mirror of
https://github.com/matrix-construct/construct
synced 2024-11-29 10:12:39 +01:00
157 lines
3.6 KiB
C++
157 lines
3.6 KiB
C++
/**
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_RFC1459_GEN_H
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#include <boost/spirit/include/karma.hpp>
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#include "rfc1459_parse.h"
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namespace ircd {
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namespace rfc1459 {
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namespace gen {
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namespace karma = boost::spirit::karma;
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using karma::lit;
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using karma::int_;
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using karma::char_;
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using karma::buffer;
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using karma::repeat;
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template<class it,
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class top>
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struct grammar
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:karma::grammar<it, top>
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{
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std::string trail_save;
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karma::rule<it> space;
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karma::rule<it> colon;
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karma::rule<it> terminator;
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karma::rule<it, rfc1459::host> hostname;
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karma::rule<it, rfc1459::user> user;
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karma::rule<it, rfc1459::nick> nick;
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karma::rule<it, rfc1459::pfx> prefix;
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karma::rule<it, rfc1459::pfx> prefix_optionals;
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karma::rule<it, string_view> trailing;
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karma::rule<it, string_view> middle;
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karma::rule<it, rfc1459::parv> params;
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karma::rule<it, rfc1459::cmd> command_numeric;
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karma::rule<it, rfc1459::cmd> command_alpha;
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karma::rule<it, rfc1459::cmd> command;
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karma::rule<it, rfc1459::line> line;
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grammar(karma::rule<it, top> &top_rule);
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};
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template<class it,
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class top>
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rfc1459::gen::grammar<it, top>::grammar(karma::rule<it, top> &top_rule)
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:grammar<it, top>::base_type
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{
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top_rule
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}
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,space // A single space character
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{
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lit(' ')
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,"space"
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}
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,colon // A single colon character
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{
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lit(':')
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,"colon"
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}
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,terminator // The message terminator
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{
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lit('\r') << lit('\n')
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,"terminator"
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}
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,hostname // A valid hostname
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{
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+char_(charset(character::HOST)) // TODO: https://tools.ietf.org/html/rfc952
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,"hostname"
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}
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,user // A valid username
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{
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+char_(charset(character::USER))
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,"user"
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}
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,nick // A valid nickname, leading letter followed by any NICK chars
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{
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buffer[char_(charset(character::ALPHA)) << *char_(charset(character::NICK))]
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,"nick"
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}
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,prefix
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{
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colon << nick << lit('!') << user << lit('@') << hostname
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,"prefix"
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}
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,prefix_optionals
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{
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colon << (nick | lit('*'))
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<< lit('!') << (user | lit('*'))
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<< lit('@') << (hostname | lit('*'))
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,"prefix_optionals"
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}
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,trailing
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{
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colon << +(~char_("\r\n"))
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,"trailing"
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}
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,middle // Spaced parameters
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{
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~char_(":\x20\r\n") << *(~char_("\x20\r\n"))
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,"middle"
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}
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,params //TODO: this doesn't work yet, don't use
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{
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*(middle % space) << buffer[-trailing]
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,"params"
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}
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,command_numeric // \d\d\d numeric
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{
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repeat(3)[char_(charset(character::DIGIT))]
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,"command_numeric"
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}
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,command_alpha
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{
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+char_(charset(character::ALPHA))
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,"command_alpha"
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}
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,command
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{
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command_alpha | command_numeric
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,"command"
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}
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,line
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{
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prefix << command << space << params << terminator
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,"line"
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}
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{
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}
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} // namespace gen
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} // namespace rfc1459
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} // namespace ircd
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