const* first,
char const* last) const noexcept
{
return detail::find_if_pred(
*this, first, last);
}
char const*
find_if_not(
char const* first,
char const* last) const noexcept
{
return detail::find_if_not_pred(
*this, first, last);
}
#endif
};
constexpr vchars_t vchars{};
#endif
} // grammar
} // urls
} // boost
#endif
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