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/* GNU m4 -- A simple macro processor
Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1999, 2000, 2005,
2006, 2007 Free Software Foundation, Inc.
This file is part of GNU M4.
GNU M4 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.
GNU M4 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/>.
*/
/* Code for all builtin macros, initialisation of symbol table, and
expansion of user defined macros. */
#include <config.h>
#include "m4private.h"
/* Find the builtin which has NAME. If MODULE is not NULL, then
search only in MODULE's builtin table. The result is a malloc'd
symbol value, suitable for use in the symbol table or for an
argument to m4_push_builtin. */
m4_symbol_value *
m4_builtin_find_by_name (m4_module *module, const char *name)
{
m4_module *cur = module ? module : m4__module_next (NULL);
do
{
const m4_builtin *builtin =
(m4_builtin *) lt_dlsym (cur->handle, BUILTIN_SYMBOL);
if (builtin)
{
for (; builtin->name != NULL; builtin++)
if (!strcmp (builtin->name, name))
{
m4_symbol_value *token = xzalloc (sizeof *token);
m4_set_symbol_value_builtin (token, builtin);
VALUE_MODULE (token) = cur;
VALUE_FLAGS (token) = builtin->flags;
VALUE_MIN_ARGS (token) = builtin->min_args;
VALUE_MAX_ARGS (token) = builtin->max_args;
return token;
}
}
}
while (!module && (cur = m4__module_next (cur)));
return NULL;
}
/* Find the builtin which has FUNC. If MODULE argument is supplied
then search only in MODULE's builtin table. */
const m4_builtin *
m4_builtin_find_by_func (m4_module *module, m4_builtin_func *func)
{
m4_module *cur = module ? module : m4__module_next (NULL);
do
{
const m4_builtin *builtin =
(const m4_builtin *) lt_dlsym (cur->handle, BUILTIN_SYMBOL);
if (builtin)
{
for (; builtin->name != NULL; builtin++)
if (builtin->func == func)
return builtin;
}
}
while (!module && (cur = m4__module_next (cur)));
return 0;
}
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