tests/import.c

   1 /* GNU m4 -- A simple macro processor
   2    Copyright (C) 2003, 2006-2008, 2010, 2013-2014, 2017 Free Software
   3    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 /*         function     macros  blind   side    minargs maxargs */
  32 #define builtin_functions                                       \
  33   BUILTIN (import,      false,  false,  false,  0,      1)      \
  34   BUILTIN (symbol_fail, false,  false,  false,  0,      1)      \
  35   BUILTIN (module_fail, false,  false,  false,  0,      1)      \
  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
  53 void
  54 include_import (m4 *context, m4_module *module, m4_obstack *obs)
  55 {
  56   m4_install_builtins (context, module, m4_builtin_table);
  57 }
  58
  59
  60 \f
  61 typedef bool export_test_func (const char *);
  62 typedef bool no_such_func (const char *);
  63
  64 /**
  65  * import()
  66  **/
  67 M4BUILTIN_HANDLER (import)
  68 {
  69   M4_MODULE_IMPORT (modtest, export_test);
  70
  71   const char *s = "`import'::`import' called.";
  72
  73   assert (obs != 0);
  74   obstack_grow (obs, s, strlen(s));
  75
  76   if (export_test && export_test (M4ARG (1)))
  77     fputs ("TRUE\n", stderr);
  78 }
  79
  80 /**
  81  * symbol_fail()
  82  **/
  83 M4BUILTIN_HANDLER (symbol_fail)
  84 {
  85   M4_MODULE_IMPORT (modtest, no_such);
  86
  87   const char *s = "`import'::`symbol_fail' called.";
  88
  89   assert (obs != 0);
  90   obstack_grow (obs, s, strlen(s));
  91
  92   if (no_such && no_such (M4ARG (1)))
  93     fputs ("TRUE\n", stderr);
  94 }
  95
  96 /**
  97  * module_fail()
  98  **/
  99 M4BUILTIN_HANDLER (module_fail)
 100 {
 101   M4_MODULE_IMPORT (no_such, no_such);
 102
 103   const char *s = "`import'::`module_fail' called.";
 104
 105   assert (obs != 0);
 106   obstack_grow (obs, s, strlen(s));
 107
 108   if (no_such && no_such (M4ARG (1)))
 109     fputs ("TRUE\n", stderr);
 110 }