modules/modtest.c

   1 /* GNU m4 -- A simple macro processor
   2    Copyright (C) 1999-2001, 2003-2004, 2006-2008, 2010, 2013 Free
   3    Software Foundation, Inc.
   4
   5    This file is part of GNU M4.
   6
   7    GNU M4 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    GNU M4 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
  21 #include <config.h>
  22
  23 /* Build using only the exported interfaces, unless NDEBUG is set, in
  24    which case use private symbols to speed things up as much as possible.  */
  25 #ifndef NDEBUG
  26 #  include <m4/m4module.h>
  27 #else
  28 #  include "m4private.h"
  29 #endif
  30
  31 extern bool export_test (const char *foo);
  32
  33 /*         function     macros  blind   side    minargs maxargs */
  34 #define builtin_functions                                       \
  35   BUILTIN (test,        false,  false,  false,  0,      0)
  36
  37 #define BUILTIN(handler, macros, blind, side, min, max) M4BUILTIN (handler)
  38   builtin_functions
  39 #undef BUILTIN
  40
  41 static const m4_builtin m4_builtin_table[] =
  42 {
  43 #define BUILTIN(handler, macros, blind, side, min, max)                 \
  44   M4BUILTIN_ENTRY (handler, #handler, macros, blind, side, min, max)
  45
  46   builtin_functions
  47 #undef BUILTIN
  48
  49   { NULL, NULL, 0, 0, 0 },
  50 };
  51
  52 static const m4_macro m4_macro_table[] =
  53 {
  54   /* name               text            min     max */
  55   { "__test__",         "`modtest'",    0,      0 },
  56   { "onearg",           "$1",           1,      1 },
  57   { "manyargs",         "$@",           0,      SIZE_MAX },
  58   { NULL,               NULL,           0,      0 },
  59 };
  60
  61
  62 \f
  63 /**
  64  * modtest()
  65  **/
  66 void
  67 include_modtest (m4 *context, m4_module *module, m4_obstack *obs)
  68 {
  69   const char *s = "Test module loaded.\n";
  70
  71   m4_install_builtins (context, module, m4_builtin_table);
  72   m4_install_macros   (context, module, m4_macro_table);
  73
  74   /* Don't depend on OBS so that the traces are the same when used
  75      directly, or via a frozen file.  */
  76   fputs (s, stderr);
  77 }
  78
  79
  80 /**
  81  * test()
  82  **/
  83 M4BUILTIN_HANDLER (test)
  84 {
  85   const char *s = "Test module called.";
  86
  87   assert (obs != 0);
  88   obstack_grow (obs, s, strlen(s));
  89 }
  90
  91
  92 /**
  93  * export_test()
  94  **/
  95 bool
  96 export_test (const char *foo)
  97 {
  98   if (foo)
  99     xfprintf (stderr, "%s\n", foo);
 100   return (bool) (foo != 0);
 101 }