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bison
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c-like.m4
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-*- Autoconf -*- # Common code for C-like languages (C, C++, Java, etc.) # Copyright (C) 2012-2015 Free Software Foundation, Inc. # 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/>. # b4_comment_(TEXT, OPEN, CONTINUE, END) # -------------------------------------- # Put TEXT in comment. Avoid trailing spaces: don't indent empty lines. # Avoid adding indentation to the first line, as the indentation comes # from OPEN. That's why we don't patsubst([$1], [^\(.\)], [ \1]). # # Prefix all the output lines with PREFIX. m4_define([b4_comment_], [$2[]m4_bpatsubst(m4_expand([[$1]]), [ \(.\)], [ $3\1])$4]) # b4_comment(TEXT, [PREFIX]) # -------------------------- # Put TEXT in comment. Prefix all the output lines with PREFIX. m4_define([b4_comment], [b4_comment_([$1], [$2/* ], [$2 ], [ */])]) # b4_dollar_dollar_(VALUE, FIELD, DEFAULT-FIELD) # ---------------------------------------------- # If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD", # otherwise just VALUE. Be sure to pass "(VALUE)" is VALUE is a # pointer. m4_define([b4_dollar_dollar_], [b4_symbol_value([$1], m4_if([$2], [[]], [[$3]], [[$2]]))]) # b4_dollar_pushdef(VALUE-POINTER, DEFAULT-FIELD, LOCATION) # b4_dollar_popdef # --------------------------------------------------------- # Define b4_dollar_dollar for VALUE and DEFAULT-FIELD, # and b4_at_dollar for LOCATION. m4_define([b4_dollar_pushdef], [m4_pushdef([b4_dollar_dollar], [b4_dollar_dollar_([$1], m4_dquote($][1), [$2])])dnl m4_pushdef([b4_at_dollar], [$3])dnl ]) m4_define([b4_dollar_popdef], [m4_popdef([b4_at_dollar])dnl m4_popdef([b4_dollar_dollar])dnl ])