#ifndef SCM_SYNTAX_H
#define SCM_SYNTAX_H

/* Copyright 2017-2018,2021,2025
    Free Software Foundation, Inc.

   This file is part of Guile.

   Guile 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.

   Guile 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 Guile.  If not, see
   <https://www.gnu.org/licenses/>.  */

#include "libguile/scm.h"

struct scm_syntax
{
  scm_t_bits tag;
  SCM expr;
  SCM wrap;
  SCM module;
  SCM source;
};

static int
scm_is_syntax (SCM x)
{
  return SCM_HAS_TYP7 (x, scm_tc7_syntax);
}

static inline struct scm_syntax *
scm_to_syntax (SCM x)
{
  if (!scm_is_syntax (x))
    abort ();
  return (struct scm_syntax *) SCM_UNPACK_POINTER (x);
}

static inline SCM
scm_from_syntax (struct scm_syntax *stx)
{
  return SCM_PACK_POINTER (stx);
}

SCM_INTERNAL SCM scm_syntax_p (SCM obj);
SCM_INTERNAL SCM scm_make_syntax (SCM exp, SCM wrap, SCM module, SCM source);
SCM_INTERNAL SCM scm_syntax_expression (SCM obj);
SCM_INTERNAL SCM scm_syntax_wrap (SCM obj);
SCM_INTERNAL SCM scm_syntax_module (SCM obj);
SCM_INTERNAL SCM scm_syntax_source (SCM obj);

SCM_INTERNAL void scm_i_syntax_print (SCM obj, SCM port,
                                      scm_print_state *pstate);
SCM_INTERNAL void scm_init_syntax (void);

#endif  /* SCM_SYNTAX_H */