-*- Autoconf -*-
|
|
# Common code for C-like languages (C, C++, Java, etc.)
|
|
# Copyright (C) 2012 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_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_],
|
[m4_if([$2], [[]],
|
[m4_ifval([$3], [($1.$3)],
|
[$1])],
|
[($1.$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
|
])
|
