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 /* Rename exported symbols for dlpreload()ing.  */
  32 #define m4_builtin_table        modtest_LTX_m4_builtin_table
  33 #define m4_macro_table          modtest_LTX_m4_macro_table
  34
  35 #define export_test             modtest_LTX_export_test
  36
  37 extern bool export_test (const char *foo);
  38
  39 /*         function     macros  blind   side    minargs maxargs */
  40 #define builtin_functions                                       \
  41   BUILTIN (test,        false,  false,  false,  0,      0)
  42
  43 #define BUILTIN(handler, macros, blind, side, min, max) M4BUILTIN (handler)
  44   builtin_functions
  45 #undef BUILTIN
  46
  47 const m4_builtin m4_builtin_table[] =
  48 {
  49 #define BUILTIN(handler, macros, blind, side, min, max)                 \
  50   M4BUILTIN_ENTRY (handler, #handler, macros, blind, side, min, max)
  51
  52   builtin_functions
  53 #undef BUILTIN
  54
  55   { NULL, NULL, 0, 0, 0 },
  56 };
  57
  58 const m4_macro m4_macro_table[] =
  59 {
  60   /* name               text            min     max */
  61   { "__test__",         "`modtest'",    0,      0 },
  62   { "onearg",           "$1",           1,      1 },
  63   { "manyargs",         "$@",           0,      SIZE_MAX },
  64   { NULL,               NULL,           0,      0 },
  65 };
  66
  67
  68 \f
  69 /**
  70  * modtest()
  71  **/
  72 M4INIT_HANDLER (modtest)
  73 {
  74   const char *s = "Test module loaded.\n";
  75
  76   /* Don't depend on OBS so that the traces are the same when used
  77      directly, or via a frozen file.  */
  78   fputs (s, stderr);
  79 }
  80
  81
  82 /**
  83  * test()
  84  **/
  85 M4BUILTIN_HANDLER (test)
  86 {
  87   const char *s = "Test module called.";
  88
  89   assert (obs != 0);
  90   obstack_grow (obs, s, strlen(s));
  91 }
  92
  93
  94 /**
  95  * export_test()
  96  **/
  97 bool
  98 export_test (const char *foo)
  99 {
 100   if (foo)
 101     xfprintf (stderr, "%s\n", foo);
 102   return (bool) (foo != 0);
 103 }