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construct/include/ircd/grammar.h

44 lines
1.3 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 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. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_GRAMMAR_H
// This header forward declares certain boost::spirit symbols in the ircd.h
// standard include group because we do not include boost headers. This allows
// our headers to make extern references between compilation units without
// separate/internal headers. For example, one can create different grammars
// in separate compilation units and share individual rules between them,
// avoiding any DRY.
namespace boost::spirit
{
struct unused_type;
}
namespace boost::spirit::qi
{
template<class it,
class T1,
class T2,
class T3,
class T4>
struct [[gnu::visibility("default")]] rule;
}
namespace boost::spirit::karma
{
template<class it,
class T1,
class T2,
class T3,
class T4>
struct [[gnu::visibility("default")]] rule;
}