3 # Common code for C-like languages (C, C++, Java, etc.)
5 # Copyright (C) 2012-2015, 2018-2022 Free Software Foundation, Inc.
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.
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.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <https://www.gnu.org/licenses/>.
21 # _b4_comment(TEXT, OPEN, CONTINUE, END)
22 # --------------------------------------
23 # Put TEXT in comment. Avoid trailing spaces: don't indent empty lines.
24 # Avoid adding indentation to the first line, as the indentation comes
25 # from OPEN. That's why we don't patsubst([$1], [^\(.\)], [ \1]).
26 # Turn "*/" in TEXT into "* /" so that we don't unexpectedly close
27 # the comments before its end.
29 # Prefix all the output lines with PREFIX.
30 m4_define([_b4_comment],
31 [$2[]b4_gsub(m4_expand([$1]),
39 # b4_comment(TEXT, [PREFIX])
40 # --------------------------
41 # Put TEXT in comment. Prefix all the output lines with PREFIX.
42 m4_define([b4_comment],
43 [_b4_comment([$1], [$2/* ], [$2 ], [ */])])
48 # _b4_dollar_dollar(VALUE, SYMBOL-NUM, FIELD, DEFAULT-FIELD)
49 # ----------------------------------------------------------
50 # If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD",
51 # otherwise just VALUE. Be sure to pass "(VALUE)" if VALUE is a
53 m4_define([_b4_dollar_dollar],
54 [b4_symbol_value([$1],
59 # b4_dollar_pushdef(VALUE-POINTER, SYMBOL-NUM, [TYPE_TAG], LOCATION)
61 # ------------------------------------------------------------------
62 # Define b4_dollar_dollar for VALUE-POINTER and DEFAULT-FIELD,
63 # and b4_at_dollar for LOCATION.
64 m4_define([b4_dollar_pushdef],
65 [m4_pushdef([b4_dollar_dollar],
66 [_b4_dollar_dollar([$1], [$2], m4_dquote($][1), [$3])])dnl
67 m4_pushdef([b4_at_dollar], [$4])dnl
69 m4_define([b4_dollar_popdef],
70 [m4_popdef([b4_at_dollar])dnl
71 m4_popdef([b4_dollar_dollar])dnl