projects / bison.git / blame
| Commit | Line | Data |
|---|---|---|
| cd735a8c AD |
1 | -*- Autoconf -*- |
| 2 | ||
| 3 | # Common code for C-like languages (C, C++, Java, etc.) | |
| 4 | ||
| 5 | # Copyright (C) 2012 Free Software Foundation, Inc. | |
| 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 | # b4_dollar_dollar_(VALUE, FIELD, DEFAULT-FIELD) | |
| 21 | # ---------------------------------------------- | |
| 22 | # If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD", | |
| 23 | # otherwise just VALUE. Be sure to pass "(VALUE)" is VALUE is a | |
| 24 | # pointer. | |
| 25 | m4_define([b4_dollar_dollar_], | |
| 4323e0da AD |
26 | [b4_symbol_value([$1], |
| 27 | m4_if([$2], [[]], | |
| 28 | [[$3]], [[$2]]))]) | |
| cd735a8c AD |
29 | |
| 30 | # b4_dollar_pushdef(VALUE-POINTER, DEFAULT-FIELD, LOCATION) | |
| 31 | # b4_dollar_popdef | |
| 32 | # --------------------------------------------------------- | |
| 33 | # Define b4_dollar_dollar for VALUE and DEFAULT-FIELD, | |
| 34 | # and b4_at_dollar for LOCATION. | |
| 35 | m4_define([b4_dollar_pushdef], | |
| 36 | [m4_pushdef([b4_dollar_dollar], | |
| 37 | [b4_dollar_dollar_([$1], m4_dquote($][1), [$2])])dnl | |
| 38 | m4_pushdef([b4_at_dollar], [$3])dnl | |
| 39 | ]) | |
| 40 | m4_define([b4_dollar_popdef], | |
| 41 | [m4_popdef([b4_at_dollar])dnl | |
| 42 | m4_popdef([b4_dollar_dollar])dnl | |
| 43 | ]) |