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//
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//
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// Copyright (c) 2021 Vinnie Falco (vinnie dot falco at gmail dot com)
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// Copyright (c) 2021 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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//
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// Official repository: https://github.com/boostorg/url
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// Official repository: https://github.com/boostorg/url
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//
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//
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#ifndef BOOST_URL_GRAMMAR_ALPHA_CHARS_HPP
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#ifndef BOOST_URL_GRAMMAR_ALPHA_CHARS_HPP
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#define BOOST_URL_GRAMMAR_ALPHA_CHARS_HPP
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#define BOOST_URL_GRAMMAR_ALPHA_CHARS_HPP
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#include <boost/url/detail/config.hpp>
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#include <boost/url/detail/config.hpp>
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#include <boost/url/grammar/detail/charset.hpp>
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#include <boost/url/grammar/detail/charset.hpp>
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namespace boost {
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namespace boost {
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namespace urls {
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namespace urls {
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namespace grammar {
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namespace grammar {
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namespace implementation_defined {
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namespace implementation_defined {
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struct alpha_chars_t
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struct alpha_chars_t
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{
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{
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    constexpr
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    constexpr
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    alpha_chars_t() noexcept = default;
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    alpha_chars_t() noexcept = default;
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    constexpr
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    constexpr
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    bool
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    bool
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    operator()(char c) const noexcept
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    operator()(char c) const noexcept
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    {
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    {
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        return
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        return
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            (c >= 'A' && c <= 'Z') ||
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            (c >= 'A' && c <= 'Z') ||
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            (c >= 'a' && c <= 'z');
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            (c >= 'a' && c <= 'z');
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    }
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    }
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#ifdef BOOST_URL_USE_SSE2
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#ifdef BOOST_URL_USE_SSE2
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    char const*
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    char const*
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    find_if(
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    find_if(
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        char const* first,
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        char const* first,
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        char const* last) const noexcept
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        char const* last) const noexcept
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    {
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    {
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        return detail::find_if_pred(
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        return detail::find_if_pred(
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            *this, first, last);
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            *this, first, last);
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    }
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    }
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    char const*
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    char const*
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    find_if_not(
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    find_if_not(
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        char const* first,
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        char const* first,
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        char const* last) const noexcept
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        char const* last) const noexcept
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    {
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    {
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        return detail::find_if_not_pred(
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        return detail::find_if_not_pred(
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            *this, first, last);
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            *this, first, last);
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    }
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    }
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#endif
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#endif
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};
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};
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} // implementation_defined
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} // implementation_defined
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/** The set of all letters
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/** The set of all letters
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    @par Example
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    @par Example
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    Character sets are used with rules and the
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    Character sets are used with rules and the
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    functions @ref find_if and @ref find_if_not.
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    functions @ref find_if and @ref find_if_not.
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    @code
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    @code
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    system::result< core::string_view > rv = parse( "JohnDoe", token_rule( alpha_chars ) );
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    system::result< core::string_view > rv = parse( "JohnDoe", token_rule( alpha_chars ) );
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    @endcode
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    @endcode
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    @par BNF
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    @par BNF
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    @code
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    @code
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    ALPHA       = %x41-5A / %x61-7A
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    ALPHA       = %x41-5A / %x61-7A
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                ; A-Z / a-z
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                ; A-Z / a-z
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    @endcode
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    @endcode
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    @par Specification
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    @par Specification
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    @li <a href="https://datatracker.ietf.org/doc/html/rfc5234#appendix-B.1"
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    @li <a href="https://datatracker.ietf.org/doc/html/rfc5234#appendix-B.1"
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        >B.1. Core Rules (rfc5234)</a>
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        >B.1. Core Rules (rfc5234)</a>
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    @see
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    @see
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        @ref find_if,
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        @ref find_if,
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        @ref find_if_not,
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        @ref find_if_not,
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        @ref parse,
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        @ref parse,
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        @ref token_rule.
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        @ref token_rule.
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*/
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*/
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constexpr implementation_defined::alpha_chars_t alpha_chars{};
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constexpr implementation_defined::alpha_chars_t alpha_chars{};
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} // grammar
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} // grammar
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} // urls
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} // urls
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} // boost
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} // boost
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#endif
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#endif