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/* Copyright (C) 2017-2018 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gsubr.h"
#include "keywords.h"
#include "eval.h"
#include "modules.h"
#include "ports.h"
#include "syntax.h"
#include "threads.h"
#include "variable.h"
static int
scm_is_syntax (SCM x)
{
return SCM_HAS_TYP7 (x, scm_tc7_syntax);
}
#define SCM_VALIDATE_SYNTAX(pos, scm) \
SCM_I_MAKE_VALIDATE_MSG2 (pos, scm, scm_is_syntax, "syntax object")
SCM_DEFINE (scm_syntax_p, "syntax?", 1, 0, 0,
(SCM obj),
"Return @code{#t} if the argument @var{obj} is a syntax object,\n"
"else @code{#f}.")
#define FUNC_NAME s_scm_syntax_p
{
return scm_from_bool (scm_is_syntax (obj));
}
#undef FUNC_NAME
SCM_DEFINE (scm_make_syntax, "make-syntax", 3, 0, 0,
(SCM exp, SCM wrap, SCM module),
"Make a new syntax object.")
#define FUNC_NAME s_scm_make_syntax
{
return scm_double_cell (scm_tc7_syntax, SCM_UNPACK (exp),
SCM_UNPACK (wrap), SCM_UNPACK (module));
}
#undef FUNC_NAME
SCM_DEFINE (scm_syntax_expression, "syntax-expression", 1, 0, 0,
(SCM obj),
"Return the expression contained in the syntax object @var{obj}.")
#define FUNC_NAME s_scm_syntax_expression
{
SCM_VALIDATE_SYNTAX (1, obj);
return SCM_CELL_OBJECT_1 (obj);
}
#undef FUNC_NAME
SCM_DEFINE (scm_syntax_wrap, "syntax-wrap", 1, 0, 0,
(SCM obj),
"Return the wrap contained in the syntax object @var{obj}.")
#define FUNC_NAME s_scm_syntax_wrap
{
SCM_VALIDATE_SYNTAX (1, obj);
return SCM_CELL_OBJECT_2 (obj);
}
#undef FUNC_NAME
SCM_DEFINE (scm_syntax_module, "syntax-module", 1, 0, 0,
(SCM obj),
"Return the module info contained in the syntax object @var{obj}.")
#define FUNC_NAME s_scm_syntax_module
{
SCM_VALIDATE_SYNTAX (1, obj);
return SCM_CELL_OBJECT_3 (obj);
}
#undef FUNC_NAME
static SCM print_syntax_var;
static void
init_print_syntax_var (void)
{
print_syntax_var =
scm_c_private_variable ("system syntax", "print-syntax");
}
void
scm_i_syntax_print (SCM obj, SCM port, scm_print_state *pstate)
{
static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT;
scm_i_pthread_once (&once, init_print_syntax_var);
scm_call_2 (scm_variable_ref (print_syntax_var), obj, port);
}
void
scm_init_syntax ()
{
#include "syntax.x"
}
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