| /* Three-level bitmap lookup. |
| Copyright (C) 2000-2002, 2005-2007, 2009-2020 Free Software Foundation, Inc. |
| Written by Bruno Haible <bruno@clisp.org>, 2000-2002. |
| |
| This program is free software: you can redistribute it and/or modify it |
| under the terms of the GNU Lesser 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| static inline int identsyntax_lookup (ucs4_t uc); |
| |
| static inline int |
| identsyntax_lookup (ucs4_t uc) |
| { |
| unsigned int index1 = uc >> identsyntax_header_0; |
| if (index1 < identsyntax_header_1) |
| { |
| int lookup1 = TABLE.level1[index1]; |
| if (lookup1 >= 0) |
| { |
| unsigned int index2 = (uc >> identsyntax_header_2) & identsyntax_header_3; |
| int lookup2 = TABLE.level2[lookup1 + index2]; |
| if (lookup2 >= 0) |
| { |
| unsigned int index3 = (uc & identsyntax_header_4) + lookup2; |
| /* level3 contains 2-bit values. */ |
| unsigned int lookup3 = TABLE.level3[index3 >> 3]; |
| |
| return (lookup3 >> (2 * (index3 & 7))) & 3; |
| } |
| } |
| } |
| return UC_IDENTIFIER_INVALID; |
| } |
