1 -*- Autoconf -*- 2 3# Common code for C-like languages (C, C++, Java, etc.) 4 5# Copyright (C) 2012-2015, 2018-2019 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_comment(TEXT, OPEN, CONTINUE, END) 21# -------------------------------------- 22# Put TEXT in comment. Avoid trailing spaces: don't indent empty lines. 23# Avoid adding indentation to the first line, as the indentation comes 24# from OPEN. That's why we don't patsubst([$1], [^\(.\)], [ \1]). 25# 26# Prefix all the output lines with PREFIX. 27m4_define([_b4_comment], 28[$2[]m4_bpatsubst(m4_expand([[$1]]), [ 29\(.\)], [ 30$3\1])$4]) 31 32 33# b4_comment(TEXT, [PREFIX]) 34# -------------------------- 35# Put TEXT in comment. Prefix all the output lines with PREFIX. 36m4_define([b4_comment], 37[_b4_comment([$1], [$2/* ], [$2 ], [ */])]) 38 39 40 41 42# _b4_dollar_dollar(VALUE, SYMBOL-NUM, FIELD, DEFAULT-FIELD) 43# ---------------------------------------------------------- 44# If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD", 45# otherwise just VALUE. Be sure to pass "(VALUE)" if VALUE is a 46# pointer. 47m4_define([_b4_dollar_dollar], 48[b4_symbol_value([$1], 49 [$2], 50 m4_if([$3], [[]], 51 [[$4]], [[$3]]))]) 52 53# b4_dollar_pushdef(VALUE-POINTER, SYMBOL-NUM, [TYPE_TAG], LOCATION) 54# b4_dollar_popdef 55# ------------------------------------------------------------------ 56# Define b4_dollar_dollar for VALUE-POINTER and DEFAULT-FIELD, 57# and b4_at_dollar for LOCATION. 58m4_define([b4_dollar_pushdef], 59[m4_pushdef([b4_dollar_dollar], 60 [_b4_dollar_dollar([$1], [$2], m4_dquote($][1), [$3])])dnl 61m4_pushdef([b4_at_dollar], [$4])dnl 62]) 63m4_define([b4_dollar_popdef], 64[m4_popdef([b4_at_dollar])dnl 65m4_popdef([b4_dollar_dollar])dnl 66]) 67