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/* IELR main implementation.
Copyright (C) 2009-2015, 2018-2020 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef IELR_H_
# define IELR_H_
# include <bitset.h>
# include "state.h"
/**
* \pre
* - \c ::states is of size \c ::nstates and defines an LR(0) parser
* for the users's grammar.
* - \c ::ntokens is the number of tokens in the grammar.
* \post
* - \c ::states is of size \c ::nstates (which might be greater than
* <tt>::nstates \@pre</tt>) and defines the type of parser specified by
* the value of the \c \%define variable \c lr.type. Its value can be:
* - \c "lalr".
* - \c "ielr".
* - \c "canonical-lr".
*/
void ielr (void);
bool ielr_item_has_lookahead (state *s, symbol_number lhs, size_t item,
symbol_number lookahead, state ***predecessors,
bitset **item_lookahead_sets);
#endif /* !IELR_H_ */
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