1 /* IELR main implementation. 2 3 Copyright (C) 2009-2012 Free Software Foundation, Inc. 4 5 This file is part of Bison, the GNU Compiler Compiler. 6 7 This program is free software: you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation, either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef IELR_H_ 21 # define IELR_H_ 22 23 #include <bitset.h> 24 25 #include "state.h" 26 27 /** 28 * \pre 29 * - \c ::states is of size \c ::nstates and defines an LR(0) parser 30 * for the users's grammar. 31 * - \c ::ntokens is the number of tokens in the grammar. 32 * \post 33 * - \c ::states is of size \c ::nstates (which might be greater than 34 * <tt>::nstates \@pre</tt>) and defines the type of parser specified by 35 * the value of the \c \%define variable \c lr.type. Its value can be: 36 * - \c "lalr". 37 * - \c "ielr". 38 * - \c "canonical-lr". 39 */ 40 void ielr (void); 41 42 bool ielr_item_has_lookahead (state *s, symbol_number lhs, size_t item, 43 symbol_number lookahead, state ***predecessors, 44 bitset **item_lookahead_sets); 45 46 #endif /* !IELR_H_ */ 47