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//
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
// Copyright (c) 2022 Alan de Freitas (alandefreitas 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_UNSIGNED_RULE_HPP
#define BOOST_URL_GRAMMAR_UNSIGNED_RULE_HPP
#include <boost/url/detail/config.hpp>
#include <boost/url/error_types.hpp>
#include <boost/url/grammar/charset.hpp>
#include <boost/core/detail/string_view.hpp>
#include <boost/static_assert.hpp>
#include <limits>
#include <type_traits>
namespace boost {
namespace urls {
namespace grammar {
/** Match an unsigned decimal
Extra leading zeroes are disallowed.
@par Value Type
@code
using value_type = Unsigned;
@endcode
@par Example
Rules are used with the function @ref parse.
@code
system::result< unsigned short > rv = parse( "32767", unsigned_rule< unsigned short >{} );
@endcode
@par BNF
@code
unsigned = "0" / ( ["1"..."9"] *DIGIT )
@endcode
@tparam Unsigned The unsigned integer type used
to store the result.
@see
@ref grammar::parse.
*/
#ifdef BOOST_URL_DOCS
template<class Unsigned>
struct unsigned_rule;
#else
template<class Unsigned>
struct unsigned_rule
{
BOOST_STATIC_ASSERT(
std::numeric_limits<
Unsigned>::is_integer &&
! std::numeric_limits<
Unsigned>::is_signed);
using value_type = Unsigned;
auto
parse(
char const*& it,
char const* end
) const noexcept ->
system::result<value_type>;
};
#endif
} // grammar
} // urls
} // boost
#include <boost/url/grammar/impl/unsigned_rule.hpp>
#endif
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