data/c-like.m4

   1                                                             -*- Autoconf -*-
   2
   3 # Common code for C-like languages (C, C++, Java, etc.)
   4
   5 # Copyright (C) 2012-2015 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.
  27 m4_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.
  36 m4_define([b4_comment],
  37 [b4_comment_([$1], [$2/* ], [$2   ], [  */])])
  38
  39
  40
  41
  42 # b4_dollar_dollar_(VALUE, 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)" is VALUE is a
  46 # pointer.
  47 m4_define([b4_dollar_dollar_],
  48 [b4_symbol_value([$1],
  49                  m4_if([$2], [[]],
  50                        [[$3]], [[$2]]))])
  51
  52 # b4_dollar_pushdef(VALUE-POINTER, DEFAULT-FIELD, LOCATION)
  53 # b4_dollar_popdef
  54 # ---------------------------------------------------------
  55 # Define b4_dollar_dollar for VALUE and DEFAULT-FIELD,
  56 # and b4_at_dollar for LOCATION.
  57 m4_define([b4_dollar_pushdef],
  58 [m4_pushdef([b4_dollar_dollar],
  59             [b4_dollar_dollar_([$1], m4_dquote($][1), [$2])])dnl
  60 m4_pushdef([b4_at_dollar], [$3])dnl
  61 ])
  62 m4_define([b4_dollar_popdef],
  63 [m4_popdef([b4_at_dollar])dnl
  64 m4_popdef([b4_dollar_dollar])dnl
  65 ])