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construct/ircd/parse.cc

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/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
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#include <boost/spirit/include/qi.hpp>
#include <boost/fusion/include/std_pair.hpp>
namespace ircd {
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// Registry of grammars. Grammars are usualy static data or modules.
IRCD_INIT_PRIORITY(STD_CONTAINER)
decltype(parse::grammar::grammars)
parse::grammar::grammars
{
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};
} // namespace ircd
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ircd::parse::grammar::grammar(const char *const &name)
:name{name}
,grammars_it{[this, &name]
{
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const auto iit(grammars.emplace(name, this));
if(!iit.second)
throw grammar_error("Parsing grammar named \"%s\" already exists.", name);
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return iit.first;
}()}
{
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}
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ircd::parse::grammar::~grammar()
noexcept
{
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grammars.erase(grammars_it);
}